Used for
APP Store
Ad Hoc
57x57
Icon.png
Home screen on Iphone/ipod Touch (IOS 6.1 and earlier)
Required
Required
114x114
[Email protected]
Home screen on Iphone/ipod Touch with Retina display (IOS 6.1 and earlier)
Optional but recommended
Optional but recommended
72x72
Icon-72.png
Home screen on IPad (IOS 6.1 and earlier)
Required
Required
144x144
[Email prote
1. Application icons
Before ios3.2
You cannot specify icons in the info. plist file. You must follow the apple icon naming rules as follows:
Icon.png 57x57 iPhone app icon
Icon@2x.png 114x114 iPhone (Retina Display) Application icons
Icon-72.png 72X72 iPad app icons
Icon-72@2x.png 144x144 iPad (Retina Display) Application icons
Icon-Small.png 29x29 iPhone system settings and search results icons
Icon-Small@2x.png 58x58 iPhone (Retina Display) system settings and search results ic
protected override void onpaint (painteventargs paintevnt) { graphics GFX = paintevnt. graphics; // build a paint brush pen mypen = new pen (color. black); // draw line for (INT I = 20; I {}
Draw a square vertical:
Protected override void onpaint (painteventargs paintevnt){// Get the graphics objectGraphics GFX = paintevnt. graphics;// Create a new pen that we shall use for drawing the linePen mypen = new pen (color. Black );// Loop and create a horizontal line 10 pixels below the last o
VaR M = (ARGs. length> 1 )? Int . Parse (ARGs [1 ]): N; 9 Console. writeline ( " B ({0}, {1}) = {2: N0} " , N, m, B (n, m )); 10 } 11 12 Static Long B ( Int N, Int M) 13 { 14 If (N> m) Swap ( Ref N, Ref M ); 15 VaR B = New Long [N + 1 , M + 1 ]; 16 For (VaR M = 1 ; M 1 , M] = m- 2 ; 17 For ( VaR N = 2 ; N ) 18 For ( VaR M = N; m ) 19 B [n, m] = B [n- 1 , M- 1 ] + B [n- 1 , M]; 20 Return B [n, m]; 21 } 22
a window using predefined rules without setting the size and position for each widget separately. In this examplewxBoxSizerThe widget is arranged in a straight line. A box sizer can be vertical or horizontal. After creating a sizer, useSetSizer()Method to attach it to the framework. Then create a button. The parameters of the button constructor include:
Parent widget (frame in this example)
An integer ID
Tag to be displayed
You do not need to explicitly add the button to the Framework. You
width or height parameter,//aspect ratio is maintained$image->thumbnailimage (100, 0);Echo $image;?>
Animated image of a thumbnail gif
The code is as follows
Copy Code
/* Create A new Imagick object and read in GIF */$im = new Imagick ("Example.gif");/* Resize All frames */foreach ($im as $frame) {/* 50x50 Frames */$frame->thumbnailimage (50, 50);/* Set the virtual canvas to correct size */$frame->setimagep
1. The text on the UI is no less than 24 # the button is no less than 50X50
2. The Dynamically Loaded swf file cannot obtain the class definition and code. Even a stop file cannot be loaded.
3. Do not rely on mc for animation implementation.
4. High cpu or memory may crash
5. MovieClip is rarely used. The performance of MovieClip on mobile phones is poor. sprite sheets technology is used.
6. * It is recommended that the as file be less than 1000 lines
strokeRect function outlines a 50x50 rectangle border in the cleared space. On the next page, we will see two other methods similar to the clearRect function, and how to change the filling and border color of the image.Attachment: Canvas_rect.pngUnlike the path functions in the next section, the effects of these three functions are immediately reflected on the canvas.
Draw path
Unlike drawing a rectangle, creating a path requires some additional step
createScaleBitmap (src, reqWidth, reqHeight, options. inSampleSize );}}
V. Test
Create an imageview of 100x100dp in the layout, and then put an image in res.
5.1 layout File
Put two buttons. One button starts to load bitmap Using the conventional method without compression, and the other starts the compression algorithm.
View Code
5.2 java code
Public void butonListener (View v) {switch (v. getId () {case R. id. original_button: loadBitmap (false); // load the source image break; case R. id.
to draw the rectangle:
Fillrect (X, Y, width, height): draws a filled rectanglestrokerect (X, Y, width, height): draws a rectangular outlineclearrect (X, Y, width, height ): clears the specified area and makes it fully transparent
They all accept four parameters,XAndY specifies the position (relative to the origin) in the upper left corner of the rectangle,WidthAndHeightIs the width and height of the rectangle. Okay, let's take a look. Example of creating a rectangle
Function draw () {var c
increases by 1000. Now you can calculate 10000x10000 = 100000000. Obviously the fastest line division or range won't help you. At this point, you have to think about collision from different perspectives and use space division.
We will discuss special segmentation. When we talk about BSP trees and octrees, I upgraded the data structure, which is not only useful for graphics, but best for collision. You can see why. Using these data structures, we can separate our objects into units or areas and
further compress a bit more perfectly.
Note: Both coalesceimages and optimizeImageLayers return New Imagick objects!
If you are more comfortable with shell operations, you can implement GIF animation thumbnails as follows:
Copy codeThe Code is as follows: shell> convert old.gif-coalesce-thumbnail 50x50-layers optimize new.gif
The generated new.gif is as follows:
New.gif
The convert version is smaller than the php version, which is caused by incon
This article mainly introduces nodejs to traverse folders and measure the file size. The following uses nodejs to traverse folder files and read all files, and output the data in ascending to smallest order. If you need a friend, you can refer to the fact that you have been away from the company for more than two months. You have written many tools before, but on the day I left the company, I personally formatted all the accumulated tools and code over the past year. Today I think of a problem I
Graduation design to do image segmentation and recognition of something.Look at the paper and see Superpixels start the brain complement is the pixel interpolation calculatedThen the more I look at it, the more I find it, the other thing.http://blog.sina.com.cn/s/blog_50363a7901011dtd.htmlhave definedMany existing algorithms in computer vision use the Pixel-grid as the underlying representation. For example, stochastic models of images, such as Markov the random fields, is often defined on the t
transmission speed of the circuit signal. Other electrical performance indicators are dielectric loss angle tangent, electrical strength, insulation strength, arc strength and so on.3.3. PCB dimensions and process design requirements.In PCB design, the first thing to consider the PCB dimensions. PCB size too large impedance will increase, anti-noise capacity is reduced, the form size is too small, the heat dissipation is not good, and adjacent lines susceptible to interference, and PCB dimensio
(img. size [1] for img in imagesToArrange))Radius = diameter/2CircleCenterX = imgWidth/2CircleCenterY = imgHeight/2Theta = 2 * math. pi/len (imagesToArrange)For I in range (len (imagesToArrange )):CurImg = imagesToArrange [I]Angle = I * thetaDx = int (radius * math. cos (angle ))Dy = int (radius * math. sin (angle ))# Dx and dy give the coordinates of where the center of our images wocould go.# So we must subtract half the height/width of the image to find where their top-left corners shoshould
.I am using QQ function to measure, QQ will give the current size of the interception of graphics, it is 25x25 (when the circle is biased).Finally, let's look at an example of a window and a viewport set together.void Lang::p aintevent (qpaintevent *){qpainter painter (this); qDebug()This sets the window coordinates ( -50,-50) map to the origin of the viewport, Mapping the window 100x100 unit length to the 100x100 pixel size of the viewportThe window's logical coordinate -50,-50 is the coord
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