private void BuildMesh()
{
int[] indices = TriangulationHelper.Triangulate2D(_polygonCollider2D.points);
Vector3[] vertices = new Vector3[_polygonCollider2D.points.Length];
for (int i = 0; i < vertices.Length; i++)
{
vertices[i] = _polygonCollider2D.points[i] + _polygonCollider2D.offset;
}
if (_meshFilter.sharedMesh == null)
{
_meshFilter.sharedMesh = new Mesh();
}
if (_meshFilter.sharedMesh.vertices != vertices)
{
_meshFilter.sharedMesh.vertices = vertices;
_meshFilter.sharedMesh.triangles = indices;
_meshFilter.sharedMesh.RecalculateNormals();
_meshFilter.sharedMesh.RecalculateBounds();
_meshRenderer.sortingOrder = _orderInLayer;
_meshFilter.sharedMesh.name = "geometry";
_meshFilter.sharedMesh.hideFlags = HideFlags.HideAndDontSave;
}
}
private void OnDrawGizmos()
{
PolygonCollider2D polygonCollider2D = this.gameObject.GetComponent <PolygonCollider2D>();
int[] indices = TriangulationHelper.Triangulate2D(polygonCollider2D.points);
Vector3[] vertices = new Vector3[polygonCollider2D.points.Length];
for (int i = 0; i < vertices.Length; i++)
{
vertices[i] = polygonCollider2D.points[i] + polygonCollider2D.offset;
}
MeshFilter meshFilter = this.gameObject.GetComponent <MeshFilter>();
MeshRenderer meshRenderer = this.gameObject.GetComponent <MeshRenderer>();
if (meshFilter.sharedMesh == null || meshFilter.sharedMesh.vertices.Length != vertices.Length)
{
meshFilter.sharedMesh = new Mesh();
}
meshFilter.sharedMesh.vertices = vertices;
meshFilter.sharedMesh.triangles = indices;
meshFilter.sharedMesh.RecalculateNormals();
meshFilter.sharedMesh.RecalculateBounds();
meshRenderer.sortingOrder = _orderInLayer;
meshFilter.sharedMesh.name = "geometry";
meshFilter.sharedMesh.hideFlags = HideFlags.HideAndDontSave;
}
private void UpdateMesh(bool initialize = false)
{
if (!initialize)
{
if (!_meshRenderer.isVisible)
{
return;
}
if (_settleScale <= 0)
{
return;
}
}
Vector2[] pathPoints = GetPathPoints();
_polygonCollider2D.points = pathPoints;
int[] indices = TriangulationHelper.Triangulate2D(pathPoints);
Vector3[] vertices = new Vector3[pathPoints.Length];
int vertexCount = vertices.Length;
for (int i = 0; i < vertexCount; i++)
{
vertices[i] = pathPoints[i];
}
Mesh mesh = _meshFilter.sharedMesh;
// Update mesh
if (mesh.vertexCount == 0 || mesh.vertexCount == vertexCount)
{
mesh.vertices = vertices;
mesh.triangles = indices;
mesh.RecalculateNormals();
mesh.RecalculateBounds();
}
}