public Triangle(HalfEdge _twin, int _newVert, Delaunay _d)
{
D = _d;
var v0 = _twin.OriginIdx;
var v1 = _newVert;
var v2 = _twin.NextEdge.OriginIdx;
Edge0 = new HalfEdge(this, v0, D);
Edge1 = new HalfEdge(this, v1, D);
Edge2 = new HalfEdge(this, v2, D);
Edge0.NextEdge = Edge1;
Edge1.NextEdge = Edge2;
Edge2.NextEdge = Edge0;
Edge2.Twin = _twin;
_twin.Twin = Edge2;
var pts = D.Points;
Geom.Circumcircle(pts[v0], pts[v1], pts[v2], out CCX, out CCY, out CCRSq);
PrevTri = _d.LastTri;
_d.LastTri = this;
_d.m_TriCount++;
}
/// <summary>
/// Create new Delaunay object
/// </summary>
/// <param name="_points">Points to be triangulated</param>
/// <typeparam name="T">Type of triangulator to use for triangulation</typeparam>
/// <returns>Delaunay object ready for triangulation</returns>
public static Delaunay Create <T>(Vector2[] _points)
where T : Triangulator, new()
{
var del = new Delaunay(_points);
del.triangulator = new T();
((ITriangulator)del.triangulator).SetTarget(del);
return(del);
}
public Triangle(int _v0, int _v1, int _v2, Delaunay _d)
{
D = _d;
Edge0 = new HalfEdge(this, _v0, D);
Edge1 = new HalfEdge(this, _v1, D);
Edge2 = new HalfEdge(this, _v2, D);
Edge0.NextEdge = Edge1;
Edge1.NextEdge = Edge2;
Edge2.NextEdge = Edge0;
var pts = D.Points;
Geom.Circumcircle(pts[_v0], pts[_v1], pts[_v2], out CCX, out CCY, out CCRSq);
PrevTri = _d.LastTri;
_d.LastTri = this;
_d.m_TriCount++;
}
void ITriangulator.SetTarget(Delaunay _d)
{
D = _d;
}
public HalfEdge(Triangle _triangle, int _originIdx, Delaunay _d)
{
D = _d;
Triangle = _triangle;
OriginIdx = _originIdx;
}
public Voronoi(Delaunay _d)
{
D = _d;
Bounds = _d.BoundsRect;
}
public static void Visualize(Delaunay _d, Voronoi _v = null, string _fileName = "debugMesh")
{
if (!Enabled)
{
return;
}
//var bitmap = new Bitmap((int) (_d.BoundsRect.width * 1.2f), (int) (_d.BoundsRect.height * 1.2f));
var bitmap = new Bitmap(2000, 2000);
var originOffset = _d.BoundsRect.min;
originOffset.x += 0 - bitmap.Width / 2f;
originOffset.y += 0 - bitmap.Height / 2f;
if (!float.IsInfinity(OriginOffsetOverride.x))
{
originOffset = _d.BoundsRect.min;
originOffset.x += OriginOffsetOverride.x - bitmap.Width / 2f;
originOffset.y += OriginOffsetOverride.y - bitmap.Height / 2f;
}
//Draw Mesh
var tris = _d.Triangles();
foreach (var tri in tris)
{
for (var idx = 0; idx < 3; ++idx)
{
var edge = tri.Edge(idx);
var x1 = edge.OriginPos.x - originOffset.x;
var y1 = edge.OriginPos.y - originOffset.y;
var x2 = edge.NextEdge.OriginPos.x - originOffset.x;
var y2 = edge.NextEdge.OriginPos.y - originOffset.y;
using (var g = Graphics.FromImage(bitmap))
{
g.SmoothingMode = SmoothingMode.None;
g.InterpolationMode = InterpolationMode.Low;
g.PixelOffsetMode = PixelOffsetMode.None;
var pen = new Pen(m_ColorMesh);
g.DrawLine(pen, x1, y1, x2, y2);
if (!showVertIdxs)
{
continue;
}
var textRect = new RectangleF(new PointF(x1, y1), new SizeF(45, 20));
g.DrawString(edge.OriginIdx.ToString(), new Font("Small Fonts", fontSize), Brushes.BurlyWood,
textRect);
}
}
}
//Draw Frontier
/*
* var cs = (CircleSweep) _d.triangulator;
* var fPt = cs.frontier.LastAddedFPt;
* var fpStart = fPt;
* var firstMoveDone = false;
* while (fPt.VertIdx != fpStart.VertIdx || firstMoveDone == false)
* {
* var pts = _d.Points;
* var x1 = pts[fPt.VertIdx].x - originOffset.x;
