Element Metapostspline
JXG.GeometryElement
↳ JXG.Curve
↳ Metapostspline
This element is used to provide a constructor for metapost spline curves.
Create a dynamic metapost spline interpolated curve given by sample points p_1 to p_n.
Defined in: curve.js.
Extends
JXG.Curve.
| Constructor Attributes | Constructor Name and Description |
|---|---|
| Field Attributes | Field Name and Description |
|---|---|
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Controls if the data points of the cardinal spline when given as
arrays should be converted into JXG.Points.
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If set to true, the supplied coordinates are interpreted as
[[x_0, y_0], [x_1, y_1], p, .
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Attributes for the points generated by Metapost spline in cases
createPoints is set to true
|
- Methods borrowed from class JXG.Curve:
- addTransform, allocatePoints, generateTerm, getTransformationSource, hasPoint, interpolationFunctionFromArray, maxX, minX, moveTo, notifyParents, update, updateCurve, updateDataArray, updateRenderer, updateTransform, X, Y, Z
- Methods borrowed from class JXG.GeometryElement:
- _set, addChild, addDescendants, addParents, addParentsFromJCFunctions, addRotation, addTicks, animate, bounds, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, eval, evalVisProp, formatNumberLocale, fullUpdate, generatePolynomial, getAttribute, getAttributes, getLabelAnchor, getName, getParents, 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
Metapostspline
-
This element has no direct constructor. To create an instance of this element you have to call JXG.Board#create
with type "metapostspline".
- Possible parent array combinations are:
-
{JXG.Board} board
- Reference to the board the metapost spline is drawn on.
-
{Array} parents
- Array with two entries.
First entry: Array of points the spline interpolates. This can be
- an array of JSXGraph points
- an object of coordinate pairs
- an array of functions returning coordinate pairs
- an array consisting of an array with x-coordinates and an array of y-coordinates
Second entry: JavaScript object containing the control values like tension, direction, curl.
-
{Object} attributes
- Define color, width, ... of the metapost spline
- Returns:
- {JXG.Curve} Returns reference to an object of type JXG.Curve.
- See:
- JXG.Curve
- Examples:
var po = [],
attr = {
size: 5,
color: 'red'
},
controls;
var tension = board.create('slider', [[-3, 6], [3, 6], [0, 1, 20]], {name: 'tension'});
var curl = board.create('slider', [[-3, 5], [3, 5], [0, 1, 30]], {name: 'curl A, D'});
var dir = board.create('slider', [[-3, 4], [3, 4], [-180, 0, 180]], {name: 'direction B'});
po.push(board.create('point', [-3, -3]));
po.push(board.create('point', [0, -3]));
po.push(board.create('point', [4, -5]));
po.push(board.create('point', [6, -2]));
var controls = {
tension: function() {return tension.Value(); },
direction: { 1: function() {return dir.Value(); } },
curl: { 0: function() {return curl.Value(); },
3: function() {return curl.Value(); }
},
isClosed: false
};
// Plot a metapost curve
var cu = board.create('metapostspline', [po, controls], {strokeColor: 'blue', strokeWidth: 2});
Attribute Detail
{Boolean}
createPoints
Controls if the data points of the cardinal spline when given as
arrays should be converted into JXG.Points.
Defined in: options.js.
Defined in: options.js.
- Default Value:
- true
{Boolean}
isArrayOfCoordinates
If set to true, the supplied coordinates are interpreted as
[[x_0, y_0], [x_1, y_1], p, ...].
Otherwise, if the data consists of two arrays of equal length,
it is interpreted as
[[x_o x_1, ..., x_n], [y_0, y_1, ..., y_n]]
Defined in: options.js.
Defined in: options.js.
- Default Value:
- true
{Object}
points
Attributes for the points generated by Metapost spline in cases
createPoints is set to true
Defined in: options.js.
Defined in: options.js.
Attributes borrowed from other Elements
- Attributes borrowed from class JXG.Curve:
- lineCap
- Attributes borrowed from class JXG.GeometryElement:
- aria, cssClass, dash, dashScale, draft, dragToTopOfLayer, element3D, fillColor, fillOpacity, fixed, frozen, gradient, gradientAngle, gradientCX, gradientCY, gradientEndOffset, gradientFR, gradientFX, gradientFY, gradientR, gradientSecondColor, gradientSecondOpacity, gradientStartOffset, highlight, highlightCssClass, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, isLabel, layer, needsRegularUpdate, nonnegativeOnly, precision, priv, rotatable, scalable, shadow, snapToGrid, strokeColor, strokeOpacity, strokeWidth, tabindex, trace, traceAttributes, transitionDuration, transitionProperties, visible, withLabel
Fields borrowed from other Elements
- Fields borrowed from class JXG.Curve:
- dataX, dataY, numberPoints, qdt, ticks
- 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.Curve:
- addTransform, allocatePoints, generateTerm, getTransformationSource, hasPoint, interpolationFunctionFromArray, maxX, minX, moveTo, notifyParents, update, updateCurve, updateDataArray, updateRenderer, updateTransform, X, Y, Z
- Methods borrowed from class JXG.GeometryElement:
- _set, addChild, addDescendants, addParents, addParentsFromJCFunctions, addRotation, addTicks, animate, bounds, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, eval, evalVisProp, formatNumberLocale, fullUpdate, generatePolynomial, getAttribute, getAttributes, getLabelAnchor, getName, getParents, 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