Mirrors/bx
1
0
Fork 0
mirror of https://github.com/bkaradzic/bx.git synced 2026-02-17 20:52:37 +01:00
Code Issues Packages Projects Releases Wiki Activity

Cleanup.

Browse Source
This commit is contained in:
Branimir Karadžić
2016-05-27 20:27:19 -07:00
parent cf3b2e2d5e
commit bbb1778707
1 changed files with 24 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
include/bx/fpumath.h
View File

@@ -341,6 +341,30 @@ namespace bx
_result[2] = 1.0f / _a[2];
}
inline void vec3TangentFrame(const float* _n, float* _t, float* _b)
{
const float nx = _n[0];
const float ny = _n[1];
const float nz = _n[2];
if (bx::fabsolute(nx) > bx::fabsolute(nz) )
{
float invLen = 1.0f / bx::fsqrt(nx*nx + nz*nz);
_t[0] = -nz * invLen;
_t[1] = 0.0f;
_t[2] = nx * invLen;
}
else
{
float invLen = 1.0f / bx::fsqrt(ny*ny + nz*nz);
_t[0] = 0.0f;
_t[1] = nz * invLen;
_t[2] = -ny * invLen;
}
bx::vec3Cross(_b, _n, _t);
}
inline void quatIdentity(float* _result)
{
_result[0] = 0.0f;