void drawColourPoly(const carve::geom3d::Vector &normal, std::vector<std::pair<carve::geom3d::Vector, cRGBA> > &v) {
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
GLUtesselator *tess = gluNewTess();
gluTessCallback(tess, GLU_TESS_BEGIN_DATA, (GLUTessCallback)_normalBegin);
gluTessCallback(tess, GLU_TESS_VERTEX_DATA, (GLUTessCallback)_colourVertex);
gluTessCallback(tess, GLU_TESS_END_DATA, (GLUTessCallback)_normalEnd);
gluTessBeginPolygon(tess, (void *)(GLdouble *)normal.v);
gluTessBeginContour(tess);
for (size_t i = 0, l = v.size(); i != l; ++i) {
gluTessVertex(tess, (GLdouble *)v[i].first.v, (GLvoid *)&v[i]);
}
gluTessEndContour(tess);
gluTessEndPolygon(tess);
gluDeleteTess(tess);
}
void glu_tessbeginpolygon( int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[] ) {
MOGLDEFMYTESS;
if (NULL == gluTessBeginPolygon) mogl_glunsupported("gluTessBeginPolygon");
// Setup all tesselator callbacks for this polygon:
MOGLSETTESSCALLBACK(GLU_TESS_BEGIN);
MOGLSETTESSCALLBACK(GLU_TESS_EDGE_FLAG);
MOGLSETTESSCALLBACK(GLU_TESS_VERTEX);
MOGLSETTESSCALLBACK(GLU_TESS_END);
MOGLSETTESSCALLBACK(GLU_TESS_COMBINE);
MOGLSETTESSCALLBACK(GLU_TESS_ERROR);
// Store user-provided polygon data pointer internally:
mytess->polygondata = mxGetScalar(prhs[1]);
// Pass pointer to our own struct as polygondata to the real tesselator:
gluTessBeginPolygon((GLUtesselator*) mytess->glutesselator, (GLvoid*) mytess);
}
void GLShapeRenderer::renderPolygon(LKSurface& Surface, const XShape& shape, Brush& brush, const ScreenProjection& _Proj) {
/*
OpenGL cannot draw complex polygons so we need to use a Tessallator to draw the polygon using a GL_TRIANGLE_FAN
*/
#ifdef USE_GLSL
OpenGL::solid_shader->Use();
#endif
brush.Bind();
std::unique_ptr<const GLBlend> blend;
if(!brush.IsOpaque()) {
blend = std::make_unique<const GLBlend>(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
curr_LabelPos = clipRect.GetBottomRight();
const shapeObj& shp = shape.shape;
gluTessBeginPolygon(tess, this );
for (int j = 0; j < shp.numlines; j++) {
gluTessBeginContour(tess);
for (int i = 0; i < shp.line[j].numpoints; i++) {
const RasterPoint pt = _Proj.LonLat2Screen(shp.line[j].point[i]);
if (!noLabel && (pt.x<=curr_LabelPos.x)) {
curr_LabelPos = pt;
}
vertex_t& vertex = *(pointers.insert(pointers.end(), vertex_t({{(GLdouble)pt.x, (GLdouble)pt.y, 0.}})));
gluTessVertex(tess, vertex.data(), vertex.data());
}
gluTessEndContour(tess);
}
gluTessEndPolygon(tess);
if(shape.HasLabel() && clipRect.IsInside(curr_LabelPos)) {
shape.renderSpecial(Surface, curr_LabelPos.x, curr_LabelPos.y, clipRect);
}
pointers.clear();
}
void Opengl2dPainter::drawPolygon(const POINT2F* pPoints, INT count, bool bFill)
{
/// opengl tesselation
if (bFill)
gluTessProperty(_pPimpl->pTesslation, GLU_TESS_BOUNDARY_ONLY, false);
else
gluTessProperty(_pPimpl->pTesslation, GLU_TESS_BOUNDARY_ONLY, true);
VERTEX_EDGE v;
std::vector<VERTEX_EDGE> vertices;
vertices.reserve(count+1);
gluTessBeginPolygon(_pPimpl->pTesslation, NULL);
gluTessBeginContour(_pPimpl->pTesslation);
gluNextContour(_pPimpl->pTesslation, GLU_EXTERIOR);
for (int i=0; i< count; ++i)
{
v.x = pPoints[i].x;
v.y = pPoints[i].y;
v.z = 0;
vertices.push_back(v);
gluTessVertex(_pPimpl->pTesslation, (double*)&vertices[i], (void*) &vertices[i]);
}
v.x = pPoints[0].x;
v.y = pPoints[0].y;
v.z = 0;
vertices.push_back(v);
gluTessVertex(_pPimpl->pTesslation, (double*)&vertices[count],(void*) &vertices[count]);
gluTessEndContour(_pPimpl->pTesslation);
gluTessEndPolygon(_pPimpl->pTesslation);
}
static void GotoState( GLUtesselator *tess, enum TessState newState )
{
while( tess->state != newState ) {
/* We change the current state one level at a time, to get to
* the desired state.
*/
if( tess->state < newState ) {
switch( tess->state ) {
case T_DORMANT:
CALL_ERROR_OR_ERROR_DATA( GLU_TESS_MISSING_BEGIN_POLYGON );
gluTessBeginPolygon( tess, NULL );
break;
case T_IN_POLYGON:
CALL_ERROR_OR_ERROR_DATA( GLU_TESS_MISSING_BEGIN_CONTOUR );
gluTessBeginContour( tess );
break;
default:
assert(0);
break;
}
} else {
switch( tess->state ) {
case T_IN_CONTOUR:
CALL_ERROR_OR_ERROR_DATA( GLU_TESS_MISSING_END_CONTOUR );
gluTessEndContour( tess );
break;
case T_IN_POLYGON:
CALL_ERROR_OR_ERROR_DATA( GLU_TESS_MISSING_END_POLYGON );
/* gluTessEndPolygon( tess ) is too much work! */
MakeDormant( tess );
break;
default:
assert(0);
break;
}
}
}
}
void tessellate
(double **verts,
int *nverts,
int **tris,
int *ntris,
const double **contoursbegin,
const double **contoursend)
{
const double *contourbegin, *contourend;
struct Vertex_s *current_vertex;
GLUtesselator *tess;
struct TessContext_s *ctx;
tess = gluNewTess();
ctx = new_tess_context();
gluTessProperty(tess, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_NONZERO);
gluTessCallback(tess, GLU_TESS_VERTEX_DATA, (GLvoid (*) ()) &vertex);
gluTessCallback(tess, GLU_TESS_BEGIN_DATA, (GLvoid (*) ()) &begin);
gluTessCallback(tess, GLU_TESS_COMBINE_DATA, (GLvoid (*) ()) &combine);
gluTessBeginPolygon(tess, ctx);
do {
contourbegin = *contoursbegin++;
contourend = *contoursbegin;
gluTessBeginContour(tess);
while (contourbegin != contourend) {
current_vertex = new_vertex(ctx, contourbegin[0], contourbegin[1]);
contourbegin += 2;
gluTessVertex(tess, current_vertex->pt, current_vertex);
}
gluTessEndContour(tess);
} while (contoursbegin != (contoursend - 1));
gluTessEndPolygon(tess);
write_output(ctx, verts, tris, nverts, ntris);
destroy_tess_context(ctx);
gluDeleteTess(tess);
}
//only draws the GL polygon face without normals and colors
//dir implyes if it is in inverse or direct order (false==inverse)
void Face::drawPrimitive(bool dir)
{
int num=(int)(vertex.size());
int i;
if(convex){
glBegin(GL_POLYGON);
if(clockwise==dir){
for(i=0;i<num;i++)
glVertex3dv(vertex[i].values);
}
else{
for(i=num-1;i>=0;i--)
glVertex3dv(vertex[i].values);
}
glEnd();
}
else{
GLUtesselator *TESS=gluNewTess();
gluTessCallback(TESS,GLU_BEGIN,MR_TESS glBegin);
gluTessCallback(TESS,GLU_VERTEX,MR_TESS glVertex3dv);
gluTessCallback(TESS,GLU_END, glEnd);
gluTessBeginPolygon(TESS, NULL);
gluTessBeginContour(TESS);
if(clockwise==dir){
for(i=0;i<num;i++)gluTessVertex(TESS,vertex[i].values,vertex[i].values);
}
else{
for(i=num-1;i>=0;i--)gluTessVertex(TESS,vertex[i].values,vertex[i].values);
}
gluTessEndContour(TESS);
gluTessEndPolygon(TESS);
gluDeleteTess(TESS);
}
}
// Build PolyTessGeo Object from OGR Polygon
// Using OpenGL/GLU tesselator
int PolyTessGeo::PolyTessGeoGL(OGRPolygon *poly, bool bSENC_SM, double ref_lat, double ref_lon)
{
#ifdef ocpnUSE_GL
int iir, ip;
int *cntr;
GLdouble *geoPt;
wxString sout;
wxString sout1;
wxString stemp;
// Make a quick sanity check of the polygon coherence
bool b_ok = true;
OGRLineString *tls = poly->getExteriorRing();
if(!tls) {
b_ok = false;
}
else {
int tnpta = poly->getExteriorRing()->getNumPoints();
if(tnpta < 3 )
b_ok = false;
}
for( iir=0 ; iir < poly->getNumInteriorRings() ; iir++)
{
int tnptr = poly->getInteriorRing(iir)->getNumPoints();
if( tnptr < 3 )
b_ok = false;
}
if( !b_ok )
return ERROR_BAD_OGRPOLY;
#ifdef __WXMSW__
// If using the OpenGL dlls provided with Windows,
// load the dll and establish addresses of the entry points needed
#ifdef USE_GLU_DLL
if(!s_glu_dll_ready)
{
s_hGLU_DLL = LoadLibrary("glu32.dll");
if (s_hGLU_DLL != NULL)
{
s_lpfnTessProperty = (LPFNDLLTESSPROPERTY)GetProcAddress(s_hGLU_DLL,"gluTessProperty");
s_lpfnNewTess = (LPFNDLLNEWTESS)GetProcAddress(s_hGLU_DLL, "gluNewTess");
s_lpfnTessBeginContour = (LPFNDLLTESSBEGINCONTOUR)GetProcAddress(s_hGLU_DLL, "gluTessBeginContour");
s_lpfnTessEndContour = (LPFNDLLTESSENDCONTOUR)GetProcAddress(s_hGLU_DLL, "gluTessEndContour");
s_lpfnTessBeginPolygon = (LPFNDLLTESSBEGINPOLYGON)GetProcAddress(s_hGLU_DLL, "gluTessBeginPolygon");
s_lpfnTessEndPolygon = (LPFNDLLTESSENDPOLYGON)GetProcAddress(s_hGLU_DLL, "gluTessEndPolygon");
s_lpfnDeleteTess = (LPFNDLLDELETETESS)GetProcAddress(s_hGLU_DLL, "gluDeleteTess");
s_lpfnTessVertex = (LPFNDLLTESSVERTEX)GetProcAddress(s_hGLU_DLL, "gluTessVertex");
s_lpfnTessCallback = (LPFNDLLTESSCALLBACK)GetProcAddress(s_hGLU_DLL, "gluTessCallback");
s_glu_dll_ready = true;
}
else
{
return ERROR_NO_DLL;
}
}
#endif
#endif
// Allocate a work buffer, which will be grown as needed
#define NINIT_BUFFER_LEN 10000
s_pwork_buf = (GLdouble *)malloc(NINIT_BUFFER_LEN * 2 * sizeof(GLdouble));
s_buf_len = NINIT_BUFFER_LEN * 2;
s_buf_idx = 0;
// Create an array to hold pointers to allocated vertices created by "combine" callback,
// so that they may be deleted after tesselation.
s_pCombineVertexArray = new wxArrayPtrVoid;
// Create tesselator
GLUtessobj = gluNewTess();
// Register the callbacks
gluTessCallback(GLUtessobj, GLU_TESS_BEGIN, (GLvoid (__CALL_CONVENTION *) ())&beginCallback);
gluTessCallback(GLUtessobj, GLU_TESS_BEGIN, (GLvoid (__CALL_CONVENTION *) ())&beginCallback);
gluTessCallback(GLUtessobj, GLU_TESS_VERTEX, (GLvoid (__CALL_CONVENTION *) ())&vertexCallback);
gluTessCallback(GLUtessobj, GLU_TESS_END, (GLvoid (__CALL_CONVENTION *) ())&endCallback);
gluTessCallback(GLUtessobj, GLU_TESS_COMBINE, (GLvoid (__CALL_CONVENTION *) ())&combineCallback);
// gluTessCallback(GLUtessobj, GLU_TESS_ERROR, (GLvoid (__CALL_CONVENTION *) ())&errorCallback);
// glShadeModel(GL_SMOOTH);
gluTessProperty(GLUtessobj, GLU_TESS_WINDING_RULE,
GLU_TESS_WINDING_POSITIVE );
// gluTess algorithm internally selects vertically oriented triangle strips and fans.
// This orientation is not optimal for conventional memory-mapped raster display shape filling.
// We can "fool" the algorithm by interchanging the x and y vertex values passed to gluTessVertex
// and then reverting x and y on the resulting vertexCallbacks.
// In this implementation, we will explicitely set the preferred orientation.
