void GenerateData(MeshRenderer r)
{
var targetMatrix = transform.worldToLocalMatrix * r.transform.localToWorldMatrix;
Mesh targetMesh = r.gameObject.GetComponent <MeshFilter> ().sharedMesh;
int[] triangles = targetMesh.triangles;
Vector3[] vertexes = targetMesh.vertices;
//拼装成三角形
for (int i = 0; i < triangles.Length; i += 3)
{
//使用三角形索引号取顶点坐标可以保证组成的正确的显示三角形
int index0 = triangles[i];
int index1 = triangles[i + 1];
int index2 = triangles[i + 2];
Vector3 v0 = vertexes[index0];
Vector3 v1 = vertexes[index1];
Vector3 v2 = vertexes[index2];
v0 = targetMatrix.MultiplyPoint(v0);
v1 = targetMatrix.MultiplyPoint(v1);
v2 = targetMatrix.MultiplyPoint(v2);
var list = new List <Vector3> ();
list.Add(v0);
list.Add(v1);
list.Add(v2);
//每组三角形都进行检查
if (CollisionChecker.Checker(list))
{
Vector3 first = v0 - v1;
Vector3 second = v0 - v2;
Vector3 normal = Vector3.Cross(first, second).normalized;
AddPolygon(list.ToArray(), normal);
GenerateMesh();
}
}
}
