Now all you need to do is animate -0.3 value. There are several ways to do it, depending on what you need. You could use Tween or AnimatedWidget. Since it’s not easy to explain here’s video that could help in choosing it: https://www.youtube.com/watch?v=GXIJJkq_H8g
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Answers
You can achieve skew by using matrix transformation
Now all you need to do is animate -0.3 value. There are several ways to do it, depending on what you need. You could use Tween or AnimatedWidget. Since it’s not easy to explain here’s video that could help in choosing it: https://www.youtube.com/watch?v=GXIJJkq_H8g
You can try Transform with Matrix4