public bool Contains(DTSweepConstraint e)
{
return(Contains(e.P) && Contains(e.Q));
}
public void AddEdge(DTSweepConstraint e)
{
if (this.Edges == null)
{
this.Edges = new List<DTSweepConstraint>();
}
this.Edges.Add(e);
}
public void MarkConstrainedEdge(DTSweepConstraint edge)
{
MarkConstrainedEdge(edge.P, edge.Q);
}
protected override void OnPaint(PaintEventArgs e)
{
ITriangulatable t = DisplayObjects[mDisplayIndex];
Text = "poly2tri test: " + t.FileName;
float xmin = (float)t.MinX;
float xmax = (float)t.MaxX;
float ymin = (float)t.MinY;
float ymax = (float)t.MaxY;
var fx = e.Graphics;
{
Font textFont = new Font("Times New Roman", 12);
System.Drawing.Brush textBrush = System.Drawing.Brushes.Black;
fx.DrawString("space = Pause/Unpause", textFont, textBrush, new PointF(10.0f, 10.0f));
fx.DrawString("left/right arrow (while paused) = prev/next example", textFont, textBrush, new PointF(10.0f, 30.0f));
fx.DrawString("mouse wheel = zoom in/out", textFont, textBrush, new PointF(10.0f, 50.0f));
fx.DrawString("drag = pan", textFont, textBrush, new PointF(10.0f, 70.0f));
fx.DrawString("double-click = reset zoom/pan", textFont, textBrush, new PointF(10.0f, 90.0f));
}
if (mbPaused)
{
Font textFont = new Font("Times New Roman", 24);
System.Drawing.Brush textBrush = System.Drawing.Brushes.Black;
fx.DrawString("Paused", textFont, textBrush, new PointF((ClientSize.Width / 2.0f) - 20.0f, 10.0f));
}
if (xmin < xmax && ymin < ymax)
{
float w = xmax - xmin;
float h = ymax - ymin;
Point2D ctr = new Point2D((double)ClientSize.Width / 2.0, (double)ClientSize.Height / 2.0);
Point2D screenScaler = new Point2D((double)ClientSize.Width / (double)w, (double)ClientSize.Height / (double)h);
Point2D zoomPoint = new Point2D(-mZoomPoint.X, mZoomPoint.Y);
zoomPoint.RotateDegrees(t.DisplayRotate);
zoomPoint.Scale(1.0 / screenScaler.X, 1.0 / screenScaler.Y);
float zoom = mZoomLevel * (float)Math.Min(screenScaler.X, screenScaler.Y);
fx.TranslateTransform(ctr.Xf, ctr.Yf);
fx.RotateTransform(t.DisplayRotate);
fx.ScaleTransform(zoom, -zoom);
fx.TranslateTransform((-(xmax + xmin) / 2.0f) - zoomPoint.Xf, (-(ymax + ymin) / 2.0f) - zoomPoint.Yf);
var penConstrained = new Pen(Color.Red, 1.0f / zoom);
//var penDelaunay = new Pen(Color.Blue, 1.0f / zoom);
var penNormal = new Pen(Color.Silver, 1.0f / zoom);
var penErrorCase1 = new Pen(Color.Purple, 1.0f / zoom);
var penErrorCase2 = new Pen(Color.Cyan, 1.0f / zoom);
foreach (var tri in t.Triangles)
{
PointF[] pts = new PointF[]
{
new PointF(tri.Points[0].Xf, tri.Points[0].Yf),
new PointF(tri.Points[1].Xf, tri.Points[1].Yf),
new PointF(tri.Points[2].Xf, tri.Points[2].Yf),
};
for (int i = 0; i < 3; ++i)
{
if (t.DisplayFlipX)
{
pts[i].X = xmax - (pts[i].X - xmin);
}
if (t.DisplayFlipY)
{
pts[i].Y = ymax - (pts[i].Y - ymin);
}
}
for (int i = 0; i < 3; ++i)
{
var curPen = penNormal;
DTSweepConstraint edge = null;
bool isConstrained = tri.GetConstrainedEdgeCCW(tri.Points[i]);
bool hasConstrainedEdge = tri.GetEdgeCCW(tri.Points[i], out edge);
if (isConstrained || hasConstrainedEdge)
{
if (isConstrained && hasConstrainedEdge)
{
curPen = penConstrained;
}
else if (isConstrained && !hasConstrainedEdge)
{
// this will happen when edges are split and is expected
//curPen = penErrorCase1;
curPen = penConstrained;
}
else
{
curPen = penErrorCase2;
}
}
//else if (tri.GetDelaunayEdgeCCW(tri.Points[i]))
//{
// curPen = penDelaunay;
//}
fx.DrawLine(curPen, pts[i], pts[(i + 1) % 3]);
}
}
fx.ResetTransform();
{
Point2D imageMouseCoord = new Point2D(mMouseImageCoord.X, (double)ClientSize.Height - mMouseImageCoord.Y);
imageMouseCoord.Subtract(ctr);
imageMouseCoord.RotateDegrees(t.DisplayRotate);
imageMouseCoord.Scale(1.0 / mZoomLevel);
imageMouseCoord.Scale(1.0 / screenScaler.X, 1.0 / screenScaler.Y);
imageMouseCoord.Translate((w / 2.0) + zoomPoint.X, (h / 2.0) + zoomPoint.Y);
if (t.DisplayFlipX)
{
imageMouseCoord.X = (double)xmax - (imageMouseCoord.X - (double)xmin);
}
if (t.DisplayFlipY)
{
imageMouseCoord.Y = (double)ymax - (imageMouseCoord.Y - (double)ymin);
}
Font textFont = new Font("Times New Roman", 12);
System.Drawing.Brush textBrush = System.Drawing.Brushes.Black;
fx.DrawString("Image X: " + imageMouseCoord.X.ToString(), textFont, textBrush, new PointF(20.0f, ClientSize.Height - 40.0f));
fx.DrawString("Image Y: " + imageMouseCoord.Y.ToString(), textFont, textBrush, new PointF(20.0f, ClientSize.Height - 20.0f));
fx.DrawString("ZoomPoint X: " + zoomPoint.X.ToString(), textFont, textBrush, new PointF(300.0f, ClientSize.Height - 40.0f));
fx.DrawString("ZoomPoint Y: " + zoomPoint.Y.ToString(), textFont, textBrush, new PointF(300.0f, ClientSize.Height - 20.0f));
fx.DrawString("ZoomLevel: " + mZoomLevel.ToString(), textFont, textBrush, new PointF(ClientSize.Width - 150.0f, ClientSize.Height - 20.0f));
//fx.DrawString("MX: " + mMouseImageCoord.X.ToString(), textFont, textBrush, new PointF(600.0f, ClientSize.Height - 40.0f));
//fx.DrawString("MY: " + mMouseImageCoord.Y.ToString(), textFont, textBrush, new PointF(600.0f, ClientSize.Height - 20.0f));
}
}
fx.DrawImage(ExampleData.Logo256x256, ClientSize.Width - kImageWidth - 10, 10, kImageWidth, kImageWidth);
base.OnPaint(e);
}
