Class Reflection
JXG.GeometryElement
↳ Reflection
This element is used to construct reflected elements (points, lines, circles, curves, polygons).
Defined in: composition.js.
Extends
JXG.GeometryElement.
Constructor Attributes | Constructor Name and Description |
---|---|
Reflection(p,l)
A reflected element (point, polygon, 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, dragToTopOfLayer, dump, elementClass, elType, fillColor, fillOpacity, fixed, frozen, gradient, gradientAngle, gradientCX, gradientCY, gradientEndOffset, gradientFR, gradientFX, gradientFY, gradientR, gradientSecondColor, gradientSecondOpacity, gradientStartOffset, hasLabel, highlight, highlighted, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, id, inherits, isDraggable, isReal, lastDragTime, methodMap, mouseover, name, needsRegularUpdate, needsUpdate, notExistingParents, numTraces, parents, precision, quadraticform, rendNode, rotatable, scalable, shadow, snapToGrid, stdform, strokeColor, strokeOpacity, strokeWidth, subs, symbolic, tabindex, trace, traceAttributes, traces, transformations, transitionDuration, transitionProperties, type, visible, visProp, visPropCalc, withLabel
- Fields borrowed from class JXG.GeometryElement:
- _org_type, _pos, ancestors, baseElement, board, childElements, dash, descendants, draft, dragToTopOfLayer, dump, elementClass, elType, fillColor, fillOpacity, fixed, frozen, gradient, gradientAngle, gradientCX, gradientCY, gradientEndOffset, gradientFR, gradientFX, gradientFY, gradientR, gradientSecondColor, gradientSecondOpacity, gradientStartOffset, hasLabel, highlight, highlighted, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, id, inherits, isDraggable, isReal, lastDragTime, methodMap, mouseover, name, needsRegularUpdate, needsUpdate, notExistingParents, numTraces, parents, precision, quadraticform, rendNode, rotatable, scalable, shadow, snapToGrid, stdform, strokeColor, strokeOpacity, strokeWidth, subs, symbolic, tabindex, trace, traceAttributes, traces, transformations, transitionDuration, transitionProperties, type, visible, visProp, visPropCalc, withLabel
- Methods borrowed from class JXG.GeometryElement:
- _set, addChild, addDescendants, addParents, addParentsFromJCFunctions, addRotation, addTicks, addTransform, animate, bounds, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, fullUpdate, generatePolynomial, getAttribute, getAttributes, getLabelAnchor, getName, getParents, getProperty, getSnapSizes, getTextAnchor, getType, handleSnapToGrid, hasPoint, hide, hideElement, labelColor, 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
- 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
Reflection(p,l)
A reflected element (point, polygon, 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 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', [[-3, -3, -2.5, -3, -3, -2.5], [-3, -2, -2, -2, -2.5, -2.5]], {strokeWidth:3}); var cu2 = board.create('reflection', [cu1, li], {strokeColor: 'red', strokeWidth:3}); var pol1 = board.create('polygon', [[-6,-3], [-4,-5], [-5,-1.5]]); var pol2 = board.create('reflection', [pol1, li]); var c1 = board.create('circle', [[-2,-2], [-2, -1]]); var c2 = board.create('reflection', [c1, li]); var a1 = board.create('arc', [[1, 1], [0, 1], [1, 0]], {strokeColor: 'red'}); var a2 = board.create('reflection', [a1, li], {strokeColor: 'red'}); var s1 = board.create('sector', [[-3.5,-3], [-3.5, -2], [-3.5,-4]], { anglePoint: {visible:true}, center: {visible: true}, radiusPoint: {visible: true}, fillColor: 'yellow', strokeColor: 'black'}); var s2 = board.create('reflection', [s1, li], {fillColor: 'yellow', strokeColor: 'black', fillOpacity: 0.5}); var an1 = board.create('angle', [[-4,3.9], [-3, 4], [-3, 3]]); var an2 = board.create('reflection', [an1, li]);