private void OnCollisionEnter(Collision collision)
{
startPos = collision.contacts[0].point;
cutMesh = collision.gameObject.GetComponent <CutMesh>();
Debug.Log("HIT");
}
private void OnCollisionEnter(Collision collision)
{
startPos = collision.contacts[0].point;
cutMesh = collision.gameObject.GetComponent <CutMesh>();
if (cutMesh != null)
{
if (speed >= 0.5)
{
cutMesh.Create();
}
Debug.Log("HIT");
}
}
public void MakeGameobject(CutMesh original)
{
GameObject = new GameObject(original.name);
GameObject.transform.position = original.transform.position;
GameObject.transform.rotation = original.transform.rotation;
GameObject.transform.localScale = original.transform.localScale;
var mesh = new Mesh();
mesh.name = original.GetComponent <MeshFilter>().mesh.name;
mesh.vertices = Vertices;
mesh.normals = Normals;
mesh.uv = UV;
for (var i = 0; i < Triangles.Length; i++)
{
mesh.SetTriangles(Triangles[i], i, true);
}
Bounds = mesh.bounds;
var renderer = GameObject.AddComponent <MeshRenderer>();
renderer.materials = original.GetComponent <MeshRenderer>().materials;
var filter = GameObject.AddComponent <MeshFilter>();
filter.mesh = mesh;
var collider = GameObject.AddComponent <MeshCollider>();
collider.convex = true;
var rigidbody = GameObject.AddComponent <Rigidbody>();
var meshDestroy = GameObject.AddComponent <CutMesh>();
meshDestroy.CutCascades = original.CutCascades;
meshDestroy.ExplodeForce = original.ExplodeForce;
}
private Vector3 _pos2; // planeとmeshの交点その2
public void Cut(Plane plane, CutMesh _cutMesh)
{
var group1ObjPosList = new List <Vector3>();
var group1ObjTriList = new List <int>();
var group2ObjPosList = new List <Vector3>();
var group2ObjTriList = new List <int>();
// 色々必要になってしまった
var meshTriangles = _cutMesh.Mesh.triangles;
var meshVertices = _cutMesh.Mesh.vertices;
var meshNormals = _cutMesh.Mesh.normals;
var meshPos = _cutMesh.transform.position;
var meshScale = _cutMesh.transform.localScale;
for (var i = 0; i < meshTriangles.Length; i += 3)
{
var group1PosList = new List <Vector3>();
var group1TriList = new List <int>();
var group2PosList = new List <Vector3>();
var group2TriList = new List <int>();
var idx0 = meshTriangles[i];
var idx1 = meshTriangles[i + 1];
var idx2 = meshTriangles[i + 2];
var verts = new List <Vector3>();
// 頂点位置をscaleやpositionに合わせてしっかり計算しないとおかしくなる
// あれ、もうmatrixで計算したほうがいい？
var v1 = Vector3.Scale(meshVertices[idx0], meshScale) + meshPos;
var v2 = Vector3.Scale(meshVertices[idx1], meshScale) + meshPos;
var v3 = Vector3.Scale(meshVertices[idx2], meshScale) + meshPos;
verts.Add(v1);
verts.Add(v2);
verts.Add(v3);
// そのポリゴンの法線を計算しておく
var normal = Vector3.Cross(meshVertices[idx2] - meshVertices[idx0], meshVertices[idx1] - meshVertices[idx0]);
CheckPlaneSide(plane, verts, group1PosList, group2PosList); // 1.グループ分け
if (group1PosList.Count > 0 && group2PosList.Count > 0)
{
CalcCrossPoint(plane, group1PosList, group2PosList); // 2.planeとの交点を求める
// 3.両方のグループともに交点を入れる
group1PosList.Add(_pos1);
group1PosList.Add(_pos2);
group2PosList.Add(_pos1);
group2PosList.Add(_pos2);
}
if (group1PosList.Count > 0)
{
var tris1 = CreateTriangles(group1PosList, normal);
var triIdx = group1ObjPosList.Count;
group1ObjPosList.AddRange(group1PosList);
// 二つめ以降ならidxがずれることに注意
foreach (var triI in tris1)
{
group1ObjTriList.Add(triI + triIdx);
}
}
if (group2PosList.Count > 0)
{
var tris2 = CreateTriangles(group2PosList, normal);
var triIdx = group2ObjPosList.Count;
group2ObjPosList.AddRange(group2PosList);
// 二つめ以降ならidxがずれることに注意
foreach (var triI in tris2)
{
group2ObjTriList.Add(triI + triIdx);
}
}
}
// 4.2つのグループに分けたオブジェクトを作成する
CreateCutObj(group1ObjPosList, group1ObjTriList);
CreateCutObj(group2ObjPosList, group2ObjTriList);
_cutMesh.gameObject.SetActive(false); // 5.元となるオブジェクトを非表示にする
}