You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
58 lines
1.8 KiB
58 lines
1.8 KiB
/*
|
|
* Copyright 2022 Google LLC
|
|
*
|
|
* Licensed 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 com.google.ux.material.libmonet.dislike;
|
|
|
|
import com.google.ux.material.libmonet.hct.Hct;
|
|
|
|
/**
|
|
* Check and/or fix universally disliked colors.
|
|
*
|
|
* <p>Color science studies of color preference indicate universal distaste for dark yellow-greens,
|
|
* and also show this is correlated to distate for biological waste and rotting food.
|
|
*
|
|
* <p>See Palmer and Schloss, 2010 or Schloss and Palmer's Chapter 21 in Handbook of Color
|
|
* Psychology (2015).
|
|
*/
|
|
public final class DislikeAnalyzer {
|
|
|
|
private DislikeAnalyzer() {
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
|
|
/**
|
|
* Returns true if color is disliked.
|
|
*
|
|
* <p>Disliked is defined as a dark yellow-green that is not neutral.
|
|
*/
|
|
public static boolean isDisliked(Hct hct) {
|
|
final boolean huePasses = Math.round(hct.getHue()) >= 90.0 && Math.round(hct.getHue()) <= 111.0;
|
|
final boolean chromaPasses = Math.round(hct.getChroma()) > 16.0;
|
|
final boolean tonePasses = Math.round(hct.getTone()) < 65.0;
|
|
|
|
return huePasses && chromaPasses && tonePasses;
|
|
}
|
|
|
|
/** If color is disliked, lighten it to make it likable. */
|
|
public static Hct fixIfDisliked(Hct hct) {
|
|
if (isDisliked(hct)) {
|
|
return Hct.from(hct.getHue(), hct.getChroma(), 70.0);
|
|
}
|
|
|
|
return hct;
|
|
}
|
|
}
|