setPositions(VertexBuffer v,float s,float[]b)

v'=v*s+b

setNormals(vertexBuffer norm)

setTexCoords(int, VertexArray, float, float[])

setPositions(VertexBuffer v,float s,float[]b)

short x = 20;
            short y = 20;
            short z = 20;
            short fx = (short) -x;
            short fy = (short) -y;
            short fz = (short) -z;
            //定点坐标
            short[] vert = {x,y,z, fx,y,z, x,fy,z, fx,fy,z, //D
            fx,y,fz, x,y,fz, fx,fy,fz, x,fy,fz, //C
            fx,y,z, fx,y,fz, fx,fy,z, fx,fy,fz, //B
            x,y,fz, x,y,z, x,fy,fz, x,fy,z, //F
            x,y,fz, fx,y,fz, x,y,z, fx,y,z, //A
            x,fy,z, fx,fy,z, x,fy,fz, fx,fy,fz}; //E
            try{vertArray=new VertexArray(vert.length/3,3,2);
            vertArray.set(0,vert.length/3,vert);
            }catch(Exception e){System.out.println("vert");}
            //发线
            byte[] norm = { 0,0,127, 0,0,127, 0,0,127, 0,0,127,
            0,0,-127, 0,0,-127, 0,0,-127, 0,0,-127,
            -127,0,0, -127,0,0, -127,0,0, -127,0,0,
            127,0,0, 127,0,0, 127,0,0, 127,0,0,
            0,127,0, 0,127,0, 0,127,0, 0,127,0,
            0,-127,0, 0,-127,0, 0,-127,0, 0,-127,0};
            try{normArray=new VertexArray(norm.length/3,3,1);
            normArray.set(0,norm.length/3,norm);
            }catch(Exception e){System.out.println("norm");e.printStackTrace();}
            //给出顶点们对应图片上的点（vert和tex数组是一一对应的）
            short[] tex = { 1, 0, 0, 0, 1, 1, 0, 1,
            1, 0, 0, 0, 1, 1, 0, 1,
            1, 0, 0, 0, 1, 1, 0, 1,
            1, 0, 0, 0, 1, 1, 0, 1,
            1, 0, 0, 0, 1, 1, 0, 1,
            1, 0, 0, 0, 1, 1, 0, 1 };
            try{
            texArray=new VertexArray(tex.length/2,2,2);
            texArray.set(0,tex.length/2,tex);
            }catch(Exception e){System.out.println("tex");}
            //建立正方体
            vb=new VertexBuffer();
            vb.setPositions(vertArray,1.0f,null);
            vb.setNormals(normArray);
            vb.setTexCoords(0,texArray,1.0f,null);

appearnce=new Appearance();
            //创建帖图
            Texture2D texture=new Texture2D(image2d);
            texture.setBlendColor(Texture2D.FUNC_DECAL);
            texture.setWrapping(Texture2D.WRAP_REPEAT,Texture2D.WRAP_REPEAT);
            texture.setFiltering(Texture2D.FILTER_NEAREST,Texture2D.FILTER_NEAREST);
            material=new Material();
            material.setColor(Material.DIFFUSE, 0xFFFFFFFF);
            material.setColor(Material.SPECULAR, 0xFFFFFFFF);
            material.setShininess(100.0f);
            appearnce.setTexture(0,texture);
            appearnce.setMaterial(material);
            mesh=new Mesh(vb,tsa,appearnce);
            mesh.setAppearance(0,appearnce);

//设置poly模式设置
            PolygonMode polygonMode=new PolygonMode();
            polygonMode.setShading(PolygonMode.SHADE_SMOOTH);
            polygonMode.setCulling(PolygonMode.CULL_NONE);
            //生成外貌
            appearnce=new Appearance();
            appearnce.setPolygonMode(polygonMode);

world=new World();
            //world.addChild(camera);
            world.addChild(mesh);
            //world.setActiveCamera(camera);
            //world.addChild(light);

Object3D[] roots = Loader.load(“http://www.example.com/m3g/samples/simple.m3g”);
            myWorld = (World)roots[0];

　g.setClip(0,0,getWidth(),getHeight());
            g.drawString("3D demo",2,100,Graphics.LEFT|Graphics.TOP);
            g3d.bindTarget(g,true,Graphics3D.DITHER|Graphics3D.TRUE_COLOR);
            g3d.setViewport(0,0,getWidth(),getHeight());
            g3d.resetLights();
            g3d.clear(background);
            g3d.addLight(light,transform_light);
            transForm.postRotate(angle,1,1,1);
            //transForm.postTranslate(0,0,0);
            transform_camera.postTranslate(0,0,0.02f);
            g3d.setCamera(camera,transform_camera);
            g3d.render(world,transForm);
            //g3d.render(vb,tsa,appearnce,transForm);
            g3d.releaseTarget();