* var y1 = pts[fPt.VertIdx].y - originOffset.y;
* var x2 = pts[fPt.Right.VertIdx].x - originOffset.x;
* var y2 = pts[fPt.Right.VertIdx].y - originOffset.y;
*
* //var x1 = fPt.Pos.x - originOffset.x;
* //var y1 = fPt.Pos.y - originOffset.y;
* //var x2 = fPt.Right.Pos.x - originOffset.x;
* //var y2 = fPt.Right.Pos.y - originOffset.y;
*
* using (var g = Graphics.FromImage(bitmap))
* {
* g.SmoothingMode = SmoothingMode.None;
* g.InterpolationMode = InterpolationMode.Low;
* g.PixelOffsetMode = PixelOffsetMode.None;
* var pen = new Pen(m_ColorFront);
* g.DrawLine(pen, x1, y1, x2, y2);
* }
*
* fPt = fPt.Right;
* firstMoveDone = true;
* }
*/
//Draw Circumcircles
/*
* foreach (var tri in _d.Triangles)
* {
* float r;
* Vector2f center;
* tri.CircumCircle(out center, out r);
* var rul = new Vector2f(center.x - r, center.y - r);
* var rect = new Rectangle((int)rul.x, (int)rul.y, (int)(2 * r), (int)(2 * r));
* using (var g = Graphics.FromImage(bitmap))
* {
*
*
* g.SmoothingMode = SmoothingMode.None;
* g.InterpolationMode = InterpolationMode.Low;
* g.PixelOffsetMode = PixelOffsetMode.None;
*
* var pen = new Pen(m_ColorCircles);
* g.DrawEllipse(pen, (center.x - r) - originOffset.x, (center.y - r) - originOffset.y, r * 2, r * 2);
* //g.DrawRectangle(pen, rect);
* //g.DrawLine(pen, center.x, center.y, rect.Left, rect.Top);
* }
* }
*/
//Draw Origin
/*
* using (var g = Graphics.FromImage(bitmap))
* {
* g.SmoothingMode = SmoothingMode.None;
* g.InterpolationMode = InterpolationMode.Low;
* g.PixelOffsetMode = PixelOffsetMode.None;
* var pen = new Pen(m_ColorFront);
* var x1 = cs.Origin.x - originOffset.x;
* var y1 = cs.Origin.y - originOffset.y;
* g.FillRectangle(Brushes.Cyan, x1, y1, 2, 2);
* }
*/
//Voronoi on top
if (_v != null)
{
var sites = _v.SitesByDIdx.Values;
foreach (var site in sites)
{
var edges = site.Edges;
for (var idx = 0; idx < edges.Count; ++idx)
{
if (idx == edges.Count - 1 && !site.Closed)
{
break;
}
var edge = edges[idx];
var x1 = edge.Origin.x - originOffset.x;
var y1 = edge.Origin.y - originOffset.y;
var x2 = edge.NextEdge.Origin.x - originOffset.x;
var y2 = edge.NextEdge.Origin.y - originOffset.y;
using (var g = Graphics.FromImage(bitmap))
{
g.SmoothingMode = SmoothingMode.None;
g.InterpolationMode = InterpolationMode.Low;
g.PixelOffsetMode = PixelOffsetMode.None;
var pen = new Pen(m_ColorVor);
g.DrawLine(pen, x1, y1, x2, y2);
}
}
}
}
//Draw Voronoi Bounds Rect
if (_v != null)
{
var dBnds = new Rect(_v.Bounds);
dBnds.center = dBnds.center - originOffset;
using (var g = Graphics.FromImage(bitmap))
{
g.SmoothingMode = SmoothingMode.None;
g.InterpolationMode = InterpolationMode.Low;
g.PixelOffsetMode = PixelOffsetMode.None;
var pen = new Pen(Color.Orange);
//g.DrawRectangle(pen, dBnds.xMin, dBnds.yMin, dBnds.width, dBnds.height);
}
}
//Temp
/*
* {
* var cent = ((CircleSweep)(_d.triangulator)).Origin - originOffset;
* var v1 = _d.Points[326757] - originOffset;
*
* using (var g = Graphics.FromImage(bitmap))
* {
* g.SmoothingMode = SmoothingMode.None;
* g.InterpolationMode = InterpolationMode.Low;
* g.PixelOffsetMode = PixelOffsetMode.None;
* var pen = new Pen(Color.Yellow);
* g.DrawLine(pen, cent.x, cent.y, v1.x, v1.y);
*
* }
* }
*/
var path = AppDomain.CurrentDomain.BaseDirectory + _fileName + ".png";
bitmap.Save(path);
}