/// <summary>
/// Add a tessellated face to the mesh.
/// </summary>
/// <param name="perimeter">A Polygon representing the perimeter of the face.</param>
/// <param name="voids">A collection of Polygons representing voids in the face.</param>
/// <param name="transform">A Transform to apply to all vertices of the supplied perimeter.</param>
/// <param name="reversed">A flag indicating whether the winding of the Polygons should be reversed.</param>
public void AddTesselatedFace(Polygon perimeter, IList <Polygon> voids, Transform transform, bool reversed = false)
{
var tess = new Tess();
AddContour(tess, perimeter, reversed);
if (voids != null)
{
foreach (var p in voids)
{
AddContour(tess, p, reversed);
}
}
tess.Tessellate(WindingRule.EvenOdd, ElementType.Polygons, 3);
for (var i = 0; i < tess.ElementCount; i++)
{
var a = tess.Vertices[tess.Elements[i * 3]].Position.ToVector3();
var b = tess.Vertices[tess.Elements[i * 3 + 1]].Position.ToVector3();
var c = tess.Vertices[tess.Elements[i * 3 + 2]].Position.ToVector3();
AddTriangle(transform.OfPoint(a), transform.OfPoint(b), transform.OfPoint(c));
}
}
public static UnityEngine.Vector3[] ToUnityVertices(this IEnumerable <double> arr, Hypar.Geometry.Transform t)
{
var list = arr.ToList();
var count = arr.Count();
var verts = new UnityEngine.Vector3[count / 3];
var index = 0;
for (var i = 0; i < count; i += 3)
{
var vt = t.OfPoint(new Vector3(list[i], list[i + 1], list[i + 2]));
// var v = new UnityEngine.Vector3((float)list[i], (float)list[i+1], (float)list[i+2]);
var v = vt.ToUnityVector3();
verts[index] = v;
index++;
}
return(verts);
}
/// <summary>
/// Transform the polygon by the specified transform.
/// </summary>
/// <param name="t"></param>
/// <returns></returns>
public Polygon Transform(Transform t)
{
return(new Polygon(this.Vertices.Select(v => t.OfPoint(v)).ToList()));
}