www.pudn.com > OpenCV-Intel.zip > _cvgeom.h

/*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*/ 
 
#ifndef _CV_GEOM_H_ 
#define _CV_GEOM_H_ 
 
/* Finds distance between two points */ 
CV_INLINE  float  icvDistanceL2_32f( CvPoint2D32f pt1, CvPoint2D32f pt2 ) 
{ 
    float dx = pt2.x - pt1.x; 
    float dy = pt2.y - pt1.y; 
 
    return cvSqrt( dx*dx + dy*dy ); 
} 
 
 
int  icvIntersectLines( double x1, double dx1, double y1, double dy1, 
                        double x2, double dx2, double y2, double dy2, 
                        double* t2 ); 
 
 
void icvCreateCenterNormalLine( CvSubdiv2DEdge edge, double* a, double* b, double* c ); 
 
void icvIntersectLines3( double* a0, double* b0, double* c0, 
                         double* a1, double* b1, double* c1, 
                         CvPoint2D32f* point ); 
 
 
#define _CV_BINTREE_LIST()                                          \ 
   struct _CvTrianAttr* prev_v;   /* pointer to the parent  element on the previous level of the tree  */    \ 
   struct _CvTrianAttr* next_v1;   /* pointer to the child  element on the next level of the tree  */        \ 
   struct _CvTrianAttr* next_v2;   /* pointer to the child  element on the next level of the tree  */         
 
typedef struct _CvTrianAttr 
{ 
   CvPoint pt;    /* Coordinates x and y of the vertex  which don't lie on the base line LMIAT  */ 
   char sign;             /*  sign of the triangle   */ 
   double area;       /*   area of the triangle    */ 
   double r1;   /*  The ratio of the height of triangle to the base of the triangle  */ 
   double r2;  /*   The ratio of the projection of the left side of the triangle on the base to the base */ 
   _CV_BINTREE_LIST()    /* structure double list   */ 
} 
_CvTrianAttr; 
 
 
/* curvature: 0 - 1-curvature, 1 - k-cosine curvature. */ 
CvStatus  icvApproximateChainTC89( CvChain*      chain, 
                                   int header_size, 
                                   CvMemStorage* storage, 
                                   CvSeq**   contour, 
                                   int method ); 
 
#endif /*_IPCVGEOM_H_*/ 
 
/* End of file. */