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* Copyright (c) 2009-2012 jMonkeyEngine
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* * Redistributions in binary form must reproduce the above copyright
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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package jme3test.terrain;
import com.jme3.app.SimpleApplication;
import com.jme3.collision.CollisionResult;
import com.jme3.collision.CollisionResults;
import com.jme3.font.BitmapText;
import com.jme3.input.KeyInput;
import com.jme3.input.MouseInput;
import com.jme3.input.controls.ActionListener;
import com.jme3.input.controls.KeyTrigger;
import com.jme3.input.controls.MouseButtonTrigger;
import com.jme3.light.AmbientLight;
import com.jme3.light.DirectionalLight;
import com.jme3.material.Material;
import com.jme3.material.RenderState.BlendMode;
import com.jme3.math.ColorRGBA;
import com.jme3.math.Ray;
import com.jme3.math.Vector2f;
import com.jme3.math.Vector3f;
import com.jme3.scene.Geometry;
import com.jme3.scene.debug.Arrow;
import com.jme3.scene.shape.Sphere;
import com.jme3.terrain.geomipmap.TerrainGrid;
import com.jme3.terrain.geomipmap.TerrainLodControl;
import com.jme3.terrain.geomipmap.TerrainQuad;
import com.jme3.terrain.geomipmap.grid.FractalTileLoader;
import com.jme3.terrain.geomipmap.lodcalc.DistanceLodCalculator;
import com.jme3.terrain.heightmap.AbstractHeightMap;
import com.jme3.terrain.heightmap.ImageBasedHeightMap;
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;
import java.util.ArrayList;
import java.util.List;
/**
*
* @author Brent Owens
*/
public class TerrainTestModifyHeight extends SimpleApplication {
private TerrainQuad terrain;
Material matTerrain;
Material matWire;
boolean wireframe = true;
boolean triPlanar = false;
boolean wardiso = false;
boolean minnaert = false;
protected BitmapText hintText;
private float grassScale = 64;
private float dirtScale = 16;
private float rockScale = 128;
private boolean raiseTerrain = false;
private boolean lowerTerrain = false;
private Geometry marker;
private Geometry markerNormal;
public static void main(String[] args) {
TerrainTestModifyHeight app = new TerrainTestModifyHeight();
app.start();
}
@Override
public void simpleUpdate(float tpf){
Vector3f intersection = getWorldIntersection();
updateHintText(intersection);
if (raiseTerrain){
if (intersection != null) {
adjustHeight(intersection, 64, tpf * 60);
}
}else if (lowerTerrain){
if (intersection != null) {
adjustHeight(intersection, 64, -tpf * 60);
}
}
if (terrain != null && intersection != null) {
float h = terrain.getHeight(new Vector2f(intersection.x, intersection.z));
Vector3f tl = terrain.getWorldTranslation();
marker.setLocalTranslation(tl.add(new Vector3f(intersection.x, h, intersection.z)) );
markerNormal.setLocalTranslation(tl.add(new Vector3f(intersection.x, h, intersection.z)) );
Vector3f normal = terrain.getNormal(new Vector2f(intersection.x, intersection.z));
((Arrow)markerNormal.getMesh()).setArrowExtent(normal);
}
}
@Override
public void simpleInitApp() {
loadHintText();
initCrossHairs();
setupKeys();
createMarker();
// WIREFRAME material
matWire = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
matWire.getAdditionalRenderState().setWireframe(true);
matWire.setColor("Color", ColorRGBA.Green);
createTerrain();
//createTerrainGrid();
DirectionalLight light = new DirectionalLight();
light.setDirection((new Vector3f(-0.5f, -1f, -0.5f)).normalize());
rootNode.addLight(light);
AmbientLight ambLight = new AmbientLight();
ambLight.setColor(new ColorRGBA(1f, 1f, 0.8f, 0.2f));
rootNode.addLight(ambLight);
cam.setLocation(new Vector3f(0, 256, 0));
cam.lookAtDirection(new Vector3f(0, -1f, 0).normalizeLocal(), Vector3f.UNIT_X);
}
public void loadHintText() {
hintText = new BitmapText(guiFont, false);
hintText.setLocalTranslation(0, getCamera().getHeight(), 0);
hintText.setText("Hit 1 to raise terrain, hit 2 to lower terrain");
guiNode.attachChild(hintText);
}
public void updateHintText(Vector3f target) {
int x = (int) getCamera().getLocation().x;
int y = (int) getCamera().getLocation().y;
int z = (int) getCamera().getLocation().z;
