READ_DST_PT       636 modules/imgproc/src/approx.cpp     READ_DST_PT(start_pt, pos);
READ_DST_PT       638 modules/imgproc/src/approx.cpp     READ_DST_PT(pt, pos);
READ_DST_PT       643 modules/imgproc/src/approx.cpp         READ_DST_PT( end_pt, pos );
READ_DST_PT       657 modules/imgproc/src/approx.cpp             READ_DST_PT(pt, pos);