public GameObjectRayHit RaycastMeshObject(Ray ray, GameObject gameObject)
{
Mesh objectMesh = gameObject.GetMesh();
RTMesh rtMesh = RTMeshDb.Get.GetRTMesh(objectMesh);
if (rtMesh != null)
{
MeshRayHit meshRayHit = rtMesh.Raycast(ray, gameObject.transform.localToWorldMatrix);
if (meshRayHit != null)
{
return(new GameObjectRayHit(ray, gameObject, meshRayHit));
}
}
else
{
// If no RTMesh instance is available, we will cast a ray against
// the object's MeshCollider as a last resort. This is actually useful
// when dealing with static mesh objects. These objects' meshes have
// their 'isReadable' flag set to false and can not be used to create
// an RTMesh instance. Thus a mesh collider is the next best choice.
MeshCollider meshCollider = gameObject.GetComponent <MeshCollider>();
if (meshCollider != null)
{
RaycastHit rayHit;
if (meshCollider.Raycast(ray, out rayHit, float.MaxValue))
{
return(new GameObjectRayHit(ray, rayHit));
}
}
}
return(null);
}
public bool Contains(RTMesh rtMesh)
{
if (rtMesh == null)
{
return(false);
}
return(_meshes.ContainsKey(rtMesh.UnityMesh));
}
public void SetMeshDirty(Mesh unityMesh)
{
RTMesh rtMesh = null;
if (_meshes.TryGetValue(unityMesh, out rtMesh))
{
rtMesh.SetDirty();
}
}
/// <summary>
/// Creates an RTMesh from the passed Unity mesh. The method returns the
/// RTMesh instance or null if the mesh can not be created.
/// </summary>
/// <remarks>
/// The client code is responsible for calling 'BuildTree' for the returned
/// mesh.
/// </remarks>
private RTMesh CreateRTMesh(Mesh unityMesh)
{
RTMesh rtMesh = RTMesh.Create(unityMesh);
if (rtMesh != null)
{
_meshes.Add(unityMesh, rtMesh);
return(rtMesh);
}
else
{
return(null);
}
}
public static List <Vector3> CollectHierarchyVerts(GameObject root, BoxFace collectFace, float collectBoxScale, float collectEps)
{
var meshObjects = root.GetMeshObjectsInHierarchy();
var spriteObjects = root.GetSpriteObjectsInHierarchy();
if (meshObjects.Count == 0 && spriteObjects.Count == 0)
{
return(new List <Vector3>());
}
var boundsQConfig = new ObjectBounds.QueryConfig();
boundsQConfig.ObjectTypes = GameObjectType.Mesh | GameObjectType.Sprite;
OBB hierarchyOBB = ObjectBounds.CalcHierarchyWorldOBB(root, boundsQConfig);
if (!hierarchyOBB.IsValid)
{
return(new List <Vector3>());
}
int faceAxisIndex = BoxMath.GetFaceAxisIndex(collectFace);
Vector3 faceCenter = BoxMath.CalcBoxFaceCenter(hierarchyOBB.Center, hierarchyOBB.Size, hierarchyOBB.Rotation, collectFace);
Vector3 faceNormal = BoxMath.CalcBoxFaceNormal(hierarchyOBB.Center, hierarchyOBB.Size, hierarchyOBB.Rotation, collectFace);
float sizeEps = collectEps * 2.0f;
Vector3 collectAABBSize = hierarchyOBB.Size;
collectAABBSize[faceAxisIndex] = (hierarchyOBB.Size[faceAxisIndex] * collectBoxScale) + sizeEps;
collectAABBSize[(faceAxisIndex + 1) % 3] += sizeEps;
collectAABBSize[(faceAxisIndex + 2) % 3] += sizeEps;
OBB collectOBB = new OBB(faceCenter + faceNormal * (-collectAABBSize[faceAxisIndex] * 0.5f + collectEps), collectAABBSize);
collectOBB.Rotation = hierarchyOBB.Rotation;
var collectedVerts = new List <Vector3>(80);
foreach (var meshObject in meshObjects)
{
Mesh mesh = meshObject.GetMesh();
RTMesh rtMesh = RTMeshDb.Get.GetRTMesh(mesh);
if (rtMesh == null)
{
continue;
}
var verts = rtMesh.OverlapVerts(collectOBB, meshObject.transform);
if (verts.Count != 0)
{
collectedVerts.AddRange(verts);
}
}
foreach (var spriteObject in spriteObjects)
{
var verts = CollectWorldSpriteVerts(spriteObject.GetSprite(), spriteObject.transform, collectOBB);
if (verts.Count != 0)
{
collectedVerts.AddRange(verts);
}
}
return(collectedVerts);
}
public MeshTree(RTMesh mesh)
{
_mesh = mesh;
}
private List <AABB> BuildVertOverlapAABBs(GameObject gameObject, Sprite sprite, RTMesh rtMesh)
{
if (sprite == null && rtMesh == null)
{
return(new List <AABB>());
}
const float overlapAmount = 0.2f;
float halfOverlapAmount = overlapAmount * 0.5f;
AABB modelAABB = sprite != null?ObjectBounds.CalcSpriteModelAABB(gameObject) : rtMesh.AABB;
Vector3 modelAABBSize = modelAABB.Size;
List <BoxFace> modelAABBFaces = BoxMath.AllBoxFaces;
const float sizeEps = 0.001f;
Vector3[] overlapAABBSizes = new Vector3[modelAABBFaces.Count];
overlapAABBSizes[(int)BoxFace.Left] = new Vector3(overlapAmount, modelAABBSize.y + sizeEps, modelAABBSize.z + sizeEps);
overlapAABBSizes[(int)BoxFace.Right] = new Vector3(overlapAmount, modelAABBSize.y + sizeEps, modelAABBSize.z + sizeEps);
overlapAABBSizes[(int)BoxFace.Bottom] = new Vector3(modelAABBSize.x + sizeEps, overlapAmount, modelAABBSize.z + sizeEps);
overlapAABBSizes[(int)BoxFace.Top] = new Vector3(modelAABBSize.x + sizeEps, overlapAmount, modelAABBSize.z + sizeEps);
overlapAABBSizes[(int)BoxFace.Back] = new Vector3(modelAABBSize.x + sizeEps, modelAABBSize.y + sizeEps, overlapAmount);
overlapAABBSizes[(int)BoxFace.Front] = new Vector3(modelAABBSize.x + sizeEps, modelAABBSize.y + sizeEps, overlapAmount);
var overlapAABBs = new List <AABB>();
for (int boxFaceIndex = 0; boxFaceIndex < modelAABBFaces.Count; ++boxFaceIndex)
{
BoxFace modelAABBFace = modelAABBFaces[boxFaceIndex];
Vector3 faceCenter = BoxMath.CalcBoxFaceCenter(modelAABB.Center, modelAABB.Size, Quaternion.identity, modelAABBFace);
Vector3 faceNormal = BoxMath.CalcBoxFaceNormal(modelAABB.Center, modelAABB.Size, Quaternion.identity, modelAABBFace);
Vector3 overlapCenter = faceCenter - faceNormal * halfOverlapAmount;
overlapAABBs.Add(new AABB(overlapCenter, overlapAABBSizes[boxFaceIndex]));
}
return(overlapAABBs);
}
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);
}
