Determining if the circle intersects the given triangle
显示 更早的评论
Hi, This is coming up when I am doing Finite Element Method: I've triangulation of the rectangle in 2d, and I am looping over the triangles. I also have few circle inside the rectangle. When I am in a current triangle, I want to find out if it intersects any of those circle, and if yes, how it intersects them, e.g. if it intersects one of the vertices, or only edges, or both. thanks
回答（2 个）
John D'Errico
2011-12-17
0 个投票
We won't do your homework for you. This is just basic geometry. So do it.
1. Write down what it means for these objects to intersect. Do it on paper, forcing yourself to think clearly. If you don't bother thinking clearly about a problem, you cannot solve it. What must happen for an intersection?
2. Given the above step, define a set of tests to determine if there is an intersection.
3. Write matlab code for the above.
Only you can do this. And only you care about the result, as it is your homework, not ours.
Image Analyst
2011-12-17
0 个投票
Try the function called something like inpolygon(). If you know the perimeter coordinates, you're all set.
类别
在 帮助中心 和 File Exchange 中查找有关 Data Import from MATLAB 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
