int OGLWidget::getObjectAtScreenPos(int x, int y)
{
// set up the selection buffer
GLuint buffer[512];
glSelectBuffer(512, buffer);
// Get the viewport values
GLint viewport[4];
glGetIntegerv(GL_VIEWPORT, viewport);
// Go into Selection Mode
glRenderMode(GL_SELECT);
glInitNames(); // Initializes The Name Stack
glPushName(-1); // Push at least one entry
// go to projection matrix and limit the area around the mouse to be 'drawn'
glMatrixMode(GL_PROJECTION);
glPushMatrix(); // Push The Projection Matrix
glLoadIdentity(); // Resets The Matrix
gluPickMatrix((GLdouble) x, (GLdouble) (viewport[3]-y), 1.0f, 1.0f, viewport);
// also set the perspective to ensure the new aspect ratio is correct
gluPerspective(45.0f, (GLfloat) (viewport[2]-viewport[0])/(GLfloat) (viewport[3]-viewport[1]), 0.1f, 1500.0f);
// now paint the objects
glMatrixMode(GL_MODELVIEW);
parentView_->drawNodes();
// switch everything back
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
// check for hits by switching render mode
GLint hits=glRenderMode(GL_RENDER);
// do we have any?
if (hits > 0)
{
// note: selection buffer has 4 values per hit: # of hits at time, min depth, max depth, name
// start by picking the first hit
int choose = buffer[3];
int depth = buffer[1];
// now loop over the rest
for (int loop = 1; loop < hits; loop++)
{
// is this object closer?
if (buffer[loop*4+1] < GLuint(depth))
{
choose = buffer[loop*4+3];
depth = buffer[loop*4+1];
}
}
return choose;
}
return -1;
}
static COMMAND_FUNC( do_slct_obj )
{
int x, y;
const char *s;
GLuint n_names, *ptr;
GLint hits;
GLuint this_hit=0; /* initialize to silence compiler */
GLuint the_hit;
float z1,z2;
float z_this,z_min;
int clickWindowSize = 1;
GLint viewport[4];
GLint i;
GLuint j;
char ret_str[32];
x=(int)HOW_MANY("x location");
y=(int)HOW_MANY("y location");
s=NAMEOF("scene render command");
s=savestr(s);
//glPushMatrix();
glSelectBuffer(MAX_SELECT,selectBuf);
check_gl_error("glSelectBuffer");
glRenderMode(GL_SELECT);
check_gl_error("glRenderMode");
glMatrixMode(GL_PROJECTION);
check_gl_error("glMatrixMode");
glPushMatrix();
check_gl_error("glPushMatrix");
glLoadIdentity();
check_gl_error("glLoadIdentity");
glGetIntegerv(GL_VIEWPORT,viewport);
check_gl_error("glGetIntegerv");
gluPickMatrix(x,viewport[3]-y,
clickWindowSize,clickWindowSize,viewport);
check_gl_error("gluPickMatrix");
// Setup camera.
//drawer.setupCamera(&manager);
//glMatrixMode(GL_MODELVIEW);
glInitNames();
check_gl_error("glInitNames");
glPushName(0);
check_gl_error("glPushName");
//drawer.drawAirspace(&manager, &table);
/* Call the user's draw routine here... */
chew_text(s, "(gl object selection)" );
rls_str(s);
// Restoring the original projection matrix.
glMatrixMode(GL_PROJECTION);
check_gl_error("glMatrixMode GL_PROJECTION");
glPopMatrix();
check_gl_error("glPopMatrix");
glMatrixMode(GL_MODELVIEW);
check_gl_error("glMatrixMode GL_MODELVIEW");
glFlush();
check_gl_error("glFlush");
// Returning to normal rendering mode.
hits = glRenderMode(GL_RENDER);
//printf ("hits = %d\n", hits);
// Red book example.
// When there are multiple objects, the hits are recorded
// in drawing order, we have to check the z values to know
// which is the foreground object.
z_min=100000;
ptr = (GLuint *) selectBuf;
for (i = 0; i < hits; i++) {
n_names = *ptr++;
z1= ((float)*ptr++)/0x7fffffff;
z2= ((float)*ptr++)/0x7fffffff;
if( z1 < z2 ) z_this = z1;
else z_this=z2;
if( z_this < z_min ) z_min=z_this;
for(j=0;j<n_names;j++){
this_hit=*ptr++;
}
// sprintf(ERROR_STRING,"Hit %d, %d from %g to %g, last is %d",
// i,n_names,z1,z2,this_hit);
// advise(ERROR_STRING);
}
the_hit=0;
ptr = (GLuint *) selectBuf;
for (i = 0; i < hits; i++) {
n_names = *ptr++;
z1= ((float)*ptr++)/0x7fffffff;
z2= ((float)*ptr++)/0x7fffffff;
if( z1 < z2 ) z_this = z1;
else z_this=z2;
for(j=0;j<n_names;j++){
this_hit=*ptr++;
}
if( z_this == z_min )
the_hit=this_hit;
}
//sprintf(ERROR_STRING,"front-most hit is %d",the_hit);
//advise(ERROR_STRING);
sprintf(ret_str,"%d",the_hit);
assign_reserved_var("selection_index",ret_str);
//if (hits != 0) {
//manager.advanceTrial(processHits());
//}
//glPopMatrix();
/* Set a variable to indicate what happened */
}
//================================================================
int GLBT_sel_sel (int *sTyp, long *sDbi, int *stat,
int sx, int sy) {
//================================================================
// start GL-selection only for selectors.
// see GL_sel_rect
int hits;
long *ia;
float fz;
GLuint *selectBuf, BUF_SIZ;
// printf("GLBT_sel_sel ============================\n");
// switch to ProjectionMode
glMatrixMode (GL_PROJECTION);
// save active matrix
glPushMatrix ();
// load Defaultmat.
glLoadIdentity ();
//----------------------------------------------------------------
// Init Sel. Buffer (BEFORE switching to select)
selectBuf = (int*)memspc501;
BUF_SIZ = sizeof(memspc501) / sizeof(GLuint);
glSelectBuffer (BUF_SIZ, selectBuf);
// start select
glRenderMode (GL_SELECT);
GL_mode_draw_select = GR_MODE_2DSELECT;
// Init NameStack.
glInitNames();
glPushName((GLuint)0); // Muss sein. Damit ein Name am Stack ist,
// define pick-window (rectangle 5x5 pixels)
// - changes active (PROJECTION)-matrix !
gluPickMatrix ((double)sx, (double)sy, 5., 5., GL_Viewp);
//----------------------------------------------------------------
// redraw all objs to be picked / selectors, buttons
// set glOrtho - 2D, GLBT_ori
GLBT_view__ ();
// fz = GL_Scr_Siz_X * 10.f;
// glOrtho (0.f, (float)GL_Scr_Siz_X, 0.f, (float)GL_Scr_Siz_Y, -fz, fz);
// UT3D_pt_3db (&GLBT_ori, GL_Scr_Siz_X - GLBT_POS_ORI, GLBT_POS_ORI, 0.);
// redraw
if(GLBT_vcSelStat >= 0) GLBT_disp_vc ();
if(GLBT_plnSelStat >= 0) GLBT_disp_Pln ();
if(I2D_iNr > 0) GLBT_but_disp ();
// close, fill buffer
hits = glRenderMode (GL_RENDER);
// printf(" GLBT-hits=%d\n",hits);
// restore
GL_mode_draw_select = GR_MODE_DRAW;
if(hits < 1) {
if(hits < 0) TX_Print("ERROR: selectbuffer overflow ...");
goto Fertig;
}
//----------------------------------------------------------------
// decode hits, add hits into selectionBuffer
ia = (long*)MEM_alloc_tmp ((int)(hits * sizeof(long)));
GL_sel_hits (ia, selectBuf, hits);
// 1-9 are vectors
if(ia[0] < 10) {
*sTyp = Typ_VC;
// test specialVector GLBT_vcSelStat
if(ia[0] == 7) *sDbi = GLBT_vcSelStat;
else *sDbi = -ia[0]; // stdVector negativ (DB_VCX_IND ..)
goto Fertig;
}
// 11,12,13 = stdPlanes
*sTyp = Typ_PLN;
*sDbi = 10L - ia[0];
//----------------------------------------------------------------
Fertig:
// replace saved matrix
glMatrixMode (GL_PROJECTION);
glPopMatrix ();
// back to normal rendering
glMatrixMode (GL_MODELVIEW);
return 0;
}
void get_3d_object_under_mouse()
{
//ok, first of all, let's see what objects we have in range...
int i, count, x, y, dist1, dist2, hits;
GLint viewport[4];
GLuint *buffer, z_coordinate;
double matrix[16];
selected_3d_object = -1;
x = (int)-camera_x;
y = (int)-camera_y;
count = 0;
for (i = 0; i < MAX_OBJ_3D; i++)
{
if (objects_list[i] && objects_list[i]->blended != 20)
{
dist1 = x - (int)objects_list[i]->x_pos;
dist2 = y - (int)objects_list[i]->y_pos;
if (dist1 * dist1 + dist2 * dist2 <= ((40 * 40) * (zoom_level / 15.75f)))
{
count++;
}
}
}
#ifndef EYE_CANDY
if (count == 0)
{
return;
}
#endif
count++;
count *= 4;
glGetIntegerv(GL_VIEWPORT, viewport);
buffer = malloc(count * sizeof(GLuint));
glSelectBuffer(count, buffer);
glGetDoublev(GL_PROJECTION_MATRIX, matrix);
glRenderMode(GL_SELECT);
glInitNames();
glPushName(0);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
gluPickMatrix(mouse_x, window_height-mouse_y, 1.0, 1.0, viewport);
glMultMatrixd(matrix);
glMatrixMode(GL_MODELVIEW);
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
glEnable(GL_CULL_FACE);
glEnableClientState(GL_VERTEX_ARRAY);
glPushMatrix();
glLoadIdentity(); // Reset The Matrix
Move();
for (i = 0; i < MAX_OBJ_3D; i++)
{
if (objects_list[i] && objects_list[i]->blended != 20)
{
dist1 = x - (int)objects_list[i]->x_pos;
dist2 = y - (int)objects_list[i]->y_pos;
if (dist1 * dist1 + dist2 * dist2 <= ((40 * 40) * (zoom_level / 15.75f)))
{
glLoadName(i);
draw_3d_object(objects_list[i]);
}
}
}
#ifdef EYE_CANDY
if (cur_mode == mode_eye_candy)
{
draw_eye_candy_selectors();
}
#endif
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glDisable(GL_CULL_FACE);
glDisableClientState(GL_VERTEX_ARRAY);
hits = glRenderMode(GL_RENDER);
z_coordinate = 0xFFFFFFFF;
for (i = 0; i < hits; i++)
{
if (buffer[(i * 4) + 1] < z_coordinate)
{
selected_3d_object = buffer[(i*4)+3];
z_coordinate = buffer[(i*4)+1];
}
}
free(buffer);
}
int GLWidget::getObjectID(int x, int y)
{
// This will hold the amount of objects clicked
int objectsFound = 0;
// We need an array to hold our view port coordinates
int viewportCoords[4] = {0};
// This will hold the ID's of the objects we click on.
// We make it an arbitrary number of 32 because openGL also stores other information
// that we don't care about. There is about 4 slots of info for every object ID taken up.
GLuint selectBuffer[32] = {0};
// glSelectBuffer is what we register our selection buffer with. The first parameter
// is the size of our array. The next parameter is the buffer to store the information found.
// More information on the information that will be stored in selectBuffer is further below.
// Setup our selection buffer to accept object ID's
glSelectBuffer(32, selectBuffer);
// This function returns information about many things in OpenGL. We pass in GL_VIEWPORT
// to get the view port coordinates. It saves it like a RECT with {top, left, bottom, right}
// Get the current view port coordinates
glGetIntegerv(GL_VIEWPORT, viewportCoords);
// Now we want to get out of our GL_MODELVIEW matrix and start effecting our
// GL_PROJECTION matrix. This allows us to check our X and Y coords against 3D space.
