public static BoxFaceDesc GetFaceClosestToPoint(Vector3 point, Vector3 boxCenter, Vector3 boxSize, Quaternion boxRotation)
{
float minDist = float.MaxValue;
Plane bestPlane = new Plane();
BoxFace bestFace = BoxFace.Front;
var allFaces = AllBoxFaces;
foreach (var face in allFaces)
{
Plane facePlane = BoxMath.CalcBoxFacePlane(boxCenter, boxSize, boxRotation, face);
float dist = facePlane.GetAbsDistanceToPoint(point);
if (dist < minDist)
{
bestFace = face;
bestPlane = facePlane;
minDist = dist;
}
}
return(new BoxFaceDesc()
{
Face = bestFace,
Plane = bestPlane,
Center = BoxMath.CalcBoxFaceCenter(boxCenter, boxSize, boxRotation, bestFace)
});
}
public bool Initialize(GameObject gameObject)
{
if (gameObject == null || _gameObject != null)
{
return(false);
}
Mesh mesh = gameObject.GetMesh();
Sprite sprite = gameObject.GetSprite();
if (mesh == null && sprite == null)
{
return(false);
}
bool useMesh = true;
if (mesh == null)
{
useMesh = false;
}
RTMesh rtMesh = null;
if (useMesh)
{
Renderer meshRenderer = gameObject.GetMeshRenderer();
if (meshRenderer == null || !meshRenderer.enabled)
{
useMesh = false;
}
rtMesh = RTMeshDb.Get.GetRTMesh(mesh);
if (rtMesh == null)
{
useMesh = false;
}
}
if (rtMesh == null && sprite == null)
{
return(false);
}
List <AABB> vertOverlapAABBs = BuildVertOverlapAABBs(gameObject, useMesh ? null : sprite, useMesh ? rtMesh : null);
if (vertOverlapAABBs.Count == 0)
{
return(false);
}
AABB modelAABB = useMesh ? rtMesh.AABB : ObjectBounds.CalcSpriteModelAABB(gameObject);
var aabbFaces = BoxMath.AllBoxFaces;
_gameObject = gameObject;
if (useMesh)
{
foreach (var aabbFace in aabbFaces)
{
AABB overlapAABB = vertOverlapAABBs[(int)aabbFace];
List <Vector3> overlappedVerts = rtMesh.OverlapModelVerts(overlapAABB);
Plane facePlane = BoxMath.CalcBoxFacePlane(modelAABB.Center, modelAABB.Size, Quaternion.identity, aabbFace);
overlappedVerts = facePlane.ProjectAllPoints(overlappedVerts);
_snapAreaBounds[(int)aabbFace] = new AABB(overlappedVerts);
_snapAreaDesc[(int)aabbFace] = BoxMath.GetBoxFaceAreaDesc(_snapAreaBounds[(int)aabbFace].Size, aabbFace);
}
}
else
{
foreach (var aabbFace in aabbFaces)
{
if (aabbFace != BoxFace.Front && aabbFace != BoxFace.Back)
{
AABB overlapAABB = vertOverlapAABBs[(int)aabbFace];
List <Vector3> overlappedVerts = ObjectVertexCollect.CollectModelSpriteVerts(sprite, overlapAABB);
Plane facePlane = BoxMath.CalcBoxFacePlane(modelAABB.Center, modelAABB.Size, Quaternion.identity, aabbFace);
overlappedVerts = facePlane.ProjectAllPoints(overlappedVerts);
_snapAreaBounds[(int)aabbFace] = new AABB(overlappedVerts);
_snapAreaDesc[(int)aabbFace] = BoxMath.GetBoxFaceAreaDesc(_snapAreaBounds[(int)aabbFace].Size, aabbFace);
}
else
{
_snapAreaBounds[(int)aabbFace] = AABB.GetInvalid();
_snapAreaDesc[(int)aabbFace] = BoxFaceAreaDesc.GetInvalid();
}
}
}
return(true);
}
