Created CustomObjectRenderer to allow for BufferedImages to be rendered at a given Position. This supports Zoom and Rotation on all 3 axes.

src/main/java/eu/crushedpixel/replaymod/holders/CustomImageObject.java

@@ -0,0 +1,57 @@
+package eu.crushedpixel.replaymod.holders;
+
+import eu.crushedpixel.replaymod.registry.ResourceHelper;
+import lombok.Getter;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.renderer.texture.DynamicTexture;
+import net.minecraft.util.ResourceLocation;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+
+public class CustomImageObject {
+
+    public CustomImageObject(Position position, String name, File imageSource) throws IOException {
+        BufferedImage bufferedImage = ImageIO.read(imageSource);
+
+        this.textureWidth = bufferedImage.getWidth();
+        this.textureHeight = bufferedImage.getHeight();
+
+        float w;
+        float h;
+
+        if(bufferedImage.getWidth() > bufferedImage.getHeight()) {
+            w = 1;
+            h = (bufferedImage.getHeight()/(float)bufferedImage.getWidth());
+        } else {
+            w = (bufferedImage.getWidth()/(float)bufferedImage.getHeight());
+            h = 1;
+        }
+
+        this.position = new ExtendedPosition(position.getX(), position.getY(), position.getZ(), w, h);
+        this.name = name;
+
+        this.resourceLocation = new ResourceLocation("customImages/"+imageSource.getAbsolutePath());
+        this.dynamicTexture = new DynamicTexture(bufferedImage);
+    }
+
+    @Getter private ExtendedPosition position;
+    @Getter private String name;
+
+    private ResourceLocation resourceLocation;
+    private DynamicTexture dynamicTexture;
+
+    @Getter private float textureWidth, textureHeight;
+
+    public ResourceLocation getResourceLocation() {
+        if(!ResourceHelper.isRegistered(resourceLocation)) {
+            ResourceHelper.registerResource(resourceLocation);
+            Minecraft.getMinecraft().getTextureManager().loadTexture(resourceLocation, dynamicTexture);
+            dynamicTexture.updateDynamicTexture();
+        }
+
+        return resourceLocation;
+    }
+}

src/main/java/eu/crushedpixel/replaymod/holders/ExtendedPosition.java

@@ -0,0 +1,18 @@
+package eu.crushedpixel.replaymod.holders;
+
+import lombok.Data;
+
+@Data
+public class ExtendedPosition extends Position {
+
+    public ExtendedPosition(double x, double y, double z, float width, float height) {
+        super(x, y, z, 0, 0);
+        this.width = width;
+        this.height = height;
+    }
+
+    private float anchorX, anchorY;
+    private float width, height;
+    private float scale = 1f;
+
+}