Android的，移动的位图沿路径？ [英] Android, move bitmap along a path?

问题描述

我想知道是否有可能从路径选择的坐标绘制位图随着时间的推移，例如，我有一个阳光的形象，我想移动它，随着时间的推移，沿弧形路径

有没有一些方法来定义这样的路径，然后沿着它移动，这样我就不用数学计算呢？

感谢。

解决方案

我在想一个解决办法：

  _
       / \
 

如果您的圆弧有这种形状的（意思是不到半圈，定位horizo​​ntaly），那么你可以遍历的x值和使得x得到y表示的路径上。那么你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:

         _
       /   \

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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