How to Import C++ vector data to Swift
I have a C++ function that gets called by Swift that I need to return a vector of UIIMage's std::vector<UIImage *>. The only problem is I don't know how to retrieve the value of the vector.
C++ file 1:
// OpenCVWrapper.h
#import <UIKit/UIKit.h>
@interface OpenCVWrapper : NSObject
+(???) convert:(UIImage *) image;
@end
file 2:
// OpenCVWrapper.mm
#import "OpenCVWrapper.h"
#import <opencv2/opencv.hpp>
#import <opencv2/imgcodecs/ios.h>
class Converter {
public:
UIImage *image;
std::vector<UIImage *> main() {
// run code
return finalImage;
};
};
@implementation OpenCVWrapper
+(std::vector<UIImage *>) convert:(UIImage *)image {
Converter converter;
converter.image = image;
std::vector<UIImage *>newImage = converter.main();
return newImage;
}
@end
Swift:
var multipleImages = OpenCVWrapper.convert(originalImage) //want array
I'm aware Swift doesn't import c++ data structures, I'm looking to extract the values from the vector.
Thanks in advance.
c++ swift vector
asked Nov 21 '18 at 0:20
Cristian
85115
add a comment |
I have a C++ function that gets called by Swift that I need to return a vector of UIIMage's std::vector<UIImage *>. The only problem is I don't know how to retrieve the value of the vector.
C++ file 1:
// OpenCVWrapper.h
#import <UIKit/UIKit.h>
@interface OpenCVWrapper : NSObject
+(???) convert:(UIImage *) image;
@end
file 2:
// OpenCVWrapper.mm
#import "OpenCVWrapper.h"
#import <opencv2/opencv.hpp>
#import <opencv2/imgcodecs/ios.h>
class Converter {
public:
UIImage *image;
std::vector<UIImage *> main() {
// run code
return finalImage;
};
};
@implementation OpenCVWrapper
+(std::vector<UIImage *>) convert:(UIImage *)image {
Converter converter;
converter.image = image;
std::vector<UIImage *>newImage = converter.main();
return newImage;
}
@end
Swift:
var multipleImages = OpenCVWrapper.convert(originalImage) //want array
I'm aware Swift doesn't import c++ data structures, I'm looking to extract the values from the vector.
Thanks in advance.
c++ swift vector
asked Nov 21 '18 at 0:20
Cristian
85115
1
std::vector::dataalong with another parameter for the length usually works.
– user4581301
Nov 21 '18 at 0:40
add a comment |
I have a C++ function that gets called by Swift that I need to return a vector of UIIMage's std::vector<UIImage *>. The only problem is I don't know how to retrieve the value of the vector.
C++ file 1:
// OpenCVWrapper.h
#import <UIKit/UIKit.h>
@interface OpenCVWrapper : NSObject
+(???) convert:(UIImage *) image;
@end
file 2:
// OpenCVWrapper.mm
#import "OpenCVWrapper.h"
#import <opencv2/opencv.hpp>
#import <opencv2/imgcodecs/ios.h>
class Converter {
public:
UIImage *image;
std::vector<UIImage *> main() {
// run code
return finalImage;
};
};
@implementation OpenCVWrapper
+(std::vector<UIImage *>) convert:(UIImage *)image {
Converter converter;
converter.image = image;
std::vector<UIImage *>newImage = converter.main();
return newImage;
}
@end
Swift:
var multipleImages = OpenCVWrapper.convert(originalImage) //want array
I'm aware Swift doesn't import c++ data structures, I'm looking to extract the values from the vector.
Thanks in advance.
c++ swift vector
asked Nov 21 '18 at 0:20
Cristian
85115
I have a C++ function that gets called by Swift that I need to return a vector of UIIMage's std::vector<UIImage *>. The only problem is I don't know how to retrieve the value of the vector.
C++ file 1:
// OpenCVWrapper.h
#import <UIKit/UIKit.h>
@interface OpenCVWrapper : NSObject
+(???) convert:(UIImage *) image;
@end
file 2:
// OpenCVWrapper.mm
#import "OpenCVWrapper.h"
#import <opencv2/opencv.hpp>
#import <opencv2/imgcodecs/ios.h>
class Converter {
public:
UIImage *image;
std::vector<UIImage *> main() {
// run code
return finalImage;
};
};
@implementation OpenCVWrapper
+(std::vector<UIImage *>) convert:(UIImage *)image {
Converter converter;
converter.image = image;
std::vector<UIImage *>newImage = converter.main();
return newImage;
}
@end
Swift:
var multipleImages = OpenCVWrapper.convert(originalImage) //want array
I'm aware Swift doesn't import c++ data structures, I'm looking to extract the values from the vector.
