Status of proSVG - SVG Export Plugin

artsnova

Status of proSVG - SVG Export Plugin

in Contributed Library Questions • 1 year ago

Hi, I just installed the proSVG library found here: http://sites.google.com/site/kdlprosvg/Home
in order to output SVG files.
The date associated with this library is Oct. 2008.

Trying to run either of the two example programs provided I get a null pointer exception. Following is the complete error message:
Exception in thread "Animation Thread" java.lang.NullPointerException
    at processing.core.PGraphicsJava2D.loadPixels(Unknown Source)
    at prosvg.SVGKdl.save(SVGKdl.java:88)
    at processing.core.PApplet.saveFrame(Unknown Source)
    at testsvtTEMP.draw(testsvtTEMP.java:46)
    at processing.core.PApplet.handleDraw(Unknown Source)
    at processing.core.PApplet.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:662)

Has anyone else had success using this library with Processing 1.5.1?

Best Regards, Jim

Replies(5)

davemonst..

Re: Status of proSVG - SVG Export Plugin

1 year ago

Hi Jim,

I have the same sort of error. Did you find a solution for exporting SVG?

Exception in thread "Animation Thread" java.lang.NoClassDefFoundError: processing/core/PGraphics2
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at processing.core.PApplet.makeGraphics(PApplet.java:1315)
at processing.core.PApplet.size(PApplet.java:1146)
at processing.core.PApplet.size(PApplet.java:1106)
at Letters.setup(Letters.java:31)
at processing.core.PApplet.handleDraw(PApplet.java:1608)
at processing.core.PApplet.run(PApplet.java:1530)
at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.ClassNotFoundException: processing.core.PGraphics2
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 19 more

PhiLho

Re: Status of proSVG - SVG Export Plugin

1 year ago

PGraphics2 has disappeared from Processing a long time ago... Alas, it seems the library is quite outdated now.
Looking at the link given in the first message, I see at least this variant addresses the issue you have...
Looks like the sources are available, perhaps somebody can upgrade it.

PhiLho

Re: Status of proSVG - SVG Export Plugin

1 year ago

Looking at the source of SVGOut class (identical to SVGKdl, beside the class name), I see it mimics too closely the behavior of the original save(), even handling pixel formats not needed there, and thus doing a loadPixels() making no sense here, the source of the original problem.
Perhaps there is an easy fix...

PhiLho

Re: Status of proSVG - SVG Export Plugin

1 year ago

I finally made my own library (inspired by proSVG idea of selecting some jars of Batik). See the announcement at https://forum.processing.org/topic/pgraphicssvg-a-new-renderer-for-svg-graphics

artsnova

Re: Status of proSVG - SVG Export Plugin

1 year ago

Hi Dave,

Sorry about not responding sooner. No I did not find a solution. Instead I just went with outputting raster instead of vector.

I haven't tried PhiLho's solution yet and am not sure when I'll get back to the particular set of circumstances that led me to attempt to produce svgs.

Best Regards, Jim

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