load PShape from String (not file)?

Core Library Questions

niteshade

load PShape from String (not file)?

in Core Library Questions • 2 years ago

Hi there,

I have SVG code (XML) in a String, which I'd like to load into a PShapeSVG. LoadShape seems to only work from a file.

Any ideas? Thanks.

Replies(8)

davbol

Re: load PShape from String (not file)?

2 years ago

PShapeSVG theShape = new PShapeSVG(new XMLElement(theString));

niteshade

Re: load PShape from String (not file)?

2 years ago

hmmm... I get this error:

Copy code

Exception in thread "Animation Thread" java.lang.RuntimeException: root is not <svg>, it's <<?xml version="1.0" encoding="utf-8"?>
<<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"...

Does loadShape() do any fancy conversion or what, to tell PShape that it's handling SVG? I tried deleting everything before the doctype, but that didn't work either.

PhiLho

Re: load PShape from String (not file)?

2 years ago

Remove everything before <svg, perhaps.

niteshade

Re: load PShape from String (not file)?

2 years ago

thanks for your help.

It still has the same error, however... am I supposed to convert the SVG String into something else?

It seems when I set the content of the XMLElement, p5 adds on a couple of extra characters.

this...

Copy code

XMLElement svg = new XMLElement(shapeString);
System.out.println(svg);

produces...

Copy code

<<svg version="1.1"...
</svg>
/>

Any idea why the extra " <... />"? Those aren't in my SVG file, or my String... XMLElement puts them there. I guess I can try to kluge with some string manipulation, but that seems awfully messy

PhiLho

Re: load PShape from String (not file)?

2 years ago

Where the new XMLElement(xmlString) comes from? (just curious). Another person has a similar issue. In current version of code, you have to use XMLElement.parse(xmlString) instead.

davbol

Re: load PShape from String (not file)?

2 years ago

from 1.2.1, wasn't aware that constructor had vanished in 1.5, used to work fine, sorry for the misdirection

ugh, hope i never have to revisit several sketches that use that constructor all over the place!

[rant]if it's a public constructor, and beta is over, shouldn't it persist through minor versions at least?[/rant]

niteshade

Re: load PShape from String (not file)?

2 years ago

ok, getting warmer... this code at least does not throw errors:

Copy code

XMLElement svg = new XMLElement();
svg.parse(shapeString);
System.out.println("the content is: " + svg.getContent());
PShapeSVG shape = new PShapeSVG(svg);

but the println() reveals that the svg does not contain content, so I get a NullPointerException later on. Any idea?

PhiLho

Re: load PShape from String (not file)?

2 years ago

Re-read my answer and use the code I show...

Top Reply