--- /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"
+
+namespace cv
+{
+
+enum { XY_SHIFT = 16, XY_ONE = 1 << XY_SHIFT, DRAWING_STORAGE_BLOCK = (1<<12) - 256 };
+
+struct PolyEdge
+{
+ PolyEdge() : y0(0), y1(0), x(0), dx(0), next(0) {}
+ PolyEdge(int _y0, int _y1, int _x, int _dx) : y0(_y0), y1(_y1), x(_x), dx(_dx) {}
+
+ int y0, y1;
+ int x, dx;
+ PolyEdge *next;
+};
+
+static void
+CollectPolyEdges( Mat& img, const Point* v, int npts,
+ vector<PolyEdge>& edges, const void* color, int line_type,
+ int shift, Point offset=Point() );
+
+static void
+FillEdgeCollection( Mat& img, vector<PolyEdge>& edges, const void* color );
+
+static void
+PolyLine( Mat& img, const Point* v, int npts, bool closed,
+ const void* color, int thickness, int line_type, int shift );
+
+static void
+FillConvexPoly( Mat& img, const Point* v, int npts,
+ const void* color, int line_type, int shift );
+
+/****************************************************************************************\
+* Lines *
+\****************************************************************************************/
+
+bool clipLine( Size img_size, Point& pt1, Point& pt2 )
+{
+ int x1, y1, x2, y2;
+ int c1, c2;
+ int right = img_size.width-1, bottom = img_size.height-1;
+
+ CV_Assert( img_size.width > 0 && img_size.height > 0 );
+
+ 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;
+ }
+
+ return (c1 | c2) == 0;
+}
+
+bool clipLine( Rect img_rect, Point& pt1, Point& pt2 )
+{
+ Point tl = img_rect.tl();
+ pt1 -= tl; pt2 -= tl;
+ bool inside = clipLine(img_rect.size(), pt1, pt2);
+ pt1 += tl; pt2 += tl;
+
+ return inside;
+}
+
+/*
+ Initializes line iterator.
+ Returns number of points on the line or negative number if error.
+*/
+LineIterator::LineIterator(const Mat& img, Point pt1, Point pt2,
+ int connectivity, bool left_to_right)
+{
+ count = -1;
+
+ CV_Assert( connectivity == 8 || connectivity == 4 );
+
+ if( (unsigned)pt1.x >= (unsigned)(img.cols) ||
+ (unsigned)pt2.x >= (unsigned)(img.cols) ||
+ (unsigned)pt1.y >= (unsigned)(img.rows) ||
+ (unsigned)pt2.y >= (unsigned)(img.rows) )
+ {
+ if( !clipLine( img.size(), pt1, pt2 ) )
+ {
+ ptr = img.data;
+ err = plusDelta = minusDelta = plusStep = minusStep = count = 0;
+ return;
+ }
+ }
+
+ int bt_pix0 = (int)img.elemSize(), bt_pix = bt_pix0;
+ size_t step = img.step;
+
+ int dx = pt2.x - pt1.x;
+ int dy = pt2.y - pt1.y;
+ int 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;
+ }
+
+ ptr = (uchar*)(img.data + 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 );
+
+ err = dx - (dy + dy);
+ plusDelta = dx + dx;
+ minusDelta = -(dy + dy);
+ plusStep = (int)step;
+ minusStep = bt_pix;
+ count = dx + 1;
+ }
+ else /* connectivity == 4 */
+ {
+ assert( dx >= 0 && dy >= 0 );
+
+ err = 0;
+ plusDelta = (dx + dx) + (dy + dy);
+ minusDelta = -(dy + dy);
+ plusStep = (int)step - bt_pix;
+ minusStep = bt_pix;
+ count = dx + dy + 1;
+ }
+}
+
+static void
+Line( Mat& img, Point pt1, Point pt2,
+ const void* color, int connectivity = 8 )
+{
+ if( connectivity == 0 )
+ connectivity = 8;
+ if( connectivity == 1 )
+ connectivity = 4;
+
+ LineIterator iterator(img, pt1, pt2, connectivity, true);
+ int i, count = iterator.count;
+ int pix_size = (int)img.elemSize();
+
+ for( i = 0; i < count; i++, ++iterator )
+ {
+ CV_MEMCPY_AUTO( *iterator, color, pix_size );
+ }
+}
+
+
+/* Correction table depent on the slope */
+static const uchar SlopeCorrTable[] = {
+ 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 FilterTable[] = {
+ 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