//Set the preferred orientation
tess_orient = TESS_HORZ; // prefer horizontal tristrips
// PolyGeo BBox as lat/lon
OGREnvelope Envelope;
poly->getEnvelope(&Envelope);
xmin = Envelope.MinX;
ymin = Envelope.MinY;
xmax = Envelope.MaxX;
ymax = Envelope.MaxY;
// Get total number of contours
m_ncnt = 1; // always exterior ring
int nint = poly->getNumInteriorRings(); // interior rings
m_ncnt += nint;
// Allocate cntr array
cntr = (int *)malloc(m_ncnt * sizeof(int));
// Get total number of points(vertices)
int npta = poly->getExteriorRing()->getNumPoints();
cntr[0] = npta;
npta += 2; // fluff
for( iir=0 ; iir < nint ; iir++)
{
int nptr = poly->getInteriorRing(iir)->getNumPoints();
cntr[iir+1] = nptr;
npta += nptr + 2;
}
// printf("pPoly npta: %d\n", npta);
geoPt = (GLdouble *)malloc((npta) * 3 * sizeof(GLdouble)); // vertex array
// Grow the work buffer if necessary
if((npta * 4) > s_buf_len)
{
s_pwork_buf = (GLdouble *)realloc(s_pwork_buf, npta * 4 * sizeof(GLdouble));
s_buf_len = npta * 4;
}
// Define the polygon
gluTessBeginPolygon(GLUtessobj, NULL);
// Create input structures
// Exterior Ring
int npte = poly->getExteriorRing()->getNumPoints();
cntr[0] = npte;
GLdouble *ppt = geoPt;
// Check and account for winding direction of ring
bool cw = !(poly->getExteriorRing()->isClockwise() == 0);
double x0, y0, x, y;
OGRPoint p;
if(cw)
{
poly->getExteriorRing()->getPoint(0, &p);
x0 = p.getX();
y0 = p.getY();
}
else
{
poly->getExteriorRing()->getPoint(npte-1, &p);
x0 = p.getX();
y0 = p.getY();
}
// Transcribe contour to an array of doubles, with duplicates eliminated
double *DPbuffer = (double *)malloc(npte * 2 * sizeof(double));
double *DPrun = DPbuffer;
int nPoints = npte;
for(ip = 0 ; ip < npte ; ip++)
{
int pidx;
if(cw)
pidx = npte - ip - 1;
else
pidx = ip;
poly->getExteriorRing()->getPoint(pidx, &p);
x = p.getX();
y = p.getY();
if( ((fabs(x-x0) > EQUAL_EPS) || (fabs(y-y0) > EQUAL_EPS)))
{
GLdouble *ppt_temp = ppt;
if(tess_orient == TESS_VERT)
{
*DPrun++ = x;
*DPrun++ = y;
}
else
{
*DPrun++ = y;
*DPrun++ = x;
}
x0 = x;
y0 = y;
}
else
nPoints--;
}
if(nPoints > 5 && (m_LOD_meters > .01)){
index_keep.Clear();
index_keep.Add(0);
index_keep.Add(nPoints-1);
index_keep.Add(1);
index_keep.Add(nPoints-2);
DouglasPeucker(DPbuffer, 1, nPoints-2, m_LOD_meters/(1852 * 60), &index_keep);
// printf("DP Reduction: %d/%d\n", index_keep.GetCount(), nPoints);
g_keep += index_keep.GetCount();
g_orig += nPoints;
// printf("...................Running: %g\n", (double)g_keep/g_orig);
}
else {
index_keep.Clear();
for(int i = 0 ; i < nPoints ; i++)
index_keep.Add(i);
}
cntr[0] = index_keep.GetCount();
// Mark the keepers by adding a simple constant to X
for(unsigned int i=0 ; i < index_keep.GetCount() ; i++){
int k = index_keep.Item(i);
DPbuffer[2*k] += 2000.;
}
// Declare the gluContour and copy the points
gluTessBeginContour(GLUtessobj);
DPrun = DPbuffer;
for(ip = 0 ; ip < nPoints ; ip++)
{
x = *DPrun++;
y = *DPrun++;
if(x > 1000.){
GLdouble *ppt_top = ppt;
*ppt++ = x-2000;
*ppt++ = y;
*ppt++ = 0;
gluTessVertex( GLUtessobj, ppt_top, ppt_top ) ;
}
}
gluTessEndContour(GLUtessobj);
free(DPbuffer);
// Now the interior contours
for(iir=0 ; iir < nint ; iir++)
{
gluTessBeginContour(GLUtessobj);
int npti = poly->getInteriorRing(iir)->getNumPoints();
// Check and account for winding direction of ring
bool cw = !(poly->getInteriorRing(iir)->isClockwise() == 0);
if(!cw)
{
poly->getInteriorRing(iir)->getPoint(0, &p);
x0 = p.getX();
y0 = p.getY();
}
else
{
poly->getInteriorRing(iir)->getPoint(npti-1, &p);
x0 = p.getX();
y0 = p.getY();
}
// Transcribe points to vertex array, in proper order with no duplicates
// also, accounting for tess_orient
for(int ip = 0 ; ip < npti ; ip++)
{
OGRPoint p;
int pidx;
if(!cw) // interior contours must be cw
pidx = npti - ip - 1;
else
pidx = ip;
poly->getInteriorRing(iir)->getPoint(pidx, &p);
x = p.getX();
y = p.getY();
if((fabs(x-x0) > EQUAL_EPS) || (fabs(y-y0) > EQUAL_EPS))
{
GLdouble *ppt_temp = ppt;
if(tess_orient == TESS_VERT)
{
*ppt++ = x;
*ppt++ = y;
}
else
{
*ppt++ = y;
*ppt++ = x;
}
*ppt++ = 0.0;
gluTessVertex( GLUtessobj, ppt_temp, ppt_temp ) ;
// printf("tess from Poly, internal vertex %d %g %g\n", ip, x, y);
}
else
cntr[iir+1]--;
x0 = x;
y0 = y;
}
gluTessEndContour(GLUtessobj);
}
// Store some SM conversion data in static store,
// for callback access
s_ref_lat = ref_lat;
s_ref_lon = ref_lon;
s_bSENC_SM = bSENC_SM;
s_bmerc_transform = false;
// Ready to kick off the tesselator
s_pTPG_Last = NULL;
s_pTPG_Head = NULL;
s_nvmax = 0;
gluTessEndPolygon(GLUtessobj); // here it goes
m_nvertex_max = s_nvmax; // record largest vertex count, updates in callback
// Tesselation all done, so...
// Create the data structures
m_ppg_head = new PolyTriGroup;
m_ppg_head->m_bSMSENC = s_bSENC_SM;
m_ppg_head->nContours = m_ncnt;
m_ppg_head->pn_vertex = cntr; // pointer to array of poly vertex counts
m_ppg_head->data_type = DATA_TYPE_DOUBLE;
// Transcribe the raw geometry buffer
// Converting to float as we go, and
// allowing for tess_orient
// Also, convert to SM if requested
// Recalculate the size of the geometry buffer
int nptfinal = cntr[0] + 2;
for(int i=0 ; i < nint ; i++)
nptfinal += cntr[i+1] + 2;
// No longer need the full geometry in the SENC,
nptfinal = 1;
m_nwkb = (nptfinal + 1) * 2 * sizeof(float);
m_ppg_head->pgroup_geom = (float *)calloc(sizeof(float), (nptfinal + 1) * 2);
float *vro = m_ppg_head->pgroup_geom;
ppt = geoPt;
float tx,ty;
for(ip = 0 ; ip < nptfinal ; ip++)
{
if(TESS_HORZ == tess_orient)
{
ty = *ppt++;
tx = *ppt++;
}
else
{
tx = *ppt++;
ty = *ppt++;
}
if(bSENC_SM)
{
// Calculate SM from chart common reference point
double easting, northing;
toSM(ty, tx, ref_lat, ref_lon, &easting, &northing);
*vro++ = easting; // x
*vro++ = northing; // y
}
else
{
*vro++ = tx; // lon
*vro++ = ty; // lat
}
ppt++; // skip z
}
m_ppg_head->tri_prim_head = s_pTPG_Head; // head of linked list of TriPrims
// Convert the Triangle vertex arrays into a single memory allocation of floats
// to reduce SENC size and enable efficient access later
// First calculate the total byte size
int total_byte_size = 2 * sizeof(float);
TriPrim *p_tp = m_ppg_head->tri_prim_head;
while( p_tp ) {
total_byte_size += p_tp->nVert * 2 * sizeof(float);
p_tp = p_tp->p_next; // pick up the next in chain
}
float *vbuf = (float *)malloc(total_byte_size);
p_tp = m_ppg_head->tri_prim_head;
float *p_run = vbuf;
while( p_tp ) {
float *pfbuf = p_run;
GLdouble *pdouble_buf = (GLdouble *)p_tp->p_vertex;
for( int i=0 ; i < p_tp->nVert * 2 ; ++i){
float x = (float)( *((GLdouble *)pdouble_buf) );
pdouble_buf++;
*p_run++ = x;
}
free(p_tp->p_vertex);
p_tp->p_vertex = (double *)pfbuf;
p_tp = p_tp->p_next; // pick up the next in chain
}
m_ppg_head->bsingle_alloc = true;
m_ppg_head->single_buffer = (unsigned char *)vbuf;
m_ppg_head->single_buffer_size = total_byte_size;
m_ppg_head->data_type = DATA_TYPE_FLOAT;
gluDeleteTess(GLUtessobj);
free( s_pwork_buf );
s_pwork_buf = NULL;
free (geoPt);
// Free up any "Combine" vertices created
for(unsigned int i = 0; i < s_pCombineVertexArray->GetCount() ; i++)
free (s_pCombineVertexArray->Item(i));
delete s_pCombineVertexArray;
m_bOK = true;
#endif // #ifdef ocpnUSE_GL
return 0;
}
// Build PolyTessGeo Object from OGR Polygon
// Using OpenGL/GLU tesselator
int PolyTessGeo::BuildTessGLU()
{
unsigned int iir, ip;
GLdouble *geoPt;
#if 0
// Make a quick sanity check of the polygon coherence
bool b_ok = true;
OGRLineString *tls = poly->getExteriorRing();
if(!tls) {
b_ok = false;
}
else {
int tnpta = poly->getExteriorRing()->getNumPoints();
if(tnpta < 3 )
b_ok = false;
}
for( iir=0 ; iir < poly->getNumInteriorRings() ; iir++)
{
int tnptr = poly->getInteriorRing(iir)->getNumPoints();
if( tnptr < 3 )
b_ok = false;
}
if( !b_ok )
return ERROR_BAD_OGRPOLY;
#endif
// Allocate a work buffer, which will be grown as needed
#define NINIT_BUFFER_LEN 10000
m_pwork_buf = (GLdouble *)malloc(NINIT_BUFFER_LEN * 2 * sizeof(GLdouble));
m_buf_len = NINIT_BUFFER_LEN * 2;
m_buf_idx = 0;
// Create an array to hold pointers to allocated vertices created by "combine" callback,
// so that they may be deleted after tesselation.
m_pCombineVertexArray = new wxArrayPtrVoid;
// Create tesselator
GLUtessobj = gluNewTess();
// Register the callbacks
gluTessCallback(GLUtessobj, GLU_TESS_BEGIN_DATA, (GLvoid (*) ())&beginCallback);
gluTessCallback(GLUtessobj, GLU_TESS_BEGIN_DATA, (GLvoid (*) ())&beginCallback);
gluTessCallback(GLUtessobj, GLU_TESS_VERTEX_DATA, (GLvoid (*) ())&vertexCallback);
gluTessCallback(GLUtessobj, GLU_TESS_END_DATA, (GLvoid (*) ())&endCallback);
gluTessCallback(GLUtessobj, GLU_TESS_COMBINE_DATA, (GLvoid (*) ())&combineCallback);
gluTessCallback(GLUtessobj, GLU_TESS_ERROR_DATA, (GLvoid (*) ())&errorCallback);
gluTessProperty(GLUtessobj, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_POSITIVE );
gluTessNormal(GLUtessobj, 0, 0, 1);
// Get total number of points(vertices) to build a buffer
int npta = 0;
for( int i=0 ; i < m_ncnt ; i++)
npta += m_cntr[i];
geoPt = (GLdouble *)malloc((npta + 6) * 3 * sizeof(GLdouble)); // vertex array
// Grow the work buffer if necessary
if((npta * 4) > m_buf_len)
{
m_pwork_buf = (GLdouble *)realloc(m_pwork_buf, npta * 4 * sizeof(GLdouble));
m_buf_len = npta * 4;
}
// Define the polygon
gluTessBeginPolygon(GLUtessobj, this);
// Check and account for winding direction of ring
double x0, y0, x, y;
// OGRPoint p;
wxPoint2DDouble *pp = (wxPoint2DDouble *)m_vertexPtrArray[0];
bool cw = !isRingClockwise(pp, m_cntr[0]);
//pp++; // skip 0?
if(cw)
{
x0 = pp->m_x;
y0 = pp->m_y;
}
else
{
x0 = pp[m_cntr[0]-1].m_x;
y0 = pp[m_cntr[0]-1].m_y;
}
unsigned int ptValid = m_cntr[0];
// Transcribe points to vertex array, in proper order with no duplicates
// also, accounting for tess_orient
GLdouble *ppt = geoPt;
for(ip = 0 ; ip < (unsigned int)m_cntr[0] ; ip++)
{
int pidx;
if(cw)
pidx = m_cntr[0] - ip - 1;
else
pidx = ip;
x = pp[pidx].m_x;
y = pp[pidx].m_y;
if((fabs(x-x0) > EQUAL_EPS) || (fabs(y-y0) > EQUAL_EPS))
{
if(m_tess_orient == TESS_VERT)
{
*ppt++ = x;
*ppt++ = y;
*ppt++ = 0;
}
else
{
*ppt++ = y;
*ppt++ = x;
*ppt++ = 0;
}
}
else
ptValid--;
x0 = x;
y0 = y;
}
// Apply LOD reduction
int beforeLOD = ptValid;
int afterLOD = beforeLOD;
if(ptValid > 20 && (m_LOD_meters > .01)) {
std::vector<bool> bool_keep(ptValid, false);
// Keep a few key points
bool_keep[0] = true;
bool_keep[1] = true;
bool_keep[ptValid-1] = true;
bool_keep[ptValid-2] = true;
DouglasPeuckerDI(geoPt, 1, ptValid-2, m_LOD_meters, bool_keep);
// Create a new buffer
double *LOD_result = (double *)malloc((m_cntr[0]) * 3 * sizeof(double));
double *plod = LOD_result;
int kept_LOD =0;
for(unsigned int i=0 ; i < ptValid ; i++){
if(bool_keep[i]){
double x = geoPt[i*3];
double y = geoPt[(i*3) + 1];
*plod++ = x;
*plod++ = y;
*plod++ = 0;
kept_LOD++;
}
}
beforeLOD = ptValid;
afterLOD = kept_LOD;
// Copy the lod points back into the vertex buffer
memcpy(geoPt, LOD_result, kept_LOD * 3 * sizeof(double));
free(LOD_result);
ptValid = kept_LOD;
}
// Declare the gluContour and copy the points
gluTessBeginContour(GLUtessobj);
double *DPrun = geoPt;
for(ip = 0 ; ip < ptValid ; ip++) {
gluTessVertex( GLUtessobj, DPrun, DPrun ) ;
DPrun += 3;
}
gluTessEndContour(GLUtessobj);
// Now the interior contours
#if 1
int gpIndex = m_cntr[0];
for(iir=0; iir < (unsigned int)m_ncnt-1; iir++){
wxPoint2DDouble *pp = (wxPoint2DDouble *)m_vertexPtrArray[iir + 1];
int npti = m_cntr[iir+1];
ptValid = npti;
double *ppt = &geoPt[gpIndex * 3]; // next available location in geoPT
double *DPStart = ppt;
// Check and account for winding direction of ring
bool cw = isRingClockwise(pp, m_cntr[iir+1]);
if(cw)
{
x0 = pp[0].m_x;
y0 = pp[0].m_y;
}
else
{
x0 = pp[npti-1].m_x;
y0 = pp[npti-1].m_y;
}
// Transcribe points to vertex array, in proper order with no duplicates
// also, accounting for tess_orient
for(int ip = 0 ; ip < npti ; ip++)
{
int pidx;
if(cw) // interior contours must be cw
pidx = npti - ip - 1;
else
pidx = ip;
x = pp[pidx].m_x;
y = pp[pidx].m_y;
if((fabs(x-x0) > EQUAL_EPS) || (fabs(y-y0) > EQUAL_EPS))
{
if(m_tess_orient == TESS_VERT)
{
*ppt++ = x;
*ppt++ = y;
*ppt++ = 0;
}
else
{
*ppt++ = y;
*ppt++ = x;
*ppt++ = 0;
}
}
else
ptValid--;
x0 = x;
y0 = y;
}
// Declare the gluContour and reference the points
gluTessBeginContour(GLUtessobj);
double *DPruni = DPStart;
for(ip = 0 ; ip < ptValid ; ip++)
{
gluTessVertex( GLUtessobj, DPruni, DPruni ) ;
DPruni += 3;
}
gluTessEndContour(GLUtessobj);
gpIndex += m_cntr[iir+1];
}
#endif
m_pTPG_Last = NULL;
m_pTPG_Head = NULL;
m_nvmax = 0;
// Ready to kick off the tesselator
gluTessEndPolygon(GLUtessobj); // here it goes
m_nvertex_max = m_nvmax; // record largest vertex count, updates in callback
// Tesselation all done, so...
