mat4.h

Go to the documentation of this file.

/*
**  ClanLib SDK
**  Copyright (c) 1997-2009 The ClanLib Team
**
**  This software is provided 'as-is', without any express or implied
**  warranty.  In no event will the authors be held liable for any damages
**  arising from the use of this software.
**
**  Permission is granted to anyone to use this software for any purpose,
**  including commercial applications, and to alter it and redistribute it
**  freely, subject to the following restrictions:
**
**  1. The origin of this software must not be misrepresented; you must not
**     claim that you wrote the original software. If you use this software
**     in a product, an acknowledgment in the product documentation would be
**     appreciated but is not required.
**  2. Altered source versions must be plainly marked as such, and must not be
**     misrepresented as being the original software.
**  3. This notice may not be removed or altered from any source distribution.
**
**  Note: Some of the libraries ClanLib may link to may have additional
**  requirements or restrictions.
**
**  File Author(s):
**
**    Magnus Norddahl
**    Mark Page
**    Harry Storbacka
*/


#pragma once

#include "../api_core.h"
#include "../IOData/datatypes.h"
#include "mat2.h"
#include "mat3.h"

template<typename Type>
class CL_Mat2;

template<typename Type>
class CL_Mat3;

template<typename Type>
class CL_Mat4;

class CL_Angle;

template<typename Type>
class CL_Mat4
{

public:
        CL_Mat4()
        {
                for (int i=0; i<16; i++)
                        matrix[i] = 0;
        }

        CL_Mat4(const CL_Mat4<Type> &copy)
        {
                for (int i=0; i<16; i++)
                        matrix[i] = copy.matrix[i];
        }

        CL_Mat4(const CL_Mat2<Type> &copy);

        CL_Mat4(const CL_Mat3<Type> &copy);

        CL_Mat4(const float *init_matrix)
        {
                for (int i=0; i<16; i++)
                        matrix[i] = (Type) init_matrix[i];
        }

        CL_Mat4(const double *init_matrix)
        {
                for (int i=0; i<16; i++)
                        matrix[i] = (Type) init_matrix[i];
        }

        CL_Mat4(const cl_int64 *init_matrix)
        {
                for (int i=0; i<16; i++)
                        matrix[i] = (Type) init_matrix[i];
        }

        CL_Mat4(const cl_int32 *init_matrix)
        {
                for (int i=0; i<16; i++)
                        matrix[i] = (Type) init_matrix[i];
        }

        CL_Mat4(const cl_int16 *init_matrix)
        {
                for (int i=0; i<16; i++)
                        matrix[i] = (Type) init_matrix[i];
        }

        CL_Mat4(const cl_int8 *init_matrix)
        {
                for (int i=0; i<16; i++)
                        matrix[i] = (Type) init_matrix[i];
        }

        static CL_Mat4<Type> null();

        static CL_Mat4<Type> identity();

        static CL_Mat4<Type> frustum(Type left, Type right, Type bottom, Type top, Type z_near, Type z_far);

        static CL_Mat4<Type> perspective(
                Type field_of_view_y_degrees,
                Type aspect,
                Type z_near,
                Type z_far);

        static CL_Mat4<Type> ortho(Type left, Type right, Type bottom, Type top, Type z_near, Type z_far);

        static CL_Mat4<Type> ortho_2d(Type left, Type right, Type bottom, Type top);

        static CL_Mat4<Type> rotate(const CL_Angle &angle, Type x, Type y, Type z, bool normalize = true);

        static CL_Mat4<Type> scale(Type x, Type y, Type z);

        static CL_Mat4<Type> translate(Type x, Type y, Type z);

        static CL_Mat4<Type> look_at(
                Type eye_x, Type eye_y, Type eye_z,
                Type center_x, Type center_y, Type center_z,
                Type up_x, Type up_y, Type up_z);

        static CL_Mat4<Type> multiply(const CL_Mat4<Type> &matrix_1, const CL_Mat4<Type> &matrix_2);

        static CL_Mat4<Type> add(const CL_Mat4<Type> &matrix_1, const CL_Mat4<Type> &matrix_2);

        static CL_Mat4<Type> subtract(const CL_Mat4<Type> &matrix_1, const CL_Mat4<Type> &matrix_2);

        static CL_Mat4<Type> adjoint(const CL_Mat4<Type> &matrix);

        static CL_Mat4<Type> inverse(const CL_Mat4<Type> &matrix);


public:
        Type matrix[16];

        Type get_origin_x() const { return matrix[12]; }

        Type get_origin_y() const { return matrix[13]; }

        Type get_origin_z() const { return matrix[14]; }


public:
        CL_Mat4<Type> &multiply(const CL_Mat4<Type> &mult);

        CL_Mat4<Type> &add(const CL_Mat4<Type> &add_matrix);

        CL_Mat4<Type> &subtract(const CL_Mat4<Type> &sub_matrix);

        CL_Mat4<Type> &scale_self(Type x, Type y, Type z);

        CL_Mat4<Type> &translate_self(Type x, Type y, Type z);

        double det() const;

        CL_Mat4<Type> &adjoint();

        CL_Mat4<Type> &inverse();


public:
        operator Type const*() const { return matrix; }

        operator Type *() { return matrix; }

        Type &operator[](int i) { return matrix[i]; }

        const Type &operator[](int i) const { return matrix[i]; }

        Type &operator[](unsigned int i) { return matrix[i]; }

        const Type &operator[](unsigned int i) const { return matrix[i]; }

        CL_Mat4<Type> &operator =(const CL_Mat4<Type> &copy) {memcpy(matrix, copy.matrix, sizeof(matrix)); return *this; }

        CL_Mat4<Type> &operator =(const CL_Mat3<Type> &copy);

        CL_Mat4<Type> &operator =(const CL_Mat2<Type> &copy);

        CL_Mat4<Type> operator *(const CL_Mat4<Type> &mult) const { CL_Mat4<Type> result = mult; result.multiply(*this); return result; }

        CL_Mat4<Type> operator +(const CL_Mat4<Type> &add_matrix) const { CL_Mat4<Type> result = add_matrix; result.add(*this); return result; }

        CL_Mat4<Type> operator -(const CL_Mat4<Type> &sub_matrix) const { CL_Mat4<Type> result = sub_matrix; result.subtract(*this); return result; }

        bool operator==(const CL_Mat4<Type> &other)
        {
                for (int i=0; i<16; i++)
                        if (matrix[i] != other.matrix[i]) return false;
                return true;
        }

        bool operator!=(const CL_Mat4<Type> &other) { return !((*this) == other); }


private:
};

typedef CL_Mat4<int> CL_Mat4i;
typedef CL_Mat4<float> CL_Mat4f;
typedef CL_Mat4<double> CL_Mat4d;

---