make the skin renderer less bad (thanks bray)
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This commit is contained in:
Lee 2024-04-12 18:46:54 +01:00
parent 83a95fb26c
commit 2ea58d8080
71 changed files with 662 additions and 561 deletions

@ -1,41 +0,0 @@
package cc.fascinated.common;
import jakarta.validation.constraints.NotNull;
import lombok.extern.log4j.Log4j2;
import java.awt.*;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
@Log4j2
public class ImageUtils {
/**
* Resize an image.
*
* @param src the source image
* @param scale the scale factor
* @return the scaled image
*/
public static BufferedImage resize(@NotNull final BufferedImage src, final double scale) {
BufferedImage scaled = new BufferedImage((int) (src.getWidth() * scale), (int) (src.getHeight() * scale), BufferedImage.TYPE_INT_ARGB);
Graphics2D graphics = scaled.createGraphics();
graphics.drawImage(src, AffineTransform.getScaleInstance(scale, scale), null);
graphics.dispose();
return scaled;
}
/**
* Flip an image.
*
* @param src the source image
* @return the flipped image
*/
public static BufferedImage flip(@NotNull final BufferedImage src) {
BufferedImage flipped = new BufferedImage(src.getWidth(), src.getHeight(), BufferedImage.TYPE_INT_ARGB);
Graphics2D graphics = flipped.createGraphics();
graphics.drawImage(src, src.getWidth(), 0, 0, src.getHeight(), 0, 0, src.getWidth(), src.getHeight(), null);
graphics.dispose();
return flipped;
}
}

@ -1,233 +0,0 @@
package cc.fascinated.model.player;
import cc.fascinated.common.PlayerUtils;
import cc.fascinated.config.Config;
import cc.fascinated.exception.impl.BadRequestException;
import cc.fascinated.service.skin.SkinRenderer;
import cc.fascinated.service.skin.impl.BodyRenderer;
import cc.fascinated.service.skin.impl.HeadRenderer;
import cc.fascinated.service.skin.impl.IsometricHeadRenderer;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.gson.JsonObject;
import lombok.AllArgsConstructor;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.extern.log4j.Log4j2;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.util.HashMap;
import java.util.Map;
@AllArgsConstructor @NoArgsConstructor
@Getter @Log4j2
public class Skin {
/**
* The default skin, usually used when the skin is not found.
*/
public static final Skin DEFAULT_SKIN = new Skin("http://textures.minecraft.net/texture/60a5bd016b3c9a1b9272e4929e30827a67be4ebb219017adbbc4a4d22ebd5b1",
Model.DEFAULT);
/**
* The URL for the skin
*/
private String url;
/**
* The model for the skin
*/
private Model model;
/**
* The legacy status of the skin
*/
private boolean isLegacy = false;
/**
* The skin image for the skin
*/
@JsonIgnore
private byte[] skinImage;
/**
* The part URLs of the skin
*/
@JsonProperty("parts")
private Map<String, String> partUrls = new HashMap<>();
public Skin(String url, Model model) {
this.url = url;
this.model = model;
this.skinImage = PlayerUtils.getSkinImage(url);
if (this.skinImage != null) {
try {
BufferedImage image = ImageIO.read(new ByteArrayInputStream(this.skinImage));
if (image.getWidth() == 64 && image.getHeight() == 32) { // Using the old skin format
this.isLegacy = true;
}
} catch (Exception ignored) {}
}
}
/**
* Gets the skin from a {@link JsonObject}.
*
* @param json the JSON object
* @return the skin
*/
public static Skin fromJson(JsonObject json) {
if (json == null) {
return null;
}
String url = json.get("url").getAsString();
JsonObject metadata = json.getAsJsonObject("metadata");
Model model = Model.fromName(metadata == null ? "default" : // Fall back to slim if the model is not found
metadata.get("model").getAsString());
return new Skin(url, model);
}
/**
* Populates the part URLs for the skin.
*
* @param playerUuid the player's UUID
*/
public Skin populatePartUrls(String playerUuid) {
for (Parts part : Parts.values()) {
String partName = part.name().toLowerCase();
this.partUrls.put(partName, Config.INSTANCE.getWebPublicUrl() + "/player/" + partName + "/" + playerUuid);
}
return this;
}
/**
* The skin part enum that contains the
* information about the part.
*/
@Getter @AllArgsConstructor
public enum Parts {
FACE(new HeadRenderer()),
HEAD(new IsometricHeadRenderer()),
BODY(new BodyRenderer());
/**
* The skin part renderer for the part.
*/
private final SkinRenderer renderer;
/**
* Gets the name of the part.
*
* @return the name of the part
*/
public String getName() {
return this.name().toLowerCase();
}
/**
* Gets the skin part from its name.
*
* @param name the name of the part
* @return the skin part
* @throws BadRequestException if the part is not found
*/
public static Parts fromName(String name) throws BadRequestException {
for (Parts part : values()) {
if (part.name().equalsIgnoreCase(name)) {
return part;
}
}
throw new BadRequestException("Invalid part name: " + name);
}
}
@AllArgsConstructor @Getter
public enum PartPosition {
/**
* Skin positions
*/
HEAD_FACE(8, 8, 8, 8, null),
HEAD_TOP(8, 0, 8, 8, null),
HEAD_LEFT(0, 8, 8, 8, null),
BODY_FRONT(20, 20, 8, 12, null),
BODY_BACK(20, 36, 8, 12, null),
BODY_LEFT(32, 52, 8, 12, null),
BODY_RIGHT(44, 20, 8, 12, null),
RIGHT_ARM(44, 20, 4, 12, null),
LEFT_ARM(36, 52, 4, 12, new LegacySkinPosition(44, 20, true)),
RIGHT_LEG(4, 20, 4, 12, null),
LEFT_LEG(20, 52, 4, 12, new LegacySkinPosition(4, 20, true)),
/**
* Skin overlay (layer) positions
*/
HEAD_OVERLAY_FACE(40, 8, 8, 8, null),
HEAD_OVERLAY_TOP(40, 0, 8, 8, null),
HEAD_OVERLAY_LEFT(48, 8, 8, 8, null),
BODY_OVERLAY_FRONT(20, 36, 8, 12, null),
RIGHT_ARM_OVERLAY(44, 36, 8, 12, null),
LEFT_ARM_OVERLAY(52, 52, 8, 12, null),
RIGHT_LEG_OVERLAY(4, 36, 4, 12, null),
LEFT_LEG_OVERLAY(4, 52, 20, 12, null);
/**
* The x, and y position of the part.
*/
private final int x, y;
/**
* The width and height of the part.
*/
private final int width, height;
/**
* The legacy skin position of the part.
*/
private final LegacySkinPosition legacySkinPosition;
}
@AllArgsConstructor @Getter
public static class LegacySkinPosition {
/**
* The x, and y position of the part.
*/
private final int x, y;
/*
* Should the part be flipped horizontally?
*/
private final boolean flipped;
}
/**
* The model of the skin.
*/
public enum Model {
DEFAULT,
SLIM;
/**
* Gets the model from its name.
*
* @param name the name of the model
* @return the model
*/
public static Model fromName(String name) {
for (Model model : values()) {
if (model.name().equalsIgnoreCase(name)) {
return model;
}
}
return null;
}
}
}

