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package com.jme3.util;
import com.jme3.asset.AssetManager;
import com.jme3.asset.TextureKey;
import com.jme3.bounding.BoundingSphere;
import com.jme3.material.Material;
import com.jme3.math.Vector3f;
import com.jme3.renderer.queue.RenderQueue.Bucket;
import com.jme3.scene.Geometry;
import com.jme3.scene.Spatial;
import com.jme3.scene.shape.Sphere;
import com.jme3.texture.Image;
import com.jme3.texture.Image.Format;
import com.jme3.texture.Texture;
import com.jme3.texture.TextureCubeMap;
import java.nio.ByteBuffer;
import java.util.ArrayList;
/**
* <code>SkyFactory</code> is used to create jME {@link Spatial}s that can
* be attached to the scene to display a sky image in the background.
*
* @author Kirill Vainer
*/
public class SkyFactory {
/**
* Creates a sky using the given texture (cubemap or spheremap).
*
* @param assetManager The asset manager to use to load materials
* @param texture Texture to use for the sky
* @param normalScale The normal scale is multiplied by the 3D normal
* to get a texture coordinate. Use Vector3f.UNIT_XYZ to not apply
* and transformation to the normal.
* @param sphereMap The way the texture is used
* depends on this value:<br>
* <ul>
* <li>true: Its a Texture2D with the pixels arranged for
* <a href="http://en.wikipedia.org/wiki/Sphere_mapping">sphere mapping</a>.</li>
* <li>false: Its either a TextureCubeMap or Texture2D. If its a Texture2D
* then the image is taken from it and is inserted into a TextureCubeMap</li>
* </ul>
* @return A spatial representing the sky
*/
public static Spatial createSky(AssetManager assetManager, Texture texture, Vector3f normalScale, boolean sphereMap) {
return createSky(assetManager, texture, normalScale, sphereMap, 10);
}
/**
* Creates a sky using the given texture (cubemap or spheremap).
*
* @param assetManager The asset manager to use to load materials
* @param texture Texture to use for the sky
* @param normalScale The normal scale is multiplied by the 3D normal
* to get a texture coordinate. Use Vector3f.UNIT_XYZ to not apply
* and transformation to the normal.
* @param sphereMap The way the texture is used
* depends on this value:<br>
* <ul>
* <li>true: Its a Texture2D with the pixels arranged for
* <a href="http://en.wikipedia.org/wiki/Sphere_mapping">sphere mapping</a>.</li>
* <li>false: Its either a TextureCubeMap or Texture2D. If its a Texture2D
* then the image is taken from it and is inserted into a TextureCubeMap</li>
* </ul>
* @param sphereRadius If specified, this will be the sky sphere's radius.
* This should be the camera's near plane for optimal quality.
* @return A spatial representing the sky
*/
public static Spatial createSky(AssetManager assetManager, Texture texture, Vector3f normalScale, boolean sphereMap, int sphereRadius) {
if (texture == null) {
throw new IllegalArgumentException("texture cannot be null");
}
final Sphere sphereMesh = new Sphere(10, 10, sphereRadius, false, true);
Geometry sky = new Geometry("Sky", sphereMesh);
sky.setQueueBucket(Bucket.Sky);
sky.setCullHint(Spatial.CullHint.Never);
sky.setModelBound(new BoundingSphere(Float.POSITIVE_INFINITY, Vector3f.ZERO));
Material skyMat = new Material(assetManager, "Common/MatDefs/Misc/Sky.j3md");
skyMat.setVector3("NormalScale", normalScale);
if (sphereMap) {
skyMat.setBoolean("SphereMap", sphereMap);
} else if (!(texture instanceof TextureCubeMap)) {
// make sure its a cubemap
Image img = texture.getImage();
texture = new TextureCubeMap();
texture.setImage(img);
}
skyMat.setTexture("Texture", texture);
sky.setMaterial(skyMat);
return sky;
}
private static void checkImage(Image image) {
// if (image.getDepth() != 1)
// throw new IllegalArgumentException("3D/Array images not allowed");
if (image.getWidth() != image.getHeight()) {
throw new IllegalArgumentException("Image width and height must be the same");
}