+LineAA( Mat& img, Point pt1, Point 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 = img.channels();
+ uchar* ptr = img.data;
+ size_t step = img.step;
+ Size size = img.size();
+
+ if( !((nch == 1 || nch == 3) && img.depth() == CV_8U) )
+ {
+ Line(img, pt1, pt2, color);
+ return;
+ }
+
+ 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( !clipLine( 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 : SlopeCorrTable[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 * FilterTable[dist + 32] >> 8) & 0xff;
+ ICV_PUT_POINT();
+ ICV_PUT_POINT();
+
+ tptr += step;
+ a = (ep_corr * FilterTable[dist] >> 8) & 0xff;
+ ICV_PUT_POINT();
+ ICV_PUT_POINT();
+
+ tptr += step;
+ a = (ep_corr * FilterTable[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 * FilterTable[dist + 32] >> 8) & 0xff;
+ ICV_PUT_POINT();
+ ICV_PUT_POINT();
+
+ tptr += 3;
+ a = (ep_corr * FilterTable[dist] >> 8) & 0xff;
+ ICV_PUT_POINT();
+ ICV_PUT_POINT();
+
+ tptr += 3;
+ a = (ep_corr * FilterTable[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 * FilterTable[dist + 32] >> 8) & 0xff;
+ ICV_PUT_POINT();
+ ICV_PUT_POINT();
+
+ tptr += step;
+ a = (ep_corr * FilterTable[dist] >> 8) & 0xff;
+ ICV_PUT_POINT();
+ ICV_PUT_POINT();
+
+ tptr += step;
+ a = (ep_corr * FilterTable[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 * FilterTable[dist + 32] >> 8) & 0xff;
+ ICV_PUT_POINT();
+ ICV_PUT_POINT();
+
+ tptr++;
+ a = (ep_corr * FilterTable[dist] >> 8) & 0xff;
+ ICV_PUT_POINT();
+ ICV_PUT_POINT();
+
+ tptr++;
+ a = (ep_corr * FilterTable[63 - dist] >> 8) & 0xff;
+ ICV_PUT_POINT();
+ ICV_PUT_POINT();
+
+ pt1.x += x_step;
+ ptr += step;
+ scount++;
+ ecount--;
+ }
+ }
+ #undef ICV_PUT_POINT
+ }
+}
+
+
+static void
+Line2( Mat& img, Point pt1, Point 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 = (int)img.elemSize();
+ uchar *ptr = img.data, *tptr;
+ size_t step = img.step;
+ Size size = img.size();
+
+ //assert( img && (nch == 1 || nch == 3) && img.depth() == 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( !clipLine( 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 SinTable[] =
+ { 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
+sincos( int angle, float& cosval, float& sinval )
+{
+ angle += (angle < 0 ? 360 : 0);
+ sinval = SinTable[angle];
+ cosval = SinTable[450 - angle];
+}
+
+/*
+ constructs polygon that represents elliptic arc.
+*/
+void ellipse2Poly( Point center, Size axes, int angle,
+ int arc_start, int arc_end,
+ int delta, vector<Point>& pts )
+{
+ float alpha, beta;
+ double size_a = axes.width, size_b = axes.height;
+ double cx = center.x, cy = center.y;
+ Point prevPt(INT_MIN,INT_MIN);
+ 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;
+ }
+ sincos( angle, alpha, beta );
+ pts.resize(0);
+
+ 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 * SinTable[450-angle];
+ y = size_b * SinTable[angle];
+ Point pt;
+ pt.x = cvRound( cx + x * alpha - y * beta );
+ pt.y = cvRound( cy - x * beta - y * alpha );
+ if( pt != prevPt )
+ pts.push_back(pt);
+ }
+
+ if( pts.size() < 2 )
+ pts.push_back(pts[0]);
+}
+
+
+static void
+EllipseEx( Mat& img, Point center, Size axes,
+ int angle, int arc_start, int arc_end,
+ const void* color, int thickness, int line_type )
+{
+ CV_Assert( axes.width >= 0 && axes.height >= 0 );
+ int delta = (std::max(axes.width,axes.height)+(XY_ONE>>1))>>XY_SHIFT;
+ delta = delta < 3 ? 90 : delta < 10 ? 30 : delta < 15 ? 18 : 5;
+
+ vector<Point> v;
+ ellipse2Poly( center, axes, angle, arc_start, arc_end, delta, v );
+
+ if( thickness >= 0 )
+ PolyLine( img, &v[0], (int)v.size(), false, color, thickness, line_type, XY_SHIFT );