// We now want to effect our projection matrix
glMatrixMode(GL_PROJECTION);
// We push on a new matrix so we don't effect our 3D projection
glPushMatrix();
// This makes it so it doesn't change the frame buffer if we render into it, instead,
// a record of the names of primitives that would have been drawn if the render mode was
// GL_RENDER are now stored in the selection array (selectBuffer).
// Allows us to render the objects without changing framebuffer
glRenderMode(GL_SELECT);
// Reset our projection matrix
glLoadIdentity();
// gluPickMatrix allows us to create a projection matrix that is around our
// cursor. This basically only allows rendering in the region that we specify.
// If an object is rendered into that region, then it saves that objects ID for us (The magic).
// The first 2 parameters are the X and Y position to start from, then the next 2
// are the width and height of the region from the starting point. The last parameter is
// of course our view port coordinates. You will notice we subtract "y" from the
// BOTTOM view port coordinate. We do this to flip the Y coordinates around. The 0 y
// coordinate starts from the bottom, which is opposite to window's coordinates.
// We also give a 2 by 2 region to look for an object in. This can be changed to preference.
gluPickMatrix(x, viewportCoords[3] - y, 2, 2, viewportCoords);
// Next, we just call our normal gluPerspective() function, exactly as we did on startup.
// This is to multiply the perspective matrix by the pick matrix we created up above.
//Perspective view or Orthogonal View. Multiply by current projection matrix
if(m_bPerspective)
{
GLfloat fov = 60.0f;
gluPerspective(fov, (GLdouble)width()/height(), 1, 3000);
}
else
glOrtho(-1.0, +1.0, -1.0, 1.0, -1.0, 1.0);
// Go back into our model view matrix
glMatrixMode(GL_MODELVIEW);
m_cylinder.drawCurveControlPoints(true);
// If we return to our normal render mode from select mode, glRenderMode returns
// the number of objects that were found in our specified region (specified in gluPickMatrix())
// Return to render mode and get the number of objects found
objectsFound = glRenderMode(GL_RENDER);
// Put our projection matrix back to normal.
glMatrixMode(GL_PROJECTION);
// Stop effecting our projection matrix
glPopMatrix();
// Go back to our normal model view matrix
glMatrixMode(GL_MODELVIEW);
if (objectsFound > 0)
{
// 1 is the first object's minimum Z value.
// We use an unsigned int so we don't get a warning with selectBuffer below.
unsigned int lowestDepth = selectBuffer[1];
// Set the selected object to the first object to start it off.
// 3 is the first object's object ID we passed into glLoadName().
int selectedObject = selectBuffer[3];
// Go through all of the objects found, but start at the second one
for(int i = 1; i < objectsFound; i++)
{
// Check if the current objects depth is lower than the current lowest
// Notice we times i by 4 (4 values for each object) and add 1 for the depth.
if(selectBuffer[(i * 4) + 1] < lowestDepth)
{
// Set the current lowest depth
lowestDepth = selectBuffer[(i * 4) + 1];
// Set the current object ID
selectedObject = selectBuffer[(i * 4) + 3];
}
}
// Return the selected object
return selectedObject;
}
// We didn't click on any objects so return nothing
return -1;
}
void PerspectiveGLWidget::rectangularSelection (int preX, int preY, int curX, int curY, QList<Model *> &selectedModels, QList<Vector *> &selectedVertices)
{
GLuint selectBuffer[1024];
glSelectBuffer(1024, selectBuffer);
glRenderMode(GL_SELECT);
glClear(GL_DEPTH_BUFFER_BIT);
glInitNames();
glPushName(0);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
float xCenter = (preX + curX) / 2;
float yCenter = (preY + curY) / 2;
float widthOfSelection = fabs(preX - curX);
if(widthOfSelection < 5)
widthOfSelection = 5;
float heightOfSelection = fabs(preY - curY);
if(heightOfSelection < 5)
heightOfSelection = 5;
int viewport[4];
glGetIntegerv(GL_VIEWPORT, viewport);
gluPickMatrix(xCenter, viewport[3] - yCenter, widthOfSelection, heightOfSelection, viewport);
gluPerspective(45, aspectRatio, 1.0, 1000);
int i = 0;
while(i != ModelManager::getInstance ()->size ())
{
if(ModelManager::getInstance ()->at (i)->getDrawingMode () == ObjectMode)
{
glLoadName(i + 1);
Model *s = ModelManager::getInstance ()->at(i);
ModelManager::getInstance ()->at(i)->setSelectionIdentifier(i + 1);
s->drawObjectModeSelect();
i++;
}
else if(ModelManager::getInstance ()->at (i)->getDrawingMode () == VertexMode)
{
int t = 0;
int j = 0;
while(j != ModelManager::getInstance ()->size())
{
int vertexCount = ModelManager::getInstance ()->at(j)->getVertexManager()->size();
for(int k = 0; k < vertexCount; k++)
{
glLoadName(t + 1);
ModelManager::getInstance ()->at(j)->getVertexManager()->at(k)->setSelectionIdentifier(t + 1);
ModelManager::getInstance ()->at(j)->drawVertexModeSelect(k);
t++;
}
j++;
}
}
}
GLint hits = glRenderMode(GL_RENDER);
GLuint names, *ptr;
ptr = (GLuint *)selectBuffer;
GLuint selectedObject = 0;
for (int i = 0; i < hits; i++)
{
names = *ptr++;
ptr++;
ptr++;
while(names--)
{
selectedObject = *ptr;
for(int k = 0 ; k < ModelManager::getInstance ()->size() ; k++)
{
if(ModelManager::getInstance ()->at (k)->getDrawingMode () == ObjectMode)
{
GLuint modelID = ModelManager::getInstance ()->at(k)->getSelectionIdentifier();
if(modelID == selectedObject)
{
selectedModels.append (ModelManager::getInstance ()->at(k));
}
}
else if(ModelManager::getInstance ()->at (k)->getDrawingMode () == VertexMode)
{
int j = 0;
while(j != ModelManager::getInstance ()->size())
{
int vertexCount = ModelManager::getInstance ()->at(j)->getVertexManager()->size();
for(int k = 0; k < vertexCount; k++)
{
if(selectedObject == (GLuint)ModelManager::getInstance ()->at(j)->getVertexManager()->at(k)->getID())
{
selectedVertices.append (ModelManager::getInstance ()->at(j)->getVertexManager()->at(k));
}
}
j++;
}
}
ptr++;
}
}
}
}
unsigned int C3dView::EndSelect ( void )
{
if (!m_bDrawing)
return 0xffffffff;
GLint hits = 0;
long iTopName = -1;
float LastZ = 0.0f;
bool bFirstShot = true;
long i;
unsigned int j;
GLuint names = 0, *ptr = NULL;
float z1 = 0,z2 = 0;
long iName = 0;
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glFlush();
// end render
hits = glRenderMode(GL_RENDER);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective (m_fov,m_fAspect,m_xNearZ,m_xFarZ);
glViewport (0, 0, m_iViewportX, m_iViewportY);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity ();
char msg[255];
if (hits >0)
{
ptr = (GLuint *) m_uiSelectBuf;
for (i = 0; i < hits; i++)
{ /* for each hit */
names = *ptr;
ptr++;
z1 = (float) *ptr/0x7fffffff;
ptr++;
z2 = (float) *ptr/0x7fffffff;
ptr++;
// stupid compiler bug
sprintf(msg,"names %u f1 %f f2 %f",(unsigned int)names,z1,z2);
if (bFirstShot)
{
LastZ = z1;
bFirstShot = false;
}
for (j = 0; j < names; j++)
{ /* for each name */
iName = *ptr;
ptr++;
}
if (z1 <= LastZ)
{
LastZ = z1;
iTopName = iName;
}
}
}
m_bDrawing = false;
m_bOverlayMode = false;
m_bForcedDrawing = false;
if (iTopName == -1)
return 0;
else
return iTopName;
}
static Icon *_cairo_dock_pick_icon_on_opengl_desklet (CairoDesklet *pDesklet)
{
GLuint selectBuf[4];
GLint hits=0;
GLint viewport[4];
if (! gldi_gl_container_make_current (CAIRO_CONTAINER (pDesklet)))
return NULL;
glGetIntegerv (GL_VIEWPORT, viewport);
glSelectBuffer (4, selectBuf);
glRenderMode(GL_SELECT);
glInitNames();
glPushName(0);
glMatrixMode (GL_PROJECTION);
glPushMatrix ();
glLoadIdentity ();
gluPickMatrix ((GLdouble) pDesklet->container.iMouseX, (GLdouble) (viewport[3] - pDesklet->container.iMouseY), 2.0, 2.0, viewport);
gluPerspective (60.0, 1.0*(GLfloat)pDesklet->container.iWidth/(GLfloat)pDesklet->container.iHeight, 1., 4*pDesklet->container.iHeight);
glMatrixMode (GL_MODELVIEW);
glPushMatrix ();
glLoadIdentity ();
_set_desklet_matrix (pDesklet);
if (pDesklet->iLeftSurfaceOffset != 0 || pDesklet->iTopSurfaceOffset != 0 || pDesklet->iRightSurfaceOffset != 0 || pDesklet->iBottomSurfaceOffset != 0)
{
glTranslatef ((pDesklet->iLeftSurfaceOffset - pDesklet->iRightSurfaceOffset)/2, (pDesklet->iBottomSurfaceOffset - pDesklet->iTopSurfaceOffset)/2, 0.);
glScalef (1. - (double)(pDesklet->iLeftSurfaceOffset + pDesklet->iRightSurfaceOffset) / pDesklet->container.iWidth,
1. - (double)(pDesklet->iTopSurfaceOffset + pDesklet->iBottomSurfaceOffset) / pDesklet->container.iHeight,
1.);
}
glPolygonMode (GL_FRONT, GL_FILL);
glColor4f (1., 1., 1., 1.);
pDesklet->iPickedObject = 0;
if (pDesklet->render_bounding_box != NULL) // surclasse la fonction du moteur de rendu.
{
pDesklet->render_bounding_box (pDesklet);
}
else if (pDesklet->pRenderer && pDesklet->pRenderer->render_bounding_box != NULL)
{
pDesklet->pRenderer->render_bounding_box (pDesklet);
}
else // on le fait nous-memes a partir des coordonnees des icones.
{
glTranslatef (-pDesklet->container.iWidth/2, -pDesklet->container.iHeight/2, 0.);
double x, y, w, h;
Icon *pIcon;
pIcon = pDesklet->pIcon;
if (pIcon != NULL && pIcon->image.iTexture != 0)
{
w = pIcon->fWidth/2;
h = pIcon->fHeight/2;
x = pIcon->fDrawX + w;
y = pDesklet->container.iHeight - pIcon->fDrawY - h;
glLoadName(pIcon->image.iTexture);
glBegin(GL_QUADS);
glVertex3f(x-w, y+h, 0.);
glVertex3f(x+w, y+h, 0.);
glVertex3f(x+w, y-h, 0.);
glVertex3f(x-w, y-h, 0.);
glEnd();
}
GList *ic;
for (ic = pDesklet->icons; ic != NULL; ic = ic->next)
{
pIcon = ic->data;
if (pIcon->image.iTexture == 0)
continue;
w = pIcon->fWidth/2;
h = pIcon->fHeight/2;
x = pIcon->fDrawX + w;
y = pDesklet->container.iHeight - pIcon->fDrawY - h;
glLoadName(pIcon->image.iTexture);
glBegin(GL_QUADS);
glVertex3f(x-w, y+h, 0.);
glVertex3f(x+w, y+h, 0.);
glVertex3f(x+w, y-h, 0.);
glVertex3f(x-w, y-h, 0.);
glEnd();
}
}
glPopName();
hits = glRenderMode (GL_RENDER);
glMatrixMode (GL_PROJECTION);
glPopMatrix ();
glMatrixMode(GL_MODELVIEW);
glPopMatrix ();
Icon *pFoundIcon = NULL;
if (hits != 0)
{
GLuint id = selectBuf[3];
Icon *pIcon;
if (pDesklet->render_bounding_box != NULL)
{
pDesklet->iPickedObject = id;
//g_print ("iPickedObject <- %d\n", id);
pFoundIcon = pDesklet->pIcon; // il faut mettre qqch, sinon la notification est filtree par la macro CD_APPLET_ON_CLICK_BEGIN.
