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//
// PRCDFTLowPass.m
// PRICE
// DFT based LowPass filter controller
//
// Created by Riccardo Mottola on Sat Sep 13 2003.
// Copyright (c) 2003 Carduus. All rights reserved.
//
// This application is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#import "PRCDFTLowPass.h"
#import "MyDocument.h"
#import "math.h"
@implementation PRCDFTLowPass
- (IBAction)showDFTLP:(id)sender
{
if (!filterWindow)
[NSBundle loadNibNamed:@"DFTLowPass" owner:self];
[filterWindow makeKeyAndOrderFront:nil];
/* now we read the default values and initialize all fields */
if ([autoRangeCheck state] == NSOnState)
autoRange = YES;
else
autoRange = NO;
passBandFreq = [passBandSlider floatValue];
[passBandVal setFloatValue:passBandFreq];
[passBandValPi setFloatValue:(passBandFreq*M_PI)];
stopBandFreq = [stopBandSlider floatValue];
[stopBandVal setFloatValue:stopBandFreq];
[stopBandValPi setFloatValue:(stopBandFreq*M_PI)];
}
- (IBAction)dftLPOK:(id)sender
{
PRCProgress *filterProgr;
filterProgr = [[PRCProgress alloc] init];
[filterProgr showProgress:self];
[filterProgr setTitle: @"Low Pass"];
[[[NSDocumentController sharedDocumentController] currentDocument] makeDFTLowPass :autoRange :passBandFreq :stopBandFreq :filterProgr];
[filterProgr release];
if ([[NSApp delegate] prefClosePanels])
[filterWindow performClose:nil];
}
- (IBAction)dftLPCancel:(id)sender
{
[filterWindow performClose:nil];
}
- (IBAction)dftLPAutoRange:(id)sender
{
if ([autoRangeCheck state] == NSOnState)
autoRange = YES;
else
autoRange = NO;
}
- (IBAction)changeStopBand:(id)sender
{
if (sender == stopBandValPi)
{
stopBandFreq = [sender floatValue] / M_PI;
if (stopBandFreq > 1)
{
stopBandFreq = 1;
[stopBandValPi setFloatValue:(stopBandFreq*M_PI)];
} else if (stopBandFreq < 0)
{
stopBandFreq = 0;
[stopBandValPi setFloatValue:(stopBandFreq*M_PI)];
}
[stopBandVal setFloatValue:stopBandFreq];
[stopBandSlider setFloatValue:stopBandFreq];
} else if (sender == stopBandVal)
{
stopBandFreq = [sender floatValue];
if (stopBandFreq > 1)
{
stopBandFreq = 1;
[stopBandVal setFloatValue:stopBandFreq];
} else if (passBandFreq < 0)
{
stopBandFreq = 0;
[stopBandVal setFloatValue:stopBandFreq];
}
[stopBandValPi setFloatValue:(stopBandFreq*M_PI)];
[stopBandSlider setFloatValue:stopBandFreq];
} else
{
stopBandFreq = [sender floatValue];
[stopBandVal setFloatValue:stopBandFreq];
[stopBandValPi setFloatValue:(stopBandFreq*M_PI)];
}
if (passBandFreq > stopBandFreq)
{
passBandFreq = stopBandFreq;
[passBandVal setFloatValue:passBandFreq];
[passBandValPi setFloatValue:(passBandFreq*M_PI)];
[passBandSlider setFloatValue:passBandFreq];
}
}
- (IBAction)changePassBand:(id)sender
{
if (sender == passBandValPi)
{
passBandFreq = [sender floatValue] / M_PI;
if (passBandFreq > 1)
{
passBandFreq = 1;
[passBandValPi setFloatValue:(passBandFreq*M_PI)];
} else if (passBandFreq < 0)
{
passBandFreq = 0;
[passBandValPi setFloatValue:(passBandFreq*M_PI)];
}
[passBandVal setFloatValue:passBandFreq];
[passBandSlider setFloatValue:passBandFreq];
} else if (sender == passBandVal)
{
passBandFreq = [sender floatValue];
if (passBandFreq > 1)
{
passBandFreq = 1;
[passBandVal setFloatValue:passBandFreq];
} else if (passBandFreq < 0)
{
passBandFreq = 0;
[passBandVal setFloatValue:passBandFreq];
}
[passBandValPi setFloatValue:(passBandFreq*M_PI)];
[passBandSlider setFloatValue:passBandFreq];
} else
{
passBandFreq = [sender floatValue];
[passBandVal setFloatValue:passBandFreq];
[passBandValPi setFloatValue:(passBandFreq*M_PI)];
}
if (stopBandFreq < passBandFreq)
{
stopBandFreq = passBandFreq;
[stopBandVal setFloatValue:stopBandFreq];
[stopBandValPi setFloatValue:(stopBandFreq*M_PI)];
[stopBandSlider setFloatValue:stopBandFreq];
}
}
@end
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