50 lines
935 B
C++
50 lines
935 B
C++
// This file is part of FexGenericFilter and (C) 2006 by Hajo Krabbenhöft (tentacle)
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// All rights reserved but the aegisub project is allowed to use it.
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#include "stdafx.h"
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#include "FexSystem.h"
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#include "ext\imdebug.h"
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void FexImage_Filter( FexImage* in, FexFilter* filter, FexImage* out )
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{
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#define FilterWidth (filter->Width)
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#define FilterWeight(t) (filter->Filter(t))
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#include "FexGenericFilter_FexImageApply.h"
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#undef FilterWidth
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#undef FilterWeight
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}
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#include <math.h>
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inline double sinc( double x )
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{
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x *= 3.1415;
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if( x != 0 )
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return( sin(x) / x );
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return( 1.0 );
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}
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inline double RescaleFilter( double t )
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{
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if( t < 0 )
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t = -t;
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if( t < 3.0 )
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return( sinc(t) * sinc(t/3.0) );
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return( 0.0 );
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}
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void FexImage_Rescale( FexImage* in, FexImage* out )
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{
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#define FilterWidth (3)
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#define FilterWeight(t) (RescaleFilter(t))
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#include "FexGenericFilter_FexImageApply.h"
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#undef FilterWidth
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#undef FilterWeight
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}
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