JXG.Ticks

_isInsideCanvas(x, y, mopt) → {Boolean}

Check if (parts of) the tick is inside the canvas. The tick intersects the boundary at two positions: [x[0], y[0]] and [x[1], y[1]] in screen coordinates.

Parameters

Returns

Type

Boolean

Details

Source

base/ticks.js, line 1111

beautifyScientificNotationLabel(labelText) → {String}

Formats label texts to make labels displayed in scientific notation look beautiful. For example, label 5.00e+6 will become 5•10⁶, label -1.00e-7 will become into -1•10⁻⁷

Parameters

Returns

Type

String

Details

Source

base/ticks.js, line 1378

(private) calculateTicksCoordinates()

(Re-)calculates the ticks coordinates.

Details

Source

base/ticks.js, line 337

(private) createTickPath(coords, major) → {Array}

Parameters

Returns

Type

Array

Details

Source

base/ticks.js, line 1132

(private) formatLabelText(value) → {String}

Format label texts. Show the desired number of digits and use utf-8 minus sign.

Parameters

Returns

Type

String

Details

Source

base/ticks.js, line 1305

(private) generateEquidistantTicks(coordsZero, bounds)

Creates ticks coordinates and labels automatically. The frequency of ticks is affected by the values of JXG.Ticks#insertTicks, JXG.Ticks#minTicksDistance, and JXG.Ticks#ticksDistance

Parameters

Details

Source

base/ticks.js, line 714

(private) generateFixedTicks(coordsZero, bounds)

Creates ticks coordinates and labels based on JXG.Ticks#fixedTicks and JXG.Ticks#labels.

Parameters

Details

Source

base/ticks.js, line 1002

(private) generateLabelData(labelText, tick, tickNumber) → {Object}

Create a tick label data, i.e. text and coordinates

Parameters

Returns

Type

Object

Details

Source

base/ticks.js, line 1451

(private) generateLabelText(tick, zero, value) → {String}

Creates the label text for a given tick. A value for the text can be provided as a number or string

Parameters

Returns

Type

String

Details

Source

base/ticks.js, line 1425

(private) getDistanceFromZero(zero, point) → {Number}

Calculates the signed distance in user coordinates from zero to a given point. Sign is positive, if the direction from zero to point is the same as the direction zero to point2 of the line.

Parameters

Returns

Type

Number

Details

Source

base/ticks.js, line 680

(private) getDistanceMajorTicks()

Calculates the distance between two major ticks in user units.

• If the attribute Ticks#insertTicks is false, the value of the attribute Ticks#ticksDistance is returned. The attribute Ticks#minTicksDistance is ignored in this case.
• If the attribute Ticks#insertTicks is true, the attribute Ticks#ticksDistance is ignored.

The distance between two major ticks is computed as \(a 10^i\), where \(a\) is one of \({1, 2, 5}\) and the number \(a 10^i\) is maximized such that there are approximately 6 major ticks and there are at least Ticks#minTicksDistance pixel between minor ticks. The latter restriction has priority over the number of major ticks.

Returns

Details

Source

base/ticks.js, line 812

(private) getLowerAndUpperBounds(coordsZero) → {String|Object}

Calculate the lower and upper bounds for tick rendering. If JXG.Ticks#includeBoundaries is false, the boundaries will exclude point1 and point2.

Parameters

Returns

• [type] If type=='ticksdistance', the bounds are the intersection of the line with the bounding box of the board, respecting the value of the line attribute 'margin' and the width of arrow heads. Otherwise, it is the projection of the corners of the bounding box to the line - without the attribute 'margin' and width of arrow heads.
  The first case is needed to determine which ticks are displayed, i.e. where to stop. The second case is to determine the distance between ticks in case of 'insertTicks:true'.

  Type

  String

• {lower: Number, upper: Number } containing the lower and upper bounds in user units.

  Type

  Object

Details

Source

base/ticks.js, line 541

(private) getXandYdeltas() → {Object}

Calculates the x and y distances in user coordinates between two units in user space. In essence, these are cosine and sine. The only work to be done is to determine the direction of the line.

Returns

Type

Object

Details

Source

base/ticks.js, line 1072

(private) getZeroCoordinates() → {JXG.Coords}

Returns the coordinates of the point zero of the line.

If the line is an Axis, the coordinates of the projection of the board's zero point is returned

Otherwise, the coordinates of the point that acts as zero are established depending on the value of JXG.Ticks#anchor

Returns

Type

JXG.Coords

Details

Source

base/ticks.js, line 462

hasPoint(x, y) → {Boolean}

Checks whether (x,y) is near the line. Only available for line elements, not for ticks on curves.

Parameters

Returns

Type

Boolean

Details

Overrides

JXG.GeometryElement#hasPoint

Source

base/ticks.js, line 216

(private) processTickPosition(coordsZero, tickPosition, ticksDelta, deltas)

Auxiliary method used by JXG.Ticks#generateEquidistantTicks to create a tick in the line at the given tickPosition.

Parameters

Details

Source

base/ticks.js, line 937

setPositionDirectly(method, coords, oldcoords) → {JXG.Ticks}

Sets x and y coordinate of the tick.

Parameters

Returns

Type

JXG.Ticks

Details

Overrides

JXG.GeometryElement#setPositionDirectly

Source

base/ticks.js, line 297

(private) setTicksSizeVariables()

Sets the variables used to set the height and slope of each tick.

Details

Source

base/ticks.js, line 395

update() → {JXG.Ticks}

Recalculate the tick positions and the labels.

Returns

Type

JXG.Ticks

Details

Overrides

JXG.GeometryElement#update

Source

base/ticks.js, line 1481

updateRenderer() → {JXG.Ticks}

Uses the boards renderer to update the arc.

Returns

Type

JXG.Ticks

Details

Overrides

JXG.GeometryElement#updateRenderer

Source

base/ticks.js, line 1506

(private) updateRendererLabels() → {JXG.Ticks}

Updates the label elements of the major ticks.

Returns

Type

JXG.Ticks

Details

Source

base/ticks.js, line 1532