Class JXG.Point3D

JXG.GeometryElement3D,JXG.GeometryElement
↳ JXG.Point3D

Creates a new 3D point object. Do not use this constructor to create a 3D point. Use JXG.View3D#create with type Point3D instead.

Defined in: point3d.js.
Extends JXG.GeometryElement, JXG.GeometryElement3D.

Class Summary
Constructor Attributes	Constructor Name and Description
	JXG.Point3D(view, F, slide, attributes) A 3D point is the basic geometric element.

Fields borrowed from class JXG.GeometryElement3D:: element2D, is3D, view
Fields borrowed from class JXG.GeometryElement:: _org_type, _pos, ancestors, aria, baseElement, board, childElements, cssClass, dash, dashScale, descendants, draft, dragToTopOfLayer, dump, element3D, elementClass, elType, fillColor, fillOpacity, fixed, frozen, gradient, gradientAngle, gradientCX, gradientCY, gradientEndOffset, gradientFR, gradientFX, gradientFY, gradientR, gradientSecondColor, gradientSecondOpacity, gradientStartOffset, hasLabel, highlight, highlightCssClass, highlighted, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, id, inherits, isDraggable, isLabel, isReal, lastDragTime, layer, lineCap, methodMap, mouseover, name, needsRegularUpdate, needsUpdate, nonnegativeOnly, notExistingParents, numTraces, parents, precision, priv, quadraticform, rendNode, rotatable, scalable, shadow, snapToGrid, stdform, strokeColor, strokeOpacity, strokeWidth, subs, symbolic, tabindex, trace, traceAttributes, traces, transformations, transitionDuration, transitionProperties, type, visible, visProp, visPropCalc, withLabel

Field Summary
Field Attributes	Field Name and Description
<private> <static>	JXG.Point3D.endpoints Shadow points that determine the visible line.
<private>	position In case, the point is a glider, store the preimage of the coordinates in terms of the parametric definition of the host element.

Fields borrowed from class JXG.GeometryElement3D:: element2D, is3D, view
Fields borrowed from class JXG.GeometryElement:: _org_type, _pos, ancestors, aria, baseElement, board, childElements, cssClass, dash, dashScale, descendants, draft, dragToTopOfLayer, dump, element3D, elementClass, elType, fillColor, fillOpacity, fixed, frozen, gradient, gradientAngle, gradientCX, gradientCY, gradientEndOffset, gradientFR, gradientFX, gradientFY, gradientR, gradientSecondColor, gradientSecondOpacity, gradientStartOffset, hasLabel, highlight, highlightCssClass, highlighted, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, id, inherits, isDraggable, isLabel, isReal, lastDragTime, layer, lineCap, methodMap, mouseover, name, needsRegularUpdate, needsUpdate, nonnegativeOnly, notExistingParents, numTraces, parents, precision, priv, quadraticform, rendNode, rotatable, scalable, shadow, snapToGrid, stdform, strokeColor, strokeOpacity, strokeWidth, subs, symbolic, tabindex, trace, traceAttributes, traces, transformations, transitionDuration, transitionProperties, type, visible, visProp, visPropCalc, withLabel

Method Summary
Method Attributes	Method Name and Description
	distance(pt) Calculate the distance from one point to another.
<private>	initCoords() Initialize the coords array.
	testIfFinite() Check whether a point's position is finite, i.e.

Methods borrowed from class JXG.GeometryElement:: _set, addChild, addDescendants, addParents, addParentsFromJCFunctions, addRotation, addTicks, addTransform, animate, bounds, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, eval, evalVisProp, formatNumberLocale, fullUpdate, generatePolynomial, getAttribute, getAttributes, getLabelAnchor, getName, getParents, getProperty, getSnapSizes, getTextAnchor, getType, handleSnapToGrid, hasPoint, 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, update, updateRenderer, updateVisibility, useLocale

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

Class Detail

JXG.Point3D(view, F, slide, attributes)

A 3D point is the basic geometric element.

Parameters:
{JXG.View3D} view: The 3D view the point is drawn on.
{Function|Array} F: Array of numbers, array of functions or function returning an array with defines the user coordinates of the point.
{JXG.GeometryElement3D} slide: Object the 3D point should be bound to. If null, the point is a free point.
{Object} attributes: An object containing visual properties like in JXG.Options#point3d and JXG.Options#elements, and optional a name and an id.

See:: JXG.Board#generateName

Field Detail

<private> <static> {Array} JXG.Point3D.endpoints

Shadow points that determine the visible line. This is of relevance if the line is defined by two points and has straightFirst or straightLast set to true. In such a case, the shadow points are the intersection of the line with the cube.
Defined in: linspace3d.js.

<private> {Array} position

In case, the point is a glider, store the preimage of the coordinates in terms of the parametric definition of the host element. That is, if the host element `slide` is a curve, and the coordinates of the point are equal to `p` and `u = this.position[0]`, then `p = [slide.X(u), slide.Y(u), slide.Z(u)]`.

Method Detail

{Number} distance(pt)

Calculate the distance from one point to another. If one of the points is on the plane at infinity, return positive infinity.

Parameters:
{JXG.Point3D} pt: The point to which the distance is calculated.

Returns:: {Number} The distance

<private> {Object} initCoords()

Initialize the coords array.

Returns:: {Object} Reference to the Point3D object

{Boolean} testIfFinite()

Check whether a point's position is finite, i.e. the first entry is not zero.

Returns:: {Boolean} True if the first entry of the coordinate vector is not zero; false otherwise.

JSXGraph 1.11.0beta2 Reference

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Class JXG.Point3D