source: trunk/packages/vizservers/nanovis/vrmath/include/vrmath/Vector4f.h @ 3470

/* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
#ifndef VRVECTOR4F_H
#define VRVECTOR4F_H

#include <vrmath/Vector3f.h>
#include <vrmath/Vector4f.h>

class vrMatrix4x4f;

class vrVector4f
{
public:
    vrVector4f() :
        x(0.0f), y(0.0f), z(0.0f), w(0.0f)
    {}

    vrVector4f(const vrVector4f& v4) :
        x(v4.x), y(v4.y), z(v4.z), w(v4.w)
    {}

    vrVector4f(const vrVector3f& v3, float w1) :
        x(v3.x), y(v3.y), z(v3.z), w(w1)
    {}

    vrVector4f(float x1, float y1, float z1, float w1) :
        x(x1), y(y1), z(z1), w(w1)
    {}

    void set(float x1, float y1, float z1, float w1);
 
    void set(const vrVector3f& v, float w);

    void set(const vrVector4f& v4);

    void divideByW();

    float dot(const vrVector4f& vec);

    void mult(const vrMatrix4x4f& mat, const vrVector4f& vec);

    void mult(const vrMatrix4x4f& mat);

    void transform(const vrVector4f& v, const vrMatrix4x4f& m);

    float x, y, z, w;
};

inline void vrVector4f::divideByW()
{
    if (w != 0) {
        x /= w; y /= w; z /= w;
        w = 1.0f;
    }
}

inline void vrVector4f::set(float x1, float y1, float z1, float w1)
{
    x = x1;
    y = y1;
    z = z1;
    w = w1;
}

inline void vrVector4f::set(const vrVector4f& v4)
{
    x = v4.x;
    y = v4.y;
    z = v4.z;
    w = v4.w;
}

inline void vrVector4f::set(const vrVector3f& v, float w1)
{
    x = v.x;
    y = v.y;
    z = v.z;
    w = w1;
}

inline float vrVector4f::dot(const vrVector4f& vec)
{
    return x * vec.x + y * vec.y + z * vec.z + w * vec.w;
}

#endif