public static List <Vector2> BuildHull(List <Vector2> points, float scale = 10)
{
JarvisConvex jarvis = new JarvisConvex();
foreach (Vector2 p in points)
{
jarvis.AddPoint(p * scale);
}
return(jarvis.Calculate(scale));
}
public static List <Vector2> BuildHullIndex(List <Vector2> points, out List <int> resultIndex, float scale = 10)
{
JarvisConvex jarvis = new JarvisConvex();
foreach (Vector2 p in points)
{
jarvis.AddPoint(p * scale);
}
var ps = jarvis.Calculate(scale);
resultIndex = jarvis.mResultIndex;
return(ps);
}
public static void VoronoiGraphScatter(List <Vector2> datas)
{
// 计算凸包
List <Vector2> jarvis = JarvisConvex.BuildHull(datas); // 逆时针
// 剔除凸包上的点
List <Vector2> leftPoints = Remove(datas, jarvis);
// 寻找左半凸包
List <Vector2> leftJarvis = LeftJarvis(jarvis);
// 扫描线分区
List <RegionPoints> regions = GroupRegions(ref leftPoints, leftJarvis);
// 剩余的点 连成不相交的折线，合并到最后一个折线里去
if (leftPoints.Count > 0)
{
}
// 查找折线
FindPolyline(jarvis, regions);
}
public static List <Vector3> CalculateConvexHull(List <Vector3> vertices, bool use2d, int ignore = 1)
{
List <Vector3> temp = new List <Vector3>();
if (use2d)
{
int x = 0;
int y = 1;
if (ignore == 0)
{
x = 1;
y = 2;
}
else if (ignore == 1)
{
x = 0;
y = 2;
}
else
{
x = 0;
y = 1;
}
List <Vector2> temp2 = new List <Vector2>();
foreach (Vector3 v in vertices)
{
temp2.Add(new Vector2(v[x], v[y]));
}
temp2 = JarvisConvex.BuildHull(temp2);
GeoPolygonUtils.ReverseIfCW(ref temp2);
foreach (Vector2 v in temp2)
{
temp.Add(vertices.Find((Vector3 v3) => { return(v3[x] == v[0] && v3[y] == v[1]); }));
}
}
else
{
temp = QuickHull.BuildHull(vertices);
}
return(temp);
}
public static GeoPointsArray2 BuildConvexHull(GeoPointsArray2 points)
{
points.Distinct();
return(new GeoPointsArray2(JarvisConvex.BuildHull(points.mPointArray)));
}