2014/10/15 下午 10:12:38

iphone Programming Glossary: plane

Scaling AR pictures based on the distance from the camera

http://stackoverflow.com/questions/11913355/scaling-ar-pictures-based-on-the-distance-from-the-camera

may be understood as a billboard which has its geographical position and a heading understood as an angle between its plane and the north direction axis . The goal is to make these billboards display more or less like they were physical objects...

Boundry detect paper sheet opencv

http://stackoverflow.com/questions/13493035/boundry-detect-paper-sheet-opencv

medianBlur image blurred 9 Mat gray0 image.size CV_8U gray vector vector cv Point contours find squares in every color plane of the image for int c 0 c 3 c int ch c 0 mixChannels image 1 gray0 1 ch 1 try several threshold levels const int threshold_level..

OpenGL ES (iPhone) Touch Picking

http://stackoverflow.com/questions/2231433/opengl-es-iphone-touch-picking

1 w 2 a 2 vector 0 a 0 vector 1 a 1 vector 2 a 2 vector 3 w 0 vector 4 w 1 vector 5 10.0f 3 non colinear points on the plane GLfloat p1 rect.origin.x rect.origin.y 0 GLfloat p2 rect.origin.x rect.size.width rect.origin.y 0 GLfloat p3 rect.origin.x.. rect.size.width rect.origin.y 0 GLfloat p3 rect.origin.x rect.size.width rect.origin.y rect.size.height 0 location plane normal vector Ax By Cz D 0 GLfloat lp p1 1 p2 2 p3 2 p2 1 p3 2 p1 2 p3 1 p1 2 p2 2 p1 2 p2 0 p3 0 p2 2 p3 0 p1 0 p3 2 p1..

Detecting Acceleration in a car (iPhone Accelerometer)

http://stackoverflow.com/questions/2733249/detecting-acceleration-in-a-car-iphone-accelerometer

this will be difficult and let's concentrate on the math 3 From the forward vector and the gravity vector construct a plane. 4 Whenever a force is received project it onto said plane to get rid of sideways force etc. 5 Then use that force the known.. From the forward vector and the gravity vector construct a plane. 4 Whenever a force is received project it onto said plane to get rid of sideways force etc. 5 Then use that force the known magnitude of gravity and the known direction of forward..

How do I stack images to simulate depth using Core Animation?

http://stackoverflow.com/questions/2834985/how-do-i-stack-images-to-simulate-depth-using-core-animation

rotate the parent view and the images should look like they're stacked visibly in front of each other not on the same plane. I made a new ViewController based project and put this in the viewDidLoad as well as attached three 120x120 pixel images.. layer that's what the m34 component of the CATransform3D matrix does . You are not actually displacing them in the Z plane. You could use a transform for this but I find that the zPosition property of your CALayers provides a cleaner way to locate..

Custom view transition in OpenGL ES

http://stackoverflow.com/questions/309880/custom-view-transition-in-opengl-es

animated YES I have prepared an OpenGL based view that performs an effect on some static texture mapped to a plane let's say it's a copy of the flip effect in Core Animation . What I don't know how to do is grab current view content and..

Convert GPS coordinates to coordinate plane

http://stackoverflow.com/questions/3588653/convert-gps-coordinates-to-coordinate-plane

GPS coordinates to coordinate plane This is somewhat related to another question I asked Translate GPS coordinates to location on PDF Map . That got me to..

How to get the Y component from CMSampleBuffer resulted from the AVCaptureSession?

http://stackoverflow.com/questions/4085474/how-to-get-the-y-component-from-cmsamplebuffer-resulted-from-the-avcapturesessio

YUV 4 2 0 planar colorspace except on the iPhone 3G where it's YUV 4 2 2 interleaved . This means that there are two planes of image data contained within the video frame with the Y plane coming first. For every pixel in your resulting image there.. YUV 4 2 2 interleaved . This means that there are two planes of image data contained within the video frame with the Y plane coming first. For every pixel in your resulting image there is one byte for the Y value at that pixel. You would get at..

Skybox OpenGL ES iPhone and iPad

http://stackoverflow.com/questions/4110893/skybox-opengl-es-iphone-and-ipad

according to member variables and to ensure that the cube geometry I defined doesn't visibly intersect the near clip plane how to specify vertex locations and texture coordinates to OpenGL how to specify the triangles OpenGL should construct between..

Compensating compass lag with the gyroscope on iPhone 4

http://stackoverflow.com/questions/4212988/compensating-compass-lag-with-the-gyroscope-on-iphone-4

the value for several interval. In my case every 5 second. I've experiment with gyro for calculating angle between two plane i try with exacly 90 degree ruler and it will give an error about 0.5 degree every second try and keep increasing but thats..

Getting displacement from accelerometer data with Core Motion

http://stackoverflow.com/questions/4449565/getting-displacement-from-accelerometer-data-with-core-motion

whatsoever and I don't think that is really necessary. Also there is the problem that when the iPhone is still on a plane accelerometer values are not null there is some noise I think . How much should I filter those values Am I supposed to filter..

Create a for loop to add 39 buttons to an array

http://stackoverflow.com/questions/5656432/create-a-for-loop-to-add-39-buttons-to-an-array

The term “Context” in programming?

http://stackoverflow.com/questions/6145091/the-term-context-in-programming

the ATM . Either way it's information that usually helps to get stuff done. Now let's say you take your 100 and buy a plane ticket to fly somewhere warm while your mouth heals. You arrive at a nice sunny destination but your bag doesn't make it...

Create custom keyboard and configure it on your iPhone

http://stackoverflow.com/questions/7189287/create-custom-keyboard-and-configure-it-on-your-iphone

that Apple embedded in the iPhone fonts are not approved by the Unicode Standard. They are located in the private plane of Unicode their codepoint is in a range that is especially reserved for private uses like the one Apple does by using it..