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Correct number of points

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yanxun827 2018-03-10 18:49:13 +00:00 • committed by GitHub
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3-animation/1-bezier-curve/article.md
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@ -26,7 +26,7 @@ If you look closely at these curves, you can immediately notice:
1. **Points are not always on curve.** That's perfectly normal, later we'll see how the curve is built. 1. **Points are not always on curve.** That's perfectly normal, later we'll see how the curve is built.
2. **The curve order equals the number of points minus one**. 2. **The curve order equals the number of points minus one**.
For two points we have a linear curve (that's a straight line), for three points -- quadratic curve (parabolic), for three points -- cubic curve. For two points we have a linear curve (that's a straight line), for three points -- quadratic curve (parabolic), for four points -- cubic curve.
3. **A curve is always inside the [convex hull](https://en.wikipedia.org/wiki/Convex_hull) of control points:** 3. **A curve is always inside the [convex hull](https://en.wikipedia.org/wiki/Convex_hull) of control points:**
![](bezier4-e.png) ![](bezier3-e.png) ![](bezier4-e.png) ![](bezier3-e.png)