+++ /dev/null
-/*M///////////////////////////////////////////////////////////////////////////////////////
-//
-// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
-//
-// By downloading, copying, installing or using the software you agree to this license.
-// If you do not agree to this license, do not download, install,
-// copy or use the software.
-//
-//
-// Intel License Agreement
-// For Open Source Computer Vision Library
-//
-// Copyright (C) 2000, Intel Corporation, all rights reserved.
-// Third party copyrights are property of their respective owners.
-//
-// Redistribution and use in source and binary forms, with or without modification,
-// are permitted provided that the following conditions are met:
-//
-// * Redistribution's of source code must retain the above copyright notice,
-// this list of conditions and the following disclaimer.
-//
-// * Redistribution's in binary form must reproduce the above copyright notice,
-// this list of conditions and the following disclaimer in the documentation
-// and/or other materials provided with the distribution.
-//
-// * The name of Intel Corporation may not be used to endorse or promote products
-// derived from this software without specific prior written permission.
-//
-// This software is provided by the copyright holders and contributors "as is" and
-// any express or implied warranties, including, but not limited to, the implied
-// warranties of merchantability and fitness for a particular purpose are disclaimed.
-// In no event shall the Intel Corporation or contributors be liable for any direct,
-// indirect, incidental, special, exemplary, or consequential damages
-// (including, but not limited to, procurement of substitute goods or services;
-// loss of use, data, or profits; or business interruption) however caused
-// and on any theory of liability, whether in contract, strict liability,
-// or tort (including negligence or otherwise) arising in any way out of
-// the use of this software, even if advised of the possibility of such damage.
-//
-//M*/
-#include "_cxcore.h"
-
-#define XY_SHIFT 16
-#define XY_ONE (1 << XY_SHIFT)
-
-#define CV_DRAWING_STORAGE_BLOCK ((1 << 12) - 256)
-
-typedef struct CvPolyEdge
-{
- int x, dx;
- union
- {
- struct CvPolyEdge *next;
- int y0;
- };
- int y1;
-}
-CvPolyEdge;
-
-static void
-icvCollectPolyEdges( CvMat* img, CvSeq* v, CvContour* edges,
- const void* color, int line_type,
- int shift, CvPoint offset=cvPoint(0,0) );
-
-static void
-icvFillEdgeCollection( CvMat* img, CvContour* edges, const void* color );
-
-static void
-icvPolyLine( CvMat* img, CvPoint *v, int count, int closed,
- const void* color, int thickness, int line_type, int shift );
-
-static void
-icvFillConvexPoly( CvMat* img, CvPoint* v, int npts,
- const void* color, int line_type, int shift );
-
-/****************************************************************************************\
-* Lines *
-\****************************************************************************************/
-
-CV_IMPL int
-cvClipLine( CvSize img_size, CvPoint* pt1, CvPoint* pt2 )
-{
- int result = 0;
-
- CV_FUNCNAME( "cvClipLine" );
-
- __BEGIN__;
-
- int x1, y1, x2, y2;
- int c1, c2;
- int right = img_size.width-1, bottom = img_size.height-1;
-
- if( !pt1 || !pt2 )
- CV_ERROR( CV_StsNullPtr, "One of point pointers is NULL" );
-
- if( right < 0 || bottom < 0 )
- CV_ERROR( CV_StsOutOfRange, "Image width or height are negative" );
-
- x1 = pt1->x; y1 = pt1->y; x2 = pt2->x; y2 = pt2->y;
- c1 = (x1 < 0) + (x1 > right) * 2 + (y1 < 0) * 4 + (y1 > bottom) * 8;
- c2 = (x2 < 0) + (x2 > right) * 2 + (y2 < 0) * 4 + (y2 > bottom) * 8;
-
- if( (c1 & c2) == 0 && (c1 | c2) != 0 )
- {
- int a;
-
- if( c1 & 12 )
- {
- a = c1 < 8 ? 0 : bottom;
- x1 += (int) (((int64) (a - y1)) * (x2 - x1) / (y2 - y1));
- y1 = a;
- c1 = (x1 < 0) + (x1 > right) * 2;
- }
- if( c2 & 12 )
- {
- a = c2 < 8 ? 0 : bottom;
- x2 += (int) (((int64) (a - y2)) * (x2 - x1) / (y2 - y1));
- y2 = a;
- c2 = (x2 < 0) + (x2 > right) * 2;
- }
- if( (c1 & c2) == 0 && (c1 | c2) != 0 )
- {
- if( c1 )
- {
- a = c1 == 1 ? 0 : right;
- y1 += (int) (((int64) (a - x1)) * (y2 - y1) / (x2 - x1));
- x1 = a;
- c1 = 0;
- }
- if( c2 )
- {
- a = c2 == 1 ? 0 : right;
- y2 += (int) (((int64) (a - x2)) * (y2 - y1) / (x2 - x1));
- x2 = a;
- c2 = 0;
- }
- }
-
- assert( (c1 & c2) != 0 || (x1 | y1 | x2 | y2) >= 0 );
-
- pt1->x = x1;
- pt1->y = y1;
- pt2->x = x2;
- pt2->y = y2;
- }
-
- result = ( c1 | c2 ) == 0;
-
- __END__;
-
- return result;
-}
-
-
-/*
- Initializes line iterator.
- Returns number of points on the line or negative number if error.
-*/
-CV_IMPL int
-cvInitLineIterator( const CvArr* img, CvPoint pt1, CvPoint pt2,
- CvLineIterator* iterator, int connectivity,
- int left_to_right )
-{
- int count = -1;
-
- CV_FUNCNAME( "cvInitLineIterator" );
-
- __BEGIN__;
-
- CvMat stub, *mat = (CvMat*)img;
- int dx, dy, s;
- int bt_pix, bt_pix0, step;
-
- if( !CV_IS_MAT(mat) )
- CV_CALL( mat = cvGetMat( mat, &stub ));
-
- if( !iterator )
- CV_ERROR( CV_StsNullPtr, "Pointer to the iterator state is NULL" );
-
- if( connectivity != 8 && connectivity != 4 )
- CV_ERROR( CV_StsBadArg, "Connectivity must be 8 or 4" );
-
- if( (unsigned)pt1.x >= (unsigned)(mat->width) ||
- (unsigned)pt2.x >= (unsigned)(mat->width) ||
- (unsigned)pt1.y >= (unsigned)(mat->height) ||
- (unsigned)pt2.y >= (unsigned)(mat->height) )
- CV_ERROR( CV_StsBadPoint,
- "One of the ending points is outside of the image, use cvClipLine" );
-
- bt_pix0 = bt_pix = CV_ELEM_SIZE(mat->type);
- step = mat->step;
-
- dx = pt2.x - pt1.x;
- dy = pt2.y - pt1.y;
- s = dx < 0 ? -1 : 0;
-
- if( left_to_right )
- {
- dx = (dx ^ s) - s;
- dy = (dy ^ s) - s;
- pt1.x ^= (pt1.x ^ pt2.x) & s;
- pt1.y ^= (pt1.y ^ pt2.y) & s;
- }
- else
- {
- dx = (dx ^ s) - s;
- bt_pix = (bt_pix ^ s) - s;
- }
-
- iterator->ptr = (uchar*)(mat->data.ptr + pt1.y * step + pt1.x * bt_pix0);
-
- s = dy < 0 ? -1 : 0;
- dy = (dy ^ s) - s;
- step = (step ^ s) - s;
-
- s = dy > dx ? -1 : 0;
-
- /* conditional swaps */
- dx ^= dy & s;
- dy ^= dx & s;
- dx ^= dy & s;
-
- bt_pix ^= step & s;
- step ^= bt_pix & s;
- bt_pix ^= step & s;
-
- if( connectivity == 8 )
- {
- assert( dx >= 0 && dy >= 0 );
-
- iterator->err = dx - (dy + dy);
- iterator->plus_delta = dx + dx;
- iterator->minus_delta = -(dy + dy);
- iterator->plus_step = step;
- iterator->minus_step = bt_pix;
- count = dx + 1;
- }
- else /* connectivity == 4 */
- {
- assert( dx >= 0 && dy >= 0 );
-
- iterator->err = 0;
- iterator->plus_delta = (dx + dx) + (dy + dy);
- iterator->minus_delta = -(dy + dy);
- iterator->plus_step = step - bt_pix;
- iterator->minus_step = bt_pix;
- count = dx + dy + 1;
- }
-
- __END__;
-
- return count;
-}
-
-static void
-icvLine( CvMat* mat, CvPoint pt1, CvPoint pt2,
- const void* color, int connectivity = 8 )
-{
- if( cvClipLine( cvGetMatSize(mat), &pt1, &pt2 ))
- {
- CvLineIterator iterator;
- int pix_size = CV_ELEM_SIZE(mat->type);
- int i, count;
-
- if( connectivity == 0 )
- connectivity = 8;
- if( connectivity == 1 )
- connectivity = 4;
-
- count = cvInitLineIterator( mat, pt1, pt2, &iterator, connectivity, 1 );
-
- for( i = 0; i < count; i++ )
- {
- CV_MEMCPY_AUTO( iterator.ptr, color, pix_size );
- CV_NEXT_LINE_POINT( iterator );
- }
- }
-}
-
-
-/* Correction table depent on the slope */
-static const uchar icvSlopeCorrTable[] = {
- 181, 181, 181, 182, 182, 183, 184, 185, 187, 188, 190, 192, 194, 196, 198, 201,
- 203, 206, 209, 211, 214, 218, 221, 224, 227, 231, 235, 238, 242, 246, 250, 254
-};
-
-/* Gaussian for antialiasing filter */
-static const int icvFilterTable[] = {
- 168, 177, 185, 194, 202, 210, 218, 224, 231, 236, 241, 246, 249, 252, 254, 254,
- 254, 254, 252, 249, 246, 241, 236, 231, 224, 218, 210, 202, 194, 185, 177, 168,
- 158, 149, 140, 131, 122, 114, 105, 97, 89, 82, 75, 68, 62, 56, 50, 45,
- 40, 36, 32, 28, 25, 22, 19, 16, 14, 12, 11, 9, 8, 7, 5, 5
