feat: Get all of Rostamian's old pages working #44
@ -101,7 +101,7 @@ export interface AppletObject {
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getXcoord(objName: string): number;
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getYcoord(objName: string): number;
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getZcoord(objName: string): number;
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setCoords(objName: string, x: number, y: number, z: number): void;
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setCoords(objName: string, x: number, y: number, z?: number): void;
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getValue(objName: string): number;
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getVersion(): string;
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getScreenshotBase64(callback: (data: string) => void, scale?: number): void;
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@ -49,6 +49,28 @@ adapParams: AdapParams :=
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? {loader: 'https://www.geogebra.org/apps/deployggb.js', joyceApplets: []}
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: JSON.parse(adapptScript.dataset.params ?? '') as AdapParams
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type ConstructionData
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id: string
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bg: RGB
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is3d: boolean
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width: number
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height: number
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elements: JoyceElements
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pivot: string
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// Global data setup for pivoting (ugh, but necessary because the api
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// is not passed to the callback, so we have to look up the slider in
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// a global list):
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type PivotData
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api: AppletObject
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pivot: string
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lastAngle: number
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rotatable: string[]
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fixed: Record<string, boolean>
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pivotData: Record<string, PivotData> := {}
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function postApplets(jApplets: AppletDescription[], codebase = '')
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for each jApp of jApplets
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params := {
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@ -58,10 +80,8 @@ function postApplets(jApplets: AppletDescription[], codebase = '')
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jApp.width,
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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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config3d := contains3d jApp.params
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if config3d
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is3d := contains3d jApp.params
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if is3d
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api.enable3D true
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api.setPerspective 'T'
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// Get rid of the xy-plane indicator
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@ -72,10 +92,24 @@ function postApplets(jApplets: AppletDescription[], codebase = '')
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api.setPerspective 'G'
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if adapParams.config?.algebra
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api.setPerspective '+A'
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elements := {}
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pivot .= ''
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if 'pivot' in jApp.params
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if is3d
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console.warn('Geometry Applet "pivot" only supported for '
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+ '2D constrcutions. Ignoring.')
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else
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pivot = geoname(jApp.id, elements, 'point') + 'Pivot'
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pivotData[pivot] = {
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api, jApp.params.pivot,
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lastAngle: 0, rotatable: [], fixed: {}}
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cdata: ConstructionData := {
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bg: ([255, 255, 255] as RGB),
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is3d, jApp.id, jApp.width, jApp.height, elements, pivot}
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for name, value in jApp.params
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dispatchJcommand
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api, name, value, elements, backgroundRGB, config3d
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if config3d
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api, name, value, cdata
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if is3d
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depth .= jApp.width
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if jApp.height > depth then depth = jApp.height
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api.setCoordSystem
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@ -135,7 +169,7 @@ type ClassHandler = (
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method: string,
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args: JoyceArguments,
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index: number,
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is3d: boolean) => Commander
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cdata: ConstructionData) => Commander
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type RGB = [number, number, number]
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type XYZ = RGB
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@ -146,28 +180,26 @@ function dispatchJcommand(
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api: AppletObject,
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name: string,
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value: string,
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elements: JoyceElements
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backgroundRGB: RGB,
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is3d: boolean): void
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cdata: ConstructionData): void
