Using GLKMath from GLKit in Swift

So I'm using a book called iOS Games by tutorials from Ray Wenderlich and trying to utilize some of the objective-C code found there to make the accelerometer control of a character in my game work. Instead of Objective-C though, I want to use Swift. I ran into an issue when trying to create a var of type GLKVector3, which represents a 3D vector. When I type in:

var raw:GLKVector3 = GLKVector3Make(irrelevant stuff)

I get the following error:

use of module GLKVector3 as type.

I have an import at the top of my swift file for GLKit:

import GLKit

Any ideas how I can get the functionality from the GLKMath files to use in my program?

edited Nov 26 '18 at 7:28

Shruti Thombre

8311823

asked Jul 8 '14 at 1:43

DShaar

8026

add a comment |

var raw:GLKVector3 = GLKVector3Make(irrelevant stuff)

I get the following error:

use of module GLKVector3 as type.

I have an import at the top of my swift file for GLKit:

import GLKit

Any ideas how I can get the functionality from the GLKMath files to use in my program?

edited Nov 26 '18 at 7:28

Shruti Thombre

8311823

asked Jul 8 '14 at 1:43

DShaar

8026

add a comment |

var raw:GLKVector3 = GLKVector3Make(irrelevant stuff)

I get the following error:

use of module GLKVector3 as type.

I have an import at the top of my swift file for GLKit:

import GLKit

Any ideas how I can get the functionality from the GLKMath files to use in my program?

edited Nov 26 '18 at 7:28

Shruti Thombre

8311823

asked Jul 8 '14 at 1:43

DShaar

8026

var raw:GLKVector3 = GLKVector3Make(irrelevant stuff)

I get the following error:

use of module GLKVector3 as type.

I have an import at the top of my swift file for GLKit:

import GLKit

Any ideas how I can get the functionality from the GLKMath files to use in my program?

ios swift frameworks glkit

edited Nov 26 '18 at 7:28

Shruti Thombre

8311823

asked Jul 8 '14 at 1:43

DShaar

8026

edited Nov 26 '18 at 7:28

Shruti Thombre

8311823

asked Jul 8 '14 at 1:43

DShaar

8026

edited Nov 26 '18 at 7:28

Shruti Thombre

8311823

edited Nov 26 '18 at 7:28

Shruti Thombre

8311823

edited Nov 26 '18 at 7:28

Shruti Thombre

8311823

asked Jul 8 '14 at 1:43

DShaar

8026

asked Jul 8 '14 at 1:43

DShaar

8026

asked Jul 8 '14 at 1:43

DShaar

8026

add a comment |

3 Answers
3

active

oldest

votes

Swift has added union support in version 1.2. The fields in imported unions are read-only, even if declared with var, but can be passed to and from C functions as necessary.

The release notes for Swift 1.2 imply that the fields may not be accessible at all, but they are still readable for at least the GLKit types:

Swift can now partially import C aggregates containing unions, bitfields, SIMD vector types, and other C language features that are not natively supported in Swift. The unsupported fields will not be accessible from Swift, but C and Objective-C APIs that have arguments and return values of these types can be used in Swift. This includes the Foundation NSDecimal type and the GLKit GLKVector and GLKMatrix types, among others.

edited Feb 11 '15 at 5:16

answered Jul 8 '14 at 2:37

Nate Cook

76.2k26184163

1

Does this mean that I can't use GLKVector3 at all?

– DShaar
Jul 8 '14 at 3:00

3

So far as I can tell, not in Swift as it is today. They may implement unions in a coming version, but I haven't seen anything about that. File a bug report!

– Nate Cook
Jul 10 '14 at 2:50

For a possible workaround (create a C function) see: stackoverflow.com/questions/8262004/… Provided that the receiver (framework, objc library) already implements a union.

– LearnCocos2D
Jan 27 '15 at 16:50

@LearnCocos2D have you tried that? The problem is that Swift isn't bridging the GLKVector3 type, so the compiler won't recognize or allow any instances.

