mirror/glm
1
0
Fork 0
mirror of https://github.com/g-truc/glm.git synced 2024-11-25 18:04:34 +00:00
Code Issues Packages Projects Releases Wiki Activity

axisAngle epsilon changed to work as expected on small angles

Browse Source 
also small refactoring
also single epsilon is used
also passes new axisAngle tests now

Signed-off-by: Sergey Krivohatskiy <s.krivohatskiy@gmail.com>
This commit is contained in:
Sergey Krivohatskiy 2021-03-23 14:28:36 +03:00
parent c9c656ce31
commit df7b5bda7c
1 changed files with 16 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
glm/gtx/matrix_interpolation.inl
View File

@ -2,17 +2,29 @@
#include "../ext/scalar_constants.hpp"
#include <limits>
namespace glm
{
template<typename T, qualifier Q>
GLM_FUNC_QUALIFIER void axisAngle(mat<4, 4, T, Q> const& m, vec<3, T, Q>& axis, T& angle)
{
T epsilon = static_cast<T>(0.01);
T epsilon2 = static_cast<T>(0.1);
T const epsilon =
std::numeric_limits<T>::epsilon() * static_cast<T>(1e2);
if((abs(m[1][0] - m[0][1]) < epsilon) && (abs(m[2][0] - m[0][2]) < epsilon) && (abs(m[2][1] - m[1][2]) < epsilon))
bool const nearSymmetrical =
abs(m[1][0] - m[0][1]) < epsilon &&
abs(m[2][0] - m[0][2]) < epsilon &&
abs(m[2][1] - m[1][2]) < epsilon;
if(nearSymmetrical)
{
if ((abs(m[1][0] + m[0][1]) < epsilon2) && (abs(m[2][0] + m[0][2]) < epsilon2) && (abs(m[2][1] + m[1][2]) < epsilon2) && (abs(m[0][0] + m[1][1] + m[2][2] - static_cast<T>(3.0)) < epsilon2))
bool const nearIdentity =
abs(m[1][0] + m[0][1]) < epsilon &&
abs(m[2][0] + m[0][2]) < epsilon &&
abs(m[2][1] + m[1][2]) < epsilon &&
abs(m[0][0] + m[1][1] + m[2][2] - T(3.0)) < epsilon;
if (nearIdentity)
{
angle = static_cast<T>(0.0);
axis = vec<3, T, Q>(