Java ImageRaster类代码示例

import com.jme3.texture.image.ImageRaster; //导入依赖的package包/类
public static Texel fromImageRaster(ImageRaster ir, Vector2f from, Vector2f to) {
	Vector4f pixels[][]=new Vector4f[(int)(to.x-from.x)][(int)(to.y-from.y)];
	for(int y=(int)from.y;y<to.y;y++){
		for(int x=(int)from.x;x<to.x;x++){
			int xl=(int)(x-from.x);
			int yl=(int)(y-from.y);

			Vector4f c;
			if(x>=ir.getWidth()||y>=ir.getHeight()||x<0||y<0){
				LOGGER.warn("Invalid coordinates x{} y{} for image w{} h{}. Use padding color.",x,y,ir.getWidth(),ir.getHeight());
				c=PADDINGPX_COLOR;
			}else{
				c=ir.getPixel(x,y).toVector4f();
			}

			pixels[xl][yl]=c;
		}
	}
	Texel tx=new Texel(PixelFormat.FLOAT_NORMALIZED_RGBA,pixels);
	tx.AREA=new Vector2f[]{from,to

	};
	return tx;
}
 

import com.jme3.texture.image.ImageRaster; //导入依赖的package包/类
private void updateTexture(ImageRaster raster) {
	for (int i=1; i<points.size(); ++i) {
		Vector2f p1 = points.get(i-1);
		Vector2f p2 = points.get(i);
		int x1 = Math.max(0, (int) Math.floor(p1.x * RESOLUTION));
		int x2 = Math.min(RESOLUTION-1, (int) Math.ceil(p2.x * RESOLUTION));
		ColorRGBA c = new ColorRGBA();
		for (int x=x1; x<=x2; ++x) {
			float v = p1.y + (p2.y - p1.y) * ((x-x1)/(float)(x2-x1));
			c = raster.getPixel(x, 0, c);
			switch (textureChannel) {
				case 0: c.r = v; break;
				case 1: c.g = v; break;
				case 2: c.b = v; break;
				case 3: c.a = v; break;
			}
			raster.setPixel(x, 0, c);
		}
	}
}
 

import com.jme3.texture.image.ImageRaster; //导入依赖的package包/类
public void write(ImageRaster dst, Vector2f from, Vector2f to) {
	for(int y=(int)from.y;y<to.y;y++){
		for(int x=(int)from.x;x<to.x;x++){
			int xl=(int)(x-from.x);
			int yl=(int)(y-from.y);
			Vector4f c=get(PixelFormat.FLOAT_NORMALIZED_RGBA,xl,yl);
			ColorRGBA crgba=new ColorRGBA(c.x,c.y,c.z,c.w);
			if(x>=dst.getWidth()||y>=dst.getHeight()) continue;
			dst.setPixel(x,y,crgba);
		}
	}
}
 

import com.jme3.texture.image.ImageRaster; //导入依赖的package包/类
public static ColorRGBA getColor( Geometry geom, Vector3f pt, int index, Tweed tweed ) {
		
		MatParam param = geom.getMaterial().getParam( "DiffuseMap" );
		
		ImageRaster ir = ImageRaster.create( tweed.getAssetManager().loadTexture( ((Texture2D)param.getValue()).getName() ).getImage() );
    	
		Mesh mesh = geom.getMesh();
//		geom.getMaterial().getMaterialDef().
		
        VertexBuffer pb = mesh.getBuffer(Type.Position);
        VertexBuffer tb = mesh.getBuffer( Type.TexCoord );
        
        IndexBuffer  ib = mesh.getIndicesAsList();
        
        Vector2f uva = new Vector2f(), uvb = new Vector2f(), uvc = new Vector2f();
        Vector3f la  = new Vector3f(), lb  = new Vector3f(), lc  = new Vector3f();
        
        if (pb != null && pb.getFormat() == Format.Float && pb.getNumComponents() == 3) {
        	
            FloatBuffer fpb = (FloatBuffer) pb.getData();
            FloatBuffer ftb = (FloatBuffer) tb.getData();

            // aquire triangle's vertex indices
            int vertIndex = index * 3;
            
            int va = ib.get(vertIndex);
            int vb = ib.get(vertIndex+1);
            int vc = ib.get(vertIndex+2);
            
            BufferUtils.populateFromBuffer( la, fpb, va );
            BufferUtils.populateFromBuffer( lb, fpb, vb );
            BufferUtils.populateFromBuffer( lc, fpb, vc );
            
            BufferUtils.populateFromBuffer( uva, ftb, va );
            BufferUtils.populateFromBuffer( uvb, ftb, vb );
            BufferUtils.populateFromBuffer( uvc, ftb, vc );
            
