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WIP: move vmatrix functions to header and inline them

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nillerusr
2023-04-26 19:56:15 +00:00
parent a63138347b
commit 7ceba77616
6 changed files with 1443 additions and 1654 deletions
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58
mathlib/mathlib_base.cpp
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@@ -420,13 +420,6 @@ void MatrixGetColumn( const matrix3x4_t& in, int column, Vector &out )
out.z = in[2][column];
}
void MatrixSetColumn( const Vector &in, int column, matrix3x4_t& out )
{
out[0][column] = in.x;
out[1][column] = in.y;
out[2][column] = in.z;
}
void MatrixScaleBy ( const float flScale, matrix3x4_t &out )
{
out[0][0] *= flScale;
@@ -1092,57 +1085,6 @@ void SetScaleMatrix( float x, float y, float z, matrix3x4_t &dst )
dst[2][0] = 0.0f; dst[2][1] = 0.0f; dst[2][2] = z; dst[2][3] = 0.0f;
}
//-----------------------------------------------------------------------------
// Purpose: Builds the matrix for a counterclockwise rotation about an arbitrary axis.
//
// | ax2 + (1 - ax2)cosQ axay(1 - cosQ) - azsinQ azax(1 - cosQ) + aysinQ |
// Ra(Q) = | axay(1 - cosQ) + azsinQ ay2 + (1 - ay2)cosQ ayaz(1 - cosQ) - axsinQ |
// | azax(1 - cosQ) - aysinQ ayaz(1 - cosQ) + axsinQ az2 + (1 - az2)cosQ |
//
// Input : mat -
// vAxisOrRot -
// angle -
//-----------------------------------------------------------------------------
void MatrixBuildRotationAboutAxis( const Vector &vAxisOfRot, float angleDegrees, matrix3x4_t &dst )
{
float radians;
float axisXSquared;
float axisYSquared;
float axisZSquared;
float fSin;
float fCos;
radians = angleDegrees * ( M_PI / 180.0 );
fSin = sin( radians );
fCos = cos( radians );
axisXSquared = vAxisOfRot[0] * vAxisOfRot[0];
axisYSquared = vAxisOfRot[1] * vAxisOfRot[1];
axisZSquared = vAxisOfRot[2] * vAxisOfRot[2];
// Column 0:
dst[0][0] = axisXSquared + (1 - axisXSquared) * fCos;
dst[1][0] = vAxisOfRot[0] * vAxisOfRot[1] * (1 - fCos) + vAxisOfRot[2] * fSin;
dst[2][0] = vAxisOfRot[2] * vAxisOfRot[0] * (1 - fCos) - vAxisOfRot[1] * fSin;
// Column 1:
dst[0][1] = vAxisOfRot[0] * vAxisOfRot[1] * (1 - fCos) - vAxisOfRot[2] * fSin;
dst[1][1] = axisYSquared + (1 - axisYSquared) * fCos;
dst[2][1] = vAxisOfRot[1] * vAxisOfRot[2] * (1 - fCos) + vAxisOfRot[0] * fSin;
// Column 2:
dst[0][2] = vAxisOfRot[2] * vAxisOfRot[0] * (1 - fCos) + vAxisOfRot[1] * fSin;
dst[1][2] = vAxisOfRot[1] * vAxisOfRot[2] * (1 - fCos) - vAxisOfRot[0] * fSin;
dst[2][2] = axisZSquared + (1 - axisZSquared) * fCos;
// Column 3:
dst[0][3] = 0;
dst[1][3] = 0;
dst[2][3] = 0;
}
//-----------------------------------------------------------------------------
// Computes the transpose
//-----------------------------------------------------------------------------

1264
mathlib/vmatrix.cpp
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