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#include "cardioid.h"
int cardioid_init(t_cardioid *cardioid, size_t points_num, int width, int height)
{
cardioid->points = NULL;
cardioid->points_num = points_num;
return (cardioid_update_window(cardioid, width, height));
}
int cardioid_update_window(t_cardioid *cardioid, int width, int height)
{
cardioid->center.x = width / 2;
cardioid->center.y = height / 2;
cardioid->radius = MIN(width, height) / 2 - 10;
printf("%d %d, %lu\n", cardioid->center.x,
cardioid->center.y,
cardioid->radius);
return (cardioid_update_points(cardioid, cardioid->points_num));
}
int cardioid_update_points(t_cardioid *cardioid, size_t points_num)
{
double radian_step;
double radian_pos;
cardioid->points = realloc(cardioid->points, sizeof(SDL_Point) * points_num);
if (cardioid->points == NULL)
return (-1);
cardioid->points_num = points_num;
radian_pos = 0;
radian_step = (2 * M_PI) / points_num;
for (size_t i = 0; i < points_num; i++)
{
cardioid->points[i].x = cos(radian_pos) * (double)cardioid->radius + (double)cardioid->center.x;
cardioid->points[i].y = sin(radian_pos) * (double)cardioid->radius + (double)cardioid->center.y;
radian_pos += radian_step;
}
return (0);
}
void cardioid_quit(t_cardioid *cardioid)
{
free(cardioid->points);
}
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