96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
/*
|
|
* Gem-graph OpenGL experiments
|
|
*
|
|
* Desc: OpenGL utils header
|
|
*
|
|
* Copyright (C) 2023 Jean Sirmai <jean@a-lec.org>
|
|
* Copyright (C) 2023 Adrien Bourmault <neox@a-lec.org>
|
|
*
|
|
* This file is part of Gem-graph.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#pragma once
|
|
#include <unistd.h>
|
|
#include <stdbool.h>
|
|
#include <GL/glu.h>
|
|
|
|
/*
|
|
* Structure describing an arrow
|
|
*/
|
|
typedef struct arrow_t {
|
|
GLuint load;
|
|
GLuint site;
|
|
GLuint x;
|
|
GLuint y;
|
|
GLuint z;
|
|
};
|
|
|
|
/*
|
|
* Writes basis and tip for all arrows into vertex and color buffers
|
|
*
|
|
* @param dimensions (x,y,z)
|
|
*
|
|
* @return void
|
|
*/
|
|
void arrows_write_terminations (long x, long y, long z);
|
|
|
|
/*
|
|
* Writes lines for arrow oriented to the east or west into lines buffer
|
|
*
|
|
* @param s,
|
|
* weight,
|
|
* site
|
|
*
|
|
* @return void
|
|
*/
|
|
void write_arrow_lines_east_west (long s, int weight, int site);
|
|
|
|
/*
|
|
* Writes lines for arrow oriented to the zenith or nadir into lines buffer
|
|
*
|
|
* @param s,
|
|
* weight,
|
|
* site
|
|
*
|
|
* @return void
|
|
*/
|
|
void write_arrow_lines_zenith_nadir (long s, int weight, int site);
|
|
|
|
/*
|
|
* Writes lines for arrow oriented to the south or north into lines buffer
|
|
*
|
|
* @param s,
|
|
* weight,
|
|
* site
|
|
*
|
|
* @return void
|
|
*/
|
|
void write_arrow_lines_south_north (long s, int weight, int site);
|
|
|
|
/*
|
|
* Writes three lines that draw arrow basis (central star) into lines buffer
|
|
*
|
|
* @param n
|
|
*
|
|
* @return void
|
|
*/
|
|
void arrows_write_basis (long n);
|
|
|
|
int write_one_arrow(int offset_vertex, int offset_colors, int offset_lines,
|
|
int space_X, int space_Y, int space_Z,
|
|
int weight, int site, int x, int y, int z);
|
|
|