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Elements
Classes

Element Polygon

JXG.GeometryElement
   ↳ JXG.Polygon
         ↳ Polygon

A polygon is an area enclosed by a set of border lines which are determined by

Each two consecutive points of the list define a line.

Defined in: polygon.js.
Extends JXG.Polygon.

Element Summary
Constructor Attributes Constructor Name and Description
 
Polygon
Attributes Summary
Field Attributes Field Name and Description
 
borders
Attributes for the polygon border lines.
 
hasInnerPoints
If true, moving the mouse over inner points triggers hasPoint.
 
highlightByStrokeWidth
By default, the strokewidths of the borders of a polygon are not changed during highlighting (only strokeColor and strokeOpacity are changed to highlightStrokeColor, and highlightStrokeOpacity).
 
label
Attributes for the polygon label.
 
vertices
Attributes for the polygon vertices.
 
withLines
Is the polygon bordered by lines?
Methods borrowed from class JXG.Polygon:
addPoints, Area, boundingBox, findPoint, getTextAnchor, hasPoint, hideElement, insertPoints, intersect, L, Perimeter, pnpoly, remove, removePoints, setPositionDirectly, showElement, sutherlandHodgman, updateRenderer
Methods borrowed from class JXG.GeometryElement:
_set, addChild, addDescendants, addParents, addParentsFromJCFunctions, addRotation, addTicks, addTransform, animate, bounds, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, formatNumberLocale, fullUpdate, generatePolynomial, getAttribute, getAttributes, getLabelAnchor, getName, getParents, getProperty, getSnapSizes, getType, handleSnapToGrid, hide, noHighlight, normalize, prepareUpdate, removeAllTicks, removeChild, removeDescendants, removeTicks, resolveShortcuts, setArrow, setAttribute, setDash, setDisplayRendNode, setLabel, setLabelText, setName, setParents, setPosition, setProperty, show, snapToPoints, update, 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
Polygon
This element has no direct constructor. To create an instance of this element you have to call JXG.Board#create with type "polygon".

Possible parent array combinations are:
{Array} vertices

The polygon's vertices. If the first and the last vertex don't match the first one will be added to the array by the creator. Here, two points match if they have the same 'id' attribute. Additionally, a polygon can be created by providing a polygon and a transformation (or an array of transformations). The result is a polygon which is the transformation of the supplied polygon.


Throws:
{Exception}
If the element cannot be constructed with the given parent objects an exception is thrown.
Examples:
var p1 = board.create('point', [0.0, 2.0]);
var p2 = board.create('point', [2.0, 1.0]);
var p3 = board.create('point', [4.0, 6.0]);
var p4 = board.create('point', [1.0, 4.0]);

var pol = board.create('polygon', [p1, p2, p3, p4]);


				
				
var p = [[0.0, 2.0], [2.0, 1.0], [4.0, 6.0], [1.0, 3.0]];

var pol = board.create('polygon', p, {hasInnerPoints: true});




				
				
  var f1 = function() { return [0.0, 2.0]; },
      f2 = function() { return [2.0, 1.0]; },
      f3 = function() { return [4.0, 6.0]; },
      f4 = function() { return [1.0, 4.0]; },
      cc1 = board.create('polygon', [f1, f2, f3, f4]);
      board.update();





				
				
var t = board.create('transform', [2, 1.5], {type: 'scale'});
var a = board.create('point', [-3,-2], {name: 'a'});
var b = board.create('point', [-1,-4], {name: 'b'});
var c = board.create('point', [-2,-0.5], {name: 'c'});
var pol1 = board.create('polygon', [a,b,c], {vertices: {withLabel: false}});
var pol2 = board.create('polygon', [pol1, t], {vertices: {withLabel: true}});





				
                

				


			

			


			
				

    				 Attribute Detail
				

				
					 
					


					{Line}
					borders

					

					

						Attributes for the polygon border lines.
						
							

							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
							

							

						

					

				
					 
					


					{Boolean}
					highlightByStrokeWidth

					

					

						By default, the strokewidths of the borders of a polygon are not changed during highlighting (only strokeColor and strokeOpacity are changed
to highlightStrokeColor, and highlightStrokeOpacity).
However, strokewidth is changed to highlightStrokewidth if an individual border gets the focus.


With this attribute set to true, also the borders change strokeWidth if the polygon itself gets the focus.
						
							

							Defined in:  options.js.
						
						
					


					

						
						
						
						
							

							
Default Value:

							

								false
							

							

						

					

				
					 
					


					{Label}
					label

					

					

						Attributes for the polygon label.
						
							

							Defined in:  options.js.
						
						
					


					

						
						
						
						

					

				
					 
					


					{Point}
					vertices

					

					

						Attributes for the polygon vertices.
						
							

							Defined in:  options.js.
						
						
					


					

						
						
						
						

					

				
					 
					


					{Boolean}
					withLines

					

					

						Is the polygon bordered by lines?
						
							

							Defined in:  options.js.
						
						
					


					

						
						
						
						
							

							
Default Value:

							

								true
							

							

						

					
				
			


			


			


			

			


			
                
                

                    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.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.Polygon: 
addPoints, Area, boundingBox, findPoint, getTextAnchor, hasPoint, hideElement, insertPoints, intersect, L, Perimeter, pnpoly, remove, removePoints, setPositionDirectly, showElement, sutherlandHodgman, updateRenderer
Methods borrowed from class JXG.GeometryElement: 
_set, addChild, addDescendants, addParents, addParentsFromJCFunctions, addRotation, addTicks, addTransform, animate, bounds, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, formatNumberLocale, fullUpdate, generatePolynomial, getAttribute, getAttributes, getLabelAnchor, getName, getParents, getProperty, getSnapSizes, getType, handleSnapToGrid, hide, noHighlight, normalize, prepareUpdate, removeAllTicks, removeChild, removeDescendants, removeTicks, resolveShortcuts, setArrow, setAttribute, setDash, setDisplayRendNode, setLabel, setLabelText, setName, setParents, setPosition, setProperty, show, snapToPoints, update, 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 15:44:16 GMT+0200 (Mitteleuropäische Sommerzeit)