Exemple #1
0
        }                                                                                                   // 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;
                }
            }
        }
Exemple #2
0
        // 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");
        }