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/**
* Copyright 2022-2023 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.opengl.math;
/**
* 2D Vector based upon two integer components.
*/
public final class Vec2i {
private int x;
private int y;
public Vec2i() {}
public Vec2i(final Vec2i o) {
set(o);
}
public Vec2i copy() {
return new Vec2i(this);
}
public Vec2i(final int[/*2*/] xy) {
set(xy);
}
public Vec2i(final int x, final int y) {
set(x, y);
}
/** this = o, returns this. */
public void set(final Vec2i o) {
this.x = o.x;
this.y = o.y;
}
/** this = { x, y }, returns this. */
public void set(final int x, final int y) {
this.x = x;
this.y = y;
}
/** this = xy, returns this. */
public Vec2i set(final int[/*2*/] xy) {
this.x = xy[0];
this.y = xy[1];
return this;
}
/** xy = this, returns xy. */
public int[] get(final int[/*2*/] xy) {
xy[0] = this.x;
xy[1] = this.y;
return xy;
}
public int x() { return x; }
public int y() { return y; }
public void setX(final int x) { this.x = x; }
public void setY(final int y) { this.y = y; }
/** Return true if all components are zero. */
public boolean isZero() {
return 0 == x && 0 == y;
}
/**
* Return the length of this vector, a.k.a the <i>norm</i> or <i>magnitude</i>
*/
public int length() {
return (int) Math.sqrt(lengthSq());
}
/**
* Return the squared length of this vector, a.k.a the squared <i>norm</i> or squared <i>magnitude</i>
*/
public int lengthSq() {
return x*x + y*y;
}
/**
* Return the squared distance between this vector and the given one.
* <p>
* When comparing the relative distance between two points it is usually sufficient to compare the squared
* distances, thus avoiding an expensive square root operation.
* </p>
*/
public int distSq(final Vec2i o) {
final int dx = x - o.x;
final int dy = y - o.y;
return dx*dx + dy*dy;
}
/**
* Return the distance between this vector and the given one.
*/
public int dist(final Vec2i o) {
return (int)Math.sqrt(distSq(o));
}
/**
* Equals check.
* @param o comparison value
* @return true if all components are equal
*/
public boolean isEqual(final Vec2i o) {
if( this == o ) {
return true;
} else {
return x == o.x && y == o.y;
}
}
@Override
public boolean equals(final Object o) {
if( o instanceof Vec2i ) {
return isEqual((Vec2i)o);
} else {
return false;
}
}
@Override
public String toString() {
return x + " / " + y;
}
}
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