92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
/*
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* Gem-graph OpenGL experiments
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*
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* Desc: Base header
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*
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* Copyright (C) 2023 Arthur Menges <arthur.menges@a-lec.org>
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* Copyright (C) 2023 Adrien Bourmault <neox@a-lec.org>
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*
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* This file is part of Gem-graph.
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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 Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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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 Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero 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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#pragma once
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#include <assert.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdbool.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <glib-2.0/glib.h>
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//#define G_APPLICATION_DEFAULT_FLAGS 0
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enum { X_AXIS, Y_AXIS, Z_AXIS, N_AXIS }; // < used by : graph_area.h
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enum { HOME_MODE, RUN_MODE, EDIT_MODE, PRESENTATION_MODE, N_MODE }; // Gem-graph modes
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struct arrow_t { uint load; uint site; uint x; uint y; uint z; }; // describes an arrow
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static inline char *read_file(char *filename); // < used by : init.c
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/* I'm standing on Earth (or any spinning spheroid) and looking towards its North pole, then :
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X - X = EAST - WEST = rouge - cyan
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Y - Y = ZENITH - NADIR = vert - magenta (fuschia)
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Z - Z = NORTH - SOUTH = bleu - jaune */
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#define EAST 0 // + x rouge
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#define WEST 1 // - x cyan
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#define ZENITH 2 // + y vert
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#define NADIR 3 // - y magenta
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#define SOUTH 4 // + z bleu
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#define NORTH 5 // - z jaune
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/*
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* char *read_file(char *filename) reads a file from filename into a provided buffer
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*
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* @param filename, file name
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* contents, target ptr
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*
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* @return void
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*/
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static inline char *read_file(char *filename)
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{
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int fd;
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int filesize;
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char *contents;
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fd = open(filename, O_RDONLY);
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if(fd < 0) {
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printf("Couldn't read file: %s\n",filename);
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return NULL;
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}
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filesize = lseek(fd, 0, SEEK_END) + 1 ;
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contents = g_malloc(filesize * sizeof(char));
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assert (contents);
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lseek(fd, 0, SEEK_SET);
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read(fd,contents,filesize);
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contents[filesize-1] = '\0';
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close(fd);
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return contents;
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}
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