– Nate Cook
Jan 27 '15 at 19:08

1

you can wrap it in a objc interface that exposes glk structs as custom struct that swift can work with. Of course this stops being useful if you have to directly interface with an api that makes use of glkit structs, especially subclasses that override methods with glk struct params are not possible in swift.

– LearnCocos2D
Jan 27 '15 at 20:59

add a comment |

With the release of beta version of Xcode 6.3/Swift 1.2 yesterday (Feb 8, 2015) it is now possible to use GLKit from Swift.

answered Feb 10 '15 at 3:02

Johan Kool

13.1k65677

1

Any idea how to pass GLKMatrices as uniforms though? I'm trying to convert it to an UnsafePointer<Float>, without success. Would love some pointers, as it were!

– Gusutafu
Mar 14 '15 at 22:06

1

@Gusutafu var viewProj = GLKMatrix4Multiply(...) var pData = uniformBuffer.contents() pData.advancedBy(sizeof(GLKMatrix4) * inflightBufferIndex) let address = withUnsafePointer(&viewProj) { UnsafeMutablePointer<Float>($0) } memcpy(pData, address, sizeof(GLKMatrix4))

– aoakenfo
Apr 20 '15 at 19:03

add a comment |

Here check my repo: https://github.com/noxytrux/SwiftGeom i actually build a whole lib for that, so you are no more forced to use GLKit or wait for Apple to implement it in swift.

answered Oct 28 '14 at 19:35

Marcin Małysz

623811

add a comment |

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3 Answers
3

active

oldest

votes

3 Answers
3

active

oldest

votes

Swift has added union support in version 1.2. The fields in imported unions are read-only, even if declared with var, but can be passed to and from C functions as necessary.

The release notes for Swift 1.2 imply that the fields may not be accessible at all, but they are still readable for at least the GLKit types:

Swift can now partially import C aggregates containing unions, bitfields, SIMD vector types, and other C language features that are not natively supported in Swift. The unsupported fields will not be accessible from Swift, but C and Objective-C APIs that have arguments and return values of these types can be used in Swift. This includes the Foundation NSDecimal type and the GLKit GLKVector and GLKMatrix types, among others.

edited Feb 11 '15 at 5:16

answered Jul 8 '14 at 2:37

Nate Cook

76.2k26184163

1

Does this mean that I can't use GLKVector3 at all?

– DShaar
Jul 8 '14 at 3:00

3

So far as I can tell, not in Swift as it is today. They may implement unions in a coming version, but I haven't seen anything about that. File a bug report!

– Nate Cook
Jul 10 '14 at 2:50

For a possible workaround (create a C function) see: stackoverflow.com/questions/8262004/… Provided that the receiver (framework, objc library) already implements a union.

– LearnCocos2D
Jan 27 '15 at 16:50

@LearnCocos2D have you tried that? The problem is that Swift isn't bridging the GLKVector3 type, so the compiler won't recognize or allow any instances.

– Nate Cook
Jan 27 '15 at 19:08

1

you can wrap it in a objc interface that exposes glk structs as custom struct that swift can work with. Of course this stops being useful if you have to directly interface with an api that makes use of glkit structs, especially subclasses that override methods with glk struct params are not possible in swift.

– LearnCocos2D
Jan 27 '15 at 20:59

add a comment |

Swift has added union support in version 1.2. The fields in imported unions are read-only, even if declared with var, but can be passed to and from C functions as necessary.

The release notes for Swift 1.2 imply that the fields may not be accessible at all, but they are still readable for at least the GLKit types:

Swift can now partially import C aggregates containing unions, bitfields, SIMD vector types, and other C language features that are not natively supported in Swift. The unsupported fields will not be accessible from Swift, but C and Objective-C APIs that have arguments and return values of these types can be used in Swift. This includes the Foundation NSDecimal type and the GLKit GLKVector and GLKMatrix types, among others.

edited Feb 11 '15 at 5:16

answered Jul 8 '14 at 2:37

Nate Cook

76.2k26184163

1

Does this mean that I can't use GLKVector3 at all?

