shear x

Shear is the transformation of the coordinate system, non-uniform stretching. When shearing, the angle changes, but the area or volume does not change. It can also be understood as the angle change between axes, resulting in distortions.For example,

http://acm.hust.edu.cn/vjudge/problem/10769For the n Zhang Hai, cut a rectangle on each poster to find out the area andThe cut-off poster is divided into four rectangles, which is the common area and problem.#include

Today, I saw another good article posted on my blog and learned it... Mouse picking for elements in direct3d 　 By the greatest sword, the second Space Index: 1. What is pickup and what can it do? 2. Steps and Implementation of the pick-up operation

Http://hi.baidu.com/macsofft/blog/item/0b05dbd4069e7500a18bb79f.htmlThere is a more primitive article, where can I find a chance,However, I found that I am not suitable for thinking in the 3D world. I still need to study 2D image processing well.

The VI editor has 3 modes: Command mode, input mode, and last line mode. It is important to master these three modes: the Command mode: The default entry is the command mode after startup, the command can be switched from this mode to the other

Preface: As we all know, the room is the operation of electronic equipment, and electronic equipment, large size, and very heavy, so the room to have a higher load-bearing capacity, to meet the load-bearing requirements of equipment, but now many

To use a keyboard shortcut or a key combination, you can press the modifier keys and the character key at the same time. For example, pressing the Command key at the same time (labeled Keys) and the "C" key will copy any currently selected content

I. IntroductionIn work development, there are often many problems with Coordinate System Conversion. There are many discussions about how to achieve the conversion between different coordinate systems. Based on practical application projects, most

Original link: http://www.cnblogs.com/lansh/archive/2010/08/19/1803378.htmlThe VI editor has 3 modes: Command mode, input mode, and last line mode. It is important to master these three models:Command mode: VI starts after the default entry is the

The following are the modifier key symbols that may appear in the OS X menu:?—— (?)? --control?—— (ALT)?—— Shift?—— Caps Lockfn--function key is FNStart shortcut keysPress the key or key combination until the desired function appears/appears (for