Method setImpl

core/src/processing/core/PImage.java:767–782

Internal function to actually handle setting a block of pixels that has already been properly cropped from the image to a valid region.

(PImage sourceImage,
                         int sourceX, int sourceY,
                         int sourceWidth, int sourceHeight,
                         int targetX, int targetY)

   * has already been properly cropped from the image to a valid region.
   */
  protected void setImpl(PImage sourceImage,
                         int sourceX, int sourceY,
                         int sourceWidth, int sourceHeight,
                         int targetX, int targetY) {
    int sourceOffset = sourceY * sourceImage.pixelWidth + sourceX;
    int targetOffset = targetY * pixelWidth + targetX;

    for (int y = sourceY; y < sourceY + sourceHeight; y++) {
      System.arraycopy(sourceImage.pixels, sourceOffset, pixels, targetOffset, sourceWidth);
      sourceOffset += sourceImage.pixelWidth;
      targetOffset += pixelWidth;
    }

    //updatePixelsImpl(targetX, targetY, sourceWidth, sourceHeight);
    updatePixels(targetX, targetY, sourceWidth, sourceHeight);
  }