geekwright / XoopsCore

  ## --------------------------------------------------------

  private function findUnusedGreen()

  # Purpose:  We find a green color suitable to use like green-screen effect.

  #     Therefore, the color must not exist in the image.

  {

    $green = 255;

    do {

      $greenChroma = array(0, $green, 0);

      $colorArray = $this->formatColor($greenChroma);

      $match = $this->testColorExists($colorArray);

      $green--;

    } while ($match == false && $green > 0);

    // *** If no match, just bite the bullet and use green value of 255

    if (!$match) {

      $greenChroma = array(0, $green, 0);

    }

    return $greenChroma;

  }

  ## --------------------------------------------------------

  ## --------------------------------------------------------

  private function findUnusedBlue()

  # Purpose:  We find a green color suitable to use like green-screen effect.

  #     Therefore, the color must not exist in the image.

  {

    $blue = 255;

    do {

      $blueChroma = array(0, 0, $blue);

      $colorArray = $this->formatColor($blueChroma);

      $match = $this->testColorExists($colorArray);

      $blue--;

    } while ($match == false && $blue > 0);

    // *** If no match, just bite the bullet and use blue value of 255

    if (!$match) {

      $blueChroma = array(0, 0, $blue);

    }

    return $blueChroma;

  }

  ## --------------------------------------------------------