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Classes


Class Parabola


Extends JXG.Curve.
This element is used to provide a constructor for a parabola. A parabola is given by one point (the focus) and a line (the directrix).
Defined in: Conic.js.

Class Summary
Constructor Attributes Constructor Name and Description
 
Parabola(point,line)
Fields borrowed from class JXG.Curve:
curveType, doAdvancedPlot, numberPoints, numberPointsHigh, numberPointsLow
Fields borrowed from class JXG.GeometryElement:
ancestors, board, childElements, dash, descendants, draft, fillColor, fillOpacity, fixed, hasLabel, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, id, isReal, layer, name, needsRegularUpdate, needsUpdate, notExistingParents, numTraces, quadraticform, shadow, stdform, strokeColor, strokeOpacity, strokeWidth, symbolic, trace, traces, transformations, visible, visProp
Methods borrowed from class JXG.Curve:
allocatePoints, cloneToBackground, generateTerm, getLabelAnchor, hasPoint, maxX, minX, notifyParents, update, updateCurve, updateDataArray, updateRenderer, X, Y
Methods borrowed from class JXG.GeometryElement:
addChild, addLabelToElement, animate, clearTrace, hideElement, highlight, labelColor, noHighlight, remove, setArrow, setProperty, showElement
Class Detail
Parabola(point,line)
// Create a parabola by a point C and a line l.
var A = board.create('point', [-1,4]);
var B = board.create('point', [-1,-4]);
var l = board.create('line', [A,B]);
var C = board.create('point', [1,1]);
var el = board.create('parabola',[C,l]);

				
				
				
				
					
						
Parameters:
{JXG.Point|array_JXG.Line} point,line
Parent elements are a point and a line. Optional parameters three and four are numbers which define the curve length (e.g. start/end). Default values are -pi and pi.
Throws:
{Exception}
If the element cannot be constructed with the given parent objects an exception is thrown.

Documentation generated by JsDoc Toolkit 2.4.0 on Sat Mar 22 2014 12:02:46 GMT-0000 (UTC)