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update samples: waitKey() usage

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Original commit is a5f19f7dd6
This commit is contained in:
StevenPuttemans
2016-08-12 15:11:30 +02:00
committed by Alexander Alekhin
parent 4e7b521438
commit 6d34d6b47e
76 changed files with 142 additions and 154 deletions
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samples/cpp/tutorial_code/ImgProc/Pyramids.cpp
+10 -14
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@@ -45,26 +45,22 @@ int main( void )
//![infinite_loop]
for(;;)
{
int c;
c = waitKey(0);
char c = (char)waitKey(0);
if( (char)c == 27 )
if( c == 27 )
{ break; }
if( (char)c == 'u' )
{
//![pyrup]
pyrUp( tmp, dst, Size( tmp.cols*2, tmp.rows*2 ) );
//![pyrup]
//![pyrup]
if( c == 'u' )
{ pyrUp( tmp, dst, Size( tmp.cols*2, tmp.rows*2 ) );
printf( "** Zoom In: Image x 2 \n" );
}
else if( (char)c == 'd' )
{
//![pyrdown]
pyrDown( tmp, dst, Size( tmp.cols/2, tmp.rows/2 ) );
//![pyrdown]
//![pyrup]
//![pyrdown]
else if( c == 'd' )
{ pyrDown( tmp, dst, Size( tmp.cols/2, tmp.rows/2 ) );
printf( "** Zoom Out: Image / 2 \n" );
}
//![pyrdown]
imshow( window_name, dst );
//![update_tmp]