The specific steps are as follows:
1. Draw a Circle
Open the geometry artboard. Click the side bar Circle tool to draw a circle O, and then use the DOT tool to find a point on the circle, as shown in the following figure.
Draw a circle O with the Circle tool and take a point a
2. Make the Tangent
Click the sidebar "Custom Tool"--the Circle tool--makes a circle tangent outside the circle.
Code
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->Vector3 Math: calculateTangentSpaceVector (
Const Vector3 position1, const Vector3 position2, const Vector3 position3,
Real u1, Real v1, Real u2, Real v2, Real u3, Real v3)
{
// Side0 is the vector along one side of the triangle of vertices passed in,
// And side1 is the vector along another side. Taking the cross product of these returns the normal.
Vector3 side0 = position1-position2;
Vec
Recently wrote the project has used a lot of facets, the knowledge of tangent points, after writing, from my summary:As an example:In a Class (show) There is a method of performing (display), before the performance, there should be a speech (say) method, after the performance, there should be applause (hand) method.For high cohesion and low coupling, the performance method should be encapsulated separately within a class, the methods of speech and app
NN, demand or not down, the whole day more, the whole of a loading box, it seems that I am the loading box is the sentiment has a single clock, good, not many BB, first: Well, it is such a thing, compared to the first two, there is a bit of technical content, but in fact, it is not difficult, the reason is to do more than a day, because it is also special to tread a pit, pit me an afternoon of time, hurt, as to what is the pit, the following again;Well, to complete this before the necessary kno
Arc tangent function application
Time limit:1000 ms
Memory limit:10000 K
Total submissions:14468
Accepted:5227
Description The arc tangent function can be expanded into an infinite series, with the following formula(0 Using the arc tangent function to calculate pi is a common method. For example,
A, tan function syntax
function function: Returns the tangent value of the given angle.
Grammar
TAN (number)
Parameter introduction
Number is the angle of the tangent, expressed in radians.
Note: If the unit of the parameter is degrees, you can multiply it by PI ()/180 or use the RADIANS function to convert it to radians.
Examples of tan functions
When ①number is the angle
If the number is 45 o'clo
This method returns the tangent value of a number. The Tan method returns the tangent of the indicated angle.Grammar
Math.tan (x);
The following are the details of the parameters:
X: A number that represents radians in degrees
return value:
Returns the tangent value of a number
Example:
This will produce the fo
modify many different files again. This measure is difficult to maintain, extend, and extend because it is scattered throughout the code base. This is only a small example. In many cases, OOP may not always be the best way to add metrics to a class.
aspect-oriented programming provides a way to encapsulate this type of behavioral functionality. It allows you to add behaviors, such as measuring "around" your code. For example, AOP gives you programmatic control to specify that you want to call B
Give a vertex, and then give some circles under this vertex, and find the Union of shadows obtained after this vertex is taken to these circles.
Idea: Find the tangent of each circle about that point. Each circle can process two tangent lines. The middle part of the two tangent points on the X axis is the required shadow. Finally, retrieve and output all the
Solving the tangent vectors of intersection lines determined by two surfaces
@ (Calculus)
There is a very instructive argument: Consider the implicit function F (x, Y, Z) =0 that describes a surface. F (x, Y, z) =0.Its full differential df=f′xdx+f′ydy+f′zdz=0 df=f ' _xdx+f ' _ydy+f ' _zdz=0, i.e.
(f′x,f′y,f′z) (Dx,dy,dz) =0 (F ' _x,f ' _y,f ' _z) (Dx,dy,dz) = 0
Where (Dx,dy,dz) (DX,DY,DZ) is the tangent
Android5.0 Material Design Animation effect rippledrawable Ripple effect
The ripple effect is a new feature after Android5.0. For compatibility, it is recommended that you create a new DRAWABLE-V21 folder to hold the Rippledrawable,drawable folder to fit the appropriate picture. (Here you can install a androidselector plug-in, the specific can refer to the third part of 53102615)
Computer water ripple problems often occur when using a flat panel monitor. Liquid crystal display of the so-called water ripple problem, refers to the screen of dark wave interference in a form, to the user feel like a ripple on the water. Some friends said that even if the LCD has just bought water ripple phenomenon,
JS for tangent-oriented programming (AOP)
Aspect-oriented programming (AOP) is also somewhat interesting, and can add new functionality without modifying the original code. There are some JS frameworks that implement AOP functionality, but sometimes we don't rely on the framework to write programs (the framework can be cumbersome), and we need to implement some of our own functional modules. Here is my own implementation of JS AOP, the implem
Related articles: Flash practical Programming Five---The Making of rain animation
In some wonderful flash movies can often see the effect of drizzle, give a warm and romantic feeling. This example makes rain drops falling from the night sky, splashing and rippling effects.The final effect of the night rain as shown in Figure 1:
Click here to download the source file learning
1, first start flash, set the movie stage size is 450 pixel x280 pixels, the film background
This article mainly introduces Math for processing tangent in JavaScript. the tan () method is the basic knowledge in JS beginners. If you need it, you can refer to this method to return the tangent of a number. The tan method returns the tangent of the angle.
Syntax
Math.tan( x ) ;
The following is the detailed information about the parameters:
X: A numbe
SOURCEANALYSIS-50-SPRING-ASPECTJ The purpose of this article is also relatively straightforward, today suddenly found that colleagues asked the pointcut expression found himself or not too familiar with the AspectJ tangent expression, only know the simplest execution expression, so to organize a The use of the following pointcut expressions is an inserted article.
First, for a tangent pointcut, it is divid
AOP-supported bean () indicatorUse Bean ID or name as a parameter to limit, match only specific bean05, non-processing parameters of the tangent planeturn on automatic proxy @configuration@enableaspectjautoproxy----> start automatic proxy @componentscan Public class concertconfig{ @Bean public audience audience () {----> facets Returnnew audience ();} }a connection point Package Concert; Public Interface performance{ publicvo
This article mainly introduces the Math.tan () method used in JavaScript for dealing with tangent, which is the basic knowledge in the learning of JS, and the friends who need it can refer to
This method returns the tangent value of a number. The Tan method returns the tangent of the indicated angle.
Grammar
?
1
Math.tan (x);
The fol
The syntax of a atan function
function function: Returns the inverse tangent value.
The tangent value is equal to the number parameter value because it is an angle. The returned angle value is expressed in radians, and the range is-PI/2 to PI/2.
Grammar
Atan (number)
The tangent value of the number angle.
Note: To use degrees to represent an inverse
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