mgcgausspointsfit.h

3D Game Engine Design Source Code非常棒

// Magic Software, Inc.
// http://www.magic-software.com
// Copyright (c) 2000, All Rights Reserved
//
// Source code from Magic Software is supplied under the terms of a license
// agreement and may not be copied or disclosed except in accordance with the
// terms of that agreement.  The various license agreements may be found at
// the Magic Software web site.  This file is subject to the license
//
// FREE SOURCE CODE
// http://www.magic-software.com/License/free.pdf

#ifndef MGCGAUSSPOINTSFIT_H
#define MGCGAUSSPOINTSFIT_H

// Fit points with a Gaussian distribution.  The center is the mean of the
// points, the axes are the eigenvectors of the covariance matrix, and the
// extents are the eigenvalues of the covariance matrix and are returned in
// increasing order.  The last two functions allow selection of valid
// vertices from a pool.  The return value is 'true' if and only if at least
// one vertex was valid.

#include "MgcVector2.h"
#include "MgcVector3.h"


void MgcGaussPointsFit (int iQuantity, const MgcVector2* akPoint,
    MgcVector2& rkCenter, MgcVector2 akAxis[2], MgcReal afExtent[2]);

void MgcGaussPointsFit (int iQuantity, const MgcVector3* akPoint,
    MgcVector3& rkCenter, MgcVector3 akAxis[3], MgcReal afExtent[3]);

bool MgcGaussPointsFit (int iQuantity, const MgcVector2* akPoint,
    const bool* abValid, MgcVector2& rkCenter, MgcVector2 akAxis[2],
    MgcReal afExtent[2]);

bool MgcGaussPointsFit (int iQuantity, const MgcVector3* akPoint,
    const bool* abValid, MgcVector3& rkCenter, MgcVector3 akAxis[3],
    MgcReal afExtent[3]);

#endif