//            PaintThing.debug.put(1, new Line ( la.x, la.z, lb.x, lb.z) );
//            PaintThing.debug.put(2, new Line ( lb.x, lb.z, lc.x, lc.z) );
//            PaintThing.debug.put(3, new Line ( lc.x, lc.z, la.x, la.z) );
            
            float[] bary = barycentric( pt, la, lb, lc );
            
            int x = (int)( ( uva.x * bary[0] + uvb.x * bary[1] + uvc.x * bary[2] ) * ir.getWidth ()) ,
            	y = (int)( ( uva.y * bary[0] + uvb.y * bary[1] + uvc.y * bary[2] ) * ir.getHeight()) ;
            
            ColorRGBA out = ir.getPixel( x, y );//ir.getHeight() - y -1 );

//            for (Pair<Vector3f, Vector2f> pair : new Pair[]{ new Pair( la, uva), new Pair (lb, uvb), new Pair (lc, uvc)}) {
//            	
//            	int xx = (int)(pair.second().x * ir.getWidth () ),
//            	    yy = (int)(pair.second().y * ir.getHeight() );
//            	
//            	System.out.println("xx "+xx+" yy "+ yy );
//            	
//            	ColorRGBA o = ir.getPixel( 
//            			xx,
//            			yy );
//            	
//            	PaintThing.debug.put(1, new ColPt( pair.first().x, pair.first().z, o.r, o.g, o.b ));
//            }
            
//            System.out.println("<< "+ ((Texture2D)param.getValue()).getName());
//			System.out.println( x + " " + y + " :: " + bary[ 0 ] + " " + bary[ 1 ] + " " + bary[ 2 ] + 
//					" --> " + out.r + "," + out.g + "," + out.b );
            
            return out;
            
        }else{
        	
            throw new UnsupportedOperationException("Position buffer not set or has incompatible format");
        }
    }
 

import com.jme3.texture.image.ImageRaster; //导入依赖的package包/类
public void setEmitterShape(Texture texture) {
	emitterShape = texture;
	ir = ImageRaster.create(emitterShape.getImage());
}
 

import com.jme3.texture.image.ImageRaster; //导入依赖的package包/类
protected ImageRaster getImageRaster() {
    return ImageRaster.create(colorImage);
}
 

import com.jme3.texture.image.ImageRaster; //导入依赖的package包/类
public boolean load(boolean flipX, boolean flipY) {

        int imageWidth = colorImage.getWidth();
        int imageHeight = colorImage.getHeight();

        if (imageWidth != imageHeight)
                throw new RuntimeException("imageWidth: " + imageWidth
                        + " != imageHeight: " + imageHeight);

        size = imageWidth;
        ImageRaster raster = getImageRaster();

        heightData = new float[(imageWidth * imageHeight)];

        ColorRGBA colorStore = new ColorRGBA();
        
        int index = 0;
        if (flipY) {
            for (int h = 0; h < imageHeight; ++h) {
                if (flipX) {
                    for (int w = imageWidth - 1; w >= 0; --w) {
                        //int baseIndex = (h * imageWidth)+ w;
                        //heightData[index++] = getHeightAtPostion(raster, baseIndex, colorStore)*heightScale;
                        heightData[index++] = calculateHeight(raster.getPixel(w, h, colorStore))*heightScale*backwardsCompScale;
                    }
                } else {
                    for (int w = 0; w < imageWidth; ++w) {
                        //int baseIndex = (h * imageWidth)+ w;
                        //heightData[index++] = getHeightAtPostion(raster, baseIndex, colorStore)*heightScale;
                        heightData[index++] = calculateHeight(raster.getPixel(w, h, colorStore))*heightScale*backwardsCompScale;
                    }
                }
            }
        } else {
            for (int h = imageHeight - 1; h >= 0; --h) {
                if (flipX) {
                    for (int w = imageWidth - 1; w >= 0; --w) {
                        //int baseIndex = (h * imageWidth)+ w;
                        //heightData[index++] = getHeightAtPostion(raster, baseIndex, colorStore)*heightScale;
                        heightData[index++] = calculateHeight(raster.getPixel(w, h, colorStore))*heightScale*backwardsCompScale;
                    }
                } else {
                    for (int w = 0; w < imageWidth; ++w) {
                        //int baseIndex = (h * imageWidth)+ w;
                        //heightData[index++] = getHeightAtPostion(raster, baseIndex, colorStore)*heightScale;
                        heightData[index++] = calculateHeight(raster.getPixel(w, h, colorStore))*heightScale*backwardsCompScale;
                    }
                }
            }
        }

        return true;
    }