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meclib.js
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meclib.js
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// https://github.com/mkraska/meclib/wiki
// version info
const versionText= "JXG "+JXG.version+" Meclib 2024 09 24";
const highlightColor = "orange";
const movableLineColor = "blue";
const loadColor = "blue";
const defaultMecLayer = 6;
let pxunit = 1/40; // is reset by "grid"
let a = 16*pxunit; // is reset by "grid"
const deg2rad = Math.PI/180, rad2deg = 180/Math.PI;
const tolPointLine = 0.001;
let xscale = 1, yscale = 1; // default scale for infobox, can be modified by "grid"
let dpx = 1, dpy = 1; // default decimal precision for infobox, can be modified by "grid"
// infobox settings, further settings after board initiation
JXG.Options.infobox.layer = defaultMecLayer+5;
JXG.Options.infobox.strokeColor = 'black';
JXG.Options.infobox.cssStyle = 'background-color: #ffffffdd;'
// snap settings. Interactive objects are handled explicity
JXG.Options.point.snapToGrid = false; // grid snap spoils rotated static objects
JXG.Options.point.snapSizeX = 0.1;
JXG.Options.point.snapSizeY = 0.1;
// interactive objects are released explicitly
JXG.Options.point.fixed = true;
JXG.Options.line.fixed = true;
JXG.Options.circle.fixed = true;
// label settings
JXG.Options.text.useMathJax = true;
JXG.Options.text.parse = false;
JXG.Options.label.useMathJax = true;
JXG.Options.label.offset = [0, 0];
JXG.Options.label.anchorY = 'middle';
// suppress automatic labels
JXG.Options.point.name = "";
// highlighting is activated explicitly for interactive objects
JXG.Options.curve.highlight = false;
JXG.Options.label.highlight = false;
JXG.Options.text.highlight = false;
JXG.Options.circle.highlight = false;
JXG.Options.line.highlight = false;
JXG.Options.polygon.highlight = false;
JXG.Options.polygon.borders.highlight = false;
JXG.Options.point.highlight = false;
// grid control
JXG.Options.axis.ticks.insertTicks = false;
JXG.Options.grid.drawZero = true;
// Styles
const [nodeStyle, pointStyle, silentPStyle, controlSnapStyle, barStyle, normalStyle, thinStyle, hatchStyle] = [
// nodes (hinges)
{ fillcolor: 'white', strokeColor: 'black', size: 2, strokeWidth: 1.5 },
// points (black dots)
{ fillcolor: 'black', strokeColor: 'black', size: 1, strokeWidth: 1 },
// invisible points with infobox
{ size: 0, withLabel: false },
// grid snap for control points
{ snapToGrid: true, snapToPoints: true, attractorDistance: 0.2, fixed: false, layer: 11 },
// Style for bars
{ strokewidth: 4, strokecolor: "black" },
// Normal line (body outline)
{ strokeWidth: 2, strokeColor: 'black', lineCap: 'round' },
// helper line
{ strokeWidth: 1, strokeColor: 'black', lineCap: 'round' },
// hatch style, must be a function because depending on pxunit
() => ({ fixed: true, width: 5 * pxunit, frequency: 5 * pxunit, angle: 45 * deg2rad, layer: 8, strokeColor: 'black' })
];
const board = JXG.JSXGraph.initBoard(divid, {
boundingbox: [-5, 5, 5, -5], //default values, use "grid" to customize
axis: false, grid:true, showNavigation:false, showCopyright:false,
keepAspectRatio:false, resize: {enabled: false, throttle: 200},
pan: {enabled:false}, //suppress uninteded pan on touchscreens
keyboard:{enabled:false} //would spoil textinput in momentGen and forceGen
});
let state;
let stateInput;
// make infobox optionally relative to a given point (define p.ref to [xref, yref])
board.infobox.distanceY = 20;
//board.infobox.setAttribute({highlight:false});
board.highlightInfobox = function(x, y , el) {
let ref = [0,0];
let scale = [xscale,yscale];
let dp = [dpx,dpy];
let lbl = '';
if (typeof (el.ref) == 'function') {ref = el.ref()}
else if (typeof(el.ref) != 'undefined') {ref = el.ref}
if (typeof (el.scale) != 'undefined') {scale = el.scale}
if (typeof (el.dp) != 'undefined') {dp = el.dp}
if (typeof (el.infoboxlabel) == 'string') {lbl = el.infoboxlabel}
this.infobox.setText(
lbl+'('+((parseFloat(x)-ref[0])*scale[0]).toFixed(dp[0]) + ', ' + ((parseFloat(y)-ref[1])*scale[1]).toFixed(dp[1])+ ')')
};
// angular dimension with a single or double arrow (handles arrow, arrow1 and arrow2)
class angle {
constructor(data) {
this.d = data.slice(0); //copy
// base line
this.p1 = board.create('point', data[2], {size:3, name:'p1', fixed:false, visible:false});
this.p3 = board.create('point', data[3], {size:3, name:'p3', fixed:false, visible:false});
this.c2 = board.create('circle', [this.p1, this.p3], {opacity:0.5, visible:false});
this.l1 = board.create('segment', [this.p1, this.p3], {withlabel:false, ...thinStyle});
// second line
const a0 = this.l1.getAngle();
console.log('here is a0:' + a0);
const le = this.l1.L();
const a1 = a0+data[5]*deg2rad;
this.ln = board.create('line', [this.p1, plus(XY(this.p1), rect(le,a1))], {withlabel:false, ...thinStyle, straightFirst:true, visible:false});
this.in2 = board.create('intersection', [this.ln, this.c2], {visible:false});
this.p2 = board.create('glider', [this.in2.X(), this.in2.Y(), this.c2], {fixed:false, name:'p2', visible:false});
this.l2 = board.create('segment', [this.p1, this.p2], {withlabel:false, ...thinStyle});
// arc with arrows
this.p4 = board.create('point', plus( XY(this.p1), rect(data[4],a0) ), {visible:false, name:'p4'});
this.c1 = board.create('circle', [this.p1, this.p4], {opacity:0.5, visible:false});
