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Cleanup.

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This commit is contained in:
Branimir Karadžić
2016-05-26 21:12:47 -07:00
parent 10b9d079bf
commit 71afc178c8
1 changed files with 18 additions and 24 deletions
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42
examples/common/bounds.cpp
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@@ -279,32 +279,26 @@ void calcMinBoundingSphere(Sphere& _sphere, const void* _vertices, uint32_t _num
void calcPlaneUv(const Plane& _plane, float* _udir, float* _vdir)
{
const uint8_t axis =
bx::fabsolute(_plane.m_normal[0]) > 0.6f ? 0
: (bx::fabsolute(_plane.m_normal[1]) > 0.6f ? 1
: 2
);
const uint8_t* index = (uint8_t*)&"\x1\x2\x0\x2\x0\x1"[axis*2];
const uint8_t idx0 = *(index );
const uint8_t idx1 = *(index+1);
const float nx = _plane.m_normal[0];
const float ny = _plane.m_normal[1];
const float nz = _plane.m_normal[2];
_udir[0] = 0.0f;
_udir[1] = 0.0f;
_udir[2] = 0.0f;
_udir[idx0] = 1.0f;
if (bx::fabsolute(nx) > bx::fabsolute(nz) )
{
float invLen = 1.0f / bx::fsqrt(nx*nx + nz*nz);
_udir[0] = -nz * invLen;
_udir[1] = 0.0f;
_udir[2] = nx * invLen;
}
else
{
float invLen = 1.0f / bx::fsqrt(ny*ny + nz*nz);
_udir[0] = 0.0f;
_udir[1] = nz * invLen;
_udir[2] = -ny * invLen;
}
_vdir[0] = 0.0f;
_vdir[1] = 0.0f;
_vdir[2] = 0.0f;
_vdir[idx1] = 1.0f;
const float invPlaneAxis = 1.0f / _plane.m_normal[axis];
_udir[axis] -= bx::vec3Dot(_udir, _plane.m_normal) * invPlaneAxis;
bx::vec3Norm(_udir, _udir);
_vdir[axis] -= bx::vec3Dot(_vdir, _plane.m_normal) * invPlaneAxis;
bx::vec3Norm(_vdir, _vdir);
bx::vec3Cross(_vdir, _plane.m_normal, _udir);
}
void buildFrustumPlanes(Plane* _result, const float* _viewProj)