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switch name
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'background'
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newback := joyce2rgb value, backgroundRGB
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cdata.bg = joyce2rgb value, cdata.bg
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if adapParams.config?.commands
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console.log 'Setting background to', value, 'interpreted as',
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newback
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for i of [0..2]
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backgroundRGB[i] = newback[i]
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api.setGraphicsOptions 1, bgColor: colorsea(backgroundRGB).hex()
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cdata.bg
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api.setGraphicsOptions 1, bgColor: colorsea(cdata.bg).hex()
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'title'
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if adapParams.config?.commands
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console.log 'Setting title to', value
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corner := is3d ? 'Corner(-1,1)' : 'Corner(1,1)'
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corner := cdata.is3d ? 'Corner(-1,1)' : 'Corner(1,1)'
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api.evalCommand `TitlePoint = ${corner}
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Text("${value}", TitlePoint + (2,5))`
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'pivot'
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return // already handled in postApplets
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/e\[\d+\]/
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num := parseInt(name.slice(2))
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{commands, callbacks, parts} :=
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jToG value, elements, num, backgroundRGB, is3d
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jToG value, num, cdata
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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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@ -180,16 +212,14 @@ function dispatchJcommand(
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(part of translation of '${value}')
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failed.`
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else console.warn `Could not parse command '${value}'`
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else console.warn `Unkown param ${name} = ${value}`
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else console.warn `Unknown param ${name} = ${value}`
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// Parses a Joyce element-creating command, extending the elements
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// by side effect:
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function jToG(
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jCom: string,
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elements: JoyceElements,
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index: number,
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backgroundRGB: RGB
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is3d: boolean): Commander
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cdata: ConstructionData): Commander
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[jname, klass, method, data, ...colors] := jCom.split ';'
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if adapParams.config?.commands
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console.log 'Defining', jname, 'as a', klass, 'constructed by',
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@ -199,7 +229,9 @@ function jToG(
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console.warn `Unknown entity class ${klass}`
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return cmdr
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assertJoyceClass klass // shouldn't need to do that :-/
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name := if /^\p{L}\w*$/u.test jname then jname else geoname jname, elements
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isPivot := !!cdata.pivot and jname is pivotData[cdata.pivot].pivot
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name := geoname jname, cdata.elements, klass
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if isPivot then pivotData[cdata.pivot].pivot = name
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args: JoyceArguments := {}
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usesCaptions := []
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for each jdep of data.split ','
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@ -207,17 +239,17 @@ function jToG(
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if scalar is scalar // not NaN
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(args.scalar ?= []).push scalar
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continue
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unless jdep in elements
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unless jdep in cdata.elements
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console.warn `Reference to unknown geometric entity ${jdep} in $jCom}`
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return cmdr
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usesCaptions.push jdep
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{klass: depKlass, otherName: depGeo, ends} := elements[jdep]
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{klass: depKlass, otherName: depGeo, ends} := cdata.elements[jdep]
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(args[depKlass] ?= []).push depGeo
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if depKlass is 'point'
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(args.subpoints ?= []).push depGeo
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else if depKlass is 'line'
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(args.subpoints ?= []).push ...ends ?? []
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cmdr = classHandler[klass] name, method, args, index, is3d
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cmdr = classHandler[klass] name, method, args, index, cdata
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unless name is jname then cmdr.callbacks.push (api: AppletObject) =>
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api.setCaption name, jname
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api.setLabelStyle name, 3 // style CAPTION = 3
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@ -226,6 +258,25 @@ function jToG(
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for each aux of cmdr.auxiliaries
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api.setAuxiliary aux, true
