<h1 id="heading-v1angletosignedv2">v1.angleToSigned(v2)</h1>
<pre><code class="lang-dart">angleA = v1.angleToSigned(v2)
    v2
   ^
  /
 / 
/ angleA
----&gt;v1
</code></pre>
<h1 id="heading-how-do-i-rotate-at-a-certain-speed">How do I rotate at a certain speed?</h1>
<p>We use the <code>dt</code> -delta time, in the <code>update</code> method.</p>
<pre><code class="lang-dart">angleDelta = dt * rotationSpeed;
angle = (angle + angleDelta) % (<span class="hljs-number">2</span> * pi);
</code></pre>


# v1.angleToSigned(v2)

```dart
angleA = v1.angleToSigned(v2)
    v2
   ^
  /
 / 
/ angleA
---->v1
```

# How do I rotate at a certain speed?

We use the `dt` \-delta time, in the `update` method.

```dart
angleDelta = dt * rotationSpeed;
angle = (angle + angleDelta) % (2 * pi);
```

Flame(Flutter game) Angle of a Vector, Anchor(logical center)

Table of contents

v1.angleToSigned(v2)

How do I rotate at a certain speed?