Michaël Michaud <[EMAIL PROTECTED]> ha scritto: Hi Peppe,
I read your page about CAD. Good documentation !
Here are some propositions to be more precise about what the driver can
do and what it cannot :
- subset of supported geometries features (ex. POINT, POLYLINE..., I'll
check that)
- list of dxf feature attributes imported (COLOR, THICKNESS..., see the
schema of an imported dxf file)
- more precise description of how polylines are imported : the DXF
"closed" field is used to know if geometries have to be imported as
polygons or as polylines. This way the parser can make a difference
between a closed line (a polyline with identical first and last points
but without the closed dxf attribute) and a polygon (a closed polyline
with the closed attribute) : to test it, you can draw a polygon and a
closed polyline in jump, export it in dxf and import it back into jump.
- we should also write that the plugin is able to "export" DXF files
<I have to other tests, right now I tested your plugin on some dwg -
Aereophotogrammetric - with a huge variability of geometries.
Your right, as soon as possible I will write about dxf export and the usage.
I am also very interested abou how to link databases to original derived DXF
topographic maps: the reason is that the majority of public administration
Italian offices works only with CAD>
from OpenJUMP, even if this is less useful than importing cad drawings.
- I did not test all the dxf version you considered (8 to 14/2002). Hope
that works. The driver is based on an old version of DXF specification
(10 or 12, don't remember exactly). Most of new features are simply
ignored. One major limitation is about local coordinates : if some
objects in the drawing are described in a local coordinate system, the
parser will ignore that and use them as if they were absolute coordinates.
I read attributes such as color and thickness as normal jump attributes
because basically, a jump driver read geometries and attributes, not styles.
But reading your paper, I thought that it should not be too difficult to
write a script which can apply styles to dxf-layers using their
dxf-attributes (I'll give this a try)
<latest Skyjump has a new way to define colours br attribute and value (R_G_B
and codes) it would be interesting to ask Larry how it works in order to port
it in OJ (if Larry agrees) and if it could be used in dxf driver>
<Thanks Michael for your Job.
BTW The time you want to start an upgrade version of DXF driver I wll be glad
to help, considering my limitation as developer>
Peppe
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