read_file()
{
int i,j;
int elem_count;
char *elem_name;
/*** Read in the original PLY object ***/
in_ply = read_ply (stdin);
for (i = 0; i < in_ply->num_elem_types; i++) {
/* prepare to read the i'th list of elements */
elem_name = setup_element_read_ply (in_ply, i, &elem_count);
if (equal_strings ("vertex", elem_name)) {
/* create a vertex list to hold all the vertices */
vlist = (Vertex **) malloc (sizeof (Vertex *) * elem_count);
nverts = elem_count;
/* set up for getting vertex elements */
setup_property_ply (in_ply, &vert_props[0]);
setup_property_ply (in_ply, &vert_props[1]);
setup_property_ply (in_ply, &vert_props[2]);
vert_other = get_other_properties_ply (in_ply,
offsetof(Vertex,other_props));
/* grab all the vertex elements */
for (j = 0; j < elem_count; j++) {
vlist[j] = (Vertex *) malloc (sizeof (Vertex));
get_element_ply (in_ply, (void *) vlist[j]);
}
}
else
get_other_element_ply (in_ply);
}
close_ply (in_ply);
}
void
read_file(void)
{
int i,j;
int elem_count;
char *elem_name;
PlyFile *in_ply;
/*** Read in the original PLY object ***/
in_ply = read_ply (stdin);
for (i = 0; i < in_ply->num_elem_types; i++) {
/* prepare to read the i'th list of elements */
elem_name = setup_element_read_ply (in_ply, i, &elem_count);
if (equal_strings ("vertex", elem_name)) {
/* create a vertex list to hold all the vertices */
vlist = (Vertex **) malloc (sizeof (Vertex *) * elem_count);
nverts = elem_count;
/* set up for getting vertex elements */
setup_property_ply (in_ply, &vert_props[0]);
setup_property_ply (in_ply, &vert_props[1]);
setup_property_ply (in_ply, &vert_props[2]);
for (j = 0; j < in_ply->elems[i]->nprops; j++) {
PlyProperty *prop;
prop = in_ply->elems[i]->props[j];
if (equal_strings ("r", prop->name)) {
setup_property_ply (in_ply, &vert_props[3]);
per_vertex_color = 1;
}
if (equal_strings ("g", prop->name)) {
setup_property_ply (in_ply, &vert_props[4]);
per_vertex_color = 1;
}
if (equal_strings ("b", prop->name)) {
setup_property_ply (in_ply, &vert_props[5]);
per_vertex_color = 1;
}
if (equal_strings ("nx", prop->name)) {
setup_property_ply (in_ply, &vert_props[6]);
has_normals = 1;
}
if (equal_strings ("ny", prop->name)) {
setup_property_ply (in_ply, &vert_props[7]);
has_normals = 1;
}
if (equal_strings ("nz", prop->name)) {
setup_property_ply (in_ply, &vert_props[8]);
has_normals = 1;
}
}
vert_other = get_other_properties_ply (in_ply,
offsetof(Vertex,other_props));
/* grab all the vertex elements */
for (j = 0; j < elem_count; j++) {
vlist[j] = (Vertex *) malloc (sizeof (Vertex));
vlist[j]->r = 1;
vlist[j]->g = 1;
vlist[j]->b = 1;
get_element_ply (in_ply, (void *) vlist[j]);
}
}
else if (equal_strings ("face", elem_name)) {
/* create a list to hold all the face elements */
flist = (Face **) malloc (sizeof (Face *) * elem_count);
nfaces = elem_count;
/* set up for getting face elements */
setup_property_ply (in_ply, &face_props[0]);
face_other = get_other_properties_ply (in_ply,
offsetof(Face,other_props));
/* grab all the face elements */
for (j = 0; j < elem_count; j++) {
flist[j] = (Face *) malloc (sizeof (Face));
