How can we check that point is inside a path? I sa...

# compose-desktop

[rsktash]

How can we check that point is inside a path?
I saw two functions in android Path.op(path2: Path, op: Op) and Path.op(path1: Path, path2: Path, op: Op)
But in compose there is only one Path.op(path1: Path, path2: Path, op: Op)

[Daniel]

How do you use Path.op to check if a pointer is inside a path? Looking at the docs it seems unrelated.

Here's what I'm currently doing on android, and I'm wondering if what you're describing would work better.

fun Path.contains(offset: IntOffset): Boolean {
    // See <<https://stackoverflow.com/a/10586689>>
    val path = asAndroidPath()
    val bounds = RectF()
    path.computeBounds(bounds, true)
    val region = Region().apply {
        setPath(path, bounds.toRegion())
    }

    return region.contains(offset.x, offset.y)
}

[rsktash]

The region is android specific isn’t it?

[Daniel]

Totally, this wouldn't solve your question at all. I just saw your post and wondered if I was missing something I could use in my own android app

[rsktash]

I’m also wondering if there is any built-in method .
I tried all param options but the result is same

val path = Path()
val success = path.op(path1, path2, PathOperation.intersect)
drawPath(path, Color.Black)

[Daniel]

Doesn't the code you've posted compute the intersection of two paths instead of checking if a point is inside a pth?

[rsktash]

If there is no intersection it means the point is not inside the path. Am I wrong?

[Daniel]

Are you allowed to create a path that's just a single point?

[rsktash]

We can draw circle with minimum radius

[Daniel]

And that works on Android?

[rsktash]

I tried it with compose path. It didn’t work. Now I’m trying it with android path

[Daniel]

Because I wouldn't be surprised if Float.MIN_VALUE sized circles behave weirdly

[rsktash]

The android path works

[Daniel]

Thanks

[Daniel]

Good luck!

[rsktash]

It is drawing only intersection

[rsktash]

But compose path is rendering only union path