Jim

More experiments with image recursion. This one plots the central flower and the then uses the window as a background texture for the four quadrants - with reflections. The texture is drawn slightly faded which increases each time the background feeds back into itself.

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//
// Jim v1.0.
//
import processing.opengl.*;

//
// Dimensions of screen.
//
int kWidth = 640 ; //480 ;
int kHeight = 480 ; // 320 ;

//
// Dimensions of texture.
// For fast PCs reduce or remove the denominator.
//
int kTextureWidth = kWidth / 2 ;
int kTextureHeight = kHeight / 2 ;

//
// Used to store the current frame buffer as a texture.
//
PImage history ;

void setup()
{
  size( kWidth, kHeight, JAVA2D ) ;

  colorMode( RGB, 1.0 ) ;
  smooth() ;

  history = createImage( kTextureWidth, kTextureHeight, RGB ) ;
}

void draw()
{
  float t = millis() * 0.0001 ;

  pushMatrix() ;

  //
  // Draw the texture to the 4 quadrants with
  // reflections in horizontal and vertical reflection transforms.
  //
  image( history, 0, 0, kWidth /2, kHeight / 2 ) ;

  scale( -1.0, 1.0 ) ;
  image( history, - kWidth, 0, kWidth /2, kHeight / 2 ) ;

  scale( - 1.0, -1.0 ) ;
  image( history, 0, - kHeight, kWidth /2, kHeight / 2 ) ;

  scale( -1.0, 1.0 ) ;
  image( history, - kWidth, - kHeight, kWidth /2, kHeight / 2 ) ;

  popMatrix() ;

  //
  // Fade the background a bit.
  //
  fill( 1, 1, 1, 0.25 ) ;
  rect( 0, 0, kWidth, kHeight ) ;

  //
  // Draw a flower like object.
  //
  translate( kWidth/2, kHeight/2 ) ;

  fill( noise(t,0), noise(t,1), noise(t,2) ) ;
  ellipse( 0, 0, 100, 100 ) ;

  rotate( t * 3.0 ) ;

  for ( int j = 3 ; j >=0 ; j -- )
  {
    fill( noise(t*0.3,0,j), noise(t*0.3,1,j), noise(t*0.3,2,j) ) ;
    int petals = ( j + 1 ) * 8 ;

    for ( int i = 0 ; i < petals ; ++ i )
    {
      pushMatrix() ;

      rotate( 2.0 * PI * i / petals ) ;
      ellipse( 30.0 * j, 0, 30.0*j, 10 * j ) ;
      popMatrix() ;
    }
  }

  //
  // Use the current frame as the texture for the
  // mirror in the next frame.
  //
  history.copy( get(), 0, 0, width, height, 0, 0, kTextureWidth, kTextureHeight ) ;
}