public static Shape Rectangle(Vector3D size)
{
Shape s = new Shape();
Mesh m = s.CreateConvex();
Face f = m.CreateFace(4);
Vector3D halfsize = size*0.5;
f.Vertices[0].Pos = new Point3D(-halfsize.X, -halfsize.Y, 0);
f.Vertices[1].Pos = new Point3D(-halfsize.X, halfsize.Y, 0);
f.Vertices[2].Pos = new Point3D( halfsize.X, halfsize.Y, 0);
f.Vertices[3].Pos = new Point3D( halfsize.X, -halfsize.Y, 0);
return s;
}
public static Shape Rectangle(Vector3D size)
{
Shape s = new Shape();
Mesh m = s.CreateConvex();
Face f = m.CreateFace(4);
Vector3D halfsize = size * 0.5;
f.Vertices[0].Pos = new Point3D(-halfsize.X, -halfsize.Y, 0);
f.Vertices[1].Pos = new Point3D(-halfsize.X, halfsize.Y, 0);
f.Vertices[2].Pos = new Point3D(halfsize.X, halfsize.Y, 0);
f.Vertices[3].Pos = new Point3D(halfsize.X, -halfsize.Y, 0);
return(s);
}
public void Clip2d(Mesh clip_mesh, List <Mesh> outside)
{
Mesh new_mesh = Shape.CreateConvex();
foreach (Edge clip_edge in clip_mesh.Edges)
{
Point3D raystart = clip_edge.Vertices[0].Pos;
Vector3D raydir = clip_edge.Direction;
Split2d(raystart, raydir, ESplitMode.KEEP_INSIDE, new_mesh);
if (new_mesh.Faces.Count != 0)
{
}
}
}
public Shape Copy()
{
//create a new shape and copy the vertices
Shape shape = new Shape();
foreach (Vertex v in Vertices)
{
Vertex copy = shape.CreateVertex();
copy.Pos = v.Pos;
}
//put new vertices in a quick look up table
Vertex[] newverts = shape.Vertices.ToArray();
//go over each convex
foreach (Mesh c in Convexes)
{
//create a new convex in the new shape
Mesh convexcopy = shape.CreateConvex();
//copy edges
foreach (Edge e in c.Edges)
{
//create the edge and use look up table to build new vertex list
Edge edgecopy = convexcopy.CreateEdge();
edgecopy.Vertices = e.Vertices.Select(a => newverts[a.Idx]).ToArray();
//add this edge to each of the vertices it uses
foreach (Vertex v in edgecopy.Vertices)
v.OwnerEdges.Add(edgecopy);
}
//build look up table for the edges
Edge[] newedges = convexcopy.Edges.ToArray();
//copy faces
foreach (Face f in c.Faces)
{
//create the face and use look up tables to build new vertex/edge list
Face facecopy = convexcopy.CreateFace();
facecopy.Vertices = f.Vertices.Select(a => newverts[a.Idx]).ToList();
facecopy.Edges = f.Edges.Select(a => newedges[a.Idx]).ToList();
//add this face to each of the vertices it uses
foreach (Vertex v in facecopy.Vertices)
v.OwnerFaces.Add(facecopy);
//add this face to each of the edges it uses
foreach (Edge e in facecopy.Edges)
e.OwnerFaces.Add(facecopy);
}
}
return shape;
}
public Shape Copy()
{
//create a new shape and copy the vertices
Shape shape = new Shape();
foreach (Vertex v in Vertices)
{
Vertex copy = shape.CreateVertex();
copy.Pos = v.Pos;
}
//put new vertices in a quick look up table
Vertex[] newverts = shape.Vertices.ToArray();
//go over each convex
foreach (Mesh c in Convexes)
{
//create a new convex in the new shape
Mesh convexcopy = shape.CreateConvex();
//copy edges
foreach (Edge e in c.Edges)
{
//create the edge and use look up table to build new vertex list
Edge edgecopy = convexcopy.CreateEdge();
edgecopy.Vertices = e.Vertices.Select(a => newverts[a.Idx]).ToArray();
//add this edge to each of the vertices it uses
foreach (Vertex v in edgecopy.Vertices)
{
v.OwnerEdges.Add(edgecopy);
}
}
//build look up table for the edges
Edge[] newedges = convexcopy.Edges.ToArray();
//copy faces
foreach (Face f in c.Faces)
{
//create the face and use look up tables to build new vertex/edge list
Face facecopy = convexcopy.CreateFace();
facecopy.Vertices = f.Vertices.Select(a => newverts[a.Idx]).ToList();
facecopy.Edges = f.Edges.Select(a => newedges[a.Idx]).ToList();
//add this face to each of the vertices it uses
foreach (Vertex v in facecopy.Vertices)
{
v.OwnerFaces.Add(facecopy);
}
//add this face to each of the edges it uses
foreach (Edge e in facecopy.Edges)
{
e.OwnerFaces.Add(facecopy);
}
}
}
return(shape);
}
