From: http://clootie.narod.ru/delphi/download_custom.html ParticleSystem1 - unidirectional generator sample Main idea of this sample was to demonstrate right and wrong ways of generating uniform distribution of unit length vectors - so end-poi

非常重要的绘图技术——双缓冲——，太经典的源代码，简单明了，高手写的，值得初学者借鉴。-Important technical drawings-- double buffer--, very classic source code, simple and clear, master of writing, it is worth drawing for beginners.

Canvas绘图程序Java源码,Canvas绘图程序Java源码，可以用来画直线、矩形、圆角矩形、三角形、文字等，把缓冲区图像的内容绘制到画布上-Canvas drawing program source code in Java, Canvas drawing program Java source code, can be used to draw a straight line, rectangle, rounded rectangle, triangle, text, the buff

画图板的实现，其中包括了线程，缓冲画布，画线，圆等简单的功能实现，有良好的代码书写格式。-Drawing board, including threads, buffer canvas, simple functions to draw lines, circles, etc. to achieve, there is a good code writing format.