@ -1,111 +0,0 @@
package cc.fascinated.service.skin;
import cc.fascinated.common.ImageUtils;
import cc.fascinated.exception.impl.BadRequestException;
import cc.fascinated.model.player.Skin;
import lombok.AllArgsConstructor;
import lombok.Getter;
import lombok.extern.log4j.Log4j2;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
@AllArgsConstructor @Getter @Log4j2
public abstract class SkinRenderer {
/**
* Gets the skin image.
*
* @param skin the skin
* @return the skin image
*/
public BufferedImage getSkinImage(Skin skin) {
try {
return ImageIO.read(new ByteArrayInputStream(skin.getSkinImage()));
} catch (Exception ex) {
return null;
}
}
/**
* Gets the skin part image.
*
* @param skin the skin
* @param position the part position information
* @param scale the scale
* @return the skin part image
*/
public BufferedImage getSkinPart(Skin skin, Skin.PartPosition position, double scale) {
try {
BufferedImage skinImage = this.getSkinImage(skin);
if (skinImage == null) {
return null;
}
int width = skin.getModel() == Skin.Model.SLIM && position.name().contains("ARM") ? position.getWidth() - 1 : position.getWidth();
BufferedImage part;
Skin.LegacySkinPosition legacySkinPosition = position.getLegacySkinPosition();
if (legacySkinPosition != null) {
part = skinImage.getSubimage(legacySkinPosition.getX(), legacySkinPosition.getY(), width, position.getHeight());
if (legacySkinPosition.isFlipped()) {
part = ImageUtils.flip(part);
}
} else {
part = skinImage.getSubimage(position.getX(), position.getY(), width, position.getHeight());
}
return ImageUtils.resize(part, scale);
} catch (Exception ex) {
return null;
}
}
/**
* Gets the bytes of an image.
*
* @param image the image
* @param skin the skin
* @param partName the part name
* @return the bytes
*/
public byte[] getBytes(BufferedImage image, Skin skin, String partName) throws BadRequestException {
try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
ImageIO.write(image, "png", outputStream);
// Cleanup
outputStream.flush();
log.info("Successfully got {} part bytes for {}", partName, skin.getUrl());
return outputStream.toByteArray();
} catch (Exception ex) {
throw new BadRequestException("Failed to get " + partName + " part bytes for " + skin.getUrl());
}
}
/**
* Applies an overlay (skin layer) to the head part.
*
* @param originalImage the original image
* @param part the part
*/
public void applyOverlay(BufferedImage originalImage, BufferedImage part) {
if (part == null) {
return;
}
try {
Graphics2D graphics = originalImage.createGraphics();
graphics.drawImage(part, 0, 0, null);
graphics.dispose();
} catch (Exception ignored) {} // We can safely ignore this
}
/**
* Renders a skin part.
*
* @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[] renderPart(Skin skin, String partName, boolean renderOverlay, int size) throws BadRequestException;
}