+ else if( arc_end - arc_start >= 360 )
+ FillConvexPoly( img, &v[0], (int)v.size(), color, line_type, XY_SHIFT );
+ else
+ {
+ v.push_back(center);
+ vector<PolyEdge> edges;
+ CollectPolyEdges( img, &v[0], (int)v.size(), edges, color, line_type, XY_SHIFT );
+ FillEdgeCollection( img, edges, color );
+ }
+}
+
+
+/****************************************************************************************\
+* 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
+FillConvexPoly( Mat& img, const Point* 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;
+ Size size = img.size();
+ int pix_size = (int)img.elemSize();
+ Point p0;
+ int delta1, delta2;
+
+ if( line_type < CV_AA )
+ delta1 = 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++ )
+ {
+ Point p = v[i];
+ if( p.y < ymin )
+ {
+ ymin = p.y;
+ imin = i;
+ }
+
+ ymax = std::max( ymax, p.y );
+ xmax = std::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 )
+ {
+ Point 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;
+ Line( img, pt0, pt1, color, line_type );
+ }
+ else
+ Line2( img, p0, p, color );
+ }
+ else
+ LineAA( 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
+CollectPolyEdges( Mat& img, const Point* v, int count, vector<PolyEdge>& edges,
+ const void* color, int line_type, int shift, Point offset )
+{
+ int i, delta = offset.y + (shift ? 1 << (shift - 1) : 0);
+ Point pt0 = v[count-1], pt1;
+ pt0.x = (pt0.x + offset.x) << (XY_SHIFT - shift);
+ pt0.y = (pt0.y + delta) >> shift;
+
+ edges.reserve( edges.size() + count );
+
+ for( i = 0; i < count; i++, pt0 = pt1 )
+ {
+ Point t0, t1;
+ PolyEdge edge;
+
+ pt1 = v[i];
+ pt1.x = (pt1.x + offset.x) << (XY_SHIFT - shift);
+ pt1.y = (pt1.y + delta) >> shift;
+
+ 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;
+ Line( 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;
+ LineAA( img, t0, t1, color );
+ }
+
+ if( pt0.y == pt1.y )
+ continue;
+
+ if( pt0.y < pt1.y )
+ {
+ edge.y0 = pt0.y;
+ edge.y1 = pt1.y;
+ edge.x = pt0.x;
+ }
+ else
+ {
+ edge.y0 = pt1.y;
+ edge.y1 = pt0.y;
+ edge.x = pt1.x;
+ }
+ edge.dx = (pt1.x - pt0.x) / (pt1.y - pt0.y);
+ edges.push_back(edge);
+ }
+}
+
+struct CmpEdges
+{
+ bool operator ()(const PolyEdge& e1, const PolyEdge& 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
+FillEdgeCollection( Mat& img, vector<PolyEdge>& edges, const void* color )
+{
+ PolyEdge tmp;
+ int i, y, total = (int)edges.size();
+ Size size = img.size();
+ PolyEdge* e;
+ int y_max = INT_MIN, x_max = INT_MIN, y_min = INT_MAX, x_min = INT_MAX;
+ int pix_size = (int)img.elemSize();
+
+ if( total < 2 )
+ return;
+
+ for( i = 0; i < total; i++ )
+ {
+ PolyEdge& e1 = edges[i];
+ assert( e1.y0 < e1.y1 );
+ y_min = std::min( y_min, e1.y0 );
+ y_max = std::max( y_max, e1.y1 );
+ x_min = std::min( x_min, e1.x );
+ x_max = std::max( x_max, e1.x );
+ }
+
+ if( y_max < 0 || y_min >= size.height || x_max < 0 || x_min >= (size.width<<XY_SHIFT) )
+ return;
+
+ std::sort( edges.begin(), edges.end(), CmpEdges() );
+
+ // start drawing
+ tmp.y0 = INT_MAX;
+ edges.push_back(tmp); // after this point we do not add
+ // any elements to edges, thus we can use pointers
+ i = 0;
+ tmp.next = 0;
+ e = &edges[i];
+ y_max = MIN( y_max, size.height );
+
+ for( y = e->y0; y < y_max; y++ )
+ {
+ PolyEdge *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 )
+ {
+ // exclude 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;
+ e = &edges[++i];
+ }
+ else
+ break;
+
+ if( draw )
+ {
+ if( !clipline )
+ {
+ // convert x's from fixed-point to image coordinates