this.int1 = board.create('intersection', [this.c1, this.l1], {name:'int1', visible:false});
this.int2 = board.create('intersection', [this.c1, this.l2], {name:'int2', visible:false});
if (data[0] == "angle" ) {
this.arc = board.create('minorArc', [this.p1, this.int1, this.int2],
{ ...thinStyle } ) }
if (data[0] == "angle1" ) {
this.arc = board.create('minorArc', [this.p1, this.int1, this.int2],
{ ...thinStyle, lastArrow:{type: 1, size: 6}})}
if (data[0] == "angle2" ) {
this.arc = board.create('minorArc', [this.p1, this.int1, this.int2],
{ ...thinStyle, firstArrow:{type: 1, size: 6},lastArrow:{type: 1, size: 6}})}
// label
this.mp = board.create('midpoint', [this.int1, this.int2], {visible:false, name:'mp'});
this.bis = board.create('line', [this.mp, this.p1], {visible:false}); //bisector
const al = (a0+a1)/2; // angular position of label
if (data[1] == ".") {
const rl = data[4]*0.6;
this.pr = board.create('point', plus(XY(this.p1), rect(rl,al)), {visible:false, name:'pr'});
this.cl = board.create('circle', [this.p1, this.pr], {strokeColor:'red', opacity:0.5, visible:false} );
this.p5 = board.create('intersection', [this.bis, this.cl, 1], { name:"" , showInfobox:false, fillcolor:'black',strokeColor:'black',size:0.5, strokeWidth:0});
}
else {
const rl = data[4]+10*pxunit;
this.pr = board.create('point', plus(XY(this.p1), rect(rl,al)), {visible:false, name:'pr'});
this.cl = board.create('circle', [this.p1, this.pr], {strokeColor:'red', opacity:0.5, visible:false} );
this.p5 = board.create('intersection', [this.bis, this.cl, 1], {name:toTEX(data[1]), showInfobox:false, size:0});
}
// Enable object animation
this.p0 = board.create('point', [0,0], {fixed:true, visible:false, name:'p0'});
const diffX = this.p1.X() - this.p0.X();
const diffY = this.p1.Y() - this.p0.Y();
const t1 = board.create('transform', [() => this.p1.X() - diffX, () => this.p1.Y() - diffY], {type: 'translate'});
t1.bindTo([this.in2, this.p3, this.p4, this.pr]);
}
data() {return this.d}
name() {return '"'+this.d[1]+'"'}
}
// Fachwerkstab
class bar {
constructor(data) {
this.state = (typeof data[data.length-1] == 'string') ? data.pop() : "SHOW";
this.d = data.slice(0);
// line
this.p1 = board.create('point',data[2],{withlabel:false, ...nodeStyle, fixed:true});
this.p2 = board.create('point',data[3],{withlabel:false, ...nodeStyle, fixed:true});
this.l = board.create('line', [this.p1, this.p2], {visible:false});
this.mp = board.create('midpoint', [this.p1, this.p2], {name:'mp', visible:false});
this.line = board.create('segment', [this.p1, this.p2], {withlabel:false, ...barStyle});
targets.push(this.line);
// label
const alpha = this.line.getAngle()+90*deg2rad;
this.lp = board.create('point', plus( mult( 0.5, plus( XY(this.p1), XY(this.p2) ) ), rect(11*pxunit, alpha)), {visible:false});
const r = Math.sqrt((this.lp.X()-this.mp.X())**2 + (this.lp.Y()-this.mp.Y())**2);
this.perpl = board.create('perpendicular', [this.mp, this.l], {visible:false});
this.lc = board.create('circle', [this.mp, r], {visible:false});
this.int1 = board.create('intersection', [this.perpl, this.lc], {name:'int1', visible:false});
this.int2 = board.create('otherintersection', [this.perpl, this.lc, this.int1], {visible:false});
let x = () => this.int2.X(), y = () => this.int2.Y();
this.label = board.create('text', [x, y, data[1]], {anchorX:'middle', anchorY:'middle'});
// implement state switching
this.obj = [this.p1, this.p2, this.line, this.label];
switch (this.state) {
case 'show': show(this); makeSwitchable(this.line, this); break;
case 'hide': hide(this); makeSwitchable(this.line, this); break;
case 'SHOW': SHOW(this); break;
case 'HIDE': HIDE(this); break;
}
// state init
this.loads = [];
}
hasPoint(pt) {
return isOn(pt,this.line) && JXG.Math.Geometry.distPointLine([1,pt.X(),pt.Y()], this.line.stdform) < tolPointLine}
data(){ let a = this.d.slice(0); a.push(this.state); return a}
name(){ return targetName(this) }
}
// Rectangle with centerline given by pair of points. Even number of points generates multiple rectangles which are merged if they overlap.
// [ "beam", "color", [x1,y1], [x2,y2] ..., radius, state ]
class beam {
constructor(data){
this.state = (typeof data[data.length-1] == 'string') ? data.pop() : "SHOW";
this.d = data.slice(0); //make a copy
this.r = data.pop(); // radius
data.shift(); // drop the type string
if (typeof data[1] === 'string') {
this.col = [data.shift(),data.shift()]; //droping the attributes for fillcolor and gradientcolor into an array
} else {
this.col = [ 'lightgrey', 'lightgrey']; data.shift(); // drop the name and use default uniform color
}
this.p = data; // end points of center line
// loop over pairs of points
this.angle = -Math.atan2(this.p[1][1]-this.p[0][1],this.p[1][0]-this.p[0][0])+90*deg2rad;
this.attr = {opacity: true, layer:defaultMecLayer, fillcolor:this.col[0],
gradient:'linear', gradientSecondColor:this.col[1], gradientAngle:this.angle, hasInnerPoints:true,
...normalStyle};
this.b = board.create('curve', [[],[]], {...normalStyle, hasInnerPoints:true});
let beams = [], beamUnions = [];
let x, y, dx, dy, l , c;
console.log('this.p.length is here: ' + this.p.length);
// variable names plays a big role, has to be different in every iteration to prevent overriding
// previous problem with only 1 beam appearing is due to overwriting of variables
// need to use IIFE
// Initialize arrays to store function values
