Hi Dave,
I successfully ran your OccLib script (0.2). Here are my first feelings:
- The shapeTypeString(shapetype) function is very convenient and could
be added to the Topology module,
- The dumpTopology function is a good idea although it's a bit redundant
with existing WriteToString method of TopoDS_Shape (the one used for
pickling),
- Why don't you use the builtin wxDisplay.py?
- 'slice' is a python buildit type. It should not be used, in my
opinion, as a name for a method of the class 'Slicer' (line 218),
- you create a 'Point' class with a isSame method. I suggest you use the
builtin gp_Pnt2d class and the IsEqual() method, that actually do the
same thing:
""">>> help(P.IsEqual)
Help on method gp_Pnt2d_IsEqual in module OCC._gp:
gp_Pnt2d_IsEqual(...) method of OCC.gp.gp_Pnt2d instance
gp_Pnt2d_IsEqual(gp_Pnt2d self, gp_Pnt2d Other, Standard_Real
LinearTolerance) -> Standard_Boolean
"""
Is the produced SVG file readable with a SVG viewer? What is the next
step of your project?
Best Regards,
Thomas
Dave Cowden a écrit :
> Thanks Thomas. I'd appreciate the feedback. I think you'll be
> underwhelmed-- it doesnt really do anything more than your slicers
> do. It does produce a kind of cool svg file, but the files' not
> particularly impressive either.
>
>
>
> On Mon, May 18, 2009 at 12:59 AM, Thomas Paviot <[email protected]
> <mailto:[email protected]>> wrote:
>
> Hi Dave,
>
> Such a good news that you achieved your slice application. Thanks for
> sharing your cade, I'll test it in a few hours!
>
> Thomas
>
> Cowdens a écrit :
> > Hello, everyone:
> >
> > I have finally finished a halfway decent implementation of my
> slicer,
> > and posted it on the wiki here:
> >
> > http://www.pythonocc.org/wiki/index.php/DavesSlicerProject
> >
> > Thank you to Jelle and Thomas for their help.
> >
> > This script will accept a STEP or STL file, and slice it into
> > layers. This script is not very impressive for those familiar with
> > Occ, especially since there is already some slicer code out
> there. It
> > does have a few interesting features, though:
> >
> >
> > * It uses solid operations (BrepAlgoAPI_Cut ) intead of
> > BRepAlgoAPI_Section. this runs more slowly, but makes it
> easier
> > operate on the resulting shape as a solid. i believe this
> will
> > be useful later, for example so that i can compute the
> volume of
> > the resulting solid , etc.
> > * It produces a 'slice' file format that is compatible with
> a very
> > elaborate set of python scripts used by Reprappers to create
> > toolpaths for the slice. This format is based on SVG-- it has
> > the unique and interesting property that the file is both
> human
> > viewable, and machine readable.
> > * Most of the code in this example does the task of converting a
> > face to an svg path element-- a non-trivial amount of code
> as it
> > turns out
> >
> > I hope to include this code into a modified version of
> > interactiveViewer, which could be the basis for a very good quality
> > rapid prototyping tool.
> >
> > If you are interested, here's the forum where i posted the tool for
> > the use by Reprappers:
> >
> > http://forums.reprap.org/read.php?12,20013,23357
> >
> > There is much work left, but for now it has succeeded in letting me
> > slice STEP and really bad STL files, and then successfully generate
> > toolpaths for use on a Reprap machine
> >
> >
> >
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> >
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