source/zsortedscene.cpp

   1 #include "camera.h"
   2 #include "renderer.h"
   3 #include "zsortedscene.h"
   4
   5 using namespace std;
   6
   7 namespace Msp {
   8 namespace GL {
   9
  10 ZSortedScene::ZSortedScene():
  11         order(BACK_TO_FRONT),
  12         reference(FURTHEST)
  13 { }
  14
  15 void ZSortedScene::set_order(SortOrder o)
  16 {
  17         order = o;
  18 }
  19
  20 void ZSortedScene::set_reference(DepthReference r)
  21 {
  22         reference = r;
  23 }
  24
  25 void ZSortedScene::render(Renderer &renderer, const Tag &tag) const
  26 {
  27         const Camera *camera = renderer.get_camera();
  28         if(!camera)
  29                 return SimpleScene::render(renderer, tag);
  30
  31         const Matrix &view_matrix = camera->get_matrix();
  32
  33         std::vector<DepthRenderable> sorted_renderables;
  34         sorted_renderables.reserve(renderables.size());
  35
  36         float radius_factor = 1.0f-reference;
  37         float sign = order*2.0f-1.0f;
  38
  39         setup_cullers(renderer);
  40         for(RenderableSet::const_iterator i=renderables.begin(); i!=renderables.end(); ++i)
  41                 if(!cull(renderer, **i))
  42                 {
  43                         float z = 0;
  44                         if(const Matrix *model_matrix = (*i)->get_matrix())
  45                         {
  46                                 if(const Geometry::BoundingSphere<float, 3> *bsphere = (*i)->get_bounding_sphere())
  47                                         z = (view_matrix**model_matrix*Vector4(bsphere->get_center(), 1.0f)).z+bsphere->get_radius()*radius_factor;
  48                                 else
  49                                         z = (view_matrix**model_matrix*Vector4(0.0f, 0.0f, 0.0f, 1.0f)).z;
  50                         }
  51                         sorted_renderables.push_back(DepthRenderable(z*sign, *i));
  52                 }
  53
  54         sort(sorted_renderables.begin(), sorted_renderables.end());
  55
  56         for(vector<DepthRenderable>::const_iterator i=sorted_renderables.begin(); i!=sorted_renderables.end(); ++i)
  57                 i->renderable->render(renderer, tag);
  58 }
  59
  60
  61 ZSortedScene::DepthRenderable::DepthRenderable(float d, const Renderable *r):
  62         depth(d),
  63         renderable(r)
  64 { }
  65
  66 } // namespace GL
  67 } // namespace Msp