+ uchar *timg = img.data + 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 (using bubble sort)
+ keep_prelast = 0;
+
+ do
+ {
+ prelast = &tmp;
+ last = tmp.next;
+
+ while( last != keep_prelast && last->next != 0 )
+ {
+ PolyEdge *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 );
+ }
+}
+
+
+/* draws simple or filled circle */
+static void
+Circle( Mat& img, Point center, int radius, const void* color, int fill )
+{
+ Size size = img.size();
+ size_t step = img.step;
+ int pix_size = (int)img.elemSize();
+ uchar* ptr = img.data;
+ 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 = std::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 = std::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
+ThickLine( Mat& img, Point p0, Point 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;
+ Line( img, p0, p1, color, line_type );
+ }
+ else
+ Line2( img, p0, p1, color );
+ }
+ else
+ LineAA( img, p0, p1, color );
+ }
+ else
+ {
+ Point pt[4], dp = Point(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, oddThickness = thickness & 1;
+ thickness <<= XY_SHIFT - 1;
+
+ if( fabs(r) > DBL_EPSILON )
+ {
+ r = (thickness + oddThickness*XY_ONE*0.5)/std::sqrt(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;
+
+ FillConvexPoly( img, pt, 4, color, line_type, XY_SHIFT );
+ }
+
+ for( i = 0; i < 2; i++ )
+ {
+ if( flags & (i+1) )
+ {
+ if( line_type < CV_AA )
+ {
+ Point center;
+ center.x = (p0.x + (XY_ONE>>1)) >> XY_SHIFT;
+ center.y = (p0.y + (XY_ONE>>1)) >> XY_SHIFT;
+ Circle( img, center, (thickness + (XY_ONE>>1)) >> XY_SHIFT, color, 1 );
+ }
+ else
+ {
+ EllipseEx( img, p0, cvSize(thickness, thickness),
+ 0, 0, 360, color, -1, line_type );
+ }
+ }
+ p0 = p1;
+ }
+ }
+}
+
+
+static void
+PolyLine( Mat& img, const Point* v, int count, bool is_closed,
+ const void* color, int thickness,
+ int line_type, int shift )
+{
+ if( !v || count <= 0 )
+ return;
+
+ int i = is_closed ? count - 1 : 0;
+ int flags = 2 + !is_closed;
+ Point p0;
+ CV_Assert( 0 <= shift && shift <= XY_SHIFT && thickness >= 0 );
+
+ p0 = v[i];
+ for( i = !is_closed; i < count; i++ )
+ {
+ Point p = v[i];
+ ThickLine( img, p0, p, color, thickness, line_type, flags, shift );
+ p0 = p;
+ flags = 2;
+ }
+}
+
+/****************************************************************************************\
+* External functions *
+\****************************************************************************************/
+
+void line( Mat& img, Point pt1, Point pt2, const Scalar& color,
+ int thickness, int line_type, int shift )
+{
+ if( line_type == CV_AA && img.depth() != CV_8U )
+ line_type = 8;
+
+ CV_Assert( 0 <= thickness && thickness <= 255 );
+ CV_Assert( 0 <= shift && shift <= XY_SHIFT );
+
+ double buf[4];
+ scalarToRawData( color, buf, img.type(), 0 );
+ ThickLine( img, pt1, pt2, buf, thickness, line_type, 3, shift );
+}
+
+void rectangle( Mat& img, Point pt1, Point pt2,
+ const Scalar& color, int thickness,
+ int line_type, int shift )
+{
+ if( line_type == CV_AA && img.depth() != CV_8U )
+ line_type = 8;
+
+ CV_Assert( thickness <= 255 );
+ CV_Assert( 0 <= shift && shift <= XY_SHIFT );
+
+ double buf[4];
+ scalarToRawData(color, buf, img.type(), 0);
+
+ Point pt[4];
+
+ 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 )
+ PolyLine( img, pt, 4, true, buf, thickness, line_type, shift );
+ else
+ FillConvexPoly( img, pt, 4, buf, line_type, shift );
+}
+
+
+void circle( Mat& img, Point center, int radius,
+ const Scalar& color, int thickness, int line_type, int shift )
+{
+ if( line_type == CV_AA && img.depth() != CV_8U )
