Processing 1.0 - Processing Discourse - Save SVG as PNG without Background

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Index › Programming Questions & Help › Other Libraries › Save SVG as PNG without Background

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Save SVG as PNG without Background (Read 1606 times)

fejngold YaBB Newbies Offline Posts: 14	Save SVG as PNG without Background Dec 21^st, 2009, 5:20am Hej everybody, I'm wondering about whether its possible to draw a loaded SVG with Geomerative and save the generated screen as a *.png file without background? Does anybody has an idea? Thanks, fejngold

Cedric YaBB Moderator Offline Posts: 1838	Re: Save SVG as PNG without Background Reply #1 - Dec 21^st, 2009, 5:35am you can take a look at this threat http://processing.org/discourse/yabb2/?num=1231879947
	twitter.com/CedricKiefer

fejngold

Re: Save SVG as PNG without Background
Reply #2 - Dec 21^st, 2009, 6:40am

Thank you for the fast reply. I discovered this thread before, but the shown solution didn't work for me with Geomerative library.

I tried something like this:

Code:


 frameToSave = createGraphics(width, height, JAVA2D);
 frameToSave.beginDraw();
 frameToSave.noFill();
 svg.draw();               //Draws my Geomerative RShape
 frameToSave.endDraw();
 frameToSave.save("Image.png");

This was my pretty green approach which of course didn't work and created a transparent image without my drawn SVG.

fejngold

Re: Save SVG as PNG without Background
Reply #3 - Dec 21^st, 2009, 7:07am

Okay, I was off the track.

As it seems I don't need to create a PGraphic in view of the fact that the Geomerative has one. It's named "g".

Unfortunately I'm still having the problem of the transparent background.

Doing

Code:


         g.noFill();
         svg.draw();
         g.save("test.png");

returns at least a PNG containing the SVG paths ,but still with a kind of grey background.

PhiLho

Re: Save SVG as PNG without Background
Reply #4 - Dec 21^st, 2009, 8:16am

JavaDoc of Geomerative is a bit terse...

But well, I see in RShape page:
Quote:

void draw(processing.core.PApplet p)
void draw(processing.core.PGraphics g)

You use... well, neither!
You should use:
Code:

frameToSave.beginDraw();
frameToSave.noFill();
svg.draw(frameToSave);		   //Draws my Geomerative RShape
frameToSave.endDraw();

You have to tell Geomerative it has to use your own graphics to do its job, it cannot guess which one to use.

fejngold YaBB Newbies Offline Posts: 14	Re: Save SVG as PNG without Background Reply #5 - Dec 21^st, 2009, 8:44am Thanks a lot. This works fine. Great!!!

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