// Create the data structures
m_ppg_head = new PolyTriGroup;
m_ppg_head->m_bSMSENC = m_b_senc_sm;
m_ppg_head->nContours = m_ncnt;
m_ppg_head->pn_vertex = m_cntr; // pointer to array of poly vertex counts
m_ppg_head->data_type = DATA_TYPE_DOUBLE;
// Transcribe the raw geometry buffer
// Converting to float as we go, and
// allowing for tess_orient
// Also, convert to SM if requested
// Recalculate the size of the geometry buffer
unsigned int nptfinal = m_cntr[0] + 2;
// for(int i=0 ; i < nint ; i++)
// nptfinal += cntr[i+1] + 2;
// No longer need the full geometry in the SENC,
nptfinal = 1;
m_nwkb = (nptfinal + 1) * 2 * sizeof(float);
m_ppg_head->pgroup_geom = (float *)calloc(sizeof(float), (nptfinal + 1) * 2);
float *vro = m_ppg_head->pgroup_geom;
ppt = geoPt;
float tx,ty;
for(ip = 0 ; ip < nptfinal ; ip++)
{
if(TESS_HORZ == m_tess_orient)
{
ty = *ppt++;
tx = *ppt++;
}
else
{
tx = *ppt++;
ty = *ppt++;
}
if(m_b_senc_sm)
{
// Calculate SM from chart common reference point
double easting, northing;
toSM(ty, tx, m_ref_lat, m_ref_lon, &easting, &northing);
*vro++ = easting; // x
*vro++ = northing; // y
}
else
{
*vro++ = tx; // lon
*vro++ = ty; // lat
}
ppt++; // skip z
}
m_ppg_head->tri_prim_head = m_pTPG_Head; // head of linked list of TriPrims
// Convert the Triangle vertex arrays into a single memory allocation of floats
// to reduce SENC size and enable efficient access later
// First calculate the total byte size
int total_byte_size = 2 * sizeof(float);
TriPrim *p_tp = m_ppg_head->tri_prim_head;
while( p_tp ) {
total_byte_size += p_tp->nVert * 2 * sizeof(float);
p_tp = p_tp->p_next; // pick up the next in chain
}
float *vbuf = (float *)malloc(total_byte_size);
p_tp = m_ppg_head->tri_prim_head;
float *p_run = vbuf;
while( p_tp ) {
float *pfbuf = p_run;
GLdouble *pdouble_buf = (GLdouble *)p_tp->p_vertex;
for( int i=0 ; i < p_tp->nVert * 2 ; ++i){
float x = (float)( *((GLdouble *)pdouble_buf) );
pdouble_buf++;
*p_run++ = x;
}
free(p_tp->p_vertex);
p_tp->p_vertex = (double *)pfbuf;
p_tp = p_tp->p_next; // pick up the next in chain
}
m_ppg_head->bsingle_alloc = true;
m_ppg_head->single_buffer = (unsigned char *)vbuf;
m_ppg_head->single_buffer_size = total_byte_size;
m_ppg_head->data_type = DATA_TYPE_FLOAT;
gluDeleteTess(GLUtessobj);
free( m_pwork_buf );
m_pwork_buf = NULL;
free (geoPt);
// Free up any "Combine" vertices created
for(unsigned int i = 0; i < m_pCombineVertexArray->GetCount() ; i++)
free (m_pCombineVertexArray->Item(i));
delete m_pCombineVertexArray;
m_bOK = true;
return 0;
}
void CMFCTessView::OnDraw(CDC* pDC)
{
CMFCTessDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
// TODO: add draw code for native data here
//some per-drawing init stuff
glLoadIdentity();
//setup drawing dimensions, etc
CPoint vptorg = m_pDC->GetViewportOrg() ; //note m_pDC, NOT pDC
CRect rect ;
GetWindowRect( &rect ) ;
int dx = rect.Width() ;
int dy = rect.Height() ;
glViewport( 0, 0, dx, dy );
glMatrixMode( GL_MODELVIEW );
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
// create bitmaps for the device context font's first 256 glyphs
HDC hdc = m_pDC->GetSafeHdc() ;
wglUseFontBitmaps(hdc, 0, 256, 1000);
glListBase(1000);
float R ;
if( pDoc->m_ContourList.GetCount() > 0 )
{
CalculateExtents() ; // Collect overall figure extents (in meters)
R = Radius ;
//11/29/03 experiment to eliminate probs w/non-square windows
float glleft = -R ;
float gltop = +R ;
float nearplane = -R ; //rev 07/25/03
float farplane = R ; //rev 07/25/03
float glleft2 = glleft ;
float gltop2 = gltop ;
float glright2 = ( glleft + 2*R ) ;
float glbottom2 = ( gltop - 2*R ) ;
//adjust for non-square viewing window
float dxdy = (float)dx/(float)dy ; //=1.00 for square window
if( dxdy > 1 )
{
glOrtho( glleft2*dxdy , glright2*dxdy, glbottom2, gltop2, nearplane, farplane ) ;
}
else
{
glOrtho( glleft2 , glright2, glbottom2/dxdy, gltop2/dxdy, nearplane, farplane ) ;
}
glTranslatef( -m_Center.x, -m_Center.y, -m_Center.z ) ;
}
else
{
CString txtstr ;
glOrtho( -1.f , 1.f, -1.f, 1.f, -1.f, 1.f ) ;
glTranslatef( 0.f, 0.f, 0.f ) ;
txtstr = "Nothing to draw" ;
glColor3f( 0.f, 0.f, 0.f ) ;
glRasterPos3f(0.0F, 0.0F, 0.0F );
glCallLists(txtstr.GetLength(), GL_UNSIGNED_BYTE, txtstr);
//clean up & exit
glFlush();
glDeleteLists(1000, 256) ;
SwapBuffers( m_pDC->GetSafeHdc() );
return ;
}
glPushMatrix() ;
//01/09/05 implement tessellation
GLUtesselator *tobj;
tobj = gluNewTess();
//added 02/09/05 as part of mem leak fix
while( gm_VertexPtrList.GetCount() > 0 )
{
GLdouble* pV = (GLdouble*)gm_VertexPtrList.RemoveHead() ;
delete[] pV ;
pV = NULL ;
}
gluTessCallback(tobj, GLU_TESS_BEGIN, (void (CALLBACK *) ())beginCallback);
gluTessCallback(tobj, GLU_TESS_VERTEX, (void (CALLBACK *) ()) vertexCallback);
gluTessCallback(tobj, GLU_TESS_END, (void (CALLBACK *) ())endCallback);
gluTessCallback(tobj, GLU_TESS_ERROR,(void (CALLBACK *) ())errorCallback);
gluTessCallback(tobj, GLU_TESS_COMBINE, (void (CALLBACK *) ())combineCallback);
glShadeModel(GL_SMOOTH);
gluTessProperty(tobj, GLU_TESS_WINDING_RULE,
m_WindingRule );
//only one polygon, but multiple contours
gluTessBeginPolygon(tobj, NULL);
POSITION pos = pDoc->m_ContourList.GetHeadPosition() ;
while ( pos )
{
CContour* pCtr = (CContour*)pDoc->m_ContourList.GetNext( pos ) ;
ASSERT( pCtr != NULL && pCtr->m_NumVertex > 0 && pCtr->m_ppVertexArray != NULL ) ;
int numcorners = pCtr->m_NumVertex ;
gluTessBeginContour(tobj);
for( int cnridx = 0; cnridx < numcorners; cnridx++ )
{
GLdouble* glvert = pCtr->m_ppVertexArray[cnridx];
gluTessVertex( tobj, glvert, glvert ) ;
TRACE( "Draw: Sent vertex(%f,%f,%f,%f,%f,%f)\n", glvert[0],glvert[1],glvert[2],glvert[3],glvert[4],glvert[5] ) ;
}
gluTessEndContour(tobj);
} //end of all contour definitions
gluTessEndPolygon(tobj);
//clean up & exit
glFlush();
glDeleteLists(1000, 256) ; // delete our 256 glyph display lists
SwapBuffers( m_pDC->GetSafeHdc() );
gluDeleteTess( tobj ) ;
//added 02/09/05 as part of mem leak fix
while( gm_VertexPtrList.GetCount() > 0 )
{
GLdouble* pV = (GLdouble*)gm_VertexPtrList.RemoveHead() ;
delete[] pV ;
pV = NULL ;
}
}
PsychError SCREENFillPoly(void)
{
PsychColorType color;
PsychWindowRecordType *windowRecord;
double whiteValue;
int i, mSize, nSize, pSize;
psych_bool isArgThere;
double *pointList;
double isConvex;
int j,k;
int flag;
double z;
combinerCacheSlot = 0;
combinerCacheSize = 0;
combinerCache = NULL;
//all sub functions should have these two lines
PsychPushHelp(useString, synopsisString,seeAlsoString);
if(PsychIsGiveHelp()){PsychGiveHelp();return(PsychError_none);};
//check for superfluous arguments
PsychErrorExit(PsychCapNumInputArgs(4)); //The maximum number of inputs
PsychErrorExit(PsychCapNumOutputArgs(0)); //The maximum number of outputs
//get the window record from the window record argument and get info from the window record
PsychAllocInWindowRecordArg(1, kPsychArgRequired, &windowRecord);
//Get the color argument or use the default, then coerce to the form determened by the window depth.
isArgThere=PsychCopyInColorArg(2, FALSE, &color);
if(!isArgThere){
whiteValue=PsychGetWhiteValueFromWindow(windowRecord);
PsychLoadColorStruct(&color, kPsychIndexColor, whiteValue ); //index mode will coerce to any other.
}
PsychCoerceColorMode( &color);
//get the list of pairs and validate.
PsychAllocInDoubleMatArg(3, kPsychArgRequired, &mSize, &nSize, &pSize, &pointList);
if(nSize!=2) PsychErrorExitMsg(PsychError_user, "Width of pointList must be 2");
if(mSize<3) PsychErrorExitMsg(PsychError_user, "Polygons must consist of at least 3 points; M dimension of pointList was < 3!");
if(pSize>1) PsychErrorExitMsg(PsychError_user, "pointList must be a 2D matrix, not a 3D matrix!");
isConvex = -1;
PsychCopyInDoubleArg(4, kPsychArgOptional, &isConvex);
// On non-OpenGL1/2 we always force isConvex to zero, so the GLU tesselator is
// always used. This because the tesselator only emits GL_TRIANGLES and GL_TRIANGLE_STRIP
// and GL_TRIANGLE_FANS primitives which are supported on all current OpenGL API's, whereas
// or "classic" fast-path needs GL_POLYGONS, which are only supported on classic OpenGL1/2:
if (!PsychIsGLClassic(windowRecord)) isConvex = 0;
// Enable this windowRecords framebuffer as current drawingtarget:
PsychSetDrawingTarget(windowRecord);
// Set default drawshader:
PsychSetShader(windowRecord, -1);
PsychUpdateAlphaBlendingFactorLazily(windowRecord);
PsychSetGLColor(&color, windowRecord);
///////// Test for convexity ////////
// This algorithm checks, if the polygon is definitely convex, or not.
// We take the slow-path, if polygon is non-convex or if we can't prove
// that it is convex.
//
// Algorithm adapted from: http://astronomy.swin.edu.au/~pbourke/geometry/clockwise/
// Which was written by Paul Bourke, 1998.
//
// -> This webpage explains the mathematical principle behind the test and provides
// a C-Source file which has been adapted for use here.
//
if (isConvex == -1) {
flag = 0;
for (i=0; i < mSize; i++) {
j = (i + 1) % mSize;
k = (i + 2) % mSize;
z = (pointList[j] - pointList[i]) * (pointList[k+mSize] - pointList[j+mSize]);
z -= (pointList[j+mSize] - pointList[i+mSize]) * (pointList[k] - pointList[j]);
if (z < 0) {
flag |= 1;
}
else if (z > 0) {
flag |= 2;
}
if (flag == 3) {
// This is definitely a CONCAVE polygon --> not Convex --> Take slow but safe path.
break;
}
}
if (flag!=0 && flag!=3) {
// This is a convex polygon --> Take fast path.
isConvex = 1;
}
else {
// This is a complex polygon --> can't determine if it is convex or not --> Take slow but safe path.
isConvex = 0;
}
}
////// Switch between fast path and slow path, depending on convexity of polygon:
if (isConvex > 0) {
// Convex, non-self-intersecting polygon - Take the fast-path:
glBegin(GL_POLYGON);
for(i=0;i<mSize;i++) glVertex2d((GLdouble)pointList[i], (GLdouble)pointList[i+mSize]);
glEnd();
}
else {
// Possibly concave and/or self-intersecting polygon - At least we couldn't prove it is convex.
