source: java/main/src/main/java/com/framsticks/util/math/Point3d.java @ 193

package com.framsticks.util.math;
        
/**
 * The simple class which represent point in 3d space.
 */
public class Point3d
{
        public final double x;
        public final double y;
        public final double z;

        public Point3d() {
                x = 0.0;
                y = 0.0;
                z = 0.0;
        }

        public Point3d(double x, double y, double z) {
                this.x = x;
                this.y = y;
                this.z = z;
        }

        public Point3d(Point3d p) {
                x = p.x;
                y = p.y;
                z = p.z;
        }

        @Override
        public final String toString() {
                return x + " " + y + " " + z;
        }

        public final double get(int i) {
                switch (i) {
                        case 0: return x;
                        case 1: return y;
                        case 2: return z;
                }
                assert false;
                return 0;
        }


        public final Point3d add(Point3d p) {
                return new Point3d(x + p.x, y + p.y, z + p.z);
        }

        public final Point3d sub(Point3d p) {
                return new Point3d(x - p.x, y - p.y, z - p.z);
        }

        public final double length() {
                return Math.sqrt(x * x + y * y + z * z);
        }

        public static class Builder {
                double[] a = new double[3];

                public Point3d build() { return new Point3d(a[0], a[1], a[2]); }

                public final void set(int i, double v) {
                        a[i] = v;
                }
        }
}