add isometric head renderer

src/main/java/cc.fascinated/service/PlayerService.java

@@ -3,6 +3,7 @@ package cc.fascinated.service;
 import cc.fascinated.common.PlayerUtils;
 import cc.fascinated.common.Tuple;
 import cc.fascinated.common.UUIDUtils;
+import cc.fascinated.config.Config;
 import cc.fascinated.exception.impl.MojangAPIRateLimitException;
 import cc.fascinated.exception.impl.RateLimitException;
 import cc.fascinated.exception.impl.ResourceNotFoundException;
@@ -58,7 +59,7 @@ public class PlayerService {
         }
 
         Optional<CachedPlayer> cachedPlayer = playerCacheRepository.findById(uuid);
-        if (cachedPlayer.isPresent()) { // Return the cached player if it exists
+        if (cachedPlayer.isPresent() && Config.INSTANCE.isProduction()) { // Return the cached player if it exists
             log.info("Player {} is cached", originalId);
             return cachedPlayer.get();
         }
@@ -94,7 +95,7 @@ public class PlayerService {
     public CachedPlayerName usernameToUuid(String username) {
         log.info("Getting UUID from username: {}", username);
         Optional<CachedPlayerName> cachedPlayerName = playerNameCacheRepository.findById(username.toUpperCase());
-        if (cachedPlayerName.isPresent()) {
+        if (cachedPlayerName.isPresent() && Config.INSTANCE.isProduction()) {
             return cachedPlayerName.get();
         }
         try {
@@ -118,20 +119,21 @@ public class PlayerService {
      *
      * @param player the player
      * @param part the part of the skin
+     * @param renderOverlay whether to render the overlay
      * @return the skin part
      */
-    public CachedPlayerSkinPart getSkinPart(Player player, Skin.Parts part, int size) {
+    public CachedPlayerSkinPart getSkinPart(Player player, Skin.Parts part, boolean renderOverlay, int size) {
         log.info("Getting skin part: {} for player: {}", part.getName(), player.getUniqueId());
         String key = "%s-%s-%s".formatted(player.getUniqueId(), part.getName(), size);
         Optional<CachedPlayerSkinPart> cache = playerSkinPartCacheRepository.findById(key);
 
         // The skin part is cached
-        if (cache.isPresent()) {
+        if (cache.isPresent() && Config.INSTANCE.isProduction()) {
             log.info("Skin part {} for player {} is cached", part.getName(), player.getUniqueId());
             return cache.get();
         }
 
-        byte[] skinPartBytes = PlayerUtils.getSkinPartBytes(player.getSkin(), part, size);
+        byte[] skinPartBytes = part.getSkinPartParser().getPart(player.getSkin(), part.getName(), renderOverlay, size);
         CachedPlayerSkinPart skinPart = new CachedPlayerSkinPart(
                 key,
                 skinPartBytes

src/main/java/cc.fascinated/service/ServerService.java

@@ -2,6 +2,7 @@ package cc.fascinated.service;
 
 import cc.fascinated.common.DNSUtils;
 import cc.fascinated.common.EnumUtils;
+import cc.fascinated.config.Config;
 import cc.fascinated.exception.impl.BadRequestException;
 import cc.fascinated.exception.impl.ResourceNotFoundException;
 import cc.fascinated.model.cache.CachedMinecraftServer;
@@ -63,7 +64,7 @@ public class ServerService {
 