let xArray = [], yArray = [], dxArray = [], dyArray = [], lArray = [], cArray = [];
for (let i = 0; i < this.p.length; i+=2) {
(function () {
let pointName1 = `p${i+1}`, pointName2 = `p${i+2}`, beamName1 = `b${i+1}`;
this[pointName1] = board.create('point', this.p[i], {visible:false, fixed:true, name:pointName1});
this[pointName2] = board.create('point', this.p[i+1], {visible:false, fixed:true, name:pointName2});
// Store the function values in arrays
xArray[i] = () => this[pointName1].X();
yArray[i] = () => this[pointName1].Y();
dxArray[i] = () => this[pointName2].X() - this[pointName1].X();
dyArray[i] = () => this[pointName2].Y() - this[pointName1].Y();
lArray[i] = () => Math.sqrt(dxArray[i]()**2 + dyArray[i]()**2);
cArray[i] = () => this.r/lArray[i]();
let bneu = board.create('curve', [[],[]], {strokeWidth:0, hasInnerPoints:true});
bneu.updateDataArray = function () {
this.dataX = [xArray[i]()+dyArray[i]()*cArray[i](), xArray[i]()+dxArray[i]()+dyArray[i]()*cArray[i](), xArray[i]()+dxArray[i]()-dyArray[i]()*cArray[i](),
xArray[i]()-dyArray[i]()*cArray[i](), xArray[i]()+dyArray[i]()*cArray[i]()];
this.dataY = [yArray[i]()-dxArray[i]()*cArray[i](), yArray[i]()+dyArray[i]()-dxArray[i]()*cArray[i](), yArray[i]()+dyArray[i]()+dxArray[i]()*cArray[i](),
yArray[i]()+dxArray[i]()*cArray[i](), yArray[i]()-dxArray[i]()*cArray[i]()];}
beams.push(bneu);
}).call(this);
}
if (this.p.length === 2) {
this.b = beams[0];
this.b.setAttribute(this.attr);
} else if (this.p.length === 4) {
this.b = board.create('curveunion', [beams[0], beams[1]], this.attr);
} else {
for (let i = 0; i < beams.length; i += 2) {
if (i + 1 < beams.length) {
let newBeamUnion = board.create('curveunion', [beams[i], beams[i + 1]], this.attr);
beamUnions.push(newBeamUnion);
} else {beamUnions.push(beams[i]);} // If there's an odd number of beams, add the last beam as is
}
// Combine the curve unions if there are more than one
this.b = board.create('curveunion', beamUnions, this.attr);
}
this.b.rendNode.setAttributeNS(null, 'fill-rule', 'evenodd'); //Workaround for correct fill, see https://github.com/jsxgraph/jsxgraph/issues/362
// group points
this.b.obj = [this.b];
this.b.parent = this;
//const pointgroup = board.create('group', pointsArray);
//const pointgroup = board.create('group', pointsArray).setRotationCenter('centroid').setRotationPoints(pointsArray);
// implement state switching
this.obj = [this.b];
// state init
switch (this.state) {
case 'show': show(this); makeSwitchable(this.b, this); break;
case 'hide': hide(this); makeSwitchable(this.b, this); break;
case 'SHOW': SHOW(this); break;
case 'HIDE': HIDE(this); break;
}
this.loads = [];
}
hasPoint(pt) {return isOn(pt,this.b)}
data(){ let a = this.d.slice(0); a.push(this.state); return a}
name(){ return targetName(this) }
}
// Circle with centerpoint, point on perimeter, optional: use name as radius indicator
// [ "circle", "name", [xc, yc], [xp,yp] , angle]
// [ "circle", "name", [xc, yc], radius , angle]
class circle {
constructor(data){
this.d = data.slice(0); //make a copy
this.state = data[5] ?? "SHOW";
this.angle = data[4] ? data[4] * deg2rad : 0; // pop the angle for the label
this.p1 = board.create('point', data[2], {visible:true, size:0});
// specify circle radius - check if data[3] is an array of coordinates or radius from midpoint
const theta = Math.atan2(this.p1.Y(),this.p1.X());
if (typeof(data[3]) == 'number') {this.p2 = board.create('point', [this.p1.X() + data[3] * Math.cos(theta), this.p1.Y() + data[3] * Math.sin(theta)], {visible:false})}
else {this.p2 = board.create('point', data[3], {visible:false});}
// circle
this.c = board.create('circle', [this.p1,this.p2], {opacity: true, fillcolor:'lightgray', hasInnerPoints:true, strokeWidth: normalStyle.strokeWidth, strokeColor: normalStyle.strokeColor});
this.obj = [this.c];
this.p0 = board.create('point', [0,0], {fixed:true, visible:false});
const diffX = this.p1.X() - this.p0.X();
const diffY = this.p1.Y() - this.p0.Y();
const t1 = board.create('transform', [() => this.p1.X() - diffX, () => this.p1.Y() - diffY], {type: 'translate'});
// arrow and label if name is not empty or does not contain whitespaces
if (data[1].trim() !== "") {
let dir = 1;
if (this.angle < 0) {dir = -1}
const r = this.c.Radius();
// console.log(dir);
this.p3 = board.create('point',plus(XY(this.p1), rect(r+dir*16*pxunit, this.angle)), {visible:false} );
this.p4 = board.create('point',plus(XY(this.p1), rect(r, this.angle)), {visible:false} );
this.a = board.create('arrow', [this.p3, this.p4], thinStyle);
// label
this.p = board.create('point', plus( XY(this.p1), rect(r+dir*24*pxunit, this.angle)),
{name:toTEX(data[1]), ...centeredLabelStyle});
this.obj.push( this.a, this.p.label );
t1.bindTo([this.p2, this.p3, this.p4, this.a, this.c, this.p]);
} else {
t1.bindTo([this.p2, this.c]);
}
// state init
switch (this.state) {
case 'show': show(this); makeSwitchable(this.c, this); break;
case 'hide': hide(this); makeSwitchable(this.c, this); break;
case 'SHOW': SHOW(this); break;
case 'HIDE': HIDE(this); break;
}
this.loads = []
}
hasPoint(pt) {return isOn(pt,this.c)}
data(){ return ["circle", this.d[1], XY(this.p1), this.c.Radius(), this.angle/deg2rad, this.state]}
name(){ return targetName(this) }
}
//[ "circle2P", "<label1>","<label2>", [x1,y1],[x2,y2], f ]//
class circle2p {
constructor(data){
