groovyとJOGLで画像を放射状に配置する

groovyと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 static javax.media.opengl.GL.*;
import java.io.*;
import javax.media.opengl.*;
import com.sun.opengl.util.*;
import com.sun.opengl.util.texture.*;

// 出力画像サイズ
width = 300
height = 300

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"
]
textures = new Texture[fn.size]

GLDrawableFactory gldf = 
  GLDrawableFactory.getFactory()
GLCapabilities glc = new GLCapabilities()
glc.setDoubleBuffered(false)
GLPbuffer buf = gldf.createGLPbuffer(
  glc, null, width, height, null)
GL gl = buf.getGL()

buf.addGLEventListener(
[ init: {
    // 背景色
    gl.glClearColor(
      0x68/0xff as Float, 
      0x60/0xff as Float, 
      0x60/0xff as Float,
      1f)
    for(fi in 0..fn.size-1){
      textures[fi] = 
        TextureIO.newTexture(
        new File(fn[fi]), true)
      textures[fi].enable();
    }
  },

  display: {
    gl.glViewport(0, 0, width, height)

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

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

    gl.glEnable(GL_LIGHTING)
    gl.glEnable(GL_LIGHT0)
    gl.glEnable(GL_COLOR_MATERIAL)
    gl.glEnable(GL_AUTO_NORMAL);
    gl.glEnable(GL_NORMALIZE)
    gl.glEnable(GL_DEPTH_TEST)
//    gl.glEnable(GL_CULL_FACE)
    gl.glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, 
      GL_TRUE)

    gl.glEnable(GL_TEXTURE_2D)

    gl.glClear(GL_COLOR_BUFFER_BIT
      | GL_DEPTH_BUFFER_BIT )

    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)

    da = 360f / fn.size
    ps = 2f
    for(qi in 0..fn.size-1){
      // テクスチャが張られたポリゴンを描画
      textures[qi].bind();
      px = ps * (float)Math.cos(
        Math.PI * da * qi / 180) as float
      pz = ps * (float)Math.sin(
        Math.PI * da * qi / 180) as float
      nx = ps * (float)Math.cos(
        Math.PI * (da * qi+90) / 180) as float
      nz = ps * (float)Math.sin(
        Math.PI * (da * qi+90) / 180) as float

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

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

    gl.glPopMatrix()
  },

  reshape: {},
  displayChanged: {}
] as GLEventListener
)
GLContext context = 
  buf.createContext(null)
context.makeCurrent()
buf.display()
Screenshot.writeToFile(
  new File("sample1306a.png"), 
  width, height, true)
context.release()
context.destroy()

出力画像(sample1306a.png)


動作環境
JDK1.6 Update14, Groovy 1.6.3, JOGL 1.1.1a

関連情報
groovyとJOGLのまとめ