2014/10/15 下午 10:14:14

iphone Programming Glossary: skew

http://stackoverflow.com/questions/10477195/cropping-uiimage-like-camscanner

matrix that did the stretching. I've never learned how to construct transformation matrixes that stretch or skew images so I can't be of any help. I'd suggest googling transformation matrixes and stretching skewing. The other way would.. that stretch or skew images so I can't be of any help. I'd suggest googling transformation matrixes and stretching skewing. The other way would be to turn the part of the image you are cropping into an OpenGL texture and map the texture onto..

Objective C Find closest color (rgb) match

http://stackoverflow.com/questions/1767941/objective-c-find-closest-color-rgb-match

space than RGB because you can give more weight to hue difference and less to lightness . In RGB space you need to skew your differences because the eye is better at discerning shades of green than other colours. share improve this answer..

iphone sdk CGAffineTransform getting the angle of rotation of an object

http://stackoverflow.com/questions/2051811/iphone-sdk-cgaffinetransform-getting-the-angle-of-rotation-of-an-object

iphone sdk rotation share improve this question Technically you can't because the transform can include a skew operation which turns the image into a parallelogram and the rotation angle isn't defined anymore. Anyway since the rotation..

iPhone image stretching (skew)

http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew

image stretching skew How do I skew an image For example each corner has a CGPoint with coords p1 p2 p3 p4. Then I need to set p4.x 50 p4.y 30... image stretching skew How do I skew an image For example each corner has a CGPoint with coords p1 p2 p3 p4. Then I need to set p4.x 50 p4.y 30. So this corner..

Syncing objects between two disparate systems, best approach?

http://stackoverflow.com/questions/636675/syncing-objects-between-two-disparate-systems-best-approach

when syncing transfer all records where updated_at @last_sync_at . Down side this approach doesn't tolerate clock skew very well at all. It is probably safer to keep a version number column that is incremented each time a row is updated so.. all. It is probably safer to keep a version number column that is incremented each time a row is updated so that clock skew doesn't foul your sync process and a last synced version number so that potentially conflicting changes can be identified..