CPlusPlus
Check Whether File And Folder Exist
The test environment is Linux system and C.These interfaces can be used in wasm project to check files in virtual memory.
Culture
Mathematics MuLan | Sophie Germain
Mathematics mulan | Sophie Germain数学花木兰 | 索菲·热尔曼 Happy childhood 幸福的童年 Germain was born in a wealthy merchant family. When she was young, the social environment in France was not very good, and the society order was chaotic. In order to protect her, her parents made her stay at home to Read more…
Tool
Photo Box
Here is a funny tool photo box for displaying different images. You can upload your zip file which contains images on this page, the tool can extract these files and show them as a rotating box. It’s recommended to have 6 images in the zip file. The address: https://www.weiy.city/functions/photo-box/
Web
WASM – Export Struct For Web From CPP Code
The definition for struct GapValue in header file UController.h. Struct usage and binding for wasm in UController.cpp.
VTK
Use Matrix To Keep Two Camera Same Status
The post shows how to use difference matrix to let two camera have same action. We can get the following relationship between viewUp vector and view plane normal. The view transform matrix can be generated from camera focal point, postion and view up vector. Matrix of camera’s view transform: Read more…
VTK
VTK – Set Image As Render Background, Save 3D Model Screen Shot With Transparent Background
Set An Image As Render Background std::string bgImgPath = “./resource/bg.png”; vtkNew<vtkPNGReader> imgReader; imgReader->SetFileName(bgImgPath.c_str()); vtkNew<vtkTexture> backgroundTexture; backgroundTexture->SetInputConnection(imgReader->GetOutputPort()); m_Renderer->GradientBackgroundOff(); backgroundTexture->Update(); m_Renderer->SetBackgroundTexture(backgroundTexture); m_Renderer->SetTexturedBackground(true); Save 3D Model Screen Shot With Transparent Background Don’t set textured background for renderer object. Then set alpha bits for renderer window object, read RGBA information from back buffer when Read more…
Culture
The Story Behind The Song, 沈园外-阿YueYue
Tang Wan, a talented girl in the Southern Song Dynasty of China, who has been smart and sensible since she was young. She is a typical lady of the family. All elders liked this girl, includes Lu You’s mother Tang. So the family of Lu sent a luxurious hairpin as Read more…
Culture
The Story Behind The Song, 赤伶-李玉刚
After the July 7 incident In 1937, Japan accelerated its invasion of China. Many regions in the country turned out be in a mess.The small town Anyuan in Jiangxi Province is peaceful because it’s not affected by the war.1937年，“七七事变”发生后，日本加快了侵略中国的步伐，中国的很多地区陷入了战乱之中。而江西安远县这个小县城，因为暂未受到战火的波及，所以当地还一片祥和。 People will go to theater to listen Pei Yanzhi sing in Read more…
Culture
The Story Behind The Song, 吹梦到西洲-黄诗扶
无何化有 感物知春秋秋毫濡沫欲绸缪 搦管相留( Translate: )The hero perceived wars in the world in his dream, he decided to go out of the mountains to save the world. But the heroine wrote a letter to tell him she want to marry him, not to go.男主在梦境之中，感知到天下纷争，打算出山平定天下，拯救苍生。但是女主写了一封书信过来说想跟他结婚，要挽留他，叫他不要走。 留骨攒峰 留容映水秀留观四时曾邂逅 佳人西洲( Translate: )The hero comforted Read more…