JOGLで画像を放射状に配置する

JOGLで画像を放射状に配置するには、以下のコードを実行します。

import java.io.*;
import javax.media.opengl.*;
import com.sun.opengl.util.*;
import com.sun.opengl.util.texture.*;

public class JoglSample49
{
    // 出力画像サイズ
    private static int width = 300;
    private static int height = 300;
    // テクスチャ
    private static Texture textures[] = null;

    private static String fn[] = {
        "sample1182a.png",
        "sample1189a.png",
        "sample1191a.png",
        "sample1194a.png",
        "sample1195a.png",
        "sample1196a.png",
        "sample1197a.png",
        "sample1198a.png",
        "sample1199a.png",
        "sample1201a.png",
        "sample1202a.png",
        "sample1206a.png"
    };

    public static void main(String args[])
        throws IOException
    {
        GLDrawableFactory gldf = 
            GLDrawableFactory.getFactory();
        GLCapabilities glc = new GLCapabilities();
        glc.setDoubleBuffered(false);
        GLPbuffer buf = gldf.createGLPbuffer(
           glc, null, width, height, null);

        buf.addGLEventListener(
            new GLEventListener(){
            // 初期化
            public void init(GLAutoDrawable dr)
            {
                GL gl = dr.getGL();
                // 背景色
                gl.glClearColor(
                    (float)0x68/(float)0xff, 
                    (float)0x60/(float)0xff, 
                    (float)0x60/(float)0xff,
                    1f);

                try
                {
                    textures = new Texture[fn.length];
                    for(int fi=0;fi<fn.length;fi++){
                        textures[fi] = 
                            TextureIO.newTexture(
                            new File(fn[fi]), true);
                        textures[fi].enable();
                    }
                }
                catch(IOException ioex){
                    ioex.printStackTrace();
                }

            }

            public void display(GLAutoDrawable dr)
            {
                GL gl = dr.getGL();
                gl.glViewport(0, 0, width, height);

                // 透視投影
                gl.glMatrixMode(GL.GL_PROJECTION);
                gl.glLoadIdentity();
                float ratio = (float)height/(float)width;
                gl.glFrustum(-1.0f, 1.0f, -ratio, ratio,
                    5.0f, 40.0f);

                gl.glMatrixMode(GL.GL_MODELVIEW);
                gl.glLoadIdentity();
                gl.glTranslatef(0.0f, -0.5f, -12.0f);

                gl.glEnable(GL.GL_LIGHTING);
                gl.glEnable(GL.GL_LIGHT0);
                gl.glEnable(gl.GL_COLOR_MATERIAL);
                gl.glEnable(GL.GL_NORMALIZE);
                gl.glEnable(GL.GL_AUTO_NORMAL);
                gl.glEnable(GL.GL_DEPTH_TEST);
//                gl.glEnable(GL.GL_CULL_FACE);
                gl.glEnable(GL.GL_TEXTURE_2D);
                gl.glClear(GL.GL_COLOR_BUFFER_BIT
                    |GL.GL_DEPTH_BUFFER_BIT );
                gl.glLightModeli(GL.GL_LIGHT_MODEL_TWO_SIDE, 
                    GL.GL_TRUE);

                gl.glPushMatrix();
                // X軸回転
                gl.glRotatef(15.0f, 1.0f, 0.0f, 0.0f);
                // Y軸回転
                gl.glRotatef(20.0f, 0.0f, 1.0f, 0.0f);

                float da = 360f / fn.length;
                float ps = 2f;
                for(int qi=0;qi<fn.length;qi++){
                    // テクスチャが張られたポリゴンを描画
                    textures[qi].bind();
                    float px = ps * (float)Math.cos(
                        Math.PI * da * qi / 180);
                    float pz = ps * (float)Math.sin(
                        Math.PI * da * qi / 180);
                    float nx = ps * (float)Math.cos(
                        Math.PI * (da * qi+90) / 180);
                    float nz = ps * (float)Math.sin(
                        Math.PI * (da * qi+90) / 180);

                    gl.glBegin(GL.GL_QUADS);
                    gl.glNormal3f(nx, 0.0f, nz);

                    gl.glTexCoord2f(0.0f, 0.0f);
                    gl.glVertex3f(0f, ps/2f, 0f);
                    gl.glTexCoord2f(0.0f, 1.0f);
                    gl.glVertex3f(0f, -ps/2f, 0f);
                    gl.glTexCoord2f(1.0f, 1.0f);
                    gl.glVertex3f(px, -ps/2f,  pz);
                    gl.glTexCoord2f(1.0f, 0.0f);
                    gl.glVertex3f(px, ps/2f, pz);
                    gl.glEnd();
                }

                gl.glPopMatrix();
            }

            public void reshape(
                GLAutoDrawable dr,
                int x, int y,
                int width, int height){}

            public void displayChanged(
                GLAutoDrawable dr,
                boolean modeChanged,
                boolean deviceChanged){}
          }
        );

        GLContext context =  buf.createContext(null);
        context.makeCurrent();
        buf.display();
        Screenshot.writeToFile(
            new File("sample1207a.png"), width, height, true);
        context.release();
        context.destroy();
    }
}

出力画像(sample1207a.png)