mirror of
https://github.com/opencv/opencv.git
synced 2024-12-04 16:59:12 +08:00
332 lines
9.7 KiB
C++
332 lines
9.7 KiB
C++
/*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 "precomp.hpp"
|
|
|
|
|
|
CV_IMPL CvRect
|
|
cvMaxRect( const CvRect* rect1, const CvRect* rect2 )
|
|
{
|
|
if( rect1 && rect2 )
|
|
{
|
|
CvRect max_rect;
|
|
int a, b;
|
|
|
|
max_rect.x = a = rect1->x;
|
|
b = rect2->x;
|
|
if( max_rect.x > b )
|
|
max_rect.x = b;
|
|
|
|
max_rect.width = a += rect1->width;
|
|
b += rect2->width;
|
|
|
|
if( max_rect.width < b )
|
|
max_rect.width = b;
|
|
max_rect.width -= max_rect.x;
|
|
|
|
max_rect.y = a = rect1->y;
|
|
b = rect2->y;
|
|
if( max_rect.y > b )
|
|
max_rect.y = b;
|
|
|
|
max_rect.height = a += rect1->height;
|
|
b += rect2->height;
|
|
|
|
if( max_rect.height < b )
|
|
max_rect.height = b;
|
|
max_rect.height -= max_rect.y;
|
|
return max_rect;
|
|
}
|
|
else if( rect1 )
|
|
return *rect1;
|
|
else if( rect2 )
|
|
return *rect2;
|
|
else
|
|
return cvRect(0,0,0,0);
|
|
}
|
|
|
|
|
|
CV_IMPL void
|
|
cvBoxPoints( CvBox2D box, CvPoint2D32f pt[4] )
|
|
{
|
|
if( !pt )
|
|
CV_Error( CV_StsNullPtr, "NULL vertex array pointer" );
|
|
cv::RotatedRect(box).points((cv::Point2f*)pt);
|
|
}
|
|
|
|
|
|
int
|
|
icvIntersectLines( double x1, double dx1, double y1, double dy1,
|
|
double x2, double dx2, double y2, double dy2, double *t2 )
|
|
{
|
|
double d = dx1 * dy2 - dx2 * dy1;
|
|
int result = -1;
|
|
|
|
if( d != 0 )
|
|
{
|
|
*t2 = ((x2 - x1) * dy1 - (y2 - y1) * dx1) / d;
|
|
result = 0;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
void
|
|
icvCreateCenterNormalLine( CvSubdiv2DEdge edge, double *_a, double *_b, double *_c )
|
|
{
|
|
CvPoint2D32f org = cvSubdiv2DEdgeOrg( edge )->pt;
|
|
CvPoint2D32f dst = cvSubdiv2DEdgeDst( edge )->pt;
|
|
|
|
double a = dst.x - org.x;
|
|
double b = dst.y - org.y;
|
|
double c = -(a * (dst.x + org.x) + b * (dst.y + org.y));
|
|
|
|
*_a = a + a;
|
|
*_b = b + b;
|
|
*_c = c;
|
|
}
|
|
|
|
|
|
void
|
|
icvIntersectLines3( double *a0, double *b0, double *c0,
|
|
double *a1, double *b1, double *c1, CvPoint2D32f * point )
|
|
{
|
|
double det = a0[0] * b1[0] - a1[0] * b0[0];
|
|
|
|
if( det != 0 )
|
|
{
|
|
det = 1. / det;
|
|
point->x = (float) ((b0[0] * c1[0] - b1[0] * c0[0]) * det);
|
|
point->y = (float) ((a1[0] * c0[0] - a0[0] * c1[0]) * det);
|
|
}
|
|
else
|
|
{
|
|
point->x = point->y = FLT_MAX;
|
|
}
|
|
}
|
|
|
|
|
|
CV_IMPL double
|
|
cvPointPolygonTest( const CvArr* _contour, CvPoint2D32f pt, int measure_dist )
|
|
{
|
|
double result = 0;
|
|
|
|
CvSeqBlock block;
|
|
CvContour header;
|
|
CvSeq* contour = (CvSeq*)_contour;
|
|
CvSeqReader reader;
|
|
int i, total, counter = 0;
|
|
int is_float;
|
|
double min_dist_num = FLT_MAX, min_dist_denom = 1;
|
|
CvPoint ip = {0,0};
|
|
|
|
if( !CV_IS_SEQ(contour) )
|
|
{
|
|
contour = cvPointSeqFromMat( CV_SEQ_KIND_CURVE + CV_SEQ_FLAG_CLOSED,
|
|
_contour, &header, &block );
|
|
}
|
|
else if( CV_IS_SEQ_POINT_SET(contour) )
|
|
{
|
|
if( contour->header_size == sizeof(CvContour) && !measure_dist )
|
|
{
|
|
CvRect r = ((CvContour*)contour)->rect;
|
|
if( pt.x < r.x || pt.y < r.y ||
|
|
pt.x >= r.x + r.width || pt.y >= r.y + r.height )
|
|
return -100;
|
|
}
|
|
}
|
|
else if( CV_IS_SEQ_CHAIN(contour) )
|
|
{
|
|
CV_Error( CV_StsBadArg,
|
|