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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.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);
BufferedImage outputImage = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_ARGB);
Graphics2D graphics = outputImage.createGraphics();
// Get all the required body parts
BufferedImage face = this.getSkinPart(skin, Skin.PartPosition.HEAD_FACE, 1);
BufferedImage body = this.getSkinPart(skin, Skin.PartPosition.BODY_FRONT, 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
applyOverlay(face, this.getSkinPart(skin, Skin.PartPosition.HEAD_OVERLAY_FACE, 1));
applyOverlay(body, this.getSkinPart(skin, Skin.PartPosition.BODY_OVERLAY_FRONT, 1));
applyOverlay(rightArm, this.getSkinPart(skin, Skin.PartPosition.RIGHT_ARM_OVERLAY, 1));
applyOverlay(leftArm, this.getSkinPart(skin, Skin.PartPosition.LEFT_ARM_OVERLAY, 1));
applyOverlay(rightLeg, this.getSkinPart(skin, Skin.PartPosition.RIGHT_LEG_OVERLAY, 1));
applyOverlay(leftLeg, this.getSkinPart(skin, Skin.PartPosition.LEFT_LEG_OVERLAY, 1));
}
// Draw the body
graphics.drawImage(face, 4, 0, null);
graphics.drawImage(body, 4, 8, null);
graphics.drawImage(rightArm, skin.getModel() == Skin.Model.SLIM ? 1 : 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);
}
}

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package cc.fascinated.service.skin.impl;
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 HeadRenderer extends SkinRenderer {
@Override
public byte[] renderPart(Skin skin, String partName, boolean renderOverlay, int size) {
double scale = (double) size / 8d;
log.info("Getting {} part bytes for {} with size {} and scale {}", partName, skin.getUrl(), size, scale);
BufferedImage skinPart = this.getSkinPart(skin, Skin.PartPosition.HEAD_FACE, scale);
if (!renderOverlay) {
return super.getBytes(skinPart, skin, partName);
}
BufferedImage outputImage = new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB);
Graphics2D graphics = outputImage.createGraphics();
graphics.drawImage(skinPart, 0, 0, null);
// Apply the skin overlays
applyOverlay(outputImage, this.getSkinPart(skin, Skin.PartPosition.HEAD_OVERLAY_FACE, scale));
return super.getBytes(outputImage, skin, partName);
}
}

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package cc.fascinated.service.skin.impl;
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 IsometricHeadRenderer extends SkinRenderer {
private static final double SKEW_A = 26d / 45d; // 0.57777777
private static final double SKEW_B = SKEW_A * 2d; // 1.15555555
/**
* The head transforms
*/
private static final AffineTransform HEAD_TOP_TRANSFORM = new AffineTransform(1D, -SKEW_A, 1, SKEW_A, 0, 0);
private static final AffineTransform FACE_TRANSFORM = new AffineTransform(1D, -SKEW_A, 0D, SKEW_B, 0d, SKEW_A);
private static final AffineTransform HEAD_LEFT_TRANSFORM = new AffineTransform(1D, SKEW_A, 0D, SKEW_B, 0D, 0D);
@Override
public byte[] renderPart(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);
double zOffset = scale * 3.5d;
double xOffset = scale * 2d;
BufferedImage outputImage = new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB);
Graphics2D graphics = outputImage.createGraphics();
// Get all the required head parts
BufferedImage headTop = this.getSkinPart(skin, Skin.PartPosition.HEAD_TOP, scale);
BufferedImage headFront = this.getSkinPart(skin, Skin.PartPosition.HEAD_FACE, scale);
BufferedImage headLeft = this.getSkinPart(skin, Skin.PartPosition.HEAD_LEFT, scale);
if (renderOverlay) { // Render the skin layers
applyOverlay(headTop, this.getSkinPart(skin, Skin.PartPosition.HEAD_OVERLAY_TOP, scale));
applyOverlay(headFront, this.getSkinPart(skin, Skin.PartPosition.HEAD_OVERLAY_FACE, scale));
applyOverlay(headLeft, this.getSkinPart(skin, Skin.PartPosition.HEAD_OVERLAY_LEFT, scale));
}
// Draw the top of the left
drawPart(graphics, headTop, HEAD_TOP_TRANSFORM, -0.5 - zOffset, xOffset + zOffset, headTop.getWidth(), headTop.getHeight() + 2);
// Draw the face of the head
double x = xOffset + 8 * scale;
drawPart(graphics, headFront, FACE_TRANSFORM, x, x + zOffset - 0.5, headFront.getWidth(), headFront.getHeight());
// Draw the left side of the head
drawPart(graphics, headLeft, HEAD_LEFT_TRANSFORM, xOffset + 1, zOffset - 0.5, headLeft.getWidth(), headLeft.getHeight());
return super.getBytes(outputImage, skin, partName);
}
/**
* Draws a part of the head.
*
* @param graphics the graphics
* @param part the part
* @param transform the transform
* @param x the x position
* @param y the y position
* @param width the width
* @param height the height
*/
private void drawPart(Graphics2D graphics, BufferedImage part, AffineTransform transform, double x, double y, int width, int height) {
graphics.setTransform(transform);
graphics.drawImage(part, (int) x, (int) y, width, height, null);
}
}