this.d = data.slice(0); //make a copy
if (this.data[5]) {this.f = data[5]}
else {this.f = xscale};
const lStyle = {fixed:false, strokeColor:movableLineColor, highlightStrokeColor:highlightColor, highlight:true};
const iStyle = { visible: true, size: 0 , label:{visible:false} };
// x-axis for intersection points
this.xaxis = board.create('line', [ [0, 0], [1, 0] ], { visible: false });
// circle
this.A = board.create('point', mult( 1/this.f, data[3] ), {
name: data[1], ...controlSnapStyle, snapToPoints:false,label:{offset:[5,5]}});
this.AS = board.create('point', mult( 1/this.f, data[4] ), {
name: data[2], ...controlSnapStyle, snapToPoints:false,label:{offset:[5,5]} });
this.MSK1 = board.create('semicircle', [this.A, this.AS], lStyle );
this.MSK2 = board.create('semicircle', [this.AS, this.A], lStyle );
// the intersection signature has changed between 1.2.1 and 1.4.4
if (isNewerVersion ('1.2.1', JXG.version)) {
this.int1 = board.create('intersection', [this.MSK1, this.xaxis,0], iStyle );
this.int2 = board.create('intersection', [this.MSK2, this.xaxis,1], iStyle );
} else {
this.int1 = board.create('intersection', [this.MSK1, this.xaxis], iStyle );
this.int2 = board.create('intersection', [this.MSK2, this.xaxis], iStyle );
}
for (let pt of [this.A, this.AS, this.int1, this.int2]) {
pt.scale = [this.f,this.f] }
this.A.on("up", update );
this.AS.on("up", update );
}
data(){
return [this.d[0], this.d[1], this.d[2],
mult( this.f, XY(this.A) ), mult( this.f, XY(this.AS) ), this.f] }
name(){ return "[["+this.data()[3].toString() + "],[" + this.data()[4].toString() + "]]" }
}
// crosshair for reading off co-ordinates from graphs
// [ "crosshair", "", [x0, y0], [xref, yref], [xscale, yscale], [dpx, dpy] ]
class crosshair {
constructor(data) {
this.d = data;
const f = 2, r = 7;
this.p = board.create('point', data[2], {
name: '',
fixed: false,
size: r,
fillOpacity: 0,
highlightFillOpacity: 0,
strokeWidth: 1,
color: movableLineColor,
snapToGrid: false,
attractors: targets,
attractorDistance: 0.2
});
// set properties of infobox
if (data[3]) { this.p.ref = data[3] } else {this.p.ref = [0,0]}
if (data[4]) { this.p.scale = data[4] } else {this.p.scale = [1,1]}
if (data[5]) { this.p.dp = data[5] }
// cross
const that = this;
this.v = board.create('curve', [ [],[] ], { strokeWidth: 1, strokeColor: movableLineColor });
this.v.updateDataArray = function() {
this.dataX = [that.p.X() - f * r * pxunit, that.p.X() + f * r * pxunit, NaN, that.p.X(), that.p.X()];
this.dataY = [that.p.Y(), that.p.Y(), NaN, that.p.Y() - f * r * pxunit, that.p.Y() + f * r * pxunit]
};
this.v.fullUpdate();
// this doesn't work in JSXGraph version 1.2.1
//this.p1 = board.create('point', [ ()=>that.p.X(), ()=>that.p.Y() ),
// {size:2*r, face: 'plus',strokeWidth:1 , strokeColor: movableLineColor });
this.p.on("up", update);
}
data() {
let d = this.d;
d[2] = XY(this.p);
return d
}
name() {
return "[" +
((this.p.X() - this.p.ref[0]) * this.p.scale[0]).toString() + "," +
((this.p.Y() - this.p.ref[1]) * this.p.scale[1]).toString() +"]"
}
}
// damper
// [ "dashpot", "name", [x1,y1], [x2,y2], r, offset ]
class dashpot {
constructor(data){
// Parameter handling
this.state = (typeof data[data.length-1] == 'string') ? data.pop() : "SHOW";
this.d = data.slice(0); //make a copy
this.p1 = board.create('point', this.d[2], {name:'p1', fixed:true, visible:false});
this.p2 = board.create('point', this.d[3], {name:'p2', fixed:true, visible:false});
let x = () => this.p1.X(), y = () => this.p1.Y();
let dx = () => (this.p2.X()-x()), dy = () => (this.p2.Y()-y());
let l = () => Math.sqrt(dx()**2+dy()**2);
if (data.length >4 ) {this.r = data[4]} else {this.r = 6*pxunit}
if (data.length >5 ) {this.off = data[5]} else {this.off = (this.r)+10*pxunit} // check data[7]
let c = () => this.r/l();
let xc = () => x()+0.5*dx(), yc = () => y()+0.5*dy();
let dlx = () => c()*dx(), dly = () => c()*dy(), dqx = () => -c()*dy(), dqy = () => c()*dx();
this.c = board.create('curve',[[0],[0]], {hasInnerPoints:true, ...normalStyle} );
this.c.updateDataArray = function() {
this.dataX = [x(), xc(), NaN, xc()+dqx(), xc()-dqx(), NaN,
xc()+dqx()-dlx(), xc()+dqx()+dlx(), xc()-dqx()+dlx(), xc()-dqx()-dlx(), NaN,
xc()+dlx(), x()+dx()];
this.dataY = [y(), yc(), NaN, yc()+dqy(), yc()-dqy(), NaN,
yc()+dqy()-dly(), yc()+dqy()+dly(), yc()-dqy()+dly(), yc()-dqy()-dly(), NaN,
yc()+dly(), y()+dy()];
};
// snap points
this.s = board.create('segment', [this.p1,this.p2],{strokeWidth:0});
targets.push(this.s);
// label
let labelX = () => xc()-dy()/l()*this.off, labelY = () => yc()+dx()/l()*this.off;
this.l = board.create('point',[labelX,labelY], {name:toTEX(data[1]), ...centeredLabelStyle});
// logging
console.log("dasphot", data[1], data[2], data[3], this.r, this.off);
// implement state switching
this.obj = [ this.c, this.l.label ];
// state init
switch (this.state) {
case 'show': show(this); makeSwitchable(this.c, this); break;
case 'hide': hide(this); makeSwitchable(this.c, this); break;
case 'SHOW': SHOW(this); break;
case 'HIDE': HIDE(this); break;
}
this.loads = []
}
data(){ let a = this.d.slice(0); a.push(this.state); return a}
name(){ return targetName(this) }
hasPoint(pt) {return (isOn(pt,this.s) || isOn(pt,this.p1)) &&
JXG.Math.Geometry.distPointLine(
[1,pt.X(),pt.Y()], this.s.stdform) < tolPointLine}
}
// linear dimension ["dim", "name", [x1,y1], [x2,y2], d]
class dim {