+ line_type = 8;
+
+ CV_Assert( radius >= 0 && thickness <= 255 &&
+ 0 <= shift && shift <= XY_SHIFT );
+
+ double buf[4];
+ scalarToRawData(color, buf, img.type(), 0);
+
+ if( thickness > 1 || line_type >= CV_AA )
+ {
+ center.x <<= XY_SHIFT - shift;
+ center.y <<= XY_SHIFT - shift;
+ radius <<= XY_SHIFT - shift;
+ EllipseEx( img, center, Size(radius, radius),
+ 0, 0, 360, buf, thickness, line_type );
+ }
+ else
+ Circle( img, center, radius, buf, thickness < 0 );
+}
+
+
+void ellipse( Mat& img, Point center, Size axes,
+ double angle, double start_angle, double end_angle,
+ const Scalar& color, int thickness, int line_type, int shift )
+{
+ if( line_type == CV_AA && img.depth() != CV_8U )
+ line_type = 8;
+
+ CV_Assert( axes.width >= 0 && axes.height >= 0 &&
+ thickness <= 255 && 0 <= shift && shift <= XY_SHIFT );
+
+ double buf[4];
+ scalarToRawData(color, buf, img.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;
+
+ EllipseEx( img, center, axes, _angle, _start_angle,
+ _end_angle, buf, thickness, line_type );
+}
+
+void ellipse(Mat& img, const RotatedRect& box, const Scalar& color,
+ int thickness, int lineType)
+{
+ if( lineType == CV_AA && img.depth() != CV_8U )
+ lineType = 8;
+
+ CV_Assert( box.size.width >= 0 && box.size.height >= 0 &&
+ thickness <= 255 );
+
+ double buf[4];
+ scalarToRawData(color, buf, img.type(), 0);
+
+ int _angle = cvRound(box.angle);
+ Point center(cvRound(box.center.x*(1 << XY_SHIFT)),
+ cvRound(box.center.y*(1 << XY_SHIFT)));
+ Size axes(cvRound(box.size.width*(1 << (XY_SHIFT - 1))),
+ cvRound(box.size.height*(1 << (XY_SHIFT - 1))));
+ EllipseEx( img, center, axes, _angle, 0, 360, buf, thickness, lineType );
+}
+
+void fillConvexPoly( Mat& img, const Point* pts, int npts,
+ const Scalar& color, int line_type, int shift )
+{
+ if( !pts || npts <= 0 )
+ return;
+
+ if( line_type == CV_AA && img.depth() != CV_8U )
+ line_type = 8;
+
+ double buf[4];
+ CV_Assert( 0 <= shift && shift <= XY_SHIFT );
+ scalarToRawData(color, buf, img.type(), 0);
+ FillConvexPoly( img, pts, npts, buf, line_type, shift );
+}
+
+
+void fillPoly( Mat& img, const Point** pts, const int* npts, int ncontours,
+ const Scalar& color, int line_type,
+ int shift, Point offset )
+{
+ if( line_type == CV_AA && img.depth() != CV_8U )
+ line_type = 8;
+
+ CV_Assert( pts && npts && ncontours >= 0 && 0 <= shift && shift <= XY_SHIFT );
+
+ double buf[4];
+ scalarToRawData(color, buf, img.type(), 0);
+
+ vector<PolyEdge> edges;
+
+ int i, total = 0;
+ for( i = 0; i < ncontours; i++ )
+ total += npts[i];
+
+ edges.reserve( total + 1 );
+ for( i = 0; i < ncontours; i++ )
+ CollectPolyEdges( img, pts[i], npts[i], edges, buf, line_type, shift, offset );
+
+ FillEdgeCollection(img, edges, buf);
+}
+
+
+void polylines( Mat& img, const Point** pts, const int* npts, int ncontours, bool isClosed,
+ const Scalar& color, int thickness, int line_type, int shift )
+{
+ if( line_type == CV_AA && img.depth() != CV_8U )
+ line_type = 8;
+
+ CV_Assert( pts && npts && ncontours >= 0 &&
+ 0 <= thickness && thickness <= 255 &&
+ 0 <= shift && shift <= XY_SHIFT );
+
+ double buf[4];
+ scalarToRawData( color, buf, img.type(), 0 );
+
+ for( int i = 0; i < ncontours; i++ )
+ PolyLine( img, pts[i], npts[i], isClosed, buf, thickness, line_type, shift );
+}
+
+
+enum { FONT_SIZE_SHIFT=8, FONT_ITALIC_ALPHA=(1 << 8),
+ FONT_ITALIC_DIGIT=(2 << 8), FONT_ITALIC_PUNCT=(4 << 8),
+ FONT_ITALIC_BRACES=(8 << 8), FONT_HAVE_GREEK=(16 << 8),
+ FONT_HAVE_CYRILLIC=(32 << 8) };
+
+static const int HersheyPlain[] = {