}
else
{
pIcon = pDesklet->pIcon;
if (pIcon != NULL && pIcon->image.iTexture != 0)
{
if (pIcon->image.iTexture == id)
{
pFoundIcon = pIcon;
}
}
if (pFoundIcon == NULL)
{
GList *ic;
for (ic = pDesklet->icons; ic != NULL; ic = ic->next)
{
pIcon = ic->data;
if (pIcon->image.iTexture == id)
{
pFoundIcon = pIcon;
break ;
}
}
}
}
}
return pFoundIcon;
}
void GLwidget::mousePressEvent(QMouseEvent *ev)
{
float posX = ev->x();
float posy = ev->y();
GLuint buff[64] = {0};
GLint hits, view[4];
/*
This choose the buffer where store the values for the selection data
*/
glSelectBuffer(64, buff);
/*
This retrieve info about the viewport
*/
glGetIntegerv(GL_VIEWPORT, view);
/*
Switching in selecton mode
*/
glRenderMode(GL_SELECT);
/*
Clearing the name's stack
This stack contains all the info about the objects
*/
glInitNames();
/*
Now fill the stack with one element (or glLoadName will generate an error)
*/
glPushName(0);
/*
Now modify the vieving volume, restricting selection area around the cursor
*/
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
/*
restrict the draw to an area around the cursor
*/
gluPickMatrix(posX, posy, 1.0, 1.0, view);
gluPerspective(60.0, this->width()/this->height(), 0.0001, 1000.0);
/*
Draw the objects onto the screen
*/
glMatrixMode(GL_MODELVIEW);
/*
draw only the names in the stack, and fill the array
*/
//glutSwapBuffers();
swapBuffers();
//gl_draw();
paintGL();
/*
Do you remeber? We do pushMatrix in PROJECTION mode
*/
glMatrixMode(GL_PROJECTION);
glPopMatrix();
/*
get number of objects drawed in that area
and return to render mode
*/
hits = glRenderMode(GL_RENDER);
qDebug() << hits;
/*
Print a list of the objects
*/
list_hits(hits, buff);
/*
uncomment this to show the whole buffer
* /
gl_selall(hits, buff);
*/
glMatrixMode(GL_MODELVIEW);
}
static void
glgdGraphComputeHoverData(glgdGraph *graph, GLdouble mx, GLdouble my)
{
int i, j;
GLint nameCount;
GLint hitCount;
GLuint selectBuf[64];
GLuint *ptr;
if (graph->nodeHead)
{
glSelectBuffer(64, selectBuf);
glRenderMode(GL_SELECT);
glInitNames();
glgdGraphPushAttributes();
glgdCamBeginPick(&graph->ctrlCam, mx, my);
glgdGraphRender(graph, GL_SELECT);
glgdCamEnd(&graph->ctrlCam);
glgdGraphPopAttributes();
glFlush();
hitCount = glRenderMode(GL_RENDER);
if (hitCount > 0)
{
ptr = &selectBuf[0];
for (i=0; i<hitCount; i++)
{
nameCount = *ptr;
ptr++;
glgdTrace(3, "%3d: nameCount: %d\n", i, nameCount);
glgdTrace(3, " zMin: %g\n", (GLdouble)*ptr/0x7fffffff);
ptr++;
glgdTrace(3, " zMax: %g\n", (GLdouble)*ptr/0x7fffffff);
ptr++;
if (*ptr == GLGDGRAPH_NODENAME)
{
graph->hoverNode = glgdNodeByID(graph->nodeHead, ptr[1]);
graph->hoverLink = NULL;
}
else if (*ptr == GLGDGRAPH_LINKNAME)
{
graph->hoverLink = glgdGraphLinkByNdx(graph, ptr[1]);
if (nameCount > 2)
{
graph->hoverNode = glgdNodeByID(graph->nodeHead, ptr[2]);
}
}
if (s_verbosity >= 3)
{
for (j=0; j<nameCount; j++)
{
glgdTrace(3, " name[%1d]: %d\n", j, ptr[j]);
}
}
ptr += nameCount;
}
}
else
{
graph->hoverNode = NULL;
graph->hoverLink = NULL;
}
}
}
/* picking */
int pick(int x, int y)
{
GLuint hits = 0;
GLint viewport[4];
GLuint selectBuf[512];
GLuint *ptr;
GLuint i,j;
GLint k;
GLint picked = -1;
real mv_matrix[16];
GLuint names, z1, z2, zmax;
glMatrixMode(GL_MODELVIEW);
glGetDoublev( GL_MODELVIEW_MATRIX, mv_matrix);
glGetIntegerv( GL_VIEWPORT, viewport);
glSelectBuffer(sizeof(selectBuf)/sizeof(selectBuf[0]), selectBuf);
glRenderMode(GL_SELECT);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
gluPickMatrix( (GLdouble) x, (GLdouble) (viewport[3] - y), 2.0,2.0,
viewport);
glOrtho(ViewCenter[0]-ViewSize,ViewCenter[0]+ViewSize,
ViewCenter[1]-ViewSize,ViewCenter[1]+ViewSize,
-3*ViewDepth*ViewSize, 3*ViewDepth*ViewSize);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadMatrixd(mv_matrix);
glTranslated(-ObjectCenter[0], -ObjectCenter[1], -ObjectCenter[2]);
glInitNames();
glPushName((unsigned) -1);
for (k= 1; k <=patch_num ; k++)
{
glLoadName(k);
// glCallList(patchList(k));
}
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
hits = glRenderMode(GL_RENDER);
//printf("hits %d \n", hits);
ptr = selectBuf;
for (i = 0; i < hits; i++) { /* for each hit */
names = *ptr;
if(names !=1 ){
//printf("something wrong?\n");
break; // wierd case, openGL bug?
}
ptr++;
z1 = *ptr;
ptr++;
z2 = *ptr;
ptr++;
// printf("names %d \n", names);
if( i ==0 || z2 > zmax )
{
//printf("z: %ud \n", z2);
zmax = z2;
for (j = 0; j < names; j++) { /* for each name */
if ( (*ptr <= (GLuint) patch_num) && (*ptr >= 1) )
{
picked = *ptr;
// return picked;
}
ptr++;
}
}
}
return picked;
}
// `使用OpenGL來繪圖`
void RenderFrameOpenGL(void)
{
// `取得視窗大小`
int w, h;
GutGetWindowSize(w, h);
// `清除畫面`
glClearColor(0.4f, 0.4f, 0.4f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// `在螢幕上畫出行星運動`
RenderSolarSystemOpenGL(false);
/*
`啟動Selection Buffer, 硬體會試著去重畫一次3D物件,`
`但不會更新畫面, 只會記錄下落在畫面中某個范圍內所有3D物件.`
*/
int x,y,buttons[3];
GutGetMouseState(x, y, buttons);
if ( buttons[0] )
{
GLint viewport[4];
glSelectBuffer(BUFSIZE,selectBuf);
glRenderMode(GL_SELECT);
glInitNames();
glGetIntegerv(GL_VIEWPORT,viewport);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
// `設定Selection Buffer的檢查范圍`
gluPickMatrix(x, viewport[3]-y, 3, 3, viewport);
float fRatio = (viewport[2]+0.0) / viewport[3];
glMultMatrixf( (float *)&g_projection_matrix );
// `在Selection Buffer中畫出3D物件`
RenderSolarSystemOpenGL(true);
int hits = glRenderMode(GL_RENDER);
GLuint *ptr = selectBuf;
GLuint Zmin = 0xffffffff;
GLuint SelectedObject = 0;
// `找出檢查范圍中, 距離鏡頭最近的物體.`
for ( int i=0; i<hits; i++, ptr+=4 )
{
if ( ptr[1] < Zmin )
{
Zmin = ptr[1];
SelectedObject = ptr[3];
}
}
switch(SelectedObject)
{
default:
case 0:
printf("Nothing\r");
break;
case 1:
printf("Sun \r");
break;
case 2:
printf("Earth \r");
break;
}
glMatrixMode(GL_PROJECTION);
glPopMatrix();
}
// `把背景backbuffer的畫面呈現出來`
GutSwapBuffersOpenGL();
}
void MakeSelection(int nChoice)
{
// Space for the feedback buffer
GLfloat feedBackBuff[FEED_BUFF_SIZE];
// Storeage for counters, etc.
int size,i,j,count;
// Initial minimum and maximum values
bRect.right = bRect.bottom = -999999.0f;
bRect.left = bRect.top = 999999.0f;
// Set the feedback buffer
glFeedbackBuffer(FEED_BUFF_SIZE,GL_2D, feedBackBuff);
// Enter feedback mode
glRenderMode(GL_FEEDBACK);
// Redraw the scene
DrawObjects();
// Leave feedback mode
size = glRenderMode(GL_RENDER);
// Parse the feedback buffer and get the
// min and max X and Y window coordinates
i = 0;
while(i < size)
{
// Search for appropriate token
if(feedBackBuff[i] == GL_PASS_THROUGH_TOKEN)
if(feedBackBuff[i+1] == (GLfloat)nChoice)
{
i+= 2;
// Loop until next token is reached
while(i < size && feedBackBuff[i] != GL_PASS_THROUGH_TOKEN)
{
// Just get the polygons
if(feedBackBuff[i] == GL_POLYGON_TOKEN)
{
// Get all the values for this polygon
count = (int)feedBackBuff[++i]; // How many vertices
i++;
for(j = 0; j < count; j++) // Loop for each vertex
{
// Min and Max X
if(feedBackBuff[i] > bRect.right)
bRect.right = feedBackBuff[i];
if(feedBackBuff[i] < bRect.left)
bRect.left = feedBackBuff[i];
i++;
// Min and Max Y
if(feedBackBuff[i] > bRect.bottom)
bRect.bottom = feedBackBuff[i];
if(feedBackBuff[i] < bRect.top)
bRect.top = feedBackBuff[i];
i++;
}
}
else
i++; // Get next index and keep looking
}
break;
}
i++;
}
}
guint Render::find_object_at(gdouble x, gdouble y)
{
// Render everything in selection mode
GdkGLContext *glcontext = gtk_widget_get_gl_context (get_widget());
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (get_widget());
const GLsizei BUFSIZE = 256;
GLuint select_buffer[BUFSIZE];
if (!gldrawable || !gdk_gl_drawable_gl_begin (gldrawable, glcontext))
return 0;
glSelectBuffer(BUFSIZE, select_buffer);
(void)glRenderMode(GL_SELECT);
GLint viewport[4];
glMatrixMode (GL_PROJECTION);
glPushMatrix();
glLoadIdentity ();
glGetIntegerv(GL_VIEWPORT,viewport);
gluPickMatrix(x,viewport[3]-y,2,2,viewport); // 2x2 pixels around the cursor
gluPerspective (45.0f, (float)get_width()/(float)get_height(),1.0f, 1000000.0f);
glMatrixMode (GL_MODELVIEW);
glInitNames();
glPushName(0);
glLoadIdentity ();
glTranslatef (0.0, 0.0, -2.0 * m_zoom);
glMultMatrixf (m_transform.M);
CenterView();
glPushMatrix();
glColor3f(0.75f,0.75f,1.0f);
glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1);
Gtk::TreeModel::iterator no_object;
m_view->Draw (no_object);
// restor projection and model matrices
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
// restore rendering mode
GLint hits = glRenderMode(GL_RENDER);
if (gdk_gl_drawable_is_double_buffered(gldrawable))
gdk_gl_drawable_swap_buffers (gldrawable);
else
glFlush();
gdk_gl_drawable_gl_end (gldrawable);
// Process the selection hits
GLuint *ptr = select_buffer;
GLuint name = 0;
GLuint minZ = G_MAXUINT;
for (GLint i = 0; i < hits; i++) { /* for each hit */
GLuint n = *ptr++; // number of hits in this record
GLuint z1 = *ptr++; // Minimum Z in the hit record
ptr++; // Skip Maximum Z coord
if (n > 0 && z1 < minZ) {
// Found an object further forward.
