Skip to content
master
Switch branches/tags
Code
This branch is 14 commits ahead, 23 commits behind robbykraft/Panorama:master.
Contribute

Latest commit

 

Git stats

Files

Permalink
Failed to load latest commit information.
Type
Name
Latest commit message
Commit time
 
 
 
 
 
 
 
 

360° panorama view

equirectangular projections

OpenGL, device-oriented, touch-interactive

sample

acceptable image sizes: (4096×2048), 2048×1024, 1024×512, 512×256, 256×128 ...

  • (4096 supported on iPhone 4s and iPad2 onward)

#methods

image

-(void) setImage:(NSString*)fileName;  // path or bundle. will check at both

orientation

 // auto-update (usually only one of these at a time is recommended)
-(void) setOrientToDevice:(BOOL)   // activate motion sensors
-(void) setTouchToPan:(BOOL)       // activate UIPanGesture

 // aligns z-axis (into screen)
-(void) orientToVector:(GLKVector3)
-(void) orientToAzimuth:(float) Altitude:(float)

field of view

-(void) setFieldOfView:(float)     // in degrees
-(void) setPinchToZoom:(BOOL)      // activate UIPinchGesture

touches

-(void) setShowTouches:(BOOL)      // overlay latitude longitude intersects
-(BOOL) touchInRect:(CGRect)       // hotspot detection in world coordinates

2D - 3D conversion

-(CGPoint) screenLocationFromVector:(GLKVector3) // 2D screen point from a 3D point
-(GLKVector3) vectorFromScreenLocation:(CGPoint) // 3D point from 2D screen point
-(CGPoint) imagePixelAtScreenLocation:(CGPoint)  // 3D point from 2D screen point
  // except this 3D point is expressed as 2D pixel unit in the panorama image

usage

make your ViewController a subclass of GLKViewController

panoramaView = [[PanoramaView alloc] init];
 // load image and any other customization
[self setView:panoramaView];

also in your GLKViewController:

-(void) glkView:(GLKView *)view drawInRect:(CGRect)rect{
    [panoramaView draw];
}

make sure

  • no device landscape/portrait auto-rotation

device

  • works properly under any of the 4 device orientations

orientation

  • azimuth and altitude
  • look direction, the Z vector pointing through the center of the screen

coordinates

The program begins by facing the center column of the image, or azimuth 0°

wikipedia

about equirectangular

equirectangular images mapped to the inside of a celestial sphere come out looking like the original scene, and the math is relatively simple http://en.wikipedia.org/wiki/Equirectangular_projection

license

MIT

About

Spherical panorama view, iOS

Resources

License

Stars

Watchers

Forks

Packages

No packages published