protected void DrawMaze(Network _network, Graphics g)
{
g.Clear(colBackground);
Pen p = new Pen(colWall, 1f);
SolidBrush brush = new SolidBrush(colCorridor);
SolidBrush brushDebug = new SolidBrush(Color.LightGray);
foreach (Node n in _network.nodeDict.Keys)
{
ShapeNode s = (ShapeNode)n;
PointF centre = s.GetCentre();
// Create centre area and region fill it.
PointF[] centrePoints = s.points.ToArray();
for (int pointIndex = 0; pointIndex < s.points.Count; pointIndex++)
{
Vector2D vec = new Vector2D(centre, s.points[pointIndex]);
vec.Scale((float)corridorWidthCtrl.Value);
centrePoints[pointIndex].X = vec.b.X * (float)scaleCtrl.Value;
centrePoints[pointIndex].Y = vec.b.Y * (float)scaleCtrl.Value;
}
g.FillPolygon(/*brushDebug*/ brush, centrePoints);
// Render edges
for (int pointIndex = 0; pointIndex < s.points.Count; pointIndex++)
{
int nextIndex = (pointIndex + 1) % s.points.Count;
PointF centre1 = centrePoints[pointIndex];
PointF centre2 = centrePoints[nextIndex];
if (s.LinkList[pointIndex] == null || s.LinkList[pointIndex].visited == false)
{
// Edge unvisited
// Draw a line along edge of centre area
g.DrawLine(p, centre1, centre2);
}
else
{
// Calculate outer edge (in screen space)
PointF p1 = s.points[pointIndex];
PointF p2 = s.points[nextIndex];
p1.X *= (float)scaleCtrl.Value;
p1.Y *= (float)scaleCtrl.Value;
p2.X *= (float)scaleCtrl.Value;
p2.Y *= (float)scaleCtrl.Value;
// worldScale outer edge by corridor size
Vector2D vec = new Vector2D(p1, p2);
vec.Scale(0.5f - (0.5f * (float)corridorWidthCtrl.Value));
PointF outer1 = vec.b;
vec.a = p1;
vec.b = p2;
vec.Scale(0.5f + (0.5f * (float)corridorWidthCtrl.Value));
PointF outer2 = vec.b;
// Fill region between outer and inner edge
PointF[] poly = { outer1, centre1, centre2, outer2 };
g.FillPolygon(brush, poly);
// Draw lines from outer edge points -> centre edge points.
g.DrawLine(p, outer1, centre1);
g.DrawLine(p, outer2, centre2);
}
}
}
}
protected void DrawNodes(Graphics g, Pen p)
{
PointF[] renderPoints = new PointF[4];
Vector2D v;
foreach (KeyValuePair <Node, List <NodeLink> > kvp in network.nodeDict)
{
ShapeNode n = kvp.Key as ShapeNode;
PointF centre = n.GetCentre();
bool bBezierDrawn = false;
for (int edgeIndex1 = 0; edgeIndex1 < n.points.Count; edgeIndex1++)
{
NodeLink link1 = n.LinkList[edgeIndex1];
if (link1 != null && link1.visited == true)
{
renderPoints[0] = n.GetEdgeCentre(edgeIndex1);
v = new Vector2D(renderPoints[0], centre);
v.Scale((float)curveTension.Value);
renderPoints[1] = v.b;
renderPoints[0].X *= (int)nodeSize.Value;
renderPoints[0].Y *= (int)nodeSize.Value;
renderPoints[1].X *= (int)nodeSize.Value;
renderPoints[1].Y *= (int)nodeSize.Value;
DrawCircle(g, renderPoints[0], p.Width, p.Color);
for (int edgeIndex2 = (edgeIndex1 + 1); edgeIndex2 < n.points.Count; edgeIndex2++)
{
NodeLink link2 = n.LinkList[edgeIndex2];
if (link2 != null && link2 != link1 && link2.visited == true)
{
renderPoints[3] = n.GetEdgeCentre(edgeIndex2);
v = new Vector2D(renderPoints[3], centre);
v.Scale((float)curveTension.Value);
renderPoints[3].X *= (int)nodeSize.Value;
renderPoints[3].Y *= (int)nodeSize.Value;
renderPoints[2] = v.b;
renderPoints[2].X *= (int)nodeSize.Value;
renderPoints[2].Y *= (int)nodeSize.Value;
g.DrawBeziers(p, renderPoints);
bBezierDrawn = true;
}
}
if (bBezierDrawn == false)
{
// A dead end
renderPoints[1] = centre;
renderPoints[1].X *= (int)nodeSize.Value;
renderPoints[1].Y *= (int)nodeSize.Value;
g.DrawLine(p, renderPoints[0], renderPoints[1]);
DrawCircle(g, renderPoints[1], p.Width, p.Color);
}
}
}
}
}