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/**
* \file lib/vector/diglib/update.c
*
* \brief Vector library - update topology (lower level functions)
*
* Lower level functions for reading/writing/manipulating vectors.
*
* (C) 2001 by the GRASS Development Team
*
* This program is free software under the GNU General Public License
* (>=v2). Read the file COPYING that comes with GRASS for details.
*
* \author Radim Blazek
*/
#include <stdlib.h>
#include <grass/vector.h>
/*!
\brief Reset number of updated lines
\param Plus pointer to Plus_head structure
*/
void dig_line_reset_updated(struct Plus_head *Plus)
{
Plus->uplist.n_uplines = 0;
}
/*!
\brief Add new line to updated
\param Plus pointer to Plus_head structure
\param line line id
\param offset line offset (negative offset is ignored)
*/
void dig_line_add_updated(struct Plus_head *Plus, int line, off_t offset)
{
G_debug(3, "dig_line_add_updated(): line = %d", line);
/* undo/redo in the digitizer needs all steps,
* disable check */
#if 0
int i;
/* Check if already in list */
for (i = 0; i < Plus->uplist.n_uplines; i++) {
if (Plus->uplist.uplines[i] == line) {
G_debug(3, "\tskipped");
return;
}
}
#endif
/* Alloc space if needed */
if (Plus->uplist.n_uplines == Plus->uplist.alloc_uplines) {
Plus->uplist.alloc_uplines += 1000;
Plus->uplist.uplines = (int *)G_realloc(
Plus->uplist.uplines, Plus->uplist.alloc_uplines * sizeof(int));
Plus->uplist.uplines_offset =
(off_t *)G_realloc(Plus->uplist.uplines_offset,
Plus->uplist.alloc_uplines * sizeof(off_t));
}
Plus->uplist.uplines[Plus->uplist.n_uplines] = line;
Plus->uplist.uplines_offset[Plus->uplist.n_uplines] = offset;
Plus->uplist.n_uplines++;
}
/*!
\brief Reset number of updated nodes
\param Plus pointer to Plus_head structure
*/
void dig_node_reset_updated(struct Plus_head *Plus)
{
Plus->uplist.n_upnodes = 0;
}
/*!
\brief Add node to updated
\param Plus pointer to Plus_head structure
\param node node id
*/
void dig_node_add_updated(struct Plus_head *Plus, int node)
{
int i;
G_debug(3, "dig_node_add_updated(): node = %d", node);
/* Check if already in list */
for (i = 0; i < Plus->uplist.n_upnodes; i++) {
if (abs(Plus->uplist.upnodes[i]) == abs(node)) {
G_debug(3, "\tskipped");
return;
}
}
/* Alloc space if needed */
if (Plus->uplist.n_upnodes == Plus->uplist.alloc_upnodes) {
Plus->uplist.alloc_upnodes += 1000;
Plus->uplist.upnodes = (int *)G_realloc(
Plus->uplist.upnodes, Plus->uplist.alloc_upnodes * sizeof(int));
}
Plus->uplist.upnodes[Plus->uplist.n_upnodes] = node;
Plus->uplist.n_upnodes++;
}
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