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Comments (4)

Rowandjj avatar Rowandjj commented on May 5, 2024

@niceskylei 你想实现什么效果呢?

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niceskylei avatar niceskylei commented on May 5, 2024

@Rowandjj wechatimg154
如上面的图,小点拖动时,不能把它限制在圆圈内。

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Rowandjj avatar Rowandjj commented on May 5, 2024

@niceskylei hi, 我写了一个demo,你看下能不能满足你需求:
https://jsplayground.taobao.org/raxplayground/d617a85a-7cd7-4025-802e-24a1f301043b

核心逻辑在这里:

    var expression_x_origin = `(x*x+y*y)<${r*r}?x:x*${r}/sqrt(x*x+y*y)`;
    var expression_y_origin = `(x*x+y*y)<${r*r}?y:y*${r}/sqrt(x*x+y*y)`;

只需要通过三元运算符限定边界就好了,希望能帮到你。

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niceskylei avatar niceskylei commented on May 5, 2024

@Rowandjj 感谢,我们测试了一下有效果,非常感谢。

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