         // Check if the server is cached
         Optional<CachedMinecraftServer> cached = serverCacheRepository.findById(key);
-        if (cached.isPresent()) {
+        if (cached.isPresent() && Config.INSTANCE.isProduction()) {
                 log.info("Server {}:{} is cached", hostname, port);
             return cached.get();
         }

src/main/java/cc.fascinated/service/skin/SkinPartParser.java

@@ -0,0 +1,48 @@
+package cc.fascinated.service.skin;
+
+import cc.fascinated.common.ImageUtils;
+import cc.fascinated.model.player.Skin;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.SneakyThrows;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+
+@AllArgsConstructor @Getter
+public abstract class SkinPartParser {
+
+    /**
+     * Gets the skin part image.
+     *
+     * @param skin the skin
+     * @param x the x position
+     * @param y the y position
+     * @param width the width
+     * @param height the height
+     * @param scale the scale
+     * @return the skin part image
+     */
+    public BufferedImage getSkinPart(Skin skin, int x, int y, int width, int height, double scale) {
+        try {
+            BufferedImage skinImage = ImageIO.read(new ByteArrayInputStream(skin.getSkinImage()));
+            BufferedImage part = skinImage.getSubimage(x, y, width, height);
+            return ImageUtils.resize(part, scale);
+        } catch (Exception ex) {
+            return null;
+        }
+    }
+
+    /**
+     * Get the skin part image.
+     *
+     * @param skin the skin
+     * @param partName the skin part name
+     * @param renderOverlay whether to render the overlay
+     * @param size the output size
+     * @return the skin part image
+     */
+    public abstract byte[] getPart(Skin skin, String partName, boolean renderOverlay, int size);
+}

src/main/java/cc.fascinated/service/skin/impl/FlatParser.java

@@ -0,0 +1,66 @@
+package cc.fascinated.service.skin.impl;
+
+import cc.fascinated.common.ImageUtils;
+import cc.fascinated.model.player.Skin;
+import cc.fascinated.service.skin.SkinPartParser;
+import lombok.Getter;
+import lombok.extern.log4j.Log4j2;
+
+import javax.imageio.ImageIO;
+import java.awt.*;
+import java.awt.geom.AffineTransform;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayOutputStream;
+
+@Getter @Log4j2
+public class FlatParser extends SkinPartParser {
+
+    /**
+     * The x and y position of the part.
+     */
+    private final int x, y;
+
+    /**
+     * The width and height of the part.
+     */
+    private final int widthAndHeight;
+
+    /**
+     * Constructs a new {@link FlatParser}.
+     *
+     * @param x the x position of the part
+     * @param y the y position of the part
+     * @param widthAndHeight the width and height of the part
+     */
+    public FlatParser(int x, int y, int widthAndHeight) {
+        this.x = x;
+        this.y = y;
+        this.widthAndHeight = widthAndHeight;
+    }
+
+    @Override
+    public byte[] getPart(Skin skin, String partName, boolean renderOverlay, int size) {
+        double scale = (double) size / this.widthAndHeight;
+        log.info("Getting {} part bytes for {} with size {} and scale {}", partName, skin.getUrl(), size, scale);
+
+        try {
+            BufferedImage outputImage = new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB);
+            Graphics2D graphics = outputImage.createGraphics();
+
+            graphics.setTransform(AffineTransform.getScaleInstance(scale, scale));
+            graphics.drawImage(this.getSkinPart(skin, this.x, this.y, this.widthAndHeight, this.widthAndHeight, 1), 0, 0, null);
+
+            try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
+                ImageIO.write(outputImage, "png", outputStream);
+                // Cleanup
+                outputStream.flush();
+                graphics.dispose();
+                log.info("Successfully got {} part bytes for {}", partName, skin.getUrl());
+                return outputStream.toByteArray();
+            }
+        } catch (Exception ex) {
+            log.error("Failed to get {} part bytes for {}", partName, skin.getUrl(), ex);
+            return null;
+        }
+    }
+}

