JavaScript must be enabled in order for you to use JSXGraph and JSXGraph reference. However, it seems JavaScript is either disabled or not supported by your browser.

Class Index | File Index

Elements

Classes


Class Reflection

JXG.GeometryElement
      ↳ Reflection

This element is used to construct a reflected point.

Defined in: composition.js.
Extends JXG.GeometryElement.

Class Summary
Constructor Attributes Constructor Name and Description
 
Reflection(p,l)
A reflected element (point, line or curve) is given by a given object of the same type and a line of reflection.
Fields borrowed from class JXG.GeometryElement:
_org_type, _pos, ancestors, baseElement, board, childElements, dash, descendants, draft, dump, elementClass, elType, fillColor, fillOpacity, fixed, frozen, hasLabel, highlight, highlighted, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, id, inherits, isDraggable, isReal, lastDragTime, methodMap, mouseover, name, needsRegularUpdate, needsUpdate, notExistingParents, numTraces, parents, quadraticform, rendNode, scalable, shadow, snapToGrid, stdform, strokeColor, strokeOpacity, strokeWidth, subs, symbolic, trace, traceAttributes, traces, transformations, transitionDuration, type, visible, visProp, visPropCalc, withLabel
Fields borrowed from class JXG.GeometryElement:
_org_type, _pos, ancestors, baseElement, board, childElements, dash, descendants, draft, dump, elementClass, elType, fillColor, fillOpacity, fixed, frozen, hasLabel, highlight, highlighted, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, id, inherits, isDraggable, isReal, lastDragTime, methodMap, mouseover, name, needsRegularUpdate, needsUpdate, notExistingParents, numTraces, parents, quadraticform, rendNode, scalable, shadow, snapToGrid, stdform, strokeColor, strokeOpacity, strokeWidth, subs, symbolic, trace, traceAttributes, traces, transformations, transitionDuration, type, visible, visProp, visPropCalc, withLabel
Methods borrowed from class JXG.GeometryElement:
_set, addChild, addDescendants, addParents, addRotation, addTransform, animate, bounds, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, fullUpdate, generatePolynomial, getAttribute, getAttributes, getLabelAnchor, getName, getParents, getProperty, getTextAnchor, getType, handleSnapToGrid, hasPoint, hideElement, labelColor, noHighlight, normalize, prepareUpdate, remove, removeChild, removeDescendants, resolveShortcuts, setArrow, setAttribute, setDash, setDisplayRendNode, setLabel, setLabelText, setName, setParents, setPosition, setPositionDirectly, setProperty, showElement, snapToPoints, update, updateRenderer, updateVisibility
Events borrowed from class JXG.GeometryElement:
attribute, attribute:<attribute><attribute>, down, drag, mousedown, mousedrag, mousemove, mouseout, mouseover, mouseup, move, out, over, touchdown, touchdrag, touchup, up
Class Detail
Reflection(p,l)
A reflected element (point, line or curve) is given by a given object of the same type and a line of reflection. It is determined by the reflection of the given element across the given line.
Parameters:
{JXG.Point|JXG.Line|JXG.Curve|JXG.Polygon_JXG.Line} p,l
The reflection element is the reflection of p across the line l.


Throws:
{Error}
If the element cannot be constructed with the given parent objects an exception is thrown.
Examples:
var p1 = board.create('point', [0.0, 4.0]);
var p2 = board.create('point', [6.0, 1.0]);
var l1 = board.create('line', [p1, p2]);
var p3 = board.create('point', [3.0, 3.0]);

var rp1 = board.create('reflection', [p3, l1]);

				
				
        // Reflection of more elements
        // reflection line
        var li = board.create('line', [1,1,1], {strokeColor: '#aaaaaa'});
        var reflect = board.create('transform', [li], {type: 'reflect'});

        var p1 = board.create('point', [-3,-1], {name: "A"});
        var q1 = board.create('reflection', [p1, li], {name: "A'"});

        var l1 = board.create('line', [1,-5,1]);
        var l2 = board.create('reflection', [l1, li]);

        var cu1 = board.create('curve', [[-1, -1, -0.5, -1, -1, -0.5], [-3, -2, -2, -2, -2.5, -2.5]]);
        var cu2 = board.create('reflection', [cu1, li], {strokeColor: 'red'});

        var pol1 = board.create('polygon', [[-3,-2], [-1,-4], [-2,-0.5]]);
        var pol2 = board.create('reflection', [pol1, li]);