forked from SteamWar/SteamWar
61 lines
1.9 KiB
Java
61 lines
1.9 KiB
Java
/*
|
|
* This file is a part of the SteamWar software.
|
|
*
|
|
* Copyright (C) 2025 SteamWar.de-Serverteam
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
package de.steamwar.lobby.particle;
|
|
|
|
import java.awt.*;
|
|
import java.util.Arrays;
|
|
import java.util.List;
|
|
|
|
public class Gradient {
|
|
|
|
private List<Color> colors;
|
|
|
|
public Gradient(Color... colors) {
|
|
this.colors = Arrays.asList(colors);
|
|
}
|
|
|
|
public Color getColor(double value, double maxValue) {
|
|
if (colors.isEmpty()) {
|
|
return Color.BLACK;
|
|
}
|
|
if (colors.size() == 1) {
|
|
return colors.get(0);
|
|
}
|
|
|
|
value /= maxValue / (double) (colors.size() - 1);
|
|
|
|
return lerpColor(
|
|
colors.get((int) value),
|
|
colors.get((int) value + 1),
|
|
value - (int) value,
|
|
1);
|
|
}
|
|
|
|
private Color lerpColor(Color start, Color end, double step, double maxStep) {
|
|
double rStep = (end.getRed() - start.getRed()) / maxStep;
|
|
double gStep = (end.getGreen() - start.getGreen()) / maxStep;
|
|
double bStep = (end.getBlue() - start.getBlue()) / maxStep;
|
|
|
|
return new Color(start.getRed() + (int) (rStep * step),
|
|
start.getGreen() + (int) (gStep * step),
|
|
start.getBlue() + (int) (bStep * step));
|
|
}
|
|
}
|