private void AddAdjacentPoint(MutableFace face, VertexPoint point, MutableSolid solid)
{
var s = point.MidpointStart.Position;
var e = point.MidpointEnd.Position;
foreach (var f in solid.Faces.Where(x => x != face))
{
var vertList = f.Vertices.ToList();
foreach (var edge in f.GetEdges())
{
if (edge.Start == s && edge.End == e)
{
var idx = vertList.FindIndex(x => x.Position.EquivalentTo(e));
f.Vertices.Insert(idx, new MutableVertex(point.Position));
return;
}
if (edge.Start == e && edge.End == s)
{
var idx = vertList.FindIndex(x => x.Position.EquivalentTo(s));
f.Vertices.Insert(idx, new MutableVertex(point.Position));
return;
}
}
}
}
private void BevelFace(SolidFace solidFace, int num)
{
var face = solidFace.Face;
var solid = solidFace.Solid.Copy;
// Remember the original positions
var vertexPositions = face.Vertices.Select(x => x.Position).ToList();
// Scale the face a bit and move it away by the bevel distance
var origin = face.Origin;
face.Transform(Matrix4x4.CreateScale(Vector3.One * 0.9f, origin));
face.Transform(Matrix4x4.CreateTranslation(face.Plane.Normal * num));
var vertList = face.Vertices.ToList();
// Create a face for each new edge -> old edge
foreach (var edge in face.GetEdges())
{
var startIndex = vertList.FindIndex(x => x.Position.EquivalentTo(edge.Start));
var endIndex = vertList.FindIndex(x => x.Position.EquivalentTo(edge.End));
var verts = new[] { vertexPositions[startIndex], vertexPositions[endIndex], edge.End, edge.Start };
var f = new MutableFace(verts, face.Texture.Clone());
solid.Faces.Add(f);
}
}
private void PokeFace(SolidFace solidFace, int num)
{
var face = solidFace.Face;
var solid = solidFace.Solid.Copy;
// Remove the face
solid.Faces.Remove(face);
var center = face.Origin + face.Plane.Normal * num;
foreach (var edge in face.GetEdges())
{
var v1 = face.Vertices.First(x => x.Position.EquivalentTo(edge.Start));
var v2 = face.Vertices.First(x => x.Position.EquivalentTo(edge.End));
var verts = new[] { v1.Position, v2.Position, center };
var f = new MutableFace(verts, face.Texture.Clone());
solid.Faces.Add(f);
}
}
public SolidFace(VertexSolid solid, MutableFace face)
{
Solid = solid;
Face = face;
}
private Vector3?GetIntersectionPoint(MutableFace face, Line line)
{
return(new Polygon(face.Vertices.Select(x => x.Position)).GetIntersectionPoint(line));
}
private static bool IsConvex(MutableFace face)
{
return(face.Vertices.Count > 2 && new Polygon(face.Vertices.Select(x => x.Position)).IsConvex());
}