Thanks in advance.
c++ swift vector
c++ swift vector
asked Nov 21 '18 at 0:20
Cristian
85115
asked Nov 21 '18 at 0:20
Cristian
85115
edited Nov 21 '18 at 0:26
asked Nov 21 '18 at 0:20
Cristian
85115
asked Nov 21 '18 at 0:20
Cristian
85115
asked Nov 21 '18 at 0:20
Cristian
85115
85115
1
std::vector::dataalong with another parameter for the length usually works.
– user4581301
Nov 21 '18 at 0:40
add a comment |
1
std::vector::dataalong with another parameter for the length usually works.
– user4581301
Nov 21 '18 at 0:40
1
1
std::vector::dataalong with another parameter for the length usually works.– user4581301
Nov 21 '18 at 0:40
std::vector::dataalong with another parameter for the length usually works.– user4581301
Nov 21 '18 at 0:40
add a comment |
1 Answer
1
active
oldest
votes
You can't use std::vector from Swift, so don't return a std::vector.
Since your vector contains instances of UIImage, simply return a NSArray:
+ ( NSArray< UIImage * > * )convert: ( UIImage * )image
{
Converter converter;
converter.image = image;
NSMutableArray * images = [ NSMutableArray new ];
for( auto i: converter.main() )
{
[ images addObject: i ];
}
return images;
}
answered Nov 21 '18 at 15:02
Macmade
41.9k1192113
Thank you, this is exactly what I was looking for
– Cristian
Nov 21 '18 at 17:10
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can't use std::vector from Swift, so don't return a std::vector.
Since your vector contains instances of UIImage, simply return a NSArray:
+ ( NSArray< UIImage * > * )convert: ( UIImage * )image
{
Converter converter;
converter.image = image;
NSMutableArray * images = [ NSMutableArray new ];
for( auto i: converter.main() )
{
[ images addObject: i ];
}
return images;
}
answered Nov 21 '18 at 15:02
Macmade
41.9k1192113
Thank you, this is exactly what I was looking for
– Cristian
Nov 21 '18 at 17:10
add a comment |
You can't use std::vector from Swift, so don't return a std::vector.
Since your vector contains instances of UIImage, simply return a NSArray:
+ ( NSArray< UIImage * > * )convert: ( UIImage * )image
{
Converter converter;
converter.image = image;
NSMutableArray * images = [ NSMutableArray new ];
for( auto i: converter.main() )
{
[ images addObject: i ];
}
return images;
}
answered Nov 21 '18 at 15:02
Macmade
41.9k1192113
Thank you, this is exactly what I was looking for
– Cristian
Nov 21 '18 at 17:10
add a comment |
You can't use std::vector from Swift, so don't return a std::vector.
Since your vector contains instances of UIImage, simply return a NSArray:
+ ( NSArray< UIImage * > * )convert: ( UIImage * )image
{
Converter converter;
converter.image = image;
NSMutableArray * images = [ NSMutableArray new ];
for( auto i: converter.main() )
{
[ images addObject: i ];
}
return images;
}
answered Nov 21 '18 at 15:02
Macmade
41.9k1192113
You can't use std::vector from Swift, so don't return a std::vector.
Since your vector contains instances of UIImage, simply return a NSArray:
+ ( NSArray< UIImage * > * )convert: ( UIImage * )image
{
Converter converter;
converter.image = image;
NSMutableArray * images = [ NSMutableArray new ];
for( auto i: converter.main() )
{
[ images addObject: i ];
}
return images;
}
answered Nov 21 '18 at 15:02
Macmade
41.9k1192113
edited Nov 21 '18 at 15:51
answered Nov 21 '18 at 15:02
Macmade
41.9k1192113
answered Nov 21 '18 at 15:02
Macmade
41.9k1192113
answered Nov 21 '18 at 15:02
Macmade
41.9k1192113
41.9k1192113
Thank you, this is exactly what I was looking for
– Cristian
Nov 21 '18 at 17:10
add a comment |
Thank you, this is exactly what I was looking for
– Cristian
Nov 21 '18 at 17:10
Thank you, this is exactly what I was looking for
– Cristian
Nov 21 '18 at 17:10
Thank you, this is exactly what I was looking for
– Cristian
Nov 21 '18 at 17:10
add a comment |
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1
std::vector::dataalong with another parameter for the length usually works.– user4581301
Nov 21 '18 at 0:40