private Color TraceSphere(int lightIndex, ClosestSphere result)
{
pixelColor = result.Sphere.Color;
SetSphereUVProperties(result.Sphere);
ProcessSphereUVTexture(result.Sphere, result.HitNormal);
pixelColor = ComputeLight(pixelColor, result.HitPosition, result.HitNormal, sceneData.Lights[lightIndex]);
return(pixelColor);
}
public ClosestEntityIntersection GetClosestEntity(Ray ray)
{
/* Tree intersection
* HashSet<BoundingBoxNode> nodesToExplore = new HashSet<BoundingBoxNode>();
* double distance = 0.0;
* for(int i = 0; i < scene.BoundingBoxTree.Root.Childs.Count; i++)
* {
* if(BoxIntersection.Intersect(ray, scene.BoundingBoxTree.Root.Childs[i].Box, ref distance))
* {
* System.Console.WriteLine("Root to explore");
* nodesToExplore.Add(scene.BoundingBoxTree.Root.Childs[i]);
* }
* }
*
* while(nodesToExplore.Count > 1)
* {
* foreach (BoundingBoxNode node in nodesToExplore)
* {
* for (int i = 0; i < node.Childs.Count; i++)
* {
* if (BoxIntersection.Intersect(ray, node.Childs[i].Box, ref distance))
* {
* nodesToExplore.Add(node.Childs[i]);
* }
* }
*
* nodesToExplore.Remove(node);
* }
* }
*
* bool intersect = false;
* double distance = 0.0;
* double realDistance = double.PositiveInfinity;
* BoundingBoxNode aabbNode = null;
* List<BoundingBoxNode> closestIntersectedBox = new List<BoundingBoxNode>();
* for(int i = 0; i < scene.aabbNodes.Count; i++)
* {
* if(BoxIntersection.Intersect(ray, scene.aabbNodes[i].Box, ref distance))
* {
* if (distance < realDistance)
* {
* intersect = true;
* aabbNode = scene.aabbNodes[i];
* realDistance = distance;
*
* closestIntersectedBox.Add(scene.aabbNodes[i]);
* }
* }
* }
*
* for (int i = closestIntersectedBox.Count - 1; i >= 0; i--)
* {
* if (closestIntersectedBox[i].IsMesh)
* {
* ClosestTriangle st = GetClosestTriangleIntersectionInList(ray, new List<PotatoMesh>() { closestIntersectedBox[i].Entity as PotatoMesh });
* if (st.IsIntersect) return st;
* }
* else
* {
* ClosestSphere sr = GetClosestSphereIntersectionInList(ray, new List<PotatoSphere>() { closestIntersectedBox[i].Entity as PotatoSphere });
* if (sr.IsIntersect) return sr;
* }
* }
*
* return new ClosestEntityIntersection(new Vector3(), new Vector3(), 0.0, false, true);
*/
ClosestTriangle triangleResult = GetClosestTriangleIntersectionInScene(ray);
ClosestSphere sphereResult = GetClosestSphereIntersectionInScene(ray);
if (!triangleResult.IsIntersect && sphereResult.IsIntersect)
{
return(sphereResult);
}
else if (!sphereResult.IsIntersect && triangleResult.IsIntersect)
{
return(triangleResult);
}
else if (triangleResult.IsIntersect && sphereResult.IsIntersect)
{
if (sphereResult.Distance > triangleResult.Distance)
{
return(triangleResult);
}
else
{
return(sphereResult);
}
}
return(new ClosestEntityIntersection(new Vector3(), new Vector3(), 0.0, false, true));
}
