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/* $Id: mtspace.h,v 1.4 2004/03/28 03:06:39 haceaton Exp $ */
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* PCB, interactive printed circuit board design
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* Copyright (C) 1994,1995,1996 Thomas Nau
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* Copyright (C) 1998,1999,2000,2001 harry eaton
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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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* 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
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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* Contact addresses for paper mail and Email:
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* harry eaton, 6697 Buttonhole Ct, Columbia, MD 21044 USA
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* haceaton@aplcomm.jhuapl.edu
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/* this file, mtspace.h, was written and is
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* Copyright (c) 2001 C. Scott Ananian.
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/* prototypes for "empty space" routines (needed for via-space tracking
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#ifndef __MTSPACE_INCLUDED__
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#define __MTSPACE_INCLUDED__
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/* mtspace data structures are built on r-trees. */
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#include "vector.h" /* for vector_t in mtspace_query_rect prototype */
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typedef struct mtspace mtspace_t;
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typedef enum { FIXED, ODD, EVEN } mtspace_type_t;
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/* create an "empty space" representation with a shrunken boundry */
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mtspace_t * mtspace_create(const BoxType *bounds, BDimension keepaway);
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/* destroy an "empty space" representation. */
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void mtspace_destroy(mtspace_t **mtspacep);
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/* add a space-filler to the empty space representation. The given box
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* should *not* be bloated; it should be "true". The feature will fill
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* *at least* a radius of keepaway around it; if the mtspace 'keepaway'
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* parameter is larger than the specified keepaway, than that is used
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void mtspace_add(mtspace_t *mtspace,
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const BoxType *box, mtspace_type_t which, BDimension
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/* remove a space-filler from the empty space representation. The given box
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* should *not* be bloated; it should be "true". The feature will fill
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* *at least* a radius of keepaway around it; if the mtspace 'keepaway'
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* parameter is larger than the specified keepaway, than that is used
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void mtspace_remove(mtspace_t *mtspace,
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const BoxType *box, mtspace_type_t which,
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/* returns all empty spaces in 'region' which may hold a feature with the
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* mtspace feature_radius with the specified minimum keepaway. Completely
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* empty regions are appended to the free_space_vec vector; regions which
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* are filled by objects generated by the previous pass are appended to the
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* lo_conflict_space_vec vector, and regions which are filled by objects
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* generated during *this* pass are appended to the hi_conflict_space_vec
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* vector. The current pass identity is given by 'is_odd'. Regions which
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* are filled by fixed objects are not returned at all. */
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void mtspace_query_rect(mtspace_t *mtspace, const BoxType *region,
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BDimension radius, BDimension keepaway,
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vector_t *free_space_vec,
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vector_t *lo_conflict_space_vec,
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vector_t *hi_conflict_space_vec,
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#endif /* ! __MTSPACE_INCLUDED__ */
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src/mtspace.h
