[GRASS5] [bug #1950] (grass) v.in.dxf occasionally fails to read LINE and other entities

Radim Blazek blazek at itc.it
Wed Jun 18 12:08:14 EDT 2003

On Wednesday 18 June 2003 17:52, John Gillette wrote:
> > Examining the source code for v.in.dxf/find_lines.c (I
> > encountered this problem with GRASS 5.0.0, but the source
> > code for 5.0.2 is the same), I noted that find_lines.c
> > expects all LINE and similar entities to be contained within
> > the ENTITIES section of a dxf file.  However, the dxf format
> > allows entities to appear within the BLOCKS section as well
> > (cf.: www.relief.hu/h_dxf12.html).  Any lines defined outside
> > the ENTITIES section will apparently be missed.
> >
> > I've tried one workaround ...
> [snip]
> Taking a quick look at the above referenced dxf site and
> knowing a little about dxf, I think the problem is bigger
> than just reading the BLOCKS section.  It seems to me that
> one must store the entity defined in the block section and
> be prepared to insert, scale and rotate the stored block
> (possibly multiple times) when it is later referenced in the
> ENTITIES section.

I hope that this is done in v.in.dwg/5.1, at least I attempted
to handle this (recursive for AD_ENT_INSERT, transformation
for all levels).


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