private void PaintDiagramIncremental(Graphics g) {
if (_graph != null) {
g.Clear(BackColor);
g.DrawLine(_sweepPen, splitPanel.Panel2.ClientRectangle.Left, _graph.SweepLine, splitPanel.Panel2.ClientRectangle.Right, _graph.SweepLine);
var item = cbCircles.SelectedIndex;
if (item == 1) {
var gp = new GraphicsPath();
foreach (var triangle in _graph.Triangles) {
var circle = new Circle(triangle.V1, triangle.V2, triangle.V3);
if (triangle.New) {
g.DrawEllipse(_newCirclePen, circle.GetRect());
} else {
gp.AddEllipse(circle.GetRect());
}
}
g.DrawPath(_circlePen, gp);
} else if (item == 2) {
var gp = new GraphicsPath();
foreach (var triangle in _graph.Triangles) {
if (triangle.New) {
g.DrawPolygon(_newCirclePen, new[] { (PointF)triangle.V1, triangle.V2, triangle.V3 });
} else {
gp.AddPolygon(new[] { (PointF)triangle.V1, triangle.V2, triangle.V3 });
}
}
g.DrawPath(_circlePen, gp);
}
if (chkShowEdges.Checked) {
var gp = new GraphicsPath();
foreach (var segment in _graph.Segments) {
var start = segment.P1;
var end = segment.P2;
if (segment.New) {
g.DrawLine(_newEdgePen, start, end);
} else {
gp.AddLine(start, end);
gp.CloseFigure();
}
}
g.DrawPath(_edgePen, gp);
}
if (chkBeachline.Checked) {
var gp = new GraphicsPath();
var beachLine = new Dictionary<int, float>();
foreach (var point in _graph.Sites.Except(_sitesToIgnore.ToList())) {
var drop = true;
for (int x = 0; x < g.VisibleClipBounds.Width; x++) {
var y = ParabolaY(point, _graph.SweepLine, x);
if (y > g.ClipBounds.Height) {
drop = false;
continue;
}
if (!beachLine.ContainsKey(x)) {
beachLine[x] = y;
drop = false;
} else if (beachLine[x] < y) {
beachLine[x] = y;
drop = false;
}
}
if (drop) {
_sitesToIgnore.Add(point);
}
}
for (int x = 0; x < beachLine.Count - 1; x++) {
gp.AddLine(x, beachLine[x], x + 1, beachLine[x + 1]);
}
g.DrawPath(_beachPen, gp);
}
if (chkShowVertices.Checked) {
var gp = new GraphicsPath();
foreach (var vertex in _graph.Vertices) {
var r = vertex.New ?
new RectangleF(vertex.X - 4, vertex.Y - 4, 8, 8)
: new RectangleF(vertex.X - 2, vertex.Y - 2, 4, 4)
;
if (vertex.New) {
g.FillEllipse(_newVertBrush, r);
} else {
gp.AddEllipse(r);
}
}
g.DrawPath(new Pen(Color.Red), gp);
}
if (chkShowSites.Checked) {
var gp = new GraphicsPath();
foreach (var point in _graph.Sites) {
var r = point.New ? new RectangleF(point.X - 4, point.Y - 4, 8, 8) : new RectangleF(point.X - 2, point.Y - 2, 4, 4);
if (point.New) {
g.FillEllipse(_newSiteBrush, r);
} else {
gp.AddEllipse(r);
}
}
g.FillPath(_siteBrush, gp);
}
}
}
private void PaintDiagramFull(Graphics g) {
if (_graph != null) {
g.Clear(BackColor);
g.DrawLine(_sweepPen, splitPanel.Panel2.ClientRectangle.Left, _graph.SweepLine, splitPanel.Panel2.ClientRectangle.Right, _graph.SweepLine);
var item = cbCircles.SelectedIndex;
if (item == 1) {
var gp = new GraphicsPath();
foreach (var triangle in _graph.Triangles) {
var circle = new Circle(triangle.V1, triangle.V2, triangle.V3);
if (triangle.New) {
g.DrawEllipse(_newCirclePen, circle.GetRect());
} else {
gp.AddEllipse(circle.GetRect());
}
}
g.DrawPath(_circlePen, gp);
} else if (item == 2) {
var gp = new GraphicsPath();
foreach (var triangle in _graph.Triangles) {
var circle = new Circle(triangle.V1, triangle.V2, triangle.V3);
if (triangle.New) {
g.DrawPolygon(_newCirclePen, new[] { (PointF)triangle.V1, triangle.V2, triangle.V3 });
} else {
gp.AddPolygon(new[] { (PointF)triangle.V1, triangle.V2, triangle.V3 });
}
}
g.DrawPath(_circlePen, gp);
}
if (chkShowEdges.Checked) {
var gp = new GraphicsPath();
foreach (var segment in _graph.Segments) {
var start = segment.P1;
var end = segment.P2;
if (segment.New) {
g.DrawLine(_newEdgePen, start, end);
} else {
gp.AddLine(start, end);
gp.CloseFigure();
}
}
g.DrawPath(_edgePen, gp);
}
if (chkShowVertices.Checked) {
var gp = new GraphicsPath();
foreach (var vertex in _graph.Vertices) {
var r = //vertex.New ?
new RectangleF(vertex.X - 4, vertex.Y - 4, 8, 8)
//: new RectangleF(vertex.X - 2, vertex.Y - 2, 4, 4)
;
if (vertex.New) {
g.FillEllipse(_newVertBrush, r);
} else {
gp.AddEllipse(r);
}
}
g.DrawPath(new Pen(Color.Red), gp);
}
if (chkShowSites.Checked) {
var gp = new GraphicsPath();
foreach (var point in _graph.Sites) {
var r = point.New ? new RectangleF(point.X - 4, point.Y - 4, 8, 8) : new RectangleF(point.X - 2, point.Y - 2, 4, 4);
if (point.New) {
g.FillEllipse(_newSiteBrush, r);
} else {
gp.AddEllipse(r);
}
}
g.FillPath(_siteBrush, gp);
}
}
}