public static bool IsRayInsectAABB3(Vector3 rayOrigin, Vector3 rayDirection, Vector3 min, Vector3 max, ref GeoInsectPointArrayInfo insect)
{
bool isInsect = GeoLineUtils.IsLineInsectAABB3(rayOrigin, rayDirection + rayOrigin, min, max, ref insect);
if (isInsect)
{
List <Vector3> tmp = new List <Vector3>();
List <Vector3> tmp1 = insect.mHitGlobalPoint.mPointArray;
for (int i = 0; i < tmp1.Count; ++i)
{
Vector3 v = tmp1[i];
if (GeoRayUtils.IsPointInRay3(rayOrigin, rayDirection, ref v))
{
tmp.Add(v);
}
}
if (tmp.Count > 0)
{
insect.mHitGlobalPoint.mPointArray = tmp;
insect.mHitGlobalPoint.mPointArray.Sort((v1, v2) =>
{
return((v1 - rayOrigin).sqrMagnitude.CompareTo((v2 - rayOrigin).sqrMagnitude));
});
}
else
{
insect.mIsIntersect = false;
}
}
return(insect.mIsIntersect);
}
public static bool IsRayInsectAABB2(Vector2 rayOrigin, Vector2 rayDirection, Vector2 min, Vector2 max, ref GeoInsectPointArrayInfo insect)
{
bool isInsect = GeoLineUtils.IsLineInsectAABB2(rayOrigin, rayDirection + rayOrigin, min, max, ref insect);
if (isInsect)
{
List <Vector3> tmp = new List <Vector3>();
foreach (Vector3 v in insect.mHitGlobalPoint.mPointArray)
{
Vector2 v2 = new Vector2(v.x, v.y);
if (GeoRayUtils.IsPointInRay2(rayOrigin, rayDirection, ref v2))
{
tmp.Add(v);
}
}
if (tmp.Count > 0)
{
insect.mHitGlobalPoint.mPointArray = tmp;
}
else
{
insect.mIsIntersect = false;
}
}
return(insect.mIsIntersect);
}
public float IsRayIntersect(Vector2 pos, Vector2 dir)
{
float d = 1e10f;
GeoInsectPointInfo info = new GeoInsectPointInfo();
if (GeoRayUtils.IsRayInsectSegment2(pos, dir, mP1, mP2, ref info))
{
d = info.mLength;
}
info = new GeoInsectPointInfo();
if (GeoRayUtils.IsRayInsectSegment2(pos, dir, mP3, mP2, ref info))
{
d = Math.Min(d, info.mLength);
}
info = new GeoInsectPointInfo();
if (GeoRayUtils.IsRayInsectSegment2(pos, dir, mP1, mP4, ref info))
{
d = Math.Min(d, info.mLength);
}
info = new GeoInsectPointInfo();
if (GeoRayUtils.IsRayInsectSegment2(pos, dir, mP3, mP4, ref info))
{
d = Math.Min(d, info.mLength);
}
return(d);
}
public bool IsIntersect(ref GeoRay2 dist, ref GeoInsectPointArrayInfo insect)
{
bool isInsect = GeoRayUtils.IsRayInsectAABB2(dist.mOrigin, dist.mDirection, mAABB2.mMin, mAABB2.mMax, ref insect);
if (isInsect)
{
insect.mHitObject2 = this;
insect.mLength = (GeoUtils.ToVector2(insect.mHitGlobalPoint.mPointArray[0]) - dist.mOrigin).magnitude;
}
return(isInsect);
}
public bool IsIntersect(ref GeoRay3 dist, ref GeoInsectPointArrayInfo insect)
{
GeoInsectPointInfo info = new GeoInsectPointInfo();
bool isInsect = GeoRayUtils.IsRayInsectTriangle3(dist.mOrigin, dist.mDirection, mP1, mP2, mP3, ref info);
if (isInsect)
{
insect.mHitObject2 = this;
insect.mHitGlobalPoint.mPointArray.Add(info.mHitGlobalPoint);
insect.mLength = (info.mHitGlobalPoint - dist.mOrigin).magnitude;
}
return(isInsect);
}
public bool IsIntersect(ref GeoRay2 dist, ref GeoInsectPointArrayInfo insect)
{
GeoInsectPointInfo info = new GeoInsectPointInfo();
bool isInsect = GeoRayUtils.IsRayInsectSegment2(dist.mOrigin, dist.mDirection, mSeg.mP1, mSeg.mP2, ref info);
insect.mIsIntersect = isInsect;
if (isInsect)
{
insect.mHitObject2 = this;
insect.mHitGlobalPoint.mPointArray.Add(info.mHitGlobalPoint);
insect.mLength = (GeoUtils.ToVector2(info.mHitGlobalPoint) - dist.mOrigin).magnitude;
}
return(isInsect);
}
public bool IsIntersect(ref GeoRay2 dist, ref GeoInsectPointArrayInfo insect)
{
