developer/Samples/NET 4.6/Samples for Parallel/Raytracer/Raytracer_CSharp/Plane.cs

   1 //--------------------------------------------------------------------------
   2 //
   3 //  Copyright (c) Microsoft Corporation.  All rights reserved.
   4 //
   5 //  File: Plane.cs
   6 //
   7 //--------------------------------------------------------------------------
   8
   9 namespace Microsoft.ParallelComputingPlatform.ParallelExtensions.Samples
  10 {
  11     class Plane : SceneObject
  12     {
  13         public Vector Norm;
  14         public double Offset;
  15
  16         public Plane(Vector norm, double offset, Surface surface) : base(surface) { Norm = norm; Offset = offset; }
  17
  18         public override ISect Intersect(Ray ray)
  19         {
  20             double denom = Vector.Dot(Norm, ray.Dir);
  21             if (denom > 0) return ISect.Null;
  22             return new ISect(this, ray, (Vector.Dot(Norm, ray.Start) + Offset) / (-denom));
  23         }
  24
  25         public override Vector Normal(Vector pos)
  26         {
  27             return Norm;
  28         }
  29     }
  30 }