get_element_ply (in_ply, (void *) flist[j]);
}
}
else
get_other_element_ply (in_ply);
}
close_ply (in_ply);
free_ply (in_ply);
}
read_file()
{
int i,j;
int elem_count;
char *elem_name;
/*** Read in the original PLY object ***/
in_ply = read_ply (stdin);
/* examine each element type that is in the file (vertex, face) */
for (i = 0; i < in_ply->num_elem_types; i++) {
/* prepare to read the i'th list of elements */
elem_name = setup_element_read_ply (in_ply, i, &elem_count);
if (equal_strings ("vertex", elem_name)) {
/* create a vertex list to hold all the vertices */
vlist = (Vertex **) malloc (sizeof (Vertex *) * elem_count);
nverts = elem_count;
/* set up for getting vertex elements */
/* (we want x,y,z) */
setup_property_ply (in_ply, &vert_props[0]);
setup_property_ply (in_ply, &vert_props[1]);
setup_property_ply (in_ply, &vert_props[2]);
/* we also want normal information if it is there (nx,ny,nz) */
for (j = 0; j < in_ply->elems[i]->nprops; j++) {
PlyProperty *prop;
prop = in_ply->elems[i]->props[j];
if (equal_strings ("nx", prop->name)) {
setup_property_ply (in_ply, &vert_props[3]);
has_nx = 1;
}
if (equal_strings ("ny", prop->name)) {
setup_property_ply (in_ply, &vert_props[4]);
has_ny = 1;
}
if (equal_strings ("nz", prop->name)) {
setup_property_ply (in_ply, &vert_props[5]);
has_nz = 1;
}
}
/* also grab anything else that we don't need to know about */
vert_other = get_other_properties_ply (in_ply,
offsetof(Vertex,other_props));
/* grab the vertex elements and store them in our list */
for (j = 0; j < elem_count; j++) {
vlist[j] = (Vertex *) malloc (sizeof (Vertex));
get_element_ply (in_ply, (void *) vlist[j]);
}
}
else if (equal_strings ("face", elem_name)) {
/* create a list to hold all the face elements */
flist = (Face **) malloc (sizeof (Face *) * elem_count);
nfaces = elem_count;
/* set up for getting face elements */
/* (all we need are vertex indices) */
setup_property_ply (in_ply, &face_props[0]);
face_other = get_other_properties_ply (in_ply,
offsetof(Face,other_props));
/* grab all the face elements and place them in our list */
for (j = 0; j < elem_count; j++) {
flist[j] = (Face *) malloc (sizeof (Face));
get_element_ply (in_ply, (void *) flist[j]);
}
}
else /* all non-vertex and non-face elements are grabbed here */
get_other_element_ply (in_ply);
}
/* close the file */
/* (we won't free up the memory for in_ply because we will use it */
/* to help describe the file that we will write out) */
close_ply (in_ply);
}
bool
TrisetObject::loadPLY(QString flnm)
{
m_position = Vec(0,0,0);
m_scale = Vec(1,1,1);
typedef struct Vertex {
float x,y,z;
float r,g,b;
float nx,ny,nz;
void *other_props; /* other properties */
} Vertex;
typedef struct Face {
unsigned char nverts; /* number of vertex indices in list */
int *verts; /* vertex index list */
void *other_props; /* other properties */
} Face;
PlyProperty vert_props[] = { /* list of property information for a vertex */
{"x", Float32, Float32, offsetof(Vertex,x), 0, 0, 0, 0},
{"y", Float32, Float32, offsetof(Vertex,y), 0, 0, 0, 0},
