131 lines
3.1 KiB
Java
131 lines
3.1 KiB
Java
package com.hypixel.hytale.math.shape;
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import com.hypixel.hytale.math.matrix.Matrix4d;
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import com.hypixel.hytale.math.vector.Vector4d;
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import java.util.Random;
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import javax.annotation.Nonnull;
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public class Triangle4d {
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private Vector4d a;
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private Vector4d b;
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private Vector4d c;
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public Triangle4d(Vector4d a, Vector4d b, Vector4d c) {
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this.a = a;
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this.b = b;
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this.c = c;
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}
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public Triangle4d() {
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this(new Vector4d(), new Vector4d(), new Vector4d());
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}
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public Triangle4d(@Nonnull Vector4d[] points) {
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this(points, 0, 1, 2);
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}
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public Triangle4d(@Nonnull Vector4d[] points, int a, int b, int c) {
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this(points[a], points[b], points[c]);
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}
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public Vector4d getA() {
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return this.a;
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}
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public Vector4d getB() {
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return this.b;
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}
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public Vector4d getC() {
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return this.c;
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}
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public double getMin(int component) {
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double min = this.a.get(component);
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if (min > this.b.get(component)) {
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min = this.b.get(component);
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}
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if (min > this.c.get(component)) {
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min = this.c.get(component);
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}
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return min;
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}
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public double getMax(int component) {
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double max = this.a.get(component);
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if (max < this.b.get(component)) {
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max = this.b.get(component);
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}
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if (max < this.c.get(component)) {
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max = this.c.get(component);
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}
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return max;
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}
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@Nonnull
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public Triangle4d assign(@Nonnull Vector4d v1, @Nonnull Vector4d v2, @Nonnull Vector4d v3) {
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this.a.assign(v1);
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this.b.assign(v2);
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this.c.assign(v3);
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return this;
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}
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@Nonnull
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public Vector4d getRandom(@Nonnull Random random) {
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return this.getRandom(random, new Vector4d());
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}
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@Nonnull
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public Vector4d getRandom(@Nonnull Random random, @Nonnull Vector4d vec) {
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double p = random.nextDouble();
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double q = random.nextDouble() * (1.0 - p);
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double pq = 1.0 - p - q;
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vec.assign(
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this.a.x * pq + this.b.x * p + this.c.x * q,
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this.a.y * pq + this.b.y * p + this.c.y * q,
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this.a.z * pq + this.b.z * p + this.c.z * q,
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this.a.w * pq + this.b.w * p + this.c.w * q
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);
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return vec;
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}
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@Nonnull
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public Triangle4d multiply(@Nonnull Matrix4d matrix) {
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return this.multiply(matrix, this);
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}
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@Nonnull
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public Triangle4d multiply(@Nonnull Matrix4d matrix, @Nonnull Triangle4d target) {
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matrix.multiply(this.a, target.a);
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matrix.multiply(this.b, target.b);
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matrix.multiply(this.c, target.c);
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return target;
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}
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@Nonnull
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public Triangle2d to2d(@Nonnull Triangle2d target) {
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target.getA().assign(this.a.x, this.a.y);
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target.getB().assign(this.b.x, this.b.y);
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target.getC().assign(this.c.x, this.c.y);
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return target;
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}
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@Nonnull
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public Triangle4d perspectiveTransform() {
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this.a.perspectiveTransform();
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this.b.perspectiveTransform();
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this.c.perspectiveTransform();
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return this;
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}
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@Nonnull
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@Override
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public String toString() {
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return "Triangle4d{a=" + this.a + ", b=" + this.b + ", c=" + this.c + "}";
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}
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}
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