JSXGraph Reference
ElementsElement Circle
JXG.GeometryElement
↳ JXG.Circle
↳ Circle
This element is used to provide a constructor for a circle.
Defined in: circle.js.
Extends
JXG.Circle.
| Constructor Attributes | Constructor Name and Description |
|---|---|
|
A circle consists of all points with a given distance from one point.
|
- Methods borrowed from class JXG.Circle:
- addTransform, generatePolynomial, generateRadiusSquared, getRadius, hasPoint, maxX, minX, notifyParents, Radius, setPosition, setPositionDirectly, setRadius, update, updateQuadraticform, updateRenderer, updateStdform, X, Y, Z
- Methods borrowed from class JXG.GeometryElement:
- _set, addChild, addDescendants, addRotation, animate, bounds, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, getAttribute, getAttributes, getLabelAnchor, getName, getParents, getTextAnchor, getType, hideElement, labelColor, noHighlight, normalize, off, on, prepareUpdate, remove, removeChild, removeDescendants, resolveShortcuts, setArrow, setAttribute, setDash, setLabelText, showElement, triggerEventHandlers
- 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
Element Detail
Circle
A circle consists of all points with a given distance from one point. This point is called center, the distance is called radius.
A circle can be constructed by providing a center and a point on the circle or a center and a radius (given as a number, function,
line, or circle).
-
This element has no direct constructor. To create an instance of this element you have to call JXG.Board#create
with type "circle".
- Possible parent array combinations are:
-
{JXG.Point} center
{number|JXG.Point|JXG.Line|JXG.Circle} radius
- The center must be given as a JXG.Point, but the radius can be given as a number (which will create a circle with a fixed radius), another JXG.Point, a JXG.Line (the distance of start and end point of the line will determine the radius), or another JXG.Circle.
- Throws:
- {Exception}
- If the element cannot be constructed with the given parent objects an exception is thrown.
- Examples:
// Create a circle providing two points
var p1 = board.create('point', [2.0, 2.0]);
var p2 = board.create('point', [2.0, 0.0]);
var c1 = board.create('circle', [p1, p2]);
// Create another circle using the above circle
var p3 = board.create('point', [3.0, 2.0]);
var c2 = board.create('circle', [p3, c1]);
Attributes borrowed from other Elements
- Attributes borrowed from class JXG.GeometryElement:
- dash, draft, fillColor, fillOpacity, fixed, frozen, highlight, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, needsRegularUpdate, scalable, shadow, snapToGrid, strokeColor, strokeOpacity, strokeWidth, trace, traceAttributes, visible, withLabel
Fields borrowed from other Elements
- Fields borrowed from class JXG.Circle:
- center, circle, line, method, point2, radius
- Fields borrowed from class JXG.GeometryElement:
- _pos, addEvent, ancestors, baseElement, board, childElements, descendants, dump, elementClass, elType, eventHandlers, getProperty, hasLabel, highlighted, id, isDraggable, isReal, lastDragTime, methodMap, mouseover, name, needsUpdate, notExistingParents, numTraces, quadraticform, removeEvent, rendNode, setProperty, stdform, subs, symbolic, traces, transformations, type, visProp
Methods borrowed from other Elements
- Methods borrowed from class JXG.Circle:
- addTransform, generatePolynomial, generateRadiusSquared, getRadius, hasPoint, maxX, minX, notifyParents, Radius, setPosition, setPositionDirectly, setRadius, update, updateQuadraticform, updateRenderer, updateStdform, X, Y, Z
- Methods borrowed from class JXG.GeometryElement:
- _set, addChild, addDescendants, addRotation, animate, bounds, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, getAttribute, getAttributes, getLabelAnchor, getName, getParents, getTextAnchor, getType, hideElement, labelColor, noHighlight, normalize, off, on, prepareUpdate, remove, removeChild, removeDescendants, resolveShortcuts, setArrow, setAttribute, setDash, setLabelText, showElement, triggerEventHandlers
Events borrowed from other Elements