// Generate random point in polygon
public static GTAVector RandPointInPoly(GTALocation x)
{
float maxX = float.MinValue;
float maxY = float.MinValue;
float minX = float.MaxValue;
float minY = float.MaxValue;
float avgZ = 0f;
foreach (GTAVector v in x.ROI)
{
maxX = Math.Max(maxX, v.X);
maxY = Math.Max(maxY, v.Y);
minX = Math.Min(minX, v.X);
minY = Math.Min(minY, v.Y);
avgZ += v.Z;
}
avgZ /= x.ROI.Count;
avgZ += 0.5f;
while (true)
{
GTAVector v = new GTAVector(random.NextFloat(minX, maxX), random.NextFloat(minY, maxY), avgZ);
if (PointInPoly(x, v))
{
return(v);
}
}
}
public static bool PointInPoly(GTALocation loc, GTAVector v)
{
int max_point = loc.ROI.Count - 1;
float total_angle = GetAngle(loc.ROI[max_point].X, loc.ROI[max_point].Y, v.X, v.Y, loc.ROI[0].X, loc.ROI[0].Y);
for (int i = 0; i < max_point; i++)
{
total_angle += GetAngle(
loc.ROI[i].X, loc.ROI[i].Y,
v.X, v.Y,
loc.ROI[i + 1].X, loc.ROI[i + 1].Y);
}
return(Math.Abs(total_angle) > 1);
}