– DShaar
Jul 8 '14 at 3:00

3

So far as I can tell, not in Swift as it is today. They may implement unions in a coming version, but I haven't seen anything about that. File a bug report!

– Nate Cook
Jul 10 '14 at 2:50

For a possible workaround (create a C function) see: stackoverflow.com/questions/8262004/… Provided that the receiver (framework, objc library) already implements a union.

– LearnCocos2D
Jan 27 '15 at 16:50

@LearnCocos2D have you tried that? The problem is that Swift isn't bridging the GLKVector3 type, so the compiler won't recognize or allow any instances.

– Nate Cook
Jan 27 '15 at 19:08

1

you can wrap it in a objc interface that exposes glk structs as custom struct that swift can work with. Of course this stops being useful if you have to directly interface with an api that makes use of glkit structs, especially subclasses that override methods with glk struct params are not possible in swift.

– LearnCocos2D
Jan 27 '15 at 20:59

add a comment |

Swift has added union support in version 1.2. The fields in imported unions are read-only, even if declared with var, but can be passed to and from C functions as necessary.

The release notes for Swift 1.2 imply that the fields may not be accessible at all, but they are still readable for at least the GLKit types:

Swift can now partially import C aggregates containing unions, bitfields, SIMD vector types, and other C language features that are not natively supported in Swift. The unsupported fields will not be accessible from Swift, but C and Objective-C APIs that have arguments and return values of these types can be used in Swift. This includes the Foundation NSDecimal type and the GLKit GLKVector and GLKMatrix types, among others.

edited Feb 11 '15 at 5:16

answered Jul 8 '14 at 2:37

Nate Cook

76.2k26184163

Swift has added union support in version 1.2. The fields in imported unions are read-only, even if declared with var, but can be passed to and from C functions as necessary.

The release notes for Swift 1.2 imply that the fields may not be accessible at all, but they are still readable for at least the GLKit types:

Swift can now partially import C aggregates containing unions, bitfields, SIMD vector types, and other C language features that are not natively supported in Swift. The unsupported fields will not be accessible from Swift, but C and Objective-C APIs that have arguments and return values of these types can be used in Swift. This includes the Foundation NSDecimal type and the GLKit GLKVector and GLKMatrix types, among others.

edited Feb 11 '15 at 5:16

answered Jul 8 '14 at 2:37

Nate Cook

76.2k26184163

edited Feb 11 '15 at 5:16

answered Jul 8 '14 at 2:37

Nate Cook

76.2k26184163

answered Jul 8 '14 at 2:37

Nate Cook

76.2k26184163

answered Jul 8 '14 at 2:37

Nate Cook

76.2k26184163

1

Does this mean that I can't use GLKVector3 at all?

– DShaar
Jul 8 '14 at 3:00

3

So far as I can tell, not in Swift as it is today. They may implement unions in a coming version, but I haven't seen anything about that. File a bug report!

– Nate Cook
Jul 10 '14 at 2:50

For a possible workaround (create a C function) see: stackoverflow.com/questions/8262004/… Provided that the receiver (framework, objc library) already implements a union.

– LearnCocos2D
Jan 27 '15 at 16:50

@LearnCocos2D have you tried that? The problem is that Swift isn't bridging the GLKVector3 type, so the compiler won't recognize or allow any instances.

– Nate Cook
Jan 27 '15 at 19:08

1

you can wrap it in a objc interface that exposes glk structs as custom struct that swift can work with. Of course this stops being useful if you have to directly interface with an api that makes use of glkit structs, especially subclasses that override methods with glk struct params are not possible in swift.

– LearnCocos2D
Jan 27 '15 at 20:59

add a comment |

1

Does this mean that I can't use GLKVector3 at all?

