#define GL_GLEXT_PROTOTYPES
#include "clear_selection.h"
#include "../../model/geometry/map_geometry.h"
#include "../../view/exp004state0.h"
#include <GL/glut.h>
#include "sqlca.h"
extern struct sqlca sqlca;

/*
 * A simple alias to make the code more readable.
 */
#define S exp004state0

void
clear_selection (void)
{
  /*
   * WHERE gi IS NOT NULL is added to prevent the PRECOMPILE command
   * from throwing a warning about modifying an entire table.  Since
   * gi is defined as NOT NULL this will clear the entire table.
   */
  EXEC SQL DELETE FROM vis_selection WHERE gi IS NOT NULL;

  EXEC SQL COMMIT;

  for (unsigned int i = 0; i < S.rows; i++)
    {
      S.selection.set[i] = false;
      float *c = S.base_colors_data + (i * 4);
      *c = DEFAULT_COLOR_R;
      c++;
      *c = DEFAULT_COLOR_G;
      c++;
      *c = DEFAULT_COLOR_B;
      c++;
      *c = DEFAULT_COLOR_A;
    }

  glBindBuffer (GL_ARRAY_BUFFER, S.buffers[BASE_COLORS]);
  glColorPointer (4, GL_FLOAT, 0, 0);
  glBufferData (GL_ARRAY_BUFFER,
		sizeof (S.base_colors_data), S.base_colors_data,
		GL_STATIC_DRAW);

  /*
   * Rebuild the display list for the map.
   */
  map_geometry ();

  glutPostRedisplay ();

  return;
}