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计算色差值，参数为null时返回最大色差值

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chenzecheng 2024-08-09 10:20:56 +08:00
parent a6f0193e19
commit fe6ab048e3
1 changed files with 6 additions and 1 deletions
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7
hutool-core/src/main/java/cn/hutool/core/img/ColorUtil.java
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@ -207,6 +207,10 @@ public class ColorUtil {
* @since 6.0.0-M16
*/
public static int maxDistance(final Color color) {
if (null == color) {
// (0,0,0)到(256,256,256)的距离约等于442.336
return 443;
}
final int maxX = RGB_COLOR_BOUND - 2 * color.getRed();
final int maxY = RGB_COLOR_BOUND - 2 * color.getGreen();
final int maxZ = RGB_COLOR_BOUND - 2 * color.getBlue();
@ -223,7 +227,8 @@ public class ColorUtil {
*/
public static int computeColorDistance(Color color1, Color color2) {
if (null == color1 || null == color2) {
return 0;
// (0,0,0)到(256,256,256)的距离约等于442.336
return 443;
}
return (int) Math.sqrt(Math.pow(color1.getRed() - color2.getRed(), 2)
+ Math.pow(color1.getGreen() - color2.getGreen(), 2)