| public abstract GetTriangle ( int triangleIndex, Microsoft.Xna.Framework.Vector3 &v1, Microsoft.Xna.Framework.Vector3 &v2, Microsoft.Xna.Framework.Vector3 &v3 ) : void | ||
| triangleIndex | int | First index of a triangle's vertices in the index buffer. |
| v1 | Microsoft.Xna.Framework.Vector3 | First vertex of the triangle. |
| v2 | Microsoft.Xna.Framework.Vector3 | Second vertex of the triangle. |
| v3 | Microsoft.Xna.Framework.Vector3 | Third vertex of the triangle. |
| return | void | |
///<summary>
/// Tests a ray against the triangle mesh.
///</summary>
///<param name="ray">Ray to test against the mesh.</param>
/// <param name="maximumLength">Maximum length of the ray in units of the ray direction's length.</param>
/// <param name="sidedness">Sidedness to apply to the mesh for the ray cast.</param>
///<param name="hits">Hit data for the ray, if any.</param>
///<returns>Whether or not the ray hit the mesh.</returns>
public bool RayCast(Ray ray, float maximumLength, TriangleSidedness sidedness, IList <RayHit> hits)
{
var hitElements = Resources.GetIntList();
tree.GetOverlaps(ray, maximumLength, hitElements);
for (int i = 0; i < hitElements.Count; i++)
{
Vector3 v1, v2, v3;
data.GetTriangle(hitElements[i], out v1, out v2, out v3);
RayHit hit;
if (Toolbox.FindRayTriangleIntersection(ref ray, maximumLength, sidedness, ref v1, ref v2, ref v3, out hit))
{
hits.Add(hit);
}
}
Resources.GiveBack(hitElements);
return(hits.Count > 0);
}