-};
-
-static void
-icvLineAA( CvMat* img, CvPoint pt1, CvPoint pt2,
- const void* color )
-{
- int dx, dy;
- int ecount, scount = 0;
- int slope;
- int ax, ay;
- int x_step, y_step;
- int i, j;
- int ep_table[9];
- int cb = ((uchar*)color)[0], cg = ((uchar*)color)[1], cr = ((uchar*)color)[2];
- int _cb, _cg, _cr;
- int nch = CV_MAT_CN( img->type );
- uchar* ptr = (uchar*)(img->data.ptr);
- int step = img->step;
- CvSize size = cvGetMatSize( img );
-
- assert( img && (nch == 1 || nch == 3) && CV_MAT_DEPTH(img->type) == CV_8U );
-
- pt1.x -= XY_ONE*2;
- pt1.y -= XY_ONE*2;
- pt2.x -= XY_ONE*2;
- pt2.y -= XY_ONE*2;
- ptr += img->step*2 + 2*nch;
-
- size.width = ((size.width - 5) << XY_SHIFT) + 1;
- size.height = ((size.height - 5) << XY_SHIFT) + 1;
-
- if( !cvClipLine( size, &pt1, &pt2 ))
- return;
-
- dx = pt2.x - pt1.x;
- dy = pt2.y - pt1.y;
-
- j = dx < 0 ? -1 : 0;
- ax = (dx ^ j) - j;
- i = dy < 0 ? -1 : 0;
- ay = (dy ^ i) - i;
-
- if( ax > ay )
- {
- dx = ax;
- dy = (dy ^ j) - j;
- pt1.x ^= pt2.x & j;
- pt2.x ^= pt1.x & j;
- pt1.x ^= pt2.x & j;
- pt1.y ^= pt2.y & j;
- pt2.y ^= pt1.y & j;
- pt1.y ^= pt2.y & j;
-
- x_step = XY_ONE;
- y_step = (int) (((int64) dy << XY_SHIFT) / (ax | 1));
- pt2.x += XY_ONE;
- ecount = (pt2.x >> XY_SHIFT) - (pt1.x >> XY_SHIFT);
- j = -(pt1.x & (XY_ONE - 1));
- pt1.y += (int) ((((int64) y_step) * j) >> XY_SHIFT) + (XY_ONE >> 1);
- slope = (y_step >> (XY_SHIFT - 5)) & 0x3f;
- slope ^= (y_step < 0 ? 0x3f : 0);
-
- /* Get 4-bit fractions for end-point adjustments */
- i = (pt1.x >> (XY_SHIFT - 7)) & 0x78;
- j = (pt2.x >> (XY_SHIFT - 7)) & 0x78;
- }
- else
- {
- dy = ay;
- dx = (dx ^ i) - i;
- pt1.x ^= pt2.x & i;
- pt2.x ^= pt1.x & i;
- pt1.x ^= pt2.x & i;
- pt1.y ^= pt2.y & i;
- pt2.y ^= pt1.y & i;
- pt1.y ^= pt2.y & i;
-
- x_step = (int) (((int64) dx << XY_SHIFT) / (ay | 1));
- y_step = XY_ONE;
- pt2.y += XY_ONE;
- ecount = (pt2.y >> XY_SHIFT) - (pt1.y >> XY_SHIFT);
- j = -(pt1.y & (XY_ONE - 1));
- pt1.x += (int) ((((int64) x_step) * j) >> XY_SHIFT) + (XY_ONE >> 1);
- slope = (x_step >> (XY_SHIFT - 5)) & 0x3f;
- slope ^= (x_step < 0 ? 0x3f : 0);
-
- /* Get 4-bit fractions for end-point adjustments */
- i = (pt1.y >> (XY_SHIFT - 7)) & 0x78;
- j = (pt2.y >> (XY_SHIFT - 7)) & 0x78;
- }
-
- slope = (slope & 0x20) ? 0x100 : icvSlopeCorrTable[slope];
-
- /* Calc end point correction table */
- {
- int t0 = slope << 7;
- int t1 = ((0x78 - i) | 4) * slope;
- int t2 = (j | 4) * slope;
-
- ep_table[0] = 0;
- ep_table[8] = slope;
- ep_table[1] = ep_table[3] = ((((j - i) & 0x78) | 4) * slope >> 8) & 0x1ff;
- ep_table[2] = (t1 >> 8) & 0x1ff;
- ep_table[4] = ((((j - i) + 0x80) | 4) * slope >> 8) & 0x1ff;
- ep_table[5] = ((t1 + t0) >> 8) & 0x1ff;
- ep_table[6] = (t2 >> 8) & 0x1ff;
- ep_table[7] = ((t2 + t0) >> 8) & 0x1ff;
- }
-
- if( nch == 3 )
- {
- #define ICV_PUT_POINT() \
- { \
- _cb = tptr[0]; \
- _cb += ((cb - _cb)*a + 127)>> 8;\
- _cg = tptr[1]; \
- _cg += ((cg - _cg)*a + 127)>> 8;\
- _cr = tptr[2]; \
- _cr += ((cr - _cr)*a + 127)>> 8;\
- tptr[0] = (uchar)_cb; \
- tptr[1] = (uchar)_cg; \
- tptr[2] = (uchar)_cr; \
- }
- if( ax > ay )
- {
- ptr += (pt1.x >> XY_SHIFT) * 3;
-
- while( ecount >= 0 )
- {
- uchar *tptr = ptr + ((pt1.y >> XY_SHIFT) - 1) * step;
-
- int ep_corr = ep_table[(((scount >= 2) + 1) & (scount | 2)) * 3 +
- (((ecount >= 2) + 1) & (ecount | 2))];
- int a, dist = (pt1.y >> (XY_SHIFT - 5)) & 31;
-
- a = (ep_corr * icvFilterTable[dist + 32] >> 8) & 0xff;
- ICV_PUT_POINT();
- ICV_PUT_POINT();
-
- tptr += step;
- a = (ep_corr * icvFilterTable[dist] >> 8) & 0xff;
- ICV_PUT_POINT();
- ICV_PUT_POINT();
-
- tptr += step;
- a = (ep_corr * icvFilterTable[63 - dist] >> 8) & 0xff;
- ICV_PUT_POINT();
- ICV_PUT_POINT();
-
- pt1.y += y_step;
- ptr += 3;
- scount++;
- ecount--;
- }
- }
- else
- {
- ptr += (pt1.y >> XY_SHIFT) * step;
-
- while( ecount >= 0 )
- {
- uchar *tptr = ptr + ((pt1.x >> XY_SHIFT) - 1) * 3;
-
- int ep_corr = ep_table[(((scount >= 2) + 1) & (scount | 2)) * 3 +
- (((ecount >= 2) + 1) & (ecount | 2))];
- int a, dist = (pt1.x >> (XY_SHIFT - 5)) & 31;
-
- a = (ep_corr * icvFilterTable[dist + 32] >> 8) & 0xff;
- ICV_PUT_POINT();
- ICV_PUT_POINT();
-
- tptr += 3;
- a = (ep_corr * icvFilterTable[dist] >> 8) & 0xff;
- ICV_PUT_POINT();
- ICV_PUT_POINT();
-
- tptr += 3;
- a = (ep_corr * icvFilterTable[63 - dist] >> 8) & 0xff;
- ICV_PUT_POINT();
- ICV_PUT_POINT();
-
- pt1.x += x_step;
- ptr += step;
- scount++;
- ecount--;
- }
- }
- #undef ICV_PUT_POINT
- }
- else
- {
- #define ICV_PUT_POINT() \
- { \
- _cb = tptr[0]; \
- _cb += ((cb - _cb)*a + 127)>> 8;\
- tptr[0] = (uchar)_cb; \
- }
-
- if( ax > ay )
- {
- ptr += (pt1.x >> XY_SHIFT);
-
- while( ecount >= 0 )
- {
- uchar *tptr = ptr + ((pt1.y >> XY_SHIFT) - 1) * step;
-
- int ep_corr = ep_table[(((scount >= 2) + 1) & (scount | 2)) * 3 +
- (((ecount >= 2) + 1) & (ecount | 2))];
- int a, dist = (pt1.y >> (XY_SHIFT - 5)) & 31;
-
- a = (ep_corr * icvFilterTable[dist + 32] >> 8) & 0xff;
- ICV_PUT_POINT();
- ICV_PUT_POINT();
-
- tptr += step;
- a = (ep_corr * icvFilterTable[dist] >> 8) & 0xff;
- ICV_PUT_POINT();
- ICV_PUT_POINT();
-
- tptr += step;
- a = (ep_corr * icvFilterTable[63 - dist] >> 8) & 0xff;
- ICV_PUT_POINT();
- ICV_PUT_POINT();
-
- pt1.y += y_step;
- ptr++;
- scount++;
- ecount--;
- }
- }
- else
- {
- ptr += (pt1.y >> XY_SHIFT) * step;
-
- while( ecount >= 0 )
- {
- uchar *tptr = ptr + ((pt1.x >> XY_SHIFT) - 1);
-
- int ep_corr = ep_table[(((scount >= 2) + 1) & (scount | 2)) * 3 +
- (((ecount >= 2) + 1) & (ecount | 2))];
- int a, dist = (pt1.x >> (XY_SHIFT - 5)) & 31;
-
- a = (ep_corr * icvFilterTable[dist + 32] >> 8) & 0xff;
- ICV_PUT_POINT();
- ICV_PUT_POINT();
-
- tptr++;
- a = (ep_corr * icvFilterTable[dist] >> 8) & 0xff;
- ICV_PUT_POINT();
- ICV_PUT_POINT();
-
- tptr++;
- a = (ep_corr * icvFilterTable[63 - dist] >> 8) & 0xff;
- ICV_PUT_POINT();
- ICV_PUT_POINT();
-
- pt1.x += x_step;
- ptr += step;
- scount++;
- ecount--;
- }
- }
- #undef ICV_PUT_POINT
- }
-}
-
-
-static void
-icvLine2( CvMat* img, CvPoint pt1, CvPoint pt2, const void* color )
-{
- int dx, dy;
- int ecount;
- int ax, ay;
- int i, j;
- int x_step, y_step;
- int cb = ((uchar*)color)[0];
- int cg = ((uchar*)color)[1];
- int cr = ((uchar*)color)[2];
- int pix_size = CV_ELEM_SIZE( img->type );
- uchar *ptr = (uchar*)(img->data.ptr), *tptr;
- int step = img->step;
- CvSize size = cvGetMatSize( img );
-
- //assert( img && (nch == 1 || nch == 3) && CV_MAT_DEPTH(img->type) == CV_8U );
-
- pt1.x -= XY_ONE*2;
- pt1.y -= XY_ONE*2;
- pt2.x -= XY_ONE*2;
- pt2.y -= XY_ONE*2;
- ptr += img->step*2 + 2*pix_size;
-
- size.width = ((size.width - 5) << XY_SHIFT) + 1;
- size.height = ((size.height - 5) << XY_SHIFT) + 1;
-
- if( !cvClipLine( size, &pt1, &pt2 ))
- return;
-
- dx = pt2.x - pt1.x;
- dy = pt2.y - pt1.y;
-
- j = dx < 0 ? -1 : 0;
- ax = (dx ^ j) - j;
- i = dy < 0 ? -1 : 0;
- ay = (dy ^ i) - i;
-
- if( ax > ay )
- {
- dx = ax;
- dy = (dy ^ j) - j;
- pt1.x ^= pt2.x & j;
- pt2.x ^= pt1.x & j;
- pt1.x ^= pt2.x & j;
- pt1.y ^= pt2.y & j;
- pt2.y ^= pt1.y & j;
- pt1.y ^= pt2.y & j;
-
- x_step = XY_ONE;
- y_step = (int) (((int64) dy << XY_SHIFT) / (ax | 1));
- ecount = (pt2.x - pt1.x) >> XY_SHIFT;
- }
- else
- {
- dy = ay;
- dx = (dx ^ i) - i;
- pt1.x ^= pt2.x & i;
- pt2.x ^= pt1.x & i;
- pt1.x ^= pt2.x & i;
- pt1.y ^= pt2.y & i;
- pt2.y ^= pt1.y & i;
- pt1.y ^= pt2.y & i;
-
- x_step = (int) (((int64) dx << XY_SHIFT) / (ay | 1));
- y_step = XY_ONE;
- ecount = (pt2.y - pt1.y) >> XY_SHIFT;
- }
-
- pt1.x += (XY_ONE >> 1);
- pt1.y += (XY_ONE >> 1);
-
- if( pix_size == 3 )
- {
- #define ICV_PUT_POINT() \
- { \
- tptr[0] = (uchar)cb; \
- tptr[1] = (uchar)cg; \
- tptr[2] = (uchar)cr; \
- }
-
- tptr = ptr + ((pt2.x + (XY_ONE >> 1))>> XY_SHIFT)*3 +
- ((pt2.y + (XY_ONE >> 1)) >> XY_SHIFT)*step;
- ICV_PUT_POINT();
-
- if( ax > ay )
- {
- ptr += (pt1.x >> XY_SHIFT) * 3;
-
- while( ecount >= 0 )
- {
