X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fscene.cpp;h=3933599ba5c63f13307d1c755ba0cd9323842a1b;hp=7896d23d6246830d0f1716beaf830a0cff4e8665;hb=6a045019fbd68738b77849629e6dfd3dfd9a4d93;hpb=802832425b02be7b3ccb7d585fe63f4b68b5275f

diff --git a/source/scene.cpp b/source/scene.cpp
index 7896d23d..3933599b 100644
--- a/source/scene.cpp
+++ b/source/scene.cpp
@@ -15,49 +15,60 @@ Scene::~Scene()
 		delete *i;
 }
 
-void Scene::render(const Tag &tag) const
-{
-	Renderer renderer(0);
-	render(renderer, tag);
-}
-
-void Scene::setup_frustum(const Renderer &renderer) const
+bool Scene::setup_frustum(const Renderer &renderer) const
 {
 	const Camera *camera = renderer.get_camera();
 	if(!camera)
-		return;
-
-	float y = tan(camera->get_field_of_view()/2.0f);
-	float s = sqrt(y*y+1);
-	frustum_edges[0] = Vector3(0, 1/s, y/s);
-	frustum_edges[1] = Vector3(0, -1/s, y/s);
+		return false;
 
-	float x = y*camera->get_aspect();
-	s = sqrt(x*x+1);
-	frustum_edges[2] = Vector3(1/s, 0, x/s);
-	frustum_edges[3] = Vector3(-1/s, 0, x/s);
+	culling_matrix = renderer.get_matrix();
+
+	if(camera->is_orthographic())
+	{
+		float h = camera->get_orthographic_height();
+		frustum_edges[0] = Vector4(0, 1, 0, -h);
+		frustum_edges[1] = Vector4(0, -1, 0, -h);
+
+		float w = camera->get_orthographic_width();
+		frustum_edges[2] = Vector4(1, 0, 0, -w);
+		frustum_edges[3] = Vector4(-1, 0, 0, -w);
+	}
+	else
+	{
+		float y = tan(camera->get_field_of_view()/2.0f);
+		float s = sqrt(y*y+1);
+		frustum_edges[0] = Vector4(0, 1/s, y/s, 0);
+		frustum_edges[1] = Vector4(0, -1/s, y/s, 0);
+
+		float x = y*camera->get_aspect();
+		s = sqrt(x*x+1);
+		frustum_edges[2] = Vector4(1/s, 0, x/s, 0);
+		frustum_edges[3] = Vector4(-1/s, 0, x/s, 0);
+	}
+
+	frustum_edges[4] = Vector4(0, 0, -1, -camera->get_far_clip());
+	frustum_edges[5] = Vector4(0, 0, 1, camera->get_near_clip());
+
+	return true;
 }
 
-bool Scene::frustum_cull(const Renderer &renderer, const Renderable &renderable) const
+bool Scene::frustum_cull(const Renderable &renderable) const
 {
 	const Matrix *matrix = renderable.get_matrix();
 	const Geometry::BoundingSphere<float, 3> *bsphere = renderable.get_bounding_sphere();
-	const Camera *camera = renderer.get_camera();
-	if(!matrix || !bsphere || !camera)
+	if(!matrix || !bsphere)
 		return false;
 
-	Matrix mvm = camera->get_matrix()**matrix;
-	float n = camera->get_near_clip();
-	float f = camera->get_far_clip();
-
-	Vector3 center = mvm*bsphere->get_center();
-	float radius = bsphere->get_radius();
+	Vector4 center = culling_matrix*(*matrix*compose(bsphere->get_center(), 1.0f));
+	Vector4 x_axis = *matrix*Vector4(bsphere->get_radius(), 0.0f, 0.0f, 0.0f);
+	float radius_sq = inner_product(x_axis, x_axis);
 
-	if(center.z-radius>-n || center.z+radius<-f)
-		return true;
-	for(unsigned i=0; i<4; ++i)
-		if(dot(center, frustum_edges[i])>radius)
+	for(unsigned i=0; i<6; ++i)
+	{
+		float distance = inner_product(center, frustum_edges[i]);
+		if(distance>0 && distance*distance>radius_sq)
 			return true;
+	}
 
 	return false;
 }