Element Measurement
JXG.CoordsElement,JXG.GeometryElement
↳ JXG.Text
↳ Text
↳ Measurement
Measurement element. Under the hood this is a text element which has a method Value. The text to be displayed is the result of the evaluation of a prefix expression, see JXG.PrefixParser.
The purpose of this element is to display values of measurements of geometric objects, like the radius of a circle,
as well as expressions consisting of measurements.
Defined in: measure.js.
Extends
Text.
| Constructor Attributes | Constructor Name and Description |
|---|---|
- Methods borrowed from class JXG.Text:
- _createFctUpdateText, _setText, bounds, checkForSizeUpdate, convertGeonext2CSS, convertGeonextAndSketchometry2CSS, convertSketchometry2CSS, crudeSizeEstimate, escapeTicks, expandShortMath, generateTerm, getAnchorX, getAnchorY, getNumberOfConflicts, getSize, hasPoint, notifyParents, poorMansTeX, replaceSub, replaceSup, setAutoPosition, setCoords, setText, setTextJessieCode, unescapeTicks, update, updateRenderer, updateSize, updateText, utf8_decode, valueTagToJessieCode
- Methods borrowed from class JXG.GeometryElement:
- _set, addChild, addDescendants, addParents, addParentsFromJCFunctions, addRotation, addTicks, addTransform, animate, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, formatNumberLocale, fullUpdate, generatePolynomial, getAttribute, getAttributes, getLabelAnchor, getName, getParents, getProperty, getSnapSizes, getTextAnchor, getType, handleSnapToGrid, hide, hideElement, noHighlight, normalize, prepareUpdate, remove, removeAllTicks, removeChild, removeDescendants, removeTicks, resolveShortcuts, setArrow, setAttribute, setDash, setDisplayRendNode, setLabel, setLabelText, setName, setParents, setPosition, setPositionDirectly, setProperty, show, showElement, snapToPoints, updateVisibility, useLocale
- Methods borrowed from class JXG.CoordsElement:
- _anim, addAnchor, addConstraint, Coords, Dist, findClosestSnapValue, free, handleAttractors, handleSnapToPoints, makeGlider, moveAlong, moveTo, popSlideObject, setGliderPosition, setPositionByTransform, updateConstraint, updateCoords, updateGlider, updateGliderFromParent, updateTransform, visit, X, XEval, Y, YEval, Z, ZEval
- Events borrowed from class JXG.GeometryElement:
- attribute, attribute:key, down, drag, keydrag, mousedown, mousedrag, mousemove, mouseout, mouseover, mouseup, move, out, over, pendown, pendrag, penup, touchdown, touchdrag, touchup, up
Element Detail
Measurement
-
This element has no direct constructor. To create an instance of this element you have to call JXG.Board#create
with type "measurement".
- Possible parent array combinations are:
-
{Point|Array} x
{Point|Array} y
{Array} expression
- Here, expression is a prefix expression, see JXG.PrefixParser.
- Throws:
- {Exception}
- If the element cannot be constructed with the given parent objects an exception is thrown.