- tptr = ptr + (pt1.y >> XY_SHIFT) * step;
- ICV_PUT_POINT();
- pt1.y += y_step;
- ptr += 3;
- ecount--;
- }
- }
- else
- {
- ptr += (pt1.y >> XY_SHIFT) * step;
-
- while( ecount >= 0 )
- {
- tptr = ptr + (pt1.x >> XY_SHIFT) * 3;
- ICV_PUT_POINT();
- pt1.x += x_step;
- ptr += step;
- ecount--;
- }
- }
-
- #undef ICV_PUT_POINT
- }
- else if( pix_size == 1 )
- {
- #define ICV_PUT_POINT() \
- { \
- tptr[0] = (uchar)cb; \
- }
-
- tptr = ptr + ((pt2.x + (XY_ONE >> 1))>> XY_SHIFT) +
- ((pt2.y + (XY_ONE >> 1)) >> XY_SHIFT)*step;
- ICV_PUT_POINT();
-
- if( ax > ay )
- {
- ptr += (pt1.x >> XY_SHIFT);
-
- while( ecount >= 0 )
- {
- tptr = ptr + (pt1.y >> XY_SHIFT) * step;
- ICV_PUT_POINT();
- pt1.y += y_step;
- ptr++;
- ecount--;
- }
- }
- else
- {
- ptr += (pt1.y >> XY_SHIFT) * step;
-
- while( ecount >= 0 )
- {
- tptr = ptr + (pt1.x >> XY_SHIFT);
- ICV_PUT_POINT();
- pt1.x += x_step;
- ptr += step;
- ecount--;
- }
- }
- #undef ICV_PUT_POINT
- }
- else
- {
- #define ICV_PUT_POINT() \
- for( j = 0; j < pix_size; j++ ) \
- tptr[j] = ((uchar*)color)[j];
-
- tptr = ptr + ((pt2.x + (XY_ONE >> 1))>> XY_SHIFT)*pix_size +
- ((pt2.y + (XY_ONE >> 1)) >> XY_SHIFT)*step;
- ICV_PUT_POINT();
-
- if( ax > ay )
- {
- ptr += (pt1.x >> XY_SHIFT) * pix_size;
-
- while( ecount >= 0 )
- {
- tptr = ptr + (pt1.y >> XY_SHIFT) * step;
- ICV_PUT_POINT();
- pt1.y += y_step;
- ptr += pix_size;
- ecount--;
- }
- }
- else
- {
- ptr += (pt1.y >> XY_SHIFT) * step;
-
- while( ecount >= 0 )
- {
- tptr = ptr + (pt1.x >> XY_SHIFT) * pix_size;
- ICV_PUT_POINT();
- pt1.x += x_step;
- ptr += step;
- ecount--;
- }
- }
-
- #undef ICV_PUT_POINT
- }
-}
-
-
-/****************************************************************************************\
-* Antialiazed Elliptic Arcs via Antialiazed Lines *
-\****************************************************************************************/
-
-static const float icvSinTable[] =
- { 0.0000000f, 0.0174524f, 0.0348995f, 0.0523360f, 0.0697565f, 0.0871557f,
- 0.1045285f, 0.1218693f, 0.1391731f, 0.1564345f, 0.1736482f, 0.1908090f,
- 0.2079117f, 0.2249511f, 0.2419219f, 0.2588190f, 0.2756374f, 0.2923717f,
- 0.3090170f, 0.3255682f, 0.3420201f, 0.3583679f, 0.3746066f, 0.3907311f,
- 0.4067366f, 0.4226183f, 0.4383711f, 0.4539905f, 0.4694716f, 0.4848096f,
- 0.5000000f, 0.5150381f, 0.5299193f, 0.5446390f, 0.5591929f, 0.5735764f,
- 0.5877853f, 0.6018150f, 0.6156615f, 0.6293204f, 0.6427876f, 0.6560590f,
- 0.6691306f, 0.6819984f, 0.6946584f, 0.7071068f, 0.7193398f, 0.7313537f,
- 0.7431448f, 0.7547096f, 0.7660444f, 0.7771460f, 0.7880108f, 0.7986355f,
- 0.8090170f, 0.8191520f, 0.8290376f, 0.8386706f, 0.8480481f, 0.8571673f,
- 0.8660254f, 0.8746197f, 0.8829476f, 0.8910065f, 0.8987940f, 0.9063078f,
- 0.9135455f, 0.9205049f, 0.9271839f, 0.9335804f, 0.9396926f, 0.9455186f,
- 0.9510565f, 0.9563048f, 0.9612617f, 0.9659258f, 0.9702957f, 0.9743701f,
- 0.9781476f, 0.9816272f, 0.9848078f, 0.9876883f, 0.9902681f, 0.9925462f,
- 0.9945219f, 0.9961947f, 0.9975641f, 0.9986295f, 0.9993908f, 0.9998477f,
- 1.0000000f, 0.9998477f, 0.9993908f, 0.9986295f, 0.9975641f, 0.9961947f,
- 0.9945219f, 0.9925462f, 0.9902681f, 0.9876883f, 0.9848078f, 0.9816272f,
- 0.9781476f, 0.9743701f, 0.9702957f, 0.9659258f, 0.9612617f, 0.9563048f,
- 0.9510565f, 0.9455186f, 0.9396926f, 0.9335804f, 0.9271839f, 0.9205049f,
- 0.9135455f, 0.9063078f, 0.8987940f, 0.8910065f, 0.8829476f, 0.8746197f,
- 0.8660254f, 0.8571673f, 0.8480481f, 0.8386706f, 0.8290376f, 0.8191520f,
- 0.8090170f, 0.7986355f, 0.7880108f, 0.7771460f, 0.7660444f, 0.7547096f,
- 0.7431448f, 0.7313537f, 0.7193398f, 0.7071068f, 0.6946584f, 0.6819984f,
- 0.6691306f, 0.6560590f, 0.6427876f, 0.6293204f, 0.6156615f, 0.6018150f,
- 0.5877853f, 0.5735764f, 0.5591929f, 0.5446390f, 0.5299193f, 0.5150381f,
- 0.5000000f, 0.4848096f, 0.4694716f, 0.4539905f, 0.4383711f, 0.4226183f,
- 0.4067366f, 0.3907311f, 0.3746066f, 0.3583679f, 0.3420201f, 0.3255682f,
- 0.3090170f, 0.2923717f, 0.2756374f, 0.2588190f, 0.2419219f, 0.2249511f,
- 0.2079117f, 0.1908090f, 0.1736482f, 0.1564345f, 0.1391731f, 0.1218693f,
- 0.1045285f, 0.0871557f, 0.0697565f, 0.0523360f, 0.0348995f, 0.0174524f,
- 0.0000000f, -0.0174524f, -0.0348995f, -0.0523360f, -0.0697565f, -0.0871557f,
- -0.1045285f, -0.1218693f, -0.1391731f, -0.1564345f, -0.1736482f, -0.1908090f,
- -0.2079117f, -0.2249511f, -0.2419219f, -0.2588190f, -0.2756374f, -0.2923717f,
- -0.3090170f, -0.3255682f, -0.3420201f, -0.3583679f, -0.3746066f, -0.3907311f,
- -0.4067366f, -0.4226183f, -0.4383711f, -0.4539905f, -0.4694716f, -0.4848096f,
- -0.5000000f, -0.5150381f, -0.5299193f, -0.5446390f, -0.5591929f, -0.5735764f,
- -0.5877853f, -0.6018150f, -0.6156615f, -0.6293204f, -0.6427876f, -0.6560590f,
- -0.6691306f, -0.6819984f, -0.6946584f, -0.7071068f, -0.7193398f, -0.7313537f,
- -0.7431448f, -0.7547096f, -0.7660444f, -0.7771460f, -0.7880108f, -0.7986355f,
- -0.8090170f, -0.8191520f, -0.8290376f, -0.8386706f, -0.8480481f, -0.8571673f,
- -0.8660254f, -0.8746197f, -0.8829476f, -0.8910065f, -0.8987940f, -0.9063078f,
- -0.9135455f, -0.9205049f, -0.9271839f, -0.9335804f, -0.9396926f, -0.9455186f,
- -0.9510565f, -0.9563048f, -0.9612617f, -0.9659258f, -0.9702957f, -0.9743701f,
- -0.9781476f, -0.9816272f, -0.9848078f, -0.9876883f, -0.9902681f, -0.9925462f,
- -0.9945219f, -0.9961947f, -0.9975641f, -0.9986295f, -0.9993908f, -0.9998477f,
- -1.0000000f, -0.9998477f, -0.9993908f, -0.9986295f, -0.9975641f, -0.9961947f,
- -0.9945219f, -0.9925462f, -0.9902681f, -0.9876883f, -0.9848078f, -0.9816272f,
- -0.9781476f, -0.9743701f, -0.9702957f, -0.9659258f, -0.9612617f, -0.9563048f,
- -0.9510565f, -0.9455186f, -0.9396926f, -0.9335804f, -0.9271839f, -0.9205049f,
- -0.9135455f, -0.9063078f, -0.8987940f, -0.8910065f, -0.8829476f, -0.8746197f,
- -0.8660254f, -0.8571673f, -0.8480481f, -0.8386706f, -0.8290376f, -0.8191520f,
- -0.8090170f, -0.7986355f, -0.7880108f, -0.7771460f, -0.7660444f, -0.7547096f,
- -0.7431448f, -0.7313537f, -0.7193398f, -0.7071068f, -0.6946584f, -0.6819984f,
- -0.6691306f, -0.6560590f, -0.6427876f, -0.6293204f, -0.6156615f, -0.6018150f,
- -0.5877853f, -0.5735764f, -0.5591929f, -0.5446390f, -0.5299193f, -0.5150381f,
- -0.5000000f, -0.4848096f, -0.4694716f, -0.4539905f, -0.4383711f, -0.4226183f,
- -0.4067366f, -0.3907311f, -0.3746066f, -0.3583679f, -0.3420201f, -0.3255682f,
- -0.3090170f, -0.2923717f, -0.2756374f, -0.2588190f, -0.2419219f, -0.2249511f,
- -0.2079117f, -0.1908090f, -0.1736482f, -0.1564345f, -0.1391731f, -0.1218693f,
- -0.1045285f, -0.0871557f, -0.0697565f, -0.0523360f, -0.0348995f, -0.0174524f,
- -0.0000000f, 0.0174524f, 0.0348995f, 0.0523360f, 0.0697565f, 0.0871557f,
- 0.1045285f, 0.1218693f, 0.1391731f, 0.1564345f, 0.1736482f, 0.1908090f,
- 0.2079117f, 0.2249511f, 0.2419219f, 0.2588190f, 0.2756374f, 0.2923717f,
- 0.3090170f, 0.3255682f, 0.3420201f, 0.3583679f, 0.3746066f, 0.3907311f,
- 0.4067366f, 0.4226183f, 0.4383711f, 0.4539905f, 0.4694716f, 0.4848096f,
- 0.5000000f, 0.5150381f, 0.5299193f, 0.5446390f, 0.5591929f, 0.5735764f,
- 0.5877853f, 0.6018150f, 0.6156615f, 0.6293204f, 0.6427876f, 0.6560590f,
- 0.6691306f, 0.6819984f, 0.6946584f, 0.7071068f, 0.7193398f, 0.7313537f,
- 0.7431448f, 0.7547096f, 0.7660444f, 0.7771460f, 0.7880108f, 0.7986355f,
- 0.8090170f, 0.8191520f, 0.8290376f, 0.8386706f, 0.8480481f, 0.8571673f,
- 0.8660254f, 0.8746197f, 0.8829476f, 0.8910065f, 0.8987940f, 0.9063078f,
- 0.9135455f, 0.9205049f, 0.9271839f, 0.9335804f, 0.9396926f, 0.9455186f,
- 0.9510565f, 0.9563048f, 0.9612617f, 0.9659258f, 0.9702957f, 0.9743701f,
- 0.9781476f, 0.9816272f, 0.9848078f, 0.9876883f, 0.9902681f, 0.9925462f,
- 0.9945219f, 0.9961947f, 0.9975641f, 0.9986295f, 0.9993908f, 0.9998477f,
- 1.0000000f
-};
-
-
-static void
-icvSinCos( int angle, float *cosval, float *sinval )
-{
- angle += (angle < 0 ? 360 : 0);
- *sinval = icvSinTable[angle];
- *cosval = icvSinTable[450 - angle];
-}
-
-/*
- constructs polygon that represents elliptic arc.