– DShaar
Jul 8 '14 at 3:00

3

So far as I can tell, not in Swift as it is today. They may implement unions in a coming version, but I haven't seen anything about that. File a bug report!

– Nate Cook
Jul 10 '14 at 2:50

For a possible workaround (create a C function) see: stackoverflow.com/questions/8262004/… Provided that the receiver (framework, objc library) already implements a union.

– LearnCocos2D
Jan 27 '15 at 16:50

@LearnCocos2D have you tried that? The problem is that Swift isn't bridging the GLKVector3 type, so the compiler won't recognize or allow any instances.

– Nate Cook
Jan 27 '15 at 19:08

1

you can wrap it in a objc interface that exposes glk structs as custom struct that swift can work with. Of course this stops being useful if you have to directly interface with an api that makes use of glkit structs, especially subclasses that override methods with glk struct params are not possible in swift.

– LearnCocos2D
Jan 27 '15 at 20:59

Does this mean that I can't use GLKVector3 at all?

– DShaar
Jul 8 '14 at 3:00

So far as I can tell, not in Swift as it is today. They may implement unions in a coming version, but I haven't seen anything about that. File a bug report!

– Nate Cook
Jul 10 '14 at 2:50

For a possible workaround (create a C function) see: stackoverflow.com/questions/8262004/… Provided that the receiver (framework, objc library) already implements a union.

– LearnCocos2D
Jan 27 '15 at 16:50

@LearnCocos2D have you tried that? The problem is that Swift isn't bridging the GLKVector3 type, so the compiler won't recognize or allow any instances.

– Nate Cook
Jan 27 '15 at 19:08

you can wrap it in a objc interface that exposes glk structs as custom struct that swift can work with. Of course this stops being useful if you have to directly interface with an api that makes use of glkit structs, especially subclasses that override methods with glk struct params are not possible in swift.

– LearnCocos2D
Jan 27 '15 at 20:59

add a comment |

With the release of beta version of Xcode 6.3/Swift 1.2 yesterday (Feb 8, 2015) it is now possible to use GLKit from Swift.

answered Feb 10 '15 at 3:02

Johan Kool

13.1k65677

1

Any idea how to pass GLKMatrices as uniforms though? I'm trying to convert it to an UnsafePointer<Float>, without success. Would love some pointers, as it were!

– Gusutafu
Mar 14 '15 at 22:06

1

@Gusutafu var viewProj = GLKMatrix4Multiply(...) var pData = uniformBuffer.contents() pData.advancedBy(sizeof(GLKMatrix4) * inflightBufferIndex) let address = withUnsafePointer(&viewProj) { UnsafeMutablePointer<Float>($0) } memcpy(pData, address, sizeof(GLKMatrix4))

– aoakenfo
Apr 20 '15 at 19:03

add a comment |

With the release of beta version of Xcode 6.3/Swift 1.2 yesterday (Feb 8, 2015) it is now possible to use GLKit from Swift.

answered Feb 10 '15 at 3:02

Johan Kool

13.1k65677

1

Any idea how to pass GLKMatrices as uniforms though? I'm trying to convert it to an UnsafePointer<Float>, without success. Would love some pointers, as it were!

– Gusutafu
Mar 14 '15 at 22:06

1

@Gusutafu var viewProj = GLKMatrix4Multiply(...) var pData = uniformBuffer.contents() pData.advancedBy(sizeof(GLKMatrix4) * inflightBufferIndex) let address = withUnsafePointer(&viewProj) { UnsafeMutablePointer<Float>($0) } memcpy(pData, address, sizeof(GLKMatrix4))

– aoakenfo
Apr 20 '15 at 19:03

add a comment |

With the release of beta version of Xcode 6.3/Swift 1.2 yesterday (Feb 8, 2015) it is now possible to use GLKit from Swift.

answered Feb 10 '15 at 3:02

Johan Kool

13.1k65677

With the release of beta version of Xcode 6.3/Swift 1.2 yesterday (Feb 8, 2015) it is now possible to use GLKit from Swift.

answered Feb 10 '15 at 3:02

Johan Kool

13.1k65677

answered Feb 10 '15 at 3:02

Johan Kool

13.1k65677

answered Feb 10 '15 at 3:02

Johan Kool

13.1k65677

answered Feb 10 '15 at 3:02

Johan Kool

13.1k65677

1

Any idea how to pass GLKMatrices as uniforms though? I'm trying to convert it to an UnsafePointer<Float>, without success. Would love some pointers, as it were!

