1 /* Copyright � 2007 Apple Inc. All Rights Reserved. 2 3 Disclaimer: IMPORTANT: This Apple software is supplied to you by 4 Apple Inc. ("Apple") in consideration of your agreement to the 5 following terms, and your use, installation, modification or 6 redistribution of this Apple software constitutes acceptance of these 7 terms. If you do not agree with these terms, please do not use, 8 install, modify or redistribute this Apple software. 9 10 In consideration of your agreement to abide by the following terms, and 11 subject to these terms, Apple grants you a personal, non-exclusive 12 license, under Apple's copyrights in this original Apple software (the 13 "Apple Software"), to use, reproduce, modify and redistribute the Apple 14 Software, with or without modifications, in source and/or binary forms; 15 provided that if you redistribute the Apple Software in its entirety and 16 without modifications, you must retain this notice and the following 17 text and disclaimers in all such redistributions of the Apple Software. 18 Neither the name, trademarks, service marks or logos of Apple Inc. 19 may be used to endorse or promote products derived from the Apple 20 Software without specific prior written permission from Apple. Except 21 as expressly stated in this notice, no other rights or licenses, express 22 or implied, are granted by Apple herein, including but not limited to 23 any patent rights that may be infringed by your derivative works or by 24 other works in which the Apple Software may be incorporated. 25 26 The Apple Software is provided by Apple on an "AS IS" basis. APPLE 27 MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION 28 THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS 29 FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND 30 OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. 31 32 IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL 33 OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, 36 MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED 37 AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), 38 STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE 39 POSSIBILITY OF SUCH DAMAGE. 40 */ 41 #import <Cocoa/Cocoa.h> 42 43 // One data point for the filter frequency response 44 // for the filter frequency response. 45 46 typedef struct FrequencyResponse { 47 Float32 mFrequency; 48 Float32 mMagnitude; 49 } FrequencyResponse; 50 51 // number of data points in the filter frequency response 52 53 #define kNumberOfResponseFrequencies 512 54 55 56 /************************************************************************************************************/ 57 /* NOTE: It is important to rename ALL ui classes when using the XCode Audio Unit with Cocoa View template */ 58 /* Cocoa has a flat namespace, and if you use the default filenames, it is possible that you will */ 59 /* get a namespace collision with classes from the cocoa view of a previously loaded audio unit. */ 60 /* We recommend that you use a unique prefix that includes the manufacturer name and unit name on */ 61 /* all objective-C source files. You may use an underscore in your name, but please refrain from */ 62 /* starting your class name with an undescore as these names are reserved for Apple. */ 63 /************************************************************************************************************/ 64 65 @interface UCBLopassFilter_GraphView : NSView 66 { 67 NSRect mGraphFrame; // This is the frame of the drawing area of the view 68 float mActiveWidth; // The usable portion of the graph 69 NSPoint mEditPoint; // This is the current location in the drawing area that is active 70 BOOL mMouseDown; // True if the mouse is currently down 71 72 NSColor *curveColor; // the current color of the graph curve 73 74 NSImage *mBackgroundCache; // An image cache of the background so that we don't have to re-draw the grid lines and labels all the time 75 76 float mRes; // internal copy of the resonance value 77 float mFreq; // internal copy of the frequency value 78 79 NSBezierPath *mCurvePath; // The bezier path that is used to draw the curve. 80 81 NSDictionary *mDBAxisStringAttributes; // Text attributes used to draw the strings on the db axis 82 NSDictionary *mFreqAxisStringAttributes; // Text attributes used to draw the strings on the frequency axis 83 } 84 85 -(void) setRes: (float) res; // sets the graph's internal resonance value (to match the au) 86 -(void) setFreq: (float) freq; // sets the graphs' internal frequency value (to match the au 87 88 -(float)getRes; // gets the graph's internal resonance value (so the au can match the graph) 89 -(float)getFreq; // gets the graph's internal frequency value (so the au can match the graph) 90 91 -(double) locationForFrequencyValue: (double) value; // converts a frequency value to the pixel coordinate in the graph 92 -(double) locationForDBValue: (double) value; // converts a db value to the pixel coordinate in the graph 93 94 -(FrequencyResponse *) prepareDataForDrawing: (FrequencyResponse *) data; // prepares the data for drawing by initializing frequency fields based on values on pixel boundaries 95 -(void) plotData: (FrequencyResponse *) data; // draws the curve data 96 -(void) disableGraphCurve; // update the view, but don't draw the curve (used when the AU is not initialized and the curve can not be retrieved) 97 98 -(void) handleBeginGesture; // called when parameter automation started 99 -(void) handleEndGesture; // called when parameter automation finished 100 101 @end 102