RubySketch, awarded an "Outstanding Performance Award" at the Fukuoka Ruby Awards 2022, is an app to enjoy graphics programming easily.
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
