private bool CreateMeshVertChunkCollection(Mesh mesh)
{
MeshVertexChunkCollection meshVertexChunkCollection = new MeshVertexChunkCollection();
if (!meshVertexChunkCollection.FromMesh(mesh))
{
return(false);
}
_vertexChunkCollections.Add(meshVertexChunkCollection);
_meshToVChunkCollection.Add(mesh, meshVertexChunkCollection);
return(true);
}
protected bool GetWorldPointClosestToInputDevice(Camera focusCamera, IEnumerable <GameObject> gameObjects, out Vector3 point)
{
point = Vector3.zero;
if (gameObjects == null)
{
return(false);
}
if (!RTInputDevice.Get.Device.HasPointer())
{
return(false);
}
Vector2 inputDeviceScreenPt = RTInputDevice.Get.Device.GetPositionYAxisUp();
float minDistSqr = float.MaxValue;
bool foundPoint = false;
foreach (GameObject srcObject in gameObjects)
{
Mesh mesh = srcObject.GetMesh();
if (mesh != null)
{
MeshVertexChunkCollection meshVChunkCollection = MeshVertexChunkCollectionDb.Get[mesh];
if (meshVChunkCollection == null)
{
continue;
}
Matrix4x4 worldMtx = srcObject.transform.localToWorldMatrix;
List <MeshVertexChunk> testChunks = meshVChunkCollection.GetWorldChunksHoveredByPoint(inputDeviceScreenPt, worldMtx, focusCamera);
if (testChunks.Count == 0)
{
MeshVertexChunk closestChunk = meshVChunkCollection.GetWorldVertChunkClosestToScreenPt(inputDeviceScreenPt, worldMtx, focusCamera);
if (closestChunk != null && closestChunk.VertexCount != 0)
{
testChunks.Add(closestChunk);
}
}
foreach (MeshVertexChunk chunk in testChunks)
{
Vector3 worldVert = chunk.GetWorldVertClosestToScreenPt(inputDeviceScreenPt, worldMtx, focusCamera);
Vector2 screenVert = focusCamera.WorldToScreenPoint(worldVert);
float distSqr = (inputDeviceScreenPt - screenVert).sqrMagnitude;
if (distSqr < minDistSqr)
{
minDistSqr = distSqr;
point = worldVert;
foundPoint = true;
}
}
}
else
{
OBB spriteWorldOBB = ObjectBounds.CalcSpriteWorldOBB(srcObject);
if (spriteWorldOBB.IsValid)
{
List <Vector3> obbPoints = spriteWorldOBB.GetCenterAndCornerPoints();
List <Vector2> screenPoints = focusCamera.ConvertWorldToScreenPoints(obbPoints);
int closestPtIndex = Vector2Ex.GetPointClosestToPoint(screenPoints, inputDeviceScreenPt);
if (closestPtIndex >= 0)
{
Vector2 closestPt = screenPoints[closestPtIndex];
float distSqr = (inputDeviceScreenPt - closestPt).sqrMagnitude;
if (distSqr < minDistSqr)
{
minDistSqr = distSqr;
point = obbPoints[closestPtIndex];
foundPoint = true;
}
}
}
}
}
return(foundPoint);
}