-*/
-CV_IMPL int
-cvEllipse2Poly( CvPoint center, CvSize axes, int angle,
- int arc_start, int arc_end, CvPoint* pts, int delta )
-{
- float alpha, beta;
- double size_a = axes.width, size_b = axes.height;
- double cx = center.x, cy = center.y;
- CvPoint *pts_origin = pts;
- int i;
-
- while( angle < 0 )
- angle += 360;
- while( angle > 360 )
- angle -= 360;
-
- if( arc_start > arc_end )
- {
- i = arc_start;
- arc_start = arc_end;
- arc_end = i;
- }
- while( arc_start < 0 )
- {
- arc_start += 360;
- arc_end += 360;
- }
- while( arc_end > 360 )
- {
- arc_end -= 360;
- arc_start -= 360;
- }
- if( arc_end - arc_start > 360 )
- {
- arc_start = 0;
- arc_end = 360;
- }
- icvSinCos( angle, &alpha, &beta );
-
- for( i = arc_start; i < arc_end + delta; i += delta )
- {
- double x, y;
- angle = i;
- if( angle > arc_end )
- angle = arc_end;
- if( angle < 0 )
- angle += 360;
-
- x = size_a * icvSinTable[450-angle];
- y = size_b * icvSinTable[angle];
- pts->x = cvRound( cx + x * alpha - y * beta );
- pts->y = cvRound( cy - x * beta - y * alpha );
- pts += i == arc_start || pts->x != pts[-1].x || pts->y != pts[-1].y;
- }
-
- i = (int)(pts - pts_origin);
- for( ; i < 2; i++ )
- pts_origin[i] = pts_origin[i-1];
- return i;
-}
-
-
-static void
-icvEllipseEx( CvMat* img, CvPoint center, CvSize axes,
- int angle, int arc_start, int arc_end,
- const void* color, int thickness, int line_type )
-{
- CvMemStorage* st = 0;
-
- CV_FUNCNAME( "icvEllipseEx" );
-
- __BEGIN__;
-
- CvPoint v[1 << 8];
- int count, delta;
-
- if( axes.width < 0 || axes.height < 0 )
- CV_ERROR( CV_StsBadSize, "" );
-
- delta = (MAX(axes.width,axes.height)+(XY_ONE>>1))>>XY_SHIFT;
- delta = delta < 3 ? 90 : delta < 10 ? 30 : delta < 15 ? 18 : 5;
-
- count = cvEllipse2Poly( center, axes, angle, arc_start, arc_end, v, delta );
-
- if( thickness >= 0 )
- {
- icvPolyLine( img, v, count, 0, color, thickness, line_type, XY_SHIFT );
- }
- else if( arc_end - arc_start >= 360 )
- {
- icvFillConvexPoly( img, v, count, color, line_type, XY_SHIFT );
- }
- else
- {
- CvContour* edges;
- CvSeq vtx;
- CvSeqBlock block;
-
- CV_CALL( st = cvCreateMemStorage( CV_DRAWING_STORAGE_BLOCK ));
- CV_CALL( edges = (CvContour*)cvCreateSeq( 0, sizeof(CvContour), sizeof(CvPolyEdge), st ));
- v[count++] = center;
-
- CV_CALL( cvMakeSeqHeaderForArray( CV_32SC2, sizeof(CvSeq), sizeof(CvPoint),
- v, count, &vtx, &block ));
-
- CV_CALL( icvCollectPolyEdges( img, &vtx, edges, color, line_type, XY_SHIFT ));
- CV_CALL( icvFillEdgeCollection( img, edges, color ));
- }
-
- __END__;
-
- if( st )
- cvReleaseMemStorage( &st );
-}
-
-
-/****************************************************************************************\
-* Polygons filling *
-\****************************************************************************************/
-
-/* helper macros: filling horizontal row */
-#define ICV_HLINE( ptr, xl, xr, color, pix_size ) \
-{ \
- uchar* hline_ptr = (uchar*)(ptr) + (xl)*(pix_size); \
- uchar* hline_max_ptr = (uchar*)(ptr) + (xr)*(pix_size); \
- \
- for( ; hline_ptr <= hline_max_ptr; hline_ptr += (pix_size))\
- { \
- int hline_j; \
- for( hline_j = 0; hline_j < (pix_size); hline_j++ ) \
- { \
- hline_ptr[hline_j] = ((uchar*)color)[hline_j]; \
- } \
- } \
-}
-
-
-/* filling convex polygon. v - array of vertices, ntps - number of points */
-static void
-icvFillConvexPoly( CvMat* img, CvPoint *v, int npts, const void* color, int line_type, int shift )
-{
- struct
- {
- int idx, di;
- int x, dx, ye;
- }
- edge[2];
-
- int delta = shift ? 1 << (shift - 1) : 0;
- int i, y, imin = 0, left = 0, right = 1, x1, x2;
- int edges = npts;
- int xmin, xmax, ymin, ymax;
- uchar* ptr = img->data.ptr;
- CvSize size = cvGetMatSize( img );
- int pix_size = CV_ELEM_SIZE(img->type);
- CvPoint p0;
- int delta1, delta2;
-
- if( line_type < CV_AA )
- delta1 = delta2 = XY_ONE >> 1;
- //delta1 = 0, delta2 = XY_ONE - 1;
- else
- delta1 = XY_ONE - 1, delta2 = 0;
-
- p0 = v[npts - 1];
- p0.x <<= XY_SHIFT - shift;
- p0.y <<= XY_SHIFT - shift;
-
- assert( 0 <= shift && shift <= XY_SHIFT );
- xmin = xmax = v[0].x;
- ymin = ymax = v[0].y;
-
- for( i = 0; i < npts; i++ )
- {
- CvPoint p = v[i];
- if( p.y < ymin )
- {
- ymin = p.y;
- imin = i;
- }
-
- ymax = MAX( ymax, p.y );
- xmax = MAX( xmax, p.x );
- xmin = MIN( xmin, p.x );
-
- p.x <<= XY_SHIFT - shift;
- p.y <<= XY_SHIFT - shift;
-
- if( line_type <= 8 )
- {
- if( shift == 0 )
- {
- CvPoint pt0, pt1;
- pt0.x = p0.x >> XY_SHIFT;
- pt0.y = p0.y >> XY_SHIFT;
- pt1.x = p.x >> XY_SHIFT;
- pt1.y = p.y >> XY_SHIFT;
- icvLine( img, pt0, pt1, color, line_type );
- }
- else
- icvLine2( img, p0, p, color );
- }
- else
- icvLineAA( img, p0, p, color );
- p0 = p;
- }
-
- xmin = (xmin + delta) >> shift;
- xmax = (xmax + delta) >> shift;
- ymin = (ymin + delta) >> shift;
- ymax = (ymax + delta) >> shift;
-
- if( npts < 3 || xmax < 0 || ymax < 0 || xmin >= size.width || ymin >= size.height )
- return;
-
- ymax = MIN( ymax, size.height - 1 );
- edge[0].idx = edge[1].idx = imin;
-
- edge[0].ye = edge[1].ye = y = ymin;
- edge[0].di = 1;
- edge[1].di = npts - 1;
-
- ptr += img->step*y;
-
- do
- {
- if( line_type < CV_AA || y < ymax || y == ymin )
- {
- for( i = 0; i < 2; i++ )
- {
- if( y >= edge[i].ye )
- {
- int idx = edge[i].idx, di = edge[i].di;
- int xs = 0, xe, ye, ty = 0;
-
- for(;;)
- {
- ty = (v[idx].y + delta) >> shift;
- if( ty > y || edges == 0 )
- break;
- xs = v[idx].x;
- idx += di;
- idx -= ((idx < npts) - 1) & npts; /* idx -= idx >= npts ? npts : 0 */
- edges--;
- }
-
- ye = ty;
- xs <<= XY_SHIFT - shift;
- xe = v[idx].x << (XY_SHIFT - shift);
-
- /* no more edges */
- if( y >= ye )
- return;
-
- edge[i].ye = ye;
- edge[i].dx = ((xe - xs)*2 + (ye - y)) / (2 * (ye - y));
- edge[i].x = xs;
- edge[i].idx = idx;
- }
- }
- }
-
- if( edge[left].x > edge[right].x )
- {
- left ^= 1;
- right ^= 1;
- }
-
- x1 = edge[left].x;
- x2 = edge[right].x;
-
- if( y >= 0 )
- {
- int xx1 = (x1 + delta1) >> XY_SHIFT;
- int xx2 = (x2 + delta2) >> XY_SHIFT;
-
- if( xx2 >= 0 && xx1 < size.width )
- {
- if( xx1 < 0 )
- xx1 = 0;
- if( xx2 >= size.width )
- xx2 = size.width - 1;
- ICV_HLINE( ptr, xx1, xx2, color, pix_size );
- }
- }
-
- x1 += edge[left].dx;
- x2 += edge[right].dx;
-
- edge[left].x = x1;
- edge[right].x = x2;
- ptr += img->step;
- }
- while( ++y <= ymax );
-}
-
-
-/******** Arbitrary polygon **********/
-
-static void
-icvCollectPolyEdges( CvMat* img, CvSeq* v, CvContour* edges,
- const void* color, int line_type, int shift,
- CvPoint offset )
-{
- int i, count = v->total;
- CvRect bounds = edges->rect;
- int delta = offset.y + (shift ? 1 << (shift - 1) : 0);
- int elem_type = CV_MAT_TYPE(v->flags);
-
- CvSeqReader reader;
- CvSeqWriter writer;
-
- cvStartReadSeq( v, &reader );
- cvStartAppendToSeq( (CvSeq*)edges, &writer );
-
- for( i = 0; i < count; i++ )
- {
- CvPoint pt0, pt1, t0, t1;
- CvPolyEdge edge;
- CV_READ_EDGE( pt0, pt1, reader );
-
- if( elem_type == CV_32SC2 )
- {
- pt0.x = (pt0.x + offset.x) << (XY_SHIFT - shift);
- pt0.y = (pt0.y + delta) >> shift;
- pt1.x = (pt1.x + offset.x) << (XY_SHIFT - shift);
- pt1.y = (pt1.y + delta) >> shift;
- }
- else
- {
- Cv32suf x, y;
- assert( shift == 0 );
-
- x.i = pt0.x; y.i = pt0.y;
- pt0.x = cvRound((x.f + offset.x) * XY_ONE);
- pt0.y = cvRound(y.f + offset.y);
- x.i = pt1.x; y.i = pt1.y;
- pt1.x = cvRound((x.f + offset.x) * XY_ONE);
- pt1.y = cvRound(y.f + offset.y);
- }
-
- if( line_type < CV_AA )
- {
- t0.y = pt0.y; t1.y = pt1.y;
- t0.x = (pt0.x + (XY_ONE >> 1)) >> XY_SHIFT;
- t1.x = (pt1.x + (XY_ONE >> 1)) >> XY_SHIFT;
- icvLine( img, t0, t1, color, line_type );
- }
- else
- {
- t0.x = pt0.x; t1.x = pt1.x;
- t0.y = pt0.y << XY_SHIFT;
- t1.y = pt1.y << XY_SHIFT;
- icvLineAA( img, t0, t1, color );
- }
-
- if( pt0.y == pt1.y )
- continue;
-
- if( pt0.y > pt1.y )
- CV_SWAP( pt0, pt1, t0 );
-
- bounds.y = MIN( bounds.y, pt0.y );
- bounds.height = MAX( bounds.height, pt1.y );
-
- if( pt0.x < pt1.x )
- {
- bounds.x = MIN( bounds.x, pt0.x );
- bounds.width = MAX( bounds.width, pt1.x );
- }
- else
- {
- bounds.x = MIN( bounds.x, pt1.x );
- bounds.width = MAX( bounds.width, pt0.x );
- }
-
- edge.y0 = pt0.y;
- edge.y1 = pt1.y;
- edge.x = pt0.x;
- edge.dx = (pt1.x - pt0.x) / (pt1.y - pt0.y);
- assert( edge.y0 < edge.y1 );
-
- CV_WRITE_SEQ_ELEM( edge, writer );
- }
-
- edges->rect = bounds;
- cvEndWriteSeq( &writer );
-}
-
-static int
-icvCmpEdges( const void* _e1, const void* _e2, void* /*userdata*/ )
-{
- CvPolyEdge *e1 = (CvPolyEdge*)_e1, *e2 = (CvPolyEdge*)_e2;
- return e1->y0 - e2->y0 ? e1->y0 - e2->y0 :
- e1->x - e2->x ? e1->x - e2->x : e1->dx - e2->dx;
-}
-
-/**************** helper macros and functions for sequence/contour processing ***********/
