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package dev.figboot.cuberender.math;
public class Matrix3f {
public float m00, m01, m02,
m10, m11, m12,
m20, m21, m22;
public Matrix3f() {
this(1, 0, 0, 0, 1, 0, 0, 0, 1);
}
public Matrix3f(Matrix3f m) {
this(m.m00, m.m01, m.m02, m.m10, m.m11, m.m12, m.m20, m.m21, m.m22);
}
public Matrix3f(float m00, float m01, float m02, float m10, float m11, float m12, float m20, float m21, float m22) {
this.m00 = m00;
this.m01 = m01;
this.m02 = m02;
this.m10 = m10;
this.m11 = m11;
this.m12 = m12;
this.m20 = m20;
this.m21 = m21;
this.m22 = m22;
}
public Matrix3f identity() {
return identity(this);
}
public Matrix3f identity(Matrix3f target) {
target.m00 = 1f;
target.m11 = 1f;
target.m22 = 1f;
target.m01 = target.m02 = target.m10 = target.m12 = target.m20 = target.m21 = 0;
return target;
}
public Matrix3f times(Matrix3f other) {
return times(other, this);
}
public Matrix3f times(Matrix3f other, Matrix3f target) {
float m00 = this.m00 * other.m00 + this.m01 * other.m10 + this.m02 * other.m20;
float m01 = this.m00 * other.m01 + this.m01 * other.m11 + this.m02 * other.m21;
float m02 = this.m00 * other.m02 + this.m01 * other.m21 + this.m02 * other.m22;
float m10 = this.m10 * other.m00 + this.m11 * other.m10 + this.m12 * other.m20;
float m11 = this.m10 * other.m01 + this.m11 * other.m11 + this.m12 * other.m21;
float m12 = this.m10 * other.m02 + this.m11 * other.m12 + this.m12 * other.m22;
float m20 = this.m20 * other.m00 + this.m21 * other.m10 + this.m22 * other.m20;
float m21 = this.m20 * other.m01 + this.m21 * other.m11 + this.m22 * other.m21;
float m22 = this.m20 * other.m02 + this.m21 * other.m12 + this.m22 * other.m22;
target.m00 = m00;
target.m01 = m01;
target.m02 = m02;
target.m10 = m10;
target.m11 = m11;
target.m12 = m12;
target.m20 = m20;
target.m21 = m21;
target.m22 = m22;
return target;
}
public Vector3f transform(Vector3f other) {
return new Vector3f(
this.m00 * other.x + this.m01 * other.y + this.m02 * other.z,
this.m10 * other.x + this.m11 * other.y + this.m12 * other.z,
this.m20 * other.x + this.m21 * other.y + this.m22 * other.z);
}
public static Matrix3f rotateX(float radians) {
float f1 = (float)Math.cos(radians);
float f2 = (float)Math.sin(radians);
return new Matrix3f(
1, 0, 0,
0, f1, f2,
0, -f2, f1);
}
public static Matrix3f rotateY(float radians) {
float f1 = (float)Math.cos(radians);
float f2 = (float)Math.sin(radians);
return new Matrix3f(
f1, 0, -f2,
0, 1, 0,
f2, 0, f1);
}
public static Matrix3f rotateZ(float radians) {
float f1 = (float)Math.cos(radians);
float f2 = (float)Math.sin(radians);
return new Matrix3f(
f1, -f2, 0,
f2, f1, 0,
0, 0, 1);
}
public static Matrix3f scaleX(float by) {
return new Matrix3f(by, 0, 0, 0, 1, 0, 0, 0, 1);
}
public static Matrix3f scaleY(float by) {
return new Matrix3f(1, 0, 0, 0, by, 0, 0, 0, 1);
}
public static Matrix3f scaleZ(float by) {
return new Matrix3f(1, 0, 0, 0, 1, 0, 0, 0, by);
}
}
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