"Chains are not supported. Convert them to polygonal representation using cvApproxChains()" );
|
|
}
|
|
else
|
|
CV_Error( CV_StsBadArg, "Input contour is neither a valid sequence nor a matrix" );
|
|
|
|
total = contour->total;
|
|
is_float = CV_SEQ_ELTYPE(contour) == CV_32FC2;
|
|
cvStartReadSeq( contour, &reader, -1 );
|
|
|
|
if( !is_float && !measure_dist && (ip.x = cvRound(pt.x)) == pt.x && (ip.y = cvRound(pt.y)) == pt.y )
|
|
{
|
|
// the fastest "pure integer" branch
|
|
CvPoint v0, v;
|
|
CV_READ_SEQ_ELEM( v, reader );
|
|
|
|
for( i = 0; i < total; i++ )
|
|
{
|
|
int dist;
|
|
v0 = v;
|
|
CV_READ_SEQ_ELEM( v, reader );
|
|
|
|
if( (v0.y <= ip.y && v.y <= ip.y) ||
|
|
(v0.y > ip.y && v.y > ip.y) ||
|
|
(v0.x < ip.x && v.x < ip.x) )
|
|
{
|
|
if( ip.y == v.y && (ip.x == v.x || (ip.y == v0.y &&
|
|
((v0.x <= ip.x && ip.x <= v.x) || (v.x <= ip.x && ip.x <= v0.x)))) )
|
|
return 0;
|
|
continue;
|
|
}
|
|
|
|
dist = (ip.y - v0.y)*(v.x - v0.x) - (ip.x - v0.x)*(v.y - v0.y);
|
|
if( dist == 0 )
|
|
return 0;
|
|
if( v.y < v0.y )
|
|
dist = -dist;
|
|
counter += dist > 0;
|
|
}
|
|
|
|
result = counter % 2 == 0 ? -100 : 100;
|
|
}
|
|
else
|
|
{
|
|
CvPoint2D32f v0, v;
|
|
CvPoint iv;
|
|
|
|
if( is_float )
|
|
{
|
|
CV_READ_SEQ_ELEM( v, reader );
|
|
}
|
|
else
|
|
{
|
|
CV_READ_SEQ_ELEM( iv, reader );
|
|
v = cvPointTo32f( iv );
|
|
}
|
|
|
|
if( !measure_dist )
|
|
{
|
|
for( i = 0; i < total; i++ )
|
|
{
|
|
double dist;
|
|
v0 = v;
|
|
if( is_float )
|
|
{
|
|
CV_READ_SEQ_ELEM( v, reader );
|
|
}
|
|
else
|
|
{
|
|
CV_READ_SEQ_ELEM( iv, reader );
|
|
v = cvPointTo32f( iv );
|
|
}
|
|
|
|
if( (v0.y <= pt.y && v.y <= pt.y) ||
|
|
(v0.y > pt.y && v.y > pt.y) ||
|
|
(v0.x < pt.x && v.x < pt.x) )
|
|
{
|
|
if( pt.y == v.y && (pt.x == v.x || (pt.y == v0.y &&
|
|
((v0.x <= pt.x && pt.x <= v.x) || (v.x <= pt.x && pt.x <= v0.x)))) )
|
|
return 0;
|
|
continue;
|
|
}
|
|
|
|
dist = (double)(pt.y - v0.y)*(v.x - v0.x) - (double)(pt.x - v0.x)*(v.y - v0.y);
|
|
if( dist == 0 )
|
|
return 0;
|
|
if( v.y < v0.y )
|
|
dist = -dist;
|
|
counter += dist > 0;
|
|
}
|
|
|
|
result = counter % 2 == 0 ? -100 : 100;
|
|
}
|
|
else
|
|
{
|
|
for( i = 0; i < total; i++ )
|
|
{
|
|
double dx, dy, dx1, dy1, dx2, dy2, dist_num, dist_denom = 1;
|
|
|
|
v0 = v;
|
|
if( is_float )
|
|
{
|
|
CV_READ_SEQ_ELEM( v, reader );
|
|
}
|
|
else
|
|
{
|
|
CV_READ_SEQ_ELEM( iv, reader );
|
|
v = cvPointTo32f( iv );
|
|
}
|
|
|
|
dx = v.x - v0.x; dy = v.y - v0.y;
|
|
dx1 = pt.x - v0.x; dy1 = pt.y - v0.y;
|
|
dx2 = pt.x - v.x; dy2 = pt.y - v.y;
|
|
|
|
if( dx1*dx + dy1*dy <= 0 )
|
|
dist_num = dx1*dx1 + dy1*dy1;
|
|
else if( dx2*dx + dy2*dy >= 0 )
|
|
dist_num = dx2*dx2 + dy2*dy2;
|
|
else
|
|
{
|
|
dist_num = (dy1*dx - dx1*dy);
|
|
dist_num *= dist_num;
|
|
dist_denom = dx*dx + dy*dy;
|
|
}
|
|
|
|
if( dist_num*min_dist_denom < min_dist_num*dist_denom )
|
|
{
|
|
min_dist_num = dist_num;
|
|
min_dist_denom = dist_denom;
|
|
if( min_dist_num == 0 )
|
|
break;
|
|
}
|
|
|
|
if( (v0.y <= pt.y && v.y <= pt.y) ||
|
|
(v0.y > pt.y && v.y > pt.y) ||
|
|
(v0.x < pt.x && v.x < pt.x) )
|
|
continue;
|
|
|
|
dist_num = dy1*dx - dx1*dy;
|
|
if( dy < 0 )
|
|
dist_num = -dist_num;
|
|
counter += dist_num > 0;
|
|
}
|
|
|
|
result = sqrt(min_dist_num/min_dist_denom);
|
|
if( counter % 2 == 0 )
|
|
result = -result;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/* End of file. */
|