vintage vector

Vectors are the standard tool for 2D and 3D Mathematical research, and in 3D games vectors are the basis. Therefore, it is very important to master some basic concepts and properties of vectors and common operation methods. In this blog, horse and everyone to review and learn about the Unity3d in the common 3D mathematics knowledge.I. Vector concepts and basic definitions 1, mathematical definitions of vectors A

Part 1th Vector IntroductionVectors are vector queues, which are classes added by the JDK1.0 version. Inherits from Abstractlist, implements the list, randomaccess, cloneable these interfaces.Vector inherits the Abstractlist and realizes the list; therefore, it is a queue, supporting the relevant add, delete, modify, traverse and other functions.Vector implements the Randmoaccess interface, which provides a

For the first time, I said a little bit. The basic content of vector knowledge and a bit of usage skills, the simple display of its role in game programming. This time, take full advantage of the nature of the vector to imitate a physical phenomenon. First, I would like to introduce the two basic but very important techniques that will be used.One, the vector b o

this time we go on to look at the Java data structure vectors (vector) Stack (stack). The first is the vector, vectors (vector) classes are very similar to the traditional array, but the size of the vector can be changed dynamically according to the need. As arrays, the elements of a

This article on the introduction of STL vector usage is very detailed, please see below Introduced The purpose of this article is to introduce std::vector, how to properly use their member functions, and so on. The use of conditional functions and function pointers in iterative algorithms, such as in Remove_if () and For_each (), is also discussed in this paper. By reading this article readers should be a

Starting with 5.0 (API level 21), Android is starting to support vector graphics. What is the vector map and the vector map has any advantages and disadvantages is not covered in this article, the specific reference vector map encyclopedia. But here's the advantage: Holds the least information, the file size is smalle

concept will be elaborated. The main purpose of the blog is to make notes for themselves to remind.All right, it's officially started.Vector, Chinese is the "vector", how difficult to understand the name, vectors is clearly the concept of geometry, okay? Before the vector or foggy, listen to the students bragging about using vectors to do the storage, really worship a, in fact, this thing is an array of pl

Vector Common Methods assign () assigning values to elements in vectors void assign (Input_iterator start, Input_iterator end); //void assign (Size_type num, const type VAL); Reserve () sets the vector smallest element to hold the quantity function to reserve a space for at least a size element for the current vector. (The actual space may be greater than size) R

Document directory 1. carray 2.: STD: vector 3.: type definition in STD: vector 4.: STD: vector 5. Access elements in the vector 6.: STD: vector 7. add elements to the vector 8. Delete Elements 9. Access elements

The vector is part of the C + + Standard Template Library (Stl,standard Template). It is considered a container because it can hold various types of objects like a container, simply: A vector is a dynamic array of any type that can add and compress data. Vector is the content of an STD named domain, so it needs to be named qualified: Using Std::

Document directory Basic Requirements Create a vector instance Preset vector Length Create a vector with dynamically Adjustable Length Add a value to a vector object Use Vector Programming OneArray)It is like a container that organizes a set of variables together. A s

1. PrefaceIn the seventh chapter we know that the essence of the elements in Webgis is uicomponent, and the vector layer is essentially a canvas containing n (n>=0) uicomponent. In UIComponent's graphics, we draw a vector shape (shape) from the vector data and assign the vector Data's properties (attributes) to the uic

standard library vector type learning Vector Object Initialization method vector ; Default constructor v1 is empty vector; V2 is a copy of V1, V2 and v1 must be of the same type, that is, when the type in angle brackets is defined. vector; V3 contains n elements of the val

Use of the vector of the STL Getting started with the first part Vectors can be used instead of arrays in C, or CArray in MFC, from many explanatory documents or online comments, and generally agree that vectors should be used more efficiently and with exceptional security. And vectors are the default containers recommended by STL, unless you know you have special needs, using vectors that do not meet your needs, such as requiring containers to be eff

Use of vector in C ++ Vector is the most common container in STL. It is an ordered container that supports random access. Simply put, vector is a dynamic array that can store any type of data, but the array is a static allocation space. Once the space is allocated, the size cannot be changed, but the vector is dynamica

Use of Vector The underlying Array Structure of the vector class, which contains components that can be accessed using integer indexes. However, the vector size can be increased or reduced as needed to meet the needs of adding or removing items after the vector is created. Therefore, you do not need to consider whether

1) Quantity: Also called scalar, pure quantity, only the size has no direction, can use a numerical value to determine;2) Vector: Also known as vector, describing this kind of quantity not only needs the size, but also needs to express its direction;3) directed segment: a segment with a certain length and a definite direction;4) geometric vector: short

The inner product of the first section of a vector. Mathematical Concepts 1. Inner product: With n-dimensional vector Make It is called [X,y] as the inner product of the vector x and Y. 2. Norm: A norm (or length) called a vector x. 3. Unit vector: The

Vector is the most widely used type of container in STL, and its important characteristics are summarized and summarized here. the initialization of vectors Vector initialization, see the following code. Vectorvector the capacity and size of the vectorVectors are stored sequentially in memory, so the vector is initialized with an initial capacity (capacity), and

The Vector class provides the ability to implement a growing array, and as more elements are added to it, the array becomes larger. After you delete some elements, the array becomes smaller. Vector has three constructors, public vector (Int. initialcapacity,int capacityincrement) public vector (int. initialcapacity) Pu