– Gusutafu
Mar 14 '15 at 22:06

1

@Gusutafu var viewProj = GLKMatrix4Multiply(...) var pData = uniformBuffer.contents() pData.advancedBy(sizeof(GLKMatrix4) * inflightBufferIndex) let address = withUnsafePointer(&viewProj) { UnsafeMutablePointer<Float>($0) } memcpy(pData, address, sizeof(GLKMatrix4))

– aoakenfo
Apr 20 '15 at 19:03

add a comment |

1

Any idea how to pass GLKMatrices as uniforms though? I'm trying to convert it to an UnsafePointer<Float>, without success. Would love some pointers, as it were!

– Gusutafu
Mar 14 '15 at 22:06

1

@Gusutafu var viewProj = GLKMatrix4Multiply(...) var pData = uniformBuffer.contents() pData.advancedBy(sizeof(GLKMatrix4) * inflightBufferIndex) let address = withUnsafePointer(&viewProj) { UnsafeMutablePointer<Float>($0) } memcpy(pData, address, sizeof(GLKMatrix4))

– aoakenfo
Apr 20 '15 at 19:03

Any idea how to pass GLKMatrices as uniforms though? I'm trying to convert it to an UnsafePointer<Float>, without success. Would love some pointers, as it were!

– Gusutafu
Mar 14 '15 at 22:06

@Gusutafu

var viewProj = GLKMatrix4Multiply(...)          var pData = uniformBuffer.contents() pData.advancedBy(sizeof(GLKMatrix4) * inflightBufferIndex) let address = withUnsafePointer(&viewProj) { UnsafeMutablePointer<Float>($0) } memcpy(pData, address, sizeof(GLKMatrix4))

– aoakenfo
Apr 20 '15 at 19:03

@Gusutafu

var viewProj = GLKMatrix4Multiply(...)          var pData = uniformBuffer.contents() pData.advancedBy(sizeof(GLKMatrix4) * inflightBufferIndex) let address = withUnsafePointer(&viewProj) { UnsafeMutablePointer<Float>($0) } memcpy(pData, address, sizeof(GLKMatrix4))

– aoakenfo
Apr 20 '15 at 19:03

add a comment |

Here check my repo: https://github.com/noxytrux/SwiftGeom i actually build a whole lib for that, so you are no more forced to use GLKit or wait for Apple to implement it in swift.

answered Oct 28 '14 at 19:35

Marcin Małysz

623811

add a comment |

Here check my repo: https://github.com/noxytrux/SwiftGeom i actually build a whole lib for that, so you are no more forced to use GLKit or wait for Apple to implement it in swift.

answered Oct 28 '14 at 19:35

Marcin Małysz

623811

add a comment |

Here check my repo: https://github.com/noxytrux/SwiftGeom i actually build a whole lib for that, so you are no more forced to use GLKit or wait for Apple to implement it in swift.

answered Oct 28 '14 at 19:35

Marcin Małysz

623811

Here check my repo: https://github.com/noxytrux/SwiftGeom i actually build a whole lib for that, so you are no more forced to use GLKit or wait for Apple to implement it in swift.

answered Oct 28 '14 at 19:35

Marcin Małysz

623811

answered Oct 28 '14 at 19:35

Marcin Małysz

623811

answered Oct 28 '14 at 19:35

Marcin Małysz

623811

answered Oct 28 '14 at 19:35

Marcin Małysz

623811

add a comment |

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