mirror of
https://github.com/UberGames/GtkRadiant.git
synced 2024-11-28 14:42:02 +00:00
a36b39a62b
trunk. Branch Rambetter-math-fix-experiments can be deleted now. git-svn-id: svn://svn.icculus.org/gtkradiant/GtkRadiant/trunk@417 8a3a26a2-13c4-0310-b231-cf6edde360e5
16 lines
877 B
Text
16 lines
877 B
Text
DESCRIPTION OF PROBLEM:
|
|
=======================
|
|
|
|
Because of the coarse nature of SnapNormal(), planes that are 0.25 degrees
|
|
away from being axial are "snapped" to be axial. The "normal epsilon"
|
|
is a very small value by default, and cannot go much smaller (without
|
|
running into limits of floating point numbers). The problem with
|
|
SnapNormal() is that we compare the components of the normal that are near
|
|
1, instead of comaring the components that are near 0. This leads to a very
|
|
coarse and inaccurate SnapNormal().
|
|
|
|
If you open the example map in Radiant, you can see that the red brick should
|
|
touch the middle checkered brick at the edge. However, once this map is
|
|
compiled, the edges are a significant distance apart. This is due to the
|
|
coarse and inaccurate nature of SnapNormal(). Likewise, the green brick should
|
|
be flush with the center tiled brick, but it's not.
|