Improved texture gen system, mech icon generation

packer/src/io/anuke/mindustry/Image.java

@@ -0,0 +1,88 @@
+package io.anuke.mindustry;
+
+import com.badlogic.gdx.graphics.g2d.TextureRegion;
+
+import javax.imageio.ImageIO;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
+
+public class Image {
+    private static ArrayList<Image> toDispose = new ArrayList<>();
+
+    private BufferedImage atlas;
+
+    private BufferedImage image;
+    private Graphics2D graphics;
+
+    public Image(BufferedImage atlas, TextureRegion region){
+        this.atlas = atlas;
+
+        this.image = new BufferedImage(region.getRegionWidth(), region.getRegionHeight(), BufferedImage.TYPE_INT_ARGB);
+        this.graphics = image.createGraphics();
+
+        draw(region);
+
+        toDispose.add(this);
+    }
+
+    /**Draws a region at the top left corner.*/
+    public void draw(TextureRegion region){
+        draw(region, 0, 0, false, false);
+    }
+
+    /**Draws an image at the top left corner.*/
+    public void draw(Image image){
+        graphics.drawImage(image.image, 0, 0, null);
+    }
+
+    public void draw(TextureRegion region, boolean flipx, boolean flipy){
+        draw(region, 0, 0, flipx, flipy);
+    }
+
+    public void draw(TextureRegion region, int x, int y, boolean flipx, boolean flipy){
+        int ofx = 0, ofy = 0;
+
+        if(x < 0){
+            ofx = x;
+            x = 0;
+        }
+
+        if(y < 0){
+            ofy = y;
+            y = 0;
+        }
+
+        graphics.drawImage(atlas,
+                x, y,
+                x + region.getRegionWidth(),
+                y + region.getRegionHeight(),
+                (flipx ? region.getRegionX() + region.getRegionWidth() : region.getRegionX()) + ofx,
+                (flipy ? region.getRegionY() + region.getRegionHeight() : region.getRegionY()) + ofy,
+                (flipx ? region.getRegionX() : region.getRegionX() + region.getRegionWidth()) + ofx,
+                (flipy ? region.getRegionY() : region.getRegionY() + region.getRegionHeight()) + ofy,
+                null);
+    }
+
+    /** @param name Name of texture file name to create, without any extensions.*/
+    public void save(String name){
+        try {
+            ImageIO.write(image, "png", new File(name + ".png"));
+        }catch (IOException e){
+            throw new RuntimeException(e);
+        }
+    }
+
+    public static int total(){
+        return toDispose.size();
+    }
+
+    public static void dispose(){
+        for(Image image : toDispose){
+            image.graphics.dispose();
+        }
+        toDispose.clear();
+    }
+}