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api.setVisible aux,false
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// set up the pivot if there is one
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if isPivot
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unless klass is 'point'
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console.warn(`Can only pivot around a point, not the ${klass}`
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+ `named ${jname}. Ignoring.`)
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cdata.pivot = ''
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cmdr.commands.push(`${cdata.pivot} = `
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+ `Slider(0°,360°,1°,1,${cdata.width/3},true,true,false,false)`)
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cmdr.callbacks.push (api: AppletObject) =>
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api.setCaption cdata.pivot, 'Rotate Display'
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api.setLabelStyle cdata.pivot, 3
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api.setCoords(cdata.pivot, 2*cdata.width/3, cdata.height-10)
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// Not sure how to let TypeScript deal with putting a new function
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// on the global window object, so punting at least for now:
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// @ts-ignore
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window.pivotListener = pivotListener
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api.registerObjectUpdateListener(cdata.pivot, 'pivotListener')
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// Create callback to assign colors
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if colors.length is 4 and colors.every (color) => invisible color
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cmdr.callbacks.push (api: AppletObject) => api.setVisible name, false
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@ -243,11 +294,11 @@ function jToG(
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console.log 'Fading out interior of', face if trace
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// hide the interior by making it transparent
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api.setFilling face, 0
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else if face not in elements
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else if face not in cdata.elements
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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', backgroundRGB)
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faceRGB := joyce2rgb(colors[3] or 'brighter', cdata.bg)
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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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@ -259,28 +310,30 @@ function jToG(
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// Lines default to black:
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if invisible colors[2]
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for each line of parts[1]
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if line is name or line not in elements
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if line is name or line not in cdata.elements
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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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lineRGB := joyce2rgb(colors[2] or 'black', backgroundRGB)
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lineRGB := joyce2rgb(colors[2] or 'black', cdata.bg)
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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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api.setColor line, ...lineRGB
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// Now color the points:
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console.log 'Considering point colors for', name if trace
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if trace
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console.log
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'Considering point colors for', name, 'of dimension', dimension
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if invisible colors[1]
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// Hide all the dim-0 elements that are not distinct independent
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// items:
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for each point of parts[0]
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if point is name or point not in elements
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if point is name or point not in cdata.elements
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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], backgroundRGB
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: pointDefaultRGB name, method
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ptRGB := colors[1] ? joyce2rgb colors[1], cdata.bg
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: pointDefaultRGB name, method, isPivot
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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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api.setVisible point, true
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@ -290,12 +343,12 @@ function jToG(
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if invisible colors[0]
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console.log 'Hiding label', name if trace
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api.setLabelVisible name, false
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else if colors[dimension] and colors[dimension] is not colors[0]
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else if colors[dimension+1] and colors[dimension+1] is not colors[0]
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// Have to make a text to provide the caption, since GeoGebra
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// doesn't allow caption different color from entity.
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textName := 'GeoText' + index
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locationExpr := switch klass
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when 'point' then `1.02${name})`
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when 'point' then `1.02${name}`
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when 'line'
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(`Midpoint(${name}) + `
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+ `Rotate(Direction(${name})*Length(${name})*0.02, pi/2)`)
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@ -315,8 +368,12 @@ function jToG(
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unless parts[0].includes ex1 then ex1 = `Centroid(${ex1})`
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unless parts[0].includes ex2 then ex2 = `Centroid(${ex2})`
