JSXGraph Reference
ElementsElement Arc
JXG.GeometryElement
↳ JXG.Curve
↳ Curve
↳ Arc
An arc is a segment of the circumference of a circle. It is defined by a center, one point that
defines the radius, and a third point that defines the angle of the arc.
Defined in: arc.js.
Extends
Curve.
| Constructor Attributes | Constructor Name and Description |
|---|---|
| Field Attributes | Field Name and Description |
|---|---|
|
The point defining the arc's angle.
|
|
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Center of the arc.
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Point defining the arc's radius.
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| Method Attributes | Method Name and Description |
|---|---|
| <deprecated> | |
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hasPointSector(x, y)
Checks whether (x,y) is within the sector defined by the arc.
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Radius()
Determines the arc's current radius.
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- Methods borrowed from class JXG.Curve:
- addTransform, allocatePoints, checkReal, generateTerm, hasPoint, interpolationFunctionFromArray, isDistOK, isSegmentOutside, maxX, minX, notifyParents, setPosition, setPositionDirectly, update, updateCurve, updateDataArray, updateParametricCurve, updateParametricCurveNaive, updateRenderer, updateTransform, Z
- Methods borrowed from class JXG.GeometryElement:
- _set, addChild, addDescendants, addRotation, animate, bounds, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, generatePolynomial, 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
Arc
-
This element has no direct constructor. To create an instance of this element you have to call JXG.Board#create
with type "arc".
- Possible parent array combinations are:
-
{JXG.Point} p1
{JXG.Point} p2
{JXG.Point} p3
- The result will be an arc of a circle around p1 through p2. The arc is drawn counter-clockwise from p2 to p3.
- Throws:
- {Error}
- If the element cannot be constructed with the given parent objects an exception is thrown.
- Examples:
// Create an arc out of three free points
var p1 = board.create('point', [2.0, 2.0]);
var p2 = board.create('point', [1.0, 0.5]);
var p3 = board.create('point', [3.5, 1.0]);
var a = board.create('arc', [p1, p2, p3]);
Field Detail
{JXG.Point}
anglepoint
The point defining the arc's angle.
{JXG.Point}
center
Center of the arc.
{JXG.Point}
radiuspoint
Point defining the arc's radius.
Method Detail
{Number}
getRadius()
- Deprecated:
- Use Arc#Radius
- Returns:
- {Number}
{Boolean}
hasPointSector(x, y)
Checks whether (x,y) is within the sector defined by the arc.
- Parameters:
- {Number} x
- Coordinate in x direction, screen coordinates.
- {Number} y
- Coordinate in y direction, screen coordinates.
- Returns:
- {Boolean} True if (x,y) is within the sector defined by the arc, False otherwise.
{Number}
Radius()
Determines the arc's current radius. I.e. the distance between Arc#center and Arc#radiuspoint.
- Returns:
- {Number} The arc's radius
Attributes borrowed from other Elements
- Attributes borrowed from class JXG.Curve:
- curveType, handDrawing
- 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.Curve:
- numberPoints
- 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.Curve:
- addTransform, allocatePoints, checkReal, generateTerm, hasPoint, interpolationFunctionFromArray, isDistOK, isSegmentOutside, maxX, minX, notifyParents, setPosition, setPositionDirectly, update, updateCurve, updateDataArray, updateParametricCurve, updateParametricCurveNaive, updateRenderer, updateTransform, Z
- Methods borrowed from class JXG.GeometryElement:
- _set, addChild, addDescendants, addRotation, animate, bounds, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, generatePolynomial, 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