name = *ptr;
minZ = z1;
}
ptr += n; // Skip n name records;
}
return name;
}
bool Viewer::on_button_press_event(GdkEventButton* event)
{
DEBUG_MSG( "Stub: Button " << event->button << " pressed" );
m_lastMouse = Point2D(event->x, event->y);
// pick here
if (m_mode == JOINTS && event->button == 1) {
GLuint buffer[512];
GLint viewport[4];
glSelectBuffer (512, buffer);
// don't actually draw
glRenderMode(GL_SELECT);
glInitNames(); //init the name buffer
GLint hits;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
//glViewport(0, 0, get_width(), get_height
glGetIntegerv(GL_VIEWPORT, viewport);
for (int i = 0; i < 4; i++) {
DEBUG_MSG("Viewport[i]: " << viewport[i]);
}
gluPickMatrix(event->x, viewport[3] - event->y, 1, 1, viewport);
gluPerspective(40.0, (GLfloat)get_width()/(GLfloat)get_height(), 0.1, 1000.0);
// change to model view for drawing
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glPushMatrix();
//Matrix4x4 daT = translation(Vector3D(5.0, 0.0, 0.0));
//glMultMatrixd(daT.transpose().begin());
// gl use column order matrix, m4x4 is row order
Matrix4x4 trackballM = m_trackballTranslation * m_trackballRotation;
glMultMatrixd(trackballM.transpose().begin());
// draw model
m_root->walk_gl(true);
glPopMatrix();
hits = glRenderMode(GL_RENDER);
DEBUG_MSG("picked: " << hits << "==========================");
//parse the hits
int c = 0; // buffer counter
for (int h = 0; h < hits; h++) {
int qStack = buffer[c++];
int minZ = buffer[c++];
int maxZ = buffer[c++];
DEBUG_MSG("HIT(" << h << ")" << qStack << " (" << minZ << "," << maxZ << ")");
for (int q = 0; q < qStack; q++) {
int id = buffer[c++];
DEBUG_MSG("\tname " << id);
SceneNode *selNode = m_root->find(id);
if (selNode == NULL) {
*(int*)0=0;
DEBUG_MSG("IMPOSSIBLE");
exit(-1);
}
// check if selNode is selectable (has a joint parent)
if (selNode->jointParent()) {
bool selected = selNode->toggleSelected();
if (selected) {
m_selected.push_back(selNode);
}
else {
m_selected.remove(selNode);
}
}
}
}
// select the primitives if they have joint owners
// when dragging, move the joints of the parents
// able to get GemeotryNode from id
// tree or global arraylist
// get parent from child
}
invalidate();
return true;
}
void GLWidget::processFindingObject(double p_xPos, double p_yPos)
{
int view[4];
uint selectionBuffer[32] = {0};
int numberOfSelectedObjects = 0;
// For selected objects
glSelectBuffer(32, selectionBuffer);
glGetIntegerv(GL_VIEWPORT, view);
glRenderMode(GL_SELECT);
// Clearing object names for identifying objects
glInitNames();
glPushName(0);
// Backup projection matrix in order restore it after view restriction around cursor area
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
// Restrict the draw to an area around the cursor
gluPickMatrix(p_xPos, p_yPos, 10.0, 10.0, view);
gluPerspective(30.0, 1.0, 1.0, 10000.0);
// Redraw with restricted view area
glMatrixMode(GL_MODELVIEW);
m_mapRenderer.setSelectionMode();
m_mapRenderer.render(this);
// Restore projection matrix
glMatrixMode(GL_PROJECTION);
glPopMatrix();
numberOfSelectedObjects = glRenderMode(GL_RENDER);
glMatrixMode(GL_MODELVIEW);
std::vector<int> selectedObjects;
if(numberOfSelectedObjects > 0) {
Hit* pHitArray = reinterpret_cast<Hit*>(selectionBuffer);
for(int i = 0; i < numberOfSelectedObjects; i++) {
if(m_mapRenderer.getTurnMapId() == pHitArray[i].id && m_moveMap) {
m_turnMap = true;
return;
}
selectedObjects.push_back(pHitArray[i].id);
}
}
else {
selectedObjects.push_back(0);
}
if(m_moveMap) {
return;
}
m_mapRenderer.selectObjects(selectedObjects);
updateGL();
int selectionNumber = selectedObjects.front();
if(0 != selectionNumber && m_mapRenderer.getTurnMapId() != selectionNumber) {
showPlaceDetailsWidget(selectionNumber);
}
}
void PerspectiveGLWidget::pointSelection (int x, int y, QList<Model *> &selectedModels, QList<Vector *> &selectedVertices)
{
GLuint selectBuffer[1024];
glSelectBuffer(1024, selectBuffer);
glRenderMode(GL_SELECT);
glClear(GL_DEPTH_BUFFER_BIT);
glInitNames();
glPushName(0);
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
int viewport[4];
glGetIntegerv(GL_VIEWPORT, viewport);
gluPickMatrix(x, viewport[3] - y, 10.0, 10.0, viewport);
gluPerspective(45, aspectRatio, 1.0, 1000);
int i = 0;
while(i != ModelManager::getInstance ()->size ())
{
if(ModelManager::getInstance ()->at (i)->getDrawingMode () == ObjectMode)
{
glLoadName(i + 1);
Model *s = ModelManager::getInstance ()->at(i);
ModelManager::getInstance ()->at(i)->setSelectionIdentifier(i + 1);
s->drawObjectModeSelect();
i++;
}
else if(ModelManager::getInstance ()->at (i)->getDrawingMode () == VertexMode)
{
int i = 0;
int j = 0;
while(j != ModelManager::getInstance ()->size())
{
int vertexCount = ModelManager::getInstance ()->at(j)->getVertexManager()->size();
for(int k = 0; k < vertexCount; k++)
{
glLoadName(i + 1);
ModelManager::getInstance ()->at(j)->getVertexManager()->at(k)->setSelectionIdentifier(i + 1);
ModelManager::getInstance ()->at(j)->drawVertexModeSelect(k);
i++;
}
j++;
}
}
}
GLint hits = glRenderMode(GL_RENDER);
GLuint names, *ptr;
ptr = (GLuint *)selectBuffer;
GLuint selectedObject = 0;
for (int i = 0; i < hits; i++)
{
names = *ptr++;
ptr++;
ptr++;
while(names--)
{
selectedObject = *ptr;
ptr++;
}
}
for(int k = 0 ; k < ModelManager::getInstance ()->size() ; k++)
{
if(ModelManager::getInstance ()->at (k)->getDrawingMode () == ObjectMode)
{
GLuint modelID = ModelManager::getInstance ()->at(k)->getSelectionIdentifier();
if(modelID == selectedObject)
{
selectedModels.append (ModelManager::getInstance ()->at(k));
}
}
else if(ModelManager::getInstance ()->at (i)->getDrawingMode () == VertexMode)
{
int j = 0;
while(j != ModelManager::getInstance ()->size())
{
int vertexCount = ModelManager::getInstance ()->at(j)->getVertexManager()->size();
for(int k = 0; k < vertexCount; k++)
{
if(selectedObject == (GLuint)ModelManager::getInstance ()->at(j)->getVertexManager()->at(k)->getID())
{
selectedVertices.append (ModelManager::getInstance ()->at(j)->getVertexManager()->at(k));
}
}
j++;
}
}
}
}
// Select
void bwindow_pick(BWindow self){
static GLuint selectionBuffer[256];
GLuint *ptr, *selection, num_obj, z1,z2,z;
GLint hits;
int num, i,j;
raster_hit =0;
current_window = self;
draw_status = SELECT;
self->event.pos.y = self->height - self->event.pos.y;
self->event.dpos.y *=-1;
pick_dx = self->event.pos.x - pick_x;
pick_dy = self->event.pos.y - pick_y;
pick_x = self->event.pos.x;
pick_y = self->event.pos.y;
// initialize selection buffer
glSelectBuffer(256,selectionBuffer);
//--------------------------------------------------------------------------------------------
glViewport(0,0,self->width,self->height);
current_viewport[0] = 0;
current_viewport[1] = 0;
current_viewport[2] = self->width;
current_viewport[3] = self->height;
//--------------------------------------------------------------------------------------------
/*
* Hit stack looks like this:
*
* num_obj (GLuint)- number of objects on stack
* z1 (GLuint) - value of closest point in hit
* z2 (GLuint) - value of farthest point in hit
* first object in hit - this is the id (or in this case pointer) of the first object in hit
* .
* .
* n object in hit - this is the id (or in this case pointer) of the n object in hit
*/
ptr = selectionBuffer;
num_obj = z1 = z2 = z=0;
selection=NULL;
glRenderMode(GL_SELECT);
glInitNames();
// iterate window's items and draw them
im_draw( self->items);
hits = glRenderMode(GL_RENDER); //number of hit stacks
if (hits){
// initialize values for first hit
num_obj = num = *ptr++; // number of objects in stack
z = z1 = *ptr++; // min depth of hit
z2 = *ptr++; // max depth of hit
selection = ptr; // selection remembers closest hit
// if there is more than one hit selection will be the one with the nearest point
for (i = 1; i<hits ; i++){
ptr+=num; // increment ahead to next hit
num = *ptr++;
z1 = *ptr++;
z2 = *ptr++;
if (z1 < z){
selection = ptr;
z = z1;
num_obj=num;
}
}
// num is the number of hits in this stack
// j = 0 is the view
Layer lay = NULL;
Link child = NULL;
Binding binding = NULL;
view_transform(current_view);
for (j = 0 ; j< num_obj ; j++){
child=(Link) index_get(bound_layers, *selection++);
lay = child->value.vptr;
layer_transform(child->value.vptr);
binding = lay->bindings;
while(binding){
if( ((binding->event.state & current_window->event.state) == binding->event.state) &&
(binding->event.key == current_window->event.key))
{
callback(child,binding->callback);
}
binding = binding->next;
}
}
}
if (self->update) bwindow_paint(self);
}
/* Mouse hit detection
*/
static void
find_mouse_gear (ModeInfo *mi)
{
pinion_configuration *pp = &pps[MI_SCREEN(mi)];
int screen_width = MI_WIDTH (mi);
int screen_height = MI_HEIGHT (mi);
GLfloat h = (GLfloat) screen_height / (GLfloat) screen_width;
int x, y;
int hits;
pp->mouse_gear_id = 0;
/* Poll mouse position */
{
Window r, c;
int rx, ry;
unsigned int m;
XQueryPointer (MI_DISPLAY (mi), MI_WINDOW (mi),
&r, &c, &rx, &ry, &x, &y, &m);
}
if (x < 0 || y < 0 || x > screen_width || y > screen_height)
return; /* out of window */
/* Run OpenGL hit detector */
{
GLint vp[4];
GLuint selbuf[512];
glSelectBuffer (sizeof(selbuf), selbuf); /* set up "select" mode */
glRenderMode (GL_SELECT);
glMatrixMode (GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glGetIntegerv (GL_VIEWPORT, vp); /* save old vp */
gluPickMatrix (x, vp[3]-y, 5, 5, vp);
gluPerspective (30.0, 1/h, 1.0, 100.0); /* must match reshape_pinion() */
glMatrixMode (GL_MODELVIEW);
draw_gears (mi); /* render into "select" buffer */
glMatrixMode (GL_PROJECTION); /* restore old vp */
glPopMatrix ();
glMatrixMode (GL_MODELVIEW);
glFlush();
hits = glRenderMode (GL_RENDER); /* done selecting */
if (hits > 0)
{
int i;
GLuint name_count = 0;
GLuint *p = (GLuint *) selbuf;
GLuint *pnames = 0;
GLuint min_z = ~0;
for (i = 0; i < hits; i++)
{
int names = *p++;
if (*p < min_z) /* find match closest to screen */
{
name_count = names;
min_z = *p;
pnames = p+2;
}
p += names+2;
}
if (name_count > 0) /* take first hit */
pp->mouse_gear_id = pnames[0];
}
}
}
gint buttonpress(GtkWidget *glarea, GdkEventButton *event) {
int x = (int) event->x;
int y = (int) event->y;
GLuint *buffer;
GLint hits;
GLint viewport[4];
switch(event->button) {
case 1:
// button 1, do picking
glGetIntegerv(GL_VIEWPORT, viewport);
buffer = new GLuint[doc->world.list.size() * 4];
glSelectBuffer(doc->world.list.size() * 4, buffer);
glRenderMode(GL_SELECT);
glInitNames();
glPushName(0);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
gluPickMatrix((double) x, (double) (viewport[3] - y), 1.0, 1.0, viewport);
gluPerspective(45.0, (float) (viewport[2] - viewport[0]) / (float) (viewport[3] - viewport[1]), 3.0, 2500.0);
glMatrixMode(GL_MODELVIEW);
doc->world.render_targets();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
hits = glRenderMode(GL_RENDER);
if(hits > 0) {
int choose = buffer[3];
int depth = buffer[1];
for(int i = 0; i < hits; i++) {
if(buffer[i * 4 + 1] < depth) {
choose = buffer[i * 4 + 3];
depth = buffer[i * 4 + 1];
}
}
choose--;
mainwin->select(choose);
} else {
mainwin->unselectAll();
}
delete buffer;
break;
case 2:
// button 2, pick and center
glGetIntegerv(GL_VIEWPORT, viewport);
buffer = new GLuint[doc->world.list.size() * 4];
glSelectBuffer(doc->world.list.size() * 4, buffer);
glRenderMode(GL_SELECT);
glInitNames();
glPushName(0);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
gluPickMatrix((double) x, (double) (viewport[3] - y), 1.0, 1.0, viewport);
gluPerspective(45.0, (float) (viewport[2] - viewport[0]) / (float) (viewport[3] - viewport[1]), 3.0, 2500.0);
glMatrixMode(GL_MODELVIEW);
doc->world.render_targets();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
hits = glRenderMode(GL_RENDER);
if(hits > 0) {
int choose = buffer[3];
int depth = buffer[1];
for(int i = 0; i < hits; i++) {
if(buffer[i * 4 + 1] < depth) {
choose = buffer[i * 4 + 3];
depth = buffer[i * 4 + 1];
}
}
choose--;
if(doc->world.list[choose].type != LINK) {
doc->camera.fx = doc->world.list[choose].obj->get_px();
doc->camera.fy = doc->world.list[choose].obj->get_py();
doc->camera.fz = doc->world.list[choose].obj->get_pz();
doc->camera.fcamera = true;
}
mainwin->select(choose);
} else {
doc->camera.fx = 0;
doc->camera.fy = 0;
doc->camera.fz = 0;
doc->camera.fcamera = true;
mainwin->unselectAll();
}
delete buffer;
break;
case 3:
// button 3, start roaming
mainwin->mouse_x = event->x_root;
mainwin->mouse_y = event->y_root;
break;
case 4:
// button 4, mouse wheel up, zoom in
break;
case 5:
// button 5, mouse wheel down, zoom out
break;
}
return TRUE;
}
void get_light_under_mouse()
{
//ok, first of all, let's see what objects we have in range...