bool isInsect = GeoRayUtils.IsRayInsectTriangle2(dist.mOrigin, dist.mDirection, mP1, mP2, mP3, ref insect);
if (isInsect)
{
insect.mHitObject2 = this;
float min = 1e5f;
foreach (Vector3 v in insect.mHitGlobalPoint.mPointArray)
{
float len = (GeoUtils.ToVector2(v) - dist.mOrigin).magnitude;
if (len < min)
{
min = len;
}
}
insect.mLength = min;
}
return(isInsect);
}
public bool GetIntersection(GeoRay2 ray, ref GeoInsectPointArrayInfo intersection, bool occlusion)
{
if (mFlatTreeList.Count == 0)
{
return(false);
}
intersection.mIsIntersect = false;
intersection.mLength = 999999999.0f;
intersection.mHitObject2 = null;
int closer, other;
BVHTraversal[] todo = new BVHTraversal[64];
todo[0] = new BVHTraversal();
int stackptr = 0;
todo[stackptr].mIndex = 0;
todo[stackptr].mLength = -9999999.0f;
while (stackptr >= 0)
{
int ni = todo[stackptr].mIndex;
float near = todo[stackptr].mLength;
stackptr--;
BVHFlatNode2 node = mFlatTreeList[ni];
// 对叶节点做相交测试
if (node.mRightOffset == 0)
{
bool hit = false;
for (int o = 0; o < node.mLeafCount; ++o)
{
GeoInsectPointArrayInfo current = new GeoInsectPointArrayInfo();
BVHObject2 obj = mBuildPrims[(int)node.mStartIndex + o];
hit = obj.IsIntersect(ref ray, ref current);
if (hit)
{
if (occlusion)
{
intersection = current;
return(true);
}
if (current.mLength < intersection.mLength)
{
intersection = current;
}
}
}
}
else
{
closer = ni + 1;
other = ni + (int)node.mRightOffset;
// 对父结点做测试
GeoInsectPointArrayInfo in1 = new GeoInsectPointArrayInfo();
GeoInsectPointArrayInfo in2 = new GeoInsectPointArrayInfo();
bool hitc0 = GeoRayUtils.IsRayInsectAABB2(ray.mOrigin, ray.mDirection, mFlatTreeList[closer].mBox.mMin, mFlatTreeList[closer].mBox.mMax, ref in1);
bool hitc1 = GeoRayUtils.IsRayInsectAABB2(ray.mOrigin, ray.mDirection, mFlatTreeList[other].mBox.mMin, mFlatTreeList[other].mBox.mMax, ref in2);
if (hitc0 && hitc1)
{
float l0 = (GeoUtils.ToVector2(in1.mHitGlobalPoint[0]) - ray.mOrigin).magnitude;
float l2 = (GeoUtils.ToVector2(in2.mHitGlobalPoint[0]) - ray.mOrigin).magnitude;
if (l2 < l0)
{
float temp = l0;
l0 = l2;
l2 = temp;
int itemp = closer;
closer = other;
other = itemp;
}
todo[++stackptr] = new BVHTraversal(other, l2);
todo[++stackptr] = new BVHTraversal(closer, l0);
}
else if (hitc0)
{
float l0 = (GeoUtils.ToVector2(in1.mHitGlobalPoint[0]) - ray.mOrigin).magnitude;
todo[++stackptr] = new BVHTraversal(closer, l0);
}
else if (hitc1)
{
float l2 = (GeoUtils.ToVector2(in2.mHitGlobalPoint[0]) - ray.mOrigin).magnitude;
todo[++stackptr] = new BVHTraversal(other, l2);
}
}
}
if (intersection.mHitObject2 != null)
{
intersection.mHitGlobalPoint.Clear();
intersection.mHitGlobalPoint.Add(ray.mOrigin + ray.mDirection * intersection.mLength);
}
return(intersection.mHitObject2 != null);
}
public static bool IsTriangleInsectRay3(Vector3 p1, Vector3 p2, Vector3 p3, Vector3 rayOrigin, Vector3 rayDirection, ref GeoInsectPointInfo insect)
{
return(GeoRayUtils.IsRayInsectTriangle3(rayOrigin, rayDirection, p1, p2, p3, ref insect));
}
public static bool IsTriangleInsectRay2(Vector2 p1, Vector2 p2, Vector2 p3, Vector2 rayOrigin, Vector2 rayDirection, ref GeoInsectPointInfo insect)
{
return(GeoRayUtils.IsRayInsectLine2(rayOrigin, rayDirection, rayOrigin, rayDirection, ref insect));
}
public static bool IsAABBInsectRay3(Vector3 min, Vector3 max, Vector3 rayOrigin, Vector3 rayDirection, ref GeoInsectPointArrayInfo insect)
{
return(GeoRayUtils.IsRayInsectAABB3(rayOrigin, rayDirection, min, max, ref insect));
}