原创 Volume of n-simplex | n維單純形的體積
An is an n-simplex which is supported by n vectors (a1,a2,…,an) of same origin. Vn is the signed volume of An.
原创 3D 座標變換 公式 推導
更新 1 [用抽象代數討論仿射變換和仿射空間中的座標變換] ,以下是之前的內容。 下面使用行向量: e1=(1,0,0) e2=(0,1,0) e3=(0,0,1) i, j, k是三個線性無關的向量2,它們在e1,e2,
原创 Unusual Errors of the Unity3D Editor -- Caused by Virus
1. Failed to import package with error: Couldn't decompress package UnityEditor.Web.JSProxyMgr:DoTasks() Maybe 7z.exe u
原创 線性變換與仿射變換 點和向量的代數定義
(ง •_•)ง [用抽象代數討論仿射變換和仿射空間中的座標變換] 是重新整理的,以下是之前的內容。 這裏談論的是計算機圖形學中的內容,當然源自數學,但有的地方沒有使用純粹數學上的那種嚴格定義。 線性變換 抽象定義 域F上的向量
原创 unsigned minus unsigned
Unsigned integer arithmetic is always performed modulo 2n where n is the number of bits in that unsigned integer. (From
原创 some common usage of robocopy
robocopy xcopy copy robocopy multiple files at once : robocopy source_folder destination_folder file_name_1 file_name_
原创 windows shared memory -- msdn document of the file mapping object
EXECUTE? Execute addresses within the shared memory? CreateFileMapping PAGE_READONLY Allows views to be mapped f
原创 解決 Excel 打開 UTF-8 編碼 CSV 文件亂碼的 BUG
直接用 Excel 2013 打開 UTF-8 編碼的 CSV 文件會導致漢字 出現亂碼。 原因可能是 Excel 以 ANSI 格式 打開,不會做編碼識別。 打開 UTF-8 編碼的 CSV 文件的方法: 用 Notepad++ 打開
原创 unresolved external symbol __imp__... when I want to link a static library
Today I build an OpenGL tutorial project with GLEW in visual studio 14 (2015). I don't want to deal with "where to put
原创 Remake Quaternions
That said when quaternions are used in geometry, it is more convenient to define them as a scalar plus a vector. An
原创 How to write a console application running in background (hidden window)?
On windows platform with visual studio: #pragma comment( linker, "/subsystem:windows /entry:mainCRTStartup" ) int main