Урок 3. Примитивы. Allegro

Исходный код (линии):

#include <allegro5\allegro.h>
#include <allegro5/allegro_primitives.h> 

int main(void)
{
 int width = 640;
 int height = 480;

 ALLEGRO_DISPLAY *display = NULL;
 
 if(!al_init())   
  return -1;
 
 display = al_create_display(width, height);

 if(!display)
  return -1;
 
 al_init_primitives_addon();

 al_draw_line(100, 100, width - 100, 100, al_map_rgb(255, 0, 0), 1);
 al_draw_line(50, 200, width - 50, 200, al_map_rgb(0, 0, 255), 5);
 al_draw_line(0, 300, width, 300, al_map_rgb(255, 0, 255), 10);
 al_draw_line(50, 50, 50, 400, al_map_rgb(0, 255, 0), 3);
 al_draw_line(50, 200, width - 50, 400, al_map_rgb(0, 0, 255), 5);

 al_flip_display();
 
 al_rest(4.0);
 
 al_destroy_display(display);

 return 0;
}

Исходный код (Треугольники):

#include <allegro5\allegro.h>
#include <allegro5\allegro_primitives.h>

int main(void)
{
 int width = 640;
 int height = 480;

 ALLEGRO_DISPLAY *display = NULL;

 if(!al_init())
  return -1;

 display = al_create_display(width, height);

 if(!display)
  return -1;

 al_init_primitives_addon();

 al_draw_triangle(10, 200, 100, 10, 190, 200, al_map_rgb(255, 0, 255), 5);
 al_draw_filled_triangle(300, 400, 400, 200, 500, 400, al_map_rgb(0, 0, 255));

 al_flip_display();

 al_rest(4.0);

 al_destroy_display(display);
 return 0;
}

Исходный код (Прямоугольники, квадраты):
#include <allegro5\allegro.h>
#include <allegro5\allegro_primitives.h>

int main(void)
{
 int width = 640;
 int height = 480;

 ALLEGRO_DISPLAY *display = NULL;

 if(!al_init()) 
  return -1;

 display = al_create_display(width, height);

 if(!display)
  return -1;

 al_init_primitives_addon();

 al_draw_rectangle(10, 10, 250, 250, al_map_rgb(255, 0, 255), 5);
 al_draw_rounded_rectangle(width - 200, 10, width - 10, 50, 5, 5, al_map_rgb(0, 0, 255), 15);
 al_draw_filled_rectangle(10, 280, 250, height - 10, al_map_rgb(255, 255, 255));
 al_draw_filled_rounded_rectangle(width - 200, 180, width - 10, height - 10, 10, 10,  al_map_rgb(0, 255, 0));

 al_flip_display();
 
 al_rest(4.0);

 al_destroy_display(display);

 return 0;
}

Исходный код (круги):
#include <allegro5\allegro.h>
#include <allegro5\allegro_primitives.h>

int main(void)
{
 int width = 640;
 int height = 480;

 ALLEGRO_DISPLAY *display = NULL;

 if(!al_init()) 
  return -1;

 display = al_create_display(width, height);

 if(!display)   
  return -1;

 al_init_primitives_addon();

 al_draw_circle(100, 100, 50, al_map_rgb(255, 255, 0), 7);
 al_draw_filled_circle(400, 400, 70, al_map_rgb(255, 255, 255));

 al_flip_display();

 al_rest(4.0);

 al_destroy_display(display);

 return 0;
}

Исходный код (эллипс):
#include <allegro5\allegro.h>
#include <allegro5\allegro_primitives.h>

int main(void)
{
 int width = 640;
 int height = 480;

 ALLEGRO_DISPLAY *display = NULL;

 if(!al_init())
  return -1;

 display = al_create_display(width, height);

 if(!display)
  return -1;

 al_init_primitives_addon();

 al_draw_ellipse(150, 100, 100, 50, al_map_rgb(127, 3, 34), 7);
 al_draw_filled_ellipse(400, 250, 100, 200, al_map_rgb(0, 255, 255));

 al_flip_display();

 al_rest(4.0);

 al_destroy_display(display);

 return 0;
}

Исходный код (сплайн):
#include <allegro5\allegro.h>
#include <allegro5\allegro_primitives.h>

int main(void)
{
 int width = 640;
 int height = 480;

 ALLEGRO_DISPLAY *display = NULL;

 if(!al_init())
  return -1;

 display = al_create_display(width, height);

 if(!display)
  return -1;

 al_init_primitives_addon();

 float points[] = {0, 0, 400, 100, 50, 200, width, height};
 al_draw_spline(points, al_map_rgb(255, 0, 255), 0);

 float points2[] = {0, height, 200, 100, 400, 200, width, height};
 al_draw_spline(points2, al_map_rgb(0, 0, 255), 3);

 al_flip_display();

 al_rest(4.0);

 al_destroy_display(display);

 return 0;
}