Created
April 18, 2017 15:10
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画圆
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| Manipulate[ | |
| Module[ | |
| {m={-2000,1500}, | |
| n={8000, 1500}, | |
| radius=15000 | |
| }, | |
| yuan[\[Alpha]_]={radius* Cos[\[Alpha]],radius*Sin[\[Alpha]]}+m; | |
| With[{p=yuan[\[Alpha]]}, | |
| E=m+t*{p-m}; | |
| ts=Solve[ | |
| EuclideanDistance[E,n]==(1-t)*radius, t]; | |
| Graphics[ | |
| { | |
| Point/@{m, n,p}, | |
| Circle[m, radius], | |
| Line[{m, p}], Point[m+ts*{p-m}] | |
| }]]] | |
| ,{\[Alpha], 0, 2 \[Pi]}] |
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