int i, count, x, y, dist1, dist2, hits;
GLint viewport[4];
GLuint *buffer, z_coordinate;
double matrix[16];
selected_light = -1;
x = (int)-camera_x;
y = (int)-camera_y;
count = 0;
for (i = 0; i < MAX_LIGHTS; i++)
{
if (lights_list[i])
{
dist1 = x - (int)lights_list[i]->pos_x;
dist2 = y - (int)lights_list[i]->pos_y;
if (dist1 * dist1 + dist2 * dist2 <= ((40 * 40) * (zoom_level / 15.75f)))
{
count++;
}
}
}
if (count == 0)
{
return;
}
count++;
count *= 4;
glGetIntegerv(GL_VIEWPORT, viewport);
buffer = malloc(count * sizeof(GLuint));
glSelectBuffer(count, buffer);
glGetDoublev(GL_PROJECTION_MATRIX, matrix);
glRenderMode(GL_SELECT);
glInitNames();
glPushName(0);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
gluPickMatrix(mouse_x, window_height-mouse_y, 1.0, 1.0, viewport);
glMultMatrixd(matrix);
glMatrixMode(GL_MODELVIEW);
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
glPushMatrix();
glLoadIdentity(); // Reset The Matrix
Move();
for (i = 0; i < MAX_LIGHTS; i++)
{
if (lights_list[i])
{
dist1 = x - (int)lights_list[i]->pos_x;
dist2 = y - (int)lights_list[i]->pos_y;
if (dist1 * dist1 + dist2 * dist2 <= ((40 * 40) * (zoom_level / 15.75f)))
{
glLoadName(i);
draw_light_source(lights_list[i]);
}
}
}
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
hits = glRenderMode(GL_RENDER);
z_coordinate = 0xFFFFFFFF;
for (i = 0; i < hits; i++)
{
if (buffer[(i * 4) + 1] < z_coordinate)
{
selected_light = buffer[(i*4)+3];
z_coordinate = buffer[(i*4)+1];
}
}
free(buffer);
}
static void
zprPick(GLdouble x, GLdouble y,GLdouble delX, GLdouble delY)
{
GLuint buffer[1024];
const int bufferSize = sizeof(buffer)/sizeof(GLuint);
GLint viewport[4];
GLdouble projection[16];
GLint hits;
GLint i,j,k;
GLint min = -1;
GLuint minZ = -1;
glSelectBuffer(bufferSize,buffer); /* Selection buffer for hit records */
glRenderMode(GL_SELECT); /* OpenGL selection mode */
glInitNames(); /* Clear OpenGL name stack */
glMatrixMode(GL_PROJECTION);
glPushMatrix(); /* Push current projection matrix */
glGetIntegerv(GL_VIEWPORT,viewport); /* Get the current viewport size */
glGetDoublev(GL_PROJECTION_MATRIX,projection); /* Get the projection matrix */
glLoadIdentity(); /* Reset the projection matrix */
gluPickMatrix(x,y,delX,delY,viewport); /* Set the picking matrix */
glMultMatrixd(projection); /* Apply projection matrix */
glMatrixMode(GL_MODELVIEW);
if (selection)
selection(); /* Draw the scene in selection mode */
hits = glRenderMode(GL_RENDER); /* Return to normal rendering mode */
/* Diagnostic output to stdout */
#ifndef NDEBUG
if (hits!=0)
{
printf("hits = %d\n",hits);
for (i=0,j=0; i<hits; i++)
{
printf("\tsize = %u, min = %u, max = %u : ",buffer[j],buffer[j+1],buffer[j+2]);
for (k=0; k < (GLint) buffer[j]; k++)
printf("%u ",buffer[j+3+k]);
printf("\n");
j += 3 + buffer[j];
}
}
#endif
/* Determine the nearest hit */
if (hits)
{
for (i=0,j=0; i<hits; i++)
{
if (buffer[j+1]<minZ)
{
/* If name stack is empty, return -1 */
/* If name stack is not empty, return top-most name */
if (buffer[j]==0)
min = -1;
else
min = buffer[j+2+buffer[j]];
minZ = buffer[j+1];
}
j += buffer[j] + 3;
}
}
glMatrixMode(GL_PROJECTION);
glPopMatrix(); /* Restore projection matrix */
glMatrixMode(GL_MODELVIEW);
if (pick)
pick(min); /* Pass pick event back to application */
}
int RetrieveObjectID(int x, int y)
{
int objectsFound = 0; // This will hold the amount of objects clicked
int viewportCoords[4] = {0}; // We need an array to hold our view port coordinates
// This will hold the ID's of the objects we click on.
// We make it an arbitrary number of 32 because openGL also stores other information
// that we don't care about. There is about 4 slots of info for every object ID taken up.
unsigned int selectBuffer[32] = {0};
// glSelectBuffer is what we register our selection buffer with. The first parameter
// is the size of our array. The next parameter is the buffer to store the information found.
// More information on the information that will be stored in selectBuffer is further below.
glSelectBuffer(32, selectBuffer); // Setup our selection buffer to accept object ID's
// This function returns information about many things in OpenGL. We pass in GL_VIEWPORT
// to get the view port coordinates. It saves it like a RECT with {top, left, bottom, right}
glGetIntegerv(GL_VIEWPORT, viewportCoords); // Get the current view port coordinates
// Now we want to get out of our GL_MODELVIEW matrix and start effecting our
// GL_PROJECTION matrix. This allows us to check our X and Y coords against 3D space.
glMatrixMode(GL_PROJECTION); // We want to now effect our projection matrix
glPushMatrix(); // We push on a new matrix so we don't effect our 3D projection
// This makes it so it doesn't change the frame buffer if we render into it, instead,
// a record of the names of primitives that would have been drawn if the render mode was
// GL_RENDER are now stored in the selection array (selectBuffer).
glRenderMode(GL_SELECT); // Allows us to render the objects, but not change the frame buffer
glLoadIdentity(); // Reset our projection matrix
// gluPickMatrix allows us to create a projection matrix that is around our
// cursor. This basically only allows rendering in the region that we specify.
// If an object is rendered into that region, then it saves that objects ID for us (The magic).
// The first 2 parameters are the X and Y position to start from, then the next 2
// are the width and height of the region from the starting point. The last parameter is
// of course our view port coordinates. You will notice we subtract "y" from the
// BOTTOM view port coordinate. We do this to flip the Y coordinates around. The 0 y
// coordinate starts from the bottom, which is opposite to window's coordinates.
// We also give a 2 by 2 region to look for an object in. This can be changed to preference.
gluPickMatrix(x, viewportCoords[3] - y, 2, 2, viewportCoords);
// Next, we just call our normal gluPerspective() function, exactly as we did on startup.
// This is to multiply the perspective matrix by the pick matrix we created up above.
gluPerspective(45.0f,(float)g_rRect.right/(float)g_rRect.bottom,0.1f,150.0f);
glMatrixMode(GL_MODELVIEW); // Go back into our model view matrix
RenderScene(); // Now we render into our selective mode to pinpoint clicked objects
// If we return to our normal render mode from select mode, glRenderMode returns
// the number of objects that were found in our specified region (specified in gluPickMatrix())
objectsFound = glRenderMode(GL_RENDER); // Return to render mode and get the number of objects found
glMatrixMode(GL_PROJECTION); // Put our projection matrix back to normal.
glPopMatrix(); // Stop effecting our projection matrix
glMatrixMode(GL_MODELVIEW); // Go back to our normal model view matrix
// PHEW! That was some stuff confusing stuff. Now we are out of the clear and should have
// an ID of the object we clicked on. objectsFound should be at least 1 if we found an object.
if (objectsFound > 0)
{
// If we found more than one object, we need to check the depth values
// of all the objects found. The object with the LEAST depth value is
// the closest object that we clicked on. Depending on what you are doing,
// you might want ALL the objects that you clicked on (if some objects were
// behind the closest one), but for this tutorial we just care about the one
// in front. So, how do we get the depth value? Well, The selectionBuffer
// holds it. For every object there is 4 values. The first value is
// "the number of names in the name stack at the time of the event, followed
// by the minimum and maximum depth values of all vertices that hit since the
// previous event, then followed by the name stack contents, bottom name first." - MSDN
// The only ones we care about are the minimum depth value (the second value) and
// the object ID that was passed into glLoadName() (This is the fourth value).
// So, [0 - 3] is the first object's data, [4 - 7] is the second object's data, etc...
// Be carefull though, because if you are displaying 2D text in front, it will
// always find that as the lowest object. So make sure you disable text when
// rendering the screen for the object test. I use a flag for RenderScene().
// So, lets get the object with the lowest depth!
// Set the lowest depth to the first object to start it off.
// 1 is the first object's minimum Z value.
// We use an unsigned int so we don't get a warning with selectBuffer below.
unsigned int lowestDepth = selectBuffer[1];
// Set the selected object to the first object to start it off.