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package cc.fascinated.common;
import jakarta.validation.constraints.NotNull;
import lombok.SneakyThrows;
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;
import java.io.IOException;
@Log4j2
public class ImageUtils {
/**
* Scale the given image to the provided size.
*
* @param image the image to scale
* @param size the size to scale the image to
* @return the scaled image
*/
public static BufferedImage resize(BufferedImage image, double size) {
BufferedImage scaled = new BufferedImage((int) (image.getWidth() * size), (int) (image.getHeight() * size), BufferedImage.TYPE_INT_ARGB);
Graphics2D graphics = scaled.createGraphics();
graphics.drawImage(image, AffineTransform.getScaleInstance(size, size), null);
graphics.dispose();
return scaled;
}
/**
* Flip the given image.
*
* @param image the image to flip
* @return the flipped image
*/
public static BufferedImage flip(@NotNull final BufferedImage image) {
BufferedImage flipped = new BufferedImage(image.getWidth(), image.getHeight(), BufferedImage.TYPE_INT_ARGB);
Graphics2D graphics = flipped.createGraphics();
graphics.drawImage(image, image.getWidth(), 0, 0, image.getHeight(), 0, 0, image.getWidth(), image.getHeight(), null);
graphics.dispose();
return flipped;
}
/**
* Convert an image to bytes.
*
* @param image the image to convert
* @return the image as bytes
*/
@SneakyThrows
public static byte[] imageToBytes(BufferedImage image) {
try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
ImageIO.write(image, "png", outputStream);
return outputStream.toByteArray();
}
}
}

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package cc.fascinated.common.renderer;
import cc.fascinated.model.skin.ISkinPart;
import java.awt.*;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
public abstract class IsometricSkinRenderer<T extends ISkinPart> extends SkinRenderer<T> {
/**
* Draw a part onto the texture.
*
* @param graphics the graphics to draw to
* @param partImage the part image to draw
* @param transform the transform to apply
* @param x the x position to draw at
* @param y the y position to draw at
* @param width the part image width
* @param height the part image height
*/
protected final void drawPart(Graphics2D graphics, BufferedImage partImage, AffineTransform transform,
double x, double y, int width, int height) {
graphics.setTransform(transform);
graphics.drawImage(partImage, (int) x, (int) y, width, height, null);
}
}

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package cc.fascinated.common.renderer;
import cc.fascinated.common.ImageUtils;
import cc.fascinated.model.skin.ISkinPart;
import cc.fascinated.model.skin.Skin;
import lombok.SneakyThrows;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
public abstract class SkinRenderer<T extends ISkinPart> {
/**
* Get the texture of a part of a skin.
*
* @param skin the skin to get the part texture from
* @param part the part of the skin to get
* @param size the size to scale the texture to
* @return the texture of the skin part
*/
@SneakyThrows
public BufferedImage getVanillaSkinPart(Skin skin, ISkinPart.Vanilla part, double size) {
ISkinPart.Vanilla.Coordinates coordinates = part.getCoordinates(); // The coordinates of the part
// The skin texture is legacy, use legacy coordinates
if (skin.isLegacy() && part.hasLegacyCoordinates()) {
coordinates = part.getLegacyCoordinates();
}
int width = part.getWidth(); // The width of the part
if (skin.getModel() == Skin.Model.SLIM && part.isFrontArm()) {
width--;
}
BufferedImage skinImage = ImageIO.read(new ByteArrayInputStream(skin.getSkinImage())); // The skin texture
BufferedImage partTexture = getSkinPartTexture(skinImage, coordinates.getX(), coordinates.getY(), width, part.getHeight(), size);
if (coordinates instanceof ISkinPart.Vanilla.LegacyCoordinates legacyCoordinates && legacyCoordinates.isFlipped()) {
partTexture = ImageUtils.flip(partTexture);
}
return partTexture;
}
/**
* Get the texture of a specific part of the skin.
*
* @param skinImage the skin image to get the part from
* @param x the x position of the part
* @param y the y position of the part
* @param width the width of the part
* @param height the height of the part
* @param size the size to scale the part to
* @return the texture of the skin part
*/
@SneakyThrows
private BufferedImage getSkinPartTexture(BufferedImage skinImage, int x, int y, int width, int height, double size) {
// Create a new BufferedImage for the part of the skin texture
BufferedImage headTexture = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
// Crop just the part we want based on our x, y, width, and height
headTexture.getGraphics().drawImage(skinImage, 0, 0, width, height, x, y, x + width, y + height, null);
// Scale the skin part texture
if (size > 0D) {
headTexture = ImageUtils.resize(headTexture, size);
}
return headTexture;
}
/**
* Apply an overlay to a texture.
*
* @param graphics the graphics to overlay on
* @param overlayImage the part to overlay
*/
protected void applyOverlay(Graphics2D graphics, BufferedImage overlayImage) {
try {
graphics.drawImage(overlayImage, 0, 0, null);
graphics.dispose();
} catch (Exception ignored) {
// We can safely ignore this, legacy
// skins don't have overlays
}
}
/**
* Renders the skin part for the player's skin.
*
* @param skin the player's skin
* @param part the skin part to render
* @param renderOverlays should the overlays be rendered
* @param size the size of the part
* @return the rendered skin part
*/
public abstract BufferedImage render(Skin skin, T part, boolean renderOverlays, int size);
}

