Processing doesn't let me use the size of the image for the size of the window

cadavara

I got the following code from a tutorial. I checked it with the reference and it should work.

The error I get is: "The size of this sketch could not be determined from your code. Use only numbers (not variables) for the size() command. Read the size() reference for more details.".

void setup(){ PImage img = loadImage("image.jpg"); size(img.width*2, img.height, P2D); }

quark

The first line should be

void setup(){

Which version of Processing are you using?

cadavara

I'm using Processing 3

GoToLoop

https://GitHub.com/processing/processing-docs/issues/436

cadavara

But what is the solution then? Nevermind, I didn't scroll down

GoToLoop

You can still use surface.setSize(): https://forum.Processing.org/two/discussions/tagged?Tag=setsize()

cadavara

Why is surface.setSize() not in the Processing reference?

GoToLoop

B/c the devs consider them some internal hack which we're not clever enough to know about! =P~

cadavara

Wow thanks for the inside information. I fixed it with void settings() though

quark

Why is surface.setSize() not in the Processing reference?

The actual API Application Programming Interface) will invariably be ahead of the documentation. It takes a huge effort to keep reference documentation up to date.

GoToLoop

@quark, I doubt it that's the case for surface or getSurface().
And many others like getGraphics(), dataPath(), dataFile(), etc.
They don't even mention that class PSurface exists! :-@
Even the @Deprecated frame was never once mentioned either.
Those are very deliberate decisions to leave lotsa useful API outside normal users.
They're rather intended for 3rd-party lib devs instead. >-)