-
-static void
-icvFillEdgeCollection( CvMat* img, CvContour* edges, const void* color )
-{
- CvPolyEdge tmp;
- int i, y, total = edges->total;
- CvSeqReader reader;
- CvSize size = cvGetMatSize(img);
- CvPolyEdge* e;
- int y_max = INT_MIN;
- int pix_size = CV_ELEM_SIZE(img->type);
-
- __BEGIN__;
-
- memset( &tmp, 0, sizeof(tmp));
-
- /* check parameters */
- if( edges->total < 2 || edges->rect.height < 0 || edges->rect.y >= size.height ||
- edges->rect.width < 0 || edges->rect.x >= size.width )
- EXIT;
-
- cvSeqSort( (CvSeq*)edges, icvCmpEdges, 0 );
- cvStartReadSeq( (CvSeq*)edges, &reader );
-
-#ifdef _DEBUG
- e = &tmp;
- tmp.y0 = INT_MIN;
-#endif
-
- for( i = 0; i < total; i++ )
- {
- CvPolyEdge* e1 = (CvPolyEdge*)(reader.ptr);
-
-#ifdef _DEBUG
- assert( e1->y0 < e1->y1 && (i == 0 || icvCmpEdges( e, e1, 0 ) <= 0) );
- e = e1;
-#endif
- y_max = MAX( y_max, e1->y1 );
-
- CV_NEXT_SEQ_ELEM( sizeof(CvPolyEdge), reader );
- }
-
- /* start drawing */
- tmp.y0 = INT_MAX;
- cvSeqPush( (CvSeq*)edges, &tmp );
-
- i = 0;
- tmp.next = 0;
- cvStartReadSeq( (CvSeq*)edges, &reader );
- e = (CvPolyEdge*)(reader.ptr);
- y_max = MIN( y_max, size.height );
-
- for( y = e->y0; y < y_max; y++ )
- {
- CvPolyEdge *last, *prelast, *keep_prelast;
- int sort_flag = 0;
- int draw = 0;
- int clipline = y < 0;
-
- prelast = &tmp;
- last = tmp.next;
- while( last || e->y0 == y )
- {
- if( last && last->y1 == y )
- {
- /* exlude edge if y reachs its lower point */
- prelast->next = last->next;
- last = last->next;
- continue;
- }
- keep_prelast = prelast;
- if( last && (e->y0 > y || last->x < e->x) )
- {
- /* go to the next edge in active list */
- prelast = last;
- last = last->next;
- }
- else if( i < total )
- {
- /* insert new edge into active list if y reachs its upper point */
- prelast->next = e;
- e->next = last;
- prelast = e;
- CV_NEXT_SEQ_ELEM( edges->elem_size, reader );
- e = (CvPolyEdge*)(reader.ptr);
- i++;
- }
- else
- break;
-
- if( draw )
- {
- if( !clipline )
- {
- /* convert x's from fixed-point to image coordinates */
- uchar *timg = (uchar*)(img->data.ptr) + y * img->step;
- int x1 = keep_prelast->x;
- int x2 = prelast->x;
-
- if( x1 > x2 )
- {
- int t = x1;
-
- x1 = x2;
- x2 = t;
- }
-
- x1 = (x1 + XY_ONE - 1) >> XY_SHIFT;
- x2 = x2 >> XY_SHIFT;
-
- /* clip and draw the line */
- if( x1 < size.width && x2 >= 0 )
- {
- if( x1 < 0 )
- x1 = 0;
- if( x2 >= size.width )
- x2 = size.width - 1;
- ICV_HLINE( timg, x1, x2, color, pix_size );
- }
- }
- keep_prelast->x += keep_prelast->dx;
- prelast->x += prelast->dx;
- }
- draw ^= 1;
- }
-
- /* sort edges (bubble sort on list) */
- keep_prelast = 0;
-
- do
- {
- prelast = &tmp;
- last = tmp.next;
-
- while( last != keep_prelast && last->next != 0 )
- {
- CvPolyEdge *te = last->next;
-
- /* swap edges */
- if( last->x > te->x )
- {
- prelast->next = te;
- last->next = te->next;
- te->next = last;
- prelast = te;
- sort_flag = 1;
- }
- else
- {
- prelast = last;
- last = te;
- }
- }
- keep_prelast = prelast;
- }
- while( sort_flag && keep_prelast != tmp.next && keep_prelast != &tmp );
- }
-
- __END__;
-}
-
-
-/* draws simple or filled circle */
-static void
-icvCircle( CvMat* img, CvPoint center, int radius, const void* color, int fill )
-{
- CvSize size = cvGetMatSize( img );
- int step = img->step;
- int pix_size = CV_ELEM_SIZE(img->type);
- uchar* ptr = (uchar*)(img->data.ptr);
- int err = 0, dx = radius, dy = 0, plus = 1, minus = (radius << 1) - 1;
- int inside = center.x >= radius && center.x < size.width - radius &&
- center.y >= radius && center.y < size.height - radius;
-
- #define ICV_PUT_POINT( ptr, x ) \
- CV_MEMCPY_CHAR( ptr + (x)*pix_size, color, pix_size );
-
- while( dx >= dy )
- {
- int mask;
- int y11 = center.y - dy, y12 = center.y + dy, y21 = center.y - dx, y22 = center.y + dx;
- int x11 = center.x - dx, x12 = center.x + dx, x21 = center.x - dy, x22 = center.x + dy;
-
- if( inside )
- {
- uchar *tptr0 = ptr + y11 * step;
- uchar *tptr1 = ptr + y12 * step;
-
- if( !fill )
- {
- ICV_PUT_POINT( tptr0, x11 );
- ICV_PUT_POINT( tptr1, x11 );
- ICV_PUT_POINT( tptr0, x12 );
- ICV_PUT_POINT( tptr1, x12 );
- }
- else
- {
- ICV_HLINE( tptr0, x11, x12, color, pix_size );
- ICV_HLINE( tptr1, x11, x12, color, pix_size );
- }
-
- tptr0 = ptr + y21 * step;
- tptr1 = ptr + y22 * step;
-
- if( !fill )
- {
- ICV_PUT_POINT( tptr0, x21 );
- ICV_PUT_POINT( tptr1, x21 );
- ICV_PUT_POINT( tptr0, x22 );
- ICV_PUT_POINT( tptr1, x22 );
- }
- else
- {
- ICV_HLINE( tptr0, x21, x22, color, pix_size );
- ICV_HLINE( tptr1, x21, x22, color, pix_size );
- }
- }
- else if( x11 < size.width && x12 >= 0 && y21 < size.height && y22 >= 0 )
- {
- if( fill )
- {
- x11 = MAX( x11, 0 );
- x12 = MIN( x12, size.width - 1 );
- }
-
- if( (unsigned)y11 < (unsigned)size.height )
- {
- uchar *tptr = ptr + y11 * step;
-
- if( !fill )
- {
- if( x11 >= 0 )
- ICV_PUT_POINT( tptr, x11 );
- if( x12 < size.width )
- ICV_PUT_POINT( tptr, x12 );
- }
- else
- ICV_HLINE( tptr, x11, x12, color, pix_size );
- }
-
- if( (unsigned)y12 < (unsigned)size.height )
- {
- uchar *tptr = ptr + y12 * step;
-
- if( !fill )
- {
- if( x11 >= 0 )
- ICV_PUT_POINT( tptr, x11 );
- if( x12 < size.width )
- ICV_PUT_POINT( tptr, x12 );
- }
- else
- ICV_HLINE( tptr, x11, x12, color, pix_size );
- }
-
- if( x21 < size.width && x22 >= 0 )
- {
- if( fill )
- {
- x21 = MAX( x21, 0 );
- x22 = MIN( x22, size.width - 1 );
- }
-
- if( (unsigned)y21 < (unsigned)size.height )
- {
- uchar *tptr = ptr + y21 * step;
-
- if( !fill )
- {
- if( x21 >= 0 )
- ICV_PUT_POINT( tptr, x21 );
- if( x22 < size.width )
- ICV_PUT_POINT( tptr, x22 );
- }
- else
- ICV_HLINE( tptr, x21, x22, color, pix_size );
- }
-
- if( (unsigned)y22 < (unsigned)size.height )
- {
- uchar *tptr = ptr + y22 * step;
-
- if( !fill )
- {
- if( x21 >= 0 )
- ICV_PUT_POINT( tptr, x21 );
- if( x22 < size.width )
- ICV_PUT_POINT( tptr, x22 );
- }
- else
- ICV_HLINE( tptr, x21, x22, color, pix_size );
- }
- }
- }
- dy++;
- err += plus;
- plus += 2;
-
- mask = (err <= 0) - 1;
-
- err -= minus & mask;
- dx += mask;
- minus -= mask & 2;
- }
-
- #undef ICV_PUT_POINT
-}
-
-
-static void
-icvThickLine( CvMat* img, CvPoint p0, CvPoint p1, const void* color,
- int thickness, int line_type, int flags, int shift )
-{
- static const double INV_XY_ONE = 1./XY_ONE;
-
- p0.x <<= XY_SHIFT - shift;
- p0.y <<= XY_SHIFT - shift;
- p1.x <<= XY_SHIFT - shift;
- p1.y <<= XY_SHIFT - shift;
-
- if( thickness <= 1 )
- {
- if( line_type < CV_AA )
- {
- if( line_type == 1 || line_type == 4 || shift == 0 )
- {
- p0.x = (p0.x + (XY_ONE>>1)) >> XY_SHIFT;
- p0.y = (p0.y + (XY_ONE>>1)) >> XY_SHIFT;
- p1.x = (p1.x + (XY_ONE>>1)) >> XY_SHIFT;
- p1.y = (p1.y + (XY_ONE>>1)) >> XY_SHIFT;
- icvLine( img, p0, p1, color, line_type );
- }
- else
- icvLine2( img, p0, p1, color );
- }
- else
- icvLineAA( img, p0, p1, color );
- }
- else
- {
- CvPoint pt[4], dp = {0,0};
- double dx = (p0.x - p1.x)*INV_XY_ONE, dy = (p1.y - p0.y)*INV_XY_ONE;
- double r = dx * dx + dy * dy;
- int i;
- thickness <<= XY_SHIFT - 1;
-
- if( fabs(r) > DBL_EPSILON )
- {
- r = thickness * cvInvSqrt( (float) r );
- dp.x = cvRound( dy * r );
- dp.y = cvRound( dx * r );
- }
-
- pt[0].x = p0.x + dp.x;
- pt[0].y = p0.y + dp.y;
- pt[1].x = p0.x - dp.x;
- pt[1].y = p0.y - dp.y;
- pt[2].x = p1.x - dp.x;
- pt[2].y = p1.y - dp.y;
- pt[3].x = p1.x + dp.x;
- pt[3].y = p1.y + dp.y;
-
- icvFillConvexPoly( img, pt, 4, color, line_type, XY_SHIFT );
-
- for( i = 0; i < 2; i++ )
- {
- if( flags & (i+1) )
- {
- if( line_type < CV_AA )
- {
- CvPoint center;
- center.x = (p0.x + (XY_ONE>>1)) >> XY_SHIFT;
- center.y = (p0.y + (XY_ONE>>1)) >> XY_SHIFT;
- icvCircle( img, center, thickness >> XY_SHIFT, color, 1 );
- }
- else
- {
- icvEllipseEx( img, p0, cvSize(thickness, thickness),
- 0, 0, 360, color, -1, line_type );
- }
- }
- p0 = p1;
- }
- }
-}
-
-
-static void
-icvPolyLine( CvMat* img, CvPoint *v, int count, int is_closed,
- const void* color, int thickness,
- int line_type, int shift )
-{
- CV_FUNCNAME("icvPolyLine");
-
- __BEGIN__;
-
- if( count > 0 )
- {
- int i = is_closed ? count - 1 : 0;
- int flags = 2 + !is_closed;
- CvPoint p0;
- assert( 0 <= shift && shift <= XY_SHIFT );
- assert( img && thickness >= 0 );
- assert( v && count >= 0 );
-
- if( !v )
- CV_ERROR( CV_StsNullPtr, "" );
-
- p0 = v[i];
- for( i = !is_closed; i < count; i++ )
- {
- CvPoint p = v[i];
- icvThickLine( img, p0, p, color, thickness, line_type, flags, shift );
- p0 = p;
- flags = 2;
- }
- }
-
- __END__;
-}
-
-/****************************************************************************************\
-* External functions *