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package cc.fascinated.common.renderer.impl;
import cc.fascinated.common.ImageUtils;
import cc.fascinated.common.renderer.SkinRenderer;
import cc.fascinated.model.skin.ISkinPart;
import cc.fascinated.model.skin.Skin;
import lombok.AllArgsConstructor;
import lombok.Getter;
import lombok.extern.log4j.Log4j2;
import java.awt.*;
import java.awt.image.BufferedImage;
@AllArgsConstructor @Getter @Log4j2
public class BodyRenderer extends SkinRenderer<ISkinPart.Custom> {
public static final BodyRenderer INSTANCE = new BodyRenderer();
@Override
public BufferedImage render(Skin skin, ISkinPart.Custom part, boolean renderOverlays, int size) {
BufferedImage texture = new BufferedImage(16, 32, BufferedImage.TYPE_INT_ARGB); // The texture to return
Graphics2D graphics = texture.createGraphics(); // Create the graphics for drawing
// Get the Vanilla skin parts to draw
BufferedImage face = getVanillaSkinPart(skin, ISkinPart.Vanilla.FACE, -1);
BufferedImage body = getVanillaSkinPart(skin, ISkinPart.Vanilla.BODY_FRONT, -1);
BufferedImage leftArm = getVanillaSkinPart(skin, ISkinPart.Vanilla.LEFT_ARM_FRONT, -1);
BufferedImage rightArm = getVanillaSkinPart(skin, ISkinPart.Vanilla.RIGHT_ARM_FRONT, -1);
BufferedImage leftLeg = getVanillaSkinPart(skin, ISkinPart.Vanilla.LEFT_LEG_FRONT, -1);
BufferedImage rightLeg = getVanillaSkinPart(skin, ISkinPart.Vanilla.RIGHT_LEG_FRONT, -1);
// Draw the body parts
graphics.drawImage(face, 4, 0, null);
graphics.drawImage(body, 4, 8, null);
graphics.drawImage(leftArm, skin.getModel() == Skin.Model.SLIM ? 1 : 0, 8, null);
graphics.drawImage(rightArm, 12, 8, null);
graphics.drawImage(leftLeg, 8, 20, null);
graphics.drawImage(rightLeg, 4, 20, null);
graphics.dispose();
return ImageUtils.resize(texture, (double) size / 32);
}
}

@ -0,0 +1,48 @@
package cc.fascinated.common.renderer.impl;
import cc.fascinated.common.renderer.IsometricSkinRenderer;
import cc.fascinated.model.skin.ISkinPart;
import cc.fascinated.model.skin.Skin;
import java.awt.*;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
public class IsometricHeadRenderer extends IsometricSkinRenderer<ISkinPart.Custom> {
public static final IsometricHeadRenderer INSTANCE = new IsometricHeadRenderer();
private static final double SKEW_A = 26D / 45D; // 0.57777777
private static final double SKEW_B = SKEW_A * 2D; // 1.15555555
private static final AffineTransform HEAD_TOP_TRANSFORM = new AffineTransform(1D, -SKEW_A, 1, SKEW_A, 0, 0);
private static final AffineTransform FACE_TRANSFORM = new AffineTransform(1D, -SKEW_A, 0D, SKEW_B, 0d, SKEW_A);
private static final AffineTransform HEAD_LEFT_TRANSFORM = new AffineTransform(1D, SKEW_A, 0D, SKEW_B, 0D, 0D);
@Override
public BufferedImage render(Skin skin, ISkinPart.Custom part, boolean renderOverlays, int size) {
double scale = (size / 8D) / 2.5;
double zOffset = scale * 3.5D;
double xOffset = scale * 2D;
BufferedImage texture = new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB); // The texture to return
Graphics2D graphics = texture.createGraphics(); // Create the graphics for drawing
// Get the Vanilla skin parts to draw
BufferedImage headTop = getVanillaSkinPart(skin, ISkinPart.Vanilla.HEAD_TOP, scale);
BufferedImage face = getVanillaSkinPart(skin, ISkinPart.Vanilla.FACE, scale);
BufferedImage headLeft = getVanillaSkinPart(skin, ISkinPart.Vanilla.HEAD_LEFT, scale);
// Draw the top head part
drawPart(graphics, headTop, HEAD_TOP_TRANSFORM, -0.5 - zOffset, xOffset + zOffset, headTop.getWidth(), headTop.getHeight() + 2);
// Draw the face part
double x = xOffset + 8 * scale;
drawPart(graphics, face, FACE_TRANSFORM, x, x + zOffset - 0.5, face.getWidth(), face.getHeight());
// Draw the left head part
drawPart(graphics, headLeft, HEAD_LEFT_TRANSFORM, xOffset + 1, zOffset - 0.5, headLeft.getWidth(), headLeft.getHeight());
graphics.dispose();
return texture;
}
}

