RubySketch - Processing IDE

This app includes Ruby language interpreter known as CRuby or MRI (Matz Ruby Implementation) and a simple text editor.
So you can edit and run a ruby script.

It also has an API that is almost compatible with Processing that is well known as a Creative Coding framework.
So you can enjoy graphics programming on your iPhone or iPad.

This is a list of functions implemented to be compatible with the Processing API.
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width, height, colorMode, angleMode, rectMode, ellipseMode, imageMode, fill, stroke, strokeWeight, strokeCap, strokeJoin, noFill, noStroke, textFont, textSize, textWidth, textAscent, textDescent, textAlign, background, point, line, rect, ellipse, circle, arc, square, triangle, quad, curve, bezier, text, image, copy, translate, scale, rotate, pushMatrix, popMatrix, resetMatrix, pushStyle, popStyle, push, pop, setup, draw, key, mousePressed, mouseReleased, mouseMoved, mouseDragged, touchStarted, touchEnded, touchMoved, windowWidth, windowHeight, frameCount, frameRate, displayDensity, mouseX, mouseY, pmouseX, pmouseY, touches, loop, noLoop, redraw, abs, ceil, floor, round, pow, sq, mag, dist, norm, lerp, map, min, max, constrain, radians, degrees, sin, cos, tan, asin, acos, atan, atan2, noise, random, createVector, createGraphics, loadImage