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Struct catransform3d { Cgfloat M11 (x scaling), M12 (Y shear), M13 (), m14 (); Cgfloat m21 (x shear), m22 (Y scaling), M23 (), M24 (); Cgfloat m31 (), M32 (), M33 (), m34 (perspective effect, the object to be operated must have a rotation angle, otherwise there is no effect. Of course, only the perspective effect can be obtained if there is a change in the z direction ); Cgfloat M41 (X translation), M42 (Y translation), m43 (Z translation), m44 (

Preface Keyword: digitalclock Date Format The digitalclock of Android does not set the attribute or method of the output format, but it can be implemented through inheritance and rewriting. For details, see the code in the body. Body I. Requirements Modify the time output format to show only hours and minutes. II, 　　　　 Iii. Description By looking at the source code, you only need to modify the following two lines of code and copy them all: Code highlighting produced by Actipro CodeHighlighte

indicate the RGB value of this color. Background-color: rgba (180,180,144, 0.6 ); Almost all other browsers except ie support the rgba function. It has four parameters, the first three are RGB values of a color, and the fourth is transparency, which is set to 0.6. 5. Rotation) . Box_rotate { -Moz-transform: Rotate (7.5deg);/* ff3.5 + */ -O-transform: Rotate (7.5deg);/* opera 10.5 */ -WebKit-transform: Rotate (7.5deg);/* saf3.1 +, chrome */ Filter: progid: DXImageTransform. Microsoft.

;Trackbar4.position: = 10;Button1.onclick: = formcreate;EndProcedure Tform1.formpaint (Sender:tobject);VarG:tgpgraphics;B:tgpbrush;P:tgppen;Matrix:tgpmatrix;M11, M12, M21, M22:single;BeginG: = Tgpgraphics.create (Canvas.handle);B: = Tgphatchbrush.create (Hatchstylelargegrid, Aclforestgreen);P: = tgppen.create (b, 16);M11: = TRACKBAR1.POSITION/10;M12: = TRACKBAR2.POSITION/10;M21: = TRACKBAR3.POSITION/10;M22:

-coordinate of the center point. Default value 0CenterY-distorts the Y-coordinate of the center point. Default value 0Anglex-x axis distortion angle, Y axis rotates (counterclockwise) around the origin. CenterX has no effect on the rendering results produced by this value. Default value 0Angley-y Axis twist angle, X axis rotates around origin (clockwise). CenterY has no effect on the rendering results produced by this value. Default value 0--> |　　　　　　 X| | M11 (default value 1) M21 (default

specify the appropriate permissions for it. Assigning permissions to a user makesUse command grant to reclaim permissions using the command revoke.In order to clarify the user's management, here I give you a case.Sql> Conn Xiaoming/m12;ERROR:Ora-01045:user Xiaoming lacks CREATE SESSION privilege; Logon deniedWarning: You are no longer connected to ORACLE.Sql> Show user;USER is ""Sql> Conn system/p;is connected.Sql> Grant connect to Xiaoming;Authoriza

DirectoryChapter 1th Introduction1.1 Document Description1.2 Reference documentsThe 2nd chapter the concept and principle of erasure code2.1 Concepts2.2 Principle3rd Chapter Introduction of CEPH Erasure code3.1 Ceph Erasure code use3.2 Ceph Erasure code Library3.3 Ceph Erasure code data storage3.3.1 Encoding block reading and writing3.3.2 interrupted full write3.4 Scope of Use3.4.1 Cold Data3.4.2 inexpensive multi-data center storage4th chapter of Ceph Erasure code example4.1 Data Read and write

and japanese), with only a few bits to represent the standard Latin charactersWe want to convert the binary code in the document to a character for display on the Screen. But because there are a lot of different alphabet, there are many different ways to encode characters into binary code (these methods have advantages and disadvantages), we need a standard method to describe and apply the binary code to the character of the decoding algorithmIt takes two steps to convert a binary code to a cha

and Japanese), with only a few bits to represent the standard Latin charactersWe want to convert the binary code in the document to a character for display on the screen. But because there are a lot of different alphabet, there are many different ways to encode characters into binary code (these methods have advantages and disadvantages), we need a standard method to describe and apply the binary code to the character of the decoding algorithmIt takes two steps to convert a binary code to a cha

uses the familiar way to explain. People familiar with DirectX will describe the matrix using row vectors, and people familiar with OpenGL will use column vectors to describe the matrix. The result is that there are two matrices that appear to transpose each other.For example, in DX, a vector is actually like this:[x,y,z,w]It does this when multiplying the matrix:[x,y,z,w] * M (the way to multiply the matrix right)For OpenGL, its vector representation is this:[X,YZWIt does this at the time of m