// Take the slow, but safe, path using GLU-Tesselators to break it up into a couple of convex, simple
// polygons:
// Create and initialize a new GLU-Tesselator object, if needed:
if (NULL == tess) {
// Create tesselator:
tess = gluNewTess();
if (NULL == tess) PsychErrorExitMsg(PsychError_outofMemory, "Out of memory condition in Screen('FillPoly')! Not enough space.");
// Assign our callback-functions:
gluTessCallback(tess, GLU_TESS_BEGIN, GLUTESSCBCASTER PsychtcbBegin);
gluTessCallback(tess, GLU_TESS_VERTEX, GLUTESSCBCASTER PsychtcbVertex);
gluTessCallback(tess, GLU_TESS_END, GLUTESSCBCASTER PsychtcbEnd);
gluTessCallback(tess, GLU_TESS_COMBINE, GLUTESSCBCASTER PsychtcbCombine);
// Define all tesselated polygons to lie in the x-y plane:
gluTessNormal(tess, 0, 0, 1);
}
// We need to hold the values in a temporary array:
if (tempvsize < mSize) {
tempvsize = ((mSize / 1000) + 1) * 1000;
tempv = (double*) realloc((void*) tempv, sizeof(double) * 3 * tempvsize);
if (NULL == tempv) PsychErrorExitMsg(PsychError_outofMemory, "Out of memory condition in Screen('FillPoly')! Not enough space.");
}
// Now submit our Polygon for tesselation:
gluTessBeginPolygon(tess, NULL);
gluTessBeginContour(tess);
for(i=0; i < mSize; i++) {
tempv[i*3]=(GLdouble) pointList[i];
tempv[i*3+1]=(GLdouble) pointList[i+mSize];
tempv[i*3+2]=0;
gluTessVertex(tess, (GLdouble*) &(tempv[i*3]), (void*) &(tempv[i*3]));
}
// Process, finalize and render it by calling our callback-functions:
gluTessEndContour(tess);
gluTessEndPolygon (tess);
// Done with drawing the filled polygon. (Slow-Path)
}
// Mark end of drawing op. This is needed for single buffered drawing:
PsychFlushGL(windowRecord);
// printf("CombinerCalls %i out of %i allocated.\n", combinerCacheSlot, combinerCacheSize);
return(PsychError_none);
}
void SeedGLWidget::selectRegion()
{
/*if (_seedRegions.empty())
{
return;
}*/
glViewport (0, 0, 1024, 1024);
glBindTexture(GL_TEXTURE_2D, 0);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _fboId);
glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
glClearColor (0.0f, 0.0f, 0.0f, 0.0f);
glClear (GL_COLOR_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(0, _widgetWidth-_planeWidth, _widgetHeight, 0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glColor3f(1, 1, 1);
gluTessBeginPolygon(tessObj, NULL);
gluTessBeginContour(tessObj);
for (int i=0; i<_penTrack.size(); ++i)
{
gluTessVertex(tessObj, _penTrack[i], _penTrack[i]);
}
gluTessEndContour(tessObj);
gluTessEndPolygon(tessObj);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
GLubyte * tempBuffer = new GLubyte [1024*1024];
glBindTexture(GL_TEXTURE_2D, _texId);
glGetTexImage(GL_TEXTURE_2D, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, tempBuffer);
GLdouble modelMatrix[16];
GLdouble projMatrix[16];
int viewport[4];
int viewportWidth = _viewportHeight*(_widgetWidth-_planeWidth)*1.0/_widgetHeight;
glViewport (0, 0, 1024, 1024);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, viewportWidth, 0, _viewportHeight, -2000, 2000);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(_translateX, _translateY, 0);
glTranslatef(viewportWidth/2.0, _viewportHeight/2.0, 0);
setRotationMatrix();
_volumeData->setTransformMatrix();
glGetIntegerv(GL_VIEWPORT, viewport);
glGetDoublev(GL_MODELVIEW_MATRIX, modelMatrix);
glGetDoublev(GL_PROJECTION_MATRIX, projMatrix);
int minX = floor(_minDrawX*1023.0/(_widgetWidth-_planeWidth-1));
int maxX = ceil(_maxDrawX*1023.0/(_widgetWidth-_planeWidth-1));
int minY = floor((_widgetHeight-_maxDrawY)*1023.0/(_widgetHeight-1));
int maxY = ceil((_widgetHeight-_minDrawY)*1023.0/(_widgetHeight-1));
for (int i=minX; i<=maxX; ++i)
{
for (int j=minY; j<maxY; ++j)
{
if (tempBuffer[j*1024+i]>0)
{
double x, y, z;
gluUnProject(i, j, 0, modelMatrix, projMatrix, viewport, &x, &y, &z);
//add to seed region list
switch (_viewpoint)
{
case 1: //AXIAL
z = _seedData->_aSliceIdx;
break;
case 2: //CORONAL
y = _seedData->_cSliceIdx;
break;
case 3: //SAGITTAL
x = _seedData->_pSliceIdx;
break;
}
if (_bAddRegion)
{
_seedData->addSeedPoint(x,y,z, _currentSeedIndex);
} else
{
_seedData->removeSeedPoint(x,y,z,_currentSeedIndex);
}
}
}
}
delete tempBuffer;
_seedData->setASlice(_aSlicePos);
_seedData->setPSlice(_pSlicePos);
_seedData->setCSlice(_cSlicePos);
}
// tesselates the contours in preparation for a 3D output;
// returns true if all was fine, false otherwise
bool VRML_LAYER::Tesselate( VRML_LAYER* holes, bool aHolesOnly )
{
if( !tess )
{
error = "Tesselate(): GLU tesselator was not initialized";
return false;
}
pholes = holes;
Fault = false;
if( aHolesOnly )
gluTessProperty( tess, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_NEGATIVE );
else
gluTessProperty( tess, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_POSITIVE );
if( contours.size() < 1 || vertices.size() < 3 )
{
error = "Tesselate(): not enough vertices";
return false;
}
// finish the winding calculation on all vertices prior to setting 'fix'
if( !fix )
{
for( unsigned int i = 0; i < contours.size(); ++i )
{
if( contours[i]->size() < 3 )
continue;
VERTEX_3D* vp0 = vertices[ contours[i]->back() ];
VERTEX_3D* vp1 = vertices[ contours[i]->front() ];
areas[i] += ( vp1->x - vp0->x ) * ( vp1->y + vp0->y );
}
}
// prevent the addition of any further contours and contour vertices
fix = true;
// clear temporary internals which may have been used in a previous run
clearTmp();
// request an outline
gluTessProperty( tess, GLU_TESS_BOUNDARY_ONLY, GL_TRUE );
// adjust internal indices for extra points and holes
if( holes )
hidx = holes->GetSize();
else
hidx = 0;
eidx = idx + hidx;
if( aHolesOnly && ( checkNContours( true ) == 0 ) )
{
error = "tesselate(): no hole contours";
return false;
}
else if( !aHolesOnly && ( checkNContours( false ) == 0 ) )
{
error = "tesselate(): no solid contours";
return false;
}
// open the polygon
gluTessBeginPolygon( tess, this );
if( aHolesOnly )
{
pholes = NULL; // do not accept foreign holes
hidx = 0;
eidx = idx;
// add holes
pushVertices( true );
gluTessEndPolygon( tess );
if( Fault )
return false;
return true;
}
// add solid outlines
pushVertices( false );
// close the polygon
gluTessEndPolygon( tess );
if( Fault )
return false;
// if there are no outlines we cannot proceed
if( outline.empty() )
{
error = "tesselate(): no points in result";
return false;
}
// at this point we have a solid outline; add it to the tesselator
gluTessBeginPolygon( tess, this );
if( !pushOutline( NULL ) )
return false;
// add the holes contained by this object
pushVertices( true );
// import external holes (if any)
if( hidx && ( holes->Import( idx, tess ) < 0 ) )
{
std::ostringstream ostr;
ostr << "Tesselate():FAILED: " << holes->GetError();
error = ostr.str();
return false;
}
if( Fault )
return false;
// erase the previous outline data and vertex order
// but preserve the extra vertices
while( !outline.empty() )
{
delete outline.back();
outline.pop_back();
}
ordmap.clear();
ord = 0;
// go through the vertex lists and reset ephemeral parameters
for( unsigned int i = 0; i < vertices.size(); ++i )
{
vertices[i]->o = -1;
}
for( unsigned int i = 0; i < extra_verts.size(); ++i )
{
extra_verts[i]->o = -1;
}
// close the polygon; this creates the outline points
// and the point ordering list 'ordmap'
solid.clear();
gluTessEndPolygon( tess );
// repeat the last operation but request a tesselated surface
// rather than an outline; this creates the triangles list.
gluTessProperty( tess, GLU_TESS_BOUNDARY_ONLY, GL_FALSE );
gluTessBeginPolygon( tess, this );
if( !pushOutline( holes ) )
return false;
gluTessEndPolygon( tess );
if( Fault )
return false;
return true;
}
void MapDrawFunction(AG_Event *event)
{
GLdouble vz = -2.0;
GLfloat ambient[4] = { 0.0f, 0.0f, 0.0f, 1.0f };
GLfloat diffuse[4] = { 1.f, 1.0f, 1.0f, 1.0f };
GLfloat specular[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
int wireframe = 0;
enum { FLATSHADING, SMOOTHSHADING } shading = FLATSHADING;
int i;
GLfloat pos[4];
glLoadIdentity();
glPushAttrib(GL_POLYGON_BIT|GL_LIGHTING_BIT|GL_DEPTH_BUFFER_BIT);
glEnable(GL_POINT_SMOOTH);
glEnable(GL_DEPTH_TEST);
//glEnable(GL_LIGHTING);
//glEnable(GL_LIGHT0);
// Create light components
//GLfloat ambientLight[] = { 0.2f, 0.2f, 0.2f, 0.1f };
GLfloat diffuseLight[] = { 1, 1, 1, 1.0f };
GLfloat specularLight[] = { 0.5f, 0.5f, 0.5f, 1.0f };
GLfloat position[] = { cursorwX, cursorwY, 0.5f, 1.0f };
// Assign created components to GL_LIGHT0
//glLightfv(GL_LIGHT0, GL_AMBIENT, ambientLight);
glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuseLight);
glLightfv(GL_LIGHT0, GL_SPECULAR, specularLight);
glLightfv(GL_LIGHT0, GL_POSITION, position);
glLightf(GL_LIGHT0, GL_CONSTANT_ATTENUATION, 1.0f);
glLightf(GL_LIGHT0, GL_LINEAR_ATTENUATION, 0.002f);
glLightf(GL_LIGHT0, GL_QUADRATIC_ATTENUATION, 0.0f);
glEnable(GL_COLOR_MATERIAL);
glColorMaterial(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE);
glClearColor(0.0f,0.0f,0.0f,1.0f);
glPushMatrix();
glTranslated(0.0, 0.0, vz);
GLfloat visi[4]={1.0,0.0,0.0,1.0};
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, visi);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, visi);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, visi);
glColor3f(0.9,0.9,0.6);
mapdraw();
for (int i=0;i<sceneVertices.size();i++){
glBegin(GL_LINE_LOOP);
for (int j=0;j<sceneVertices[i].size();j++){
glVertex3f( sceneVertices[i][j][0], sceneVertices[i][j][1], 0.0f);
};
glEnd();
};
glColor3f(0.9,0.9,0.0);
for (int i=0;i<mapEnvCollision.h()+1;i++){
glBegin(GL_LINE_LOOP);
for (int j=0;j<mapEnvCollision[i].n();j++){
glVertex3f( mapEnvCollision[i][j].x(), mapEnvCollision[i][j].y(), 0.0f);
};
//glVertex3f( sceneVertices[i][0].x(), sceneVertices[i][0].y(), 0.0f);
glEnd();
};
gluTessBeginPolygon (tess, NULL);
gluTessBeginContour (tess);
GLdouble data[visiBounded.outer_boundary().size()][3];
CGAL::Polygon_2<Kernel>::Vertex_iterator vit;
i=0;
for (vit=visiBounded.outer_boundary().vertices_begin();vit!=visiBounded.outer_boundary().vertices_end();++vit)
{
data[i][0]=vit->x();
data[i][1]=vit->y();
data[i][2]=0;
gluTessVertex (tess, data[i], data[i]);
i++;
}
/*
for (i=0; i<visiPoly.n();i++)
{
data[i][0]=visiPoly[i].x();
data[i][1]=visiPoly[i].y();
data[i][2]=0;
gluTessVertex (tess, data[i], data[i]);
}
*/
gluTessEndContour (tess);
gluEndPolygon (tess);
glBegin(GL_LINE_LOOP);
for (int i=0;i<visiPoly.n();i++){
glVertex3f(visiPoly[i].x(),visiPoly[i].y(),0.0f);
}
glEnd();
glColor3f(1.0,0.0,0.0);
glBegin(GL_LINE_STRIP);
for (int i=0;i<motionPath.size();i++){