+(5 + 4*16) + 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 HersheyPlainItalic[] = {
+(5 + 4*16) + FONT_ITALIC_ALPHA + 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 HersheyComplexSmall[] = {
+(6 + 7*16) + 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 HersheyComplexSmallItalic[] = {
+(6 + 7*16) + FONT_ITALIC_ALPHA + 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 HersheySimplex[] = {
+(9 + 12*16) + 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 HersheyDuplex[] = {
+(9 + 12*16) + 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 HersheyComplex[] = {
+(9 + 12*16) + FONT_HAVE_GREEK + 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 HersheyComplexItalic[] = {
+(9 + 12*16) + FONT_ITALIC_ALPHA + FONT_ITALIC_DIGIT + FONT_ITALIC_PUNCT +
+FONT_HAVE_GREEK + 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 HersheyTriplex[] = {
+(9 + 12*16) + 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 HersheyTriplexItalic[] = {
+(9 + 12*16) + FONT_ITALIC_ALPHA + FONT_ITALIC_DIGIT +
+FONT_ITALIC_PUNCT + 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 HersheyScriptSimplex[] = {
+(9 + 12*16) + FONT_ITALIC_ALPHA + 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 HersheyScriptComplex[] = {
+(9 + 12*16) + FONT_ITALIC_ALPHA + FONT_ITALIC_DIGIT + FONT_ITALIC_PUNCT + 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 };
+
+
+static const int* getFontData(int fontFace)
+{
+ bool isItalic = (fontFace & FONT_ITALIC) != 0;
+ const int* ascii = 0;
+
+ switch( fontFace & 15 )
+ {
+ case FONT_HERSHEY_SIMPLEX:
+ ascii = HersheySimplex;
+ break;
+ case FONT_HERSHEY_PLAIN:
+ ascii = !isItalic ? HersheyPlain : HersheyPlainItalic;
+ break;
+ case FONT_HERSHEY_DUPLEX:
+ ascii = HersheyDuplex;
+ break;
+ case FONT_HERSHEY_COMPLEX:
+ ascii = !isItalic ? HersheyComplex : HersheyComplexItalic;
+ break;
+ case FONT_HERSHEY_TRIPLEX:
+ ascii = !isItalic ? HersheyTriplex : HersheyTriplexItalic;
+ break;
+ case FONT_HERSHEY_COMPLEX_SMALL:
+ ascii = !isItalic ? HersheyComplexSmall : HersheyComplexSmallItalic;
+ break;
+ case FONT_HERSHEY_SCRIPT_SIMPLEX:
+ ascii = HersheyScriptSimplex;
+ break;
+ case FONT_HERSHEY_SCRIPT_COMPLEX:
+ ascii = HersheyScriptComplex;
+ break;
+ default:
+ CV_Error( CV_StsOutOfRange, "Unknown font type" );
+ }
+ return ascii;
+}
+
+
+void putText( Mat& img, const string& text, Point org,
+ int fontFace, double fontScale, Scalar color,
+ int thickness, int line_type, bool bottomLeftOrigin )
+
+{
+ const int* ascii = getFontData(fontFace);
+
+ double buf[4];
+ scalarToRawData(color, buf, img.type(), 0);
+
+ int base_line = -(ascii[0] & 15);
+ int hscale = cvRound(fontScale*XY_ONE), vscale = hscale;
+
+ if( line_type == CV_AA && img.type() != CV_8U )
+ line_type = 8;
+
+ if( bottomLeftOrigin )
+ vscale = -vscale;
+
+ int view_x = org.x << XY_SHIFT;
+ int view_y = (org.y << XY_SHIFT) + base_line*vscale;
+ vector<Point> pts;
+ pts.reserve(1 << 10);
+ const char **faces = cv::g_HersheyGlyphs;
+
+ for( int i = 0; text[i] != '\0'; i++ )
+ {
+ int c = (uchar)text[i];
+ Point p;
+
+ if( c >= 127 || c < ' ' )
+ c = '?';
+
+ const char* ptr = faces[ascii[(c-' ')+1]];
+ p.x = (uchar)ptr[0] - 'R';
+ p.y = (uchar)ptr[1] - 'R';
+ int dx = p.y*hscale;
+ view_x -= p.x*hscale;
+ pts.resize(0);
+
+ for( ptr += 2;; )
+ {
+ if( *ptr == ' ' || !*ptr )
+ {
+ if( pts.size() > 1 )
+ PolyLine( img, &pts[0], (int)pts.size(), false, buf, thickness, line_type, XY_SHIFT );
+ if( !*ptr++ )
+ break;
+ pts.resize(0);
+ }
+ else
+ {
+ p.x = (uchar)ptr[0] - 'R';
+ p.y = (uchar)ptr[1] - 'R';
+ ptr += 2;