// 3 is the first object's object ID we passed into glLoadName().
int selectedObject = selectBuffer[3];
// Go through all of the objects found, but start at the second one
for(int i = 1; i < objectsFound; i++)
{
// Check if the current objects depth is lower than the current lowest
// Notice we times i by 4 (4 values for each object) and add 1 for the depth.
if(selectBuffer[(i * 4) + 1] < lowestDepth)
{
// Set the current lowest depth
lowestDepth = selectBuffer[(i * 4) + 1];
// Set the current object ID
selectedObject = selectBuffer[(i * 4) + 3];
}
}
// Return the selected object
return selectedObject;
}
// We didn't click on any objects so return 0
return 0;
}
void Selection(void) // This Is Where Selection Is Done
{
GLuint buffer[512]; // Set Up A Selection Buffer
GLint hits; // The Number Of Objects That We Selected
if (game) // Is Game Over?
return; // If So, Don't Bother Checking For Hits
PlaySound("data/shot.wav",NULL,SND_ASYNC); // Play Gun Shot Sound
// The Size Of The Viewport. [0] Is <x>, [1] Is <y>, [2] Is <length>, [3] Is <width>
GLint viewport[4];
// This Sets The Array <viewport> To The Size And Location Of The Screen Relative To The Window
glGetIntegerv(GL_VIEWPORT, viewport);
glSelectBuffer(512, buffer); // Tell OpenGL To Use Our Array For Selection
// Puts OpenGL In Selection Mode. Nothing Will Be Drawn. Object ID's and Extents Are Stored In The Buffer.
(void) glRenderMode(GL_SELECT);
glInitNames(); // Initializes The Name Stack
glPushName(0); // Push 0 (At Least One Entry) Onto The Stack
glMatrixMode(GL_PROJECTION); // Selects The Projection Matrix
glPushMatrix(); // Push The Projection Matrix
glLoadIdentity(); // Resets The Matrix
// This Creates A Matrix That Will Zoom Up To A Small Portion Of The Screen, Where The Mouse Is.
gluPickMatrix((GLdouble) mouse_x, (GLdouble) (viewport[3]-mouse_y), 1.0f, 1.0f, viewport);
// Apply The Perspective Matrix
gluPerspective(45.0f, (GLfloat) (viewport[2]-viewport[0])/(GLfloat) (viewport[3]-viewport[1]), 0.1f, 100.0f);
glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix
DrawTargets(); // Render The Targets To The Selection Buffer
glMatrixMode(GL_PROJECTION); // Select The Projection Matrix
glPopMatrix(); // Pop The Projection Matrix
glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix
hits=glRenderMode(GL_RENDER); // Switch To Render Mode, Find Out How Many
// Objects Were Drawn Where The Mouse Was
if (hits > 0) // If There Were More Than 0 Hits
{
int choose = buffer[3]; // Make Our Selection The First Object
int depth = buffer[1]; // Store How Far Away It Is
for (int loop = 1; loop < hits; loop++) // Loop Through All The Detected Hits
{
// If This Object Is Closer To Us Than The One We Have Selected
if (buffer[loop*4+1] < GLuint(depth))
{
choose = buffer[loop*4+3]; // Select The Closer Object
depth = buffer[loop*4+1]; // Store How Far Away It Is
}
}
if (!object[choose].hit) // If The Object Hasn't Already Been Hit
{
object[choose].hit=TRUE; // Mark The Object As Being Hit
score+=1; // Increase Score
kills+=1; // Increase Level Kills
if (kills>level*5) // New Level Yet?
{
miss=0; // Misses Reset Back To Zero
kills=0; // Reset Level Kills
level+=1; // Increase Level
if (level>30) // Higher Than 30?
level=30; // Set Level To 30 (Are You A God?)
}
}
}
}
int GLWidget::hitObjects(int x, int y, const int nMaxObjectsHit)
{
int nFoundObjects = 0;
int viewport[4] = {0};
GLuint selectBuffer[32];
int N = 6;
glInitNames();
glPushName(0);
//Register selection buffer
glSelectBuffer(32, selectBuffer);
//Get Viewport from OpenGL. Can use this function to obtain many info
glGetIntegerv(GL_VIEWPORT, viewport);
//Need to change projection matrix
glMatrixMode(GL_PROJECTION);
//Save current projection matrix
glPushMatrix();
//load identity to top matrix
glLoadIdentity();
//Pick Matrix for receiving points
gluPickMatrix((double)x, (double)(viewport[3] - y), N, N, viewport);
//Perspective view or Orthogonal View. Multiply by current projection matrix
if(m_bPerspective)
{
GLfloat fov = 60.0f;
gluPerspective(fov, (GLdouble)width()/height(), 1, 3000);
}
else
glOrtho(-1.0, +1.0, -1.0, 1.0, -1.0, 1.0);
//Set render mode to select objects
//glRenderMode(GL_SELECT);
//Goto Model View to draw objects
glMatrixMode(GL_MODELVIEW);
//Draw with names
m_cylinder.drawCurveControlPoints(true);
//Revert to previous projection matrix
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
nFoundObjects = glRenderMode(GL_RENDER);
if(nFoundObjects > 0)
{
//Minimum Depth
GLuint minDepth = selectBuffer[1];
//Selection ID
int selectID = selectBuffer[3];
for(int i=1; i < nFoundObjects; i++)
{
if(selectBuffer[i*4 + 1] < minDepth)
{
minDepth = selectBuffer[i*4 + 1];
selectID = selectBuffer[i*4 + 3];
}
}
return selectID;
}
return -1;
}
void VisualSceneOCCGeometry :: MouseDblClick (int px, int py)
{
int hits;
// select surface triangle by mouse click
GLuint selbuf[10000];
glSelectBuffer (10000, selbuf);
glRenderMode (GL_SELECT);
GLint viewport[4];
glGetIntegerv (GL_VIEWPORT, viewport);
glMatrixMode (GL_PROJECTION);
glPushMatrix();
GLdouble projmat[16];
glGetDoublev (GL_PROJECTION_MATRIX, projmat);
glLoadIdentity();
gluPickMatrix (px, viewport[3] - py, 1, 1, viewport);
glMultMatrixd (projmat);
glClearColor(backcolor, backcolor, backcolor, 1.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode (GL_MODELVIEW);
glPushMatrix();
glMultMatrixf (transformationmat);
glInitNames();
glPushName (1);
glPolygonOffset (1, 1);
glEnable (GL_POLYGON_OFFSET_FILL);
glDisable(GL_CLIP_PLANE0);
// Philippose - 30/01/2009
// Enable clipping planes for Selection mode in OCC Geometry
if (vispar.clipenable)
{
Vec<3> n(clipplane[0], clipplane[1], clipplane[2]);
double len = Abs(n);
double mu = -clipplane[3] / (len*len);
Point<3> p (mu * n);
n /= len;
Vec<3> t1 = n.GetNormal ();
Vec<3> t2 = Cross (n, t1);
double xi1mid = (center - p) * t1;
double xi2mid = (center - p) * t2;
glLoadName (0);
glBegin (GL_QUADS);
glVertex3dv (p + (xi1mid-rad) * t1 + (xi2mid-rad) * t2);
glVertex3dv (p + (xi1mid+rad) * t1 + (xi2mid-rad) * t2);
glVertex3dv (p + (xi1mid+rad) * t1 + (xi2mid+rad) * t2);
glVertex3dv (p + (xi1mid-rad) * t1 + (xi2mid+rad) * t2);
glEnd ();
}
glCallList (trilists.Get(1));
glDisable (GL_POLYGON_OFFSET_FILL);
glPopName();
glMatrixMode (GL_PROJECTION);
glPopMatrix();
glMatrixMode (GL_MODELVIEW);
glPopMatrix();
glFlush();
hits = glRenderMode (GL_RENDER);
int minname = 0;
GLuint mindepth = 0;
// find clippingplane
GLuint clipdepth = 0; // GLuint(-1);
for (int i = 0; i < hits; i++)
{
int curname = selbuf[4*i+3];
if (!curname) clipdepth = selbuf[4*i+1];
}
for (int i = 0; i < hits; i++)
{
int curname = selbuf[4*i+3];
GLuint curdepth = selbuf[4*i+1];
if (curname && (curdepth> clipdepth) &&
(curdepth < mindepth || !minname))
{
mindepth = curdepth;
minname = curname;
}
}
occgeometry->LowLightAll();
if (minname)
{
occgeometry->fvispar[minname-1].Highlight();
if (vispar.occzoomtohighlightedentity)
occgeometry->changed = OCCGEOMETRYVISUALIZATIONFULLCHANGE;
else
occgeometry->changed = OCCGEOMETRYVISUALIZATIONHALFCHANGE;
cout << "Selected face: " << minname << endl;
}
else
{
occgeometry->changed = OCCGEOMETRYVISUALIZATIONHALFCHANGE;
}
glDisable(GL_CLIP_PLANE0);
SelectFaceInOCCDialogTree (minname);
// Philippose - 30/01/2009
// Set the currently selected face in the array
// for local face mesh size definition
occgeometry->SetSelectedFace(minname);
// selecttimestamp = NextTimeStamp();
}
void Gource::mousetrace(Frustum& frustum, float dt) {
GLuint buffer[512];
GLint viewport[4];
glGetIntegerv(GL_VIEWPORT, viewport);
glSelectBuffer(512, buffer);
glDepthFunc(GL_LEQUAL);
glEnable(GL_DEPTH_TEST);
(void) glRenderMode(GL_SELECT);
glInitNames();
glPushName(0);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPickMatrix((GLdouble) mousepos.x, (GLdouble) (viewport[3]-mousepos.y), 1.0f, 1.0f, viewport);
gluPerspective(90.0f, (GLfloat)display.width/(GLfloat)display.height, 0.1f, camera.getZFar());
camera.look();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
for(std::map<std::string,RUser*>::iterator it = users.begin(); it!=users.end(); it++) {
it->second->drawSimple(dt);
}
glDisable(GL_TEXTURE_2D);
glColor4f(1.0, 1.0, 1.0, 1.0);
root->drawSimple(frustum, dt);
glMatrixMode(GL_MODELVIEW);
mouse_hits = glRenderMode(GL_RENDER);
RFile* fileSelection = 0;
RUser* userSelection = 0;
if (mouse_hits > 0) {
int choice = buffer[3];
GLuint depth = buffer[1];
for (int loop = 1; loop < mouse_hits; loop++) {
if (buffer[loop*4+1] < depth) {
choice = buffer[loop*4+3];
depth = buffer[loop*4+1];
}
}
if(choice != 0) {
selectionDepth = depth;
std::map<int, RFile*>::iterator filetest;
std::map<int, RUser*>::iterator usertest;
if((filetest = tagfilemap.find(choice)) != tagfilemap.end()) {
fileSelection = filetest->second;
}
else if((usertest = tagusermap.find(choice)) != tagusermap.end()) {
userSelection = usertest->second;
}
}
}
glDisable(GL_DEPTH_TEST);
// is over a file
if(fileSelection != 0) {
// un hover a user
if(hoverUser != 0) {
hoverUser->setMouseOver(false);
hoverUser = 0;
}
if(fileSelection != hoverFile) {
//deselect previous selection
if(hoverFile !=0) hoverFile->setMouseOver(false);
//select new
fileSelection->setMouseOver(true);
hoverFile = fileSelection;
}
// is over a user
} else if(userSelection != 0) {
// un hover a file
if(hoverFile != 0) {
hoverFile->setMouseOver(false);
hoverFile = 0;
}
if(userSelection != hoverUser) {
//deselect previous selection
if(hoverUser !=0) hoverUser->setMouseOver(false);
//select new
userSelection->setMouseOver(true);
hoverUser = userSelection;
}
} else {
if(hoverFile!=0) hoverFile->setMouseOver(false);
if(hoverUser!=0) hoverUser->setMouseOver(false);
hoverFile=0;
hoverUser=0;
}
if(mouseclicked) {
if(hoverUser!=0) selectUser(hoverUser);
else if(hoverFile!=0) selectFile(hoverFile);
else selectUser(0);
}
}
int
__glXDispSwap_RenderMode(__GLXclientState * cl, GLbyte * pc)
{
ClientPtr client = cl->client;
__GLXcontext *cx;
xGLXRenderModeReply reply;
GLint nitems = 0, retBytes = 0, retval, newModeCheck;
GLubyte *retBuffer = NULL;
GLenum newMode;
__GLX_DECLARE_SWAP_VARIABLES;
__GLX_DECLARE_SWAP_ARRAY_VARIABLES;
int error;
REQUEST_FIXED_SIZE(xGLXSingleReq, 4);
__GLX_SWAP_INT(&((xGLXSingleReq *) pc)->contextTag);
cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
if (!cx) {
return error;
}
pc += __GLX_SINGLE_HDR_SIZE;
__GLX_SWAP_INT(pc);
newMode = *(GLenum *) pc;
retval = glRenderMode(newMode);
/* Check that render mode worked */
glGetIntegerv(GL_RENDER_MODE, &newModeCheck);
if (newModeCheck != newMode) {
/* Render mode change failed. Bail */
newMode = newModeCheck;
goto noChangeAllowed;
