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=encoding UTF-8
=head1 NAME
BH_Mat3f - a real 3x3 matrix
=head1 SYNTAX
#include <BH/Math/Mat3f.h>
cc prog.c -o prog -lbh
=head1 DESCRIPTION
The BH_Mat3f module provides a set of functions for working with real 3x3
matrices.
=head1 API CALLS
=head2 BH_Mat3fIdentity
void BH_Mat3fIdentity(float out[9]);
Writes an identity matrix to I<out>.
=head2 BH_Mat3fAdd
void BH_Mat3fAdd(const float a[9],
const float b[9],
float out[9]);
Calculates the sum of two matrices I<a> and I<b>.
The I<out> parameter describes the resulting matrix.
=head2 BH_Mat3fSub
void BH_Mat3fSub(const float a[9],
const float b[9],
float out[9]);
Calculates the difference between two matrices I<a> and I<b>.
The I<out> parameter describes the resulting matrix.
=head2 BH_Mat3fMul
void BH_Mat3fMul(const float a[9],
const float b[9],
float out[9]);
Calculates the result of multiplying two matrices I<a> and I<b>.
The I<out> parameter describes the resulting matrix.
=head2 BH_Mat3fScale
void BH_Mat3fScale(const float a[9],
float b,
float out[9]);
Calculates the result of multiplying matrix I<a> by value I<b>.
The I<out> parameter describes the resulting matrix.
=head2 BH_Mat3fTranspose
void BH_Mat3fTranspose(const float in[9],
float out[9]);
Transposes matrix I<in>.
The I<out> parameter describes the resulting matrix.
=head2 BH_Mat3fTrace
float BH_Mat3fTrace(const float in[9]);
Calculates the sum of the elements of the main diagonal of matrix I<in>.
=head2 BH_Mat3fDet
float BH_Mat3fDet(const float in[9]);
Calculates the determinant of matrix I<in>.
=head2 BH_Mat3fInverse
int BH_Mat3fInverse(const float in[9],
float out[9]);
Calculates the inverse matrix for I<in>.
The I<out> parameter describes the resulting matrix.
If successful, the function returns 0, otherwise it returns an error code.
=head2 BH_Mat3fFromScale
void BH_Mat3fFromScale(float x,
float y,
float out[9]);
Calculates a scaling matrix with scales I<x> and I<y>.
The I<out> parameter describes the resulting matrix.
=head2 BH_Mat3fFromTranslation
void BH_Mat3fFromTranslation(float x,
float y,
float out[9]);
Calculates a translation matrix with values I<x> and I<y>.
The I<out> parameter describes the resulting matrix.
=head2 BH_Mat3fFromRotation
void BH_Mat3fFromRotation(float angle,
float out[9]);
Calculates a rotation matrix with a given I<angle>.
The I<out> parameter describes the resulting matrix.
=head2 BH_Mat3fApplyVec3f
void BH_Mat3fApplyVec3f(float a[9],
float b[3],
float out[3]);
Calculates the result of multiplying matrix I<a> by vector I<b>.
The I<out> parameter describes the resulting vector.
=head2 BH_Mat3fApplyVec2f
void BH_Mat3fApplyVec2f(float a[9],
float b[2],
float out[2]);
Calculates the result of multiplying matrix I<a> by vector I<b>.
The I<out> parameter describes the resulting vector.
=head1 SEE ALSO
L<BH>
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