Class Line
Extends
JXG.Line.
This element is used to provide a constructor for a general line. A general line is given by two points. By setting additional properties
a line can be used as an arrow and/or axis.
Defined in: Line.js.
Constructor Attributes | Constructor Name and Description |
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Line(point1,point2, c,a,b, f)
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- Fields borrowed from class JXG.Line:
- defaultTicks, point1, point2, ticks
- Fields borrowed from class JXG.GeometryElement:
- addEvent, ancestors, board, childElements, dash, descendants, draft, dump, elementClass, elType, eventHandlers, fillColor, fillOpacity, fixed, frozen, getAttribute, hasLabel, highlight, highlighted, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, id, isDraggable, isReal, methodMap, mouseover, name, needsRegularUpdate, needsUpdate, notExistingParents, numTraces, quadraticform, removeEvent, scalable, shadow, snapToGrid, stdform, strokeColor, strokeOpacity, strokeWidth, subs, symbolic, trace, traceAttributes, traces, transformations, type, visible, visProp, withLabel
- Methods borrowed from class JXG.Line:
- addTicks, addTransform, getAngle, getRise, getSlope, hasPoint, removeAllTicks, removeTicks, setPosition, setPositionDirectly, X, Y, Z
- Methods borrowed from class JXG.GeometryElement:
- addChild, addRotation, animate, bounds, clearTrace, cloneToBackground, createLabel, getAttributes, getLabelAnchor, getName, getParents, getProperty, getTextAnchor, getType, hideElement, labelColor, noHighlight, off, on, remove, resolveShortcuts, setArrow, setAttribute, setLabelText, setProperty, showElement, triggerEventHandlers, update
- 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
Class Detail
Line(point1,point2, c,a,b, f)
// Create a line using point and coordinates/ // The second point will be fixed and invisible. var p1 = board.create('point', [4.5, 2.0]); var l1 = board.create('line', [p1, [1.0, 1.0]]);
// Create a line using three coordinates var l1 = board.create('line', [1.0, -2.0, 3.0]);
- Parameters:
- {JXG.Point|array|function_JXG.Point|array|function} point1,point2
- Parent elements can be two elements either of type JXG.Point or array of numbers describing the coordinates of a point. In the latter case the point will be constructed automatically as a fixed invisible point. It is possible to provide a function returning an array or a point, instead of providing an array or a point.
- {Number|function_Number|function_Number|function} c,a,b
- A line can also be created providing three numbers. The line is then described by the set of solutions of the equation a*x+b*y+c*z = 0. It is possible to provide three functions returning numbers, too.
- {function} f
- This function must return an array containing three numbers forming the line's homogeneous coordinates.
- Throws:
- {Exception}
- If the element cannot be constructed with the given parent objects an exception is thrown.