85 lines
3.8 KiB
C#
85 lines
3.8 KiB
C#
|
#if UNITY_EDITOR
|
|||
|
|
using UnityEngine;
|
|||
|
|
using System;
|
|||
|
|
using System.Collections.Generic;
|
|||
|
|
|
|||
|
|
namespace GSpawn
|
|||
|
|
{
|
|||
|
|
public class ObjectToObjectSnapData
|
|||
|
|
{
|
|||
|
|
private static Box3DFace[] _allBoxFaces = Box3D.facesArrayCopy;
|
|||
|
|
private static List<AABB> _overlapAABBBuffer = new List<AABB>();
|
|||
|
|
private static List<Vector3> _vector3Buffer = new List<Vector3>();
|
|||
|
|
|
|||
|
|
private AABB[] _snapSocketAABB = new AABB[Enum.GetValues(typeof(Box3DFace)).Length];
|
|||
|
|
|
|||
|
|
public static ObjectToObjectSnapData create(GameObject gameObject)
|
|||
|
|
{
|
|||
|
|
if (gameObject == null) return null;
|
|||
|
|
|
|||
|
|
Mesh mesh = gameObject.getMesh();
|
|||
|
|
Sprite sprite = gameObject.getSprite();
|
|||
|
|
if (mesh == null && sprite == null) return null;
|
|||
|
|
|
|||
|
|
PluginMesh pluginMesh = PluginMeshDb.instance.getPluginMesh(mesh);
|
|||
|
|
if (pluginMesh == null && sprite == null) return null;
|
|||
|
|
|
|||
|
|
bool useMesh = pluginMesh != null;
|
|||
|
|
AABB modelAABB = useMesh ? pluginMesh.aabb : ObjectBounds.calcSpriteModelAABB(gameObject);
|
|||
|
|
calcOverlapAABBs(modelAABB, _overlapAABBBuffer);
|
|||
|
|
|
|||
|
|
var snapData = new ObjectToObjectSnapData();
|
|||
|
|
if (useMesh)
|
|||
|
|
{
|
|||
|
|
foreach (var aabbFace in _allBoxFaces)
|
|||
|
|
{
|
|||
|
|
ObjectVertexOverlap.overlapMeshModelVerts(gameObject, _overlapAABBBuffer[(int)aabbFace], _vector3Buffer);
|
|||
|
|
Plane facePlane = Box3D.calcFacePlane(modelAABB.center, modelAABB.size, aabbFace);
|
|||
|
|
facePlane.projectPoints(_vector3Buffer);
|
|||
|
|
snapData._snapSocketAABB[(int)aabbFace] = new AABB(_vector3Buffer);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
foreach (var aabbFace in _allBoxFaces)
|
|||
|
|
{
|
|||
|
|
if (aabbFace != Box3DFace.Front && aabbFace != Box3DFace.Back)
|
|||
|
|
{
|
|||
|
|
Box3D.calcFaceCorners(modelAABB.center, modelAABB.size, Quaternion.identity, aabbFace, _vector3Buffer);
|
|||
|
|
snapData._snapSocketAABB[(int)aabbFace] = new AABB(_vector3Buffer);
|
|||
|
|
}
|
|||
|
|
else snapData._snapSocketAABB[(int)aabbFace] = AABB.getInvalid();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return snapData;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public Box3DFaceAreaDesc getSnapSocketWorldAreaDesc(Box3DFace boxFace, Transform worldTransform)
|
|||
|
|
{
|
|||
|
|
return Box3D.getFaceAreaDesc(Vector3.Scale(_snapSocketAABB[(int)boxFace].size, worldTransform.lossyScale.abs()), boxFace);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public OBB calcSnapSocketWorldOBB(Box3DFace boxFace, Transform worldTransform)
|
|||
|
|
{
|
|||
|
|
return new OBB(_snapSocketAABB[(int)boxFace], worldTransform);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private static void calcOverlapAABBs(AABB modelAABB, List<AABB> overlapAABBs)
|
|||
|
|
{
|
|||
|
|
overlapAABBs.Clear();
|
|||
|
|
for (int boxFaceIndex = 0; boxFaceIndex < _allBoxFaces.Length; ++boxFaceIndex)
|
|||
|
|
{
|
|||
|
|
// Note: We have to GUESS an overlap size big enough to capture as much vertex data as possible, but not too big
|
|||
|
|
// as to capture vertices which are irrelevant for the current face.
|
|||
|
|
// When the vertices are collected, they will be projected on the face plane so the size only matters when collecting the verts.
|
|||
|
|
Vector3 faceNormal = Box3D.calcFaceNormal(modelAABB.center, modelAABB.size, Quaternion.identity, _allBoxFaces[boxFaceIndex]);
|
|||
|
|
float overlapSize = modelAABB.extents.absDot(faceNormal) * 0.1f;
|
|||
|
|
|
|||
|
|
AABB overlapAABB = modelAABB.calcInwardFaceExtrusion(_allBoxFaces[boxFaceIndex], overlapSize);
|
|||
|
|
overlapAABBs.Add(overlapAABB);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
#endif
|