void ComponentDrawFlare::draw (CameraObject* camera)
{
PlaceableObject *placeable = checkedCast<PlaceableObject*>(getOwner());
if (!placeable)
return;
for (DTuint i = 0; i < NUM_FLARES; ++i) {
if (_mat[i].isNull())
continue;
Color c = _mat[i]->getColor();
c.setAFloat(_alpha);
_mat[i]->setColor(c);
}
Vector3 projected_point = camera->projectPoint (placeable->getTranslation());
if (projected_point.z > 1.0F)
return;
Vector3 flare_vec = (Vector3(0.0F, 0.0F, 0.0F) - projected_point) * 2.0F;
DTfloat aspect = System::getRenderer()->getViewportAspect();
DrawBatcherQuads b;
for (DTuint i = 0; i < NUM_FLARES; ++i) {
if (_mat[i].isNull())
continue;
DTfloat size = _size[i];
Matrix4 transform = Matrix4::identity();
transform.setTranslation(projected_point + flare_vec * _pos[i]); // TODO: Why is this backwards?
b.batchBegin (_mat[i].get(), Matrix4::identity(), DrawBatcherQuads::FMT_V | DrawBatcherQuads::FMT_T1 | DrawBatcherQuads::FMT_C);
b.vertex ( transform * Vector3(-size,-size*aspect,0.0F), Texcoord2(0.0F,0.0F), Color(_alpha,_alpha,_alpha,_alpha) );
b.vertex ( transform * Vector3(size,-size*aspect,0.0F), Texcoord2(1.0F,0.0F), Color(_alpha,_alpha,_alpha,_alpha) );
b.vertex ( transform * Vector3(size,size*aspect,0.0F), Texcoord2(1.0F,1.0F), Color(_alpha,_alpha,_alpha,_alpha) );
b.vertex ( transform * Vector3(-size,size*aspect,0.0F), Texcoord2(0.0F,1.0F), Color(_alpha,_alpha,_alpha,_alpha) );
b.batchEnd();
}
b.flush();
}
