其实我听说flock也挺早的，只是以前觉得用不上那些功能。 最近觉得应该开使拥抱Web 2.0了，于是搞了个Flock2.0b2试了试。 还是不错的，用了用感觉确实很方便，另外就是觉得屏幕有些不够用了。
不过还是有些问题的，比如是我用64位系统，flock是32位的，虽然可以运行，但是scim运行不了。本想自己编译一个，但是没有找到源码，再说吧。
不过还是有些问题的，比如是我用64位系统，flock是32位的，虽然可以运行，但是scim运行不了。本想自己编译一个，但是没有找到源码，再说吧。
In perspective drawing, a vanishing point represents a group of parallel lines, in other words, a direction. For any point on the paper, if we want a line towards the same direction (in the 3d space), we simply draw a line through it and the vanishing point. But sometimes the vanishing point is too far away, such that it is outside the paper/canvas. In this example, we have a point P and two perspective lines L1 and L2. The vanishing point VP is naturally the intersection of L1 and L2. The task is to draw a line through P and VP, without having VP on the paper. I am aware of a few traditional solutions: 1. Use extra pieces of paper such that we can extend L1 and L2 until we see VP. 2. Draw everything in a smaller scale, such that we can see both P and VP on the paper. Draw the line and scale everything back. 3. Draw a perspective grid using the Brewer Method. #1 and #2 might be quite practical. #3 may not guarantee a solution, unless we can measure distances/p...
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