Hi Nico,
Is this what you looking for:
Image image - the image to scale up
int width = (int)image.getWidth();
int height = (int)image.getHeight();
int z = (int)getZoom(); // 2, 4, 8, 16 (I only tested for powers of
two)
IntBuffer src = IntBuffer.allocate(width * height);
WritablePixelFormat<IntBuffer> pf = PixelFormat.getIntArgbInstance();
image.getPixelReader().getPixels(0, 0, width, height, pf, src, width);
int newWidth = width * z;
int newHeight = height * z;
int[] dst = new int[newWidth * newHeight];
int index = 0;
for (int y = 0; y < height; y++) {
index = y * newWidth * z;
for (int x = 0; x < width; x++) {
int pixel = src.get();
for (int i = 0; i < z; i++) {
for (int j = 0; j < z; j++) {
dst[index + i + (newWidth * j)] = pixel;
}
}
index += z;
}
}
WritableImage bigImage = new WritableImage(newWidth, newHeight);
bigImage.getPixelWriter().setPixels(0, 0, newWidth, newHeight, pf,
dst, 0, newWidth);
preview.setImage(bigImage);
preview.setFitWidth(newWidth);
preview is ImageView where the scale up image is displayed.
Felipe
> On Aug 26, 2014, at 10:00 AM, Nico Krebs | www.mensch-und-maschine.de
> <nicokrebs....@googlemail.com> wrote:
>
> Hi there,
>
> i want to display multiple images (layers) inside a scene and want to be
> able to zoom without having "blurry" images as you can see in the images
> in the attachment (on the left you can see very big scaled pixels as i
> need it and on the right is the "blurry" JavaFX-Result on which i cannot
> identify single pixels.
>
> i used the zoom pane example from
> https://stackoverflow.com/questions/16680295/javafx-correct-scaling
>
> this is how i initialize my scene:
>
> ArrayList<ImageView> listOfImageViews = getImageViews();
> //imageviews are created from bufferedimages with:
> SwingFXUtils.toFXImage(image, null)
> final Group layerGroup = new Group(listOfImageViews);
> this.stackPane = new StackPane();
> stackPane.getChildren().add(layerGroup);
> scene = new Scene(stackPane);
> this.stackPane.getChildren().add(this.scrollPane);
>
> this.stackPane.getChildren().add(scrollPane.createZoomPane(listOfImageViews
> ));
> this.setScene(scene);
>
> and this is how zooming is done:
>
> ...//calculate scalefactor from scrolling
> ...
> layerGroup .setScaleX(layerGroup .getScaleX() * scaleFactor);
> layerGroup .setScaleY(layerGroup .getScaleY() * scaleFactor);
> ...
>
> when i zoom in so that i theoreticallly could see single pixels, all i
> see is a blurry area. (see examples)
> i know already that that`s JavaFX default behaviour and even if i set
> setSmooth(false), the antialiasing or precision errors or whatever is
> causing this, persists.
>
> is there perhaps another way? i am even willing to write my own
> implementation of Imageview if it would help.
>
> Can anybody please help me out?
>
> if you need more details, please ask :)
>
> thanks in advance and greetz,
> Nico
>
