[Bf-python] Scale in object_mode loss edges length

[Daniel Salazar - patazstudio.com]

My gawd why don't you apply the scale of the object?
Daniel Salazar
patazstudio.com


On Sun, Apr 5, 2015 at 10:40 AM, Giuseppe De Marco <demarcog83 at gmail.com> wrote:
> Hi all,
>
> I realized that an addon that I wrote wasn't so usefull as I tought in
> the past, when I learned blender more in the deep I understand other
> way to get it where's needed.
>
> https://developer.blender.org/T43586
>
> But there's a criticity in Blender, even in the last release.
> If I scale a mesh in object mode it changes its dimensions but the
> edit attributes, as edges length, remains the same !
>
> This is the nightmare of every CAD users. They could kill for this...
> I have to get a workaround because my life is in danger when I try to
> explain this criticity to them.
>
> Now I'm coding an addon that intercepts the S keypress in objectmode
> to drive it in edit mode - do the things - and then return in object
> mode, this because only if we scale in edit_mode the edges length
> updates its values as expected.
>
> I've a problem and I'm loosing my self in the API, so my question is:
>
> how to simulate S keypress in blender ?
> I don't need the bpy.ops.transform.resize(), I need the mouse
> interaction to set new dimensions.
> What I have to call to see it on the screen ? I mean the dotted line
> linked to the origin of the mesh and the mouse movements that sets in
> realtime the dimension of the mesh.
>
> this is the code:
>
>
> <code>
>
> class ForceScale_EditMode(bpy.types.Operator):
>     bl_idname = 'object.force_scale_edit'
>     bl_label  = 'force_scale_edit'
>     bl_description = bl_info['description']
>     #bl_options = {'REGISTER', 'UNDO'}
>
>
>     def execute(self, context):
>         self.report({'INFO'}, 'executed')
>         # force to go in edit mode
>         bpy.ops.object.mode_set(mode = 'EDIT')
>
>         # selects all vertices
>         bpy.ops.mesh.select_all(action="SELECT")
>
>         # call the scale trigger to play with mouse
>         # unknow function /event / whatever :(
>
>        # if scale committed returns in object_mode and then finish
>        # else: return to object_mode.
>
>         return {'FINISHED'}
>
> </code>
>
> any hint would be helpfull
> cheers
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