-\****************************************************************************************/
-
-CV_IMPL CvScalar cvColorToScalar( double packed_color, int type )
-{
- CvScalar scalar;
-
- if( CV_MAT_DEPTH( type ) == CV_8U )
- {
- int icolor = cvRound( packed_color );
- if( CV_MAT_CN( type ) > 1 )
- {
- scalar.val[0] = icolor & 255;
- scalar.val[1] = (icolor >> 8) & 255;
- scalar.val[2] = (icolor >> 16) & 255;
- scalar.val[3] = (icolor >> 24) & 255;
- }
- else
- {
- scalar.val[0] = CV_CAST_8U( icolor );
- scalar.val[1] = scalar.val[2] = scalar.val[3] = 0;
- }
- }
- else if( CV_MAT_DEPTH( type ) == CV_8S )
- {
- int icolor = cvRound( packed_color );
- if( CV_MAT_CN( type ) > 1 )
- {
- scalar.val[0] = (char)icolor;
- scalar.val[1] = (char)(icolor >> 8);
- scalar.val[2] = (char)(icolor >> 16);
- scalar.val[3] = (char)(icolor >> 24);
- }
- else
- {
- scalar.val[0] = CV_CAST_8S( icolor );
- scalar.val[1] = scalar.val[2] = scalar.val[3] = 0;
- }
- }
- else
- {
- int cn = CV_MAT_CN( type );
- switch( cn )
- {
- case 1:
- scalar.val[0] = packed_color;
- scalar.val[1] = scalar.val[2] = scalar.val[3] = 0;
- break;
- case 2:
- scalar.val[0] = scalar.val[1] = packed_color;
- scalar.val[2] = scalar.val[3] = 0;
- break;
- case 3:
- scalar.val[0] = scalar.val[1] = scalar.val[2] = packed_color;
- scalar.val[3] = 0;
- break;
- default:
- scalar.val[0] = scalar.val[1] =
- scalar.val[2] = scalar.val[3] = packed_color;
- break;
- }
- }
-
- return scalar;
-}
-
-
-CV_IMPL void
-cvLine( void* img, CvPoint pt1, CvPoint pt2, CvScalar color,
- int thickness, int line_type, int shift )
-{
- CV_FUNCNAME( "cvLine" );
-
- __BEGIN__;
-
- int coi = 0;
- CvMat stub, *mat = (CvMat*)img;
- double buf[4];
-
- CV_CALL( mat = cvGetMat( img, &stub, &coi ));
-
- if( line_type == CV_AA && CV_MAT_DEPTH(mat->type) != CV_8U )
- line_type = 8;
-
- if( coi != 0 )
- CV_ERROR( CV_BadCOI, cvUnsupportedFormat );
-
- if( (unsigned)thickness > 255 )
- CV_ERROR( CV_StsOutOfRange, "" );
-
- if( shift < 0 || XY_SHIFT < shift )
- CV_ERROR( CV_StsOutOfRange, "shift must be between 0 and 16" );
-
- CV_CALL( cvScalarToRawData( &color, buf, mat->type, 0 ));
- icvThickLine( mat, pt1, pt2, buf, thickness, line_type, 3, shift );
-
- __END__;
-}
-
-
-CV_IMPL void
-cvRectangle( void* img, CvPoint pt1, CvPoint pt2,
- CvScalar color, int thickness,
- int line_type, int shift )
-{
- CvPoint pt[4];
-
- CV_FUNCNAME("cvRectangle");
-
- __BEGIN__;
-
- int coi = 0;
- CvMat stub, *mat = (CvMat*)img;
- double buf[4];
-
- if( thickness > 255 )
- CV_ERROR( CV_StsOutOfRange, "" );
-
- CV_CALL( mat = cvGetMat( img, &stub, &coi ));
-
- if( line_type == CV_AA && CV_MAT_DEPTH(mat->type) != CV_8U )
- line_type = 8;
-
- if( coi != 0 )
- CV_ERROR( CV_BadCOI, cvUnsupportedFormat );
-
- if( shift < 0 || XY_SHIFT < shift )
- CV_ERROR( CV_StsOutOfRange, "shift must be between 0 and 16" );
-
- CV_CALL( cvScalarToRawData( &color, buf, mat->type, 0 ));
-
- pt[0] = pt1;
- pt[1].x = pt2.x;
- pt[1].y = pt1.y;
- pt[2] = pt2;
- pt[3].x = pt1.x;
- pt[3].y = pt2.y;
-
- if( thickness >= 0 )
- icvPolyLine( mat, pt, 4, 1, buf, thickness, line_type, shift );
- else
- icvFillConvexPoly( mat, pt, 4, buf, line_type, shift );
-
- __END__;
-}
-
-
-CV_IMPL void
-cvCircle( void *img, CvPoint center, int radius,
- CvScalar color, int thickness, int line_type, int shift )
-{
- CV_FUNCNAME( "cvCircle" );
-
- __BEGIN__;
-
- int coi = 0;
- CvMat stub, *mat = (CvMat*)img;
- double buf[4];
-
- CV_CALL( mat = cvGetMat( mat, &stub, &coi ));
-
- if( line_type == CV_AA && CV_MAT_DEPTH(mat->type) != CV_8U )
- line_type = 8;
-
- if( coi != 0 )
- CV_ERROR( CV_BadCOI, cvUnsupportedFormat );
-
- if( radius < 0 )
- CV_ERROR( CV_StsOutOfRange, "" );
-
- if( thickness > 255 )
- CV_ERROR( CV_StsOutOfRange, "" );
-
- if( shift < 0 || XY_SHIFT < shift )
- CV_ERROR( CV_StsOutOfRange, "shift must be between 0 and 16" );
-
- CV_CALL( cvScalarToRawData( &color, buf, mat->type, 0 ));
-
- if( thickness > 1 || line_type >= CV_AA )
- {
- center.x <<= XY_SHIFT - shift;
- center.y <<= XY_SHIFT - shift;
- radius <<= XY_SHIFT - shift;
- icvEllipseEx( mat, center, cvSize( radius, radius ),
- 0, 0, 360, buf, thickness, line_type );
- }
- else
- {
- icvCircle( mat, center, radius, buf, thickness < 0 );
- }
-
- __END__;
-}
-
-
-CV_IMPL void
-cvEllipse( void *img, CvPoint center, CvSize axes,
- double angle, double start_angle, double end_angle,
- CvScalar color, int thickness, int line_type, int shift )
-{
- CV_FUNCNAME( "cvEllipse" );
-
- __BEGIN__;
-
- int coi = 0;
- CvMat stub, *mat = (CvMat*)img;
- double buf[4];
-
- CV_CALL( mat = cvGetMat( mat, &stub, &coi ));
-
- if( line_type == CV_AA && CV_MAT_DEPTH(mat->type) != CV_8U )
- line_type = 8;
-
- if( coi != 0 )
- CV_ERROR( CV_BadCOI, cvUnsupportedFormat );
-
- if( axes.width < 0 || axes.height < 0 )
- CV_ERROR( CV_StsOutOfRange, "" );
-
- if( thickness > 255 )
- CV_ERROR( CV_StsOutOfRange, "" );
-
- if( shift < 0 || XY_SHIFT < shift )
- CV_ERROR( CV_StsOutOfRange, "shift must be between 0 and 16" );
-
- CV_CALL( cvScalarToRawData( &color, buf, mat->type, 0 ));
-
- {
- int _angle = cvRound(angle);
- int _start_angle = cvRound(start_angle);
- int _end_angle = cvRound(end_angle);
- center.x <<= XY_SHIFT - shift;
- center.y <<= XY_SHIFT - shift;
- axes.width <<= XY_SHIFT - shift;
- axes.height <<= XY_SHIFT - shift;
-
- CV_CALL( icvEllipseEx( mat, center, axes, _angle, _start_angle,
- _end_angle, buf, thickness, line_type ));
- }
-
- __END__;
-}
-
-
-CV_IMPL void
-cvFillConvexPoly( void *img, CvPoint *pts, int npts, CvScalar color, int line_type, int shift )
-{
- CV_FUNCNAME( "cvFillConvexPoly" );
-
- __BEGIN__;
-
- int coi = 0;
- CvMat stub, *mat = (CvMat*)img;
- double buf[4];
-
- CV_CALL( mat = cvGetMat( mat, &stub, &coi ));
-
- if( line_type == CV_AA && CV_MAT_DEPTH(mat->type) != CV_8U )
- line_type = 8;
-
- if( coi != 0 )
- CV_ERROR( CV_BadCOI, cvUnsupportedFormat );
-
- if( !pts )
- CV_ERROR( CV_StsNullPtr, "" );
-
- if( npts <= 0 )
- CV_ERROR( CV_StsOutOfRange, "" );
-
- if( shift < 0 || XY_SHIFT < shift )
- CV_ERROR( CV_StsOutOfRange, "shift must be between 0 and 16" );
-
- CV_CALL( cvScalarToRawData( &color, buf, mat->type, 0 ));
- icvFillConvexPoly( mat, pts, npts, buf, line_type, shift );
-
- __END__;
-}
-
-
-CV_IMPL void
-cvFillPoly( void *img, CvPoint **pts, int *npts, int contours,
- CvScalar color, int line_type, int shift )
-{
- CvMemStorage* st = 0;
-
- CV_FUNCNAME( "cvFillPoly" );
-
- __BEGIN__;
-
- int coi = 0;
- CvMat stub, *mat = (CvMat*)img;
- double buf[4];
-
- CV_CALL( mat = cvGetMat( mat, &stub, &coi ));
-
- if( line_type == CV_AA && CV_MAT_DEPTH(mat->type) != CV_8U )
- line_type = 8;
-
- if( coi != 0 )
- CV_ERROR( CV_BadCOI, cvUnsupportedFormat );
-
- if( contours <= 0 )
- CV_ERROR( CV_StsBadArg, "" );
-
- if( !pts )
- CV_ERROR( CV_StsNullPtr, "" );
-
- if( npts <= 0 )
- CV_ERROR( CV_StsNullPtr, "" );
-
- if( shift < 0 || XY_SHIFT < shift )
- CV_ERROR( CV_StsOutOfRange, "shift must be between 0 and 16" );
-
- CV_CALL( cvScalarToRawData( &color, buf, mat->type, 0 ));
-
- {
- CvContour* edges = 0;
- CvSeq vtx;
- CvSeqBlock block;
-
- CV_CALL( st = cvCreateMemStorage( CV_DRAWING_STORAGE_BLOCK ));
- CV_CALL( edges = (CvContour*)cvCreateSeq( 0, sizeof(CvContour),
- sizeof(CvPolyEdge), st ));
-
- for( int i = 0; i < contours; i++ )
- {
- if( !pts[i] )
- CV_ERROR( CV_StsNullPtr, "" );
-
- if( npts[i] < 0 )
- CV_ERROR( CV_StsOutOfRange, "" );
-
- cvMakeSeqHeaderForArray( CV_32SC2, sizeof(CvSeq), sizeof(CvPoint),
- pts[i], npts[i], &vtx, &block );
-
- CV_CALL( icvCollectPolyEdges( mat, &vtx, edges, buf, line_type, shift ));
- }
-
- CV_CALL( icvFillEdgeCollection( mat, edges, buf ));
- }
-
- __END__;
-
- cvReleaseMemStorage( &st );
-}
-
-
-
-CV_IMPL void
-cvPolyLine( void *img, CvPoint **pts, int *npts,
- int contours, int closed, CvScalar color,
- int thickness, int line_type, int shift )
-{
- CV_FUNCNAME( "cvPolyLine" );
-
- __BEGIN__;
-
- int coi = 0, i;
- CvMat stub, *mat = (CvMat*)img;
- double buf[4];
-
- CV_CALL( mat = cvGetMat( mat, &stub, &coi ));
-
- if( line_type == CV_AA && CV_MAT_DEPTH(mat->type) != CV_8U )
- line_type = 8;
-
- if( coi != 0 )
- CV_ERROR( CV_BadCOI, cvUnsupportedFormat );
-
- if( contours <= 0 )
- CV_ERROR( CV_StsBadArg, "" );
-
- if( thickness < -1 || thickness > 255 )
- CV_ERROR( CV_StsBadArg, "" );
-
- if( !pts )
- CV_ERROR( CV_StsNullPtr, "" );
-
- if( npts <= 0 )
- CV_ERROR( CV_StsNullPtr, "" );
-
- if( shift < 0 || XY_SHIFT < shift )
- CV_ERROR( CV_StsOutOfRange, "shift must be between 0 and 16" );
-
- CV_CALL( cvScalarToRawData( &color, buf, mat->type, 0 ));
-
- for( i = 0; i < contours; i++ )
- icvPolyLine( mat, pts[i], npts[i], closed, buf, thickness, line_type, shift );
