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Flash basic Theory Class chapter III Application of Trigonometry

Back to "flash Basic Theory Class-Catalog" Starting with this chapter, we will learn trigonometry and apply it to the animation technology in the fifth chapter, actually in the next chapter of the drawing technology will be contacted. If you already have a knowledge of trigonometry or are eager to learn about animation, you can skip the start section and then come back to learn when you don't know what to

Canvas Learning notes-trigonometry in animation

, canvas.height); A the varDX = mouse.x-arrow.x, +DY = mouse.y-Arrow.y, -Rotate =math.atan2 (dy, dx); $ $Arrow.rotate =rotate; - - Arrow.draw (context); the})();View CodeExample 2, Smoothing motion:Key codeYPos = centery + math.sin (angle) *+ = 0.1;Example 3, Pulse motion:Note that you do not need to clear the canvas here, and you should use Beginpath () when you start drawingExample 4, circular motion:The main point of the circular motion is to use sine to calculate the x-coordinate, cos

Java Reporting Tools Finereport usage Summary of common functions (math and trigonometry)

integer number to a hexadecimal-represented string.int: Represents a decimal integer that needs to be converted.Example:Tohex (15) equals "F".Tohex (20) equals "14".TooctalTooctal (int): Converts a decimal integer to a string in octal notation.int: Represents a decimal integer that needs to be converted.Example:Tooctal (10) equals "12".Tooctal (20) equals "24".TRUNCTRUNC (number,num_digits): Rounding. The fractional part of the number is truncated to return an integer.Number: You need to trunca

Silverlight & Blend Animation Design Series 12:3 angular function (trigonometry) Animation free rotation (free-form rotation)

/MATH.PI;}private void Handle_mousemove (object sender, MouseEventArgs e){MousePosition = E.getposition (null);if (ismousecaptured){Lastangle = Math.atan2 (Lastposition.y-canvascenter.y, lastposition.x-canvascenter.x);Currentangle = Math.atan2 (Mouseposition.y-canvascenter.y, mouseposition.x-canvascenter.x);Angledelta = Currentangle-lastangle;Rotateitemcanvas.angle + = Radianstodegrees (Angledelta);Lastposition = mouseposition;}}rotatable UserControl complete codeIt is also very simple to use, d

Silverlight & Blend Animation Design Series 13:3 angular function (trigonometry) animation falling Snowflakes (falling snow)

Collection--Initialize 250 snowflake objects and animate with colleaguesFlake = new listSnowflake Coordinate CollectionXystart = new listOpacity CollectionOpacityvalue = new listfor (int i = 0; i {Different starting and ending coordinatesPoint newpoint = new Point (Rand.next ((int) layoutroot.width), Rand.next ((int) layoutroot.height));Xystart.add (Newpoint);Different transparency valuesOpacityvalue.add (Rand.nextdouble ());}Initflakes ();snowfall.completed + = new EventHandler (snowfall_compl

Book Counting machine, book Barcode Data Collector, efficient warehouse Management book barcode Solution

Book inventory plays an important key business data for warehouse management operations in books. Development at any age now promotes blood circulation in books, book types and update speed are just as fast rising.In order to ensure a foothold in the book industry, to ensure the correct purchase and inventory control and delivery. In order to avoid the backlog of

IOS Address Book programming, listening for system address book changes, and ios address book

IOS Address Book programming, listening for system address book changes, and ios address book Listen for address book changes The client code must be implemented as follows: /* Remove the registration function */-(void) dealloc {ABAddressBookUnregisterExternalChangeCallback (_ addressBook, ContactsChangeCallback, nil)

Gitbook set up local book and import others book

Gitbook set up local book 1, do not login, click Do this later2, click New book–> Enter book name –>confirm3, the path of the book4. Book Display5, Release6, import others book error and introduction7, related documents ———————————————————————- 1, do not login, click Do thi

Baidu Map Road Book delete annotations, get playback progress method, to achieve road book playback function

First put a picture, this is the end of the road book display effect 1, demand--2, solutions--3, implementation Method--4, subsequent expansion 1. Demand Demand is probably like, to achieve the progress of the book play, you can forward back, pause, when the mouse hover trolley display location information (callout) Subsequent (playback speed modification) 2, solve the idea The original idea: I threw a bu

