Add check for empty triangulation when writing STL file to report error instead of creation of empty file.
STL reader has been improved to properly handle case of empty or small files, and Ascii files without EOL at the end.
STL Reader and Writer tools have been refactored to improve performance and usability:
- Basic reading of STL file is separated to abstract class RWStl_Reader which is not bound to particular data structures; the target data model can be bound via inheritance.
- RWStl package uses class Poly_Triangulation to represent triangular mesh.
- Obsolete data structures and tools (packages StlMesh and StlTransfer) are removed.
Method StlAPI_Writer::Write() is reimplemented to write triangulation directly, without conversion to StlMesh_Mesh.
New DRAW command "tessellate" is added to generate rapidly triangulation of prescribed size (on surface).
Command "tricheck" is protected to deal correctly with triangulation without UV data.
New tests added: perf de bug26338_1 and _2; bugs stlvrml bug26338
Correction of testing environment
Automatic upgrade of OCCT code by command "occt_upgrade . -nocdl":
- WOK-generated header files from inc and sources from drv are moved to src
- CDL files removed
- All packages are converted to nocdlpack
StlTransfer.cxx, function StlTransfer::BuildIncrementalMesh(...) fills the StlMesh_Mesh. Before this fix the StlTransfer always force meshing of the passed shape.
Now meshing is completely removed from the StlTransfer. StlWriter can return error status now, for example, if a mesh of the passed shape is empty. In this case file will be not created.
Added test case bugs/xde/bug25357
Avoid the warning on gcc compiler.
Test scripts were modified according to the fix.
1) bug23192, bug22670, bug23193: removed "isParallel" flag from the command
arguments. Manually meshing of the shape (as far as meshing was removed
from STL writer).
2) bug22898: before the fix writestl always remeshes the shape with a
deflection, related to the boundery box of the shape. For "hammer" shape
there is a 38.9076 deflection for mesh. Differences between before writing
and after reading are dedicated to fact that stl writes triangulation as
an elements of the spahe (like faces, edges etc.)
License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast
Wrong license statements corrected in several files.
Copyright and license statements added in XSD and GLSL files.
Copyright year updated in some files.
Obsolete documentation files removed from DrawResources.