constructor(data) {
this.d = data;
const d = data[4];
const vd = minus(data[3], data[2]);
const [le, a0] = polar(vd);
const vn = rect(1, a0+90*deg2rad); // ao is used here
const vmult = mult(d, vn);
this.p01 = board.create('point', [data[2][0] + vmult[0], data[2][1] + vmult[1]], {fixed:true, visible:false, name:'p01'});
this.p02 = board.create('point', [data[2][0] + vmult[0] + vd[0], data[2][1] + vmult[1] + vd[1]], {fixed:false, visible:false, name:'p02'});
this.mp1 = board.create('midpoint', [this.p01, this.p02], {name:'mp1', visible:false});
// p01, p02 are the initial points, p1 and p2 are based on these 2 points, in turn, pv1 and pv2 are based on p1 and p2
let p01x = this.p01.X(), p01y = this.p01.Y(), p02x = this.p02.X(), p02y = this.p02.Y();
// perpendicular lines
let da = 5*pxunit;
let di = da;
if (d !=0 ) {di=d}
if (d<0) {di=d;da=-da}
let negdivn = mult(-di,vn), posdavn = mult(da, vn);
this.p1 = board.create('point', [p01x + negdivn[0], p01y + negdivn[1]], {visible:false, name:'p1', fixed:false});
this.p2 = board.create('point', [p02x + negdivn[0], p02y + negdivn[1]], {visible:false, name:'p2', fixed:false});
this.l = board.create('line', [this.p1, this.p2], {visible:false});
let p1x = () => this.p1.X(), p1y = () => this.p1.Y(), p2x = () => this.p2.X(), p2y = () => this.p2.Y();
this.perpl1 = board.create('perpendicular', [this.l, this.p1], {visible:false});
this.perpl2 = board.create('perpendicular', [this.l, this.p2], {visible:false});
const vd1 = minus(XY(this.p2), XY(this.p1));
const [le1, a01] = polar(vd1);
const vn1 = rect(1, a01+90*deg2rad); // ao is used here
const vmult1 = mult( d, vn1 );
// perpendicular lines
this.p3 = board.create('point', [p01x + posdavn[0], p01y + posdavn[1]], {visible:false, name:'p3', fixed:false});
this.p4 = board.create('point', [p02x + posdavn[0], p02y + posdavn[1]], {visible:false, name:'p4', fixed:false});
this.hl1 = board.create('segment', [this.p1, this.p3], {visible:false});
this.hl2 = board.create('segment', [this.p2, this.p4], {visible:false});
this.pv1 = board.create('glider', [p01x, p01y, this.hl1], {fixed:true, visible:false, name:'pv1'});
this.pv2 = board.create('glider', [p02x, p02y, this.hl2], {fixed:true, visible:false, name:'pv2'});
let pv1x = () => this.pv1.X(), pv1y = () => this.pv1.Y(), pv2x = () => this.pv2.X(), pv2y = () => this.pv2.Y();
this.l2 = board.create('line', [this.pv1, this.pv2], {visible:false});
let dx = pv1x() - p1x(), dy = pv1y() - p1y();
let dist = Math.sqrt(dx*dx + dy*dy);
// use circles to maintain constant offset
let circle1 = board.create('circle', [this.p1, dist], {visible:false});
this.int3 = board.create('intersection', [circle1, this.perpl1], {name:'int3', visible:false});
this.int4 = board.create('otherintersection', [circle1, this.perpl1, this.int3], {name:'int4', visible:false});
let circle2 = board.create('circle', [this.p2, dist], {visible:false});
this.int5 = board.create('intersection', [circle2, this.perpl2], {name:'int5', visible:false});
this.int6 = board.create('otherintersection', [circle2, this.perpl2, this.int5], {name:'int6', visible:false});
let circle3 = board.create('circle', [this.p1, this.p3], {visible:false});
this.int7 = board.create('intersection', [circle3, this.perpl1], {name:'int7', visible:false});
this.int8 = board.create('otherintersection', [circle3, this.perpl1, this.int7], {name:'int8', visible:false});
let circle4 = board.create('circle', [this.p2, this.p4], {visible:false});
this.int9 = board.create('intersection', [circle4, this.perpl2], {name:'int9', visible:false});
this.int10 = board.create('otherintersection', [circle4, this.perpl2, this.int9], {name:'int10', visible:false});
if (d >= 0) {
this.hl3 = board.create('segment', [this.p1, this.int8], {name:'', ...thinStyle});
this.hl4 = board.create('segment', [this.p2, this.int10], {name:'', ...thinStyle});
// midpoint used in label positioning
this.mp0 = board.create('midpoint', [this.int4, this.int6], {name:'mp0', visible:false});
// baseline
this.bl = board.create('arrow', [this.int4, this.int6],{name:'', ...thinStyle, firstArrow:{type:1,size:6}, lastArrow:{type:1,size:6}});}
else {
this.hl3 = board.create('segment', [this.p1, this.int7], {name:'', ...thinStyle});
this.hl4 = board.create('segment', [this.p2, this.int9], {name:'', ...thinStyle});
// midpoint used in label positioning
this.mp0 = board.create('midpoint', [this.int3, this.int5], {name:'mp0', visible:false});
// baseline
this.bl = board.create('arrow', [this.int3, this.int5],{name:'', ...thinStyle, firstArrow:{type:1,size:6}, lastArrow:{type:1,size:6}});
}
this.gp1 = board.create('group', [this.p1, this.p3]).setTranslationPoints(this.p1);
this.gp2 = board.create('group', [this.p2, this.p4]).setTranslationPoints(this.p2);
// label
const vd2 = minus(XY(this.pv2), XY(this.pv1));
const [le2, a02] = polar(vd2);
const vn2 = rect( 1, a02+90*deg2rad );
const lmult = mult(8*pxunit, vn2);
let lcoords = plus(XY(this.mp0), lmult);
this.pl = board.create('point', lcoords, {name:'pl', visible:false});
this.perpl3 = board.create('perpendicular', [this.bl, this.mp0], {visible:false});
let circle5 = board.create('circle', [this.mp0, this.pl], {visible:false});
this.int11 = board.create('intersection', [circle5, this.perpl3], {name:'int11', visible:false});
this.int12 = board.create('otherintersection', [circle5, this.perpl3, this.int11], {name:toTEX(data[1]), ...centeredLabelStyle});