@ -0,0 +1,39 @@
package cc.fascinated.common.renderer.impl;
import cc.fascinated.common.renderer.SkinRenderer;
import cc.fascinated.model.skin.ISkinPart;
import cc.fascinated.model.skin.Skin;
import lombok.AllArgsConstructor;
import lombok.Getter;
import lombok.extern.log4j.Log4j2;
import java.awt.*;
import java.awt.image.BufferedImage;
@AllArgsConstructor @Getter @Log4j2
public class SquareRenderer extends SkinRenderer<ISkinPart.Vanilla> {
public static final SquareRenderer INSTANCE = new SquareRenderer();
@Override
public BufferedImage render(Skin skin, ISkinPart.Vanilla part, boolean renderOverlays, int size) {
double scale = size / 8D;
BufferedImage partImage = getVanillaSkinPart(skin, part, scale); // Get the part image
if (!renderOverlays) { // Not rendering overlays
return partImage;
}
// Create a new image, draw our skin part texture, and then apply overlays
BufferedImage texture = new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB); // The texture to return
Graphics2D graphics = texture.createGraphics(); // Create the graphics for drawing
graphics.drawImage(partImage, 0, 0, null);
// Draw part overlays
ISkinPart.Vanilla[] overlayParts = part.getOverlays();
if (overlayParts != null) {
for (ISkinPart.Vanilla overlay : overlayParts) {
applyOverlay(graphics, getVanillaSkinPart(skin, overlay, scale));
}
}
graphics.dispose();
return texture;
}
}

@ -2,7 +2,7 @@ package cc.fascinated.controller;
import cc.fascinated.model.cache.CachedPlayer;
import cc.fascinated.model.cache.CachedPlayerName;
import cc.fascinated.model.player.Skin;
import cc.fascinated.model.skin.Skin;
import cc.fascinated.service.PlayerService;
import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.tags.Tag;
@ -52,7 +52,6 @@ public class PlayerController {
@Parameter(description = "Whether to render the skin overlay (skin layers)", example = "false") @RequestParam(required = false, defaultValue = "false") boolean overlay,
@Parameter(description = "Whether to download the image") @RequestParam(required = false, defaultValue = "false") boolean download) {
CachedPlayer player = playerService.getPlayer(id);
Skin.Parts skinPart = Skin.Parts.fromName(part);
String dispositionHeader = download ? "attachment; filename=%s.png" : "inline; filename=%s.png";
// Return the part image
@ -60,6 +59,6 @@ public class PlayerController {
.cacheControl(cacheControl)
.contentType(MediaType.IMAGE_PNG)
.header(HttpHeaders.CONTENT_DISPOSITION, dispositionHeader.formatted(player.getUsername()))
.body(playerService.getSkinPart(player, skinPart, overlay, size).getBytes());
.body(playerService.getSkinPart(player, part, overlay, size).getBytes());
}
}

@ -3,7 +3,7 @@ package cc.fascinated.model.cache;
import cc.fascinated.model.mojang.MojangProfile;
import cc.fascinated.model.player.Cape;
import cc.fascinated.model.player.Player;
import cc.fascinated.model.player.Skin;
import cc.fascinated.model.skin.Skin;
import lombok.Getter;
import lombok.Setter;
import lombok.ToString;

@ -4,7 +4,7 @@ import cc.fascinated.Main;
import cc.fascinated.common.Tuple;
import cc.fascinated.common.UUIDUtils;
import cc.fascinated.model.player.Cape;
import cc.fascinated.model.player.Skin;
import cc.fascinated.model.skin.Skin;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.google.gson.JsonObject;
import lombok.AllArgsConstructor;

@ -3,6 +3,7 @@ package cc.fascinated.model.player;
import cc.fascinated.common.Tuple;
import cc.fascinated.common.UUIDUtils;
import cc.fascinated.model.mojang.MojangProfile;
import cc.fascinated.model.skin.Skin;
import lombok.AllArgsConstructor;
import lombok.Getter;
import org.springframework.data.annotation.Id;

