Previously in my post
getting started for wizards I showed how to create a sketch that would be more familiar to people coming from processing to ruby-processing. The sketch does not need to be explicitly wrapped as a class (that extends from Processing::App), since ruby-processing does that for you under the hood. This is the DSL approach to writing ruby-processing sketches which I favour, and makes it easier to read across from other processing modes to ruby-processing. However since ruby-processing-2.6.0 it is just as easy to create a classical sketch.
rp5 create classic_sketch 200 200 --wrap
rp5 watch classic_sketch.rb
Open a new console and 'vim classic_sketch.rb' or us another suitable editor
class ClassicSketch < Processing::App
def setup
size 200, 200
end
def draw
end
end
For instant gratification and to relocate the sketch on your display un-comment the last line of the sketch and save (also note this line was "not" required to run the sketch, rp5 run or rp5 watch takes care of creating a new instance of sketch for you). You only use this form to send parameters, such as 'x offset' to your sketch
class ClassicSketch < Processing::App
def setup
size 200, 200
end
def draw
end
end
ClassicSketch.new(x: 20, y: 20)
The sketch updates auto-magically...
Already in the works for the next release is the possibility of placing the sketch on your screen using the config file '~/.rp5rc' so this is kind of redundant, but a post
initialization hook might get added so you will be able to send all sorts of other parameters. Which are then available by overriding the post_initialization hook method (See
Sandi Metz POODR)
Next change the background of your sketch
class ClassicSketch < Processing::App
def setup
size 200, 200
end
def draw
background 0
end
end
ClassicSketch.new(x: 20, y: 20)
Next create a blue box.
class ClassicSketch < Processing::App
def setup
size 200, 200
end
def draw
background 0
fill 0, 0, 200
rect 40, 50, 120, 100
end
end
ClassicSketch.new(x: 20, y: 20)
To create class wrapped P3D sketch just "rp5 create classy_sketch 200 200 p3d --wrap" actually it probably doesn't matter where you put the --wrap option after create (but the order of the other variables is important)...
