* Added virtual qualifier to a few destructors in subclasses.
* Removed a few empty destructors that didn't need to be explicitly defined.
* Fixed a few typos
* Removed unnecessary empty virtual destructors in some classes with parent's who derrived from a class with a virtual destructor
When the detail mesh sampling sees an unset height it previously tried
to recover by looking for heights of neighbors. When the heightfield was
not eroded this recovery would fail since the contour simplification
could mean that the nearest valid cell was further away than a neighbor.
We now walk adjacent cells in a spiral to find a height and do this
depending on the max simplification error.
Fix#153
This changes the detail sampling to find height data by using the flood
fill method for polygons that were merged because of a border vertex
removal. This could potentially cause overlapping polygons to receive
the same region IDs which would later make the fast-path sampling in
getHeightData sample the wrong heights.
Also includes optimizations for this path and getHeightData itself.
Previously the seeding was responsible for 25% of the total time spent
in getHeightData in these cases. We now use the direction and prefer
moving directly towards the center of the polygon. This makes the
overhead of seedArrayWithPolyCenter virtually nonexistent (~2%
according to profiling).
Fix#146
I'm not sure if C++ vars are scoped into {} blocks, but in ported code that is an issue. It's easier to have vars names unique. Does not harm anyone I guess? ;-)
- do circumCircle calculations relative to first vertex for adde
precision
- improved the results of triangulateHull(), produces less degen
triangles
- fixed case with contour merging when outline is null
- added layer based heighfield partitioning
- the method is a bit slower than monotone partitioning, but does not
suffer from the long thin ploys
- the method partitions the heighfield into non-overlapping areas, but
does not try to resolve holes
- improved contour hole merging so that it can properly handle all
kinds of holes
- improved polygon triangulation to handle overlapping segments
- improved small and long polygon detail mesh generation
- updated samples to include all 3 partition methods and little
documentation to help to choose between them
can add the same point twice consecutively (interpolation+adding the point).
Rather than raising the buffer I rewrote divPoly to avoid adding the same point twice.
1. Triangle rasterization: replaced loops over all the grid cells of the AABB with looping over the area of the triangle itself (i.e. bounds are set per row).
2. Region expansion: instead of sweeping through all the cells at each expandRegion() and finding the right level - sweep once per few levels and divide among several stacks. Left over are appended.