@ -0,0 +1,199 @@
package cc.fascinated.model.skin;
import cc.fascinated.common.renderer.SkinRenderer;
import cc.fascinated.common.renderer.impl.BodyRenderer;
import cc.fascinated.common.renderer.impl.IsometricHeadRenderer;
import cc.fascinated.common.renderer.impl.SquareRenderer;
import lombok.AllArgsConstructor;
import lombok.Getter;
import java.awt.image.BufferedImage;
public interface ISkinPart {
Enum<?>[][] TYPES = { Vanilla.values(), Custom.values() };
/**
* The name of the part.
*
* @return the part name
*/
String name();
/**
* Should this part be hidden from the
* player skin part urls list?
*
* @return whether this part should be hidden
*/
boolean hidden();
/**
* Renders the skin part for the skin.
*
* @param skin the skin
* @param renderOverlays should the overlays be rendered
* @param size the size of the part
* @return the rendered skin part
*/
BufferedImage render(Skin skin, boolean renderOverlays, int size);
/**
* Get a skin part by the given name.
*
* @param name the name of the part
* @return the part, null if none
*/
static ISkinPart getByName(String name) {
name = name.toUpperCase();
for (Enum<?>[] type : TYPES) {
for (Enum<?> part : type) {
if (!part.name().equals(name)) {
continue;
}
return (ISkinPart) part;
}
}
return null;
}
@Getter
enum Vanilla implements ISkinPart {
// Overlays
HEAD_OVERLAY_FACE(true, new Coordinates(40, 8), 8, 8),
// Head
HEAD_TOP(true, new Coordinates(8, 0), 8, 8),
FACE(false, new Coordinates(8, 8), 8, 8, HEAD_OVERLAY_FACE),
HEAD_LEFT(true, new Coordinates(0, 8), 8, 8),
HEAD_RIGHT(true, new Coordinates(16, 8), 8, 8),
HEAD_BOTTOM(true, new Coordinates(16, 0), 8, 8),
HEAD_BACK(true, new Coordinates(24, 8), 8, 8),
// Body
BODY_FRONT(true, new Coordinates(20, 20), 8, 12),
// Arms
LEFT_ARM_TOP(true, new Coordinates(36, 48), 4, 4),
RIGHT_ARM_TOP(true, new Coordinates(44, 16), 4, 4),
LEFT_ARM_FRONT(true, new Coordinates(44, 20), 4, 12),
RIGHT_ARM_FRONT(true, new Coordinates(36, 52), new LegacyCoordinates(44, 20, true), 4, 12),
// Legs
LEFT_LEG_FRONT(true, new Coordinates(4, 20), 4, 12), // Front
RIGHT_LEG_FRONT(true, new Coordinates(20, 52), new LegacyCoordinates(4, 20, true), 4, 12); // Front
/**
* Should this part be hidden from the
* player skin part urls list?
*/
private final boolean hidden;
/**
* The coordinates of the part.
*/
private final Coordinates coordinates;
/**
* The legacy coordinates of the part.
*/
private final LegacyCoordinates legacyCoordinates;
/**
* The width and height of the part.
*/
private final int width, height;
/**
* The overlays of the part.
*/
private final Vanilla[] overlays;
Vanilla(boolean hidden, Coordinates coordinates, int width, int height, Vanilla... overlays) {
this(hidden, coordinates, null, width, height, overlays);
}
Vanilla(boolean hidden, Coordinates coordinates, LegacyCoordinates legacyCoordinates, int width, int height, Vanilla... overlays) {
this.hidden = hidden;
this.coordinates = coordinates;
this.legacyCoordinates = legacyCoordinates;
this.width = width;
this.height = height;
this.overlays = overlays;
}
@Override
public boolean hidden() {
return this.isHidden();
}
@Override
public BufferedImage render(Skin skin, boolean renderOverlays, int size) {
return SquareRenderer.INSTANCE.render(skin, this, renderOverlays, size);
}
/**
* Is this part a front arm?
*
* @return whether this part is a front arm
*/
public boolean isFrontArm() {
return this == LEFT_ARM_FRONT || this == RIGHT_ARM_FRONT;
}
/**
* Does this part have legacy coordinates?
*
* @return whether this part has legacy coordinates
*/
public boolean hasLegacyCoordinates() {
return legacyCoordinates != null;
}
@AllArgsConstructor @Getter
public static class Coordinates {
/**
* The X and Y position of the part.
*/
private final int x, y;
}
@Getter
public static class LegacyCoordinates extends Coordinates {
/**
* Should the part be flipped horizontally?
*/
private final boolean flipped;
public LegacyCoordinates(int x, int y) {
this(x, y, false);
}
public LegacyCoordinates(int x, int y, boolean flipped) {
super(x, y);
this.flipped = flipped;
}
}
}
@AllArgsConstructor @Getter
enum Custom implements ISkinPart {
HEAD(IsometricHeadRenderer.INSTANCE),
BODY(BodyRenderer.INSTANCE);
/**
* The renderer to use for this part
*/
private final SkinRenderer<Custom> renderer;
@Override
public boolean hidden() {
return false;
}
@Override
public BufferedImage render(Skin skin, boolean renderOverlays, int size) {
return renderer.render(skin, this, renderOverlays, size);
}
}
}

@ -0,0 +1,128 @@
package cc.fascinated.model.skin;
import cc.fascinated.common.PlayerUtils;
import cc.fascinated.config.Config;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.gson.JsonObject;
import lombok.AllArgsConstructor;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.extern.log4j.Log4j2;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.util.HashMap;
import java.util.Map;
@AllArgsConstructor @NoArgsConstructor
@Getter @Log4j2
public class Skin {
/**
* The default skin, usually used when the skin is not found.
*/
public static final Skin DEFAULT_SKIN = new Skin("http://textures.minecraft.net/texture/60a5bd016b3c9a1b9272e4929e30827a67be4ebb219017adbbc4a4d22ebd5b1",
Model.DEFAULT);
/**
* The URL for the skin
*/
private String url;
/**
* The model for the skin
*/
private Model model;
/**
* The legacy status of the skin
*/
private boolean isLegacy = false;
/**
* The skin image for the skin
*/
@JsonIgnore
private byte[] skinImage;
/**
* The part URLs of the skin
*/
@JsonProperty("parts")
private Map<String, String> partUrls = new HashMap<>();
public Skin(String url, Model model) {
this.url = url;
this.model = model;
this.skinImage = PlayerUtils.getSkinImage(url);
if (this.skinImage != null) {
try {
BufferedImage image = ImageIO.read(new ByteArrayInputStream(this.skinImage));
if (image.getWidth() == 64 && image.getHeight() == 32) { // Using the old skin format
this.isLegacy = true;
}
} catch (Exception ignored) {}
}
}
/**
* Gets the skin from a {@link JsonObject}.
*
* @param json the JSON object
* @return the skin
*/
public static Skin fromJson(JsonObject json) {
if (json == null) {
return null;
}
String url = json.get("url").getAsString();
JsonObject metadata = json.getAsJsonObject("metadata");
Model model = Model.fromName(metadata == null ? "default" : // Fall back to slim if the model is not found
metadata.get("model").getAsString());
return new Skin(url, model);
}
/**
* Populates the part URLs for the skin.
*
* @param playerUuid the player's UUID
*/
public Skin populatePartUrls(String playerUuid) {
for (Enum<?>[] type : ISkinPart.TYPES) {
for (Enum<?> part : type) {
ISkinPart skinPart = (ISkinPart) part;
if (skinPart.hidden()) {
continue;
}
String partName = part.name().toLowerCase();
this.partUrls.put(partName, Config.INSTANCE.getWebPublicUrl() + "/player/" + partName + "/" + playerUuid);
}
}
return this;
}
/**
* The model of the skin.
*/
public enum Model {
DEFAULT,
SLIM;
/**
* Gets the model from its name.
*
* @param name the name of the model
* @return the model
*/
public static Model fromName(String name) {
for (Model model : values()) {
if (model.name().equalsIgnoreCase(name)) {
return model;
}
}
return null;
}
}
}

