/// <summary>
///
/// </summary>
/// <typeparam name="M"></typeparam>
/// <typeparam name="V"></typeparam>
/// <typeparam name="E"></typeparam>
/// <typeparam name="F"></typeparam>
/// <param name="factory"></param>
/// <param name="polylines"></param>
/// <param name="setPosition"></param>
/// <param name="tolerance"></param>
/// <returns></returns>
public static M CreateFromPolylines <M, V, E, F>(this HeMeshFactory <M, V, E, F> factory, IEnumerable <Polyline> polylines, Action <V, Vec3d> setPosition, double tolerance = zMath.ZeroTolerance)
where M : HeMesh <V, E, F>
where V : HeMesh <V, E, F> .Vertex
where E : HeMesh <V, E, F> .Halfedge
where F : HeMesh <V, E, F> .Face
{
var vertices = Flatten().RemoveCoincident(out List <int> indexMap, tolerance);
var faces = polylines.Select(p => Count(p));
return(factory.CreateFromFaceVertexData(vertices, indexMap.Batch(faces), setPosition));
IEnumerable <Vec3d> Flatten()
{
foreach (Polyline p in polylines)
{
int n = Count(p);
for (int i = 0; i < n; i++)
{
yield return(p[i]);
}
}
}
int Count(Polyline polyline)
{
return(polyline.IsClosed ? polyline.Count - 1 : polyline.Count);
}
}
/// <summary>
///
/// </summary>
/// <typeparam name="M"></typeparam>
/// <typeparam name="V"></typeparam>
/// <typeparam name="E"></typeparam>
/// <typeparam name="F"></typeparam>
/// <param name="factory"></param>
/// <param name="polylines"></param>
/// <param name="tolerance"></param>
/// <returns></returns>
public static M CreateFromPolylines <M, V, E, F>(this HeMeshFactory <M, V, E, F> factory, IEnumerable <Polyline> polylines, double tolerance = zMath.ZeroTolerance)
where M : HeMesh <V, E, F>
where V : HeMesh <V, E, F> .Vertex, IPosition3d
where E : HeMesh <V, E, F> .Halfedge
where F : HeMesh <V, E, F> .Face
{
return(factory.CreateFromPolylines(polylines, (v, p) => v.Position = p, tolerance));
}
/// <summary>
///
/// </summary>
/// <typeparam name="M"></typeparam>
/// <typeparam name="V"></typeparam>
/// <typeparam name="E"></typeparam>
/// <typeparam name="F"></typeparam>
/// <param name="factory"></param>
/// <param name="mesh"></param>
/// <returns></returns>
public static M CreateFromMesh <M, V, E, F>(this HeMeshFactory <M, V, E, F> factory, Mesh mesh)
where M : HeMesh <V, E, F>
where V : HeMesh <V, E, F> .Vertex, IVertex3d
where E : HeMesh <V, E, F> .Halfedge
where F : HeMesh <V, E, F> .Face
{
return(factory.CreateFromMesh(
mesh,
(v, p) => v.Position = p,
(v, n) => v.Normal = n
));
}
/// <summary>
///
/// </summary>
/// <typeparam name="M"></typeparam>
/// <typeparam name="V"></typeparam>
/// <typeparam name="E"></typeparam>
/// <typeparam name="F"></typeparam>
/// <param name="factory"></param>
/// <param name="mesh"></param>
/// <param name="setPosition"></param>
/// <param name="setNormal"></param>
/// <param name="setTexture"></param>
/// <param name="setColor"></param>
/// <returns></returns>
public static M CreateFromMesh <M, V, E, F>(this HeMeshFactory <M, V, E, F> factory, Mesh mesh, Action <V, Point3f> setPosition, Action <V, Vector3f> setNormal = null, Action <V, Point2f> setTexture = null, Action <V, Color> setColor = null)
where M : HeMesh <V, E, F>
where V : HeMesh <V, E, F> .Vertex
where E : HeMesh <V, E, F> .Halfedge
where F : HeMesh <V, E, F> .Face
{
var verts = mesh.Vertices;
int nv = verts.Count;
var faces = mesh.Faces;
int nf = faces.Count;
var norms = mesh.Normals;
var coords = mesh.TextureCoordinates;
var colors = mesh.VertexColors;
int mask = 0;
if (setNormal != null && norms.Count == nv)
{
mask |= 1;
}
if (setTexture != null && coords.Count == nv)
{
mask |= 2;
}
if (setColor != null && colors.Count == nv)
{
mask |= 4;
}
var result = factory.Create(nv, nv << 3, nf);
// add vertices
for (int i = 0; i < nv; i++)
{
var v = result.AddVertex();
setPosition(v, verts[i]);
if ((mask & 1) > 0)
{
setNormal(v, norms[i]);
}
if ((mask & 2) > 0)
{
setTexture(v, coords[i]);
}
if ((mask & 4) > 0)
{
setColor(v, colors[i]);
}
}
// add faces
for (int i = 0; i < nf; i++)
{
MeshFace f = faces[i];
if (f.IsQuad)
{
result.AddFace(f.A, f.B, f.C, f.D);
}
else
{
result.AddFace(f.A, f.B, f.C);
}
}
return(result);
}
