1e2dd3eefc
- IFC: use smart pointers to keep STEP-SELECT entities in the converted output data structures. This allows us to free the original parameter tuples early as ownership of their members can be transferred. This cuts down memory overhead to 8x (assuming a typical x64 builds) and reduces loading time on average by ~5% as measured on my system.
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git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1019 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-31 14:23:43 +00:00
15565c4858
# IFC: fix potential crash during merging of polygon boundaries
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git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1016 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-30 21:04:11 +00:00
bf7b1d3514
# IFC: track references only for the types for which we actually need reverse indices. On average, this results in a 10% reduction in memory usage and a 5% speed improvement.
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git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1014 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-30 15:38:48 +00:00
d467b5bb27
# improve robustness of IFC loader: filter out duplicate points, adjacent colinear edges, silently ignore zero-vertex polygons. fix various small bugs and improve numeric stability of some code segments.
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- workaround: silently drop very small nested polygon boundaries to avoid cases where a large polygon brep (i.e. a slab) has extremely holes that are so extremely small in comparison to the dimensions of the outer polygon that the resulting numeric accuracies make the triangulation fail. I guess the ultimate solution would be a delauney triangulator with extremely high numeric stability, however this is difficult to achieve.
git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1009 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-29 19:16:52 +00:00
78b44c3aed
- IFC: slight optimization, take less memory.
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# IFC: try to make normals point outwards, if possible.
# IFC: implement recursive polygon merging, but leave it disabled since it seems to fail on very complicated polygons with multiple, nested boundaries.
git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1007 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-21 15:38:39 +00:00
f522143909
+ IFC: use custom triangulation algorithm to generate walls with openings. Introduce a configuration option to toggle the triangulation implementation.
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# IFC: fix bug in boolean clipping code leading to polygons having undefined normals.
git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1006 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-18 18:08:18 +00:00
bbd7547fff
- Further work on IFC, fix transformations, support non-uniform transformations, optimize loading, use recursive algorithm to resolve holes in polygons, implement CSG logic to generate wall openings. The latter is currently disabled.
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- Triangulation step now automatically drops polygons with an area of zero.
- Add debug preprocessor switch to dump all triangulations to a separate file.
- Refactoring, collect some polygon related functions in a separate header, PolyTools.h
git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1002 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-13 00:52:50 +00:00
cbceae960c
# IFC: forgot to include <iterator>
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git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1000 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-10 20:51:52 +00:00
ee64441305
- IFC: initial implementation of boolean clipping (simple kind of CSG). Currently only supports clipping against unbounded planes.
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git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@999 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-10 15:37:40 +00:00
f64f0446db
- IFC: implement the IfcRevolvedAreaSolid and IfcCircleProfileDef entities. Improve vertical extrusion code.
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git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@998 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-10 12:30:13 +00:00
2907c35641
# IFC: correct some error messages, skip over some unneeded elements (i.e. bounding boxes) automatically with no warnings.
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git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@996 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-09 18:39:13 +00:00
f3ff403a91
# add missing template<> declarations that would screw up gcc
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git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@995 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-09 18:03:55 +00:00
c55509132b
- IFC: implement automatic conversion from polygons with holes to polygons that consist of only one piece and are thus applicable to triangulation by ear-cutting. This solves many of the broken windows that would fall victim to z-fighting in earlier revisions.
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- IFC: reduce logging overhead
- Move parts of IFC and BLENDs logging code to a shared implementation.
git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@994 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-09 18:00:55 +00:00
95e0148f95
- IFC: directly keep a pointer to the class name in STEP::Object. This avoid hacking around with typeid().name(), which yields platform-dependent results.
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git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@992 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-08 20:08:28 +00:00
a283c2ef91
# IFC: drop rt flag for opening the file stream
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git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@989 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-07 23:41:17 +00:00
f3bd6ac49b
# use a more or less heuristic approach to fix the face winding order automatically. Overall things look much better now and normals are 100% right for most models.
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git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@987 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-07 20:53:51 +00:00
50b780e21e
# work on IFC face winding, but the extensive use of mirroring in IFC screws things up. Add a documentation node that one should better render them with bf culling turned off.
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git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@985 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-07 16:57:58 +00:00
4116ec7a6a
# fix global orientation for IFC models
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git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@983 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-07 13:14:56 +00:00
1400ae79e7
+ add first prototype version of the IFC-STEP loader. Loads many test models fine but does not support some of the more sophisticated format features.
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git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@979 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-05-06 23:55:38 +00:00
aramis_acg