1 files changed, 147 insertions, 0 deletions
diff --git a/engine/src/test/jme3test/terrain/TerrainFractalGridTest.java b/engine/src/test/jme3test/terrain/TerrainFractalGridTest.java
new file mode 100644
index 0000000..499a8d6
--- /dev/null
+++ b/engine/src/test/jme3test/terrain/TerrainFractalGridTest.java
@@ -0,0 +1,147 @@
+package jme3test.terrain;
+
+import com.jme3.app.SimpleApplication;
+import com.jme3.app.state.ScreenshotAppState;
+import com.jme3.bullet.control.CharacterControl;
+import com.jme3.material.Material;
+import com.jme3.math.ColorRGBA;
+import com.jme3.math.Vector3f;
+import com.jme3.terrain.geomipmap.TerrainGrid;
+import com.jme3.terrain.geomipmap.TerrainLodControl;
+import com.jme3.terrain.geomipmap.grid.FractalTileLoader;
+import com.jme3.terrain.geomipmap.lodcalc.DistanceLodCalculator;
+import com.jme3.terrain.noise.ShaderUtils;
+import com.jme3.terrain.noise.basis.FilteredBasis;
+import com.jme3.terrain.noise.filter.IterativeFilter;
+import com.jme3.terrain.noise.filter.OptimizedErode;
+import com.jme3.terrain.noise.filter.PerturbFilter;
+import com.jme3.terrain.noise.filter.SmoothFilter;
+import com.jme3.terrain.noise.fractal.FractalSum;
+import com.jme3.terrain.noise.modulator.NoiseModulator;
+import com.jme3.texture.Texture;
+import com.jme3.texture.Texture.WrapMode;
+
+public class TerrainFractalGridTest extends SimpleApplication {
+
+    private Material mat_terrain;
+    private TerrainGrid terrain;
+    private float grassScale = 64;
+    private float dirtScale = 16;
+    private float rockScale = 128;
+
+    public static void main(final String[] args) {
+        TerrainFractalGridTest app = new TerrainFractalGridTest();
+        app.start();
+    }
+    private CharacterControl player3;
+    private FractalSum base;
+    private PerturbFilter perturb;
+    private OptimizedErode therm;
+    private SmoothFilter smooth;
+    private IterativeFilter iterate;
+
+    @Override
+    public void simpleInitApp() {
+        this.flyCam.setMoveSpeed(100f);
+        ScreenshotAppState state = new ScreenshotAppState();
+        this.stateManager.attach(state);
+
+        // TERRAIN TEXTURE material
+        this.mat_terrain = new Material(this.assetManager, "Common/MatDefs/Terrain/HeightBasedTerrain.j3md");
+
+        // Parameters to material:
+        // regionXColorMap: X = 1..4 the texture that should be appliad to state X
+        // regionX: a Vector3f containing the following information:
+        //      regionX.x: the start height of the region
+        //      regionX.y: the end height of the region
+        //      regionX.z: the texture scale for the region
+        //  it might not be the most elegant way for storing these 3 values, but it packs the data nicely :)
+        // slopeColorMap: the texture to be used for cliffs, and steep mountain sites
+        // slopeTileFactor: the texture scale for slopes
+        // terrainSize: the total size of the terrain (used for scaling the texture)
+        // GRASS texture
+        Texture grass = this.assetManager.loadTexture("Textures/Terrain/splat/grass.jpg");
+        grass.setWrap(WrapMode.Repeat);
+        this.mat_terrain.setTexture("region1ColorMap", grass);
+        this.mat_terrain.setVector3("region1", new Vector3f(15, 200, this.grassScale));
+
+        // DIRT texture
+        Texture dirt = this.assetManager.loadTexture("Textures/Terrain/splat/dirt.jpg");
+        dirt.setWrap(WrapMode.Repeat);
+        this.mat_terrain.setTexture("region2ColorMap", dirt);
+        this.mat_terrain.setVector3("region2", new Vector3f(0, 20, this.dirtScale));
+
+        // ROCK texture
+        Texture rock = this.assetManager.loadTexture("Textures/Terrain/Rock2/rock.jpg");
+        rock.setWrap(WrapMode.Repeat);
+        this.mat_terrain.setTexture("region3ColorMap", rock);
+        this.mat_terrain.setVector3("region3", new Vector3f(198, 260, this.rockScale));
+
+        this.mat_terrain.setTexture("region4ColorMap", rock);
+        this.mat_terrain.setVector3("region4", new Vector3f(198, 260, this.rockScale));
+
+        this.mat_terrain.setTexture("slopeColorMap", rock);
+        this.mat_terrain.setFloat("slopeTileFactor", 32);
+
+        this.mat_terrain.setFloat("terrainSize", 513);
+
+        this.base = new FractalSum();
+        this.base.setRoughness(0.7f);
+        this.base.setFrequency(1.0f);
+        this.base.setAmplitude(1.0f);
+        this.base.setLacunarity(2.12f);
+        this.base.setOctaves(8);
+        this.base.setScale(0.02125f);
+        this.base.addModulator(new NoiseModulator() {
+
+            @Override
+            public float value(float... in) {
+                return ShaderUtils.clamp(in[0] * 0.5f + 0.5f, 0, 1);
+            }
+        });
+
+        FilteredBasis ground = new FilteredBasis(this.base);
+
+        this.perturb = new PerturbFilter();
+        this.perturb.setMagnitude(0.119f);
+
+        this.therm = new OptimizedErode();
+        this.therm.setRadius(5);
+        this.therm.setTalus(0.011f);
+
+        this.smooth = new SmoothFilter();
+        this.smooth.setRadius(1);
+        this.smooth.setEffect(0.7f);
+
+        this.iterate = new IterativeFilter();
+        this.iterate.addPreFilter(this.perturb);
+        this.iterate.addPostFilter(this.smooth);
+        this.iterate.setFilter(this.therm);
+        this.iterate.setIterations(1);
+
+        ground.addPreFilter(this.iterate);
+
+        this.terrain = new TerrainGrid("terrain", 33, 129, new FractalTileLoader(ground, 256f));
+
+        this.terrain.setMaterial(this.mat_terrain);
+        this.terrain.setLocalTranslation(0, 0, 0);
+        this.terrain.setLocalScale(2f, 1f, 2f);
+        this.rootNode.attachChild(this.terrain);
+
+        TerrainLodControl control = new TerrainLodControl(this.terrain, this.getCamera());
+        control.setLodCalculator(new DistanceLodCalculator(33, 2.7f)); // patch size, and a multiplier
+        this.terrain.addControl(control);
+
+
+
+        this.getCamera().setLocation(new Vector3f(0, 300, 0));
+
+        this.viewPort.setBackgroundColor(new ColorRGBA(0.7f, 0.8f, 1f, 1f));
+
+        
+    }
+
+    @Override
+    public void simpleUpdate(final float tpf) {
+    }
+}