utils.cpp

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00041 
00042 #include "precomp.hpp"
00043 
00044 CV_IMPL CvSeq* cvPointSeqFromMat( int seq_kind, const CvArr* arr,
00045                                   CvContour* contour_header, CvSeqBlock* block )
00046 {
00047     CV_Assert( arr != 0 && contour_header != 0 && block != 0 );
00048 
00049     int eltype;
00050     CvMat hdr;
00051     CvMat* mat = (CvMat*)arr;
00052 
00053     if( !CV_IS_MAT( mat ))
00054         CV_Error( CV_StsBadArg, "Input array is not a valid matrix" );
00055 
00056     if( CV_MAT_CN(mat->type) == 1 && mat->width == 2 )
00057         mat = cvReshape(mat, &hdr, 2);
00058 
00059     eltype = CV_MAT_TYPE( mat->type );
00060     if( eltype != CV_32SC2 && eltype != CV_32FC2 )
00061         CV_Error( CV_StsUnsupportedFormat,
00062         "The matrix can not be converted to point sequence because of "
00063         "inappropriate element type" );
00064 
00065     if( (mat->width != 1 && mat->height != 1) || !CV_IS_MAT_CONT(mat->type))
00066         CV_Error( CV_StsBadArg,
00067         "The matrix converted to point sequence must be "
00068         "1-dimensional and continuous" );
00069 
00070     cvMakeSeqHeaderForArray(
00071             (seq_kind & (CV_SEQ_KIND_MASK|CV_SEQ_FLAG_CLOSED)) | eltype,
00072             sizeof(CvContour), CV_ELEM_SIZE(eltype), mat->data.ptr,
00073             mat->width*mat->height, (CvSeq*)contour_header, block );
00074 
00075     return (CvSeq*)contour_header;
00076 }
00077 
00078 CV_IMPL void
00079 cvCopyMakeBorder( const CvArr* srcarr, CvArr* dstarr, CvPoint offset,
00080                   int borderType, CvScalar  value )
00081 {
00082     cv::Mat src = cv::cvarrToMat(srcarr), dst = cv::cvarrToMat(dstarr);
00083     int left = offset.x, right = dst.cols - src.cols - left;
00084     int top = offset.y, bottom = dst.rows - src.rows - top;
00085 
00086     CV_Assert( dst.type() == src.type() );
00087     cv::copyMakeBorder( src, dst, top, bottom, left, right, borderType, value );
00088 }
00089 
00090 /* End of file. */
00091