C++ (Cpp) rect_empty Examples

Example #1

File: nautilus-selection-canvas-item.c Project: daschuer/nautilus

static void
diff_rects (Rect r1,
            Rect r2,
            int *count,
            Rect result[4])
{
    g_assert (count != NULL);
    g_assert (result != NULL);

    *count = 0;

    if (rects_intersect (r1, r2))
    {
        diff_rects_guts (r1, r2, count, result);
        diff_rects_guts (r2, r1, count, result);
    }
    else
    {
        if (!rect_empty (&r1))
        {
            result[(*count)++] = r1;
        }
        if (!rect_empty (&r2))
        {
            result[(*count)++] = r2;
        }
    }
}

Example #2

File: scr_painter.c Project: NoSuchProcess/phantomuserland

// Subtract rectangle from q
void paint_q_sub( rect_t *r )
{
    pqel_t *pqel;

    ASSERT_LOCKED_MUTEX( &rect_list_lock );

again:
    queue_iterate( &rect_list, pqel, pqel_t *, chain )
    {

        // r includes qe - delete qe
        if( rect_includes( r, &pqel->r ) )
        {
            queue_remove( &rect_list, pqel, pqel_t *, chain );
            goto again;
        }

        // r intersects w qe - divide in two
        if( rect_intersects( r, &pqel->r ) )
        {
            rect_t out1, out2;

            rect_sub( &out1, &out2, r, &pqel->r );

            if( !rect_empty( &out1 ) )
            {
                pqel_t *new1 = mkel( &out1 );  if( !new1 ) return;
                queue_enter(&rect_list, new1, pqel_t *, chain);
            }