{"z", Float32, Float32, offsetof(Vertex,z), 0, 0, 0, 0},
{"red", Float32, Float32, offsetof(Vertex,r), 0, 0, 0, 0},
{"green", Float32, Float32, offsetof(Vertex,g), 0, 0, 0, 0},
{"blue", Float32, Float32, offsetof(Vertex,b), 0, 0, 0, 0},
{"nx", Float32, Float32, offsetof(Vertex,nx), 0, 0, 0, 0},
{"ny", Float32, Float32, offsetof(Vertex,ny), 0, 0, 0, 0},
{"nz", Float32, Float32, offsetof(Vertex,nz), 0, 0, 0, 0},
};
PlyProperty face_props[] = { /* list of property information for a face */
{"vertex_indices", Int32, Int32, offsetof(Face,verts),
1, Uint8, Uint8, offsetof(Face,nverts)},
};
/*** the PLY object ***/
int nverts,nfaces;
Vertex **vlist;
Face **flist;
PlyOtherProp *vert_other,*face_other;
bool per_vertex_color = false;
bool has_normals = false;
int i,j;
int elem_count;
char *elem_name;
PlyFile *in_ply;
/*** Read in the original PLY object ***/
FILE *fp = fopen(flnm.toAscii().data(), "rb");
in_ply = read_ply (fp);
for (i = 0; i < in_ply->num_elem_types; i++) {
/* prepare to read the i'th list of elements */
elem_name = setup_element_read_ply (in_ply, i, &elem_count);
if (equal_strings ("vertex", elem_name)) {
/* create a vertex list to hold all the vertices */
vlist = (Vertex **) malloc (sizeof (Vertex *) * elem_count);
nverts = elem_count;
/* set up for getting vertex elements */
setup_property_ply (in_ply, &vert_props[0]);
setup_property_ply (in_ply, &vert_props[1]);
setup_property_ply (in_ply, &vert_props[2]);
for (j = 0; j < in_ply->elems[i]->nprops; j++) {
PlyProperty *prop;
prop = in_ply->elems[i]->props[j];
if (equal_strings ("r", prop->name) ||
equal_strings ("red", prop->name)) {
setup_property_ply (in_ply, &vert_props[3]);
per_vertex_color = true;
}
if (equal_strings ("g", prop->name) ||
equal_strings ("green", prop->name)) {
setup_property_ply (in_ply, &vert_props[4]);
per_vertex_color = true;
}
if (equal_strings ("b", prop->name) ||
equal_strings ("blue", prop->name)) {
setup_property_ply (in_ply, &vert_props[5]);
per_vertex_color = true;
}
if (equal_strings ("nx", prop->name)) {
setup_property_ply (in_ply, &vert_props[6]);
has_normals = true;
}
if (equal_strings ("ny", prop->name)) {
setup_property_ply (in_ply, &vert_props[7]);
has_normals = true;
}
if (equal_strings ("nz", prop->name)) {
setup_property_ply (in_ply, &vert_props[8]);
has_normals = true;
}
}
vert_other = get_other_properties_ply (in_ply,
offsetof(Vertex,other_props));
/* grab all the vertex elements */
for (j = 0; j < elem_count; j++) {
vlist[j] = (Vertex *) malloc (sizeof (Vertex));
get_element_ply (in_ply, (void *) vlist[j]);
}
}
else if (equal_strings ("face", elem_name)) {
/* create a list to hold all the face elements */
flist = (Face **) malloc (sizeof (Face *) * elem_count);
nfaces = elem_count;
/* set up for getting face elements */
setup_property_ply (in_ply, &face_props[0]);
face_other = get_other_properties_ply (in_ply,
offsetof(Face,other_props));
/* grab all the face elements */
for (j = 0; j < elem_count; j++) {
flist[j] = (Face *) malloc (sizeof (Face));
get_element_ply (in_ply, (void *) flist[j]);
}
}
else
get_other_element_ply (in_ply);
