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- package me.hammerle.snuviscript.code;
- public final class Matrix {
- private final double[] data;
- private Matrix(double[] data) {
- this.data = data;
- }
- public Matrix() {
- data = new double[9];
- setIdentity();
- }
- public static Matrix getRotationY(double angle) {
- double[] a = new double[9];
- a[0] = Math.cos(angle);
- a[1] = 0.0;
- a[2] = -Math.sin(angle);
- a[3] = 0.0;
- a[4] = 1.0;
- a[5] = 0.0;
- a[6] = -a[2];
- a[7] = 0.0;
- a[8] = a[0];
- return new Matrix(a);
- }
-
- public static Matrix getRotationX(double angle) {
- double[] a = new double[9];
- a[0] = 1.0;
- a[1] = 0.0;
- a[2] = 0.0;
- a[3] = 0.0;
- a[4] = Math.cos(angle);
- a[5] = -Math.sin(angle);
- a[6] = 0.0;
- a[7] = -a[5];
- a[8] = a[4];
- return new Matrix(a);
- }
- public void setIdentity() {
- data[0] = 1;
- data[1] = 0;
- data[2] = 0;
- data[3] = 0;
- data[4] = 1;
- data[5] = 0;
- data[6] = 0;
- data[7] = 0;
- data[8] = 1;
- }
- public void mul(Vector v) {
- double x = v.getX();
- double y = v.getY();
- double z = v.getZ();
- v.set(data[0] * x + data[3] * y + data[6] * z,
- data[1] * x + data[4] * y + data[7] * z,
- data[2] * x + data[5] * y + data[8] * z);
- }
- public Matrix mul(Matrix m) {
- double[] a = new double[9];
- a[0] = data[0] * m.data[0] + data[3] * m.data[1] + data[6] * m.data[2];
- a[1] = data[1] * m.data[0] + data[4] * m.data[1] + data[7] * m.data[2];
- a[2] = data[2] * m.data[0] + data[5] * m.data[1] + data[8] * m.data[2];
- a[3] = data[0] * m.data[3] + data[3] * m.data[4] + data[6] * m.data[5];
- a[4] = data[1] * m.data[3] + data[4] * m.data[4] + data[7] * m.data[5];
- a[5] = data[2] * m.data[3] + data[5] * m.data[4] + data[8] * m.data[5];
- a[6] = data[0] * m.data[6] + data[3] * m.data[7] + data[6] * m.data[8];
- a[7] = data[1] * m.data[6] + data[4] * m.data[7] + data[7] * m.data[8];
- a[8] = data[2] * m.data[6] + data[5] * m.data[7] + data[8] * m.data[8];
- return new Matrix(a);
- }
- @Override
- public String toString() {
- return String.format("[%.3f %.3f %.3f, %.3f %.3f %.3f, %.3f %.3f %.3f]",
- data[0], data[3], data[6], data[1], data[4], data[7], data[2], data[5], data[8]);
- }
- }
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