Chris dennda
dennda
/ gist:1227773
Created
September 19, 2011 22:23
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| uint16_t pix = 0; | |
| uint16_t min = 34464; | |
| uint16_t max = 0; | |
| uint16_t *d = (uint16_t*) imgData; | |
| for (int i = 0; i < 512 * 512; i++) { | |
| pix = d[i]; | |
| if (pix > max) | |
| max = pix; | |
| else if (pix < min) | |
| min = pix; |
dennda
/ gist:1227840
Created
September 19, 2011 22:59
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| uint16_t pix; | |
| uint16_t min = 34464; | |
| uint16_t max = 0; | |
| uint16_t *d = (uint16_t*) imgData; | |
| for (int i = 0; i < 512 * 512; i++) { | |
| pix = d[i]; | |
| if (pix > max) | |
| max = pix; | |
| else if (pix < min) | |
| min = pix; |
dennda
/ gist:1227860
Created
September 19, 2011 23:08
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| CGDataProviderRef provider = CGDataProviderCreateWithCFData((__bridge CFDataRef) data); | |
| CGColorSpaceRef colorspace = CGColorSpaceCreateDeviceGray(); | |
| CGImageRef img = CGImageCreate(width, height, bits_allocated, bits_allocated, | |
| width,// * (bits_allocated / 8), | |
| colorspace, | |
| kCGBitmapByteOrderDefault, | |
| provider, NULL, YES, | |
| kCGRenderingIntentDefault | |
| ); |
dennda
/ gist:1233109
Created
September 21, 2011 19:52
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| // In the interface: | |
| @interface TransferFunction : NSObject { | |
| id <TransferFunctionDrawingDelegate> _delegate; | |
| } | |
| @property (nonatomic, weak) id <TransferFunctionDrawingDelegate> delegate; | |
| // In the implementation: | |
| @synthesize delegate=setDelegate; | |
| - (void)setDelegate:(id <TransferFunctionDrawingDelegate>)delegate { |
dennda
/ gist:1233573
Created
September 21, 2011 23:03
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| uint16_t *remapped = (uint16_t*) malloc(width * height * sizeof(uint16_t)); | |
| vImage_Buffer src = {imgData, | |
| (vImagePixelCount) height, | |
| (vImagePixelCount) width, | |
| bytes_per_row | |
| }; | |
| vImage_Buffer dst = {remapped, | |
| (vImagePixelCount) height, | |
| (vImagePixelCount) width, | |
| bytes_per_row |
dennda
/ gist:1235825
Created
September 22, 2011 19:48
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| NSMutableArray *histo = [NSMutableArray array]; | |
| for (int i = 0; i < num_bins; i++) | |
| [histo insertObject:[NSNumber numberWithUnsignedLong:histogram[i]] atIndex:i]; |
dennda
/ gist:1251545
Created
September 29, 2011 18:41
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| uint8 *fourchan = (uint8*) malloc(sizeof(uint8) * width * height * 4); | |
| short cur; | |
| short *subscript = (short*) imgData; | |
| for (int i = 0; i < width * height; i++) { | |
| cur = (subscript[i] + 1000) / (int) pow(2., sizeof(short)/2.); | |
| fourchan[i*4] = (uint8) cur; | |
| } |
dennda
/ gist:1251646
Created
September 29, 2011 19:12
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| uint8 *fourchan = (uint8*) malloc(sizeof(uint8) * width * height * 4); | |
| short cur; | |
| short *subscript = (short*) imgData; | |
| for (int i = 0; i < width * height; i++) { | |
| cur = subscript[i] + 1000; | |
| fourchan[i*4] = cur; | |
| } |
dennda
/ gist:1260548
Created
October 3, 2011 23:38
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| // works: | |
| return [TransferFunctionPoint pointWithX:x | |
| Y:intercol.w | |
| Color:[UIColor greenColor]]; | |
| // runtime error: | |
| return [TransferFunctionPoint pointWithX:x | |
| Y:intercol.w | |
| Color:[UIColor colorWithRed:1. green:1. blue:0. alpha:1.]]; |
dennda
/ gist:1260558
Created
October 3, 2011 23:44
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| + (TransferFunctionPoint *)pointWithX:(double)_x Y:(double)_y Color:(UIColor*)_color { | |
| TransferFunctionPoint *p = [[[self class] alloc] init]; | |
| p.x = _x; | |
| p.y = _y; | |
| p.color = _color; | |
| return p; | |
| } |