kicad-developers team mailing list archive

[Cirilo Bernardo <cirilo.bernardo@xxxxxxxxx>]

Hi Mario,

 OCE has 2 basic form control parameters used in the tesselation:
deflection and deflectionAngle. These control the number of segments
in an arc and the max. error in NURBS surfaces. There are probably
a few more tolerance parameters but I don't know OCE well enough.

 Configuring plugin parameters is something I haven't addressed yet.
I can add a function to the plugin interface to ask kicad for the 3D
configuration directory and individual plugins can write default
configurations there, but in this case users need to read documentation
so they can adjust those parameters if necessary. Anyway, that would
be a good first step and in the future we might be able to add GUIs
for this task. Many plugins would require no configuration though and
the few that do wouldn't have many parameters. Since we don't
expect an overwhelming number of plugins, perhaps each class of
plugin (at the moment there is only the one class - 3DPlugin) could
have a single configuration file which holds the parameters for each
plugin type. Anyway, at the moment there is no urgent need for such
configuration since the defaults work well anyway. :)

- Cirilo


On Thu, Mar 10, 2016 at 8:57 PM, Mário Luzeiro <mrluzeiro@xxxxx> wrote:

> Excellent progress!
>
> I believe it will need some discussion on how to integrate the dependency
> on OCE but hope a good compromise could be found.
> It is good however that we got something to discuss.
>
> What options does OCE offer you when convert the STEP to triangles? (i.e:
> on relation to quality/ detail of tesselation, materials, etc ?)
>
> Mario
> ________________________________________
> From: Kicad-developers [kicad-developers-bounces+mrluzeiro=
> ua.pt@xxxxxxxxxxxxxxxxxxx] on behalf of Cirilo Bernardo [
> cirilo.bernardo@xxxxxxxxx]
> Sent: 10 March 2016 09:13
> To: KiCad Developers
> Subject: Re: [Kicad-developers] 3D plugin for STEP/IGES via OCE
>
> Sorry, I doubled up on a link and missed the HackRF link:
>
> https://drive.google.com/open?id=0By_XTJN-s8aXaTJidzZzOUhxWEk
>
> - Cirilo
>
> On Thu, Mar 10, 2016 at 8:11 PM, Cirilo Bernardo <
> cirilo.bernardo@xxxxxxxxx<mailto:cirilo.bernardo@xxxxxxxxx>> wrote:
> Hi folks,
>
>  I have a 3D plugin built to support STEP and IGES visualization via OCE
> and have linked 3 screenshots below.
>
> https://drive.google.com/open?id=0By_XTJN-s8aXS1pKSE5uNVp0VG8
> https://drive.google.com/open?id=0By_XTJN-s8aXclV4enBueWhnaGM
> https://drive.google.com/open?id=0By_XTJN-s8aXclV4enBueWhnaGM
>
>  The HackRF STEP model was created by Maurice via his KiCad StepUP
> tools for FreeCAD.
>
>  If people would like this plugin to be pushed into 3d_initial_merge then
> let me know; I would need to add a CMake option to build it since it
> depends on OCE and should not be built by default. Just remember that
> these models will not be visible in 3DViewer until the current 3DViewer
> has been replaced by one which uses the scenegraph objects from
> 3d_initial_merge.  Mario is making a lot of progress with his 3DViewer
> branch, so hopefully it won't be too long before we have all the latest
> 3D visualization codes. :)
>
>  One note: although the new 3D viewer will be able to directly use the
> STEP/IGES models (no need to convert to VRML), actual MCAD
> exports is still a long way away since it depends on the implementation
> of a plugin system for reading and manipulating the PCB data itself.
>
>  Thanks to Tom Wlostowski for the initial OCE investigations and his
> sample c++ code for converting STEP to VRML.
>
> - Cirilo
>
>
>