private static void setupPolyshapes(GameObject go)
{
// take the mesh vertices
Vector3[] meshVertices = getMeshVertices(go);
// split in several convex polygons
List <Vector2[]> convexVects2 = BayazitPolygonDecomposer.ConvexPartition(meshVertices);
// add a new ChipmunkPolyShape for every convex polygon
for (int i = 0, c = convexVects2.Count; i < c; ++i)
{
Vector2[] vec2arr = convexVects2[i];
// for every poly shape component set its vertex[] attribute as the convex vertex[]
ChipmunkPolyShape polyShape = go.AddComponent <ChipmunkPolyShape>();
polyShape.verts = vec2arr;
}
}
protected void OnSceneGUI()
{
ChipmunkPolyShape poly = target as ChipmunkPolyShape;
if (poly != null)
{
SetupUndo("edited ChipmunkPolyShape");
Transform t = poly.transform;
bool dirty = false;
var verts = new List <Vector2>(poly.verts);
switch (Event.current.type)
{
case EventType.mouseUp:
verts = new List <Vector2>(poly.hull);
dirty = true;
insertedThisClick = false;
break;
case EventType.mouseMove:
// If you repaint too much, you really use a lot of CPU. Only during mouse move seems reasonable.
HandleUtility.Repaint();
break;
default: break;
}
// find closest new point handle.
if (!insertedThisClick)
{
Handles.color = Color.red;
Vector3 v = ClosestPoint(t, poly.verts);
Vector2 vDelta = DotHandle(v) - (Vector2)v;
if (vDelta != Vector2.zero)
{
// Insert a new vert at the front of the party.
verts.Insert(0, t.InverseTransformPoint((Vector2)v + vDelta));
insertedThisClick = true;
dirty = true;
}
}
Handles.color = Color.white;
for (int i = 0; i < verts.Count; i++)
{
Vector3 v = t.TransformPoint(verts[i]);
Vector2 vDelta = DotHandle(v) - (Vector2)v;
if (vDelta != Vector2.zero)
{
verts[i] = t.InverseTransformPoint((Vector2)v + vDelta);
dirty = true;
}
}
if (dirty)
{
poly.verts = verts.ToArray();
EditorUtility.SetDirty(target);
}
}
}