glVertex3f(motionPath[i].x(),motionPath[i].y(),0.1f);
}
glEnd();
//glPopMatrix();
GLfloat marker[4]={1.0,0.0,0.0,1.0};
//glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, marker);
glColor3f(1.0,0.0,0.0);
guest1.Draw();
glGetDoublev(GL_MODELVIEW_MATRIX,modelview);
glGetDoublev(GL_PROJECTION_MATRIX,projection);
glGetIntegerv(GL_VIEWPORT,viewport) ;
glColor3f(1.0,1.0,1.0);
glBegin(GL_TRIANGLES);
glVertex3f(cursorwX,cursorwY+1/sqrt(2)*10,1.0f);
glVertex3f(cursorwX-1/sqrt(2)*10,cursorwY-1/sqrt(2)*10,1.0f);
glVertex3f(cursorwX+1/sqrt(2)*10,cursorwY-1/sqrt(2)*10,1.0f);
glEnd();
glPopMatrix();
glPopAttrib();
};
void ProtoTessellator::beginPolygon() {
//tessellatedPrims = tessPrims;
gluTessBeginPolygon(tesselator, NULL);
}
void Boundary::render(bool invert) {
// Calculate the geometry of the border
calculate();
//glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE);
// Render the border
glBegin(GL_QUADS);
for (int i = 0; i < outerEdges.size(); i++) {
Edge out = outerEdges[i];
Edge in = innerEdges[i];
if (!invert) {
glColor4f(0.0, 0.0, 0.0, 0.0);
} else {
glColor4f(1.0, 1.0, 1.0, 1.0);
}
glVertex3f(out.a.x, out.a.y, 0.0);
glVertex3f(out.b.x, out.b.y, 0.0);
if (!invert) {
glColor4f(1.0, 1.0, 1.0, 1.0);
} else {
glColor4f(0.0, 0.0, 0.0, 0.0);
}
glVertex3f(in.b.x, in.b.y, 0.0);
glVertex3f(in.a.x, in.a.y, 0.0);
}
glEnd();
// Fill the border
if (!invert) {
glColor3f(1.0, 1.0, 1.0);
} else {
glColor3f(0.0, 0.0, 0.0);
}
GLUtesselator *tess = gluNewTess();
gluTessCallback(tess, GLU_TESS_BEGIN, (GLvoid (*) ()) &glBegin);
gluTessCallback(tess, GLU_TESS_END, (GLvoid (*) ()) &glEnd);
gluTessCallback(tess, GLU_TESS_VERTEX, (GLvoid (*) ()) &glVertex3dv);
gluTessProperty(tess, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_ODD);
gluTessNormal(tess, 0, 0, 1);
gluTessBeginPolygon(tess, NULL);
gluTessBeginContour(tess);
GLdouble *vertices = new GLdouble[innerEdges.size() * 3];
for (int i = 0; i < innerEdges.size(); i++) {
vertices[(i * 3) + 0] = innerEdges[i].a.x;
vertices[(i * 3) + 1] = innerEdges[i].a.y;
vertices[(i * 3) + 2] = 0.0;
gluTessVertex(tess, vertices + (i * 3), vertices + (i * 3));
}
gluTessEndContour(tess);
gluTessEndPolygon(tess);
delete [] vertices;
gluDeleteTess(tess);
}
void XMGPolygon::SetCoordArray ( const XMGVector2X* src_arr_coord, XMGTexUnit unit, GLuint src_idx_shape, GLuint src_idx_facet )
{
XMGPolygonImpl* impl = (XMGPolygonImpl *) m_impl;
XMGRenderImpl* impl_parent = (XMGRenderImpl *) XMGRender::m_impl;
XMGTess* data;
XMGShape* shape;
XMGFacet* facet;
GLuint idx_tess;
GLuint idx_shape;
GLuint idx_facet;
GLuint idx_vertex;
GLuint num_shape;
GLuint num_facet;
GLuint num_vertex;
GLuint off_src;
XMGVector2F* farr_coord;
XMGVector2X* xarr_coord;
XMGRender::SetCoordArray ( src_arr_coord, unit, src_idx_shape, src_idx_facet );
if ( impl_parent->m_has_face[ 0 ] == XMG_FALSE && impl_parent->m_has_face[ 1 ] )
{
return;
}
if ( src_idx_facet != XMG_FACET_ALL )
{
shape = impl_parent->m_vec_shape[ src_idx_facet ];
facet = shape->m_vec_facet[ src_idx_facet ];
if ( facet->m_vec_contour.size ( ) == 0 )
{
return;
}
}
off_src = 0;
for ( impl_parent->RangeArray ( src_idx_shape, impl_parent->m_vec_shape.size ( ), idx_shape, num_shape ); idx_shape < num_shape; idx_shape++ )
{
shape = impl_parent->m_vec_shape[ idx_shape ];
for ( impl_parent->RangeArray ( src_idx_facet, shape->m_vec_facet.size ( ), idx_facet, num_facet ); idx_facet < num_facet; idx_facet++ )
{
facet = shape->m_vec_facet[ idx_facet ];
if ( idx_facet < 2 )
{
switch ( impl_parent->m_geo_type )
{
case XMG_GEO_CONE :
case XMG_GEO_CWALL : idx_tess = 1; break;
default : idx_tess = idx_facet; break;
}
if ( impl->m_tess[ idx_tess ] )
{
data = impl->m_data[ idx_tess ][ idx_shape ];
data->Init ( XMG_TESS_COORD );
gluTessBeginPolygon ( impl->m_tess[ idx_tess ], (GLvoid *) data );
gluTessBeginContour ( impl->m_tess[ idx_tess ] );
for ( idx_vertex = 0, num_vertex = shape->m_num_basic; idx_vertex < num_vertex; idx_vertex++ )
{
data->m_arr_vertex[ idx_vertex * 8 + 6 ] = XMG_X2F ( src_arr_coord[ off_src + idx_vertex ].m_x );
data->m_arr_vertex[ idx_vertex * 8 + 7 ] = XMG_X2F ( src_arr_coord[ off_src + idx_vertex ].m_y );
if ( shape->m_idx_hole != 0 && shape->m_idx_hole == idx_vertex )
{
gluNextContour ( impl->m_tess[ idx_tess ], GLU_INTERIOR );
}
gluTessVertex ( impl->m_tess[ idx_tess ], &data->m_arr_vertex[ idx_vertex * 8 ], &data->m_arr_vertex[ idx_vertex * 8 ] );
}
gluTessEndContour ( impl->m_tess[ idx_tess ] );
gluTessEndPolygon ( impl->m_tess[ idx_tess ] );
if ( impl_parent->m_type_coords[ unit ] == XMG_TYPE_FLOAT )
{
XMGAssert ( farr_coord = (XMGVector2F *) kdMalloc ( sizeof ( XMGVector2F ) * facet->m_num_ext ) );
for ( idx_vertex = 0, num_vertex = facet->m_num_ext; idx_vertex < num_vertex; idx_vertex++ )
{
farr_coord[ idx_vertex ] = data->m_vec_coord[ idx_vertex ];
}
impl_parent->SetBuffer ( impl_parent->m_id_coords[ unit ], farr_coord, sizeof ( XMGVector2F ) * facet->m_off_ext, sizeof ( XMGVector2F ) * facet->m_num_ext );
kdFree ( farr_coord );
}
else
{
XMGAssert ( xarr_coord = (XMGVector2X *) kdMalloc ( sizeof ( XMGVector2X ) * facet->m_num_ext ) );
for ( idx_vertex = 0, num_vertex = facet->m_num_ext; idx_vertex < num_vertex; idx_vertex++ )
{
xarr_coord[ idx_vertex ] = data->m_vec_coord[ idx_vertex ];
}
impl_parent->SetBuffer ( impl_parent->m_id_coords[ unit ], xarr_coord, sizeof ( XMGVector2X ) * facet->m_off_ext, sizeof ( XMGVector2X ) * facet->m_num_ext );
kdFree ( xarr_coord );
}
}
}
off_src += facet->m_num_vertex;
}
}
}
void XMGPolygon::SetVertexArray ( const XMGVector3X* src_arr_vertex, const GLuint* arr_idx_hole )
{
XMGPolygonImpl* impl = (XMGPolygonImpl *) m_impl;
XMGRenderImpl* impl_parent = (XMGRenderImpl *) XMGRender::m_impl;
XMGTess* data[2];
XMGShape* shape;
XMGFacet* facet;
XMGContour* contour;
GLuint idx_tess;
GLuint idx_shape;
GLuint idx_facet;
GLuint idx_vertex;
GLuint idx_vec;
GLuint num_shape;
GLuint num_vertex;
GLuint num_vec;
GLuint off_vertex;
GLuint off_ext;
XMGVector3X src_vertex;
XMGVector3X* arr_vertex;
off_vertex = 0;
off_ext = impl_parent->m_num_vertex;
impl_parent->m_ext_vertex = 0;
for ( idx_shape = 0, num_shape = impl_parent->m_vec_shape.size ( ); idx_shape < num_shape; idx_shape++ )
{
shape = impl_parent->m_vec_shape[ idx_shape ];
shape->m_idx_hole = arr_idx_hole ? arr_idx_hole[ idx_shape ] : XMG_HOLE_NULL;
// Set tess vertices
if ( impl->m_tess[ 0 ] || impl->m_tess[ 1 ] )
{
for ( idx_tess = 0; idx_tess < 2; idx_tess++ )
{
if ( impl->m_tess[ idx_tess ] )
{
data[ idx_tess ] = impl->m_data[ idx_tess ][ idx_shape ];
data[ idx_tess ]->Init ( XMG_TESS_VERTEX );
gluTessBeginPolygon ( impl->m_tess[ idx_tess ], (GLvoid *) data[ idx_tess ] );
gluTessBeginContour ( impl->m_tess[ idx_tess ] );
}
}
for ( idx_vertex = 0, num_vertex = shape->m_num_basic; idx_vertex < num_vertex; idx_vertex++ )
{
for ( idx_tess = 0; idx_tess < 2; idx_tess++ )
{
if ( idx_tess == 0 )
{
if ( impl->m_tess[ idx_tess ] )
{
src_vertex = src_arr_vertex[ off_vertex + idx_vertex ];
}
else
{
continue;
}
}
else if ( idx_tess == 1 )
{
if ( impl->m_tess[ idx_tess ] )
{
switch ( impl_parent->m_geo_type )
{
case XMG_GEO_SOLID :
src_vertex = src_arr_vertex[ off_vertex + num_vertex + idx_vertex ];
break;
case XMG_GEO_BSOLID :
if ( shape->m_idx_hole )
{
src_vertex = src_arr_vertex[ idx_vertex < shape->m_idx_hole ? shape->m_idx_hole - idx_vertex - 1 : num_vertex + shape->m_idx_hole - idx_vertex - 1 ];
}
else
{
src_vertex = src_arr_vertex[ num_vertex - idx_vertex - 1 ];
}
src_vertex.m_z = 0;
break;
}
}
else
{
continue;
}
}
data[ idx_tess ]->m_arr_vertex[ idx_vertex * 8 + 0 ] = XMG_X2F ( src_vertex.m_x );
data[ idx_tess ]->m_arr_vertex[ idx_vertex * 8 + 1 ] = XMG_X2F ( src_vertex.m_y );
data[ idx_tess ]->m_arr_vertex[ idx_vertex * 8 + 2 ] = XMG_X2F ( src_vertex.m_z );
if ( shape->m_idx_hole != 0 && shape->m_idx_hole == idx_vertex )
{
gluNextContour ( impl->m_tess[ idx_tess ], GLU_INTERIOR );
}
gluTessVertex ( impl->m_tess[ idx_tess ], &data[ idx_tess ]->m_arr_vertex[ idx_vertex * 8 ], &data[ idx_tess ]->m_arr_vertex[ idx_vertex * 8 ] );
}
}
idx_facet = 0;
for ( idx_tess = 0; idx_tess < 2; idx_tess++ )
{
if ( impl->m_tess[ idx_tess ] )
{
gluTessEndContour ( impl->m_tess[ idx_tess ] );
gluTessEndPolygon ( impl->m_tess[ idx_tess ] );
// Set contours with original
facet = shape->m_vec_facet[ idx_facet ];
facet->ClearContour ( );
if ( shape->m_idx_hole == XMG_HOLE_NULL )
{
XMGAssert ( contour = new XMGContour ( ) );
contour->m_draw_limit = XMG_LIMIT_LINE;
contour->m_off_vertex = facet->m_off_vertex;
contour->m_num_vertex = facet->m_num_vertex;
facet->m_vec_contour.push_back ( contour );
}
else
{
XMGAssert ( contour = new XMGContour ( ) );
contour->m_draw_limit = XMG_LIMIT_LINE;
contour->m_off_vertex = facet->m_off_vertex;
contour->m_num_vertex = shape->m_idx_hole;
facet->m_vec_contour.push_back ( contour );
XMGAssert ( contour = new XMGContour ( ) );
contour->m_draw_limit = XMG_LIMIT_LINE;
contour->m_off_vertex = facet->m_off_vertex + shape->m_idx_hole;
contour->m_num_vertex = facet->m_num_vertex - shape->m_idx_hole;
facet->m_vec_contour.push_back ( contour );
}
// Set contours with tessed
facet->m_off_ext = off_ext;
for ( idx_vec = 0, num_vec = data[ idx_tess ]->m_vec_num_vertex.size ( ); idx_vec < num_vec; idx_vec++ )
{
XMGAssert ( contour = new XMGContour ( ) );
contour->m_draw_limit = XMG_LIMIT_TRI;
contour->m_disp_mode = data[ idx_tess ]->m_vec_mode[ idx_vec ];
contour->m_off_vertex = off_ext;
contour->m_num_vertex = data[ idx_tess ]->m_vec_num_vertex[ idx_vec ];
facet->m_vec_contour.push_back ( contour );
off_ext += contour->m_num_vertex;
}
idx_facet++;
facet->m_num_ext = data[ idx_tess ]->m_vec_vertex.size ( );
impl_parent->m_ext_vertex += facet->m_num_ext;
}
}
}
off_vertex += shape->m_num_input;
}
XMGRender::SetVertexArray ( src_arr_vertex, XMG_SHAPE_ALL );
if ( impl->m_tess[ 0 ] || impl->m_tess[ 1 ] )
{
off_vertex = 0;
num_vertex = impl_parent->m_ext_vertex;
XMGAssert ( arr_vertex = (XMGVector3X *) kdMalloc ( sizeof ( XMGVector3X ) * num_vertex ) );
for ( idx_shape = 0, num_shape = impl_parent->m_vec_shape.size ( ); idx_shape < num_shape; idx_shape++ )
{
for ( idx_tess = 0; idx_tess < 2; idx_tess++ )
{
if ( impl->m_tess[ idx_tess ] )
{
data[ idx_tess ] = impl->m_data[ idx_tess ][ idx_shape ];
for ( idx_vertex = 0, num_vertex = data[ idx_tess ]->m_vec_vertex.size ( ); idx_vertex < num_vertex; idx_vertex++ )
{
arr_vertex[ off_vertex ] = data[ idx_tess ]->m_vec_vertex[ idx_vertex ];
off_vertex++;
}
data[ idx_tess ]->ClearVector ( );
}
}
}
