![core animator ipad core animator ipad](https://venturebeat.com/wp-content/uploads/2019/11/aero.jpg)
Performance-wise, the M2-powered MacBook Air seems to sit between the M1 and M1 Pro-powered MacBooks, offering 18% faster CPU performance and 35% better GPU performance over the M1-powered MacBook, but when it comes to efficiency, Apple claims to provide 30% better battery life, with 18-hours of backup. The transformations evolve over the duration of the animation and follow the specified animation curve in terms of timing.The combination of power and efficiency is golden for everyone, and that’s exactly what the new MacBook Air is trying to nail. The key point to keep in mind with transformations is that they become animated effects when performed within an animation block. The following code, for example, rotates a view by 90 degrees: ansform = CGAffineTransformMakeRotation( 90 * M_PI / 180) Similarly, the UIView object may be rotated using the CGAffineTransformMakeRotation which takes as an argument the angle (in radians) by which the view is to be rotated. A call is made to one of a number transformation functions and the result assigned to the transform property of the UIView object.įor example, to change the scale of a UIView object named myView by a factor of 2 in both height and width: ansform = CGAffineTransformMakeScale(2, 2) This essentially allows the programmer to rotate, resize and translate a UIView object. Transformations allow changes to be made to the coordinate system of a screen area.
CORE ANIMATOR IPAD CODE
For example, the duration of the animation (in our hypothetical example this needs to be 3 seconds) can be declared by a call to the setAnimationDuration class method: īringing this all together gives us a code sequence to gradually fade out a button object over a period of 3 seconds: The end of the animation block triggers the animation sequence through a call to the commitAnimations method: Ī variety of properties may also be defined within the animation block.
![core animator ipad core animator ipad](https://cdn.iphoneincanada.ca/wp-content/uploads/2014/10/introducing-pixelmator-for-ipad1.jpg)
The start of an animation block is represented by a call to the beginAnimations class method of the UIView class: In order to make it fade out of sight gradually we need to place this line of code in an animation block. Simply setting the alpha property to 0, however, causes the button to immediately become transparent. This can be achieved by making the button transparent through the use of the alpha property: theButton.alpha = 0 The application requires that the button gradually fade from view over a period of 3 seconds. For the sake of example, consider a UIView object that contains a UIButton connected to an outlet named theButton. Once the end of the block is reached the animation is committed and the changes are performed over a specified duration. Animation blocks are used to mark the beginning and end of a sequence of changes to the appearance of a UIView and its corresponding subviews. The concept of Core Animation involves the implementation of so-called animation blocks. That said core animation still provides a surprising amount of functionality for very little effort on the part of the iPad application programmer. While much can be achieved with Core Animation, however, it should be noted that if you plan to develop a graphics intensive 3D style application then it is more likely that OpenGL ES will need to be used. The next chapter, entitled An iOS 4 iPad Core Animation Tutorial, will work through a simple example that animates the rotation, resizing and motion of an object on the iPad screen. In this chapter we will provide an overview of the basics of Core Animation. If you need a user interface element to gently fade in or out of view, slide smoothly across the screen or gracefully resize or rotate before the user’s eyes these effects can be achieved using Core Animation in just a few lines of code. Core Animation provides a simple mechanism for implementing basic animation within an iPad application. The majority of the visual effects used throughout the iOS 4 user interface on the iPad and iPhone are performed using Core Animation. SwiftUI Essentials – iOS 15 Edition book is now available in Print ($39.99) and eBook ($29.99) editions. Learn SwiftUI and take your iOS Development to the Next Level