fix: Handle Joyce Geometry Applet color specifications #33
@ -51,8 +51,9 @@ jQuery.getScript 'https://www.geogebra.org/apps/deployggb.js', =>
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jApp.height,
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appletOnLoad: (api: AppletObject) =>
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elements: JoyceElements := {}
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backgroundRGB := [255, 255, 255] as RGB
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for child of jApp.children
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dispatchJcommand api, child, elements
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dispatchJcommand api, child, elements, backgroundRGB
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api.setCoordSystem -10, 10 + jApp.width, -10, 10 + jApp.height
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api.setAxesVisible false, false
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api.setGridVisible false
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@ -90,21 +91,26 @@ type XYZ = RGB
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// api, consulting and extending by side effect the elements that are
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// present in that applet
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function dispatchJcommand(
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api: AppletObject, param: Element, elements: JoyceElements): void
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api: AppletObject,
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param: Element,
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elements: JoyceElements
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backgroundRGB: RGB): void
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val := param.getAttribute 'value'
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unless val return
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attr := param.getAttribute 'name'
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backgroundHex .= '#FFFFFF'
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switch attr
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'background'
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backgroundHex = `#${val}`
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backgroundHex := `#${val}`
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api.setGraphicsOptions 1, bgColor: backgroundHex
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newback := colorsea(backgroundHex).rgb()
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for i of [0..2]
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backgroundRGB[i] = newback[i]
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'title'
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api.evalCommand `TitlePoint = Corner(1,1)
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Text("${val}", TitlePoint + (2,5))`
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/e\[\d+\]/
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num := parseInt(attr.slice(2))
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{commands, callbacks, parts} := jToG val, elements, num, backgroundHex
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{commands, callbacks, parts} := jToG val, elements, num, backgroundRGB
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if commands.length
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lastTried .= 0
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if commands.filter((&)).every (cmd) =>
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@ -129,7 +135,7 @@ function jToG(
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jCom: string,
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elements: JoyceElements,
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index: number,
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backgroundHex: string): Commander
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backgroundRGB: RGB): Commander
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[jname, klass, method, data, ...colors] := jCom.split ';'
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cmdr .= freshCommander()
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unless klass in classHandler
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@ -169,7 +175,7 @@ function jToG(
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else // we have to decorate
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dimension .= cmdr.parts.findLastIndex .includes name
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cmdr.callbacks.push (api: AppletObject, parts: DimParts) =>
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trace := klass is 'polygon'
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trace := false // e.g., klass is 'polygon'
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// Operate in order faces, lines, point, caption so that
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// we can adjust components after setting overall color, etc.
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@ -184,11 +190,13 @@ function jToG(
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console.log 'Hiding face', face if trace
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api.setVisible face, false
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else
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faceRGB := joyce2rgb(colors[3] or 'brighter', backgroundHex)
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faceRGB := joyce2rgb(colors[3] or 'brighter', backgroundRGB)
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deep := ['circle', 'polygon', 'sector']
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filling := deep.includes(klass) ? 0.7 : 0.2
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for each face of parts[2]
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console.log 'Coloring face', face, 'to', colors[3] if trace
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api.setVisible face, true
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api.setFilling face, 0.3
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api.setFilling face, filling
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api.setColor face, ...faceRGB
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// Lines default to black:
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@ -198,8 +206,7 @@ function jToG(
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console.log 'Hiding line', line if trace
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api.setVisible line, false
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else
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black: RGB := [0, 0, 0]
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lineRGB := colors[2] ? joyce2rgb colors[2], backgroundHex : black
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lineRGB := joyce2rgb(colors[2] or 'black', backgroundRGB)
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for each line of parts[1]
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console.log 'Coloring line', line, 'to', colors[2] if trace
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api.setVisible line, true
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@ -214,7 +221,7 @@ function jToG(
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console.log 'Hiding point', point if trace
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api.setVisible point, false
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else if dimension is 0 or colors[1] // Need to color the points
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ptRGB := colors[1] ? joyce2rgb colors[1], backgroundHex
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ptRGB := colors[1] ? joyce2rgb colors[1], backgroundRGB
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: pointDefaultRGB name, method
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for each point of parts[0]
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console.log 'Coloring point', point, 'to', colors[1] if trace
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@ -251,7 +258,7 @@ function jToG(
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unless parts[0].includes ex2 then ex2 = `Centroid(${ex2})`
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`(4*${ex1}+${ex2})/5`
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api.evalCommand `${textName} = Text("${jname}", ${locationExpr})`
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api.setColor textName, ...joyce2rgb colors[0], backgroundHex
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api.setColor textName, ...joyce2rgb colors[0], backgroundRGB
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// and hide the underlying GeoGebra label
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api.setLabelVisible name, false
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else if colors[0]
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@ -267,7 +274,6 @@ function jToG(
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api.setLabelVisible name, show
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// window[hideListener] = (arg) =>
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// console.log('Hello', arg, 'disappearing', name)
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// api.setVisible name, false
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// api.registerObjectUpdateListener name, hideListener
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if cmdr.ends // line or sector
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@ -283,22 +289,51 @@ function jToG(
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function invisible(cname: string): boolean
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cname is '0' or cname is 'none'
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function joyce2rgb(cname: string, backgroundHex: string): RGB
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function joyce2rgb(cname: string, backgroundRGB?: RGB): RGB
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whiteRGB: RGB := [255, 255, 255]
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bg: RGB := backgroundRGB or whiteRGB
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switch cname
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// RGB values from Duck Duck Go search on "[COLOR] rgb"
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/black/i
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[0,0,0]
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/blue/i
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[0,0,255]
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/cyan/i
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[0,255,255]
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/darkgray/i
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[128,128,128]
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/^gray/i
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[169,169,169]
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/green/i
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[0,255,0]
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/lightgray/i
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[211,211,211]
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/magenta/i
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[255,0,255]
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/orange/i
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[255,165,0]
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/pink/i
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[255,192,203]
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/red/i
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[255,0,0]
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/white/i
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[255,255,255]
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/yellow/i
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[255,255,0]
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/random/i
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colorsea.random().lighten(40).rgb()
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/background/i
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bg
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/brighter/i
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colorsea(backgroundHex).lighten(20).rgb()
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colorsea(bg).lighten(30).rgb()
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/darker/i
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colorsea(backgroundHex).darken(20).rgb()
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colorsea(bg).darken(20).rgb()
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/^[0-9A-F]{6}$/i
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colorsea(`#${cname}`).rgb()
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/^\d+,\d+,\d+$/
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// HSB specification
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[H,S,B] := cname.split(',').map (s) => parseInt s
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colorsea.hsv(H, S, B).rgb()
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else
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console.log 'Could not parse color:', cname
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[128, 128, 128]
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@ -307,10 +342,10 @@ function pointDefaultRGB(name: string, method: string): RGB
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// Need to short-circuit with green for pivot point, once that is implemented
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switch method
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'free'
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[255, 0, 0]
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joyce2rgb 'red'
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/.*[Ss]lider$/
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[255, 165, 0]
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else [0,0,0]
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joyce2rgb 'orange'
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else joyce2rgb 'black'
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function geoname(jname: JoyceName, elements: JoyceElements): GeoName
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numCode .= 0n
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