Effective image cropping in JavaFX

Question

I\'m trying to write a Jigsaw puzzle using JavaFX partly because someone asked me and partly because I want to give JavaFX a go. However, I am having difficulty with the ac

Answer 1

Multiple ImageView objects can reference the same Image. The data for the image itself is stored in the Image. If you have 1000 ImageView objects each referencing the same Image then there is only 1 copy of the pixels in memory. Creating copies using WriteableImage would actually be more expensive than having multiple ImageView objects.

Answer 2

Using PixelReader and WritableImage should help.

the following cuts a new image from an old one at position (x,y) and size (width, height)

PixelReader reader = oldImage.getPixelReader();
WritableImage newImage = new WritableImage(reader, x, y, width, height);