+ pts.push_back(Point(p.x*hscale + view_x, p.y*vscale + view_y));
+ }
+ }
+ view_x += dx;
+ }
+}
+
+Size getTextSize( const string& text, int fontFace, double fontScale, int thickness, int* _base_line)
+{
+ Size size;
+ double view_x = 0;
+ const char **faces = cv::g_HersheyGlyphs;
+ const int* ascii = getFontData(fontFace);
+
+ int base_line = (ascii[0] & 15);
+ int cap_line = (ascii[0] >> 4) & 15;
+ size.height = cvRound((cap_line + base_line)*fontScale + (thickness+1)/2);
+
+ for( int i = 0; text[i] != '\0'; i++ )
+ {
+ int c = (uchar)text[i];
+ Point p;
+
+ if( c >= 127 || c < ' ' )
+ c = '?';
+
+ const char* ptr = faces[ascii[(c-' ')+1]];
+ p.x = (uchar)ptr[0] - 'R';
+ p.y = (uchar)ptr[1] - 'R';
+ view_x += (p.y - p.x)*fontScale;
+ }
+
+ size.width = cvRound(view_x + thickness);
+ if( _base_line )
+ *_base_line = cvRound(base_line*fontScale + thickness*0.5);
+ return size;
+}
+
+}
+
+static const int CodeDeltas[8][2] =
+{ {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;
+ CvTreeNodeIterator iterator;
+ cv::vector<cv::PolyEdge> edges;
+ cv::vector<cv::Point> pts;
+ cv::Scalar externalColor = _externalColor, holeColor = _holeColor;
+ cv::Mat img = cv::cvarrToMat(_img);
+ cv::Point offset = _offset;
+ double ext_buf[4], hole_buf[4];
+
+ if( line_type == CV_AA && img.depth() != CV_8U )
+ line_type = 8;
+
+ if( !contour )
+ return;
+
+ CV_Assert( thickness <= 255 );
+
+ scalarToRawData( externalColor, ext_buf, img.type(), 0 );
+ scalarToRawData( holeColor, hole_buf, img.type(), 0 );
+
+ if( maxLevel < 0 )
+ {
+ h_next = contour->h_next;
+ contour->h_next = 0;
+ maxLevel = -maxLevel+1;
+ }
+
+ 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( thickness < 0 )
+ pts.resize(0);
+
+ if( CV_IS_SEQ_CHAIN_CONTOUR( contour ))
+ {
+ cv::Point pt = ((CvChain*)contour)->origin;
+ cv::Point prev_pt = pt;
+ char prev_code = reader.ptr ? reader.ptr[0] : '\0';
+
+ prev_pt += offset;
+
+ 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 )
+ cv::ThickLine( img, prev_pt, pt, clr, thickness, line_type, 2, 0 );
+ else
+ pts.push_back(pt);
+ prev_pt = pt;
+ }
+
+ pt.x += CodeDeltas[(int)code][0];
+ pt.y += CodeDeltas[(int)code][1];
+ }
+
+ if( thickness >= 0 )
+ cv::ThickLine( img, prev_pt,
+ cv::Point(((CvChain*)contour)->origin) + offset,
+ clr, thickness, line_type, 2, 0 );
+ else
+ cv::CollectPolyEdges(img, &pts[0], (int)pts.size(),
+ edges, ext_buf, line_type, 0, offset);
+ }
+ else if( CV_IS_SEQ_POLYLINE( contour ))
+ {
+ CV_Assert( elem_type == CV_32SC2 );
+ cv::Point pt1, pt2;
+ int shift = 0;
+
+ count -= !CV_IS_SEQ_CLOSED(contour);
+ CV_READ_SEQ_ELEM( pt1, reader );
+ pt1 += offset;
+ if( thickness < 0 )
+ pts.push_back(pt1);
+
+ for( i = 0; i < count; i++ )
+ {
+ CV_READ_SEQ_ELEM( pt2, reader );
+ pt2 += offset;
+ if( thickness >= 0 )
+ cv::ThickLine( img, pt1, pt2, clr, thickness, line_type, 2, shift );
+ else
+ pts.push_back(pt2);
+ pt1 = pt2;
+ }
+ if( thickness < 0 )
+ cv::CollectPolyEdges( img, &pts[0], (int)pts.size(),
+ edges, ext_buf, line_type, 0, cv::Point() );
+ }
+ }
+
+ if( thickness < 0 )
+ cv::FillEdgeCollection( img, edges, ext_buf );
+
+ if( h_next && contour0 )
+ contour0->h_next = h_next;
+}
+
+CV_IMPL int
+cvClipLine( CvSize size, CvPoint* pt1, CvPoint* pt2 )
+{
+ CV_Assert( pt1 && pt2 );
+ return cv::clipLine( size, *(cv::Point*)pt1, *(cv::Point*)pt2 );
+}
+
+
+CV_IMPL int
+cvEllipse2Poly( CvPoint center, CvSize axes, int angle,
+ int arc_start, int arc_end, CvPoint* _pts, int delta )
+{
+ cv::vector<cv::Point> pts;
+ cv::ellipse2Poly( center, axes, angle, arc_start, arc_end, delta, pts );