String targetText = "";
if (target!= null)
targetText = " intersect: "+target.toString();
hintText.setText("Press left mouse button to raise terrain, press right mouse button to lower terrain. " + x + "," + y + "," + z+targetText);
}
protected void initCrossHairs() {
BitmapText ch = new BitmapText(guiFont, false);
ch.setSize(guiFont.getCharSet().getRenderedSize() * 2);
ch.setText("+"); // crosshairs
ch.setLocalTranslation( // center
settings.getWidth() / 2 - guiFont.getCharSet().getRenderedSize() / 3 * 2,
settings.getHeight() / 2 + ch.getLineHeight() / 2, 0);
guiNode.attachChild(ch);
}
private void setupKeys() {
flyCam.setMoveSpeed(100);
inputManager.addMapping("wireframe", new KeyTrigger(KeyInput.KEY_T));
inputManager.addListener(actionListener, "wireframe");
inputManager.addMapping("Raise", new MouseButtonTrigger(MouseInput.BUTTON_LEFT));
inputManager.addListener(actionListener, "Raise");
inputManager.addMapping("Lower", new MouseButtonTrigger(MouseInput.BUTTON_RIGHT));
inputManager.addListener(actionListener, "Lower");
}
private ActionListener actionListener = new ActionListener() {
public void onAction(String name, boolean pressed, float tpf) {
if (name.equals("wireframe") && !pressed) {
wireframe = !wireframe;
if (!wireframe) {
terrain.setMaterial(matWire);
} else {
terrain.setMaterial(matTerrain);
}
} else if (name.equals("Raise")) {
raiseTerrain = pressed;
} else if (name.equals("Lower")) {
lowerTerrain = pressed;
}
}
};
private void adjustHeight(Vector3f loc, float radius, float height) {
// offset it by radius because in the loop we iterate through 2 radii
int radiusStepsX = (int) (radius / terrain.getLocalScale().x);
int radiusStepsZ = (int) (radius / terrain.getLocalScale().z);
float xStepAmount = terrain.getLocalScale().x;
float zStepAmount = terrain.getLocalScale().z;
long start = System.currentTimeMillis();
List<Vector2f> locs = new ArrayList<Vector2f>();
List<Float> heights = new ArrayList<Float>();
for (int z = -radiusStepsZ; z < radiusStepsZ; z++) {
for (int x = -radiusStepsX; x < radiusStepsX; x++) {
float locX = loc.x + (x * xStepAmount);
float locZ = loc.z + (z * zStepAmount);
if (isInRadius(locX - loc.x, locZ - loc.z, radius)) {
// see if it is in the radius of the tool
float h = calculateHeight(radius, height, locX - loc.x, locZ - loc.z);
locs.add(new Vector2f(locX, locZ));
heights.add(h);
}
}
}
terrain.adjustHeight(locs, heights);
//System.out.println("Modified "+locs.size()+" points, took: " + (System.currentTimeMillis() - start)+" ms");
terrain.updateModelBound();
}
private boolean isInRadius(float x, float y, float radius) {
Vector2f point = new Vector2f(x, y);
// return true if the distance is less than equal to the radius
return point.length() <= radius;
}
private float calculateHeight(float radius, float heightFactor, float x, float z) {
// find percentage for each 'unit' in radius
Vector2f point = new Vector2f(x, z);
float val = point.length() / radius;
val = 1 - val;
if (val <= 0) {
val = 0;
}
return heightFactor * val;
}
private Vector3f getWorldIntersection() {
Vector3f origin = cam.getWorldCoordinates(new Vector2f(settings.getWidth() / 2, settings.getHeight() / 2), 0.0f);
Vector3f direction = cam.getWorldCoordinates(new Vector2f(settings.getWidth() / 2, settings.getHeight() / 2), 0.3f);
direction.subtractLocal(origin).normalizeLocal();
Ray ray = new Ray(origin, direction);
CollisionResults results = new CollisionResults();
int numCollisions = terrain.collideWith(ray, results);
if (numCollisions > 0) {
CollisionResult hit = results.getClosestCollision();
return hit.getContactPoint();
}
return null;
}
private void createTerrain() {
// First, we load up our textures and the heightmap texture for the terrain
// TERRAIN TEXTURE material
matTerrain = new Material(assetManager, "Common/MatDefs/Terrain/TerrainLighting.j3md");
matTerrain.setBoolean("useTriPlanarMapping", false);
matTerrain.setBoolean("WardIso", true);
matTerrain.setFloat("Shininess", 0);
// ALPHA map (for splat textures)
matTerrain.setTexture("AlphaMap", assetManager.loadTexture("Textures/Terrain/splat/alphamap.png"));
// GRASS texture
