|
public GetOverlaps ( Microsoft.Xna.Framework.BoundingBox boundingBox, IList |
||
| boundingBox | Microsoft.Xna.Framework.BoundingBox | Shape to query against the tree. |
| outputOverlappedElements | IList |
Indices of triangles in the index buffer with bounding boxes which are overlapped by the query. |
| Результат | bool | |
public bool GetOverlaps(BoundingBox boundingBox, IList<int> outputOverlappedElements)
{
if (root != null)
{
bool intersects;
root.BoundingBox.Intersects(ref boundingBox, out intersects);
if (intersects)
root.GetOverlaps(ref boundingBox, outputOverlappedElements);
}
return outputOverlappedElements.Count > 0;
}
|
MeshBoundingBoxTree::GetOverlaps ( BoundingFrustum boundingFrustum, IList |
|
|
MeshBoundingBoxTree::GetOverlaps ( BoundingSphere boundingSphere, IList |
|
|
MeshBoundingBoxTree::GetOverlaps ( Microsoft.Xna.Framework.Ray ray, IList |
|
|
MeshBoundingBoxTree::GetOverlaps ( Microsoft.Xna.Framework.Ray ray, float maximumLength, IList |
///<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);
}
