opengl functions tutorial

Original post address: http://ogldev.atspace.co.uk/www/tutorial13/tutorial13.htmlIn the previous tutorial, we used the default camera coordinates at the origin of the 3D coordinates. In this tutorial, we will start to discuss how to place the camera at any position in the 3D space, so that we can conveniently observe objects from different perspectives. There are three factors that determine the coordinate

; // Object IDInt step = 0, steps = 200; // Number of transformed stepsBool morph = false; // whether to use Deformation The following structure defines a three-dimensional Vertex Typedef struct{Float x, y, z;} Vertex;The following structure uses vertices to describe a 3D object Typedef struct // object structure{Int Verts; // Number of vertices in an objectVertex * points; // pointer containing vertex data} Object;Maxver is used to record the maximum number of vertices in each object. If one ob

GLUT Tutorial Keyboard InputGLUT allows us to write programs and add keyboard input control, including common keys and other special keys (such as F1 and up ). In this chapter, we will learn how to check which key is pressed, what information can be obtained from glut, and how to process keyboard input. Now, you should note that as long as you want to control the processing of an event, you must tell glut in advance which function will complete this

SQLite tutorial (4): built-in functions, sqlite tutorial built-in functions 1. Aggregate functions: The aggregate functions supported by SQLite are also supported in many other relational databases. Therefore, here we will just gi

Basic python tutorials-Introduction to user-defined functions, basic python tutorial Functions The most important purpose of a function is to make it easier for us to reuse the same program. Some operations are affiliated to a function. When you want to implement the same operation in the future, you only need to call the function name, without repeating all the

Summary of nine common functions for PHP development. 1. any number of function parameters you may know that PHP allows you to define a function with default parameters. However, you may not know that PHP also allows you to define a function with completely arbitrary parameters. 1. any number of parameters of the function You may know that PHP allows you to define a default parameter function. But you may not know that PHP also allows you to define a

. DBSchema document, which is connected in the following document. Attached: NCodeGenerate.zip Document: Document NCodeGenerate series of articles:I. What is NCodeGenerate? Ii. Code Generation Tool-NCodeGenerate tutorial (1) traverse all tables in the database III. Code Generation Tool-NCodeGenerate tutorial (2) code Generation Tool-NCodeGenerate tutorial (3) ge

When connecting, this function will first attempt to find a (persistent) connection with the same user name and password on the same host, and if found, return this connection identity without opening a new connection. Second, when the script finishes executing the connection to the SQL server is not closed, the connection will remain open for later use (Mysql_close () will not close the connection established by Mysql_pconnect (). PHP tutorial MySQL

has two shortcomings so that it does not support PHP4. this is because of the support of many new features in PHP5. Second, it is relatively complicated. For most tasks, such as paging, the time limit in Symfony is much more complex than other frameworks. this is by no means a concise framework.Seagull FrameworkThe Seagull framework looks pretty good and comes with many features. The support for PHP4 is also very beneficial to its promotion. I am still using PHP4, and most storage vendors have

[Cocos2d-js tutorial] some common functions in cocos2d-js, cocos2d-js tutorial This article by qinning199 original, reproduced Please note: http://www.cocos2dx.net/post/223 1. cc. rectIntersectsRect (ra, rb) checks whether two rectangles are intersecting. If yes, true is returned. Use Case: Var rectA = cc. rect (0, 0, 5, 10 ); Var rectB = cc. rect (4, 9, 5,

PHP Tutorial: detailed description of program scripts and database functions (1 ). The Institute of fire station has compiled some articles for programmers, which will be provided to you in future articles. I hope to help you. thank you for your contribution! This article mainly describes some articles prepared by the Institute of fire station for programmers, which will be provided to you in future article

tutorial "," Introduction to Php+mysql Database Operation "and" PHP common database Operation Skills Summary " It is hoped that this article will help you to design PHP based on the Zend Framework framework. Articles you may be interested in: Zend Framework Framework Tutorial Zend_db_table_rowset Usage Example Analysis Zend Framework Tutorial Zend_db_t

be familiar with the application of the function, only use more practice, think more. At the same time, do not know if there is no discovery, this section of the function is written in a file, but sometimes we write the function is in another file, then we can not use another file directly, the above all the functions can not be used, as a PHP programmer, you have to know, there must be a way to solve this problem, um , can solve, include and require

arrays. The array_merge function and the + operator of the array are confused. I wrote a small program to compare them and found their differences. In particular, the + operator means to remove the array unit (de-duplicated 7. get to know the php array_merge function again. phparraymerge_PHP tutorial Introduction: re-understand php array_merge function, phparraymerge. Re-understand the php array_merge function, and phparraymerge re-understand the php

call it directly.Recursive call of functionsRecursion refers to self-calling itself. for example, if a function calls itself, recursion is an algorithm. its professional saying is:Recursion solves a large and complex problem by converting it into a small problem similar to the original problem, the recursive strategy can describe the repeated computing required in the problem-solving process with only a small number of programs, greatly reducing the amount of code in the program.Here we will ju

PHP_MySQL tutorial-basic functions on page 1 on the third day Welcome to the third and last course of this tutorial. If you have learned the first and second lessons, you have mastered the basic installation and programming knowledge of MySQL and PHP. Next we will introduce some other PHP functions, which may be useful

Php functions and passing parameters. This tutorial introduces the function call and function definition syntax, and describes the variables in the function and the numerical method for passing values to the function. This tutorial will introduce the call and determination of functions. This

Tags: SQL query statement SQL statement SQL Tutorial SQL language SQL database tutorialOracle SQL Language Common functions _ Beyond OCP Proficient Oracle Video Tutorial Training 30This course introduces:Oracle Video tutorial, wind Brother this set of Oracle Tutorial trainin

generally by a large number of small functions rather than by a small number of large functions, which is called "small functions constitute a large program." The advantage of this is that each part is fully independent of each other and has a single task. Therefore, these fully independent small modules can also be used as a fixed specification of small "compon

This tutorial is a tutorial on using php to write ftp File Upload functions. php is very powerful. You can use its own functions to instance ftp functions and implement File Upload functions. This