Terrain generation from an image

Troubleshooting graphics
1

Hallo everybody,



As explained in an earlier post I am creating a terrain based on real GPS data. One idea I had is that if I have an image of the terrain and that  JME generate the terrain (heightmap) based on the image.



Is this possible ?



Or can I only place an image as a texture onto a generated terrainpage ?



cheers,

Clemens

2

There is a class called ImageBasedHeightMap, try that one :slight_smile:

3

yeah normen is correct check Hello Terrain in jME 2 for a test class which uses the grayscale from an image to create terrain structures white is highest point black is lowest



private void complexTerrain() {
        // This grayscale image will be our terrain
        URL grayScale=HelloTerrain.class.getClassLoader().getResource("jmetest/data/texture/bubble.jpg");
 
        // These will be the textures of our terrain.
        URL waterImage=HelloTerrain.class.getClassLoader().getResource("jmetest/data/texture/water.png");
        URL dirtImage=HelloTerrain.class.getClassLoader().getResource("jmetest/data/texture/dirt.jpg");
        URL highest=HelloTerrain.class.getClassLoader().getResource("jmetest/data/texture/highest.jpg");
 
 
        //  Create an image height map based on the gray scale of our image.
        ImageBasedHeightMap ib=new ImageBasedHeightMap(
                new ImageIcon(grayScale).getImage()
        );
        // Create a terrain block from the image's grey scale
        TerrainBlock tb=new TerrainBlock("image icon",ib.getSize(),
                new Vector3f(.5f,.05f,.5f),ib.getHeightMap(),
                new Vector3f(0,0,0));
 
        //  Create an object to generate textured terrain from the image based height map.
        ProceduralTextureGenerator pg=new ProceduralTextureGenerator(ib);
        //  Look like water from height 0-60 with the strongest "water look" at 30
        pg.addTexture(new ImageIcon(waterImage),0,30,60);
        //  Look like dirt from height 40-120 with the strongest "dirt look" at 80
        pg.addTexture(new ImageIcon(dirtImage),40,80,120);
        //  Look like highest (pure white) from height 110-256 with the strongest "white look" at 130
        pg.addTexture(new ImageIcon(highest),110,130,256);
 
        //  Tell pg to create a texture from the ImageIcon's it has recieved.
        pg.createTexture(256);
        TextureState ts=display.getRenderer().createTextureState();
        // Load the texture and assign it.
        ts.setTexture(
                TextureManager.loadTexture(
                        pg.getImageIcon().getImage(),
                        Texture.MinificationFilter.Trilinear,
                        Texture.MagnificationFilter.Bilinear,
                        true
                )
        );
        tb.setRenderState(ts);
 
        // Give the terrain a bounding box
        tb.setModelBound(new BoundingBox());
        tb.updateModelBound();
 
        // Move the terrain in front of the camera
        tb.setLocalTranslation(new Vector3f(0,0,-50));
 
        // Attach the terrain to our rootNode.
        rootNode.attachChild(tb);
    }

4

Thank you allot I will try that out if it is working with a photo as well.



cheers,

Clemens