"Radians and degrees are two different units of the measurement angle. Just like "meters" and "city ruler" are two different units that measure the length.In flash, the angle in rotation is measured in degrees, and the angle in trigonometric

Function
Before we learn trigonometric functions, we first understand a concept-- radians .
In daily life we use the metric angle of the unit is the degree. A circumference is 360 degrees, but this number is arbitrary. The Radian units are the

Starting from this chapter, we will learn about triangle learning and apply it to animation technology in chapter 5.It will be exposed during the graphic technique. If you already know about triangle learning or want to learn about animation, you

Java report tool FineReport common functions usage Summary (mathematical and trigonometric functions), javafinereport
ABS
ABS (number): returns the absolute value of a specified number. Absolute Value refers to a value without positive or negative

In the past two days, I have read the quad-tree code written by my colleagues, and used the conversion between the degree of loneliness and angle. So I reprinted this article and learned it.
01 radian relationship with angle 1. Two angle

AbsABS (number): Returns the absolute value of the specified digit. An absolute value is a numeric value that has no sign.Number: Any real number that requires an absolute value.Example:ABS (-1.5) equals 1.5.ABS (0) equals 0.ABS (2.5) equals

Mathf.abs Absolute ValueCalculates and returns the absolute value of the specified parameter F.Mathf.acos Inverse cosinestatic function Acos (f:float): floatCalculates and returns the inverse cosine of the number specified in Parameter F, in radians.

Rotation formula of a plane point and a plane rotation formula
Definition: the rotation of a point O above a plane is to make any pair of corresponding points P and P on the plane equal to the line segments connected to a fixed point O, that is, |

0. Preface
Speaking of hillshade, it is actually a method that simulates the contrast between light and shade caused by sunlight shining on the terrain, and then renders the topographic map to make it look stereoscopic. It is often used for map

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