Commit Graph

7 Commits (edd1e2e99a15585b601cbde3b6cc4597403698d6)

Author SHA1 Message Date
aramis_acg edd1e2e99a # Ifc: re-introduce the previous triangulation code algorithm, but use Clipper to clip to the outer contour line and poly2tri as fallback.
# Ifc: fix a issue when closing window contours. Sometimes a corner would be left out.

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1122 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2012-01-17 17:40:15 +00:00
aramis_acg ab6c348c2d # Ifc: if generating wall openings fails, revert to the original wall rather than leaving polygon crap.
git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1121 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2012-01-17 02:18:59 +00:00
aramis_acg ad759f6efe - Ifc: use a combination of clipper and poly2tri to triangulate arbitrary polygons with arbitrarily-shaped holes (the former to workaround the cases not supported by the latter ...). Issues with doors et al. (i.e. openings touching the outer contour of a wall polygon) remain and are yet to be solved. Overall, this change should make IfcLoader much more robust, though. Since this means that the previous algorithm to triangulate walls is dropped altogether, regressions are highly likely.
Note 1: there are cases in which the previous algorithm may have produced 'better' triangles, but my big hope is that poly2tri's CDT implementation will implement more advanced refinement algorithms over time.

Note 2: This issue http://code.google.com/p/poly2tri/issues/detail?id=34 is relevant, first versions of my poly2tri embedding would indeed stackoverflow or assert. I somehow avoided this by using Clipper as prepass and scaling the entire polygon to 0..1 range (as recommended).


git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1118 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2012-01-17 01:49:17 +00:00
klickverbot db29c9a20d Spelling fixes, thanks to Jan Dittberner.
This patch replaces »continously« with »continuously« and »treshold« with »threshold«.

(merged from https://github.com/assimp/assimp/pull/2)

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1086 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-11-08 12:15:18 +00:00
aramis_acg a7e43173db git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1046 67173fc5-114c-0410-ac8e-9d2fd5bffc1f 2011-07-17 01:09:56 +00:00
aramis_acg 0276a09a87 # Ifc: fix generation of wall openings, now no longer 'forgets' wall parts.
git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1043 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-07-15 21:51:33 +00:00
aramis_acg 81ad224f84 - IFC: Refactor source to simplify maintenance.
- IFC: rate all available representations by a simple ranking system and take the one that is easiest to load. This should avoid loading the same geometry twice. Also it might result in quality improvements when BRep geometry is avoided in favour of extrusion geometry.
# IFC: Various bugfixes related to geometry loading.


git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1033 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2011-06-14 15:58:22 +00:00