JSXGraph Reference
ElementsElement Midpoint
JXG.GeometryElement
↳ JXG.Point
↳ Midpoint
The midpoint element constructs a point in the middle of two given points.
Defined in: composition.js.
Extends
JXG.Point.
| Constructor Attributes | Constructor Name and Description |
|---|---|
|
A midpoint is given by two points.
|
- Methods borrowed from class JXG.Point:
- _anim, addConstraint, addTransform, Dist, free, handleAttractors, handleSnapToGrid, handleSnapToPoints, hasPoint, makeGlider, moveAlong, moveTo, normalizeFace, popSlideObject, remove, setGliderPosition, setPosition, setPositionByTransform, setPositionDirectly, setStyle, update, updateConstraint, updateGlider, updateGliderFromParent, updateRenderer, updateTransform, visit, X, XEval, Y, YEval, Z, ZEval
- 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, 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
Midpoint
A midpoint is given by two points. It is collinear to the given points and the distance
is the same to each of the given points, i.e. it is in the middle of the given points.
-
This element has no direct constructor. To create an instance of this element you have to call JXG.Board#create
with type "midpoint".
- Possible parent array combinations are:
-
{JXG.Point} p1
{JXG.Point} p2
- The constructed point will be in the middle of p1 and p2.
-
{JXG.Line} l
- The midpoint will be in the middle of JXG.Line#point1 and JXG.Line#point2 of the given line l.
- Throws:
- {Error}
- If the element cannot be constructed with the given parent objects an exception is thrown.
- Examples:
// Create base elements: 2 points and 1 line
var p1 = board.create('point', [0.0, 2.0]);
var p2 = board.create('point', [2.0, 1.0]);
var l1 = board.create('segment', [[0.0, 3.0], [3.0, 3.0]]);
var mp1 = board.create('midpoint', [p1, p2]);
var mp2 = board.create('midpoint', [l1]);
Attributes borrowed from other Elements
- Attributes borrowed from class JXG.Point:
- attractorDistance, attractors, face, showInfobox, size, snapToPoints, snatchDistance, style
- Attributes borrowed from class JXG.GeometryElement:
- dash, draft, fillColor, fillOpacity, fixed, frozen, highlight, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, needsRegularUpdate, scalable, shadow, strokeColor, strokeOpacity, strokeWidth, trace, traceAttributes, visible, withLabel
Fields borrowed from other Elements
- Fields borrowed from class JXG.Point:
- coords, group, needsUpdateFromParent, onPolygon, position, slideObjects, snapSizeX, snapSizeY, snapToGrid
- 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.Point:
- _anim, addConstraint, addTransform, Dist, free, handleAttractors, handleSnapToGrid, handleSnapToPoints, hasPoint, makeGlider, moveAlong, moveTo, normalizeFace, popSlideObject, remove, setGliderPosition, setPosition, setPositionByTransform, setPositionDirectly, setStyle, update, updateConstraint, updateGlider, updateGliderFromParent, updateRenderer, updateTransform, visit, X, XEval, Y, YEval, Z, ZEval
- 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, removeChild, removeDescendants, resolveShortcuts, setArrow, setAttribute, setDash, setLabelText, showElement, triggerEventHandlers
Events borrowed from other Elements