如何在处理中创建正弦波？

问题描述：

我想使用矢量创建正弦波（就像我使用的 box2d ）。

I would like to create a sine wave using vectors (as I am using box2d).

所以我到目前为止（在 void draw（）中）

So far I have (in void draw())

Vec2 mov2 = new Vec2(sin(angle)*scalar,0);

for (int j = 0; j <= 10; j++) {
   bridge.particles.get(j).body.setLinearVelocity(mov2);
}

其中 bridge 是一连串个粒子。但是，这会使所有粒子同时来回移动，而我想像正弦波一样移动，以便每个粒子在上一个粒子之后稍稍移动。

where bridge is a chain of particles. However, this makes all the particles move back and forth at the same time whereas I would like to move like a sine wave so that each particle moves just slightly after the previous one.

答

您需要在循环内的每个粒子之间添加某种偏移量。

You need to add some sort of offset between each of the particles inside your loop.

示例：

for( int i=0; i < 360; i++ ){   
         float x = 1 + i;
         float y = (float)(Math.sin( Math.toRadians(i+currentOffset)));
         bridge.particles.get(j).setTransform(x, y, 0);
 }
currentOffset+=1;

如何在处理中创建正弦波？

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