initial
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r.koeppe
87
vnproglib/c/include/vn/math/matrix.h
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87
vnproglib/c/include/vn/math/matrix.h
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#ifndef VN_MATRIX_H_INCLUDED
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#define VN_MATRIX_H_INCLUDED
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#include "vn/util/compiler.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** \brief Represents a 3x3 matrix with an underlying data type of <c>float</c>. */
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typedef union
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{
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float e[3*3]; /**< The matrix's elements in column-major ordering. */
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/* Check if the compiler supports anonymous unions. */
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#if defined(__STDC_VERSION___) && (__STDC_VERSION__ >= 201112L) && defined(__GNUC__)
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struct
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{
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float e00; /**< Element [0,0]. */
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float e10; /**< Element [1,0]. */
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float e20; /**< Element [2,0]. */
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float e01; /**< Element [0,1]. */
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float e11; /**< Element [1,1]. */
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float e21; /**< Element [2,1]. */
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float e02; /**< Element [0,2]. */
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float e12; /**< Element [1,2]. */
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float e22; /**< Element [2,2]. */
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};
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#endif
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} mat3f;
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/** \brief Represents a quaternion reading with underlying data type of <c>float</c>. */
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typedef union
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{
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float c[4]; /**< Indexable. */
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/* Check if the compiler supports anonymous unions. */
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#if defined(__STDC_VERSION___) && (__STDC_VERSION__ >= 201112L) && defined(__GNUC__)
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struct
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{
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float x; /**< The x component. */
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float y; /**< The y component. */
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float z; /**< The z component. */
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float w; /**< The w component. */
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};
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struct
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{
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float c0; /**< Component 0. */
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float c1; /**< Component 1. */
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float c2; /**< Component 2. */
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float c3; /**< Component 2. */
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};
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#endif
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} quatf;
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/** \brief Initializes a 3x3 float matrix from an float array with matrix
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* elements in column-major ordering.
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*
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* \param[out] m 3x3 float matrix to initialize
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* \param[in] fa float array containing a 3x3 matrix in column-major order */
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void vn_m3_init_fa(mat3f* m, const float* fa);
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/** \brief Converts a mat3f to a string.
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*
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* \param[out] out The char buffer to output the result to.
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* \param[in] m The mat3f to convert.
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*/
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void strFromMat3f(char* out, mat3f m);
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/** \brief Negates a mat3f.
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* \param[in] m Matrix to negate.
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* \return Negated matrix. */
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mat3f vnm_negative_mat3f(mat3f m);
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#ifdef __cplusplus
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}
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#endif
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#endif
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172
vnproglib/c/include/vn/math/vector.h
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172
vnproglib/c/include/vn/math/vector.h
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#ifndef VN_VECTOR_H_INCLUDED
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#define VN_VECTOR_H_INCLUDED
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#include "vn/util/compiler.h"
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/** \brief Various vector types and operations. */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** \brief Represents a 3 component vector with an underlying data type of
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* <c>float</c>. */
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typedef union
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{
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float c[3]; /**< Indexable. */
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/* Check if the compiler supports anonymous unions. */
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#if defined(__STDC_VERSION___) && (__STDC_VERSION__ >= 201112L) && defined(__GNUC__)
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struct
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{
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float x; /**< X component. */
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float y; /**< Y component. */
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float z; /**< Z component. */
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};
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struct
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{
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float c0; /**< Component 0. */
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float c1; /**< Component 1. */
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float c2; /**< Component 2. */
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};
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#endif
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} vec3f;
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/** \brief Represents a 3 component vector with an underlying data type of
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* <c>double</c>. */
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typedef union
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{
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double c[3]; /**< Indexable. */
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/* Check if the compiler supports anonymous unions. */
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#if defined(__STDC_VERSION___) && (__STDC_VERSION__ >= 201112L) && defined(__GNUC__)
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struct
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{
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double x; /**< The x component. */
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double y; /**< The y component. */
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double z; /**< The z component. */
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};
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struct
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{
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double c0; /**< Component 0. */
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double c1; /**< Component 1. */
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double c2; /**< Component 2. */
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};
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#endif
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} vec3d;
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/** \brief Represents a 4 component vector with an underlying data type of
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* <c>float</c>. */
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typedef union
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{
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float c[4]; /**< Indexable. */
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/* Check if the compiler supports anonymous unions. */
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#if (defined(__STDC_VERSION___) && (__STDC_VERSION__ >= 201112L)) && defined(__GNUC__)
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struct
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{
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float x; /**< The x component. */
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float y; /**< The y component. */
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float z; /**< The z component. */
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float w; /**< The w component. */
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};
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struct
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{
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float c0; /**< Component 0. */
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float c1; /**< Component 1. */
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float c2; /**< Component 2. */
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float c3; /**< Component 2. */
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};
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#endif
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} vec4f;
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/** \brief Initializes a 3-dimensional float vector from an float array.
