/**
* Computes the mean/average of two points.
*
* @param a (input) Point A
* @param b (input) Point B
* @param mean (output) average of 'a' and 'b'
*/
public static Point2D_F32 mean(Point2D_F32 a, Point2D_F32 b, Point2D_F32 mean) {
if (mean == null) mean = new Point2D_F32();
mean.x = (a.x + b.x) / 2.0f;
mean.y = (a.y + b.y) / 2.0f;
return mean;
}
public static List<Point2D_F32> random(float min, float max, int num, Random rand) {
List<Point2D_F32> ret = new ArrayList<Point2D_F32>();
float d = max - min;
for (int i = 0; i < num; i++) {
Point2D_F32 p = new Point2D_F32();
p.x = rand.nextFloat() * d + min;
p.y = rand.nextFloat() * d + min;
ret.add(p);
}
return ret;
}
public static void noiseNormal(List<Point2D_F32> pts, float sigma, Random rand) {
for (Point2D_F32 p : pts) {
p.x += (float) rand.nextGaussian() * sigma;
p.y += (float) rand.nextGaussian() * sigma;
}
}
