可视化工具VTK开发工具重要文件、用户指南…

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visualization tool kit开发工具的重要文档，vtk user guide是所有vtk爱好者都想要的，但是一般是没有电子版的，我也是有幸从别人那里得到的，对学习和使用vtk作开发，了解图形学都有很大的帮助-visualization tool kit development tools important documents, vtk user guide is that all VTK fans want, but in general there is no electronic version, and I am also fortunate enough to get from others, to study and use VTK for the development, understanding of graphics are of great help