}
/*
** Render mode might have still failed if we get here. But in this
** case we can't really tell, nor does it matter. If it did fail, it
** will return 0, and thus we won't send any data across the wire.
*/
switch (cx->renderMode) {
case GL_RENDER:
cx->renderMode = newMode;
break;
case GL_FEEDBACK:
if (retval < 0) {
/* Overflow happened. Copy the entire buffer */
nitems = cx->feedbackBufSize;
}
else {
nitems = retval;
}
retBytes = nitems * __GLX_SIZE_FLOAT32;
retBuffer = (GLubyte *) cx->feedbackBuf;
__GLX_SWAP_FLOAT_ARRAY((GLbyte *) retBuffer, nitems);
cx->renderMode = newMode;
break;
case GL_SELECT:
if (retval < 0) {
/* Overflow happened. Copy the entire buffer */
nitems = cx->selectBufSize;
}
else {
GLuint *bp = cx->selectBuf;
GLint i;
/*
** Figure out how many bytes of data need to be sent. Parse
** the selection buffer to determine this fact as the
** return value is the number of hits, not the number of
** items in the buffer.
*/
nitems = 0;
i = retval;
while (--i >= 0) {
GLuint n;
/* Parse select data for this hit */
n = *bp;
bp += 3 + n;
}
nitems = bp - cx->selectBuf;
}
retBytes = nitems * __GLX_SIZE_CARD32;
retBuffer = (GLubyte *) cx->selectBuf;
__GLX_SWAP_INT_ARRAY((GLbyte *) retBuffer, nitems);
cx->renderMode = newMode;
break;
}
/*
** First reply is the number of elements returned in the feedback or
** selection array, as per the API for glRenderMode itself.
*/
noChangeAllowed:;
reply = (xGLXRenderModeReply) {
.type = X_Reply,
.sequenceNumber = client->sequence,
.length = nitems,
.retval = retval,
.size = nitems,
.newMode = newMode
};
__GLX_SWAP_SHORT(&reply.sequenceNumber);
__GLX_SWAP_INT(&reply.length);
__GLX_SWAP_INT(&reply.retval);
__GLX_SWAP_INT(&reply.size);
__GLX_SWAP_INT(&reply.newMode);
WriteToClient(client, sz_xGLXRenderModeReply, &reply);
if (retBytes) {
WriteToClient(client, retBytes, retBuffer);
}
return Success;
}
int
__glXDispSwap_Flush(__GLXclientState * cl, GLbyte * pc)
{
ClientPtr client = cl->client;
__GLXcontext *cx;
int error;
__GLX_DECLARE_SWAP_VARIABLES;
REQUEST_SIZE_MATCH(xGLXSingleReq);
__GLX_SWAP_INT(&((xGLXSingleReq *) pc)->contextTag);
cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
if (!cx) {
return error;
}
glFlush();
return Success;
}
/* Tesselates a high order rectangular patch into single triangles using gl evaluators
*
* The problem is that OpenGL does not offer a direct way to return the tesselated primitives,
* and they can't be sent off for rendering directly either. Tesselating is slow, so we want
* to cache the patches in a vertex buffer. But more importantly, gl can't bind generated
* attributes to numbered shader attributes, so we have to store them and rebind them as needed
* in drawprim.
*
* To read back, the opengl feedback mode is used. This creates a problem because we want
* untransformed, unlit vertices, but feedback runs everything through transform and lighting.
* Thus disable lighting and set identity matrices to get unmodified colors and positions.
* To overcome clipping find the biggest x, y and z values of the vertices in the patch and scale
* them to [-1.0;+1.0] and set the viewport up to scale them back.
*
* Normals are more tricky: Draw white vertices with 3 directional lights, and calculate the
* resulting colors back to the normals.
*
* NOTE: This function activates a context for blitting, modifies matrices & viewport, but
* does not restore it because normally a draw follows immediately afterwards. The caller is
* responsible of taking care that either the gl states are restored, or the context activated
* for drawing to reset the lastWasBlit flag.
*/
HRESULT tesselate_rectpatch(IWineD3DDeviceImpl *This,
struct WineD3DRectPatch *patch) {
unsigned int i, j, num_quads, out_vertex_size, buffer_size, d3d_out_vertex_size;
float max_x = 0.0f, max_y = 0.0f, max_z = 0.0f, neg_z = 0.0f;
struct wined3d_stream_info stream_info;
struct wined3d_stream_info_element *e;
struct wined3d_context *context;
const BYTE *data;
const WINED3DRECTPATCH_INFO *info = &patch->RectPatchInfo;
DWORD vtxStride;
GLenum feedback_type;
GLfloat *feedbuffer;
/* Simply activate the context for blitting. This disables all the things we don't want and
* takes care of dirtifying. Dirtifying is preferred over pushing / popping, since drawing the
* patch (as opposed to normal draws) will most likely need different changes anyway. */
context = context_acquire(This, NULL, CTXUSAGE_BLIT);
/* First, locate the position data. This is provided in a vertex buffer in the stateblock.
* Beware of vbos
*/
device_stream_info_from_declaration(This, FALSE, &stream_info, NULL);
e = &stream_info.elements[WINED3D_FFP_POSITION];
if (e->buffer_object)
{
struct wined3d_buffer *vb;
vb = (struct wined3d_buffer *)This->stateBlock->streamSource[e->stream_idx];
e->data = (BYTE *)((unsigned long)e->data + (unsigned long)buffer_get_sysmem(vb));
}
vtxStride = e->stride;
data = e->data +
vtxStride * info->Stride * info->StartVertexOffsetHeight +
vtxStride * info->StartVertexOffsetWidth;
/* Not entirely sure about what happens with transformed vertices */
if (stream_info.position_transformed) FIXME("Transformed position in rectpatch generation\n");
if(vtxStride % sizeof(GLfloat)) {
/* glMap2f reads vertex sizes in GLfloats, the d3d stride is in bytes.
* I don't see how the stride could not be a multiple of 4, but make sure
* to check it
*/
ERR("Vertex stride is not a multiple of sizeof(GLfloat)\n");
}
if(info->Basis != WINED3DBASIS_BEZIER) {
FIXME("Basis is %s, how to handle this?\n", debug_d3dbasis(info->Basis));
}
if(info->Degree != WINED3DDEGREE_CUBIC) {
FIXME("Degree is %s, how to handle this?\n", debug_d3ddegree(info->Degree));
}
/* First, get the boundary cube of the input data */
for(j = 0; j < info->Height; j++) {
for(i = 0; i < info->Width; i++) {
const float *v = (const float *)(data + vtxStride * i + vtxStride * info->Stride * j);
if(fabs(v[0]) > max_x) max_x = fabs(v[0]);
if(fabs(v[1]) > max_y) max_y = fabs(v[1]);
if(fabs(v[2]) > max_z) max_z = fabs(v[2]);
if(v[2] < neg_z) neg_z = v[2];
}
}
/* This needs some improvements in the vertex decl code */
FIXME("Cannot find data to generate. Only generating position and normals\n");
patch->has_normals = TRUE;
patch->has_texcoords = FALSE;
ENTER_GL();
glMatrixMode(GL_PROJECTION);
checkGLcall("glMatrixMode(GL_PROJECTION)");
glLoadIdentity();
checkGLcall("glLoadIndentity()");
glScalef(1.0f / (max_x), 1.0f / (max_y), max_z == 0.0f ? 1.0f : 1.0f / (2.0f * max_z));
glTranslatef(0.0f, 0.0f, 0.5f);
checkGLcall("glScalef");
glViewport(-max_x, -max_y, 2 * (max_x), 2 * (max_y));
checkGLcall("glViewport");
/* Some states to take care of. If we're in wireframe opengl will produce lines, and confuse
* our feedback buffer parser
*/
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
checkGLcall("glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)");
IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_FILLMODE));
if(patch->has_normals) {
static const GLfloat black[] = {0.0f, 0.0f, 0.0f, 0.0f};
static const GLfloat red[] = {1.0f, 0.0f, 0.0f, 0.0f};
static const GLfloat green[] = {0.0f, 1.0f, 0.0f, 0.0f};
static const GLfloat blue[] = {0.0f, 0.0f, 1.0f, 0.0f};
static const GLfloat white[] = {1.0f, 1.0f, 1.0f, 1.0f};
glEnable(GL_LIGHTING);
checkGLcall("glEnable(GL_LIGHTING)");
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, black);
checkGLcall("glLightModel for MODEL_AMBIENT");
IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_AMBIENT));
for (i = 3; i < context->gl_info->limits.lights; ++i)
{
glDisable(GL_LIGHT0 + i);
checkGLcall("glDisable(GL_LIGHT0 + i)");
IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(i));
}
IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(0));
glLightfv(GL_LIGHT0, GL_DIFFUSE, red);
glLightfv(GL_LIGHT0, GL_SPECULAR, black);
glLightfv(GL_LIGHT0, GL_AMBIENT, black);
glLightfv(GL_LIGHT0, GL_POSITION, red);
glEnable(GL_LIGHT0);
checkGLcall("Setting up light 1");
IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(1));
glLightfv(GL_LIGHT1, GL_DIFFUSE, green);
glLightfv(GL_LIGHT1, GL_SPECULAR, black);
glLightfv(GL_LIGHT1, GL_AMBIENT, black);
glLightfv(GL_LIGHT1, GL_POSITION, green);
glEnable(GL_LIGHT1);
checkGLcall("Setting up light 2");
IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(2));
glLightfv(GL_LIGHT2, GL_DIFFUSE, blue);
glLightfv(GL_LIGHT2, GL_SPECULAR, black);
glLightfv(GL_LIGHT2, GL_AMBIENT, black);
glLightfv(GL_LIGHT2, GL_POSITION, blue);
glEnable(GL_LIGHT2);
checkGLcall("Setting up light 3");
IWineD3DDeviceImpl_MarkStateDirty(This, STATE_MATERIAL);
IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_COLORVERTEX));
glDisable(GL_COLOR_MATERIAL);
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, black);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, black);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, white);
checkGLcall("Setting up materials");
}
/* Enable the needed maps.
* GL_MAP2_VERTEX_3 is needed for positional data.
* GL_AUTO_NORMAL to generate normals from the position. Do not use GL_MAP2_NORMAL.
