bool
Bedge :: is_texture_seam()const
{
//this function is under construction
//do not use yet
//fix for skin users
static bool USE_UV = !Config::get_var_bool("SKIN_INHIBIT_UV",false);
if( USE_UV && !UVdata::is_continuous(this)) return true;
if (_f1 && _f2 && !is_patch_boundary())//patches on both sides are the same
{
TexCoordGen* tg = patch()->tex_coord_gen();
if (tg)
{
UVpt tx1A = tg->uv_from_vert(_v1,_f1);
UVpt tx1B = tg->uv_from_vert(_v1,_f2);
UVpt tx2A = tg->uv_from_vert(_v2,_f1);
UVpt tx2B = tg->uv_from_vert(_v2,_f2);
if ((tx1A!=tx1B) || (tx2A!=tx2B)) return true;
}
}
return false;
}
/**********************************************************************
* FlatShadeStripCB:
**********************************************************************/
void
FlatShadeStripCB::faceCB(CBvert* v, CBface* f)
{
// normal
glNormal3dv(f->norm().data());
if (v->has_color()) {
GL_COL(v->color(), alpha*v->alpha());
}
// texture coords
if (_do_texcoords) {
if (_use_auto) { //force automatic
//use spherical text coord gen
glTexCoord2dv(_auto_UV->uv_from_vert(v,f).data());
} else {
// the patch has a texture... try to find
// appropriate texture coordinates...
// use patch's TexCoordGen if possible,
// otherwise use the texture coordinates stored
// on the face (if any):
TexCoordGen* tg = f->patch()->tex_coord_gen();
if (tg)
glTexCoord2dv(tg->uv_from_vert(v,f).data());
else if (UVdata::lookup(f))
glTexCoord2dv(UVdata::get_uv(v,f).data());
}
}
// vertex coords
glVertex3dv(v->loc().data());
}
/**********************************************************************
* SmoothShadeStripCB:
**********************************************************************/
void
SmoothShadeStripCB::faceCB(CBvert* v, CBface* f)
{
using mlib::Wvec;
// normal
Wvec n;
glNormal3dv(f->vert_normal(v,n).data());
if (v->has_color())
GL_COL(v->color(), alpha*v->alpha());
// texture coords
if (do_texcoords) {
// the patch has a texture... try to find
// appropriate texture coordinates...
// use patch's TexCoordGen if possible,
// otherwise use the texture coordinates stored
// on the face (if any):
TexCoordGen* tg = f->patch()->tex_coord_gen();
if (tg)
glTexCoord2dv(tg->uv_from_vert(v,f).data());
else if (UVdata::lookup(f))
glTexCoord2dv(UVdata::get_uv(v,f).data());
}
// vertex coords
glVertex3dv(v->loc().data());
}
/**********************************************************************
* NPRSolidTexCB:
**********************************************************************/
void
NPRSolidTexCB::faceCB(CBvert* v, CBface*f)
{
Wvec n;
f->vert_normal(v,n);
if (!nst_use_vertex_program)
{
if (nst_tex_flag) {
TexCoordGen* tg = f->patch()->tex_coord_gen();
if (tg)
glTexCoord2dv(tg->uv_from_vert(v,f).data());
else if (UVdata::lookup(f))
glTexCoord2dv(UVdata::get_uv(v,f).data());
}
if (nst_paper_flag)
PaperEffect::paper_coord(NDCZpt(v->wloc()).data());
glNormal3dv(n.data());
glVertex3dv(v->loc().data());
}
else
{
if (nst_tex_flag)
{
TexCoordGen* tg = f->patch()->tex_coord_gen();
if (tg)
glTexCoord2dv(tg->uv_from_vert(v,f).data());
else if (UVdata::lookup(f))
glTexCoord2dv(UVdata::get_uv(v,f).data());
}
glNormal3dv(n.data());
glVertex3dv(v->loc().data());
}
}
virtual UVpt get_attrib(CBvert* v, CBface* f)
{
assert(v&&f);
TexCoordGen* tg = f->patch()->tex_coord_gen();
if (tg)
return tg->uv_from_vert(v,f);
else
if (UVdata::lookup(f))
return UVdata::get_uv(v,f);
else
return UVpt(0.0,0.0);
}