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canvas::edit::quadrilateral - Editing a quadrilateral on a canvas

Table Of Contents


package require Tcl 8.5
package require Tk 8.5
package require canvas::edit::points ?0.1?
package require canvas::edit::quadrilateral ?0.1?

::canvas::edit quadrilateral objectName canvas options...
objectName destroy
objectName enable
objectName disable
objectName active
objectName add x y
objectName clear
createCmd canvas x y
highlightCmd on canvas item
highlightCmd off canvas state
dataCmd editorObj coordinates


This package provides a class whose instances handle the editing of a quadrilateral on a canvas. Instances can be configured with regard to the visual appearance (regular, and highlighted) of vertex markers. Note that instances do not store the edited quadrilateral themselves, but delegate this to a configurable object.

Class API

Instance API

Instances of the quadrilateral editors provide the following API:


The class command accepts the following options

Bugs, Ideas, Feedback

This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category canvas of the Tklib Trackers. Please also report any ideas for enhancements you may have for either package and/or documentation.


canvas, concave, convex, editing, non-convex, quadrilateral