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Elements
Classes

Element Circle

JXG.GeometryElement
   ↳ JXG.Circle
         ↳ Circle

This element is used to provide a constructor for a circle.

Defined in: circle.js.
Extends JXG.Circle.

Element Summary
Constructor Attributes Constructor Name and Description
 
Circle
A circle consists of all points with a given distance from one point.
Attributes Summary
Field Attributes Field Name and Description
 
center
Attributes for center point.
 
hasInnerPoints
If true, moving the mouse over inner points triggers hasPoint.
 
label
Attributes for circle label.
 
point
Attributes for center point.
 
point2
Attributes for center point.
Methods borrowed from class JXG.Circle:
addTransform, Area, bounds, Diameter, generateRadiusSquared, getParents, getRadius, hasPoint, maxX, minX, notifyParents, Perimeter, Radius, setRadius, update, updateQuadraticform, updateRenderer, updateStdform, X, Y, Z
Methods borrowed from class JXG.GeometryElement:
_set, addChild, addDescendants, addParents, addParentsFromJCFunctions, addRotation, addTicks, animate, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, formatNumberLocale, fullUpdate, generatePolynomial, getAttribute, getAttributes, getLabelAnchor, getName, getProperty, getSnapSizes, getTextAnchor, getType, handleSnapToGrid, hide, hideElement, noHighlight, normalize, prepareUpdate, remove, removeAllTicks, removeChild, removeDescendants, removeTicks, resolveShortcuts, setArrow, setAttribute, setDash, setDisplayRendNode, setLabel, setLabelText, setName, setParents, setPosition, setPositionDirectly, setProperty, show, showElement, snapToPoints, updateVisibility, useLocale
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
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). If the radius is a negative value, its absolute values is taken.
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, see JXG.providePoints, 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.

If the radius is supplied as number or output of a function, its absolute value is taken.



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]),
    p2 = board.create('point', [2.0, 0.0]),
    c1 = board.create('circle', [p1, p2]);

// Create another circle using the above circle
var p3 = board.create('point', [3.0, 2.0]),
    c2 = board.create('circle', [p3, c1]);


				
				
// Create a circle providing two points
var p1 = board.create('point', [2.0, 2.0]),
    c1 = board.create('circle', [p1, 3]);

// Create another circle using the above circle
var c2 = board.create('circle', [function() { return [p1.X(), p1.Y() + 1];}, function() { return c1.Radius(); }]);




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

var c1 = board.create('circle', [[-2,-2], [-2, -1]], {center: {visible:true}});
var c2 = board.create('circle', [c1, reflect]);
     * 



				
				
var t = board.create('transform', [2, 1.5], {type: 'scale'});
var c1 = board.create('circle', [[1.3, 1.3], [0, 1.3]], {strokeColor: 'black', center: {visible:true}});
var c2 = board.create('circle', [c1, t], {strokeColor: 'black'});





				
                

				


			

			


			
				

    				 Attribute Detail
				

				
					 
					


					{Point}
					center

					

					

						Attributes for center point.
						
							

							Defined in:  options.js.
						
						
					


					

						
						
						
						

					

				
					 
					


					{Boolean}
					hasInnerPoints

					

					

						If true, moving the mouse over inner points triggers hasPoint.
						
							

							Defined in:  options.js.
						
						
					


					

						
						
						
							

							
See:

							
							
JXG.GeometryElement#hasPoint

							
							

						
						
							

							
Default Value:

							

								false
							

							

						

					

				
					 
					


					{Label}
					label

					

					

						Attributes for circle label.
						
							

							Defined in:  options.js.
						
						
					


					

						
						
						
						

					

				
					 
					


					{Point}
					point

					

					

						Attributes for center point.
						
							

							Defined in:  options.js.
						
						
					


					

						
						
						
						

					

				
					 
					


					{Point}
					point2

					

					

						Attributes for center point.
						
							

							Defined in:  options.js.
						
						
					


					

						
						
						
						

					
				
			


			


			


			

			


			
                
                

                    Attributes borrowed from other Elements
                


                

                
Attributes borrowed from class JXG.GeometryElement: 
dash, dashScale, draft, dragToTopOfLayer, fillColor, fillOpacity, fixed, frozen, gradient, gradientAngle, gradientCX, gradientCY, gradientEndOffset, gradientFR, gradientFX, gradientFY, gradientR, gradientSecondColor, gradientSecondOpacity, gradientStartOffset, highlight, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, isLabel, layer, lineCap, needsRegularUpdate, nonnegativeOnly, precision, priv, rotatable, scalable, shadow, snapToGrid, strokeColor, strokeOpacity, strokeWidth, tabindex, trace, traceAttributes, transitionDuration, transitionProperties, viewport, visible, withLabel

                

                

                


				
				

					Fields borrowed from other Elements
				


				

				
Fields borrowed from class JXG.Circle: 
circle, line, method, radius
Fields borrowed from class JXG.GeometryElement: 
_org_type, _pos, ancestors, baseElement, board, childElements, descendants, dump, elementClass, elType, hasLabel, highlighted, id, inherits, isDraggable, isReal, lastDragTime, methodMap, mouseover, name, needsUpdate, notExistingParents, numTraces, parents, quadraticform, rendNode, stdform, subs, symbolic, traces, transformations, type, visProp, visPropCalc

				

				

				

				
				

					Methods borrowed from other Elements
				

				

				
Methods borrowed from class JXG.Circle: 
addTransform, Area, bounds, Diameter, generateRadiusSquared, getParents, getRadius, hasPoint, maxX, minX, notifyParents, Perimeter, Radius, setRadius, update, updateQuadraticform, updateRenderer, updateStdform, X, Y, Z
Methods borrowed from class JXG.GeometryElement: 
_set, addChild, addDescendants, addParents, addParentsFromJCFunctions, addRotation, addTicks, animate, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, formatNumberLocale, fullUpdate, generatePolynomial, getAttribute, getAttributes, getLabelAnchor, getName, getProperty, getSnapSizes, getTextAnchor, getType, handleSnapToGrid, hide, hideElement, noHighlight, normalize, prepareUpdate, remove, removeAllTicks, removeChild, removeDescendants, removeTicks, resolveShortcuts, setArrow, setAttribute, setDash, setDisplayRendNode, setLabel, setLabelText, setName, setParents, setPosition, setPositionDirectly, setProperty, show, showElement, snapToPoints, updateVisibility, useLocale

				

				

                

                
   				

    				Events borrowed from other Elements
                

                

                
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

                

                

            

		




		

			
			Documentation generated by JsDoc Toolkit 2.4.0 on Wed Oct 23 2024 15:44:11 GMT+0200 (Mitteleuropäische Sommerzeit)