impl_parent->SetBuffer ( impl_parent->m_id_vertex, arr_vertex, sizeof ( XMGVector3X ) * impl_parent->m_num_vertex, sizeof ( XMGVector3X ) * impl_parent->m_ext_vertex );
kdFree ( arr_vertex );
}
}
void init (void)
{
GLUtesselator *tobj;
GLdouble rect[4][3] = {50.0, 50.0, 0.0,
200.0, 50.0, 0.0,
200.0, 200.0, 0.0,
50.0, 200.0, 0.0};
GLdouble tri[3][3] = {75.0, 75.0, 0.0,
125.0, 175.0, 0.0,
175.0, 75.0, 0.0};
GLdouble star[5][6] = {250.0, 50.0, 0.0, 1.0, 0.0, 1.0,
325.0, 200.0, 0.0, 1.0, 1.0, 0.0,
400.0, 50.0, 0.0, 0.0, 1.0, 1.0,
250.0, 150.0, 0.0, 1.0, 0.0, 0.0,
400.0, 150.0, 0.0, 0.0, 1.0, 0.0};
glClearColor(0.0, 0.0, 0.0, 0.0);
startList = glGenLists(2);
tobj = gluNewTess();
gluTessCallback(tobj, GLU_TESS_VERTEX,
glVertex3dv);
gluTessCallback(tobj, GLU_TESS_BEGIN,
beginCallback);
gluTessCallback(tobj, GLU_TESS_END,
endCallback);
gluTessCallback(tobj, GLU_TESS_ERROR,
errorCallback);
/* rectangle with triangular hole inside */
glNewList(startList, GL_COMPILE);
glShadeModel(GL_FLAT);
gluTessBeginPolygon(tobj, NULL);
gluTessBeginContour(tobj);
gluTessVertex(tobj, rect[0], rect[0]);
gluTessVertex(tobj, rect[1], rect[1]);
gluTessVertex(tobj, rect[2], rect[2]);
gluTessVertex(tobj, rect[3], rect[3]);
gluTessEndContour(tobj);
gluTessBeginContour(tobj);
gluTessVertex(tobj, tri[0], tri[0]);
gluTessVertex(tobj, tri[1], tri[1]);
gluTessVertex(tobj, tri[2], tri[2]);
gluTessEndContour(tobj);
gluTessEndPolygon(tobj);
glEndList();
gluTessCallback(tobj, GLU_TESS_VERTEX,
vertexCallback);
gluTessCallback(tobj, GLU_TESS_BEGIN,
beginCallback);
gluTessCallback(tobj, GLU_TESS_END,
endCallback);
gluTessCallback(tobj, GLU_TESS_ERROR,
errorCallback);
gluTessCallback(tobj, GLU_TESS_COMBINE,
combineCallback);
/* smooth shaded, self-intersecting star */
glNewList(startList + 1, GL_COMPILE);
glShadeModel(GL_SMOOTH);
gluTessProperty(tobj, GLU_TESS_WINDING_RULE,
GLU_TESS_WINDING_POSITIVE);
gluTessBeginPolygon(tobj, NULL);
gluTessBeginContour(tobj);
gluTessVertex(tobj, star[0], star[0]);
gluTessVertex(tobj, star[1], star[1]);
gluTessVertex(tobj, star[2], star[2]);
gluTessVertex(tobj, star[3], star[3]);
gluTessVertex(tobj, star[4], star[4]);
gluTessEndContour(tobj);
gluTessEndPolygon(tobj);
glEndList();
gluDeleteTess(tobj);
}
void MapPainterOpenGL::DrawArea(const Projection& projection,
const MapParameter& /*parameter*/,
const MapPainter::AreaData& area)
{
if (area.fillStyle->GetFillColor().IsVisible()) {
glColor4d(area.fillStyle->GetFillColor().GetR(),
area.fillStyle->GetFillColor().GetG(),
area.fillStyle->GetFillColor().GetB(),
area.fillStyle->GetFillColor().GetA());
gluTessProperty(tesselator,
GLU_TESS_BOUNDARY_ONLY,
GL_FALSE);
gluTessBeginPolygon(tesselator,
NULL);
gluTessBeginContour(tesselator);
for (size_t i=area.transStart; i<=area.transEnd; i++) {
gluTessVertex(tesselator,
(GLdouble*)&coordBuffer->buffer[i],
(GLdouble*)&coordBuffer->buffer[i]);
}
gluTessEndContour(tesselator);
if (!area.clippings.empty()) {
// Clip areas within the area by using CAIRO_FILL_RULE_EVEN_ODD
for (std::list<PolyData>::const_iterator c=area.clippings.begin();
c!=area.clippings.end();
c++) {
const PolyData& data=*c;
gluTessBeginContour(tesselator);
for (size_t i=data.transStart; i<=data.transEnd; i++) {
gluTessVertex(tesselator,
(GLdouble*)&coordBuffer->buffer[i],
(GLdouble*)&coordBuffer->buffer[i]);
}
gluTessEndContour(tesselator);
}
}
gluTessEndPolygon(tesselator);
}
if (area.fillStyle->GetBorderWidth()>0 &&
area.fillStyle->GetBorderColor().IsVisible()) {
double borderWidth=projection.ConvertWidthToPixel(area.fillStyle->GetBorderWidth());
glColor4d(area.fillStyle->GetBorderColor().GetR(),
area.fillStyle->GetBorderColor().GetG(),
area.fillStyle->GetBorderColor().GetB(),
area.fillStyle->GetBorderColor().GetA());
glLineWidth(borderWidth);
glBegin(GL_LINE_LOOP);
for (size_t i=area.transStart; i<=area.transEnd; i++) {
glVertex3d(coordBuffer->buffer[i].GetX(),
coordBuffer->buffer[i].GetY(),
0.0);
}
glEnd();
}
}
int PolyTessGeo::BuildTessGL(void)
{
#ifdef ocpnUSE_GL
int iir, ip;
int *cntr;
GLdouble *geoPt;
wxString sout;
wxString sout1;
wxString stemp;
#ifdef __WXMSW__
// If using the OpenGL dlls provided with Windows,
// load the dll and establish addresses of the entry points needed
#ifdef USE_GLU_DLL
if(!s_glu_dll_ready)
{
s_hGLU_DLL = LoadLibrary("glu32.dll");
if (s_hGLU_DLL != NULL)
{
s_lpfnTessProperty = (LPFNDLLTESSPROPERTY)GetProcAddress(s_hGLU_DLL,"gluTessProperty");
s_lpfnNewTess = (LPFNDLLNEWTESS)GetProcAddress(s_hGLU_DLL, "gluNewTess");
s_lpfnTessBeginContour = (LPFNDLLTESSBEGINCONTOUR)GetProcAddress(s_hGLU_DLL, "gluTessBeginContour");
s_lpfnTessEndContour = (LPFNDLLTESSENDCONTOUR)GetProcAddress(s_hGLU_DLL, "gluTessEndContour");
s_lpfnTessBeginPolygon = (LPFNDLLTESSBEGINPOLYGON)GetProcAddress(s_hGLU_DLL, "gluTessBeginPolygon");
s_lpfnTessEndPolygon = (LPFNDLLTESSENDPOLYGON)GetProcAddress(s_hGLU_DLL, "gluTessEndPolygon");
s_lpfnDeleteTess = (LPFNDLLDELETETESS)GetProcAddress(s_hGLU_DLL, "gluDeleteTess");
s_lpfnTessVertex = (LPFNDLLTESSVERTEX)GetProcAddress(s_hGLU_DLL, "gluTessVertex");
s_lpfnTessCallback = (LPFNDLLTESSCALLBACK)GetProcAddress(s_hGLU_DLL, "gluTessCallback");
s_glu_dll_ready = true;
}
else
{
return ERROR_NO_DLL;
}
}
#endif
#endif
// Allocate a work buffer, which will be grown as needed
#define NINIT_BUFFER_LEN 10000
s_pwork_buf = (GLdouble *)malloc(NINIT_BUFFER_LEN * 2 * sizeof(GLdouble));
s_buf_len = NINIT_BUFFER_LEN * 2;
s_buf_idx = 0;
// Create an array to hold pointers to allocated vertices created by "combine" callback,
// so that they may be deleted after tesselation.
s_pCombineVertexArray = new wxArrayPtrVoid;
// Create tesselator
GLUtessobj = gluNewTess();
// Register the callbacks
gluTessCallback(GLUtessobj, GLU_TESS_BEGIN, (GLvoid (__CALL_CONVENTION *) ())&beginCallback);
gluTessCallback(GLUtessobj, GLU_TESS_BEGIN, (GLvoid (__CALL_CONVENTION *) ())&beginCallback);
gluTessCallback(GLUtessobj, GLU_TESS_VERTEX, (GLvoid (__CALL_CONVENTION *) ())&vertexCallback);
gluTessCallback(GLUtessobj, GLU_TESS_END, (GLvoid (__CALL_CONVENTION *) ())&endCallback);
gluTessCallback(GLUtessobj, GLU_TESS_COMBINE, (GLvoid (__CALL_CONVENTION *) ())&combineCallback);
// gluTessCallback(GLUtessobj, GLU_TESS_ERROR, (GLvoid (__CALL_CONVENTION *) ())&errorCallback);
// glShadeModel(GL_SMOOTH);
gluTessProperty(GLUtessobj, GLU_TESS_WINDING_RULE,
GLU_TESS_WINDING_POSITIVE );
// gluTess algorithm internally selects vertically oriented triangle strips and fans.
// This orientation is not optimal for conventional memory-mapped raster display shape filling.
// We can "fool" the algorithm by interchanging the x and y vertex values passed to gluTessVertex
// and then reverting x and y on the resulting vertexCallbacks.
// In this implementation, we will explicitely set the preferred orientation.
//Set the preferred orientation
tess_orient = TESS_HORZ; // prefer horizontal tristrips
// Get total number of contours
m_ncnt = m_pxgeom->n_contours;
// Allocate cntr array
cntr = (int *)malloc(m_ncnt * sizeof(int));
// Get total number of points(vertices)
int npta = m_pxgeom->contour_array[0];
cntr[0] = npta;
npta += 2; // fluff
for( iir=0 ; iir < m_ncnt-1 ; iir++)
{
int nptr = m_pxgeom->contour_array[iir+1];
cntr[iir+1] = nptr;
npta += nptr + 2; // fluff
}
// printf("xgeom npta: %d\n", npta);
geoPt = (GLdouble *)malloc((npta) * 3 * sizeof(GLdouble)); // vertex array
// Grow the work buffer if necessary
if((npta * 4) > s_buf_len)
{
s_pwork_buf = (GLdouble *)realloc(s_pwork_buf, npta * 4 * sizeof(GLdouble));
s_buf_len = npta * 4;
}
// Define the polygon
gluTessBeginPolygon(GLUtessobj, NULL);
// Create input structures
// Exterior Ring
int npte = m_pxgeom->contour_array[0];
cntr[0] = npte;
GLdouble *ppt = geoPt;
// Check and account for winding direction of ring
bool cw = true;
double x0, y0, x, y;
OGRPoint p;
wxPoint2DDouble *pp = m_pxgeom->vertex_array;
pp++; // skip 0?
if(cw)
{
// poly->getExteriorRing()->getPoint(0, &p);
x0 = pp->m_x;
y0 = pp->m_y;
}
else
{
// poly->getExteriorRing()->getPoint(npte-1, &p);
x0 = pp[npte-1].m_x;
y0 = pp[npte-1].m_y;
// x0 = p.getX();
// y0 = p.getY();
}
// pp++;
gluTessBeginContour(GLUtessobj);
// Transcribe points to vertex array, in proper order with no duplicates
// also, accounting for tess_orient
for(ip = 0 ; ip < npte ; ip++)
{
int pidx;
if(cw)
pidx = npte - ip - 1;
else
pidx = ip;
// poly->getExteriorRing()->getPoint(pidx, &p);
x = pp[pidx].m_x;
y = pp[pidx].m_y;
// pp++;
if((fabs(x-x0) > EQUAL_EPS) || (fabs(y-y0) > EQUAL_EPS))
{
GLdouble *ppt_temp = ppt;
if(tess_orient == TESS_VERT)
{
*ppt++ = x;
*ppt++ = y;
}
else
{
*ppt++ = y;
*ppt++ = x;
}
*ppt++ = 0.0;
gluTessVertex( GLUtessobj, ppt_temp, ppt_temp ) ;
//printf("tess from xgeom, external vertex %g %g\n", x, y);
}
else
cntr[0]--;
x0 = x;
y0 = y;
}
gluTessEndContour(GLUtessobj);
int index_offset = npte;
#if 1
// Now the interior contours
for(iir=0; iir < m_ncnt-1; iir++)
{
gluTessBeginContour(GLUtessobj);
// int npti = cntr[iir];
int npti = m_pxgeom->contour_array[iir+1];
// Check and account for winding direction of ring
bool cw = false; //!(poly->getInteriorRing(iir)->isClockwise() == 0);
if(!cw)
{
x0 = pp[index_offset].m_x;
y0 = pp[index_offset].m_y;
}
else
{
x0 = pp[index_offset + npti-1].m_x;
y0 = pp[index_offset + npti-1].m_y;
}
// Transcribe points to vertex array, in proper order with no duplicates
// also, accounting for tess_orient
for(int ip = 0 ; ip < npti ; ip++)
{
OGRPoint p;
int pidx;
if(!cw) // interior contours must be cw
pidx = npti - ip - 1;
else
pidx = ip;
x = pp[pidx + index_offset].m_x;
y = pp[pidx + index_offset].m_y;
if((fabs(x-x0) > EQUAL_EPS) || (fabs(y-y0) > EQUAL_EPS))
{
GLdouble *ppt_temp = ppt;
if(tess_orient == TESS_VERT)
{
*ppt++ = x;
*ppt++ = y;
}
else
{
*ppt++ = y;
*ppt++ = x;
}
*ppt++ = 0.0;
gluTessVertex( GLUtessobj, ppt_temp, ppt_temp ) ;
// printf("tess from xgeom, internal vertex %d %g %g\n", ip, x, y);
}
else
cntr[iir+1]--;
x0 = x;
y0 = y;
}
gluTessEndContour(GLUtessobj);
index_offset += npti;
}
#endif
// Store some SM conversion data in static store,
// for callback access
s_bSENC_SM = false;
s_bmerc_transform = true;
s_transform_x_rate = m_pxgeom->x_rate;
s_transform_x_origin = m_pxgeom->x_offset;
s_transform_y_rate = m_pxgeom->y_rate;
s_transform_y_origin = m_pxgeom->y_offset;
// Ready to kick off the tesselator
s_pTPG_Last = NULL;
s_pTPG_Head = NULL;
s_nvmax = 0;
gluTessEndPolygon(GLUtessobj); // here it goes
m_nvertex_max = s_nvmax; // record largest vertex count, updates in callback
// Tesselation all done, so...