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`(4*${ex1}+${ex2})/5`
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api.evalCommand `${textName} = Text("${jname}", ${locationExpr})`
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api.setColor textName, ...joyce2rgb colors[0], backgroundRGB
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textCmd := `${textName} = Text("${jname}", ${locationExpr})`
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textCol := joyce2rgb colors[0], cdata.bg
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if trace
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console.log `Making text '${textCmd}' colored`, textCol
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api.evalCommand textCmd
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api.setColor textName, ...textCol
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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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@ -331,19 +388,35 @@ function jToG(
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console.log 'Setting label vis of', name, 'to', show if trace
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api.setLabelVisible name, show
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// window[hideListener] = (arg) =>
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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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elements[jname] =
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{otherName: name, usesCaptions, klass, cmdr.ends}
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elements[name] =
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{otherName: jname, usesCaptions, klass, cmdr.ends}
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else // any other geometry
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elements[jname] = {otherName: name, usesCaptions, klass}
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elements[name] = {otherName: jname, usesCaptions, klass}
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cdata.elements[jname] = {otherName: name, usesCaptions, klass, cmdr.ends}
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cdata.elements[name] = {otherName: jname, usesCaptions, klass, cmdr.ends}
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cmdr
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function pivotListener(slider: string)
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pd := pivotData[slider]
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newval := pd.api.getValue slider
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if newval is pd.lastAngle then return
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rotation := newval - pd.lastAngle
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pd.lastAngle = newval
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pX := pd.api.getXcoord pd.pivot
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pY := pd.api.getYcoord pd.pivot
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relX: Record<string, number> := {}
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relY: Record<string, number> := {}
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for each anchor of pd.rotatable
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relX[anchor] = pd.api.getXcoord(anchor) - pX
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relY[anchor] = pd.api.getYcoord(anchor) - pY
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console.log 'Unfixing', anchor, relX[anchor], relY[anchor]
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pd.api.setFixed anchor, false
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ct := Math.cos rotation
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st := Math.sin rotation
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for each anchor of pd.rotatable
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rX := relX[anchor]*ct - relY[anchor]*st
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rY := relY[anchor]*ct + relX[anchor]*st
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pd.api.setCoords(anchor, rX + pX, rY + pY)
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if pd.fixed[anchor]
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console.log 'Re-fixing', anchor, rX, rY
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pd.api.setFixed anchor, true
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function invisible(cname: string): boolean
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if adapParams.config?.showall then return false
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cname is '0' or cname is 'none'
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@ -397,8 +470,8 @@ function joyce2rgb(cname: string, backgroundRGB?: RGB): RGB
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console.warn 'Could not parse color:', cname
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[128, 128, 128]
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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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function pointDefaultRGB(name: string, method: string, isPivot: boolean): RGB
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if isPivot then return joyce2rgb 'green'
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switch method
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'free'
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joyce2rgb 'red'
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@ -406,7 +479,14 @@ function pointDefaultRGB(name: string, method: string): RGB
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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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function geoname(
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jname: JoyceName, elements: JoyceElements, klass: JoyceClass): GeoName
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unless jname.substring(0,3) is 'Geo' // those might clash
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// Names with word characters starting with a capital are always good:
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if /^[A-Z]['\w]*$/.test jname then return jname
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// If it's not a point, can start with any letter:
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if klass !== 'point' and /^\p{L}['\w]*$/u.test jname then return jname
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// GeoGebra won't deal with this name, so hash it:
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numCode .= 0n
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numCode = numCode*128n + BigInt ch.codePointAt(0) ?? 1 for each ch of jname
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return .= 'Geo' + numCode.toString(36);
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@ -426,11 +506,12 @@ function cutoffExtend(
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// All of the detailed semantics of each available command lies in this
