Comparison to Processing

Below you can find comparison Processing functions with Clojure2d.

Assuming that following variables are defined:

• window - display created with [[show-window]]
• cnvs - canvas created with [[canvas]] inside drawing context (see [[with-canvas->]] or [[with-canvas]])

And following namespaces are loaded:

(:require [clojure2d.core :refer :all] ;; generaral Clojure2d functions
          [clojure2d.pixels :as p] ;; pixels operations
          [clojure2d.color :as c] ;; color operations
          [fastmath.core :as m] ;; general math functions
          [fastmath.random :as r]) ;; random and noise

Structure

Processing	Clojure2d	Comments
draw()	Any function with following signature (fn [canvas window frame local-state] ...) attached to window created with [[show-window]] (:draw-fn key).	Such function is called before refresh of the display. Result is passed as local-state in the next call.
exit()	[[close-window]]	Closes window programmatically.
loop()	not implemented	possible in future versions
noLoop()	not implemented	possible in future versions
popStyle()	not implemented
pushStyle()	not implemented
redraw()	not implemented	not necessary
setup()	Any function with following signature (fn [canvas window] ...) attached to window created with [[show-window]] (:setup key).	Returned value is treated as local-state for first call of drawing function.
thread()		use future
all the rest	use Clojure

Environment

Processing	Clojure2d	Comments
cursor()	not implemented	possible in future versions
delay()	not implemented	use Thread/sleep
displayDensity()	not implemented
focused	not implemented	possible in future versions
frameCount	implemented	frame number is passed to the drawing function as third parameter
frameRate()	implemented	set :fps key when [[show-window]] is called
frameRate	not implemented
fullScreen()	not implemented	possible in future versions
height	[[height]]	it's a function working on canvas/window/image
noCursor()	not implemented	possible in future versions
noSmooth()	implemented	use :low quality key in [[canvas]] call
pixelDensity()	not implemented	for Retina use two times bigger canvas/window and call (scale canvas 2).
pixelHeight	not implemented
pixelWidth	not implemented
settings()	not necessary
size()	implemented	set size in [[canvas]] or [[show-window]] calls
smooth()	implemented	use one of the keys defined in [[rendering-hints]] and pass to [[canvas]] or [[show-window]]
width	[[width]]	it's a function working on canvas/window/image

Data

Use Clojure2d data types and functions

Control

Use Clojure2d functions