void Graphics3DExtrude::drawQuad(const Pnt2f& p1, const Pnt2f& p2, const Pnt2f& p3, const Pnt2f& p4,
const Vec2f& t1, const Vec2f& t2, const Vec2f& t3, const Vec2f& t4,
const Color4f& color, const TextureObjChunkUnrecPtr Texture,
const Real32& Opacity) const
{
Real32 Alpha( Opacity * getOpacity() * color.alpha());
if(Alpha < 1.0 || Texture->getImage()->hasAlphaChannel())
{
//Setup the Blending equations properly
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
}
if(Texture != NULL)
{
Texture->activate(getDrawEnv());
}
glBegin(GL_QUADS);
glColor4f(color.red(), color.green(), color.blue(), Alpha );
glTexCoord2fv(t1.getValues());
glVertex2fv(p1.getValues());
glTexCoord2fv(t2.getValues());
glVertex2fv(p2.getValues());
glTexCoord2fv(t3.getValues());
glVertex2fv(p3.getValues());
glTexCoord2fv(t4.getValues());
glVertex2fv(p4.getValues());
glEnd();
if(Texture != NULL)
{
Texture->deactivate(getDrawEnv());
}
if(Alpha < 1.0 || Texture->getImage()->hasAlphaChannel())
{
glDisable(GL_BLEND);
}
}