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// function.
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classHandler: Record<JoyceClass, ClassHandler> :=
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point: (name, method, args, index, is3d): Commander =>
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point: (name, method, args, index, cdata): Commander =>
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return := freshCommander()
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{commands, callbacks, parts, auxiliaries} := return.value
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zeroVector := is3d ? 'Vector((0,0,0))' : 'Vector((0,0))'
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zeroVector := cdata.is3d ? 'Vector((0,0,0))' : 'Vector((0,0))'
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aux := name + 'aUx'
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pivotable := cdata.pivot and name !== pivotData[cdata.pivot].pivot
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parts[0].push name
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switch method
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/angle(?:Bisector|Divider)/
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@ -445,7 +526,7 @@ classHandler: Record<JoyceClass, ClassHandler> :=
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commands.push `${destination} = Segment(${start}, ${end})`
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else destination = args.line[0]
|
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n := method is 'angleBisector' ? 2 : args.scalar?[0]
|
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inPlane := is3d ? `, Plane(${start}, ${center}, ${end})` : ''
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inPlane := cdata.is3d ? `, Plane(${start}, ${center}, ${end})` : ''
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commands.push
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`${aux}2 = Angle(${start}, ${center}, ${end}${inPlane})`
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`${aux}3 = If(${aux}2 > pi, ${aux}2 - 2*pi, ${aux}2)`
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@ -454,7 +535,12 @@ classHandler: Record<JoyceClass, ClassHandler> :=
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auxiliaries.push ...[2..4].map (i) => `${aux}${i}`
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'circleSlider'
|
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unless args.circle then return
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commands.push `${name} = Point(${args.circle[0]})`
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circ := args.circle[0]
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commands.push `${name} = Point(${circ})`
|
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if (pivotable
|
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and cdata.elements[circ].ends?[0] // center
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is pivotData[cdata.pivot].pivot)
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pivotData[cdata.pivot].rotatable.push name
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if args.scalar and args.scalar.length
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||||
callbacks.push (api: AppletObject) =>
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api.setCoords name, ...args.scalar as XYZ
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@ -466,12 +552,15 @@ classHandler: Record<JoyceClass, ClassHandler> :=
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commands.push `${name} = Translate(${source}, ${displacement})`
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'first'
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||||
unless args.subpoints then return
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commands.push `${name} = Point(${args.subpoints[0]},${zeroVector})`
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commands.push `${name} = ${args.subpoints[0]}`
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/fixed|free/
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coords := args.scalar
|
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unless coords then return
|
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commands.push `${name} = Point({${coords.join ','}})`
|
||||
scoord := coords.join ','
|
||||
if pivotable then pivotData[cdata.pivot].rotatable.push name
|
||||
commands.push `${name} = (${scoord})`
|
||||
if method is 'fixed'
|
||||
if pivotable then pivotData[cdata.pivot].fixed[name] = true
|
||||
callbacks.push (api: AppletObject) => api.setFixed name, true
|
||||
'foot'
|
||||
pt := args.subpoints
|
||||
@ -492,7 +581,7 @@ classHandler: Record<JoyceClass, ClassHandler> :=
|
||||
'last'
|
||||
unless args.subpoints then return
|
||||
commands.push
|
||||
`${name} = Point(${args.subpoints.at(-1)}, ${zeroVector})`
|
||||
`${name} = ${args.subpoints.at(-1)}`
|
||||
'lineSegmentSlider'
|
||||
segment .= args.line?[0]
|
||||
unless segment
|
||||
@ -524,7 +613,7 @@ classHandler: Record<JoyceClass, ClassHandler> :=
|
||||
unless pt.length is 5 then return
|
||||
sourcePlane .= ''
|
||||
destPlane .= ''
|
||||
if is3d
|
||||
if cdata.is3d
|
||||
unless args.plane then return
|
||||
destPlane = `, ${args.plane[0]}`
|
||||
if args.plane.length > 1
|
||||
@ -544,7 +633,7 @@ classHandler: Record<JoyceClass, ClassHandler> :=
|
||||
commands.push
|
||||
`${name} = Vertex(${args.polygon?[0]},${args.scalar?[0]})`
|
||||
|
||||
line: (name, method, args, index, is3d) =>
|
||||
line: (name, method, args, index, cdata) =>
|
||||
return := freshCommander()
|
||||
return.value.ends = ['', '']
|
||||
{commands, callbacks, parts, auxiliaries, ends} := return.value
|
||||
@ -561,7 +650,7 @@ classHandler: Record<JoyceClass, ClassHandler> :=
|
||||
unless cr return
|
||||
commands.push ...[1..2].map (n) =>
|
||||
`${aux}${n} = Intersect(${cr[0]}, ${cr[1]}, ${n})`
|
||||
inPlane := is3d ? `Plane(${cr[0]})` : ''
|
||||
inPlane := cdata.is3d ? `Plane(${cr[0]})` : ''
|
||||
ctr := cr.map (c) => `Center(${c})`
|
||||
condition := (`Angle(${aux}1,${ctr[0]},${ctr[1]}${inPlane})`
|
||||
+ `< Angle(${aux}2,${ctr[0]},${ctr[1]}${inPlane})`)
|
||||
@ -630,7 +719,8 @@ classHandler: Record<JoyceClass, ClassHandler> :=
|
||||
|
||||
circle: (name, method, args) =>
|
||||
return := freshCommander()
|
||||
{commands, callbacks, parts, auxiliaries} := return.value
|
||||
return.value.ends = ['', '']
|
||||
{commands, callbacks, parts, auxiliaries, ends} := return.value
|
||||
parts[2].push name
|
||||
parts[1].push name
|
||||
switch method
|
||||
@ -641,10 +731,12 @@ classHandler: Record<JoyceClass, ClassHandler> :=
|
||||
switch pt.length
|
||||
when 2
|
||||
[center, point] := pt
|
||||
ends[0] = center
|
||||
commands.push
|
||||
`${name} = Circle(${center}, ${point}${inPlane})`
|
||||
when 3
|
||||
center := pt[0]
|
||||
ends[0] = center
|
||||
radius := `Distance(${pt[1]}, ${pt[2]})`
|
||||
commands.push
|
||||
`${name} = Circle(${center}, ${radius}${inPlane})`
|
||||
|
Loading…
Reference in New Issue
Block a user