add head endpoint and finish the body renderer

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

@@ -0,0 +1,55 @@
+package cc.fascinated.service.skin.impl;
+
+import cc.fascinated.common.ImageUtils;
+import cc.fascinated.model.player.Skin;
+import cc.fascinated.service.skin.SkinRenderer;
+import lombok.Getter;
+import lombok.extern.log4j.Log4j2;
+
+import java.awt.*;
+import java.awt.geom.AffineTransform;
+import java.awt.image.BufferedImage;
+
+@Getter @Log4j2
+public class BodyRenderer extends SkinRenderer {
+
+    private static final int WIDTH = 16;
+    private static final int HEIGHT = 32;
+
+    @Override
+    public byte[] renderPart(Skin skin, String partName, boolean renderOverlay, int size) {
+        log.info("Getting {} part bytes for {} with size {}", partName, skin.getUrl(), size);
+        try {
+            BufferedImage outputImage = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_ARGB);
+            Graphics2D graphics = outputImage.createGraphics();
+
+            // Get all the required body parts
+            BufferedImage head = this.getSkinPart(skin, Skin.PartPosition.HEAD, 1);
+            BufferedImage body = this.getSkinPart(skin, Skin.PartPosition.BODY, 1);
+            BufferedImage rightArm = this.getSkinPart(skin, Skin.PartPosition.RIGHT_ARM, 1);
+            BufferedImage leftArm = this.getSkinPart(skin, Skin.PartPosition.LEFT_ARM, 1);
+            BufferedImage rightLeg = this.getSkinPart(skin, Skin.PartPosition.RIGHT_LEG, 1);
+            BufferedImage leftLeg = this.getSkinPart(skin, Skin.PartPosition.LEFT_LEG, 1);
+
+            if (renderOverlay) { // Render the skin layers
+                Graphics2D overlayGraphics = head.createGraphics();
+
+                applyOverlay(overlayGraphics, this.getSkinPart(skin, Skin.PartPosition.HEAD_OVERLAY, 1));
+            }
+
+            // Draw the body
+            graphics.drawImage(head, 4, 0, null);
+            graphics.drawImage(body, 4, 8, null);
+            graphics.drawImage(rightArm, 0, 8, null);
+            graphics.drawImage(leftArm, 12, 8, null);
+            graphics.drawImage(rightLeg, 4, 20, null);
+            graphics.drawImage(leftLeg, 8, 20, null);
+
+            graphics.dispose(); // Clean up
+            return super.getBytes(ImageUtils.resize(outputImage, (double) size / HEIGHT), skin, partName);
+        } catch (Exception ex) {
+            log.error("Failed to get {} part bytes for {}", partName, skin.getUrl(), ex);
+            throw new RuntimeException("Failed to get " + partName + " part for " + skin.getUrl());
+        }
+    }
+}