-
- __END__;
-}
-
-
-#define CV_FONT_SIZE_SHIFT 8
-#define CV_FONT_ITALIC_ALPHA (1 << 8)
-#define CV_FONT_ITALIC_DIGIT (2 << 8)
-#define CV_FONT_ITALIC_PUNCT (4 << 8)
-#define CV_FONT_ITALIC_BRACES (8 << 8)
-#define CV_FONT_HAVE_GREEK (16 << 8)
-#define CV_FONT_HAVE_CYRILLIC (32 << 8)
-
-static const int icvHersheyPlain[] = {
-(5 + 4*16) + CV_FONT_HAVE_GREEK,
-199, 214, 217, 233, 219, 197, 234, 216, 221, 222, 228, 225, 211, 224, 210, 220,
-200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 212, 213, 191, 226, 192,
-215, 190, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
-14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 193, 84,
-194, 85, 86, 87, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111,
-112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126,
-195, 223, 196, 88 };
-
-static const int icvHersheyPlainItalic[] = {
-(5 + 4*16) + CV_FONT_ITALIC_ALPHA + CV_FONT_HAVE_GREEK,
-199, 214, 217, 233, 219, 197, 234, 216, 221, 222, 228, 225, 211, 224, 210, 220,
-200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 212, 213, 191, 226, 192,
-215, 190, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
-64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 193, 84,
-194, 85, 86, 87, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161,
-162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176,
-195, 223, 196, 88 };
-
-static const int icvHersheyComplexSmall[] = {
-(6 + 7*16) + CV_FONT_HAVE_GREEK,
-1199, 1214, 1217, 1275, 1274, 1271, 1272, 1216, 1221, 1222, 1219, 1232, 1211, 1231, 1210, 1220,
-1200, 1201, 1202, 1203, 1204, 1205, 1206, 1207, 1208, 1209, 1212, 2213, 1241, 1238, 1242,
-1215, 1273, 1001, 1002, 1003, 1004, 1005, 1006, 1007, 1008, 1009, 1010, 1011, 1012, 1013,
-1014, 1015, 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023, 1024, 1025, 1026, 1223, 1084,
-1224, 1247, 586, 1249, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109, 1110, 1111,
-1112, 1113, 1114, 1115, 1116, 1117, 1118, 1119, 1120, 1121, 1122, 1123, 1124, 1125, 1126,
-1225, 1229, 1226, 1246 };
-
-static const int icvHersheyComplexSmallItalic[] = {
-(6 + 7*16) + CV_FONT_ITALIC_ALPHA + CV_FONT_HAVE_GREEK,
-1199, 1214, 1217, 1275, 1274, 1271, 1272, 1216, 1221, 1222, 1219, 1232, 1211, 1231, 1210, 1220,
-1200, 1201, 1202, 1203, 1204, 1205, 1206, 1207, 1208, 1209, 1212, 1213, 1241, 1238, 1242,
-1215, 1273, 1051, 1052, 1053, 1054, 1055, 1056, 1057, 1058, 1059, 1060, 1061, 1062, 1063,
-1064, 1065, 1066, 1067, 1068, 1069, 1070, 1071, 1072, 1073, 1074, 1075, 1076, 1223, 1084,
-1224, 1247, 586, 1249, 1151, 1152, 1153, 1154, 1155, 1156, 1157, 1158, 1159, 1160, 1161,
-1162, 1163, 1164, 1165, 1166, 1167, 1168, 1169, 1170, 1171, 1172, 1173, 1174, 1175, 1176,
-1225, 1229, 1226, 1246 };
-
-static const int icvHersheySimplex[] = {
-(9 + 12*16) + CV_FONT_HAVE_GREEK,
-2199, 714, 717, 733, 719, 697, 734, 716, 721, 722, 728, 725, 711, 724, 710, 720,
-700, 701, 702, 703, 704, 705, 706, 707, 708, 709, 712, 713, 691, 726, 692,
-715, 690, 501, 502, 503, 504, 505, 506, 507, 508, 509, 510, 511, 512, 513,
-514, 515, 516, 517, 518, 519, 520, 521, 522, 523, 524, 525, 526, 693, 584,
-694, 2247, 586, 2249, 601, 602, 603, 604, 605, 606, 607, 608, 609, 610, 611,
-612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 622, 623, 624, 625, 626,
-695, 723, 696, 2246 };
-
-static const int icvHersheyDuplex[] = {
-(9 + 12*16) + CV_FONT_HAVE_GREEK,
-2199, 2714, 2728, 2732, 2719, 2733, 2718, 2727, 2721, 2722, 2723, 2725, 2711, 2724, 2710, 2720,
-2700, 2701, 2702, 2703, 2704, 2705, 2706, 2707, 2708, 2709, 2712, 2713, 2730, 2726, 2731,
-2715, 2734, 2501, 2502, 2503, 2504, 2505, 2506, 2507, 2508, 2509, 2510, 2511, 2512, 2513,
-2514, 2515, 2516, 2517, 2518, 2519, 2520, 2521, 2522, 2523, 2524, 2525, 2526, 2223, 2084,
-2224, 2247, 587, 2249, 2601, 2602, 2603, 2604, 2605, 2606, 2607, 2608, 2609, 2610, 2611,
-2612, 2613, 2614, 2615, 2616, 2617, 2618, 2619, 2620, 2621, 2622, 2623, 2624, 2625, 2626,
-2225, 2229, 2226, 2246 };
-
-static const int icvHersheyComplex[] = {
-(9 + 12*16) + CV_FONT_HAVE_GREEK + CV_FONT_HAVE_CYRILLIC,
-2199, 2214, 2217, 2275, 2274, 2271, 2272, 2216, 2221, 2222, 2219, 2232, 2211, 2231, 2210, 2220,
-2200, 2201, 2202, 2203, 2204, 2205, 2206, 2207, 2208, 2209, 2212, 2213, 2241, 2238, 2242,
-2215, 2273, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
-2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026, 2223, 2084,
-2224, 2247, 587, 2249, 2101, 2102, 2103, 2104, 2105, 2106, 2107, 2108, 2109, 2110, 2111,
-2112, 2113, 2114, 2115, 2116, 2117, 2118, 2119, 2120, 2121, 2122, 2123, 2124, 2125, 2126,
-2225, 2229, 2226, 2246 };
-
-static const int icvHersheyComplexItalic[] = {
-(9 + 12*16) + CV_FONT_ITALIC_ALPHA + CV_FONT_ITALIC_DIGIT + CV_FONT_ITALIC_PUNCT +
-CV_FONT_HAVE_GREEK + CV_FONT_HAVE_CYRILLIC,
-2199, 2764, 2778, 2782, 2769, 2783, 2768, 2777, 2771, 2772, 2219, 2232, 2211, 2231, 2210, 2220,
-2750, 2751, 2752, 2753, 2754, 2755, 2756, 2757, 2758, 2759, 2212, 2213, 2241, 2238, 2242,
-2765, 2273, 2051, 2052, 2053, 2054, 2055, 2056, 2057, 2058, 2059, 2060, 2061, 2062, 2063,
-2064, 2065, 2066, 2067, 2068, 2069, 2070, 2071, 2072, 2073, 2074, 2075, 2076, 2223, 2084,
-2224, 2247, 587, 2249, 2151, 2152, 2153, 2154, 2155, 2156, 2157, 2158, 2159, 2160, 2161,
-2162, 2163, 2164, 2165, 2166, 2167, 2168, 2169, 2170, 2171, 2172, 2173, 2174, 2175, 2176,
-2225, 2229, 2226, 2246 };
-
-static const int icvHersheyTriplex[] = {
-(9 + 12*16) + CV_FONT_HAVE_GREEK,
-2199, 3214, 3228, 3232, 3219, 3233, 3218, 3227, 3221, 3222, 3223, 3225, 3211, 3224, 3210, 3220,
-3200, 3201, 3202, 3203, 3204, 3205, 3206, 3207, 3208, 3209, 3212, 3213, 3230, 3226, 3231,
-3215, 3234, 3001, 3002, 3003, 3004, 3005, 3006, 3007, 3008, 3009, 3010, 3011, 3012, 3013,
-2014, 3015, 3016, 3017, 3018, 3019, 3020, 3021, 3022, 3023, 3024, 3025, 3026, 2223, 2084,
-2224, 2247, 587, 2249, 3101, 3102, 3103, 3104, 3105, 3106, 3107, 3108, 3109, 3110, 3111,
-3112, 3113, 3114, 3115, 3116, 3117, 3118, 3119, 3120, 3121, 3122, 3123, 3124, 3125, 3126,
-2225, 2229, 2226, 2246 };
-
-static const int icvHersheyTriplexItalic[] = {
-(9 + 12*16) + CV_FONT_ITALIC_ALPHA + CV_FONT_ITALIC_DIGIT +
-CV_FONT_ITALIC_PUNCT + CV_FONT_HAVE_GREEK,
-2199, 3264, 3278, 3282, 3269, 3233, 3268, 3277, 3271, 3272, 3223, 3225, 3261, 3224, 3260, 3270,
-3250, 3251, 3252, 3253, 3254, 3255, 3256, 3257, 3258, 3259, 3262, 3263, 3230, 3226, 3231,
-3265, 3234, 3051, 3052, 3053, 3054, 3055, 3056, 3057, 3058, 3059, 3060, 3061, 3062, 3063,
-2064, 3065, 3066, 3067, 3068, 3069, 3070, 3071, 3072, 3073, 3074, 3075, 3076, 2223, 2084,
-2224, 2247, 587, 2249, 3151, 3152, 3153, 3154, 3155, 3156, 3157, 3158, 3159, 3160, 3161,
-3162, 3163, 3164, 3165, 3166, 3167, 3168, 3169, 3170, 3171, 3172, 3173, 3174, 3175, 3176,
-2225, 2229, 2226, 2246 };
-
-static const int icvHersheyScriptSimplex[] = {
-(9 + 12*16) + CV_FONT_ITALIC_ALPHA + CV_FONT_HAVE_GREEK,
-2199, 714, 717, 733, 719, 697, 734, 716, 721, 722, 728, 725, 711, 724, 710, 720,
-700, 701, 702, 703, 704, 705, 706, 707, 708, 709, 712, 713, 691, 726, 692,
-715, 690, 551, 552, 553, 554, 555, 556, 557, 558, 559, 560, 561, 562, 563,
-564, 565, 566, 567, 568, 569, 570, 571, 572, 573, 574, 575, 576, 693, 584,
-694, 2247, 586, 2249, 651, 652, 653, 654, 655, 656, 657, 658, 659, 660, 661,
-662, 663, 664, 665, 666, 667, 668, 669, 670, 671, 672, 673, 674, 675, 676,
-695, 723, 696, 2246 };
-
-static const int icvHersheyScriptComplex[] = {
-(9 + 12*16) + CV_FONT_ITALIC_ALPHA + CV_FONT_ITALIC_DIGIT + CV_FONT_ITALIC_PUNCT + CV_FONT_HAVE_GREEK,
-2199, 2764, 2778, 2782, 2769, 2783, 2768, 2777, 2771, 2772, 2219, 2232, 2211, 2231, 2210, 2220,
-2750, 2751, 2752, 2753, 2754, 2755, 2756, 2757, 2758, 2759, 2212, 2213, 2241, 2238, 2242,
-2215, 2273, 2551, 2552, 2553, 2554, 2555, 2556, 2557, 2558, 2559, 2560, 2561, 2562, 2563,
-2564, 2565, 2566, 2567, 2568, 2569, 2570, 2571, 2572, 2573, 2574, 2575, 2576, 2223, 2084,
-2224, 2247, 586, 2249, 2651, 2652, 2653, 2654, 2655, 2656, 2657, 2658, 2659, 2660, 2661,
-2662, 2663, 2664, 2665, 2666, 2667, 2668, 2669, 2670, 2671, 2672, 2673, 2674, 2675, 2676,
-2225, 2229, 2226, 2246 };
-
-
-CV_IMPL void
-cvPutText( void *img, const char *text, CvPoint org, const CvFont *font, CvScalar color )
-{
- CV_FUNCNAME( "cvPutText" );
-
- __BEGIN__;
-
- int view_x, view_y;
- int coi = 0;
- int top_bottom = 0, base_line;
- int hscale, vscale, default_shear, italic_shear;
- int thickness, line_type;
- CvMat stub, *mat = (CvMat*)img;
- double buf[4];
- CvPoint pt[1 << 10];
- int count;
-
- int i;
- const char **faces = icvHersheyGlyphs;
-
- CV_CALL( mat = cvGetMat( mat, &stub, &coi ));
-
- if( coi != 0 )
- CV_ERROR( CV_BadCOI, cvUnsupportedFormat );
