Experiments with ruby-processing (processing-2.2.1) and JRubyArt for processing-3.0

Friday, 1 October 2010

SunflowAPIAPI test example using jruby

See previous post for how to setup java libraries. If you are mad like me, and have updated sunflow to use the latest janino compiler you should require the commons-compiler.jar as well.

# sunflow_test.rb NB: run this script directly with jruby

require 'library/sunflow_api/library/sunflow_api.jar'
require 'library/sunflow/library/sunflow.jar'
require 'library/sunflow/library/janino.jar'

class SunflowTest
  API = Java::Com::briansteen::SunflowAPIAPI
  SMath = Java::Org::sunflow::math
  attr_reader :sunflow

  def initialize width = 500, height = 500
    @sunflow = API.new
    sunflow.set_camera_position(0, 2.5, -5)
    sunflow.set_camera_target(0, 0, 0)
    sunflow.set_thinlens_camera("thinLensCamera", 50, width/height)
  def create_scene
    sunflow.draw_plane("ground", SMath::Point3.new(0,-3.5,0), SMath::Vector3.new(0, 1, 0))
    sunflow.draw_sphere_flake("mySphereFlake", 20, SMath::Vector3.new(0, 1, 0), 1)
  def render_scene filename = nil
    sunflow.setPathTracingGIEngine 6           
    # render
    sunflow.render unless filename
    if filename
      begin # test for dodgy filename/path
        file = File.new(filename, "w")
        sunflow.render(filename) # save as png image
        puts "Warning #{filename} is not writable"

test = SunflowTest.new

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I have developed JRubyArt and propane new versions of ruby-processing for JRuby- and processing-3.2.2