void AddPolygonCollider2Ds(Transform parent)
{
// find all valid colliders, add them to projection
var colliders = GameObject.FindObjectsOfType <PolygonCollider2D>();
var filtered = colliders.Where(co => IsValidCollider(co)).ToList();
foreach (var collider in filtered)
{
for (int i = 0; i < collider.pathCount; i++)
{
// note: creating a primitive is necessary in order for it to bake properly
var go = GameObject.CreatePrimitive(PrimitiveType.Cube);
go.isStatic = true;
go.transform.parent = parent;
// position via offset and transformpoint
var localPos = new Vector3(collider.offset.x, collider.offset.y, 0);
var worldPos = collider.transform.TransformPoint(localPos);
go.transform.position = new Vector3(worldPos.x, 0, worldPos.y);
// scale depending on scale * collider size (circle=radius/box=size/...)
go.transform.localScale = NavMeshUtils2D.ScaleFromPolygonCollider2D(collider);
// rotation
go.transform.rotation = Quaternion.Euler(NavMeshUtils2D.RotationTo3D(collider.transform.eulerAngles));
// remove box collider. note that baking uses the meshfilter, so
// the collider doesn't really matter anyway.
DestroyImmediate(go.GetComponent <BoxCollider>());
// Use the triangulator to get indices for creating triangles
int[] indices = Triangulation.Triangulate(collider.GetPath(i).ToList()).ToArray();
// convert vector2 points to vector3 vertices
var vertices = collider.GetPath(i).Select(p => new Vector3(p.x, 0, p.y)).ToList();
// create mesh
var mesh = new Mesh();
mesh.vertices = vertices.ToArray();
mesh.triangles = indices;
//mesh.RecalculateNormals();
mesh.RecalculateBounds();
// assign it to the mesh filter
go.GetComponent <MeshFilter>().sharedMesh = mesh;
MakeUnwalkable(go);
}
}
}