-
- if( CV_IS_IMAGE_HDR(img) && ((IplImage*)img)->origin )
- top_bottom = 1;
-
- if( !text || !font || !font->ascii )
- CV_ERROR( CV_StsNullPtr, "" );
-
- CV_CALL( cvScalarToRawData( &color, buf, mat->type, 0 ));
- base_line = -(font->ascii[0] & 15);
- hscale = cvRound(font->hscale*XY_ONE);
- vscale = cvRound(font->vscale*XY_ONE);
- default_shear = cvRound(font->shear*font->vscale*XY_ONE);
- italic_shear = !(font->font_face & CV_FONT_ITALIC) ? 0 : cvRound(font->vscale*.25*XY_ONE);
- thickness = font->thickness;
- line_type = font->line_type;
-
- if( line_type == CV_AA && CV_MAT_DEPTH(mat->type) != CV_8U )
- line_type = 8;
-
- if( top_bottom )
- vscale = -vscale;
-
- view_x = org.x << XY_SHIFT;
- view_y = (org.y << XY_SHIFT) + base_line*vscale;
-
- for( i = 0; text[i] != '\0'; i++ )
- {
- int c = (uchar)text[i];
- int dx, shear = default_shear;
- const char* ptr;
- CvPoint p;
-
- if( c > 128 || c < ' ' )
- c = '?';
-
- if( italic_shear )
- {
- if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
- {
- if( !(font->ascii[0] & CV_FONT_ITALIC_ALPHA) )
- shear += italic_shear;
- }
- else if( '0' <= c && c <= '9' )
- {
- if( !(font->ascii[0] & CV_FONT_ITALIC_DIGIT) )
- shear += italic_shear;
- }
- else if( c < 'A' )
- {
- if( !(font->ascii[0] & CV_FONT_ITALIC_PUNCT) )
- shear += italic_shear;
- }
- else
- {
- shear += italic_shear;
- }
- }
-
- ptr = faces[font->ascii[(c-' ')+1]];
- p.x = (unsigned char)ptr[0] - 'R';
- p.y = (unsigned char)ptr[1] - 'R';
- dx = p.y*hscale;
- view_x -= p.x*hscale;
- count = 0;
-
- for( ptr += 2;; )
- {
- if( *ptr == ' ' || !*ptr )
- {
- if( count > 1 )
- icvPolyLine( mat, pt, count, 0, buf, thickness, line_type, XY_SHIFT );
- if( !*ptr++ )
- break;
- count = 0;
- }
- else
- {
- p.x = (unsigned char)ptr[0] - 'R';
- p.y = (unsigned char)ptr[1] - 'R';
- ptr += 2;
- pt[count].x = p.x*hscale - p.y*shear + view_x;
- pt[count++].y = p.y*vscale + view_y;
- }
- }
- view_x += dx;
- }
-
- __END__;
-}
-
-CV_IMPL void
-cvInitFont( CvFont *font, int font_face, double hscale, double vscale,
- double shear, int thickness, int line_type )
-{
- CV_FUNCNAME( "cvInitFont" );
-
- __BEGIN__;
-
- int is_italic = font_face & CV_FONT_ITALIC;
-
- if( !font )
- CV_ERROR( CV_StsNullPtr, "" );
-
- if( hscale <= 0 || vscale <= 0 || thickness < 0 )
- CV_ERROR( CV_StsOutOfRange, "" );
-
- switch( (font_face & 7) )
- {
- case CV_FONT_HERSHEY_SIMPLEX:
- font->ascii = icvHersheySimplex;
- break;
- case CV_FONT_HERSHEY_PLAIN:
- font->ascii = !is_italic ? icvHersheyPlain : icvHersheyPlainItalic;
- break;
- case CV_FONT_HERSHEY_DUPLEX:
- font->ascii = icvHersheyDuplex;
- break;
- case CV_FONT_HERSHEY_COMPLEX:
- font->ascii = !is_italic ? icvHersheyComplex : icvHersheyComplexItalic;
- break;
- case CV_FONT_HERSHEY_TRIPLEX:
- font->ascii = !is_italic ? icvHersheyTriplex : icvHersheyTriplexItalic;
- break;
- case CV_FONT_HERSHEY_COMPLEX_SMALL:
- font->ascii = !is_italic ? icvHersheyComplexSmall : icvHersheyComplexSmallItalic;
- break;
- case CV_FONT_HERSHEY_SCRIPT_SIMPLEX:
- font->ascii = icvHersheyScriptSimplex;
- break;
- case CV_FONT_HERSHEY_SCRIPT_COMPLEX:
- font->ascii = icvHersheyScriptComplex;
- break;
- default:
- CV_ERROR( CV_StsOutOfRange, "Unknown font type" );
- }
-
- font->font_face = font_face;
- font->hscale = (float)hscale;
- font->vscale = (float)vscale;
- font->thickness = thickness;
- font->shear = (float)shear;
- font->greek = font->cyrillic = 0;
- font->line_type = line_type;
-
- __END__;
-}
-
-
-CV_IMPL void
-cvGetTextSize( const char *text, const CvFont *font, CvSize *size, int *_base_line )
-{
- CV_FUNCNAME( "cvGetTextSize" );
-
- __BEGIN__;
-
- float view_x = 0;
- int base_line, cap_line;
-
- int i;
- const char **faces = icvHersheyGlyphs;
-
- if( !text || !font || !font->ascii || !size )
- CV_ERROR( CV_StsNullPtr, "" );
-
- base_line = (font->ascii[0] & 15);
- cap_line = (font->ascii[0] >> 4) & 15;
- if( _base_line )
- *_base_line = cvRound(base_line*font->vscale);
- size->height = cvRound((cap_line + base_line)*font->vscale + font->thickness);
-
- for( i = 0; text[i] != '\0'; i++ )
- {
- int c = (uchar)text[i];
- const char* ptr;
- CvPoint p;
-
- if( c > 128 || c < ' ' )
- c = '?';
-
- ptr = faces[font->ascii[(c-' ')+1]];
- p.x = (unsigned char)ptr[0] - 'R';
- p.y = (unsigned char)ptr[1] - 'R';
- view_x += (p.y - p.x)*font->hscale;
- }
-
- size->width = cvRound(view_x + font->thickness);
-
- __END__;
-}
-
-
-static const CvPoint icvCodeDeltas[8] =
-{ {1, 0}, {1, -1}, {0, -1}, {-1, -1}, {-1, 0}, {-1, 1}, {0, 1}, {1, 1} };
-
-#define CV_ADJUST_EDGE_COUNT( count, seq ) \
- ((count) -= ((count) == (seq)->total && !CV_IS_SEQ_CLOSED(seq)))
-
-CV_IMPL void
-cvDrawContours( void* img, CvSeq* contour,
- CvScalar externalColor, CvScalar holeColor,
- int maxLevel, int thickness,
- int line_type, CvPoint offset )
-{
- CvSeq *contour0 = contour, *h_next = 0;
- CvMemStorage* st = 0;
- CvSeq* tseq = 0;
- CvContour* edges = 0;
- CvSeqWriter writer;
- CvTreeNodeIterator iterator;
-
- CV_FUNCNAME( "cvDrawContours" );
-
- __BEGIN__;
-
- int coi = 0;
- CvMat stub, *mat = (CvMat*)img;
- double ext_buf[4], hole_buf[4];
-
- CV_CALL( mat = cvGetMat( mat, &stub, &coi ));
-
- if( line_type == CV_AA && CV_MAT_DEPTH(mat->type) != CV_8U )
- line_type = 8;
-
- if( !contour )
- EXIT;
-
- if( coi != 0 )
- CV_ERROR( CV_BadCOI, cvUnsupportedFormat );
-
- if( thickness < -1 || thickness > 255 )
- CV_ERROR( CV_StsOutOfRange, "" );
-
- CV_CALL( cvScalarToRawData( &externalColor, ext_buf, mat->type, 0 ));
- CV_CALL( cvScalarToRawData( &holeColor, hole_buf, mat->type, 0 ));
-
- if( maxLevel < 0 )
- {
- h_next = contour->h_next;
- contour->h_next = 0;
- maxLevel = -maxLevel+1;
- }
-
- if( thickness < 0 )
- {
- if( contour->storage )
- st = cvCreateChildMemStorage( contour->storage );
- else
- st = cvCreateMemStorage( CV_DRAWING_STORAGE_BLOCK );
- tseq = cvCreateSeq( 0, sizeof(CvContour), sizeof(CvPoint), st );
- edges = (CvContour*)cvCreateSeq( 0, sizeof(CvContour), sizeof(CvPolyEdge), st );
- }
-
- memset( &writer, 0, sizeof(writer));
-
- cvInitTreeNodeIterator( &iterator, contour, maxLevel );
-
- while( (contour = (CvSeq*)cvNextTreeNode( &iterator )) != 0 )
- {
- CvSeqReader reader;
- int i, count = contour->total;
- int elem_type = CV_MAT_TYPE(contour->flags);
- void* clr = (contour->flags & CV_SEQ_FLAG_HOLE) == 0 ? ext_buf : hole_buf;
-
- cvStartReadSeq( contour, &reader, 0 );
-
- if( CV_IS_SEQ_CHAIN_CONTOUR( contour ))
- {
- CvPoint pt = ((CvChain*)contour)->origin;
- CvPoint prev_pt = pt;
- char prev_code = reader.ptr ? reader.ptr[0] : '\0';
-
- if( thickness < 0 )
- {
- cvClearSeq( tseq );
- cvStartAppendToSeq( tseq, &writer );
- CV_WRITE_SEQ_ELEM( pt, writer );
- }
-
- prev_pt.x += offset.x;
- prev_pt.y += offset.y;
-
- for( i = 0; i < count; i++ )
- {
- char code;
- CV_READ_SEQ_ELEM( code, reader );
-
- assert( (code & ~7) == 0 );
-
- if( code != prev_code )
- {
- prev_code = code;
- if( thickness >= 0 )
- {
- icvThickLine( mat, prev_pt, pt, clr, thickness, line_type, 2, 0 );
- }
- else
- {
- CV_WRITE_SEQ_ELEM( pt, writer );
- }
- prev_pt = pt;
- }
-
- pt.x += icvCodeDeltas[(int)code].x;
- pt.y += icvCodeDeltas[(int)code].y;
- }
-
- if( thickness >= 0 )
- {
- icvThickLine( mat, prev_pt, ((CvChain*)contour)->origin,
- clr, thickness, line_type, 2, 0 );
- }
- else
- {
- CV_WRITE_SEQ_ELEM( pt, writer );
- cvEndWriteSeq( &writer );
- CV_CALL( icvCollectPolyEdges( mat, tseq, edges, ext_buf, line_type, 0 ));
- }
- }
- else if( CV_IS_SEQ_POLYLINE( contour ))
- {
- if( thickness >= 0 )
- {
- CvPoint pt1, pt2;
- int shift = 0;
-
- count -= !CV_IS_SEQ_CLOSED(contour);
- if( elem_type == CV_32SC2 )
- {
- CV_READ_SEQ_ELEM( pt1, reader );
- pt1.x += offset.x;
- pt1.y += offset.y;
- }
- else
- {
- CvPoint2D32f pt1f;
- CV_READ_SEQ_ELEM( pt1f, reader );
- pt1.x = cvRound( (pt1f.x + offset.x) * XY_ONE );
- pt1.y = cvRound( (pt1f.y + offset.y) * XY_ONE );
- shift = XY_SHIFT;
- }
-
- for( i = 0; i < count; i++ )
- {
- if( elem_type == CV_32SC2 )
- {
- CV_READ_SEQ_ELEM( pt2, reader );
- pt2.x += offset.x;
- pt2.y += offset.y;
- }
- else
- {
- CvPoint2D32f pt2f;
- CV_READ_SEQ_ELEM( pt2f, reader );
- pt2.x = cvRound( pt2f.x * XY_ONE );
- pt2.y = cvRound( pt2f.y * XY_ONE );
- }
- icvThickLine( mat, pt1, pt2, clr, thickness, line_type, 2, shift );
- pt1 = pt2;
- }
- }
- else
- {
- CV_CALL( icvCollectPolyEdges( mat, contour, edges, ext_buf, line_type, 0, offset ));
- }
- }
- }
-
- if( thickness < 0 )
- {
- CV_CALL( icvFillEdgeCollection( mat, edges, ext_buf ));
- }
-
- __END__;
-
- if( h_next && contour0 )
- contour0->h_next = h_next;
-
- cvReleaseMemStorage( &st );
-}
-
-/* End of file. */
projects / opencv / blobdiff