@ -1,5 +1,6 @@
package cc.fascinated.service;
import cc.fascinated.common.ImageUtils;
import cc.fascinated.common.PlayerUtils;
import cc.fascinated.common.Tuple;
import cc.fascinated.common.UUIDUtils;
@ -14,7 +15,8 @@ import cc.fascinated.model.mojang.MojangProfile;
import cc.fascinated.model.mojang.MojangUsernameToUuid;
import cc.fascinated.model.player.Cape;
import cc.fascinated.model.player.Player;
import cc.fascinated.model.player.Skin;
import cc.fascinated.model.skin.ISkinPart;
import cc.fascinated.model.skin.Skin;
import cc.fascinated.repository.PlayerCacheRepository;
import cc.fascinated.repository.PlayerNameCacheRepository;
import cc.fascinated.repository.PlayerSkinPartCacheRepository;
@ -22,6 +24,7 @@ import lombok.extern.log4j.Log4j2;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.awt.image.BufferedImage;
import java.util.Optional;
import java.util.UUID;
@ -119,33 +122,41 @@ public class PlayerService {
* Gets a skin part from the player's skin.
*
* @param player the player
* @param part the part of the skin
* @param partName the name of the part
* @param renderOverlay whether to render the overlay
* @return the skin part
*/
public CachedPlayerSkinPart getSkinPart(Player player, Skin.Parts part, boolean renderOverlay, int size) {
public CachedPlayerSkinPart getSkinPart(Player player, String partName, boolean renderOverlay, int size) {
if (size > 512) {
log.info("Size {} is too large, setting to 512", size);
size = 512;
}
log.info("Getting skin part {} for player: {}", part.getName(), player.getUniqueId());
String key = "%s-%s-%s".formatted(player.getUniqueId(), part.getName(), size);
ISkinPart part = ISkinPart.getByName(partName); // The skin part to get
if (part == null) { // Default to the face
part = ISkinPart.Vanilla.FACE;
log.warn("Invalid skin part {}, defaulting to {}", partName, part.name());
}
log.info("Getting skin part {} for player: {}", part.name(), player.getUniqueId());
String key = "%s-%s-%s-%s".formatted(player.getUniqueId(), part.name(), size, renderOverlay);
Optional<CachedPlayerSkinPart> cache = playerSkinPartCacheRepository.findById(key);
// The skin part is cached
if (cache.isPresent() && Config.INSTANCE.isProduction()) {
log.info("Skin part {} for player {} is cached", part.getName(), player.getUniqueId());
log.info("Skin part {} for player {} is cached", part.name(), player.getUniqueId());
return cache.get();
}
long before = System.currentTimeMillis();
byte[] skinPartBytes = part.getRenderer().renderPart(player.getSkin(), part.getName(), renderOverlay, size);
log.info("Took {}ms to render skin part {} for player: {}", System.currentTimeMillis() - before, part.getName(), player.getUniqueId());
BufferedImage renderedPart = part.render(player.getSkin(), renderOverlay, size); // Render the skin part
log.info("Took {}ms to render skin part {} for player: {}", System.currentTimeMillis() - before, part.name(), player.getUniqueId());
byte[] skinPartBytes = ImageUtils.imageToBytes(renderedPart); // Convert the image to bytes
CachedPlayerSkinPart skinPart = new CachedPlayerSkinPart(
key,
skinPartBytes
);
log.info("Fetched skin part {} for player: {}", part.getName(), player.getUniqueId());
log.info("Fetched skin part {} for player: {}", part.name(), player.getUniqueId());
playerSkinPartCacheRepository.save(skinPart);
return skinPart;

@ -1,7 +1,7 @@
package cc.fascinated.tests;
import cc.fascinated.config.TestRedisConfig;
import cc.fascinated.model.player.Skin;
import cc.fascinated.model.skin.Skin;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;