3D 外观的 2D 绘图的适当转换 (Java)
我正在寻找适当的转换以使 2D 图像看起来像 3D 绘图。如果我在一张纸上用平行线画一条“路”，然后将纸的顶部向远离你的方向倾斜，使路看起来消失在远处，这就是我正在寻找的东西。
我正在使用 Java，并且想要一个合适的 API/库。我不相信“AffineTransformation”能够实现这一点。
I'm looking for the appropriate transformation to make a 2D image look like a 3D drawing. If I draw a "road" with parallel lines on a sheet of paper, and then tilt the top of the page away from you, so that the road appears to be disappearing into the distance is what I am looking for.
I'm using Java and would like an appropriate API/library. I don't believe "AffineTransformation" accomplishes this.
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您不需要 AffineTransformation，因为它将始终保留平行线，这不是您想要的。
幸运的是，Java 高级成像 API (
javax.media.jai) 正是您想要的，其形式为PerspectiveTransform< /code> 类（单击该链接查看文档）。You don't want an AffineTransformation, as that will always preserve parallel lines, which isn't what you want here.
Luckily the Java Advanced Imaging API (
javax.media.jai) has exactly what you want, in the shape of thePerspectiveTransformclass (click that link for docs).你的问题并不小，但肯定是可以解决的。您可以拍摄任何四面图像并应用 3D 透视变换。只是不要指望它只是一句台词。
我现在在家（当然，在睡觉前检查一下：D），但我几乎 100% 确定这是我用来在 C# 中查找适当代码的网站：
http://ryoushin.com/cmerighi/en-us/61,2007-10-29 /Image_Distortion_Enhancements.aspx
将其移植到 java 应该相当简单。如果该链接无法解决您的答案，请告诉我，我明天将使用更多信息编辑我的答案。
Your problem is not trivial, but certainly solvable. You can take any four-sided image and apply a 3D perspective transformation. Just don't expect it to be a one-liner.
I'm at home now (checking SO before going to sleep, of course :D), but I'm almost 100% certain this is the site I used to find the appropriate code in C#:
http://ryoushin.com/cmerighi/en-us/61,2007-10-29/Image_Distortion_Enhancements.aspx
Porting it to java should be fairly straightforward. Let me know if the link doesn't solve your answer and I'll edit my answer tomorrow with more info.
我无法给你一个简单的答案，但我可以告诉你，你要画的东西叫做两点透视。有了这些信息，也许您将能够找到一个可以获取 3D 对象并生成透视图的库。
这是我之前见过的一个简单的 Java 小程序，它演示了 2 点透视：
链接< /a>
希望这有帮助！
I can't give you a simple answer, but I can tell you that what you're looking to draw is called two-point perspective. With this information, maybe you will be able to find a library that takes a 3D object and produces a perspective view.
Here's a simple Java applet that I've seen previously that demonstrates 2-point perspective:
Link
Hope this helps!