The meaning and relationship of nal, slice and frame in H.NAL Nal_unit_type 1 (encoding strip for non-IDR images), 2 (coded stripe data split block a), 3 (coded stripe data split block B), 4 (coded stripe data block C), 5 (encoded stripe of IDR image) typesAndThree coding modes for slice species: I_slice, P_slice, B_sliceThere are 3 types of frame: what is the ma

-frames, P-frames, B-frames, and so on, are actually the concept of the image that we have materialized and minutely. The "frame" we mentioned in H. S is usually the image of the non-divided field; (2), if do not adopt FMO (Flexible macro block sort) mechanism, then an image has only one slice group; (3), if you do not use more than one piece, then a slice group has only one slice; (4), if not using the DP (data segmentation) mechanism, then a piece is a Nalu, a nalu is a piece. Otherwise, a pie

PythonInitializationConstruction method CreationPython codeD = dict ()D = dict (name= "Nico", age=23)D = dict ([' Name ', "Nico"], [' Age ', 23])Of course there are more convenient, simplePython codeD = {}D = {"Name": "Nico", "Age": 23}TraverseThrough the traversal of the key, traversing the entire dictPython codeD = {"Name": "Nico", "Age": 23}For key in D:Print

results of list (D.keys ()) must be saved and sort () on the result.4 Common functions4.1 Get ()D.get (k[, d]) = D[k] If k in D else D defaults to none.4.2 Pop ()D.pop (value[, d]) = Remove specified key and return the corresponding value. If key is not found, and D is returned if given, otherwise keyerror is raised.4.3 udpate ()D.update (E, **f), None. Update D from Dict/iterable E and F.If E has A. Keys () method, Does:for k in e:d[k] = E[k]If E lacks. Keys () method, Does:for (K, v) in e:d[k

characters in the same code as the program, and does not encode conversions, so it uses a narrowCharacters require the code in the program and the operating environment code consistent, so that will not appear garbled. Due to Simplified ChineseVC version of the program code is GB18030, so the use of narrow-character VC program can only run in GB18030 environment。 Similarly, because GCC uses UTF-8 as the default for code, GCC programs that use narrow characters can onlyRun in the UTF-8 terminal

MySQL partition Table partition online modify partition field company online use partition, there is a table partition field error, need to be rebuilt, it turns out that there is no way to directly execute an SQL statement like modifying the primary key field or modifying the index field. Instead, you need to create a temporary table with a down time. So I carefully read the document and studied the details of partition. When your company is online, the business is off-peak at. Execute: CREATE t

canvas Origin x horizontal, Origin y vertically in the grid void ctx.transform(m11, m12, m21, m22, dx, dy); Use the matrix described by the method parameter to overlay the current transformation matrix multiple times. m11Horizontal Scaling m12Tilt in horizontal direction m21Tilt in the vertical direction m22Vertical orientation of scaling dxHorizontal direction of movement dyMove in a vertical d

scaling: b:b* Zoom multiplier d:d* Zoom multiplier f:f* zoom factor (f/d default is 0);Oblique cutc also means x-axis chamfered C=math.tan (DEG/180*MATH*PI)b also means y-axis oblique cut B=math.tan (DEG/180*MATH*PI)DisplacementThe length of the displacement displacement of the e:x axis is e+x; (e,f default value is 0)The length of displacement displacement of f:y axis is f+y;RotatingA/B/C/D co-control rotationA = Math.Cos (DEG/180*MATH*PI)b = Math.sin (DEG/180*MATH*PI)c =-math.sin (DEG/180*MAT

multiplier (e/c default is 0); B,d,f represents the y-axis scaling Y-axis scaling: b:b* Zoom multiplier d:d* Zoom multiplier f:f* zoom factor (f/d default is 0);chamfered C also indicates that x-axis oblique cut C=math.tan (DEG/180*MATH*PI) b also represents the y-axis chamfered B=math.tan (DEG/180*MATH*PI) The displacement displacement of the displacement e:x axis is e+x; (e,f default value is 0) the length of the displacement displacement of the f:y axis is f+y;Rotary A/B/C/D co-control rotat

an axial manner ); 6. Convert to 180 ° CGAffineTransformMake (-, 0,-, 0 ); 7. In the example 5.3, the CGAffineTransformMake (,-,) is hashed to the right. Code: @interface ViewController ()@property (nonatomic, weak) IBOutlet UIView *layerView;@end@implementation ViewControllerCGAffineTransform CGAffineTransformMakeShear(CGFloat x, CGFloat y){ CGAffineTransform transform = CGAffineTransformIdentity; transform.c = -x; transform.b = y; return transform;}- (void)viewDidLoad{ [super