Campbell Barton
f9e339ef00
scanfill remove-doubles pass assumes ordered edges (as with curves), otherwise it can hang. workaround this problem by skipping removing-doubles for mesh ngons, since this isnt such a common case as it is with curves and we can just not support it.
138 lines
3.9 KiB
C++
138 lines
3.9 KiB
C++
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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#ifndef __BLI_SCANFILL_H__
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#define __BLI_SCANFILL_H__
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/** \file BLI_scanfill.h
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* \ingroup bli
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* \since March 2001
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* \author nzc
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* \brief Filling meshes.
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*/
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struct ScanFillVert;
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct ScanFillContext {
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ListBase fillvertbase;
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ListBase filledgebase;
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ListBase fillfacebase;
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/* simple optimization for allocating thousands of small memory blocks
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* only to be used within loops, and not by one function at a time
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* free in the end, with argument '-1'
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*/
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#define MEM_ELEM_BLOCKSIZE 16384
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struct mem_elements *melem__cur;
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int melem__offs; /* the current free address */
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ListBase melem__lb;
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/* private */
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struct ScanFillVertLink *_scdata;
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} ScanFillContext;
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/* note; changing this also might affect the undo copy in editmesh.c */
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typedef struct ScanFillVert {
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struct ScanFillVert *next, *prev;
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union {
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struct ScanFillVert *v;
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void *p;
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intptr_t l;
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unsigned int u;
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} tmp;
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float co[3]; /* vertex location */
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float xy[2]; /* 2D copy of vertex location (using dominant axis) */
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unsigned int keyindex; /* original index #, for restoring key information */
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short poly_nr;
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unsigned char f, h;
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} ScanFillVert;
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typedef struct ScanFillEdge {
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struct ScanFillEdge *next, *prev;
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struct ScanFillVert *v1, *v2;
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short poly_nr;
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unsigned char f;
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union {
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unsigned char c;
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} tmp;
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} ScanFillEdge;
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typedef struct ScanFillFace {
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struct ScanFillFace *next, *prev;
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struct ScanFillVert *v1, *v2, *v3;
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} ScanFillFace;
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/* scanfill.c: used in displist only... */
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struct ScanFillVert *BLI_scanfill_vert_add(ScanFillContext *sf_ctx, const float vec[3]);
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struct ScanFillEdge *BLI_scanfill_edge_add(ScanFillContext *sf_ctx, struct ScanFillVert *v1, struct ScanFillVert *v2);
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enum {
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BLI_SCANFILL_CALC_QUADTRI_FASTPATH = (1 << 0),
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/* note: using BLI_SCANFILL_CALC_REMOVE_DOUBLES
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* Assumes ordered edges, otherwise we risk an eternal loop
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* removing double verts. - campbell */
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BLI_SCANFILL_CALC_REMOVE_DOUBLES = (1 << 1),
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};
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int BLI_scanfill_begin(ScanFillContext *sf_ctx);
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int BLI_scanfill_calc(ScanFillContext *sf_ctx, const int flag);
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int BLI_scanfill_calc_ex(ScanFillContext *sf_ctx, const int flag,
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const float nor_proj[3]);
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void BLI_scanfill_end(ScanFillContext *sf_ctx);
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/* These callbacks are needed to make the lib finction properly */
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/**
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* Set a function taking a (char *) as argument to flag errors. If the
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* callback is not set, the error is discarded.
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* \param f The function to use as callback
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* \attention used in creator.c
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*/
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void BLI_setErrorCallBack(void (*f)(const char *));
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/**
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* Set a function to be able to interrupt the execution of processing
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* in this module. If the function returns true, the execution will
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* terminate gracefully. If the callback is not set, interruption is
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* not possible.
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* \param f The function to use as callback
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* \attention used in creator.c
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*/
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void BLI_setInterruptCallBack(int (*f)(void));
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#ifdef __cplusplus
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}
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#endif
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#endif
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