SVG_Define_marker

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4D v16

SVG_Define_marker


SVG_Define_marker ( parentSVGObject ; id {; x ; y {; width ; height {; orientation}}} ) -> Funktionsergebnis

Parameter	Typ	Beschreibung
parentSVGObject	SVG_Ref	Reference of parent element
id	String	Name of symbol
x	Lange Ganzzahl	Coordinate on X axis of reference point
y	Lange Ganzzahl	Coordinate on Y axis of reference point
width	Lange Ganzzahl	Width of marker
height	Lange Ganzzahl	Height of marker
orientation	Lange Ganzzahl	Orientation of marker
Funktionsergebnis	SVG_Ref	Reference of marker

Beschreibung

The SVG_Define_marker command creates a marker in the SVG container designated by parentSVGObject and returns its reference. If parentSVGObject is not an SVG document, an error is generated.

A marker object is used to draw an arrow or multiple markers (the points of a curve for example). A marker will be attached to an SVG element with the SVG_SET_MARKER command.

The id parameter specifies the name of the marker. The name will be used to associate a marker with an object. If an element with the same name exists, it will be replaced.

The optional x and y parameters specify the coordinates of the reference point that must line up exactly with the marker position.

The optional width and height parameters specify the width and height of the rendered rectangle.

The optional orientation parameter can be used to adjust the orientation of the marker. A value included between 0 and 360 represents the angle between the X axis of the marker and that of the user space. If this parameter is omitted or if its value does not fall in the 0 - 360 interval, the placement will be calculated automatically by the rendering engine according to the object.

Beispiel

Refer to the example of the SVG_SET_MARKER command.

Siehe auch

SVG_SET_MARKER