} // used to search
// Polygon must be convex and clockwise, brute force but it works.
static public void FitInsideConvexPoly(List <Vector2> points, Vector2 comparepoint, Vector2 startsize, Vector2 offsets,
ref float mindist, ref Vector2 bestpos, ref Vector2 bestsize, float minwidthallowed = 1, float scaling = 0.9F)
{
Vector2 startpoint = comparepoint;
if (!InsidePolygon(points, startpoint)) // if given a point outside the polygon, no point starting there, pick the centroid
{
float area;
startpoint = PolygonTriangulator.Centroid(points, out area);
}
while (startsize.X > minwidthallowed)
{
Vector2 trysize = startsize;
startsize *= scaling;
bool foundoneatthissize = false;
for (int i = 0; i < 1000; i++)
{
Vector2 trypos = new Vector2(startpoint.X + FlipOffset(i / 50) * offsets.X, startpoint.Y + FlipOffset(i % 50) * offsets.Y);
bool inside = PolygonTriangulator.InsidePolygon(points, trypos, trysize.X, trysize.Y);
float fromcompare = (trypos - comparepoint).Length;
//string debugline = String.Format(" Poly {0} At {1} {2} try {3} dist {4} inside {5} step {6}", polynum, trypos.X, trypos.Y, trysize, textfromgeocentre, inside, i);
//writer.WriteLine(debugline);
if (inside)
{
if (fromcompare < mindist)
{
mindist = fromcompare;
bestpos = trypos;
bestsize = trysize;
//writer.WriteLine(String.Format(" {0} Best pos at {1} size {2} dist {3}", polynum, i, trysize, mindist));
foundoneatthissize = true;
}
}
}
if (foundoneatthissize)
{
break;
}
}
}
// KEEP for debug for now..
#if false
static public void Test()
{
///EDDiscovery._3DMap.PolygonTriangulator.Test();
if (true)
{
List <Vector2> points = new List <Vector2>();
points.Add(new Vector2(100, 100));
points.Add(new Vector2(100, 200));
points.Add(new Vector2(200, 200));
points.Add(new Vector2(200, 100));
Vector2 centroid = PolygonTriangulator.Centroid(points);
Console.WriteLine("{0} ", centroid);
}
if (false)
{
List <Vector2> points = new List <Vector2>();
points.Add(new Vector2(0, 100));
points.Add(new Vector2(100, 200));
points.Add(new Vector2(100, 100));
points.Add(new Vector2(200, 200));
points.Add(new Vector2(300, 100));
points.Add(new Vector2(150, 0));
points.Add(new Vector2(0, 50));
List <List <Vector2> > res = PolygonTriangulator.Triangulate(points, false);
foreach (List <Vector2> poly in res)
{
Console.WriteLine("Poly:");
foreach (Vector2 p in poly)
{
Console.WriteLine(" {0},{1}", p.X, p.Y);
}
}
}
Console.WriteLine("END");
}
public List <IData3DCollection> AddGalMapRegionsToDataset(GalacticMapping galmap, bool colourregions, int gmosel)
{
var polydataset = new PolygonCollection("regpolys", Color.White, 1f, OpenTK.Graphics.OpenGL.PrimitiveType.Triangles); // ORDER AND NUMBER v.Important
var outlinedataset = new PolygonCollection("reglines", Color.White, 1f, OpenTK.Graphics.OpenGL.PrimitiveType.LineLoop); // DrawStars picks them out in a particular order
var datasetbks = Data3DCollection <TexturedQuadData> .Create("regtext", Color.White, 1f);
if (galmap != null && galmap.Loaded)
{
long gmotarget = TargetClass.GetTargetGMO();
int cindex = 0;
foreach (GalacticMapObject gmo in galmap.GalacticMapObjects)
{
bool enabled = (gmosel & (1 << gmo.GalMapType.Index)) != 0; // if selected
if (enabled && gmo.GalMapType.Group == GalMapType.GroupType.Regions)
{
string name = gmo.Name;
Color[] array = new Color[] { Color.Red, Color.Green, Color.Blue,
Color.Brown, Color.Crimson, Color.Coral,
Color.Aqua, Color.Yellow, Color.Violet,
Color.Sienna, Color.Silver, Color.Salmon,
Color.Pink, Color.AntiqueWhite, Color.Beige,
Color.DarkCyan, Color.DarkGray, Color.ForestGreen, Color.LightSkyBlue,
Color.Lime, Color.Maroon, Color.Olive, Color.SteelBlue };
Color c = array[cindex++ % array.Length];
List <Vector2> polygonxz = new List <Vector2>(); // needs it in x/z and in vector2's
foreach (var pd in gmo.Points)
{
polygonxz.Add(new Vector2((float)pd.X, (float)pd.Z)); // can be concave and wound the wrong way..
