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Octocat.js

Build your own octocat.

https://myoctocat.dev


alt text

How it works

This library is used within https://myoctocat.dev to make an octocat. It maintains a set of options and then renders an SVG with all of the pieces and then draws it to a canvas.

To import:

import Octocat from 'octocat.js'

Or to import the available options:

import {OctocatOptions} from 'octocat.js'

Create and draw Octocat:

let octocat = new Octocat()
octocat.draw()

In order to draw the octocat we need to fetch the associated SVG documents and splice them together (checking any conflicting options). This tends to be very expensive so we make efforts to cache the following:

  • the fetched base SVG
  • the fetched pieces
  • the completed SVG
  • the drawn SVG

Whenever you update an option (or call redraw directly) the SVG must be redrawn which may cause additional fetching. For this reason it is not immediate and will attempt to reuse the cache while it redraws in the background.

Docs

Colors

Note: colors can be any valid SVG or CSS2 Color including alpha transparency. However, alpha transparency tends to be very computationally expensive when used within canvas elements.

Method Description
setBodyColor(colors) Changes the body colors. colors is a hash with primary, underside, suctions keys and color values. e.g. { primary: '#282828', underside: '#494949', suctions: '#99C7C9' }
setBottom(bottom) Changes the bottoms. bottom is a string containing a bottoms option.
setEyeColor(color) Set the eye color. color is a color value.
setEyes(eyes) Changes the eyes. eyes is a string containing an eyes option.
setEyewear(eyewear) Changes the eyewear. eyewear is a string containing an eyewear option.
setFaceColor(colors) Changes the face colors. colors is a hash with face, nose keys and color values. e.g. { face: "#FFC5AF", nose: "#A34F3E" }
setFacialHair(facialHair) Changes the facial hair. facialHair is a string containing an facial hair option.
setFacialHairColor(facialHairColor) Set the facial hair color. facialHairColor is a color value.
setFootwear(footwear) Changes the footwear. footwear is a string containing a footwear option.
setHair(hair) Changes the hair. hair is a string containing a hair option.
setHairColor(hairColor) Set the hair color. hairColor is a color value.
setHeadgear(headgear) Changes the headgear. headgear is a string containing a headgear option.
setAccessory(accessory) Changes the accessory. accessory is a string containing a accessory option.
setMouth(mouth) Changes the mouth. mouth is a string containing a mouth option.
setProp(prop) Changes the prop. prop is a string containing a prop option.
setTop(top) Changes the top. top is a string containing a top option.
setPuddleColor(puddleColor) Set the puddle color. puddleColor is a color value.
noPuddle() Do not draw the puddle.
setStroke(color, width, opacity) If set, the octocat will have an outline stroke with the color width and opacity specified. Note, opacity should be left at 1 (the default, can be omitted) in almost all cases. Setting the stroke requires drawing the octocat twice (once with stroke and once without) and is very computationally expensive.
noStroke() Turn off the stroke (if it had been turned on). By default there is no stroke.
setFill(color) Fill the octocat with a flat color. color is a color value.
noFill() Turn off the fill (if it had been turned on). By default there is no fill.
customize(svg) Once this svg is generated for the current options the customize method is called. You can override this method to make additional changes to the svg before it is rendered. i.e., octocat.customize = (svg) => { ...do something here with the svg dom... }
redraw() Forces the SVG to redraw. You should not need to use this (it is called internally in all known cases where redrawing would be required).
blink(open, closed) Makes the octocat "blink" on a timer. open and closed are optional parameters. If provided they should be strings containing an eyes option. If not included the blinking will use the current eyes option and Neutral Closed when the eyes are closed. If you are working in p5 add octocat.blink() to the setup function to have the octocat blink periodically.
noBlink() Turn off the blinking (if it had been turned on). By default there is no blinking.
randomize(feature) Randomize one or all of the options for the current octocat. The feature parameter is optional, if provided it should be a feature name to randomize (one of bodyColor, bottom, eyeColor, eyes , eyewear, faceColor, facialHair, facialHairColor, footwear, hair , hairColor, headgear, accessory, mouth, prop, top , puddleColor). If omitted, all features will be randomized. Generally this will require a full redraw of the octocat and can be slow.
draw(x, y, w, h) Draw the (cached image) current octocat. The x, y, w, and h parameters are all optional. If omitted they will default to 0, 0, 300, 300. This method is safe to use inside of a draw loop.
invertocat() Returns a text version of the GitHub invertocat logo (ignoring the options).
ascii() Returns a text version of a default Octocat (ignoring the options).

Contributors

Made by @gavinzanerafter and @jeffrafter based on MyOctocat.com

Special thanks to:

  • MyOctocat.com (for all of the original code)
  • @nixpad
  • @probablycorey