package com.bernard.kholloscopinator; import java.awt.Color; import java.util.List; import java.util.Random; import java.util.stream.Collectors; import java.util.stream.IntStream; public class Util { public static List colors(int count) { return colors(count,new Random()); } public static List colors(int count,Random r) { float startAngle = r.nextFloat(); return IntStream.range(0, count) .mapToDouble(i->startAngle+i/((float)count)) .mapToObj(h->Color.getHSBColor((float)h, 1.f, 1.f)) .collect(Collectors.toList()); } public static Color complementaire(Color c) { return new Color(0xFFFFFF - c.getRGB()&0xFFFFFF); } public static Integer toInt(Color c) { int value = 0xFF0000 & c.getBlue()*0x010000 + 0xFF00 & c.getGreen()*0x0100 + 0xFF & c.getRed()*0x01; System.out.println(Integer.toHexString(value)); return Integer.valueOf(value^0xFFFFFF); } }