const tp03 = board.create('point', [0,0], {size:0, visible:false});
const diffX1 = this.mp0.X() - tp03.X();
const diffY1 = this.mp0.Y() - tp03.Y();
let t1 = board.create('transform', [() => (this.mp0.X()-diffX1), () => (this.mp0.Y()-diffY1)], {type:'translate'});
t1.bindTo(this.pl);
}
data() { return this.d }
name() { return '"'+this.d[1]+'"' }
}
// co-ordinate arrow with arrow with label
// ["dir", "name", [x1,y1], angle]
// ["dir", "name", [x1,y1], angle, offset]
// ["dir", "name", [x1,y1], angle, offset, length]
class dir {
constructor(data) {
this.label = data[1];
this.d = data;
let le = 24*pxunit;
this.dist = data[4] || 10;
data[5] && (le = data[5]);
this.dist >= 0 ? (this.name1 = "", this.name2 = toTEX(data[1])) : (this.name2 = "", this.name1 = toTEX(data[1]));
// Arrow
const off = data[3];
const v = rect( le, data[3]*deg2rad );
const pAttr = {fixed:true, size: 0, showInfobox:false, label:{offset:[0,this.dist], autoPosition:true}};
this.p1 = board.create('point', data[2], {name: this.name1, ...pAttr});
this.p2 = board.create('point', plus(data[2], v), {name: this.name2, ...pAttr});
this.vec = board.create('arrow', [this.p1, this.p2], {lastArrow: { type: 1, size: 6 }, ...thinStyle });
}
data() { return this.d }
name() { return '"'+this.d[1]+'"' }
}
//co-ordinate arrow with red arrow with label
// [ "disp", "name", [x,y], angle, offset, length]
class disp {
constructor(data) {
this.label = data[1];
this.d = data;
let le = 24*pxunit;
this.dist = data[4] || 10;
data[5] && (le = data[5]);
this.dist >= 0 ? (this.name1 = "", this.name2 = toTEX(data[1])) : (this.name2 = "", this.name1 = toTEX(data[1]));
// Arrow
const off = data[4];
const v = rect( le, data[3]*deg2rad );
this.p1 = board.create('point', data[2], {name: this.name1, fixed:true, size:0, showInfobox:false, label:{offset:[0,this.dist], autoPosition:true, color:"red"}});
this.p2 = board.create('point', plus(data[2], v), {name: this.name2, fixed:true, size:0, showInfobox:false, label:{offset:[0,this.dist], autoPosition:true, color:"red"}});
this.vec = board.create('arrow', [this.p1, this.p2], {lastArrow: { type: 1, size: 6 }, ...thinStyle, strokeColor:"red" });
}
data() { return this.d }
name() { return '"'+this.d[1]+'"' }
}
// Loslager
class fix1 {
constructor(data) {
this.state = (typeof data[data.length-1] == 'string') ? data.pop() : "SHOW";
this.d = data.slice(0);
// base points
const coords = [
[0, 0],
[-a / 2, -0.8*a],
[+a / 2, -0.8*a],
[ - 0.8 * a, -0.8*a],
[ + 0.8 * a, -0.8*a],
[ - 0.8 * a, - 1*a],
[ + 0.8 * a, - 1*a],
[ 0, - 1.9*a] //label
];
let p = [], c;
for (c of coords) { p.push(board.create('point', c, {visible: false})); }
const t1 = board.create('transform', [data[3]*deg2rad], {type:'rotate'});
const t2 = board.create('transform', data[2], {type:'translate'});
t1.applyOnce(p);
t2.applyOnce(p);
// dependent objects
// pivot
const pointConfigs = {fixed: true, visible: false};
const points = p.map((coord, index) => board.create('point', XY(coord), index === 0 ?
{name: '', ...nodeStyle} : pointConfigs));
[this.p1, this.p2, this.p3, this.p4, this.p5, this.p6, this.p7, this.p8] = points;
// label
this.label = board.create('point', XY(this.p8), {name:toTEX(data[1]), ...centeredLabelStyle });
// body
this.t = board.create('polygon', [this.p1, this.p2, this.p3], {name: '',fillColor: "white", Opacity: true, layer: 7,
borders: {...normalStyle, layer:8}, vertices: {fixed:true, size:0}});
// baseline with hatch
this.bl = board.create('segment', [this.p6,this.p7], {name: '', ...normalStyle});
this.c = board.create("comb", [this.p7,this.p6], hatchStyle() );
// Enable object animation
this.p0 = board.create('point', [0,0], {fixed:true, visible:false});
const diffX = this.p1.X() - this.p0.X(), diffY = this.p1.Y() - this.p0.Y();
const t3 = board.create('transform', [() => this.p1.X() - diffX, () => this.p1.Y() - diffY], {type:'translate'});
t3.bindTo([this.p2, this.p3, this.p4, this.p5, this.p6, this.p7, this.p8, this.label, this.t, this.bl]);
// implement state switching
this.obj = [ this.p1, this.t, this.bl, this.c, this.label, this.label.label ];
this.obj = this.obj.concat(this.t.borders);
// state init
switch (this.state) {
case 'show': show(this); makeSwitchable(this.c, this); makeSwitchable(this.t, this); break;
case 'hide': hide(this); makeSwitchable(this.c, this); makeSwitchable(this.t, this); break;
case 'SHOW': SHOW(this); break;
case 'HIDE': HIDE(this); break;
}
// proximity
this.loads = []
}
data(){ let a = this.d.slice(0); a.push(this.state); return a}
name(){ return targetName(this) }
hasPoint(pt) {return isOn(pt,this.p1)}
}
// Festlager
// [ "fix12", "name", [x, y], angle, state ]
class fix12 {
constructor(data) {
this.state = (typeof data[data.length-1] == 'string') ? data.pop() : "SHOW";
this.d = data.slice(0);
// base points
const coords = [
[0, 0],
[-a / 2, -a],
[+a / 2, -a],
[ - 0.8 * a, - a],
[ + 0.8 * a, - a],
[ 0, - 1.9*a] // label
];
let p = [], c;
for (c of coords) {p.push(board.create('point', c, {visible: false}));}
const t1 = board.create('transform', [data[3]*deg2rad], {type:'rotate'});
const t2 = board.create('transform', data[2], {type:'translate'});
t1.applyOnce(p);
t2.applyOnce(p);
// dependent objects
// pivot
const pointConfigs = {fixed: true, visible: false};
const points = p.map((coord, index) => board.create('point', XY(coord), index === 0 ?
