private void Start()
{
Vector3[] vertices = new Vector3[pointsParent.childCount];
List <int> indices = new List <int>();
for (int i = 0; i < vertices.Length; i++)
{
vertices[i] = pointsParent.GetChild(i).position;
indices.Add(i);
}
Plane plane = new Plane(Vector3.back, 0);
ConvexHullAlgorithm.Execute(ref indices, vertices, plane.normal);
indices.Reverse();//反转列表，逆时针变顺时针
/*Vector3[] vertices2=new Vector3[indices.Count];
* for(int i=0;i<indices.Count;i++){
* Vector3 vertex=vertices[indices[i]];
* vertex.z=0;
* vertices2[i]=vertex;
* }
* indices=TriangulationAlgorithm.WidelyTriangleIndex(vertices2);*/
TriangulationAlgorithm.WidelyTriangleIndex(vertices, ref indices, plane);
for (int i = 0; i < indices.Count; i++)
{
int index = indices[i];
s_points.Add(vertices[index]);
}
}
private void DrawPolygon()
{
mesh = new Mesh();
mesh.name = "Polygon";
mesh.vertices = points.ToArray();
tris = TriangulationAlgorithm.WidelyTriangleIndex(new List <Vector3>(points), indexes).ToArray();
mesh.triangles = tris;
normals = new Vector3[mesh.vertices.Length];
for (int i = 0; i < mesh.vertices.Length; ++i)
{
normals[i] = Vector3.back;
}
mesh.normals = normals;
mesh.RecalculateBounds();
mesh.RecalculateTangents();
targetFilter.mesh = mesh;
}