Finally, I also want a C # book-My writing process and C # book recommendation

My previous question stopped for a long time because-I went to write a book.ObjectiveI started working in March 2012 and now I'm six years away. For the past six years, I have never known anything about SQL Server, only the simplest C # programmers have started, stepping back from a nameless outsourcing company to the middle of a larger financial institution, with wages rising to nearly four times times the size of a new job. In the process of struggle, I also go a lot of detours, once very depr

Use book folding in Word 2007 to print book layout

When you use Word2007 to edit and format Word documents, you sometimes need to print a Word document, such as a job seeker's resume, a personal collection of documents, into a booklet in a book format. Using Word2007 to provide "book folding" features, it is easy for users to achieve this (this tutorial is also applicable in Word2003), the following steps are described: Step 1th, open the Word2007 document

Go to book review: To talk about the algorithm book of GIS

The http://blog.3snews.net/space.php?uid=16796do=blogid=22870 of Jiang waves1984 Turing Award winner, the inventor of the Pascal language, Professor Niklaus Wirth, has given the program a classic definition of "program = algorithm + data structure", sharply. In my opinion, the algorithm and the data structure are like the methodology and epistemology in philosophy, the former clarifies the idea of solving a problem, and the latter provides the object of solving the problem.The term "algorithm" d

How to use micro-mail phone book? Micro-letter Phone Book use tutorial

1, the installation of micro-letter phone book, open micro-letter phone book, due to the first use, need to bind mobile phone number. (Enter the verification code) 2, then entered the Dial-up interface, where you can call can also add contacts, dial the T9 button, with Search contact function: 3, we will find that the call record was placed on a separate page, the use of QQ address

Sina Weibo how to add the Address Book Buddy Weibo add address Book Buddy method

Add Address Book Buddy criteria The relatively simple condition is that we can let micro-blog access to their mobile phone records of the right to. Micro Blog add Address Book Buddy method 1. Open the phone side Sina Weibo, click "My"-"Add friends" open access, the effect is as follows 2. Then there is a sweeping sweep, and "Address Book Friends" We click o

What to read-book pick, condensed knowledge, such as shadow accompanying _ book pick

Many people respond, buy Books Online, if you can turn to look at, even if it is a few pages of the good. Because they are afraid to buy back, not what they need. Of course, you can also go to the book review, but the review is just someone else's subjective judgment. Is there anything that can objectively reflect the quality of the content of the book in the end what kind of product? Read what

Python crawler Bean-book Express-book Analysis

1-Problem descriptionGrab the watercress "new Book Express"[1] page book information (including title, author, profile, url) and redirect the results to a txt text file. 2-Thinking analysis [2]STEP1 reading HTMLSTEP2 XPath traversal elements and attributes 3-Using toolsPython,lxml module, requests module 4-Program Implementation1 #-*-coding:utf-8-*-2 fromlxmlImportHTML3 ImportRequests4 5

Print book--word 2007 book Typesetting complete manual 10

Print book--word 2007 book Typesetting Complete Manual (10) After the above series of operations, the editing and typesetting of books has been basically completed, now it is necessary to print the book. Word 2007 printing is very powerful, you can preview the printing effect before printing, you can print double-sided, you can specify the print range, you can s

Python book search and book cover download __python

I usually like reading, so I made a catalogue of books, and recorded the list of books I read:This is a XSLX file. The following code, query each of the above books, and download the book cover. What needs to be stated are:1. Query the platform of the book is a watercress reading2. The Chinese name of the book is embedded directly in the request link, because it

"My book" Unity Shader's book-Catalogue (2016.1.29 Update)

Write in frontThanks to all the friends who came in to see. Yes, I'm currently going to write a book about unity shader.The purpose of the book is to have the following several: Summarize my experience with unity Shader and give others a reference. I am very aware of the difficulties of learning shader, and I have seen many questions raised by people in the group. I think learning shader is still a

Flash basic Theory Class chapter III Application of Trigonometry

Back to "flash Basic Theory Class-Catalog" Linear vertical Motion In the wave1.as file, a linear vertical motion is added, just to add some inspiration to our animation. The following is the code for this file: package {  import

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