{name: '', ...nodeStyle} : pointConfigs));
[this.p1, this.p2, this.p3, this.p4, this.p5, this.p6] = points;
this.label = board.create('point', XY(this.p6), {name:toTEX(data[1]), ...centeredLabelStyle});
// body
this.t = board.create('polygon', [this.p1, this.p2, this.p3], {name:'',fillColor:"white", Opacity:true, layer:7,
borders:{...normalStyle, layer:8}, vertices: {fixed:true, size:0}});
// baseline with hatch
this.bl = board.create('segment', [this.p4, this.p5], {name: '',...normalStyle});
this.c = board.create("comb", [this.p5, this.p4], hatchStyle() )
// Enable object animation
this.p0 = board.create('point', [0,0], {fixed:true, visible:false});
const diffX = this.p1.X() - this.p0.X(), diffY = this.p1.Y() - this.p0.Y();
const t3 = board.create('transform', [() => this.p1.X() - diffX, () => this.p1.Y() - diffY], {type:'translate'});
t3.bindTo([this.p2, this.p3, this.p4, this.p5, this.p6, this.label, this.t, this.bl]);
// implement state switching
this.obj = [this.p1, this.t, this.bl, this.c, this.label, this.label.label];
this.obj = this.obj.concat(this.t.borders);
// state init
switch (this.state) {
case 'show': show(this); makeSwitchable(this.c, this); makeSwitchable(this.t, this); break;
case 'hide': hide(this); makeSwitchable(this.c, this); makeSwitchable(this.t, this); break;
case 'SHOW': SHOW(this); break;
case 'HIDE': HIDE(this); break;
}
// proximity
this.loads = []
}
data(){ let a = this.d.slice(0); a.push(this.state); return a}
name(){ return targetName(this) }
hasPoint(pt) {return isOn(pt,this.p1)}
}
// Einspannung
// [ "fix123", "name", [x, y], angle, state ] angle = 0, object faces right
class fix123 {
constructor(data) {
this.state = (typeof data[data.length-1] == 'string') ? data.pop() : "SHOW";
this.d = data.slice(0);
// base points
const coords = [
[0,0], // base point
[0, -0.8*a], // p
[0, +0.8*a], // p
[-0.9*a,0] // label
];
let p = [], c;
for (c of coords) { p.push(board.create('point', c, {visible:false}));}
const t1 = board.create('transform', [data[3]*deg2rad], {type:'rotate'});
const t2 = board.create('transform', data[2], {type:'translate'});
t1.applyOnce(p);
t2.applyOnce(p);
// dependent objects
// base point
const pointConfigs = {fixed:true, visible:false};
const points = p.map((coord, index) => board.create('point', XY(coord), index === 0 ?
{name: '', ...silentPStyle} : pointConfigs));
[this.p1, this.p2, this.p3, this.p4] = points;
// label
this.label = board.create('point', XY(this.p4), {name:toTEX(data[1]), ...centeredLabelStyle});
// baseline with hatch
this.bl = board.create('segment', [this.p2,this.p3], {name: '',...normalStyle});
this.c = board.create("comb", [this.p3, this.p2], { ...hatchStyle(), angle:-45*deg2rad})
// Enable object animation
this.p0 = board.create('point', [0,0], {fixed:true, visible:false});
const diffX = this.p1.X() - this.p0.X(), diffY = this.p1.Y() - this.p0.Y();
const t3 = board.create('transform', [() => this.p1.X() - diffX, () => this.p1.Y() - diffY], {type:'translate'});
t3.bindTo([this.p2, this.p3, this.p4, this.label, this.bl]);
// implement state switching
this.obj = [ this.p1, this.bl, this.c, this.label, this.label.label];
// state init
switch (this.state) {
case 'show': show(this); makeSwitchable(this.c, this); break;
case 'hide': hide(this); makeSwitchable(this.c, this); break;
case 'SHOW': SHOW(this); break;
case 'HIDE': HIDE(this); break;
}
// proximity
this.loads = []
}
data(){ let a = this.d.slice(0); a.push(this.state); return a}
name(){ return targetName(this) }
hasPoint(pt) {return isOn(pt,this.p1)}
}
// Slider
// [ "fix13", "name", [x, y], angle, state ]
class fix13 {
constructor(data) {
this.state = (typeof data[data.length-1] == 'string') ? data.pop() : "SHOW";
this.d = data.slice(0);
// base points
const coords = [
[0,0], // base point
[0, -0.5*a], // p
[0, +0.5*a], // p
[-0.2*a, -0.8*a], // p
[-0.2*a, +0.8*a], // p
[-1.1*a,0] // label
];
let p = [], c;
for (c of coords) { p.push(board.create('point', c, {visible:false}));}
const t1 = board.create('transform', [data[3]*deg2rad], {type:'rotate'});
const t2 = board.create('transform', data[2], {type:'translate'});
t1.applyOnce(p);
t2.applyOnce(p);
// dependent objects
// base point
const pointConfigs = {fixed: true, visible: false};
const points = p.map((coord, index) => board.create('point', XY(coord), index === 0 ?
{name: '', ...silentPStyle} : pointConfigs));
[this.p1, this.p2, this.p3, this.p4, this.p5, this.p6] = points;
// label
this.label = board.create('point', XY(this.p6), {name:toTEX(data[1]), ...centeredLabelStyle});
this.l = board.create('segment', [this.p2,this.p3], {name: '', ...normalStyle});
this.bl = board.create('segment', [this.p4,this.p5], {name: '', ...normalStyle});
this.c = board.create("comb", [this.p5,this.p4], {...hatchStyle(), angle:-45*deg2rad});
// Enable object animation
this.p0 = board.create('point', [0,0], {fixed:true, visible:false});
const diffX = this.p1.X() - this.p0.X(), diffY = this.p1.Y() - this.p0.Y();
const t3 = board.create('transform', [() => this.p1.X() - diffX, () => this.p1.Y() - diffY], {type:'translate'});
t3.bindTo([this.p2, this.p3, this.p4, this.p5, this.p6, this.label, this.bl]);
// switchable objects
this.obj = [ this.p1, this.l, this.bl, this.c, this.label, this.label.label];
// state init
switch (this.state) {
case 'show': show(this); makeSwitchable(this.c, this); makeSwitchable(this.l, this); break;
case 'hide': hide(this); makeSwitchable(this.c, this); makeSwitchable(this.l, this); break;
case 'SHOW': SHOW(this); break;
case 'HIDE': HIDE(this); break;
}
// proximity
this.loads = []
}
data(){ let a = this.d.slice(0); a.push(this.state); return a}
name(){ return targetName(this) }
hasPoint(pt) {return isOn(pt,this.p1)}
}
// [ "force", "name", [x1, y1], [x2,y2], d , state ]
class force {
constructor(data) {
// parameter handling
this.d = data;
this.fname = data[1];
if (data[4]) { this.off = data[4] } else { this.off = 10 }
