nephacks/cstrike15_src
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

initial

Browse Source
This commit is contained in:
nephacks
2025-06-04 03:22:50 +02:00
parent f234f23848
commit f12416cffd
14243 changed files with 6446499 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
public/mathlib/eigen.h Normal file
View File

@@ -0,0 +1,26 @@
//========= Copyright c 1996-2009, Valve Corporation, All rights reserved. ============//
//
// Purpose: anything remotely related to eigen-[problem,solver,value,vector, whatever] goes here
//
// $NoKeywords: $
//=============================================================================//
#ifndef EIGEN_H
#define EIGEN_H
#include "tier0/dbg.h"
#include "mathlib/mathlib.h"
extern Quaternion Diagonalizer( const matrix3x4_t &A, Vector &d );
// Routines which use Diagonalizer() to compute tight oriented bounding boxes for point sets
// Computes the mean point of a set of points, used by ComputeCovariantMatrix
extern Vector ComputeMeanPoint( const Vector *pPointList, int nPointCount );
// Computes a covariance matrix for a set of points which measures spatial dispersion of the points against the mean of the points, the covariance matrix is symmetric and suitable for use in Diagonalizer()
extern void ComputeCovarianceMatrix( matrix3x4_t &covarianceMatrix, const Vector *pPointList, int nPointCount );
// Computes the center and scale using qEigenVectors as the orientation to transform a unit cube at the origin to contain the specified point list, calls ComputeCovarianceMatrix(), Diagonalizer()
extern void ComputeExtents( Vector &vCenter, Vector &vScale, const Quaternion &qEigenVectors, const Vector *pPointList, int nPointCount );
// Wraps up all of the above calls to compute the matrix to transform a unit cube at the origin to contain the specified point list
extern void ComputeBoundingBoxMatrix( matrix3x4_t &boundingBoxMatrix, const Vector *pPointList, int nPointCount );
#endif