}
close_ply (in_ply);
free_ply (in_ply);
if (Global::volumeType() == Global::DummyVolume)
{
float minX, maxX;
float minY, maxY;
float minZ, maxZ;
minX = maxX = vlist[0]->x;
minY = maxY = vlist[0]->y;
minZ = maxZ = vlist[0]->z;
for(int i=0; i<nverts; i++)
{
minX = qMin(minX, vlist[i]->x);
maxX = qMax(maxX, vlist[i]->x);
minY = qMin(minY, vlist[i]->y);
maxY = qMax(maxY, vlist[i]->y);
minZ = qMin(minZ, vlist[i]->z);
maxZ = qMax(maxZ, vlist[i]->z);
}
minX = floor(minX);
minY = floor(minY);
minZ = floor(minZ);
maxX = ceil(maxX);
maxY = ceil(maxY);
maxZ = ceil(maxZ);
int h = maxX-minX+1;
int w = maxY-minY+1;
int d = maxZ-minZ+1;
m_nX = d;
m_nY = w;
m_nZ = h;
m_position = Vec(-minX, -minY, -minZ);
// bool ok;
// QString text = QInputDialog::getText(0,
// "Please enter grid size",
// "Grid Size",
// QLineEdit::Normal,
// QString("%1 %2 %3").\
// arg(d).arg(w).arg(h),
// &ok);
// if (!ok || text.isEmpty())
// {
// QMessageBox::critical(0, "Cannot load PLY", "No grid");
// return false;
// }
//
// int nx=0;
// int ny=0;
// int nz=0;
// QStringList gs = text.split(" ", QString::SkipEmptyParts);
// if (gs.count() > 0) nx = gs[0].toInt();
// if (gs.count() > 1) ny = gs[1].toInt();
// if (gs.count() > 2) nz = gs[2].toInt();
// if (nx > 0 && ny > 0 && nz > 0)
// {
// m_nX = nx;
// m_nY = ny;
// m_nZ = nz;
// }
// else
// {
// QMessageBox::critical(0, "Cannot load triset", "No grid");
// return false;
// }
//
// if (d == m_nX && w == m_nY && h == m_nZ)
// m_position = Vec(-minX, -minY, -minZ);
}
else
{
Vec dim = VolumeInformation::volumeInformation(0).dimensions;
m_nZ = dim.x;
m_nY = dim.y;
m_nX = dim.z;
}
m_vertices.resize(nverts);
for(int i=0; i<nverts; i++)
m_vertices[i] = Vec(vlist[i]->x,
vlist[i]->y,
vlist[i]->z);
m_normals.clear();
if (has_normals)
{
m_normals.resize(nverts);
for(int i=0; i<nverts; i++)
m_normals[i] = Vec(vlist[i]->nx,
vlist[i]->ny,
vlist[i]->nz);
}
m_vcolor.clear();
if (per_vertex_color)
{
m_vcolor.resize(nverts);
for(int i=0; i<nverts; i++)
m_vcolor[i] = Vec(vlist[i]->r/255.0f,
vlist[i]->g/255.0f,
vlist[i]->b/255.0f);
}
// only triangles considered
int ntri=0;
for (int i=0; i<nfaces; i++)
{
if (flist[i]->nverts >= 3)
ntri++;
}
m_triangles.resize(3*ntri);
int tri=0;
for(int i=0; i<nfaces; i++)
{
if (flist[i]->nverts >= 3)
{
m_triangles[3*tri+0] = flist[i]->verts[0];
m_triangles[3*tri+1] = flist[i]->verts[1];
m_triangles[3*tri+2] = flist[i]->verts[2];
tri++;
}
}
m_tvertices.resize(nverts);
m_tnormals.resize(nverts);
m_texValues.resize(nverts);
Vec bmin = m_vertices[0];
Vec bmax = m_vertices[0];
for(int i=0; i<nverts; i++)
{
bmin = StaticFunctions::minVec(bmin, m_vertices[i]);
bmax = StaticFunctions::maxVec(bmax, m_vertices[i]);
}
m_centroid = (bmin + bmax)/2;
m_enclosingBox[0] = Vec(bmin.x, bmin.y, bmin.z);
m_enclosingBox[1] = Vec(bmax.x, bmin.y, bmin.z);
m_enclosingBox[2] = Vec(bmax.x, bmax.y, bmin.z);
m_enclosingBox[3] = Vec(bmin.x, bmax.y, bmin.z);
m_enclosingBox[4] = Vec(bmin.x, bmin.y, bmax.z);
m_enclosingBox[5] = Vec(bmax.x, bmin.y, bmax.z);
m_enclosingBox[6] = Vec(bmax.x, bmax.y, bmax.z);
