Android，沿路径移动位图? [英] Android, move bitmap along a path?

问题描述

我想知道是否可以从路径中选择坐标以随时间绘制位图，例如，我有一个太阳的图像，我想随着时间的推移沿着弧形路径移动它.

有没有办法定义这样的路径然后沿着它移动，这样我就不必用数学方法计算它?

谢谢.

解决方案

我在想一个解决方案:

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如果您的弧形具有这种形状(意味着小于半个圆并水平放置)，那么您可以迭代 x 值，并为该 x 获取路径上的 y.然后将您的位图移动到该位置.

I would like to know if it's possible to select coordinates from a path to draw a bitmap over time, for example, I have an image of a sun, and I would like to move it, over time, along an arc path.

Is there some way to define a path like this and then move along it, so that I don't have to calculate it mathematically?

Thanks.

解决方案

I'm thinking of one solution:

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       /   \

If your arc has this kind of shape (meaning less than half a circle and positioned horizontaly) then you could iterate the x value and for that x get the y that's on the path. Then move your bitmap to that position.

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