1 /* $Id: ksegsel.c,v 1.3 2004-12-19 15:21:11 btb Exp $ */
3 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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5 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
6 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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8 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
9 FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
10 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
11 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
12 COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
17 * Functions for selecting segments
22 static char rcsid[] = "$Id: ksegsel.c,v 1.3 2004-12-19 15:21:11 btb Exp $";
32 #include "editor/editor.h"
35 // ---------------------------------------------------------------------------------------
36 // Select previous segment.
37 // If there is a connection on the side opposite to the current side, then choose that segment.
38 // If there is no connecting segment on the opposite face, try any segment.
39 void get_previous_segment(int curseg_num, int curside,int *newseg_num, int *newside)
43 *newseg_num = curseg_num;
45 if (IS_CHILD(Segments[curseg_num].children[(int)Side_opposite[curside]]))
46 *newseg_num = Segments[curseg_num].children[(int)Side_opposite[curside]];
47 else // no segment on opposite face, connect to anything
48 for (s=0; s<MAX_SIDES_PER_SEGMENT; s++)
49 if ((s != curside) && IS_CHILD(Segments[curseg_num].children[s]))
50 *newseg_num = Segments[curseg_num].children[s];
52 // Now make Curside point at the segment we just left (unless we couldn't leave it).
53 if (*newseg_num != curseg_num)
54 *newside = find_connect_side(&Segments[curseg_num],&Segments[*newseg_num]);
60 // --------------------------------------------------------------------------------------
61 // Select next segment.
62 // If there is a connection on the current side, then choose that segment.
63 // If there is no connecting segment on the current side, try any segment.
64 void get_next_segment(int curseg_num, int curside, int *newseg_num, int *newside)
68 if (IS_CHILD(Segments[curseg_num].children[curside])) {
70 *newseg_num = Segments[curseg_num].children[Curside];
72 // Find out what side we came in through and favor side opposite that
73 *newside = Side_opposite[find_connect_side(&Segments[curseg_num],&Segments[*newseg_num])];
75 // If there is nothing attached on the side opposite to what we came in (*newside), pick any other side
76 if (!IS_CHILD(Segments[*newseg_num].children[*newside]))
77 for (s=0; s<MAX_SIDES_PER_SEGMENT; s++)
78 if ((Segments[*newseg_num].children[s] != curseg_num) && IS_CHILD(Segments[*newseg_num].children[s]))
81 *newseg_num = curseg_num;
87 // ---------- select current segment ----------
88 int SelectCurrentSegForward()
90 int newseg_num,newside;
92 get_next_segment(Cursegp-Segments,Curside,&newseg_num,&newside);
94 if (newseg_num != Cursegp-Segments) {
95 Cursegp = &Segments[newseg_num];
97 Update_flags |= UF_ED_STATE_CHANGED;
98 if (Lock_view_to_cursegp)
99 set_view_target_from_segment(Cursegp);
101 med_create_new_segment_from_cursegp();
108 // -------------------------------------------------------------------------------------
109 int SelectCurrentSegBackward()
111 int newseg_num,newside;
113 get_previous_segment(Cursegp-Segments,Curside,&newseg_num,&newside);
115 Cursegp = &Segments[newseg_num];
118 if (Lock_view_to_cursegp)
119 set_view_target_from_segment(Cursegp);
120 Update_flags |= UF_ED_STATE_CHANGED;
122 med_create_new_segment_from_cursegp();
128 // ---------- select next/previous side on current segment ----------
131 if (++Curside >= MAX_SIDES_PER_SEGMENT)
133 Update_flags |= UF_ED_STATE_CHANGED;
141 Curside = MAX_SIDES_PER_SEGMENT-1;
142 Update_flags |= UF_ED_STATE_CHANGED;
147 // ---------- Copy current segment and side to marked segment and side ----------
149 int CopySegToMarked()
151 autosave_mine(mine_filename);
152 strcpy(undo_status[Autosave_count], "Mark Segment UNDONE.");
153 Markedsegp = Cursegp;
154 Markedside = Curside;
155 Update_flags |= UF_ED_STATE_CHANGED;
160 // ---------- select absolute face on segment ----------
165 Update_flags |= UF_ED_STATE_CHANGED;
173 Update_flags |= UF_ED_STATE_CHANGED;
181 Update_flags |= UF_ED_STATE_CHANGED;
189 Update_flags |= UF_ED_STATE_CHANGED;
197 Update_flags |= UF_ED_STATE_CHANGED;
205 Update_flags |= UF_ED_STATE_CHANGED;