if (this.off >= 0) {this.name1 = ""; this.name2 = toTEX(data[1]) } else
{this.name2 = ""; this.name1 = toTEX(data[1]) }
if (data[5]) { this.state = data[5] } else { this.state = "locked" }
// snap and appearance depending on state
const labelopts = {offset:[this.off,0], autoPosition:true, color:loadColor};
let pstyle = {snapToGrid:false, size:0, fixed:true, snapToPoints:false, label:labelopts};
let hl = false;
if (this.state == "active") {
pstyle = {snapToGrid:true, fixed:false, size:2, snapToPoints:true,
attractors:targets, attractorDistance: 0.1, snatchdistance:0.2, label:labelopts};
hl = true; }
// start and end point
this.p1 = board.create('point', data[2], { name: this.name1,
...pstyle });
this.p2 = board.create('point', data[3], { name: this.name2,
...pstyle });
// configure infobox
this.p1.dp = [dpx+1,dpy+1];
this.p2.start = this.p1;
this.p2.dp = [dpx+1,dpy+1];
this.p2.ref = function() { return XY(this.start) };
this.p2.infoboxlabel = "Vektor ";
if (this.state == "silent") {this.p2.setAttribute({showInfobox:false})}
// dash
let d = 0; if (this.state == "dotted") d=2
this.vec = board.create('arrow', [this.p1, this.p2], {
touchLastPoint: true, lastArrow:{size:5, type:2}, highlight:hl, snaptogrid:true,
highlightStrokeColor:highlightColor, strokeColor:loadColor, dash:d});
// interactive control
if (this.state == "active") {this.vec.setAttribute({fixed:false, snapToGrid:true})}
this.vec.obj = [this.vec, this.p1, this.p2];
this.vec.parent = this;
// postproceswsing
this.vec.lastclick = Date.now();
let that = this
// remove object on doubleclick
this.vec.on('up', function() {
if (Date.now()-this.lastclick < 500 && that.state == "active") {
console.log("delete force")
that.state = "deleted"; cleanUp();
board.removeObject(this.obj, true); update()
} else {this.lastclick = Date.now(); update()}
})
this.vec.on('drag', function() { board.update(); that.p1.moveTo(XY(that.p1)); that.p2.moveTo(XY(that.p2))
// that.p1.moveTo(XY(that.p1)); that.p2.moveTo(XY(that.p2)) }
})
// avoid zero length of vector
this.p2.on('up', function() {
console.log("length check")
if (that.vec.L() === 0) {
console.log('Force length should not be zero.');
that.p2.moveTo(plus(XY(that.p2),[0.5,0]),0) }
else {board.update(); update()} })
// switch off highlighting if locked
this.obj = [this.vec, this.p1, this.p2, this.p2.label];
if (this.state == "locked") { lock(this) }
// update conditions
this.p1.on("up", function () {board.update(); update()})
// points for position check
this.proximityPoints = [this.p1, this.p2];
}
data() { return [this.d[0], this.fname, XY(this.p1), XY(this.p2), this.off, this.state ] }
name() { return toSTACK(this.fname) }
}
// [ "forceGen", "name", [x,y]]
class forceGen {
constructor(data) {
// input field
this.d = data;
const dy = -20*pxunit, dx = 40*pxunit;
// HTML trick because input.set() doesn't work in the callback
const fid = divid+"_fname"; // unique ID for html object even if multiple widgets on a page
let t = board.create('text', [ data[2][0], data[2][1],
'<input type="text" id='+fid+' value="'+data[1]+'" size="1">'], {fixed: true});
// ref point for checking drag distance
const ref1 = board.create('point', plus(data[2], [0,dy]), {visible:false});
const ref2 = board.create('point', plus(data[2], [dx,dy]), {visible:false});
// arrow
const p1 = board.create('point', plus(data[2], [0,dy]), {
name: '', fixed:false, visible: false });
const p2 = board.create('point', plus(data[2], [dx,dy]), {
name: toTEX(document.getElementById(fid).value), fixed:false, visible:false, label:{offset:[5,0], visible:true, color:'gray'} });
p2.addParents(t);
let vec = board.create('arrow', [p1, p2],
{ fixed:false, color:'gray',lastArrow:{size:5, type:2}, highlight:true,
highlightStrokeColor:highlightColor} );
// callback creates new force object and new name
vec.parent = this;
t.on('out', function(e) {
document.getElementById(fid).value = cleanupName(document.getElementById(fid).value)
p2.setAttribute({name:toTEX(document.getElementById(fid).value) })});
vec.on('up', function(e) {
//only generate force if distance is sufficient to not create overlapping objects
if (ref1.Dist(this.point1)+ref2.Dist(this.point2) >dx) {
objects.push(new force(["force", document.getElementById(fid).value,
XY(p1), XY(p2), 10, "active"] ));
// generate new unique force name
let f = [];
for (let m of objects) {
if (m.data()[0] == 'force') { f = f.concat(m.data()[1]) } }
let i = 1, n = '', found = true;
while (found ) { n = 'F_'+i.toString(); found = f.includes(n);i ++;}
document.getElementById(fid).value = n;
vec.parent.d[1] = n;
update();
}
// whatever happened, move the arrow back
p1.setPositionDirectly(JXG.COORDS_BY_USER, XY(ref1), XY(p1) );
p2.setPositionDirectly(JXG.COORDS_BY_USER, XY(ref2), XY(p2) );
p2.setAttribute({name:toTEX(document.getElementById(fid).value) }) });
}
data(){ return this.d }
name(){ return "0" }
}
// [ "frame", "", [ Array of ccordinates ], tension]
class frame {
constructor(data) {
this.d = data;
if(data[3]){
this.t = data[3];
} else{
this.t = 3;
}
this.fr = board.create('metapostspline', [data[2], {
tension: this.t, // <--- Je höher desto kantiger
isClosed: true
}], {
strokeColor: 'grey',
strokeWidth: 2,
dash: 2,
points: {visible: false}
});
}
data() { return this.d }
name(){ return "0" }
}
// grid control object: [ "grid", "xlabel", "ylabel", xmin, xmax, ymin, ymax, pix ]
// grid control object: [ "grid", "xlabel", "ylabel", xmin, xmax, ymin, ymax, pix, [fx, fy] ]
// newer version of class grid to fix grid lines issue
class grid {
constructor(data) {
this.d = data;
const xmin = data[3];
const xmax = data[4];
const ymin = data [5];
const ymax = data [6];
const pix = data [7];
var fx = 1, fy = 1;
if (data[8]) {fx = data[8][0]; fy = data[8][1]; xscale = fx; yscale = fy };
if (data[9]) {dpx = data[9][0]; dpy = data[9][1] };
var width = pix*Math.abs(xmax-xmin)
var height = pix*Math.abs(ymax-ymin)
// logics of container sizing and grid scaling has changed between 1.2.1 and 1.3.2 and in 2023
try {