m_enclosingBox[7] = Vec(bmin.x, bmax.y, bmax.z);
m_pointStep = qMax(1, nverts/50000);
// QMessageBox::information(0, "", QString("%1 %2 %3\n%4 %5"). \
// arg(m_nX).arg(m_nY).arg(m_nZ). \
// arg(m_vertices.count()). \
// arg(m_triangles.count()/3));
m_fileName = flnm;
return true;
}
int CTriangleObj::_loadPLYFile(FILE *fp)
{
Vector3i*& m_pTriangle = (Vector3i*&)m_pPolygon;
int i, j, elem_count, nverts, nfaces;
char *elem_name, buff[200];
Vertex vlist;
Face flist;
PlyOtherProp *vert_other,*face_other;
PlyProperty vert_props[] = { /* list of property information for a vertex */
{"x", Float32, Float32, offsetof(Vertex,x), 0, 0, 0, 0},
{"y", Float32, Float32, offsetof(Vertex,y), 0, 0, 0, 0},
{"z", Float32, Float32, offsetof(Vertex,z), 0, 0, 0, 0},
{"nx", Float32, Float32, offsetof(Vertex,nx), 0, 0, 0, 0},
{"ny", Float32, Float32, offsetof(Vertex,ny), 0, 0, 0, 0},
{"nz", Float32, Float32, offsetof(Vertex,nz), 0, 0, 0, 0},
};
char *elem_names[] = { /* list of the kinds of elements in the user's object */
"vertex", "face"
};
PlyProperty face_props[] = { /* list of property information for a face */
{"vertex_indices", Int32, Int32, offsetof(Face,verts), 1, Uint8, Uint8, offsetof(Face,nverts)},
};
/*** Read in the original PLY object ***/
Free();
PlyFile *in_ply = read_ply (fp);
if (in_ply==NULL) return 0;
for (i = 0; i < in_ply->num_elem_types; i++){
/* prepare to read the i'th list of elements */
elem_name = setup_element_read_ply (in_ply, i, &elem_count);
if (equal_strings ("vertex", elem_name)){
/* create a vertex list to hold all the vertices */
m_nVertexCount = nverts = elem_count;
m_pVertex = new Vector3d [m_nVertexCount];
assert(m_pVertex!=NULL);
/* set up for getting vertex elements */
setup_property_ply (in_ply, &vert_props[0]);
setup_property_ply (in_ply, &vert_props[1]);
setup_property_ply (in_ply, &vert_props[2]);
vert_other = get_other_properties_ply (in_ply, offsetof(Vertex,other_props));
/* grab all the vertex elements */
for (j = 0; j < elem_count; j++) {
get_element_ply (in_ply, (void *) &vlist);
Vector3d *p = &m_pVertex[j];
p->x = vlist.x;
p->y = vlist.y;
p->z = vlist.z;
}
}
else if (equal_strings ("face", elem_name)) {
m_nPolygonCount = nfaces = elem_count;
/* create a list to hold all the face elements */
m_pTriangle = new Vector3i[m_nPolygonCount];
assert(m_pTriangle!=NULL);
/* set up for getting face elements */
setup_property_ply (in_ply, &face_props[0]);
face_other = get_other_properties_ply (in_ply, offsetof(Face,other_props));
/* grab all the face elements */
for (j = 0; j < elem_count; j++) {
get_element_ply (in_ply, (void *) &flist);
if (flist.nverts !=3){
sprintf(buff, "Found a face with %d vertices!\n", (int)flist.nverts);
puts(buff);
}
Vector3i *ptri = &m_pTriangle[j];
ptri->x = flist.verts[0];
ptri->y = flist.verts[2];
ptri->z = flist.verts[1];
}
}
else if (equal_strings ("tristrips", elem_name)) {
int *ibuff = _readTriangleStrip(fp, elem_count);
m_pTriangle=_parseStrip2Triangles(ibuff, elem_count, m_nPolygonCount);
delete [] ibuff;
}
else{
get_other_element_ply (in_ply);
}
}
close_ply (in_ply);
return 1;
}