144 lines
3.2 KiB
C
144 lines
3.2 KiB
C
/*
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* Copyright 2011-2014 hasufell
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*
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* This file is part of a hasufell project.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation version 2 of the License only.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file vector.h
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* Header for the external API of vector.c,
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* also holding the vector data structure.
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* @brief header of vector.c
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*/
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#ifndef _DROW_ENGINE_VEC_MATH_H
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#define _DROW_ENGINE_VEC_MATH_H
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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/**
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* Fault intolerant macro. Will abort the program if the called
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* function failed.
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*/
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#define VECTOR_LEN_SCAL_MUL(...) \
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{ \
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if (!vector_len_scal_mul(__VA_ARGS__)) { \
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fprintf(stderr, "Failure in vector_product()!\n"); \
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abort(); \
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} \
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}
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/**
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* Fault intolerant macro. Will abort the program if the called
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* function failed.
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*/
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#define VECTOR_PRODUCT(...) \
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{ \
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if (!vector_product(__VA_ARGS__)) { \
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fprintf(stderr, "Failure in vector_product()!\n"); \
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abort(); \
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} \
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}
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/**
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* Fault intolerant macro. Will abort the program if the called
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* function failed.
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*/
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#define ADD_VECTORS(...) \
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{ \
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if (!add_vectors(__VA_ARGS__)) { \
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fprintf(stderr, "Failure in add_vectors()!\n"); \
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abort(); \
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} \
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}
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/**
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* Fault intolerant macro. Will abort the program if the called
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* function failed.
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*/
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#define SUB_VECTORS(...) \
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{ \
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if (!sub_vectors(__VA_ARGS__)) { \
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fprintf(stderr, "Failure in sub_vectors()!\n"); \
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abort(); \
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} \
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}
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/**
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* Fault intolerant macro. Will abort the program if the called
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* function failed.
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*/
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#define NORMALIZE_VECTOR(...) \
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{ \
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if (!normalize_vector(__VA_ARGS__)) { \
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fprintf(stderr, "Failure in normalize_vector()!\n"); \
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abort(); \
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} \
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}
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/**
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* Fault intolerant macro. Will abort the program if the called
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* function failed.
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*/
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#define COPY_VECTOR(...) \
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{ \
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if (!copy_vector(__VA_ARGS__)) { \
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fprintf(stderr, "Failure in copy_vector()!\n"); \
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abort(); \
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} \
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}
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/**
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* Fault intolerant macro. Will abort the program if the called
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* function failed.
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*/
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#define SET_NULL_VECTOR(...) \
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{ \
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if (!set_null_vector(__VA_ARGS__)) { \
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fprintf(stderr, "Failure in set_null_vector()!\n"); \
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abort(); \
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} \
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}
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typedef struct vector vector;
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/**
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* Represents a 3-dimensional vector.
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*/
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struct vector {
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float x;
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float y;
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float z;
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};
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bool vector_len_scal_mul(const vector *a, const float scal, vector *c);
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bool vector_product(const vector *a, const vector *b, vector *c);
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bool add_vectors(const vector *a, const vector *b, vector *c);
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bool sub_vectors(const vector *a, const vector *b, vector *c);
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bool normalize_vector(const vector *a, vector *b);
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bool copy_vector(const vector *a, vector *b);
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bool set_null_vector(vector *a);
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int is_null_vector(const vector *a);
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#endif /* _DROW_ENGINE_VEC_MATH_H */
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