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Amiga ACS 1998 #6
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amigaacscoverdisc1998-061998.iso
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ksegsel.c
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C/C++ Source or Header
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1998-06-08
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6KB
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241 lines
/*
* $Source: f:/miner/source/main/editor/rcs/ksegsel.c $
* $Revision: 2.0 $
* $Author: john $
* $Date: 1995/02/27 11:35:33 $
*
* Functions for selecting segments
*
* $Log: ksegsel.c $
* Revision 2.0 1995/02/27 11:35:33 john
* Version 2.0! No anonymous unions, Watcom 10.0, with no need
* for bitmaps.tbl.
*
* Revision 1.12 1994/08/25 21:57:02 mike
* IS_CHILD stuff.
*
* Revision 1.11 1994/05/23 14:48:35 mike
* make current segment be add segment.
*
* Revision 1.10 1993/12/06 19:33:43 yuan
* Fixed autosave stuff so that undo restores Cursegp and
* Markedsegp
*
* Revision 1.9 1993/12/02 12:39:37 matt
* Removed extra includes
*
* Revision 1.8 1993/11/12 13:08:17 yuan
* Fixed warning for concave segment so it appears after any
* "less important" diagnostic messages.
*
* Revision 1.7 1993/11/05 17:32:49 john
* added funcs
* .,
*
* Revision 1.6 1993/11/01 09:53:18 mike
* Write functions get_next_segment and get_previous_segment.
*
* Revision 1.5 1993/10/31 18:06:56 mike
* Only set_view_target_from_segment if in that mode.
*
* Revision 1.4 1993/10/28 15:01:09 matt
* Mucked with update flags
*
* Revision 1.3 1993/10/14 18:07:47 mike
* Change use of CONNECTIVITY to MAX_SIDES_PER_SEGMENT
*
* Revision 1.2 1993/10/14 11:47:34 john
* *** empty log message ***
*
* Revision 1.1 1993/10/13 18:53:39 john
* Initial revision
*
*
*/
#pragma off (unreferenced)
static char rcsid[] = "$Id: ksegsel.c 2.0 1995/02/27 11:35:33 john Exp $";
#pragma on (unreferenced)
#include <string.h>
#include "inferno.h"
#include "editor.h"
// ---------------------------------------------------------------------------------------
// Select previous segment.
// If there is a connection on the side opposite to the current side, then choose that segment.
// If there is no connecting segment on the opposite face, try any segment.
void get_previous_segment(int curseg_num, int curside,int *newseg_num, int *newside)
{
int s;
*newseg_num = curseg_num;
if (IS_CHILD(Segments[curseg_num].children[Side_opposite[curside]]))
*newseg_num = Segments[curseg_num].children[Side_opposite[curside]];
else // no segment on opposite face, connect to anything
for (s=0; s<MAX_SIDES_PER_SEGMENT; s++)
if ((s != curside) && IS_CHILD(Segments[curseg_num].children[s]))
*newseg_num = Segments[curseg_num].children[s];
// Now make Curside point at the segment we just left (unless we couldn't leave it).
if (*newseg_num != curseg_num)
*newside = find_connect_side(&Segments[curseg_num],&Segments[*newseg_num]);
else
*newside = curside;
}
// --------------------------------------------------------------------------------------
// Select next segment.
// If there is a connection on the current side, then choose that segment.
// If there is no connecting segment on the current side, try any segment.
void get_next_segment(int curseg_num, int curside, int *newseg_num, int *newside)
{
int s;
if (IS_CHILD(Segments[curseg_num].children[curside])) {
*newseg_num = Segments[curseg_num].children[Curside];
// Find out what side we came in through and favor side opposite that
*newside = Side_opposite[find_connect_side(&Segments[curseg_num],&Segments[*newseg_num])];
// If there is nothing attached on the side opposite to what we came in (*newside), pick any other side
if (!IS_CHILD(Segments[*newseg_num].children[*newside]))
for (s=0; s<MAX_SIDES_PER_SEGMENT; s++)
if ((Segments[*newseg_num].children[s] != curseg_num) && IS_CHILD(Segments[*newseg_num].children[s]))
*newside = s;
} else {
*newseg_num = curseg_num;
*newside = curside;
}
}
// ---------- select current segment ----------
int SelectCurrentSegForward()
{
int newseg_num,newside;
get_next_segment(Cursegp-Segments,Curside,&newseg_num,&newside);
if (newseg_num != Cursegp-Segments) {
Cursegp = &Segments[newseg_num];
Curside = newside;
Update_flags |= UF_ED_STATE_CHANGED;
if (Lock_view_to_cursegp)
set_view_target_from_segment(Cursegp);
med_create_new_segment_from_cursegp();
mine_changed = 1;
}
return 1;
}
// -------------------------------------------------------------------------------------
int SelectCurrentSegBackward()
{
int newseg_num,newside;
get_previous_segment(Cursegp-Segments,Curside,&newseg_num,&newside);
Cursegp = &Segments[newseg_num];
Curside = newside;
if (Lock_view_to_cursegp)
set_view_target_from_segment(Cursegp);
Update_flags |= UF_ED_STATE_CHANGED;
mine_changed = 1;
med_create_new_segment_from_cursegp();
return 1;
}
// ---------- select next/previous side on current segment ----------
int SelectNextSide()
{
if (++Curside >= MAX_SIDES_PER_SEGMENT)
Curside = 0;
Update_flags |= UF_ED_STATE_CHANGED;
mine_changed = 1;
return 1;
}
int SelectPrevSide()
{
if (--Curside < 0)
Curside = MAX_SIDES_PER_SEGMENT-1;
Update_flags |= UF_ED_STATE_CHANGED;
mine_changed = 1;
return 1;
}
// ---------- Copy current segment and side to marked segment and side ----------
int CopySegToMarked()
{
autosave_mine(mine_filename);
strcpy(undo_status[Autosave_count], "Mark Segment UNDONE.");
Markedsegp = Cursegp;
Markedside = Curside;
Update_flags |= UF_ED_STATE_CHANGED;
mine_changed = 1;
return 1;
}
// ---------- select absolute face on segment ----------
int SelectBottom()
{
Curside = WBOTTOM;
Update_flags |= UF_ED_STATE_CHANGED;
mine_changed = 1;
return 1;
}
int SelectFront()
{
Curside = WFRONT;
Update_flags |= UF_ED_STATE_CHANGED;
mine_changed = 1;
return 1;
}
int SelectTop()
{
Curside = WTOP;
Update_flags |= UF_ED_STATE_CHANGED;
mine_changed = 1;
return 1;
}
int SelectBack()
{
Curside = WBACK;
Update_flags |= UF_ED_STATE_CHANGED;
mine_changed = 1;
return 1;
}
int SelectLeft()
{
Curside = WLEFT;
Update_flags |= UF_ED_STATE_CHANGED;
mine_changed = 1;
return 1;
}
int SelectRight()
{
Curside = WRIGHT;
Update_flags |= UF_ED_STATE_CHANGED;
mine_changed = 1;
return 1;
}