// Create the data structures
m_ppg_head = new PolyTriGroup;
m_ppg_head->m_bSMSENC = s_bSENC_SM;
m_ppg_head->nContours = m_ncnt;
m_ppg_head->pn_vertex = cntr; // pointer to array of poly vertex counts
m_ppg_head->data_type = DATA_TYPE_DOUBLE;
// Transcribe the raw geometry buffer
// Converting to float as we go, and
// allowing for tess_orient
// Also, convert to SM if requested
int nptfinal = npta;
// No longer need the full geometry in the SENC,
nptfinal = 1;
m_nwkb = (nptfinal +1) * 2 * sizeof(float);
m_ppg_head->pgroup_geom = (float *)malloc(m_nwkb);
float *vro = m_ppg_head->pgroup_geom;
ppt = geoPt;
float tx,ty;
for(ip = 0 ; ip < nptfinal ; ip++)
{
if(TESS_HORZ == tess_orient)
{
ty = *ppt++;
tx = *ppt++;
}
else
{
tx = *ppt++;
ty = *ppt++;
}
if(0/*bSENC_SM*/)
{
// Calculate SM from chart common reference point
double easting, northing;
// toSM(ty, tx, ref_lat, ref_lon, &easting, &northing);
*vro++ = easting; // x
*vro++ = northing; // y
}
else
{
*vro++ = tx; // lon
*vro++ = ty; // lat
}
ppt++; // skip z
}
m_ppg_head->tri_prim_head = s_pTPG_Head; // head of linked list of TriPrims
// Convert the Triangle vertex arrays into a single memory allocation of floats
// to reduce SENC size and enable efficient access later
// First calculate the total byte size
int total_byte_size = 2 * sizeof(float);
TriPrim *p_tp = m_ppg_head->tri_prim_head;
while( p_tp ) {
total_byte_size += p_tp->nVert * 2 * sizeof(float);
p_tp = p_tp->p_next; // pick up the next in chain
}
float *vbuf = (float *)malloc(total_byte_size);
p_tp = m_ppg_head->tri_prim_head;
float *p_run = vbuf;
while( p_tp ) {
float *pfbuf = p_run;
GLdouble *pdouble_buf = (GLdouble *)p_tp->p_vertex;
for( int i=0 ; i < p_tp->nVert * 2 ; ++i){
float x = (float)( *((GLdouble *)pdouble_buf) );
*p_run++ = x;
pdouble_buf++;
}
free(p_tp->p_vertex);
p_tp->p_vertex = (double *)pfbuf;
p_tp = p_tp->p_next; // pick up the next in chain
}
m_ppg_head->bsingle_alloc = true;
m_ppg_head->single_buffer = (unsigned char *)vbuf;
m_ppg_head->single_buffer_size = total_byte_size;
m_ppg_head->data_type = DATA_TYPE_FLOAT;
gluDeleteTess(GLUtessobj);
free( s_pwork_buf );
s_pwork_buf = NULL;
free (geoPt);
// All allocated buffers are owned now by the m_ppg_head
// And will be freed on dtor of this object
delete m_pxgeom;
// Free up any "Combine" vertices created
for(unsigned int i = 0; i < s_pCombineVertexArray->GetCount() ; i++)
free (s_pCombineVertexArray->Item(i));
delete s_pCombineVertexArray;
m_pxgeom = NULL;
m_bOK = true;
#endif //#ifdef ocpnUSE_GL
return 0;
}
void REGALGLU_CALL
gluBeginPolygon( GLUtesselator *tess )
{
gluTessBeginPolygon( tess, NULL );
gluTessBeginContour( tess );
}
void GLAPIENTRY
gluBeginPolygon( GLUtesselator *tess )
{
gluTessBeginPolygon( tess, NULL );
gluTessBeginContour( tess );
}
void tesselateComplexPolygon(Array<Vector3>& input, Array<Triangle>& output) {
// Use the GLU triangulator to do the hard work.
static GLUtriangulatorObj* tobj = NULL;
if (tobj == NULL) {
tobj = gluNewTess();
#if defined(G3D_OSX)
#define CAST(x) reinterpret_cast<void (*)(...)>(x)
#elif defined(G3D_LINUX)
#define CAST(x) reinterpret_cast<void (*)()>(x)
#else
#define CAST(x) reinterpret_cast<void (__stdcall *)(void)>(x)
#endif
gluTessCallback(tobj, GLU_TESS_BEGIN_DATA, CAST(_tesselateBegin));
gluTessCallback(tobj, GLU_TESS_VERTEX_DATA, CAST(_tesselateVertex));
gluTessCallback(tobj, GLU_TESS_END_DATA, CAST(_tesselateEnd));
gluTessCallback(tobj, GLU_TESS_COMBINE_DATA, CAST(_tesselateCombine));
gluTessCallback(tobj, GLU_TESS_ERROR, CAST(_tesselateError));
gluTessProperty(tobj, GLU_TESS_BOUNDARY_ONLY, GL_FALSE);
gluTessProperty(tobj, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_ODD);
#undef CAST
}
double v[3];
int i;
TessData data;
gluTessBeginPolygon(tobj, &data);
gluTessBeginContour(tobj);
for (i = 0; i < input.size(); ++i) {
// Expand the input to double precision
v[0] = input[i].x;
v[1] = input[i].y;
v[2] = input[i].z;
gluTessVertex(tobj, v, &(input[i]));
}
gluTessEndContour(tobj);
gluTessEndPolygon(tobj);
for (int p = 0; p < data.primitive.size(); ++p) {
const TessData::Primitive& primitive = data.primitive[p];
// Turn the tesselated primitive into triangles
switch (primitive.primitiveType) {
case GL_TRIANGLES:
// This is easy, just walk through them in order.
for (i = 0; i < primitive.vertex.size(); i += 3) {
output.append(Triangle(primitive.vertex[i], primitive.vertex[i + 1], primitive.vertex[i + 2]));
}
break;
case GL_TRIANGLE_FAN:
{
// Make a triangle between every pair of vertices and the 1st vertex
for (i = 1; i < primitive.vertex.size() - 1; ++i) {
output.append(Triangle(primitive.vertex[0], primitive.vertex[i], primitive.vertex[i + 1]));
}
}
break;
case GL_TRIANGLE_STRIP:
for (i = 0; i < primitive.vertex.size() - 3; i += 2) {
output.append(Triangle(primitive.vertex[i], primitive.vertex[i + 1], primitive.vertex[i + 2]));
output.append(Triangle(primitive.vertex[i + 2], primitive.vertex[i + 1], primitive.vertex[i + 3]));
}
if (i < primitive.vertex.size() - 2) {
output.append(Triangle(primitive.vertex[i], primitive.vertex[i + 1], primitive.vertex[i + 2]));
}
break;
default:
//debugAssertM(false, GLenumToString(primitive.primitiveType));
// Ignore other primitives
;
}
}
}
static void
_cogl_path_build_fill_attribute_buffer (CoglPath *path)
{
CoglPathTesselator tess;
unsigned int path_start = 0;
CoglPathData *data = path->data;
int i;
/* If we've already got a vbo then we don't need to do anything */
if (data->fill_attribute_buffer)
return;
tess.primitive_type = FALSE;
/* Generate a vertex for each point on the path */
tess.vertices = g_array_new (FALSE, FALSE, sizeof (CoglPathTesselatorVertex));
g_array_set_size (tess.vertices, data->path_nodes->len);
for (i = 0; i < data->path_nodes->len; i++)
{
CoglPathNode *node =
&g_array_index (data->path_nodes, CoglPathNode, i);
CoglPathTesselatorVertex *vertex =
&g_array_index (tess.vertices, CoglPathTesselatorVertex, i);
vertex->x = node->x;
vertex->y = node->y;
/* Add texture coordinates so that a texture would be drawn to
fit the bounding box of the path and then cropped by the
path */
if (data->path_nodes_min.x == data->path_nodes_max.x)
vertex->s = 0.0f;
else
vertex->s = ((node->x - data->path_nodes_min.x)
/ (data->path_nodes_max.x - data->path_nodes_min.x));
if (data->path_nodes_min.y == data->path_nodes_max.y)
vertex->t = 0.0f;
else
vertex->t = ((node->y - data->path_nodes_min.y)
/ (data->path_nodes_max.y - data->path_nodes_min.y));
}
tess.indices_type =
_cogl_path_tesselator_get_indices_type_for_size (data->path_nodes->len);
_cogl_path_tesselator_allocate_indices_array (&tess);
tess.glu_tess = gluNewTess ();
if (data->fill_rule == COGL_PATH_FILL_RULE_EVEN_ODD)
gluTessProperty (tess.glu_tess, GLU_TESS_WINDING_RULE,
GLU_TESS_WINDING_ODD);
else
gluTessProperty (tess.glu_tess, GLU_TESS_WINDING_RULE,
GLU_TESS_WINDING_NONZERO);
/* All vertices are on the xy-plane */
gluTessNormal (tess.glu_tess, 0.0, 0.0, 1.0);
gluTessCallback (tess.glu_tess, GLU_TESS_BEGIN_DATA,
_cogl_path_tesselator_begin);
gluTessCallback (tess.glu_tess, GLU_TESS_VERTEX_DATA,
_cogl_path_tesselator_vertex);
gluTessCallback (tess.glu_tess, GLU_TESS_END_DATA,
_cogl_path_tesselator_end);
gluTessCallback (tess.glu_tess, GLU_TESS_COMBINE_DATA,
_cogl_path_tesselator_combine);
gluTessBeginPolygon (tess.glu_tess, &tess);
while (path_start < data->path_nodes->len)
{
CoglPathNode *node =
&g_array_index (data->path_nodes, CoglPathNode, path_start);
gluTessBeginContour (tess.glu_tess);
for (i = 0; i < node->path_size; i++)
{
double vertex[3] = { node[i].x, node[i].y, 0.0 };
gluTessVertex (tess.glu_tess, vertex,
GINT_TO_POINTER (i + path_start));
}
gluTessEndContour (tess.glu_tess);
path_start += node->path_size;
}
gluTessEndPolygon (tess.glu_tess);
gluDeleteTess (tess.glu_tess);
data->fill_attribute_buffer =
cogl_attribute_buffer_new (data->context,
sizeof (CoglPathTesselatorVertex) *
tess.vertices->len,
tess.vertices->data);
g_array_free (tess.vertices, TRUE);
data->fill_attributes[0] =
cogl_attribute_new (data->fill_attribute_buffer,
"cogl_position_in",
sizeof (CoglPathTesselatorVertex),
G_STRUCT_OFFSET (CoglPathTesselatorVertex, x),
2, /* n_components */
COGL_ATTRIBUTE_TYPE_FLOAT);
data->fill_attributes[1] =
cogl_attribute_new (data->fill_attribute_buffer,
"cogl_tex_coord0_in",
sizeof (CoglPathTesselatorVertex),
G_STRUCT_OFFSET (CoglPathTesselatorVertex, s),
2, /* n_components */
COGL_ATTRIBUTE_TYPE_FLOAT);
data->fill_vbo_indices = cogl_indices_new (data->context,
tess.indices_type,
tess.indices->data,
tess.indices->len);
data->fill_vbo_n_indices = tess.indices->len;
g_array_free (tess.indices, TRUE);
}
void FTVectoriser::MakeMesh(FTGL_DOUBLE zNormal, int outsetType, float outsetSize)
{
if(mesh)
{
delete mesh;
}
mesh = new FTMesh;
GLUtesselator* tobj = gluNewTess();
gluTessCallback(tobj, GLU_TESS_BEGIN_DATA, (GLUTesselatorFunction)ftglBegin);
gluTessCallback(tobj, GLU_TESS_VERTEX_DATA, (GLUTesselatorFunction)ftglVertex);
gluTessCallback(tobj, GLU_TESS_COMBINE_DATA, (GLUTesselatorFunction)ftglCombine);
gluTessCallback(tobj, GLU_TESS_END_DATA, (GLUTesselatorFunction)ftglEnd);
gluTessCallback(tobj, GLU_TESS_ERROR_DATA, (GLUTesselatorFunction)ftglError);
if(contourFlag & ft_outline_even_odd_fill) // ft_outline_reverse_fill
{
gluTessProperty(tobj, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_ODD);
}
else
{
gluTessProperty(tobj, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_NONZERO);
}
gluTessProperty(tobj, GLU_TESS_TOLERANCE, 0);
gluTessNormal(tobj, 0.0f, 0.0f, zNormal);
gluTessBeginPolygon(tobj, mesh);
for(size_t c = 0; c < ContourCount(); ++c)
{
/* Build the */
switch(outsetType)
{
case 1 : contourList[c]->buildFrontOutset(outsetSize); break;
case 2 : contourList[c]->buildBackOutset(outsetSize); break;
}
const FTContour* contour = contourList[c];
gluTessBeginContour(tobj);
for(size_t p = 0; p < contour->PointCount(); ++p)
{
const FTGL_DOUBLE* d;
switch(outsetType)
{
case 1: d = contour->FrontPoint(p); break;
case 2: d = contour->BackPoint(p); break;
case 0: default: d = contour->Point(p); break;
}
// XXX: gluTessVertex doesn't modify the data but does not
// specify "const" in its prototype, so we cannot cast to
// a const type.
