Selection of nodes to fill field of tree

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tiago_valente
Posts: 7
Joined: Wed May 18, 2022 10:16 am

Selection of nodes to fill field of tree

Post by tiago_valente »

I want to fill a field of data tree with the number of a point in the geometry. Is it possible to add an <edit_command> to call a function to select a point using the graphical interface?

Here is what I was trying to do, but was unable to find a tcl function to call a pick point selection:

<value n="point1" pn="N. point 1" help="Number of the point in the geometry to attribute the value 1 of the load" >
<edit_command n="select_points" pn="Select Points" proc="ProcSelectPoint"/>
</value>

<proc n='ProcSelectPoint' args='args'>
<![CDATA[
SpdAux::ProcSelectPoint $domNode $args
]]>
</proc>

proc SpdAux::ProcSelectPoint {domNode args} {

}

Best regards
Tiago Valente
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escolano
Posts: 1804
Joined: Sun Sep 05, 1982 10:51 pm

Re: Selection of nodes to fill field of tree

Post by escolano »

There is in <GiD>scripts/dev_kit.tcl a procedure to facilitate the selection of GiD entities.
proc GidUtils::PickEntities { type selectmode {message {}}}
(see the comment on this file to see its arguments)

e.g.
set id [GidUtils::PickEntities Points single [= "Pick a geometry point"]]
W "the point id is $id"

On the other hand, I think that is not a good idea to add to the customLib tree an item to be filled with the id of a point. The normal way to do it probably is to use a condition that is related to a group name, and add to this group the points you want.

In any case, if do you want to implement your approach, is possible to do something like this:
In the file <problemype>.spd

Code: Select all

<container n="Points_of_loads" pn="Points of loads">
    <value n="point1" pn="N. point 1" v="" string_is="integer_or_void" help="Number of the point in the geometry to attribute the value 1 of the load">
      <edit_command n="select_points" pn="Select Points" proc="MyProcSelectPoint %W" icon="point"/>
    </value>
</container>
and in the file <problemtype.tcl> define this procedure
(it is possible to embed the proc in the xml definition, and the the arguments are implicit, but is better to edit and debug to define the Tcl code in a Tcl file)

Code: Select all

proc MyProcSelectPoint { dom_node } {
    set my_dict ""
    set id [GidUtils::PickEntities Points single [= "Pick a geometry point"]]
    if { $id != "" } {
        set question [$dom_node @n] 
        #Note: in this case we knot that question is 'point1' but this show an use of the dom_node argument
        set my_dict [dict set my_dict point1 $id]
    }
    return [list $my_dict ""]
}
Note: the proc can return a list with a first item that is a dictionary with they - value to be changed in the entry (in this case the key is 'point1' and the value the entity id)
User avatar
escolano
Posts: 1804
Joined: Sun Sep 05, 1982 10:51 pm

Re: Selection of nodes to fill field of tree

Post by escolano »

I have found another way that was not documented (we will document it)
that do something similar, simply declaring the value of fieldtype='vector, dimensions='1', with attribute pick_point='1'

Code: Select all

<container n="some_points" pn="some points">
  <value n="some_point" pn="Some point" fieldtype="vector" dimensions="1" string_is="integer_or_void" pick_point="1" help="To enter a point"/>
</container>
tiago_valente
Posts: 7
Joined: Wed May 18, 2022 10:16 am

Re: Selection of nodes to fill field of tree

Post by tiago_valente »

Thanks for your help.

I was able to implement the solution that you pointed out.

Best regards
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