Creating a Javafx image from a int array

Question

I am desperately trying to create an Image from a pixel-array with integer values. Regardless of using the WritableImage or the Canvas, it is always said that the PixelFormat is BYTE_RGB or BYTE_BGRA_PRE, so that I am forced to use a byte-array.

Is there any way to change the PixelFormat to <IntBuffer> or did I overlook another component that is capable of having a PixelFormat<IntBuffer>?

James_D · Accepted Answer · 2016-01-26 14:13:35Z

6

You haven't described the structure of the pixel data in your int[], but you can do something along the lines of

int[] pixels = ... ;
WritableImage img = new WritableImage(width, height);
PixelWriter pw = img.getPixelWriter();
pw.setPixels(0, 0, width, height, PixelFormat.getIntArgbInstance(), pixels, 0, width);

answered Jan 26, 2016 at 14:13

James_D

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3 Comments

Adam Over a year ago

Thank you very much four answer! Using PixelWriters setPixels()-method seem not work for me properly. The image doesn't appear! My ImageView only loads it when changing to byte[] pixelarray and byte-PixelFormat it shows up.Also System.out.println(img.getPixelWriter().getPixelFormat().getType()); spids out „BYTE_BGRA_PRE“

James_D Over a year ago

What is actually in your array of ints?

James_D Over a year ago

Well... what are you actually expecting to see then? If all the pixels have zero alpha, they are all transparent.

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