public MeshRenderRaycastInfo(Ray worldSpaceRay, MeshRenderable renderer)
{
this.MeshRenderable = renderer;
var invertedModelMatrix = new Matrix(renderer.Transform.ModelMatrix);
invertedModelMatrix.Invert();
this.ModelSpaceRay = new Ray();
ModelSpaceRay.Origin = Vector3
.Transform(worldSpaceRay.Origin, invertedModelMatrix);
ModelSpaceRay.Direction = Vector3
.NormalTransform(worldSpaceRay.Direction, invertedModelMatrix)
.Normalized;
var modelOriginToCenter = ModelSpaceRay.Origin - MeshRenderable.Mesh.Bounds.Center;
var modelDistanceOriginToCenter = modelOriginToCenter.Length;
var modelDistanceOriginToBounds = modelDistanceOriginToCenter - MeshRenderable.Mesh.Bounds.Radius;
if (modelDistanceOriginToBounds < 0)
{
DistanceToBounds = 0;
}
else
{
var modelCenterToBounds = modelOriginToCenter * (modelDistanceOriginToBounds / modelDistanceOriginToCenter);
var worldCenterToBounds = Vector3.NormalTransform(modelCenterToBounds, MeshRenderable.Transform.ModelMatrix);
DistanceToBounds = worldCenterToBounds.Length;
}
}
private MeshRenderRaycastInfo RaycastMeshBounds(MeshRenderable renderer)
{
if (renderer.IsRaytracable == false)
{
return(null);
}
if (renderer.IsEnabled == false)
{
return(null);
}
if (renderer.Mesh == null)
{
return(null);
}
if (renderer.Mesh.Bounds == null)
{
return(null);
}
if (renderer.Mesh.Vertices == null)
{
return(null);
}
if (renderer.SceneObject.Layer.Intersects(_currentLayer) == false)
{
return(null);
}
if (renderer.Mesh.Type != PrimitiveType.Triangles)
{
Log.Warning(renderer.Mesh.Type + " is not supported for raytracing");
return(null);
}
var result = new MeshRenderRaycastInfo(_worldSpaceRay, renderer);
if (renderer.Mesh.Bounds.Sphere.FastRaycast(result.ModelSpaceRay))
{
return(result);
}
else
{
return(null);
}
}
protected override void OnStart()
{
base.OnStart();
SceneObject.Transform.WorldRotation = new Quaternion(Vector3.UnitX, MathF.PIOver2);
_renderer = SceneObject.AddComponent <MeshRenderable>();
_renderer.IsEnabled = true;
var mesh = Plane.Create(2, 2);
_renderer.Mesh = mesh;
_material = _renderer.Material = new Material(null, DiscardFrag, RenderQueue.Opaque);
_material.Color = Vector4.One;
_material.SetTexture("uniform_DiscardTexture", new Texture2("Resources/Textures/1.png", false));
_material.SetTexture("uniform_NormalTexture", new Texture2("Resources/Textures/1.png", true));
_material.MainTexture = new Texture2("Resources/Textures/2.png", false);
_material.SetValue("uniform_DiscardFactor", 0f);
}
