Tag：vertex

Time：20211019
background This article is included inFront end Reading Clubspecial column The content related to texture has been introduced above and implemented in 2D using webgl. Today, we continue the content of the previous lesson. For the 3D implementation of texture, we have absorbed the MDN tutorial mode. I feel that this learning track is also […]

Time：20211017
origin Recently read < < my first algorithm book > > ([Japan] Ishida Baohui; Miyazaki Xiuyi)This series of notes is intended to use golang exercises Graph search Graph search refers to starting from a vertex of the graph, Reaching different vertices through edges, The process of finally finding the target vertex. Depending on the order […]

Time：20211014
origin Recently read < < my first algorithm book > > ([Japan] Ishida Baohui; Miyazaki Xiuyi)This series of notes is intended to use golang exercises Dixtra algorithm Similar to the Behrman Ford algorithm, Dijkstra algorithm is also an algorithm for solving the shortest path problem, It can be used to find the path with the […]

Time：20211013
origin Recently read < < my first algorithm book > > ([Japan] Ishida Baohui; Miyazaki Xiuyi)This series of notes is intended to use golang exercises A * (Astar) algorithm A * (Astar) algorithm is also an algorithm for solving the shortest path problem in the graph, It is developed from dixtra algorithm. A * algorithm […]

Time：20211012
With the deepening of learning, our knowledge is constantly expanding and enriching. Does the tree structure make everyone circle? Trust me, after learning the graph, you will find that the binary tree is simply too simple to say. In fact, what we call a tree is also a special form of a graph. Concept of […]

Time：2021108
After learning the basic structure and traversal of graphs, we will continue to learn some basic applications of graphs. In the previous data structures, we didn’t touch too many application scenarios, but these two types of applications in the figure are really common problems in interviews or exams, and the frequency is still very high, […]

Time：2021106
This paper makes some changes and deletions on the basis of the original text [turn]https://www.cnblogs.com/chen0307/articles/9645138.html [introduction and learning of Python drawing library turtle] In English, turtle means: turtle; Turtles (of any kind); Tortoise; Water turtles; Soft shelled turtleThe turtle library is a very popular function library for drawing images in Python language. Therefore, we can […]

Time：2021910
Hematemesis sorting programmer must read list:https://github.com/silently9527/ProgrammerBooks WeChat official account: beta Java In the first part, we learned depth first search and knew how to find paths in the graph through depth first search; In this article, we continue to learn other application scenarios of depth first search algorithm Connected component Find all connected components from […]

Time：2021826
The main contents of this paper are: the definition of graph and basic terms Definition of graph chart Composition of figure G: it is composed of the set E of data elements and the relationship set e between data, which is recorded as: G= Vertex: data element. V is the finite non empty set […]

Time：2021818
I don’t know how readers thought in the last issue. This issue of the article is followed by the last issue. The main content of this paper is: the C + + code implementation of graph (adjacency matrix method), mainly the specific implementation of each class Abstract base class of graph 1 // […]

Time：202182
1. Use of agents <UIScrollViewDelegate> 2. Set the proxy target to self (this is not required for uitableview, because uitableview itself inherits from uiscrollview) self.scrollView.delegate = self; 3. #pragma mark – #pragma mark – UIScrollView Delegate (void)scrollViewDidScroll:(UIScrollView *)scrollView { CGPoint offset = scrollView.contentOffset;// Scrollview the offset of the current display area point from the frame […]

Time：2021728
It may be convenient to display the 3D model through three.js, but do you know how it works step by step from mesh construction to mapping to final rendering? Now we can implement it directly by using the underlying web GL and a little mathematical knowledge. The effect of this section:Webgl 3D Earth content syllabus […]