src/main/java/cc.fascinated/service/skin/impl/IsometricHeadParser.java

@@ -0,0 +1,102 @@
+package cc.fascinated.service.skin.impl;
+
+import cc.fascinated.common.ImageUtils;
+import cc.fascinated.model.player.Skin;
+import cc.fascinated.service.skin.SkinPartParser;
+import lombok.Getter;
+import lombok.extern.log4j.Log4j2;
+
+import javax.imageio.ImageIO;
+import java.awt.*;
+import java.awt.geom.AffineTransform;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayOutputStream;
+
+@Getter @Log4j2
+public class IsometricHeadParser extends SkinPartParser {
+
+    private static final double SKEW_A = 26d / 45d;    // 0.57777777
+    private static final double SKEW_B = SKEW_A * 2d; // 1.15555555
+
+    @Override
+    public byte[] getPart(Skin skin, String partName, boolean renderOverlay, int size) {
+        double scale = (size / 8d) / 2.5;
+        log.info("Getting {} part bytes for {} with size {} and scale {}", partName, skin.getUrl(), size, scale);
+
+        try {
+            final BufferedImage outputImage = new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB);
+
+            // Get all the required head parts
+            final BufferedImage headTop = ImageUtils.resize(this.getSkinPart(skin, 8, 0, 8, 8, 1), scale);
+            final BufferedImage headFront = ImageUtils.resize(this.getSkinPart(skin, 8, 8, 8, 8, 1), scale);
+            final BufferedImage headRight = ImageUtils.resize(this.getSkinPart(skin, 0, 8, 8, 8, 1), scale);
+
+            if (renderOverlay) {
+                // Draw the overlay on top of the gathered skin parts
+
+                // Top overlay
+                Graphics2D g = headTop.createGraphics();
+                g.drawImage(this.getSkinPart(skin, 40, 0, 8, 8, 1), 0, 0, null);
+                g.dispose();
+
+                // Front overlay
+                g = headFront.createGraphics();
+                g.drawImage(this.getSkinPart(skin, 16, 8, 8, 8, 1), 0, 0, null);
+                g.dispose();
+
+                // Right side overlay
+                g = headRight.createGraphics();
+                g.drawImage(this.getSkinPart(skin, 32, 8, 8, 8, 1), 0, 0, null);
+                g.dispose();
+            }
+
+            // Declare pos
+            double x;
+            double y;
+            double z;
+
+            // Declare offsets
+            final double z_offset = scale * 3.5d;
+            final double x_offset = scale * 2d;
+
+            // Create graphics
+            final Graphics2D outGraphics = outputImage.createGraphics();
+
+            // head top
+            x = x_offset;
+            y = -0.5;
+            z = z_offset;
+            outGraphics.setTransform(new AffineTransform(1d, -SKEW_A, 1, SKEW_A, 0, 0));
+            outGraphics.drawImage(headTop, (int) (y - z), (int) (x + z), headTop.getWidth(), headTop.getHeight() + 1, null);
+
+            // head front
+            x = x_offset + 8 * scale;
+            y = 0;
+            z = z_offset - 0.5;
+            outGraphics.setTransform(new AffineTransform(1d, -SKEW_A, 0d, SKEW_B, 0d, SKEW_A));
+            outGraphics.drawImage(headFront, (int) (y + x), (int) (x + z), headFront.getWidth(), headFront.getHeight(), null);
+
+            // head right
+            x = x_offset;
+            y = 0;
+            z = z_offset;
+            outGraphics.setTransform(new AffineTransform(1d, SKEW_A, 0d, SKEW_B, 0d, 0d));
+            outGraphics.drawImage(headRight, (int) (x + y + 1), (int) (z - y - 0.5), headRight.getWidth(), headRight.getHeight() + 1, null);
+
+            // Cleanup and return
+            outGraphics.dispose();
+
+            try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
+                ImageIO.write(outputImage, "png", outputStream);
+                // Cleanup
+                outputStream.flush();
+                outGraphics.dispose();
+                log.info("Successfully got {} part bytes for {}", partName, skin.getUrl());
+                return outputStream.toByteArray();
+            }
+        } catch (Exception ex) {
+            log.error("Failed to get {} part bytes for {}", partName, skin.getUrl(), ex);
+            return null;
+        }
+    }
+}