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/*====================================================================*
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- Copyright (C) 2001 Leptonica. All rights reserved.
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- This software is distributed in the hope that it will be
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- useful, but with NO WARRANTY OF ANY KIND.
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- No author or distributor accepts responsibility to anyone for the
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- consequences of using this software, or for whether it serves any
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- particular purpose or works at all, unless he or she says so in
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- writing. Everyone is granted permission to copy, modify and
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- redistribute this source code, for commercial or non-commercial
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- purposes, with the following restrictions: (1) the origin of this
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- source code must not be misrepresented; (2) modified versions must
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- be plainly marked as such; and (3) this notice may not be removed
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- or altered from any source or modified source distribution.
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*====================================================================*/
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#ifndef LEPTONICA_CCBORD_H
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#define LEPTONICA_CCBORD_H
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* CCBord: represents a single connected component
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* CCBorda: an array of CCBord
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/* Use in ccbaStepChainsToPixCoords() */
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/* Use in ccbaGenerateSPGlobalLocs() */
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CCB_SAVE_TURNING_PTS = 2
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* (1) a minimally-clipped bitmap of the component (pix),
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* (2) a boxa consisting of:
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* for the primary component:
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* (xul, yul) pixel location in global coords
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* (w, h) of the bitmap
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* for the hole components:
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* (x, y) in relative coordinates in primary component
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* (w, h) of the hole border (which is 2 pixels
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* larger in each direction than the hole itself)
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* (3) a pta ('start') of the initial border pixel location for each
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* closed curve, all in relative coordinates of the primary
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* component. This is given for the primary component,
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* followed by the hole components, if any.
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* (4) a refcount of the ccbord; used internally when a ccbord
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* is accessed from a ccborda (array of ccbord)
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* (5) a ptaa for the chain code for the border in relative
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* coordinates, where the first pta is the exterior border
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* and all other pta are for interior borders (holes)
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* (6) a ptaa for the global pixel loc rendition of the border,
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* where the first pta is the exterior border and all other
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* pta are for interior borders (holes).
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* This is derived from the local or step chain code.
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* (7) a numaa for the chain code for the border as orientation
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* directions between successive border pixels, where
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* the first numa is the exterior border and all other
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* numa are for interior borders (holes). This is derived
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* from the local chain code. The 8 directions are 0 - 7.
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* (8) a pta for a single chain for each c.c., comprised of outer
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* and hole borders, plus cut paths between them, all in
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* (9) a pta for a single chain for each c.c., comprised of outer
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* and hole borders, plus cut paths between them, all in
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struct Pix *pix; /* component bitmap (min size) */
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struct Boxa *boxa; /* regions of each closed curve */
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struct Pta *start; /* initial border pixel locations */
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l_int32 refcount; /* number of handles; start at 1 */
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struct Ptaa *local; /* ptaa of chain pixels (local) */
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struct Ptaa *global; /* ptaa of chain pixels (global) */
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struct Numaa *step; /* numaa of chain code (step dir) */
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struct Pta *splocal; /* pta of single chain (local) */
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struct Pta *spglobal; /* pta of single chain (global) */
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typedef struct CCBord CCBORD;
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struct Pix *pix; /* input pix (may be null) */
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l_int32 w; /* width of pix */
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l_int32 h; /* height of pix */
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l_int32 n; /* number of ccbord in ptr array */
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l_int32 nalloc; /* number of ccbord ptrs allocated */
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struct CCBord **ccb; /* ccb ptr array */
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typedef struct CCBorda CCBORDA;
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#endif /* LEPTONICA_CCBORD_H */
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vs2010/include/leptonica/ccbord.h