}
Vector2 size, avg;
Vector2 centre = PolygonTriangulator.Centre(polygonxz, out size, out avg); // default geographic centre (min x/z + max x/z/2) used in case poly triangulate fails (unlikely)
List <List <Vector2> > polys = PolygonTriangulator.Triangulate(polygonxz, false); // cut into convex polygons first - because we want the biggest possible area for naming purposes
//Console.WriteLine("Region {0} decomposed to {1} ", name, polys.Count);
Vector2 bestpos = centre;
Vector2 bestsize = new Vector2(250, 250 / 5);
if (polys.Count > 0) // just in case..
{
centre = PolygonTriangulator.Centroids(polys); // weighted mean of the centroids
//Bitmap map3 = DrawString(String.Format("O{0}", cindex - 1), Color.White, gmostarfont); TexturedQuadData ntext3 = TexturedQuadData.FromBitmap(map3, new PointData(centre.X, 0, centre.Y), TexturedQuadData.NoRotation, 2000, 500); datasetbks.Add(ntext3);
float mindist = float.MaxValue;
foreach (List <Vector2> points in polys) // now for every poly
{
if (colourregions)
{
Color regcol = Color.FromArgb(64, c.R, c.G, c.B);
if (points.Count == 3) // already a triangle..
{
polydataset.Add(new Polygon(points, 1, regcol));
//outlinedataset.Add(new Polygon(points, 1, Color.FromArgb(255, 255, 255, 0))); //DEBUG
}
else
{
List <List <Vector2> > polytri = PolygonTriangulator.Triangulate(points, true); // cut into triangles not polygons
foreach (List <Vector2> pt in polytri)
{
polydataset.Add(new Polygon(pt, 1, regcol));
// outlinedataset.Add(new Polygon(pt, 1, Color.FromArgb(255, 255, 255, 0))); // DEBUG
}
}
}
//float area; Vector2 polycentrepos = PolygonTriangulator.Centroid(points,out area); Bitmap map2 = DrawString(String.Format("X") , Color.White, gmostarfont); TexturedQuadData ntext2 = TexturedQuadData.FromBitmap(map2, new PointData(polycentrepos.X, 0, polycentrepos.Y), TexturedQuadData.NoRotation, 1000, 200); datasetbks.Add(ntext2);
PolygonTriangulator.FitInsideConvexPoly(points, centre, new Vector2(3000, 3000 / 5), new Vector2(200, 200),
ref mindist, ref bestpos, ref bestsize, bestsize.X / 2);
}
}
Bitmap map = DrawString(gmo.Name, Color.White, gmostarfont);
PointData bitmappos = new PointData(bestpos.X, 0, bestpos.Y);
TexturedQuadData ntext = TexturedQuadData.FromBitmap(map, bitmappos, TexturedQuadData.NoRotation,
bestsize.X, bestsize.Y);
datasetbks.Add(ntext);
outlinedataset.Add(new Polygon(polygonxz, 1, Color.FromArgb(255, 128, 128, 128)));
}
}
}
_datasets.Add(polydataset);
_datasets.Add(outlinedataset);
_datasets.Add(datasetbks);
return(_datasets);
}