ColorXyz.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.imaging.color;
/**
* Represents a color in the CIE 1931 color space, also known as XYZ color space.
*
* <p>
* Contains the constant values for black, white, red, green, and blue.
* </p>
*
* @see <a href="https://en.wikipedia.org/wiki/CIE_1931_color_space">https://en.wikipedia.org/wiki/CIE_1931_color_space</a>
* @since 1.0-alpha1
*/
public final class ColorXyz {
/**
* A constant for color black. Color components are:
*
* <pre>
* X: 0
* Y: 0
* Z: 0
* </pre>
*/
public static final ColorXyz BLACK = new ColorXyz(0, 0, 0);
/**
* A constant for color white. Color components are:
*
* <pre>
* X: 95.05
* Y: 100.00
* Z: 108.90
* </pre>
*/
public static final ColorXyz WHITE = new ColorXyz(95.05, 100, 108.9);
/**
* A constant for color red. Color components are:
*
* <pre>
* X: 41.24
* Y: 21.26
* Z: 1.93
* </pre>
*/
public static final ColorXyz RED = new ColorXyz(41.24, 21.26, 1.93);
/**
* A constant for color green. Color components are:
*
* <pre>
* X: 35.76
* Y: 71.52
* Z: 11.92
* </pre>
*/
public static final ColorXyz GREEN = new ColorXyz(35.76, 71.52, 11.92);
/**
* A constant for color blue. Color components are:
*
* <pre>
* X: 18.05
* Y: 7.22
* Z: 95.05
* </pre>
*/
public static final ColorXyz BLUE = new ColorXyz(18.05, 7.22, 95.05);
public final double x;
public final double y;
public final double z;
public ColorXyz(final double x, final double y, final double z) {
this.x = x;
this.y = y;
this.z = z;
}
@Override
public boolean equals(final Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
final ColorXyz colorXyz = (ColorXyz) o;
if (Double.compare(colorXyz.x, x) != 0) {
return false;
}
if (Double.compare(colorXyz.y, y) != 0) {
return false;
}
if (Double.compare(colorXyz.z, z) != 0) {
return false;
}
return true;
}
@Override
public int hashCode() {
int result;
long temp;
temp = Double.doubleToLongBits(x);
result = (int) (temp ^ temp >>> 32);
temp = Double.doubleToLongBits(y);
result = 31 * result + (int) (temp ^ temp >>> 32);
temp = Double.doubleToLongBits(z);
return 31 * result + (int) (temp ^ temp >>> 32);
}
@Override
public String toString() {
return "{X: " + x + ", Y: " + y + ", Z: " + z + "}";
}
}