Texture grass = assetManager.loadTexture("Textures/Terrain/splat/grass.jpg");
grass.setWrap(WrapMode.Repeat);
matTerrain.setTexture("DiffuseMap", grass);
matTerrain.setFloat("DiffuseMap_0_scale", grassScale);
// DIRT texture
Texture dirt = assetManager.loadTexture("Textures/Terrain/splat/dirt.jpg");
dirt.setWrap(WrapMode.Repeat);
matTerrain.setTexture("DiffuseMap_1", dirt);
matTerrain.setFloat("DiffuseMap_1_scale", dirtScale);
// ROCK texture
Texture rock = assetManager.loadTexture("Textures/Terrain/splat/road.jpg");
rock.setWrap(WrapMode.Repeat);
matTerrain.setTexture("DiffuseMap_2", rock);
matTerrain.setFloat("DiffuseMap_2_scale", rockScale);
// HEIGHTMAP image (for the terrain heightmap)
Texture heightMapImage = assetManager.loadTexture("Textures/Terrain/splat/mountains512.png");
AbstractHeightMap heightmap = null;
try {
heightmap = new ImageBasedHeightMap(heightMapImage.getImage(), 0.5f);
heightmap.load();
heightmap.smooth(0.9f, 1);
} catch (Exception e) {
e.printStackTrace();
}
// CREATE THE TERRAIN
terrain = new TerrainQuad("terrain", 65, 513, heightmap.getHeightMap());
TerrainLodControl control = new TerrainLodControl(terrain, getCamera());
control.setLodCalculator( new DistanceLodCalculator(65, 2.7f) ); // patch size, and a multiplier
terrain.addControl(control);
terrain.setMaterial(matTerrain);
terrain.setLocalTranslation(0, -100, 0);
terrain.setLocalScale(2.5f, 0.5f, 2.5f);
rootNode.attachChild(terrain);
}
private void createTerrainGrid() {
// TERRAIN TEXTURE material
matTerrain = 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 = assetManager.loadTexture("Textures/Terrain/splat/grass.jpg");
grass.setWrap(WrapMode.Repeat);
matTerrain.setTexture("region1ColorMap", grass);
matTerrain.setVector3("region1", new Vector3f(88, 200, this.grassScale));
// DIRT texture
Texture dirt = assetManager.loadTexture("Textures/Terrain/splat/dirt.jpg");
dirt.setWrap(WrapMode.Repeat);
matTerrain.setTexture("region2ColorMap", dirt);
matTerrain.setVector3("region2", new Vector3f(0, 90, this.dirtScale));
// ROCK texture
Texture rock = assetManager.loadTexture("Textures/Terrain/Rock2/rock.jpg");
rock.setWrap(WrapMode.Repeat);
matTerrain.setTexture("region3ColorMap", rock);
matTerrain.setVector3("region3", new Vector3f(198, 260, this.rockScale));
matTerrain.setTexture("region4ColorMap", rock);
matTerrain.setVector3("region4", new Vector3f(198, 260, this.rockScale));
matTerrain.setTexture("slopeColorMap", rock);
matTerrain.setFloat("slopeTileFactor", 32);
matTerrain.setFloat("terrainSize", 513);
FractalSum base = new FractalSum();
base.setRoughness(0.7f);
base.setFrequency(1.0f);
base.setAmplitude(1.0f);
base.setLacunarity(2.12f);
base.setOctaves(8);
base.setScale(0.02125f);
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(base);
PerturbFilter perturb = new PerturbFilter();
perturb.setMagnitude(0.119f);
OptimizedErode therm = new OptimizedErode();
therm.setRadius(5);
therm.setTalus(0.011f);
SmoothFilter smooth = new SmoothFilter();
smooth.setRadius(1);
smooth.setEffect(0.7f);
IterativeFilter iterate = new IterativeFilter();
iterate.addPreFilter(perturb);
iterate.addPostFilter(smooth);
iterate.setFilter(therm);
iterate.setIterations(1);
ground.addPreFilter(iterate);
this.terrain = new TerrainGrid("terrain", 65, 257, new FractalTileLoader(ground, 256f));
terrain.setMaterial(matTerrain);
terrain.setLocalTranslation(0, 0, 0);
terrain.setLocalScale(2f, 1f, 2f);
rootNode.attachChild(this.terrain);
TerrainLodControl control = new TerrainLodControl(this.terrain, getCamera());
this.terrain.addControl(control);
}
private void createMarker() {
// collision marker
Sphere sphere = new Sphere(8, 8, 0.5f);
marker = new Geometry("Marker");
marker.setMesh(sphere);
Material mat = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
mat.setColor("Color", new ColorRGBA(251f/255f, 130f/255f, 0f, 0.6f));
mat.getAdditionalRenderState().setBlendMode(BlendMode.Alpha);
marker.setMaterial(mat);
rootNode.attachChild(marker);
// surface normal marker
Arrow arrow = new Arrow(new Vector3f(0,1,0));
markerNormal = new Geometry("MarkerNormal");
markerNormal.setMesh(arrow);
markerNormal.setMaterial(mat);
rootNode.attachChild(markerNormal);
}
}