init - 初始化项目
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87
modules/core/misc/objc/common/MatOfKeyPoint.mm
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87
modules/core/misc/objc/common/MatOfKeyPoint.mm
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//
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// MatOfKeyPoint.m
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//
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// Created by Giles Payne on 2019/12/27.
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//
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#import "MatOfKeyPoint.h"
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#import "Range.h"
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#import "Point2f.h"
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#import "KeyPoint.h"
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#import "CvType.h"
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#import "ArrayUtil.h"
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@implementation MatOfKeyPoint
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static const int _depth = CV_32F;
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static const int _channels = 7;
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#ifdef __cplusplus
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- (instancetype)initWithNativeMat:(cv::Mat*)nativeMat {
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self = [super initWithNativeMat:nativeMat];
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if (self && ![self empty] && [self checkVector:_channels depth:_depth] < 0) {
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@throw [NSException exceptionWithName:NSInvalidArgumentException reason:@"Incompatible Mat" userInfo:nil];
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}
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return self;
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}
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#endif
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- (instancetype)initWithMat:(Mat*)mat {
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self = [super initWithMat:mat rowRange:[Range all]];
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if (self && ![self empty] && [self checkVector:_channels depth:_depth] < 0) {
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@throw [NSException exceptionWithName:NSInvalidArgumentException reason:@"Incompatible Mat" userInfo:nil];
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}
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return self;
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}
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- (instancetype)initWithArray:(NSArray<KeyPoint*>*)array {
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self = [super init];
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if (self) {
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[self fromArray:array];
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}
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return self;
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}
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- (void)alloc:(int)elemNumber {
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if (elemNumber>0) {
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[super create:elemNumber cols:1 type:[CvType makeType:_depth channels:_channels]];
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}
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}
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- (void)fromArray:(NSArray<KeyPoint*>*)array {
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NSMutableArray<NSNumber*>* data = [[NSMutableArray alloc] initWithCapacity:array.count * _channels];
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for (int index = 0; index < (int)array.count; index++) {
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data[_channels * index] = [NSNumber numberWithFloat:array[index].pt.x];
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data[_channels * index + 1] = [NSNumber numberWithFloat:array[index].pt.y];
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data[_channels * index + 2] = [NSNumber numberWithFloat:array[index].size];
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data[_channels * index + 3] = [NSNumber numberWithFloat:array[index].angle];
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data[_channels * index + 4] = [NSNumber numberWithFloat:array[index].response];
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data[_channels * index + 5] = [NSNumber numberWithFloat:array[index].octave];
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data[_channels * index + 6] = [NSNumber numberWithFloat:array[index].classId];
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}
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[self alloc:(int)array.count];
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[self put:0 col:0 data:data];
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}
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- (NSArray<KeyPoint*>*)toArray {
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int length = [self length] / _channels;
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NSMutableArray<KeyPoint*>* ret = createArrayWithSize(length, [KeyPoint new]);
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if (length > 0) {
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NSMutableArray<NSNumber*>* data = createArrayWithSize([self length], @0.0);
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[self get:0 col:0 data:data];
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for (int index = 0; index < length; index++) {
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ret[index] = [[KeyPoint alloc] initWithX:data[index * _channels].floatValue y:data[index * _channels + 1].floatValue size:data[index * _channels + 2].floatValue angle:data[index * _channels + 3].floatValue response:data[index * _channels + 4].floatValue octave:data[index * _channels + 5].intValue classId:data[index * _channels + 6].intValue];
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}
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}
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return ret;
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}
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- (int)length {
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int num = [self checkVector:_channels depth:_depth];
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if (num < 0) {
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@throw [NSException exceptionWithName:NSInternalInconsistencyException reason:@"Incompatible Mat" userInfo:nil];
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}
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return num * _channels;
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}
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@end
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