+ memcpy( _pts, &pts[0], pts.size()*sizeof(_pts[0]) );
+ return (int)pts.size();
+}
+
+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 int
+cvInitLineIterator( const CvArr* img, CvPoint pt1, CvPoint pt2,
+ CvLineIterator* iterator, int connectivity,
+ int left_to_right )
+{
+ CV_Assert( iterator != 0 );
+ cv::LineIterator li(cv::cvarrToMat(img), pt1, pt2, connectivity, left_to_right!=0);
+
+ iterator->err = li.err;
+ iterator->minus_delta = li.minusDelta;
+ iterator->plus_delta = li.plusDelta;
+ iterator->minus_step = li.minusStep;
+ iterator->plus_step = li.plusStep;
+ iterator->ptr = li.ptr;
+
+ return li.count;
+}
+
+CV_IMPL void
+cvLine( CvArr* _img, CvPoint pt1, CvPoint pt2, CvScalar color,
+ int thickness, int line_type, int shift )
+{
+ cv::Mat img = cv::cvarrToMat(_img);
+ cv::line( img, pt1, pt2, color, thickness, line_type, shift );
+}
+
+CV_IMPL void
+cvRectangle( CvArr* _img, CvPoint pt1, CvPoint pt2,
+ CvScalar color, int thickness,
+ int line_type, int shift )
+{
+ cv::Mat img = cv::cvarrToMat(_img);
+ cv::rectangle( img, pt1, pt2, color, thickness, line_type, shift );
+}
+
+CV_IMPL void
+cvCircle( CvArr* _img, CvPoint center, int radius,
+ CvScalar color, int thickness, int line_type, int shift )
+{
+ cv::Mat img = cv::cvarrToMat(_img);
+ cv::circle( img, center, radius, color, thickness, line_type, shift );
+}
+
+CV_IMPL void
+cvEllipse( CvArr* _img, CvPoint center, CvSize axes,
+ double angle, double start_angle, double end_angle,
+ CvScalar color, int thickness, int line_type, int shift )
+{
+ cv::Mat img = cv::cvarrToMat(_img);
+ cv::ellipse( img, center, axes, angle, start_angle, end_angle,
+ color, thickness, line_type, shift );
+}
+
+CV_IMPL void
+cvFillConvexPoly( CvArr* _img, const CvPoint *pts, int npts,
+ CvScalar color, int line_type, int shift )
+{
+ cv::Mat img = cv::cvarrToMat(_img);
+ cv::fillConvexPoly( img, (const cv::Point*)pts, npts,
+ color, line_type, shift );
+}
+
+CV_IMPL void
+cvFillPoly( CvArr* _img, CvPoint **pts, const int *npts, int ncontours,
+ CvScalar color, int line_type, int shift )
+{
+ cv::Mat img = cv::cvarrToMat(_img);
+
+ cv::fillPoly( img, (const cv::Point**)pts, npts, ncontours, color, line_type, shift );
+}
+
+CV_IMPL void
+cvPolyLine( CvArr* _img, CvPoint **pts, const int *npts,
+ int ncontours, int closed, CvScalar color,
+ int thickness, int line_type, int shift )
+{
+ cv::Mat img = cv::cvarrToMat(_img);
+
+ cv::polylines( img, (const cv::Point**)pts, npts, ncontours,
+ closed != 0, color, thickness, line_type, shift );
+}
+
+CV_IMPL void
+cvPutText( CvArr* _img, const char *text, CvPoint org, const CvFont *_font, CvScalar color )
+{
+ cv::Mat img = cv::cvarrToMat(_img);
+ CV_Assert( text != 0 && _font != 0);
+ cv::putText( img, text, org, _font->font_face, (_font->hscale+_font->vscale)*0.5,
+ color, _font->thickness, _font->line_type,
+ CV_IS_IMAGE(_img) && ((IplImage*)_img)->origin != 0 );
+}
+
+
+CV_IMPL void
+cvInitFont( CvFont *font, int font_face, double hscale, double vscale,
+ double shear, int thickness, int line_type )
+{
+ CV_Assert( font != 0 && hscale > 0 && vscale > 0 && thickness >= 0 );
+
+ font->ascii = cv::getFontData(font_face);
+ 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;
+}
+
+CV_IMPL void
+cvGetTextSize( const char *text, const CvFont *_font, CvSize *_size, int *_base_line )
+{
+ CV_Assert(text != 0 && _font != 0);
+ cv::Size size = cv::getTextSize( text, _font->font_face, (_font->hscale + _font->vscale)*0.5,
+ _font->thickness, _base_line );
+ if( _size )
+ *_size = size;
+}
+
+/* End of file. */
projects / opencv / blobdiff