gluTessVertex(tobj, (GLdouble *)d, (GLvoid *)d);
}
gluTessEndContour(tobj);
}
gluTessEndPolygon(tobj);
gluDeleteTess(tobj);
}
void init_scene(int width, int height)
{
GLubyte* tex;
GLUtesselator* tobj;
GLfloat rect[4][3]={
{50.0f, 50.0f, 0.0f},
{200.0f, 50.0f, 0.0f},
{200.0f, 200.0f, 0.0f},
{50.0f, 200.0f, 0.0f}
};
GLfloat tri[3][3]={
{75.0f, 75.0f, 0.0f},
{125.0f, 175.0f, 0.0f},
{175.0f, 75.0f, 0.0f}
};
GLfloat star[5][6]={
{250.0f, 50.0f, 0.0f, 1.0f, 0.0f, 1.0f},
{325.0f, 200.0f, 0.0f, 1.0f, 1.0f, 0.0f},
{400.0f, 50.0f, 0.0f, 0.0f, 1.0f, 1.0f},
{250.0f, 150.0f, 0.0f, 1.0f, 0.0f, 0.0f},
{400.0f, 150.0f, 0.0f, 0.0f, 1.0f, 0.0f}
};
GLfloat triangle[9][8]={
{450.0f, 50.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f},
{525.0f, 200.0f, 0.0f, 1.0f, 1.0f, 1.0f, 0.5f, 1.0f},
{600.0f, 50.0f, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f},
{500.0f, 50.0f, 0.0f, 0.666f, 0.000f, 0.333f, 0.333f, 0.000f},
{550.0f, 150.0f, 0.0f, 0.666f, 0.666f, 1.000f, 0.666f, 0.666f},
{500.0f, 150.0f, 0.0f, 1.000f, 0.666f, 0.666f, 0.333f, 0.666f},
{550.0f, 50.0f, 0.0f, 0.333f, 0.000f, 0.666f, 0.666f, 0.000f},
{575.0f, 100.0f, 0.0f, 0.333f, 0.333f, 1.000f, 0.825f, 0.333f},
{475.0f, 100.0f, 0.0f, 1.000f, 0.333f, 0.333f, 0.175f, 0.333f}
};
glViewport(0, 0, (GLsizei)width, (GLsizei)height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(0.0f, (GLfloat)width, 0.0f, (GLfloat)height);
glClearColor(0.0, 0.0, 0.0, 0.0);
/* Create new triangulator */
tobj=gluNewTess();
/* Set triangulator's callbacks */
gluTessCallback(tobj, GLU_TESS_VERTEX_DATA, (GLvoid (*)())&vertexCallback);
gluTessCallback(tobj, GLU_TESS_BEGIN_DATA, (GLvoid (*)())&beginCallback);
gluTessCallback(tobj, GLU_TESS_END_DATA, (GLvoid (*)())&endCallback);
gluTessCallback(tobj, GLU_TESS_ERROR, (GLvoid (*)())&errorCallback);
/* reset object */
object1.sequences=0;
/* rectangle with triangular hole inside */
gluTessBeginPolygon(tobj, (void*)&object1);
gluTessBeginContour(tobj);
gluTessVertex(tobj, rect[0], rect[0]);
gluTessVertex(tobj, rect[1], rect[1]);
gluTessVertex(tobj, rect[2], rect[2]);
gluTessVertex(tobj, rect[3], rect[3]);
gluTessEndContour(tobj);
gluTessBeginContour(tobj);
gluTessVertex(tobj, tri[0], tri[0]);
gluTessVertex(tobj, tri[1], tri[1]);
gluTessVertex(tobj, tri[2], tri[2]);
gluTessEndContour(tobj);
gluTessEndPolygon(tobj);
/* Set triangulator's callbacks */
gluTessCallback(tobj, GLU_TESS_VERTEX_DATA, (GLvoid (*)())&vertexColorCallback);
gluTessCallback(tobj, GLU_TESS_BEGIN_DATA, (GLvoid (*)())&beginCallback);
gluTessCallback(tobj, GLU_TESS_END_DATA, (GLvoid (*)())&endCallback);
gluTessCallback(tobj, GLU_TESS_ERROR, (GLvoid (*)())&errorCallback);
gluTessCallback(tobj, GLU_TESS_COMBINE, (GLvoid (*)())&combineColorCallback);
/* reset object */
object2.sequences=0;
/* self-intersecting star */
gluTessProperty(tobj, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_POSITIVE);
gluTessBeginPolygon(tobj, (void*)&object2);
gluTessBeginContour(tobj);
gluTessVertex(tobj, star[0], star[0]);
gluTessVertex(tobj, star[1], star[1]);
gluTessVertex(tobj, star[2], star[2]);
gluTessVertex(tobj, star[3], star[3]);
gluTessVertex(tobj, star[4], star[4]);
gluTessEndContour(tobj);
gluTessEndPolygon(tobj);
/* Set triangulator's callbacks */
gluTessCallback(tobj, GLU_TESS_VERTEX_DATA, (GLvoid (*)())&vertexTexColorCallback);
gluTessCallback(tobj, GLU_TESS_BEGIN_DATA, (GLvoid (*)())&beginCallback);
gluTessCallback(tobj, GLU_TESS_END_DATA, (GLvoid (*)())&endCallback);
gluTessCallback(tobj, GLU_TESS_ERROR, (GLvoid (*)())&errorCallback);
gluTessCallback(tobj, GLU_TESS_COMBINE, (GLvoid (*)())&combineTexColorCallback);
/* reset object */
object3.sequences=0;
/* self-intersecting star */
gluTessProperty(tobj, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_POSITIVE);
gluTessBeginPolygon(tobj, (void*)&object3);
gluTessBeginContour(tobj);
gluTessVertex(tobj, triangle[0], triangle[0]);
gluTessVertex(tobj, triangle[1], triangle[1]);
gluTessVertex(tobj, triangle[2], triangle[2]);
gluTessEndContour(tobj);
gluTessBeginContour(tobj);
gluTessVertex(tobj, triangle[3], triangle[3]);
gluTessVertex(tobj, triangle[4], triangle[4]);
gluTessVertex(tobj, triangle[5], triangle[5]);
gluTessVertex(tobj, triangle[6], triangle[6]);
gluTessVertex(tobj, triangle[7], triangle[7]);
gluTessVertex(tobj, triangle[8], triangle[8]);
gluTessEndContour(tobj);
gluTessEndPolygon(tobj);
/* Destroy triangulator object */
gluDeleteTess(tobj);
/* enable filtering */
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
tex=make_texture(256, 256);
glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, 256, 256, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, tex);
free(tex);
}
void init (void)
{
int i;
GLUtesselator *tobj;
GLdouble rect[4][3] = {50.0, 50.0, 0.0,
200.0, 50.0, 0.0,
200.0, 200.0, 0.0,
50.0, 200.0, 0.0};
GLdouble tri[3][3] = {75.0, 75.0, 0.0,
125.0, 175.0, 0.0,
175.0, 75.0, 0.0};
GLdouble star[5][6] = {250.0, 50.0, 0.0, 1.0, 0.0, 1.0,
325.0, 200.0, 0.0, 1.0, 1.0, 0.0,
400.0, 50.0, 0.0, 0.0, 1.0, 1.0,
250.0, 150.0, 0.0, 1.0, 0.0, 0.0,
400.0, 150.0, 0.0, 0.0, 1.0, 0.0};
glClearColor(0.0, 0.0, 0.0, 0.0);
startList = glGenLists(2);
tobj = gluNewTess();
gluTessCallback(tobj, GLU_TESS_VERTEX,
glVertex3dv);
gluTessCallback(tobj, GLU_TESS_BEGIN,
beginCallback);
gluTessCallback(tobj, GLU_TESS_END,
endCallback);
gluTessCallback(tobj, GLU_TESS_ERROR,
errorCallback);
/* rectangle with triangular hole inside */
glNewList(startList, GL_COMPILE);
glShadeModel(GL_FLAT);
printf("a");
gluTessBeginPolygon(tobj, NULL);
printf("b");
gluTessBeginContour(tobj);
printf("c");
gluTessVertex(tobj, rect[0], rect[0]);
gluTessVertex(tobj, rect[1], rect[1]);
gluTessVertex(tobj, rect[2], rect[2]);
gluTessVertex(tobj, rect[3], rect[3]);
gluTessEndContour(tobj);
printf(" d");
gluTessBeginContour(tobj);
printf("e");
gluTessVertex(tobj, tri[0], tri[0]);
gluTessVertex(tobj, tri[1], tri[1]);
gluTessVertex(tobj, tri[2], tri[2]);
printf("f");
gluTessEndContour(tobj);
printf("g");
gluTessEndPolygon(tobj);
printf(" h");
glEndList();
gluTessCallback(tobj, GLU_TESS_VERTEX,
vertexCallback);
gluTessCallback(tobj, GLU_TESS_BEGIN,
beginCallback);
gluTessCallback(tobj, GLU_TESS_END,
endCallback);
gluTessCallback(tobj, GLU_TESS_ERROR,
errorCallback);
gluTessCallback(tobj, GLU_TESS_COMBINE,
combineCallback);
/* smooth shaded, self-intersecting star */
glNewList(startList + 1, GL_COMPILE);
glShadeModel(GL_SMOOTH);
gluTessProperty(tobj, GLU_TESS_WINDING_RULE,
GLU_TESS_WINDING_POSITIVE);
gluTessBeginPolygon(tobj, NULL);
gluTessBeginContour(tobj);
gluTessVertex(tobj, star[0], star[0]);
gluTessVertex(tobj, star[1], star[1]);
gluTessVertex(tobj, star[2], star[2]);
gluTessVertex(tobj, star[3], star[3]);
gluTessVertex(tobj, star[4], star[4]);
gluTessEndContour(tobj);
gluTessEndPolygon(tobj);
glPushMatrix();
glTranslatef(-100.0, 200.0, 0.0);
glBegin(GL_POLYGON);
for (i=0; i<5; i++) {
glColor3f(star[i][3], star[i][4], star[i][5]);
glVertex3f(star[i][0], star[i][1], star[i][2]);
}
glEnd();
glColor3f(1,1,1);
glBegin(GL_LINE_STRIP);
glVertex3f(100, 100, 0);
glVertex3f(100, -100, 0);
glVertex3f(-100, 0, 0);
glVertex3f(100, 0, 0);
glEnd();
glPopMatrix();
glEndList();
gluDeleteTess(tobj);
}
void GeneralPolygon::render()
{
//http://www.flipcode.com/archives/Polygon_Tessellation_In_OpenGL.shtml
glPushMatrix();
glTranslatef(_position.x, _position.y, 0.0f);
glRotatef(_rotation,0.0f, 0.0f, 1.0f);
glScalef(_size.x, _size.y, 1.0f);
glColor4f( _r, _g, _b, _a);
switch( _renderMode )
{
case RenderMethod::GLU_Tessalation:
{
// first time rendering? then create the GLUTesselate object
if( _gluTesselator == NULL )
{
// helper lambda function that creates a vertex for OpenGL
auto combineTesselate = [&](GLdouble coords[3], GLdouble *data[4], GLfloat weight[4], GLdouble **dataOut ) {GLdouble *vert = _newCombineVertexData(coords[0], coords[1]); *dataOut = vert;};
auto errorTesselate = [] (GLenum errorCode) { std::cerr<< (char *)gluErrorString(errorCode); };
_gluTesselator = gluNewTess();
// defines all the callback to render the polygons
gluTessCallback(_gluTesselator, GLU_TESS_BEGIN, (void (CALLBACK*)()) glBegin );
gluTessCallback(_gluTesselator, GLU_TESS_VERTEX, (void (CALLBACK*)()) glVertex3dv );
gluTessCallback(_gluTesselator, GLU_TESS_END, (void (CALLBACK*)()) glEnd );
gluTessCallback(_gluTesselator, GLU_TESS_COMBINE, (void (CALLBACK*)()) &combineTesselate );
gluTessCallback(_gluTesselator, GLU_TESS_ERROR, (void (CALLBACK*)()) &errorTesselate );
// tells to all polygons that the normal is in +z direction
gluTessNormal(_gluTesselator, 0.0, 0.0, 1.0);
gluTessProperty(_gluTesselator, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_ODD);
gluTessProperty(_gluTesselator, GLU_TESS_BOUNDARY_ONLY, GL_FALSE);
}
gluTessBeginPolygon(_gluTesselator, NULL);
for(unsigned int i = 0; i < _contours.size(); ++i)
{
const Contour& contour = _contours[i];
gluTessBeginContour(_gluTesselator);
for(unsigned int j = 0; j < contour.size(); ++j)
{
GLdouble *vert = _newCombineVertexData((GLdouble)contour[j].x, (GLdouble)contour[j].y);
gluTessVertex(_gluTesselator, vert, vert);
}
gluTessEndContour(_gluTesselator);
}
// here at the TessEnd is where GLU makes its magic and tesselate our stuff
gluTessEndPolygon(_gluTesselator);
_clearCombineVertexData();
}
break;
case RenderMethod::ConvexTessalation:
{
list<TPPLPoly>::iterator it = _optimalConvexTesselation.begin();
while( it != _optimalConvexTesselation.end() )
{
glBegin(GL_POLYGON);// render convex polygon only
TPPLPoly &poly = *it;
for(unsigned int p=0; p < poly.GetNumPoints() ; ++p)
glVertex3f(poly[p].x, poly[p].y, 0);
if( poly.GetNumPoints() > 0 )
glVertex3f(poly[0].x, poly[0].y, 0);
glEnd();
++it;
}
}
break;
default:
std::cerr<<"GeneralPolygon::render -> Render Method set not valid"<<std::endl;
break;
}
glPopMatrix();
}
//----------------------------------------------------------
ofVboMesh ofTessellator::tessellate( const ofPolyline& polyline, bool bIs2D ){
mutex.lock();
clear();
resultMesh = ofVboMesh();
// resultMesh.clear();
// now get the tesselator object up and ready:
GLUtesselator * ofShapeTobj = gluNewTess();
#if defined( TARGET_OSX)
#ifndef MAC_OS_X_VERSION_10_5
#define OF_NEED_GLU_FIX
#endif
#endif
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// MAC - XCODE USERS PLEASE NOTE - some machines will not be able to compile the code below
// if this happens uncomment the "OF_NEED_GLU_FIX" line below and it
// should compile also please post to the forums with the error message, you OS X version,
// Xcode verison and the CPU type - PPC or Intel. Thanks!
// (note: this is known problem based on different version of glu.h, we are working on a fix)
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
//#define OF_NEED_GLU_FIX
#ifdef OF_NEED_GLU_FIX
#define OF_GLU_CALLBACK_HACK (void(CALLBACK*)(...))
#else
#define OF_GLU_CALLBACK_HACK (void(CALLBACK*)())
#endif
gluTessCallback( ofShapeTobj, GLU_TESS_BEGIN, OF_GLU_CALLBACK_HACK &ofTessellator::begin);
gluTessCallback( ofShapeTobj, GLU_TESS_VERTEX, OF_GLU_CALLBACK_HACK &ofTessellator::vertex);
gluTessCallback( ofShapeTobj, GLU_TESS_COMBINE, OF_GLU_CALLBACK_HACK &ofTessellator::combine);
gluTessCallback( ofShapeTobj, GLU_TESS_END, OF_GLU_CALLBACK_HACK &ofTessellator::end);
gluTessCallback( ofShapeTobj, GLU_TESS_ERROR, OF_GLU_CALLBACK_HACK &ofTessellator::error);
gluTessProperty( ofShapeTobj, GLU_TESS_WINDING_RULE, ofGetStyle().polyMode);
if (!ofGetStyle().bFill){
gluTessProperty( ofShapeTobj, GLU_TESS_BOUNDARY_ONLY, true);
} else {
gluTessProperty( ofShapeTobj, GLU_TESS_BOUNDARY_ONLY, false);
}
gluTessProperty( ofShapeTobj, GLU_TESS_TOLERANCE, 0);
/* ------------------------------------------
for 2d, this next call (normal) likely helps speed up ....
quote : The computation of the normal represents about 10% of
the computation time. For example, if all polygons lie in
the x-y plane, you can provide the normal by using the
------------------------------------------- */
if( bIs2D)
gluTessNormal(ofShapeTobj, 0.0, 0.0, 1.0);
gluTessBeginPolygon( ofShapeTobj, NULL);
for ( int i=0; i<polyline.size(); i++ ) {
double* point = new double[3];
point[0] = polyline[i].x;
point[1] = polyline[i].y;
point[2] = polyline[i].z;
ofShapePolyVertexs.push_back(point);
}
gluTessBeginContour( ofShapeTobj );
for (int i=0; i<(int)ofShapePolyVertexs.size(); i++) {
gluTessVertex( ofShapeTobj, ofShapePolyVertexs[i], ofShapePolyVertexs[i]);
}
gluTessEndContour( ofShapeTobj );
// no matter what we did / do, we need to delete the tesselator object
gluTessEndPolygon( ofShapeTobj);
gluDeleteTess( ofShapeTobj);
ofShapeTobj = NULL;
// now clear the vertices on the dynamically allocated data
clear();
mutex.unlock();
return resultMesh;
}
