void BuildMesh()
{
var mesh = new DynamicMesh2D();
mesh.Vertices = new List<Vector2>() {
new Vector2(1,1),
new Vector2(1, -1),
new Vector2(-1, -1),
new Vector2(-1, 1),
};
var face1 = new Face();
face1.Vertices = new int[] { 0, 1, 2, 3};
mesh.Faces = new List<Face>() { face1 };
Editor.DynamicMeshComponent.DynamicMesh = mesh;
}
private void ExtrudeVertices()
{
Editor.RecordUndoState("Extrude");
var mesh = Editor.DynamicMesh;
var selectedVertices = Editor.SelectedVertices.ToArray();
if (selectedVertices.Count() != 2) {
// Debug.LogError("Must select two vertices to extrude");
return;
}
var faces = mesh.Faces.Where( face => {
return selectedVertices.All( v => face.Vertices.Contains(v));
} );
if (faces.Count() != 1) {
// Debug.LogError("Selected vertices must belong to exactly one face");
return;
}
var selectedFace = faces.First();
var index = System.Array.IndexOf(selectedFace.Vertices, selectedVertices.First());
var nextIndex = (index + 1) % selectedFace.Vertices.Length;
var previousIndex = index == 0 ? selectedFace.Vertices.Length - 1 : (index - 1);
if (selectedFace.Vertices[nextIndex] == selectedVertices.Last()) {
selectedVertices = selectedVertices.Reverse().ToArray();
} else if (selectedFace.Vertices[previousIndex] != selectedVertices.Last()) {
// Debug.LogError("Selected vertices must be connected by an edge");
return;
}
var v1 = selectedVertices[0];
var v2 = selectedVertices[1];
mesh.Vertices.Add(mesh.Vertices[selectedVertices[1]]);
var v3 = mesh.Vertices.Count() - 1;
mesh.Vertices.Add(mesh.Vertices[selectedVertices[0]]);
var v4 = mesh.Vertices.Count() - 1;
var newFace = new Face();
newFace.Vertices = new int[] { v1, v2, v3, v4};
mesh.Faces.Add(newFace);
Editor.SetMeshDirty();
Editor.SelectedVertices = new HashSet<int>(new int[] { v3, v4 });
}