mirror of http://192.168.1.51:8099/lmh188/twain3.0
122 lines
5.3 KiB
C
122 lines
5.3 KiB
C
/*====================================================================*
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- Copyright (C) 2001 Leptonica. All rights reserved.
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-
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- Redistribution and use in source and binary forms, with or without
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- modification, are permitted provided that the following conditions
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- are met:
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- 1. Redistributions of source code must retain the above copyright
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- notice, this list of conditions and the following disclaimer.
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- 2. Redistributions in binary form must reproduce the above
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- copyright notice, this list of conditions and the following
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- disclaimer in the documentation and/or other materials
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- provided with the distribution.
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-
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- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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- ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANY
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- CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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- OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*====================================================================*/
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#ifndef LEPTONICA_CCBORD_H
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#define LEPTONICA_CCBORD_H
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/*!
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* \file ccbord.h
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*
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* <pre>
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* CCBord: represents a single connected component
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* CCBorda: an array of CCBord
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* </pre>
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*/
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/*! Use in ccbaStepChainsToPixCoords() */
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/*! CCB Coords */
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enum {
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CCB_LOCAL_COORDS = 1,
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CCB_GLOBAL_COORDS = 2
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};
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/*! Use in ccbaGenerateSPGlobalLocs() */
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/*! CCB Points */
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enum {
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CCB_SAVE_ALL_PTS = 1,
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CCB_SAVE_TURNING_PTS = 2
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};
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/*!
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* <pre>
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* CCBord contains:
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*
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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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* local coords.
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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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* global coords.
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* </pre>
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*/
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struct CCBord
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{
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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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};
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typedef struct CCBord CCBORD;
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/*! Array of CCBord */
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struct CCBorda
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{
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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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};
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typedef struct CCBorda CCBORDA;
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#endif /* LEPTONICA_CCBORD_H */
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