/**
 * DESC: Tests circle drawing using Bresenham algorithm.
 *
 * IMP: HIGH
 */

#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>

#include <object.h>
#include <circle.h>
#include <surface.h>
#include <visual.h>

#include <debug.h>
#include <unittest.h>


int main( int argc, char *argv[] )
{
  debug_level = 0; /* 1 = warn, 2 = info, 3 = verbose, 4 = debug mode */

  printf( "Bresenham drawing test.\n" );
  printf( "Press any key to go next test step.\n" );


  visual_init( 800, 600 );

  circle_draw_aliased = circle_draw_bresenham;

  coord_t p = { 0, 0 };
  surface_t *s = surface_new( 800, 600 );
  assert_not_null( s );


  circle_t *o = circle_new();
  assert_not_null( o );

  color_t c;
  COLOR_FROM_ARGB( c, COLOR_RED );
  object_init2( o, c );


  printf( "100px red circle at ( 100, 100 )\n" );
  COLOR_FROM_ARGB( OBJECT_COLOR( o ), COLOR_RED );
  SET_COORD( o->center, 100, 100 );
  o->radius = 100;
  object_draw( o, s );

  visual_display( s, p );
  visual_update();
  visual_waitkey();

  surface_clear( s );

  printf( "200px magenta filled circle at ( 300, 300 )\n" );
  COLOR_FROM_ARGB( OBJECT_COLOR( o ), COLOR_MAGENTA );
  SET_COORD( o->center, 300, 300 );
  o->radius = 200;
  object_draw( o, s );

  visual_display( s, p );
  visual_update();
  visual_waitkey();

  surface_clear( s );

  printf( "300px white filled circle at ( 400, 300 )\n" );
  COLOR_FROM_ARGB( OBJECT_COLOR( o ), COLOR_WHITE );
  OBJECT_SET_DRAW_OPT( o, DRAW_FILL );
  SET_COORD( o->center, 400, 300 );
  o->radius = 300;
  object_draw( o, s );

  visual_display( s, p );
  visual_update();
  visual_waitkey();

  surface_clear( s );

  printf( "Series of yellow circles at ( 400, 300 ), radius change 10px\n" );
  COLOR_FROM_ARGB( OBJECT_COLOR( o ), COLOR_YELLOW );
  OBJECT_UNSET_DRAW_OPT( o, DRAW_FILL );
  SET_COORD( o->center, 400, 300 );
  unsigned r;
  for ( r=0; r <= 300; r += 10 )
    {
      o->radius = r;
      object_draw( o, s );
    }

  visual_display( s, p );
  visual_update();
  visual_waitkey();

  surface_clear( s );


  printf( "Circle outside the screen\n" );
  SET_COORD( o->center, 10, 10 );
  o->radius = 100;
  object_draw( o, s );

  visual_display( s, p );
  visual_update();
  visual_waitkey();

  surface_clear( s );

  printf( "Filled circle outside the screen\n" );
  OBJECT_SET_DRAW_OPT( o, DRAW_FILL );
  SET_COORD( o->center, 10, 10 );
  o->radius = 100;
  object_draw( o, s );

  visual_display( s, p );
  visual_update();
  visual_waitkey();

  surface_clear( s );


  surface_free( s );
  object_free( o );

  visual_quit();

  return ask_user_yn( "Everything rendered as expect?" ) != 1;
}