Class Ellipse
JXG.GeometryElement
↳ JXG.Curve
↳ Conic
↳ Ellipse
This element is used to provide a constructor for an ellipse. An ellipse is given by two points (the foci) and a third point on the the ellipse or
the length of the major axis.
Defined in: conic.js.
Extends
Conic.
Constructor Attributes | Constructor Name and Description |
---|---|
Ellipse(point1,point2,point3, point1,point2,number)
|
- Fields borrowed from class Conic:
- foci
- Fields borrowed from class JXG.Curve:
- dataX, dataY, numberPoints, qdt
- 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, 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, type, visible, visProp, withLabel
- Fields borrowed from class Conic:
- foci
- Fields borrowed from class JXG.Curve:
- dataX, dataY, numberPoints, qdt
- 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, 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, type, visible, visProp, withLabel
- Methods borrowed from class JXG.Curve:
- _borderCase, _insertPoint, _intersectWithBorder, _isOutside, _isUndefined, _plotRecursive, _triangleDists, addTransform, allocatePoints, checkReal, generateTerm, hasPoint, interpolationFunctionFromArray, isDistOK, isSegmentDefined, isSegmentOutside, maxX, minX, notifyParents, update, updateCurve, updateDataArray, updateParametricCurve, updateParametricCurveNaive, updateParametricCurveOld, updateRenderer, updateTransform, X, Y, Z
- Methods borrowed from class JXG.GeometryElement:
- _set, addChild, addDescendants, addParents, addRotation, animate, bounds, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, generatePolynomial, getAttribute, getAttributes, getLabelAnchor, getName, getParents, getProperty, getTextAnchor, getType, handleSnapToGrid, hideElement, labelColor, noHighlight, normalize, prepareUpdate, remove, removeChild, removeDescendants, resolveShortcuts, setArrow, setAttribute, setDash, setLabel, setLabelText, setName, setParents, setPosition, setPositionDirectly, setProperty, showElement, snapToPoints
- 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
Ellipse(point1,point2,point3, point1,point2,number)
- Parameters:
- {JXG.Point|array_JXG.Point|array_JXG.Point|array} point1,point2,point3
- Parent elements can be three elements either of type JXG.Point or array of numbers describing the coordinates of a point. In the latter case the point will be constructed automatically as a fixed invisible point.
- {JXG.Point|array_JXG.Point|array_number|function} point1,point2,number
- Parent elements can be two elements either of type JXG.Point or array of numbers describing the coordinates of a point. The third parameter is a number/function which defines the length of the major axis Optional parameters four and five 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.
- Examples:
// Create an Ellipse by three points var A = board.create('point', [-1,4]); var B = board.create('point', [-1,-4]); var C = board.create('point', [1,1]); var el = board.create('ellipse',[A,B,C]);