void OnSceneGUI()
{
Island island = (Island)target;
for (int i = 0; i < island.m_triangles.Count; i++)
{
MeshSlice.Triangle tri = island.m_triangles[i];
Vector3 v0 = new Vector3(tri.p0.x, 1.0f, tri.p0.y);
Vector3 v1 = new Vector3(tri.p1.x, 1.0f, tri.p1.y);
Vector3 v2 = new Vector3(tri.p2.x, 1.0f, tri.p2.y);
Vector3 v3 = new Vector3(island.sliceStart.x, 1.0f, island.sliceStart.y);
Vector3 v4 = new Vector3(island.sliceEnd.x, 1.0f, island.sliceEnd.y);
float handleSize = HandleUtility.GetHandleSize((Vector3)v0) / 8.0f;
v0 = Handles.Slider2D(v0, Vector3.up, Vector3.right, Vector3.forward, handleSize, Handles.SphereCap, new Vector2(0.1f, 0.1f));
v1 = Handles.Slider2D(v1, Vector3.up, Vector3.right, Vector3.forward, handleSize, Handles.SphereCap, new Vector2(0.1f, 0.1f));
v2 = Handles.Slider2D(v2, Vector3.up, Vector3.right, Vector3.forward, handleSize, Handles.SphereCap, new Vector2(0.1f, 0.1f));
v3 = Handles.Slider2D(v3, Vector3.up, Vector3.right, Vector3.forward, handleSize, Handles.SphereCap, new Vector2(0.1f, 0.1f));
v4 = Handles.Slider2D(v4, Vector3.up, Vector3.right, Vector3.forward, handleSize, Handles.SphereCap, new Vector2(0.1f, 0.1f));
Handles.DrawLine(v0, v1);
Handles.DrawLine(v1, v2);
Handles.DrawLine(v2, v0);
Handles.DrawLine(v3, v4);
tri.p0 = new Vector2(v0.x, v0.z);
tri.p1 = new Vector2(v1.x, v1.z);
tri.p2 = new Vector2(v2.x, v2.z);
island.m_triangles[i] = tri;
island.sliceStart = new Vector2(v3.x, v3.z);
island.sliceEnd = new Vector2(v4.x, v4.z);
}
}
public override void OnInspectorGUI()
{
Island island = (Island)target;
island.IslandSourceMesh = EditorGUILayout.ObjectField(island.IslandSourceMesh, typeof(Mesh), true) as Mesh;
island.SectionsX = EditorGUILayout.IntField("Slices X", island.SectionsX);
island.SectionsY = EditorGUILayout.IntField("Slices Y", island.SectionsY);
if (GUILayout.Button("Slice Mesh"))
{
if (island.IslandSourceMesh != null)
{
Mesh[,] meshes = MeshSlice.Slice(island.IslandSourceMesh, island.SectionsX, island.SectionsY, true, true);
GameObject meshesObject = GameObjectHelper.FindChild(island.gameObject, "meshes", true);
int i = 0;
foreach (var mesh in meshes)
{
mesh.Optimize();
GameObject newObject = new GameObject("island_slice_" + i);
newObject.transform.parent = meshesObject.transform;
newObject.transform.localPosition = Vector3.zero;
newObject.AddComponent <MeshRenderer>();
MeshFilter filter = newObject.AddComponent <MeshFilter>();
filter.mesh = mesh;
i++;
}
}
}
if (GUILayout.Button("Reset"))
{
island.m_triangles.Clear();
MeshSlice.Triangle tri = new MeshSlice.Triangle();
tri.p0 = new Vector2(-1.0f, -1.0f);
tri.p1 = new Vector2(1.0f, -1.0f);
tri.p2 = new Vector2(0.0f, 1.0f);
island.m_triangles.Add(tri);
}
if (GUILayout.Button("Slice"))
{
List <MeshSlice.Triangle> tris = island.m_triangles;
List <MeshSlice.Triangle> outTris = new List <MeshSlice.Triangle>();
Vector2 v0, v1;
foreach (var tri in tris)
{
if (MathsHelper.LineTriIntersect(island.sliceStart, island.sliceEnd, tri.p0, tri.p1, tri.p2, out v0, out v1))
{
outTris.AddRange(MeshSlice.SliceTri(tri, island.sliceStart, island.sliceEnd));
}
else
{
outTris.Add(tri);
}
}
island.m_triangles = outTris;
}
}
