Handy or similar pencil sketch library in Processing.py

Processing.py
1

Is there a way to make your sketches look more like they have been sketched by a pencil (ie rough sketch type lines)?

I’ve seen people using the Handy library in other processing modes but can’t see any info on it within Processing.py?

Thanks!

2

You can use most Processing (Java) libraries with Python Mode. For example, to use Handy, install it like any other library in the IDE using –

Sketch > Import Library > Add Library

Once that’s installed, you can create a Handy sketch using Python Mode like so:

add_library('handy')
 
def setup():
  size(300, 200)
  global h
  h = HandyRenderer(this)
 
def draw():
  background(235, 215, 182)
  h.rect(75, 50, 150, 100)

This is an animated sketch, but static sketches should work fine, too.

2 Likes
3

When I try this I get a ClassCastExeption:

java.lang.ClassCastException: class jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to class java.net.URLClassLoader (jdk.internal.loader.ClassLoaders$AppClassLoader and java.net.URLClassLoader are in module java.base of loader ‘bootstrap’)
at jycessing.LibraryImporter.addJarToClassLoader(LibraryImporter.java:315)
at jycessing.LibraryImporter.recursivelyAddJarsToClasspath(LibraryImporter.java:164)
at jycessing.LibraryImporter.addLibrary(LibraryImporter.java:140)
at jycessing.LibraryImporter$1.call(LibraryImporter.java:82)
at org.python.core.PyObject.call(PyObject.java:480)
at org.python.core.PyObject.call(PyObject.java:484)
at org.python.pycode._pyx61.f$0(sketch_221203c.pyde:1)
at org.python.pycode._pyx61.call_function(sketch_221203c.pyde)
at org.python.core.PyTableCode.call(PyTableCode.java:171)
at org.python.core.PyCode.call(PyCode.java:18)
at org.python.core.Py.runCode(Py.java:1614)
at org.python.core.Py.exec(Py.java:1658)
at org.python.pycode._pyx60.f$0(/var/folders/pz/_61lfmhn4gj6g5mh6v66b7cm0000gn/T/sketch_221203c3047145917091245605/sketch_221203c.pyde:96)
at org.python.pycode._pyx60.call_function(/var/folders/pz/_61lfmhn4gj6g5mh6v66b7cm0000gn/T/sketch_221203c3047145917091245605/sketch_221203c.pyde)
at org.python.core.PyTableCode.call(PyTableCode.java:171)
at org.python.core.PyCode.call(PyCode.java:18)
at org.python.core.Py.runCode(Py.java:1614)
at org.python.core.Py.exec(Py.java:1658)
at org.python.util.PythonInterpreter.exec(PythonInterpreter.java:276)
at jycessing.PAppletJythonDriver.processSketch(PAppletJythonDriver.java:233)
at jycessing.PAppletJythonDriver.findSketchMethods(PAppletJythonDriver.java:613)
at jycessing.Runner.runSketchBlocking(Runner.java:399)
at jycessing.mode.run.SketchRunner.lambda$2(SketchRunner.java:112)
at java.base/java.lang.Thread.run(Thread.java:833)

4

Are you using Processing 3.5.4? What is your OS, system, etc. setup?

5

macOS Catalina, Processing 4.0.1

6

For Python Mode, use Processing 3.5.4