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*
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* \param[out] v 3-dimensional float vector to initialize
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* \param[in] fa float array a 3-componet vector */
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void vn_v3_init_fa(vec3f* v, const float* fa);
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/** Creates a vec3d initialized with provided values.
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* \param[in] x x-component.
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* \param[in] y y-component.
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* \param[in] z z-component.
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* \return The initialized vec3d. */
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vec3d create_v3d(double x, double y, double z);
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/** \brief Adds two vec3f together.
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*
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* \param[in] lhs The lhs vec3f.
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* \param[in] rhs The rhs vec3f.
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* \return The resulting vec3f from adding lhs and rhs together. */
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vec3f add_v3f_v3f(vec3f lhs, vec3f rhs);
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/** \brief Adds two vec3d together.
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*
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* \param[in] lhs The lhs vec3d.
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* \param[in] rhs The rhs vec3d.
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* \return The resulting vec3d from adding lhs and rhs together. */
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vec3d add_v3d_v3d(vec3d lhs, vec3d rhs);
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/** \brief Adds two vec4f together.
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*
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* \param[in] lhs The lhs vec4f.
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* \param[in] rhs The rhs vec4f.
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* \return The resulting vec4f from adding lhs and rhs together. */
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vec4f add_v4f_v4f(vec4f lhs, vec4f rhs);
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/** \brief Subtracts a vec3f from another vec3f.
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*
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* \param[in] lhs The lhs vec3f.
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* \param[in] rhs The rhs vec3f.
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* \return The resulting vec3f from subtracting rhs from lhs. */
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vec3f sub_v3f_v3f(vec3f lhs, vec3f rhs);
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/** \brief Subtracts a vec3d from another vec3d.
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*
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* \param[in] lhs The lhs vec3d.
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* \param[in] rhs The rhs vec3d.
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* \return The resulting vec3d from subtracting rhs from lhs. */
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vec3d sub_v3d_v3d(vec3d lhs, vec3d rhs);
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/** \brief Subtracts a vec4f from another vec4f.
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*
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* \param[in] lhs The lhs vec4f.
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* \param[in] rhs The rhs vec4f.
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* \return The resulting vec4f from subtracting rhs from lhs. */
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vec4f sub_v4f_v4f(vec4f lhs, vec4f rhs);
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/** \brief Converts a vec3f to a string.
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*
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* \param[out] out The char buffer to output the result to.
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* \param[in] v The vec3f to convert. */
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void str_vec3f(char* out, vec3f v);
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/** \brief Converts a vec3d to a string.
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*
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* \param[out] out The char buffer to output the result to.
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* \param[in] v The vec3d to convert. */
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void str_vec3d(char* out, vec3d v);
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/** \brief Converts a vec4f to a string.
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*
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* \param[out] out The char buffer to output the result to.
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* \param[in] v The vec4f to convert. */
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void str_vec4f(char* out, vec4f v);
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#ifdef __cplusplus
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}
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#endif
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#endif
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