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      1 package com.jme3.util;
      2 
      3 import com.jme3.asset.AssetManager;
      4 import com.jme3.audio.AudioBuffer;
      5 import com.jme3.audio.AudioData;
      6 import com.jme3.material.Material;
      7 import com.jme3.math.ColorRGBA;
      8 import com.jme3.scene.Geometry;
      9 import com.jme3.scene.Spatial;
     10 import com.jme3.scene.shape.Box;
     11 import com.jme3.texture.Image;
     12 import com.jme3.texture.Image.Format;
     13 import java.nio.ByteBuffer;
     14 
     15 public class PlaceholderAssets {
     16 
     17     /**
     18      * Checkerboard of white and red squares
     19      */
     20     private static final byte[] imageData = {
     21         (byte)0xFF, (byte)0xFF, (byte)0xFF,
     22         (byte)0xFF, (byte)0x00, (byte)0x00,
     23         (byte)0xFF, (byte)0xFF, (byte)0xFF,
     24         (byte)0xFF, (byte)0x00, (byte)0x00,
     25 
     26         (byte)0xFF, (byte)0x00, (byte)0x00,
     27         (byte)0xFF, (byte)0xFF, (byte)0xFF,
     28         (byte)0xFF, (byte)0x00, (byte)0x00,
     29         (byte)0xFF, (byte)0xFF, (byte)0xFF,
     30 
     31         (byte)0xFF, (byte)0xFF, (byte)0xFF,
     32         (byte)0xFF, (byte)0x00, (byte)0x00,
     33         (byte)0xFF, (byte)0xFF, (byte)0xFF,
     34         (byte)0xFF, (byte)0x00, (byte)0x00,
     35 
     36         (byte)0xFF, (byte)0x00, (byte)0x00,
     37         (byte)0xFF, (byte)0xFF, (byte)0xFF,
     38         (byte)0xFF, (byte)0x00, (byte)0x00,
     39         (byte)0xFF, (byte)0xFF, (byte)0xFF,
     40     };
     41 
     42     public static Image getPlaceholderImage(){
     43         ByteBuffer tempData = BufferUtils.createByteBuffer(3 * 4 * 4);
     44         tempData.put(imageData).flip();
     45         return new Image(Format.RGB8, 4, 4, tempData);
     46     }
     47 
     48     public static Material getPlaceholderMaterial(AssetManager assetManager){
     49         Material mat = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
     50         mat.setColor("Color", ColorRGBA.Red);
     51         return mat;
     52     }
     53 
     54     public static Spatial getPlaceholderModel(AssetManager assetManager){
     55         // What should be the size? Nobody knows
     56         // the user's expected scale...
     57         Box box = new Box(1, 1, 1);
     58         Geometry geom = new Geometry("placeholder", box);
     59         geom.setMaterial(getPlaceholderMaterial(assetManager));
     60         return geom;
     61     }
     62 
     63     public static AudioData getPlaceholderAudio(){
     64         AudioBuffer audioBuf = new AudioBuffer();
     65         audioBuf.setupFormat(1, 8, 44100);
     66         ByteBuffer bb = BufferUtils.createByteBuffer(1);
     67         bb.put((byte)0).flip();
     68         audioBuf.updateData(bb);
     69         return audioBuf;
     70     }
     71 
     72 }
     73