if (image.getMultiSamples() != 1) {
throw new IllegalArgumentException("Multisample textures not allowed");
}
}
private static void checkImagesForCubeMap(Image... images) {
if (images.length == 1) {
return;
}
Format fmt = images[0].getFormat();
int width = images[0].getWidth();
int height = images[0].getHeight();
ByteBuffer data = images[0].getData(0);
int size = data != null ? data.capacity() : 0;
checkImage(images[0]);
for (int i = 1; i < images.length; i++) {
Image image = images[i];
checkImage(images[i]);
if (image.getFormat() != fmt) {
throw new IllegalArgumentException("Images must have same format");
}
if (image.getWidth() != width || image.getHeight() != height) {
throw new IllegalArgumentException("Images must have same resolution");
}
ByteBuffer data2 = image.getData(0);
if (data2 != null){
if (data2.capacity() != size) {
throw new IllegalArgumentException("Images must have same size");
}
}
}
}
public static Spatial createSky(AssetManager assetManager, Texture west, Texture east, Texture north, Texture south, Texture up, Texture down, Vector3f normalScale) {
return createSky(assetManager, west, east, north, south, up, down, normalScale, 10);
}
public static Spatial createSky(AssetManager assetManager, Texture west, Texture east, Texture north, Texture south, Texture up, Texture down, Vector3f normalScale, int sphereRadius) {
final Sphere sphereMesh = new Sphere(10, 10, sphereRadius, false, true);
Geometry sky = new Geometry("Sky", sphereMesh);
sky.setQueueBucket(Bucket.Sky);
sky.setCullHint(Spatial.CullHint.Never);
sky.setModelBound(new BoundingSphere(Float.POSITIVE_INFINITY, Vector3f.ZERO));
Image westImg = west.getImage();
Image eastImg = east.getImage();
Image northImg = north.getImage();
Image southImg = south.getImage();
Image upImg = up.getImage();
Image downImg = down.getImage();
checkImagesForCubeMap(westImg, eastImg, northImg, southImg, upImg, downImg);
Image cubeImage = new Image(westImg.getFormat(), westImg.getWidth(), westImg.getHeight(), null);
cubeImage.addData(westImg.getData(0));
cubeImage.addData(eastImg.getData(0));
cubeImage.addData(downImg.getData(0));
cubeImage.addData(upImg.getData(0));
cubeImage.addData(southImg.getData(0));
cubeImage.addData(northImg.getData(0));
if (westImg.getEfficentData() != null){
// also consilidate efficient data
ArrayList<Object> efficientData = new ArrayList<Object>(6);
efficientData.add(westImg.getEfficentData());
efficientData.add(eastImg.getEfficentData());
efficientData.add(downImg.getEfficentData());
efficientData.add(upImg.getEfficentData());
efficientData.add(southImg.getEfficentData());
efficientData.add(northImg.getEfficentData());
cubeImage.setEfficentData(efficientData);
}
TextureCubeMap cubeMap = new TextureCubeMap(cubeImage);
cubeMap.setAnisotropicFilter(0);
cubeMap.setMagFilter(Texture.MagFilter.Bilinear);
cubeMap.setMinFilter(Texture.MinFilter.NearestNoMipMaps);
cubeMap.setWrap(Texture.WrapMode.EdgeClamp);
Material skyMat = new Material(assetManager, "Common/MatDefs/Misc/Sky.j3md");
skyMat.setTexture("Texture", cubeMap);
skyMat.setVector3("NormalScale", normalScale);
sky.setMaterial(skyMat);
return sky;
}
public static Spatial createSky(AssetManager assetManager, Texture west, Texture east, Texture north, Texture south, Texture up, Texture down) {
return createSky(assetManager, west, east, north, south, up, down, Vector3f.UNIT_XYZ);
}
public static Spatial createSky(AssetManager assetManager, Texture texture, boolean sphereMap) {
return createSky(assetManager, texture, Vector3f.UNIT_XYZ, sphereMap);
}
public static Spatial createSky(AssetManager assetManager, String textureName, boolean sphereMap) {
TextureKey key = new TextureKey(textureName, true);
key.setGenerateMips(true);
key.setAsCube(!sphereMap);
Texture tex = assetManager.loadTexture(key);
return createSky(assetManager, tex, sphereMap);
}
}
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