genesis-3d_engine/Engine/foundation/math/newMath/new_vector.h

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#pragma once
#include "math/float4.h"

//------------------------------------------------------------------------------
namespace Math
{
class vector;


// win32 VC++ does not support passing aligned objects as value so far
// here is a bug-report at microsoft saying so:
// http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=334581
typedef const vector& __VectorArg;



 

class vector : public float4
{
public:
    /// default constructor
    vector();
    /// construct from components
    vector(scalar x, scalar y, scalar z);
    /// construct from float4
    vector(const float4& rhs);
    /// construct from Ogre::Vector4
	vector(Ogre::Vector4 rhs);
    /// return the null vector
    static vector nullvec();
    /// return the standard up vector (0, 1, 0)
    static vector upvec();
    /// assignment operator
    void operator=(const vector& rhs);
    /// assign Ogre::Vector4
    void operator=(Ogre::Vector4 rhs);
    /// flip sign
    vector operator-() const;
    /// add vector inplace
    void operator+=(const vector& rhs);
    /// subtract vector inplace
    void operator-=(const vector& rhs);
    /// scale vector inplace
    void operator*=(scalar s);
    /// add 2 vectors
    vector operator+(const vector& rhs) const;
    /// subtract 2 vectors
    vector operator-(const vector& rhs) const;
    /// scale vector
    vector operator*(scalar s) const;
	/// scale vector by vector
	vector operator*(const vector& rhs) const;
	/// scale vector by vector
	vector operator/(const vector& rhs) const;
	/// scale vector by vector
	void operator*=(const vector& rhs);
	/// scale vector by vector
	void operator/=(const vector& rhs);
    /// equality operator
    bool operator==(const vector& rhs) const;
    /// inequality operator
    bool operator!=(const vector& rhs) const;
	// cross Product
	vector crossProduct(const vector& rkVector) const;
	// dot Product
	Math::scalar dotProduct(const vector& vec) const;
    /// set components
    void set(scalar x, scalar y, scalar z);
	static vector divide_xyz(const vector& lhs, const vector& rhs);

    friend class point;
};

//------------------------------------------------------------------------------
/**
*/
__forceinline
vector::vector() :
    float4(0.0f, 0.0f, 0.0f, 0.0f)
{
    // empty
}

//------------------------------------------------------------------------------
/**
*/
__forceinline
vector::vector(scalar x, scalar y, scalar z) :
    float4(x, y, z, 0.0f)
{
    // empty
}

//------------------------------------------------------------------------------
/**
*/
__forceinline
vector::vector(const float4& rhs) :
    float4(rhs)
{
    this->set_w(0.0f);
}

//------------------------------------------------------------------------------
/**
*/
__forceinline
vector::vector(Ogre::Vector4 rhs) :
    float4(rhs)
{
    // empty
}

//------------------------------------------------------------------------------
/**
*/
__forceinline vector
vector::nullvec()
{
    return vector(0.0f, 0.0f, 0.0f);
}

//------------------------------------------------------------------------------
/**
*/
__forceinline vector
vector::upvec()
{
    return vector(0.0f, 1.0f, 0.0f);
}

//------------------------------------------------------------------------------
/**
*/
__forceinline void
vector::operator=(const vector& rhs)
{
    this->vec = rhs.vec;
}

//------------------------------------------------------------------------------
/**
*/
__forceinline void
vector::operator=(Ogre::Vector4 rhs)
{
    this->vec = rhs;
}

//------------------------------------------------------------------------------
/**
*/
__forceinline vector
vector::operator-() const
{
	return -this->vec;
}

//------------------------------------------------------------------------------
/**
*/
__forceinline void
vector::operator+=(const vector& rhs)
{
	this->vec += rhs.vec;
}

//------------------------------------------------------------------------------
/**
*/
__forceinline void
vector::operator-=(const vector& rhs)
{
	this->vec -= rhs.vec;
}

//------------------------------------------------------------------------------
/**
*/
__forceinline void
vector::operator*=(scalar s)
{
	this->vec *= s;
}

//------------------------------------------------------------------------------
/**
*/
__forceinline vector
vector::operator+(const vector& rhs) const
{
	return this->vec + rhs.vec;
}

//------------------------------------------------------------------------------
/**
*/
__forceinline vector
vector::operator-(const vector& rhs) const
{
	return this->vec - rhs.vec;
}

//------------------------------------------------------------------------------
/**
*/
__forceinline vector
vector::operator*(scalar s) const
{
	return this->vec * s;
}

//------------------------------------------------------------------------------
/**
*/
__forceinline bool
vector::operator==(const vector& rhs) const
{
	return this->vec == rhs.vec;
}

//------------------------------------------------------------------------------
/**
*/
__forceinline bool
vector::operator!=(const vector& rhs) const
{
	return this->vec != rhs.vec;
}    

//------------------------------------------------------------------------------
/**
*/
__forceinline void
vector::set(scalar x, scalar y, scalar z)
{
    float4::set(x, y, z, 0.0f);
}

//------------------------------------------------------------------------
/// scale vector by vector
__forceinline vector
 vector::operator*(const vector& rhs) const
{
	return this->vec * rhs.vec;
}

//------------------------------------------------------------------------
/// scale vector by vector
__forceinline vector
	vector::operator/(const vector& rhs) const
{
	return this->vec / rhs.vec;
}
//------------------------------------------------------------------------
/// scale vector by vector
__forceinline void 
vector::operator*=(const vector& rhs)
{
	this->vec = this->vec * rhs.vec;
}
//------------------------------------------------------------------------
/// scale vector by vector
__forceinline void 
	vector::operator/=(const vector& rhs)
{
	this->vec /= rhs.vec;
}
//------------------------------------------------------------------------
__forceinline vector 
vector::crossProduct( const vector& rkVector ) const
{
	return vector(
		y() * rkVector.z() - z() * rkVector.y(),
		z() * rkVector.x() - x() * rkVector.z(),
		x() * rkVector.y() - y() * rkVector.x() );
}
//------------------------------------------------------------------------
__forceinline Math::scalar 
vector::dotProduct(const vector& vec) const
{
	return x() * vec.x() + y() * vec.y() + z() * vec.z();
}
//------------------------------------------------------------------------
__forceinline vector
vector::divide_xyz(const vector& lhs, const vector& rhs)
{
	return vector(lhs.x() / rhs.x(), lhs.y() / rhs.y(), lhs.z() / rhs.z());
}
} // namespace Math
//------------------------------------------------------------------------------