protected float[] linesAsFloats(ArrayList<Line> lines) {
float[] floats = new float[lines.size() * 4];
int i = 0;
for (Line line : lines) {
floats[i] = line.getP1().getX();
floats[i + 1] = line.getP1().getY();
floats[i + 2] = line.getP2().getX();
floats[i + 3] = line.getP2().getY();
i += 4;
}
return floats;
}
static Point project(Line l, Point p) {
Point p1 = l.getP1();
Point p2 = l.getP2();
Vector base = new Vector(p2, p1);
double r = Vector.dot(new Vector(p, p1), base) / base.norm();
return base.scalarMul(r).plus(p1).toPoint();
}