// Draws a voronoi polygon
private void DrawPolygon(System.Drawing.Graphics g, Center c, System.Drawing.Color color, bool noisyEdges, bool smoothBlending, bool lighting, bool drawBiomes)
{
Corner eC1 = null;
Corner eC2 = null;
c.area = 0;
foreach (Center n in c.neighbors)
{
DEdge e = EdgeWithCenters(c, n);
//Experimental Color (Biome Blending)
if (smoothBlending && drawBiomes)
{
color = BlendBiome(color, c, n);
}
//Experimental Lighting (Light Vectors)
if (lighting && drawBiomes)
{
color = ColorWithSlope(color, c, n, e);
}
// If noisy edges is off, draw triangles to create voronoi polygons (center to vertices of each edge)
if (!noisyEdges)
{
if (e.v0 == null)
{
continue;
}
Corner corner1A = e.v0.border ? e.v0 : e.v1;
if (corner1A.border)
{
if (eC1 == null)
{
eC1 = corner1A;
}
else
{
eC2 = corner1A;
}
}
DrawTriangle(g, e.v0, e.v1, c, color);
c.area = Math.Abs(c.loc.x * (e.v0.loc.y - e.v1.loc.y)
+ e.v0.loc.x * (e.v1.loc.y - c.loc.y)
+ e.v1.loc.x * (c.loc.y - e.v0.loc.y)) / 2;
}
//Experimental Polygon Drawing using noisy (natural) edges
if (noisyEdges)
{
// For each of the noisy edge paths fill the polygon created betweeen them and the center
if (path0[e.index] != null)
{
List <Point> tPath = path0[e.index];
System.Drawing.Point[] tA = new System.Drawing.Point[tPath.Count + 2];
tA[0] = new System.Drawing.Point((int)c.loc.x, (int)c.loc.y);
for (int i = 0; i < tPath.Count; i++)
{
tA[i + 1] = new System.Drawing.Point((int)tPath[i].x, (int)tPath[i].y);
}
tA[tA.Count() - 1] = new System.Drawing.Point((int)c.loc.x, (int)c.loc.y);
g.FillPolygon(new System.Drawing.SolidBrush(color), tA);
}
if (path1[e.index] != null)
{
List <Point> tPath = path1[e.index];
System.Drawing.Point[] tA = new System.Drawing.Point[tPath.Count + 2];
tA[0] = new System.Drawing.Point((int)c.loc.x, (int)c.loc.y);
for (int i = 0; i < tPath.Count; i++)
{
tA[i + 1] = new System.Drawing.Point((int)tPath[i].x, (int)tPath[i].y);
}
tA[tA.Count() - 1] = new System.Drawing.Point((int)c.loc.x, (int)c.loc.y);
g.FillPolygon(new System.Drawing.SolidBrush(color), tA);
}
}
}
if (eC2 != null)
{
if (CloseEnough(eC1.loc.x, eC2.loc.x, 1))
{
DrawTriangle(g, eC1, eC2, c, color);
}
else
{
System.Drawing.Point[] points = new System.Drawing.Point[4];
points[0] = new System.Drawing.Point((int)c.loc.x, (int)c.loc.y);
points[1] = new System.Drawing.Point((int)eC1.loc.x, (int)eC1.loc.y);
int tX = (int)((CloseEnough(eC1.loc.x, bounds.x, 1) || CloseEnough(eC2.loc.x, bounds.x, 0.5)) ? bounds.x : bounds.right);
int tY = (int)((CloseEnough(eC1.loc.y, bounds.y, 1) || CloseEnough(eC2.loc.y, bounds.y, 0.5)) ? bounds.y : bounds.bottom);
points[2] = new System.Drawing.Point(tX, tY);
points[3] = new System.Drawing.Point((int)eC2.loc.x, (int)eC2.loc.y);
g.FillPolygon(new System.Drawing.SolidBrush(color), points);
c.area += 0;
}
}
}
