"External" control point

[AFDesign]

Hi to all,

i can't find the function for activate a "control point" freely movable by user. I'll try to explain better.

I have a linear object, so (in 2D) i have 2 control points for start and finish. I need a third control point, visible in 2D, and i need to know x and y of this point (like the positioning of text in space tool).

How can i do it?

Thanks, and sorry for my english, i hope you understand what i mean.

:blush:

[Miguel Barrera]

You need to add a Control Point parameter to the plugin definition. By default they are named in concecutive order so the first one will be named "ControlPoint01". You can get the x & y location either by calling the constants PCONTROLPOINTO1X & PCONTROLPOINT01Y or through the GetRField procedure with 'ControlPoint01X' & 'ControlPoint01Y' as the field names.

As with any other parameter, the x & y values will be visible in the Object Info Palette (OIP) and to hide it you will need to set the parameter visibility to FALSE.

[AFDesign]

Thanks very much Miguel!

Andrea

[AFDesign]

Is it possible to hide the control point parameter from the "default parameters" showed when I click the tool bar button (attached image)? I can't rename it so in this case I can't use "__name" to hide it, and if I use "SetParameterVisibility" it only hide the parameter from the OIP!

Edited June 13, 2011 by andreavw

[klinzey]

In order to hide the parameters during the preference event the object must be event enabled.

During the preference or setup event you can hide the control using:

PROCEDURE vsoWidgetSetVisible(widgetID : LONGINT; visible : BOOLEAN);

http://developer.vectorworks.net/index.php?title=VS:Parametric_Custom_Shape_Pane

[Miguel Barrera]

Depending on your target version, vsoWidgetSetVisible may not work as it was only resently implemented.

For this reason, I only add the parameters that I want visible in the OIP with

FUNCTION vsoAppendParamWidget( parameterID :LONGINT; text :STRING; data :LONGINT) :BOOLEAN;

which will work with VW 2008 & up.

[AFDesign]

Thank you all!

I make it event enabled; adding parameters by function is too complicated for me !