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[orx-marching-squares] Update README.md

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This commit is contained in:
Edwin Jakobs
2023-02-03 07:12:53 +01:00
parent 5e6123c958
commit 97ecb7ca14
1 changed files with 4 additions and 4 deletions
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orx-marching-squares/README.md
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@@ -8,16 +8,16 @@ Tools for extracting contours from functions
```kotlin
fun f(v: Vector2) = v.distanceTo(drawer.bounds.center) - 200.0
val segments = findContours(::f, drawer.bounds, 16.0)
drawer.lineSegments(segments)
val contours = findContours(::f, drawer.bounds, 16.0)
drawer.contours(contours)
```
With a small adjustment to the given function one can use `findContours` to find iso contours. The trick is to add a cosine over the distance function.
```kotlin
fun f(v: Vector2) = cos((v.distanceTo(drawer.bounds.center) / 100.0) * 2 * PI)
val segments = findContours(::f, drawer.bounds.offsetEdges(32.0), 16.0)
drawer.lineSegments(segments)
val contours = findContours(::f, drawer.bounds.offsetEdges(32.0), 16.0)
drawer.contours(contours)
```
<!-- __demos__ -->
## Demos