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/*-
* Copyright (C) 2025 Alessandro Iezzi <aiezzi AT alessandroiezzi PERIOD it>
*
* This file is part of Tris Game.
*
* Tris Game is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Tris Game 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Tris Game. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <GL/gl.h>
#include <math.h>
#include "circle.h"
Circle *
engine_circle_new(float cx, float cy, float r, int num_segments, int outline)
{
Circle *circle = malloc(sizeof(Circle));
circle->cx = cx;
circle->cy = cy;
circle->r = r;
circle->num_segments = num_segments;
circle->outline = outline;
return circle;
}
void
engine_render_circle(Circle *circle)
{
glBegin(GL_LINE_LOOP);
if (circle->color != NULL) {
glColor3f(circle->color->r, circle->color->g, circle->color->b);
}
for (int i = 0; i < circle->num_segments; i++) {
float theta = 2.0f * M_PI * i / circle->num_segments;
float x = circle->r * cosf(theta);
float y = circle->r * sinf(theta);
glVertex2f(circle->cx + x, circle->cy + y);
}
glEnd();
}
void
engine_circle_set_color(Circle *circle, Color *color)
{
if (circle == NULL) return;
circle->color = color;
}
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