2022-05-28 21:55:41 +02:00
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package de.bluecolored.bluemap.core.resources.resourcepack.texture;
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2022-07-24 12:10:00 +02:00
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import de.bluecolored.bluemap.api.debug.DebugDump;
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2022-05-28 21:55:41 +02:00
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import de.bluecolored.bluemap.core.resources.ResourcePath;
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import de.bluecolored.bluemap.core.util.math.Color;
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import javax.imageio.ImageIO;
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import java.awt.image.BufferedImage;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.util.Base64;
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@DebugDump
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public class Texture {
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public static final Texture MISSING = new Texture(
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new ResourcePath<>("bluemap", "missing"),
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new Color().set(0.5f, 0f, 0.5f, 1.0f, false),
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false,
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"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAPklEQVR4Xu3MsQkAMAwDQe2/tFPnBB4gpLhG8MpkZpNkZ6AKZKAKZKAKZKAKZKAKZKAKZKAKWg0XD/UPnjg4MbX+EDdeTUwAAAAASUVORK5CYII\u003d"
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);
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private ResourcePath<Texture> resourcePath;
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private Color color;
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private boolean halfTransparent;
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private String texture;
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private transient Color colorPremultiplied;
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@SuppressWarnings("unused")
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private Texture() {}
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private Texture(ResourcePath<Texture> resourcePath, Color color, boolean halfTransparent, String texture) {
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this.resourcePath = resourcePath;
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this.color = color.straight();
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this.halfTransparent = halfTransparent;
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this.texture = texture;
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}
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public ResourcePath<Texture> getResourcePath() {
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return resourcePath;
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}
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public Color getColorStraight() {
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return color;
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}
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public boolean isHalfTransparent() {
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return halfTransparent;
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}
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public Color getColorPremultiplied() {
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if (colorPremultiplied == null && color != null) {
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colorPremultiplied = new Color()
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.set(color)
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.premultiplied();
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}
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return colorPremultiplied;
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}
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public String getTexture() {
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return texture;
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}
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public void unloadImageData() {
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texture = null;
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}
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public static Texture from(ResourcePath<Texture> resourcePath, BufferedImage image) throws IOException {
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//crop off animation frames
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if (image.getHeight() > image.getWidth()){
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image = image.getSubimage(0, 0, image.getWidth(), image.getWidth());
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}
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//check halfTransparency
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boolean halfTransparent = checkHalfTransparent(image);
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//calculate color
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Color color = calculateColor(image);
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//write to Base64
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ByteArrayOutputStream os = new ByteArrayOutputStream();
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ImageIO.write(image, "png", os);
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String base64 = "data:image/png;base64," + Base64.getEncoder().encodeToString(os.toByteArray());
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return new Texture(resourcePath, color, halfTransparent, base64);
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}
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private static boolean checkHalfTransparent(BufferedImage image){
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for (int x = 0; x < image.getWidth(); x++){
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for (int y = 0; y < image.getHeight(); y++){
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int pixel = image.getRGB(x, y);
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int alpha = (pixel >> 24) & 0xff;
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if (alpha > 0x00 && alpha < 0xff){
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return true;
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}
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}
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}
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return false;
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}
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private static Color calculateColor(BufferedImage image){
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float alpha = 0f, red = 0f, green = 0f, blue = 0f;
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int count = 0;
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for (int x = 0; x < image.getWidth(); x++){
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for (int y = 0; y < image.getHeight(); y++){
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int pixel = image.getRGB(x, y);
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float pixelAlpha = ((pixel >> 24) & 0xff) / 255f;
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float pixelRed = ((pixel >> 16) & 0xff) / 255f;
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float pixelGreen = ((pixel >> 8) & 0xff) / 255f;
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float pixelBlue = (pixel & 0xff) / 255f;
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count++;
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alpha += pixelAlpha;
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red += pixelRed * pixelAlpha;
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green += pixelGreen * pixelAlpha;
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blue += pixelBlue * pixelAlpha;
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}
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}
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if (count == 0 || alpha == 0) return new Color();
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red /= alpha;
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green /= alpha;
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blue /= alpha;
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alpha /= count;
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return new Color().set(red, green, blue, alpha, false);
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}
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}
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