- Examples:
var p1 = board.create('point', [1, 1]);
var p2 = board.create('point', [1, 3]);
var ci1 = board.create('circle', [p1, p2]);
var m1 = board.create('measurement', [1, -2, ['Area', ci1]], {
visible: true,
prefix: 'area: ',
baseUnit: 'cm'
});
var m2 = board.create('measurement', [1, -4, ['Radius', ci1]], {
prefix: 'radius: ',
baseUnit: 'cm'
});
var p1 = board.create('point', [1, 1]);
var p2 = board.create('point', [1, 3]);
var ci1 = board.create('circle', [p1, p2]);
var seg = board.create('segment', [[-2,-3], [-2, 3]], { firstArrow: true, lastArrow: true});
var sli = board.create('slider', [[-4, 4], [-1.5, 4], [-10, 1, 10]], {name:'a'});
var m1 = board.create('measurement', [-6, -2, ['Radius', ci1]], {
prefix: 'm1: ',
baseUnit: 'cm'
});
var m2 = board.create('measurement', [-6, -4, ['L', seg]], {
prefix: 'm2: ',
baseUnit: 'cm'
});
var m3 = board.create('measurement', [-6, -6, ['V', sli]], {
prefix: 'm3: ',
baseUnit: 'cm',
dim: 1
});
var m4 = board.create('measurement', [2, -6,
['+', ['V', m1], ['V', m2], ['V', m3]]
], {
prefix: 'm4: ',
baseUnit: 'cm'
});
Attributes borrowed from other Elements
- Attributes borrowed from class Text:
- anchor, anchorX, anchorY, attractors, cssClass, cssDefaultStyle, cssStyle, digits, display, dragArea, fontSize, fontUnit, formatNumber, highlightCssClass, highlightCssDefaultStyle, highlightCssStyle, intl, isLabel, katexMacros, parse, rotate, snapSizeX, snapSizeY, toFraction, useASCIIMathML, useCaja, useKatex, useMathJax, visible
- Attributes borrowed from class JXG.GeometryElement:
- dash, dashScale, draft, dragToTopOfLayer, fillColor, fillOpacity, fixed, frozen, gradient, gradientAngle, gradientCX, gradientCY, gradientEndOffset, gradientFR, gradientFX, gradientFY, gradientR, gradientSecondColor, gradientSecondOpacity, gradientStartOffset, highlight, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, layer, lineCap, needsRegularUpdate, nonnegativeOnly, precision, priv, rotatable, scalable, shadow, snapToGrid, strokeColor, strokeOpacity, strokeWidth, tabindex, trace, traceAttributes, transitionDuration, transitionProperties, viewport, withLabel
Fields borrowed from other Elements
- Fields borrowed from class JXG.Text:
- size
- Fields borrowed from class JXG.GeometryElement:
- _org_type, _pos, ancestors, baseElement, board, childElements, descendants, dump, elementClass, elType, hasLabel, highlighted, id, inherits, isDraggable, isReal, lastDragTime, methodMap, mouseover, name, needsUpdate, notExistingParents, numTraces, parents, quadraticform, rendNode, stdform, subs, symbolic, traces, transformations, type, visProp, visPropCalc
- Fields borrowed from class JXG.CoordsElement:
- coords, groups, isConstrained, needsUpdateFromParent, onPolygon, position, slideObject, slideObjects
Methods borrowed from other Elements
- Methods borrowed from class JXG.Text:
- _createFctUpdateText, _setText, bounds, checkForSizeUpdate, convertGeonext2CSS, convertGeonextAndSketchometry2CSS, convertSketchometry2CSS, crudeSizeEstimate, escapeTicks, expandShortMath, generateTerm, getAnchorX, getAnchorY, getNumberOfConflicts, getSize, hasPoint, notifyParents, poorMansTeX, replaceSub, replaceSup, setAutoPosition, setCoords, setText, setTextJessieCode, unescapeTicks, update, updateRenderer, updateSize, updateText, utf8_decode, valueTagToJessieCode
- Methods borrowed from class JXG.GeometryElement:
- _set, addChild, addDescendants, addParents, addParentsFromJCFunctions, addRotation, addTicks, addTransform, animate, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, formatNumberLocale, fullUpdate, generatePolynomial, getAttribute, getAttributes, getLabelAnchor, getName, getParents, getProperty, getSnapSizes, getTextAnchor, getType, handleSnapToGrid, hide, hideElement, noHighlight, normalize, prepareUpdate, remove, removeAllTicks, removeChild, removeDescendants, removeTicks, resolveShortcuts, setArrow, setAttribute, setDash, setDisplayRendNode, setLabel, setLabelText, setName, setParents, setPosition, setPositionDirectly, setProperty, show, showElement, snapToPoints, updateVisibility, useLocale
- Methods borrowed from class JXG.CoordsElement:
- _anim, addAnchor, addConstraint, Coords, Dist, findClosestSnapValue, free, handleAttractors, handleSnapToPoints, makeGlider, moveAlong, moveTo, popSlideObject, setGliderPosition, setPositionByTransform, updateConstraint, updateCoords, updateGlider, updateGliderFromParent, updateTransform, visit, X, XEval, Y, YEval, Z, ZEval
Events borrowed from other Elements