org.jbox2d.common.Vec3 Maven / Gradle / Ivy
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/*
* The MIT License (MIT)
*
* FXGL - JavaFX Game Library
*
* Copyright (c) 2015-2017 AlmasB ([email protected])
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package org.jbox2d.common;
import java.io.Serializable;
/**
* @author Daniel Murphy
*/
public class Vec3 implements Serializable {
private static final long serialVersionUID = 1L;
public float x, y, z;
public Vec3() {
x = y = z = 0f;
}
public Vec3(float argX, float argY, float argZ) {
x = argX;
y = argY;
z = argZ;
}
public Vec3(Vec3 copy) {
x = copy.x;
y = copy.y;
z = copy.z;
}
public Vec3 set(Vec3 vec) {
x = vec.x;
y = vec.y;
z = vec.z;
return this;
}
public Vec3 set(float argX, float argY, float argZ) {
x = argX;
y = argY;
z = argZ;
return this;
}
public Vec3 addLocal(Vec3 argVec) {
x += argVec.x;
y += argVec.y;
z += argVec.z;
return this;
}
public Vec3 add(Vec3 argVec) {
return new Vec3(x + argVec.x, y + argVec.y, z + argVec.z);
}
public Vec3 subLocal(Vec3 argVec) {
x -= argVec.x;
y -= argVec.y;
z -= argVec.z;
return this;
}
public Vec3 sub(Vec3 argVec) {
return new Vec3(x - argVec.x, y - argVec.y, z - argVec.z);
}
public Vec3 mulLocal(float argScalar) {
x *= argScalar;
y *= argScalar;
z *= argScalar;
return this;
}
public Vec3 mul(float argScalar) {
return new Vec3(x * argScalar, y * argScalar, z * argScalar);
}
public Vec3 negate() {
return new Vec3(-x, -y, -z);
}
public Vec3 negateLocal() {
x = -x;
y = -y;
z = -z;
return this;
}
public void setZero() {
x = 0;
y = 0;
z = 0;
}
public Vec3 clone() {
return new Vec3(this);
}
public String toString() {
return "(" + x + "," + y + "," + z + ")";
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + Float.floatToIntBits(x);
result = prime * result + Float.floatToIntBits(y);
result = prime * result + Float.floatToIntBits(z);
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (obj == null) return false;
if (getClass() != obj.getClass()) return false;
Vec3 other = (Vec3) obj;
if (Float.floatToIntBits(x) != Float.floatToIntBits(other.x)) return false;
if (Float.floatToIntBits(y) != Float.floatToIntBits(other.y)) return false;
if (Float.floatToIntBits(z) != Float.floatToIntBits(other.z)) return false;
return true;
}
public final static float dot(Vec3 a, Vec3 b) {
return a.x * b.x + a.y * b.y + a.z * b.z;
}
public final static Vec3 cross(Vec3 a, Vec3 b) {
return new Vec3(a.y * b.z - a.z * b.y, a.z * b.x - a.x * b.z, a.x * b.y - a.y * b.x);
}
public final static void crossToOut(Vec3 a, Vec3 b, Vec3 out) {
final float tempy = a.z * b.x - a.x * b.z;
final float tempz = a.x * b.y - a.y * b.x;
out.x = a.y * b.z - a.z * b.y;
out.y = tempy;
out.z = tempz;
}
public final static void crossToOutUnsafe(Vec3 a, Vec3 b, Vec3 out) {
assert (out != b);
assert (out != a);
out.x = a.y * b.z - a.z * b.y;
out.y = a.z * b.x - a.x * b.z;
out.z = a.x * b.y - a.y * b.x;
}
}