This is a reflection of the refraction of light and reflection of the law of Flash animation, the effect is mainly achieved by programming, we can first look at the effect:
Click here to download the source file
As you can see, the entire
This article introduces all the functions of the LUA Math Library, this article lists all the functions of the LUA Math library, and gives a brief description of the functional function of each function, and the friends you need can refer to the
To select data from two or more tables, we typically use table joins to implement this functionality.
This section describes the concept of join (join). For this we prepared two test tables: album (album table) and track (track table).
The series of the previous two articles have almost all the ideas of SEO covered, as the beginning said, SEO is nothing but to search engine friendly, or to search engine user-friendly, there is no more. The next step will be to continue to mention
This method returns the inverse chord of the radian number. The Asin method returns the numeric value between 1 and 1, X-PI/2, and PI/2 radians. Returns Nan if the value of the number is outside this range.
If we want to use a mathematical function, such as the inverse of the string function asin (x), if the value of the variable x is provided by the user or an intermediate result, then the call must be judged to be a reasonable range of values,
Flash Animation | tutorials
Think of the original animation, really do not know how to start, so this is a beginner's tutorial for the production of simple pendulum animation, should be resolved two aspects of the problem:
One, the simple pendulum
Use PowerPoint to make courseware, because it is easy to learn and easy to make easy to become the teacher's preferred tool. What we're going to talk about today is a demonstration of the sine wave in PowerPoint.
The image of sinusoidal function is
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