setRegion method

void setRegion({ required PImage image, int x = 0, int y = 0, })

Copies the given image into this PImage at the given (x,y).

Any pixels in image that exceeds the available space in this PImage are ignored.

The given (x,y) must sit within the bounds of this PImage.

Implementation

void setRegion({
  required PImage image,
  int x = 0,
  int y = 0,
}) {
  if (x < 0) {
    throw Exception("x must be >= 0: $x");
  }
  if (x >= width) {
    throw Exception("x must be < this image's width - width: $width, y: $y");
  }
  if (y < 0) {
    throw Exception("y must be >= 0: $y");
  }
  if (y >= height) {
    throw Exception("y must be < this image's height - height: $height, y: $y");
  }

  for (int destX = x; (destX - x) < image.width && destX < this.width; x += 1) {
    for (int destY = y; (destY - y) < image.height && destY < this.height; y += 1) {
      set(destX, destY, image.get(destX - x, destY - y));
    }
  }
}