* GL_MAP2_TEXTURE_COORD_4 for texture coords
*/
num_quads = ceilf(patch->numSegs[0]) * ceilf(patch->numSegs[1]);
out_vertex_size = 3 /* position */;
d3d_out_vertex_size = 3;
glEnable(GL_MAP2_VERTEX_3);
if(patch->has_normals && patch->has_texcoords) {
FIXME("Texcoords not handled yet\n");
feedback_type = GL_3D_COLOR_TEXTURE;
out_vertex_size += 8;
d3d_out_vertex_size += 7;
glEnable(GL_AUTO_NORMAL);
glEnable(GL_MAP2_TEXTURE_COORD_4);
} else if(patch->has_texcoords) {
FIXME("Texcoords not handled yet\n");
feedback_type = GL_3D_COLOR_TEXTURE;
out_vertex_size += 7;
d3d_out_vertex_size += 4;
glEnable(GL_MAP2_TEXTURE_COORD_4);
} else if(patch->has_normals) {
feedback_type = GL_3D_COLOR;
out_vertex_size += 4;
d3d_out_vertex_size += 3;
glEnable(GL_AUTO_NORMAL);
} else {
feedback_type = GL_3D;
}
checkGLcall("glEnable vertex attrib generation");
buffer_size = num_quads * out_vertex_size * 2 /* triangle list */ * 3 /* verts per tri */
+ 4 * num_quads /* 2 triangle markers per quad + num verts in tri */;
feedbuffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, buffer_size * sizeof(float) * 8);
glMap2f(GL_MAP2_VERTEX_3,
0.0f, 1.0f, vtxStride / sizeof(float), info->Width,
0.0f, 1.0f, info->Stride * vtxStride / sizeof(float), info->Height,
(const GLfloat *)data);
checkGLcall("glMap2f");
if(patch->has_texcoords) {
glMap2f(GL_MAP2_TEXTURE_COORD_4,
0.0f, 1.0f, vtxStride / sizeof(float), info->Width,
0.0f, 1.0f, info->Stride * vtxStride / sizeof(float), info->Height,
(const GLfloat *)data);
checkGLcall("glMap2f");
}
glMapGrid2f(ceilf(patch->numSegs[0]), 0.0f, 1.0f, ceilf(patch->numSegs[1]), 0.0f, 1.0f);
checkGLcall("glMapGrid2f");
glFeedbackBuffer(buffer_size * 2, feedback_type, feedbuffer);
checkGLcall("glFeedbackBuffer");
glRenderMode(GL_FEEDBACK);
glEvalMesh2(GL_FILL, 0, ceilf(patch->numSegs[0]), 0, ceilf(patch->numSegs[1]));
checkGLcall("glEvalMesh2");
i = glRenderMode(GL_RENDER);
if(i == -1) {
LEAVE_GL();
ERR("Feedback failed. Expected %d elements back\n", buffer_size);
HeapFree(GetProcessHeap(), 0, feedbuffer);
context_release(context);
return WINED3DERR_DRIVERINTERNALERROR;
} else if(i != buffer_size) {
LEAVE_GL();
ERR("Unexpected amount of elements returned. Expected %d, got %d\n", buffer_size, i);
HeapFree(GetProcessHeap(), 0, feedbuffer);
context_release(context);
return WINED3DERR_DRIVERINTERNALERROR;
} else {
TRACE("Got %d elements as expected\n", i);
}
HeapFree(GetProcessHeap(), 0, patch->mem);
patch->mem = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, num_quads * 6 * d3d_out_vertex_size * sizeof(float) * 8);
i = 0;
for(j = 0; j < buffer_size; j += (3 /* num verts */ * out_vertex_size + 2 /* tri marker */)) {
if(feedbuffer[j] != GL_POLYGON_TOKEN) {
ERR("Unexpected token: %f\n", feedbuffer[j]);
continue;
}
if(feedbuffer[j + 1] != 3) {
ERR("Unexpected polygon: %f corners\n", feedbuffer[j + 1]);
continue;
}
/* Somehow there are different ideas about back / front facing, so fix up the
* vertex order
*/
patch->mem[i + 0] = feedbuffer[j + out_vertex_size * 2 + 2]; /* x, triangle 2 */
patch->mem[i + 1] = feedbuffer[j + out_vertex_size * 2 + 3]; /* y, triangle 2 */
patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 2 + 4] - 0.5f) * 4.0f * max_z; /* z, triangle 3 */
if(patch->has_normals) {
patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 2 + 5];
patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 2 + 6];
patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 2 + 7];
}
i += d3d_out_vertex_size;
patch->mem[i + 0] = feedbuffer[j + out_vertex_size * 1 + 2]; /* x, triangle 2 */
patch->mem[i + 1] = feedbuffer[j + out_vertex_size * 1 + 3]; /* y, triangle 2 */
patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 1 + 4] - 0.5f) * 4.0f * max_z; /* z, triangle 2 */
if(patch->has_normals) {
patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 1 + 5];
patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 1 + 6];
patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 1 + 7];
}
i += d3d_out_vertex_size;
patch->mem[i + 0] = feedbuffer[j + out_vertex_size * 0 + 2]; /* x, triangle 1 */
patch->mem[i + 1] = feedbuffer[j + out_vertex_size * 0 + 3]; /* y, triangle 1 */
patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 0 + 4] - 0.5f) * 4.0f * max_z; /* z, triangle 1 */
if(patch->has_normals) {
patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 0 + 5];
patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 0 + 6];
patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 0 + 7];
}
i += d3d_out_vertex_size;
}
if(patch->has_normals) {
/* Now do the same with reverse light directions */
static const GLfloat x[] = {-1.0f, 0.0f, 0.0f, 0.0f};
static const GLfloat y[] = { 0.0f, -1.0f, 0.0f, 0.0f};
static const GLfloat z[] = { 0.0f, 0.0f, -1.0f, 0.0f};
glLightfv(GL_LIGHT0, GL_POSITION, x);
glLightfv(GL_LIGHT1, GL_POSITION, y);
glLightfv(GL_LIGHT2, GL_POSITION, z);
checkGLcall("Setting up reverse light directions");
glRenderMode(GL_FEEDBACK);
checkGLcall("glRenderMode(GL_FEEDBACK)");
glEvalMesh2(GL_FILL, 0, ceilf(patch->numSegs[0]), 0, ceilf(patch->numSegs[1]));
checkGLcall("glEvalMesh2");
i = glRenderMode(GL_RENDER);
checkGLcall("glRenderMode(GL_RENDER)");
i = 0;
for(j = 0; j < buffer_size; j += (3 /* num verts */ * out_vertex_size + 2 /* tri marker */)) {
if(feedbuffer[j] != GL_POLYGON_TOKEN) {
ERR("Unexpected token: %f\n", feedbuffer[j]);
continue;
}
if(feedbuffer[j + 1] != 3) {
ERR("Unexpected polygon: %f corners\n", feedbuffer[j + 1]);
continue;
}
if(patch->mem[i + 3] == 0.0f)
patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 2 + 5];
if(patch->mem[i + 4] == 0.0f)
patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 2 + 6];
if(patch->mem[i + 5] == 0.0f)
patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 2 + 7];
normalize_normal(patch->mem + i + 3);
i += d3d_out_vertex_size;
if(patch->mem[i + 3] == 0.0f)
patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 1 + 5];
if(patch->mem[i + 4] == 0.0f)
patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 1 + 6];
if(patch->mem[i + 5] == 0.0f)
patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 1 + 7];
normalize_normal(patch->mem + i + 3);
i += d3d_out_vertex_size;
if(patch->mem[i + 3] == 0.0f)
patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 0 + 5];
if(patch->mem[i + 4] == 0.0f)
patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 0 + 6];
if(patch->mem[i + 5] == 0.0f)
patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 0 + 7];
normalize_normal(patch->mem + i + 3);
i += d3d_out_vertex_size;
}
}
glDisable(GL_MAP2_VERTEX_3);
glDisable(GL_AUTO_NORMAL);
glDisable(GL_MAP2_NORMAL);
glDisable(GL_MAP2_TEXTURE_COORD_4);
checkGLcall("glDisable vertex attrib generation");
LEAVE_GL();
context_release(context);
HeapFree(GetProcessHeap(), 0, feedbuffer);
vtxStride = 3 * sizeof(float);
if(patch->has_normals) {
vtxStride += 3 * sizeof(float);
}
if(patch->has_texcoords) {
vtxStride += 4 * sizeof(float);
}
memset(&patch->strided, 0, sizeof(patch->strided));
patch->strided.position.format = WINED3DFMT_R32G32B32_FLOAT;
patch->strided.position.lpData = (BYTE *) patch->mem;
patch->strided.position.dwStride = vtxStride;
if(patch->has_normals) {
patch->strided.normal.format = WINED3DFMT_R32G32B32_FLOAT;
patch->strided.normal.lpData = (BYTE *) patch->mem + 3 * sizeof(float) /* pos */;
patch->strided.normal.dwStride = vtxStride;
}
if(patch->has_texcoords) {
patch->strided.texCoords[0].format = WINED3DFMT_R32G32B32A32_FLOAT;
patch->strided.texCoords[0].lpData = (BYTE *) patch->mem + 3 * sizeof(float) /* pos */;
if(patch->has_normals) {
patch->strided.texCoords[0].lpData += 3 * sizeof(float);
}
patch->strided.texCoords[0].dwStride = vtxStride;
}
return WINED3D_OK;
}
int sftcpy(pScene sc,pMesh mesh) {
FILE *file;
GLfloat *fbbuffer;
GLint nvalues;
GLsizei size;
char *ptr,data[128];
static int nfree=0;
/* default */
if ( ddebug ) printf("soft copy\n");
//#ifdef IGL
//#define SFT_EXT "ps"
//#define GL2PS_EXT GL2PS_EPS
//#else
#define SFT_EXT "ps"
//#endif
/* get file name */
strcpy(data,mesh->name);
ptr = (char*)strstr(data,".mesh");
if ( ptr ) *ptr = '\0';
nfree = filnum(data,nfree,SFT_EXT);
if ( nfree == -1 ) return(0);
/* open PS file */
sprintf(data,"%s.%.3d." SFT_EXT,data,nfree);
file = fopen(data,"w");
if ( !file ) {
fprintf(stdout," Unable to open %s\n",data);
return(0);
}
//#ifdef IGL
// // http://www.geuz.org/gl2ps/#tth_sEc3
// GLint buffsize = 0, state = GL2PS_OVERFLOW;
// GLint viewport[4];
//
// glGetIntegerv(GL_VIEWPORT, viewport);
//
// while( state == GL2PS_OVERFLOW ){
// buffsize += 1024*1024;
// gl2psBeginPage (mesh->name, "medit", viewport,
// GL2PS_EXT, GL2PS_BSP_SORT, GL2PS_SILENT |
// GL2PS_OCCLUSION_CULL | GL2PS_BEST_ROOT,
// GL_RGBA, 0, NULL, 0, 0, 0, buffsize,
// file, data );
// drawModel(sc);
// if ( sc->type & S_DECO ) redrawStatusBar(sc);
// state = gl2psEndPage();
// }
//
// fclose(file);
//
//#else
/* size for feedback buffer */
size = 0;
nvalues = -1;
do {
size += 1024*1024;
fbbuffer = (GLfloat *)calloc(1+size,sizeof(GLfloat));
if ( !fbbuffer ) {
return(0);
}
if ( ddebug ) printf("feedback pointer = %p\n",fbbuffer);
/* draw scene in back buffer */
glFeedbackBuffer(size,GL_3D_COLOR,fbbuffer);
(void)glRenderMode(GL_FEEDBACK);
/*
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(0.,0.,-sc->persp->depth, 0.,0.,0., 0.0,1.0,0.0);
setupView(sc);
glMultMatrixf(sc->view->matrix);
glTranslatef(sc->cx,sc->cy,sc->cz);
*/
drawModel(sc);
if ( sc->type & S_DECO ) redrawStatusBar(sc);
/*drawModel(sc);*/
nvalues = (GLint)glRenderMode(GL_RENDER);
if ( nvalues < 0 )
free(fbbuffer);
}
while ( nvalues < 0 );
if ( nvalues < 1 ) {
return(0);
}
else if ( ddebug ) printf("nvalues = %d size = %d\n",nvalues,size);
/* write EPS file */
glutSetCursor(GLUT_CURSOR_WAIT);
headps(file);
coreps(file,size,fbbuffer);
tailps(file);
if ( ddebug ) fprintf(stdout,"%s written\n",data);
glutSetCursor(GLUT_CURSOR_INHERIT);
//#endif
return(1);
}
