I've got yet another problem, sigh... I have a rec...

# compose

[Nat Strangerweather]

I've got yet another problem, sigh... I have a rectangle that covers the whole canvas. I am using detectTapGestures to detect presses. When I press somewhere within the rectangle, I only get success some of the time - it's really inconsistent. I have no idea what is wrong with my simple code. Any ideas? Code in thread.

[Nat Strangerweather]

onPress = {
                        val x = it.x
                        val y = it.y

                        if(rect1.contains(x,y))
                        {
                            println("Success")
                        }
                    }

[Kirill Grouchnikov]

If you remove all the extra logic and just do println of coordinates, do you see it printing on every press, or does it skip presses?

[Kirill Grouchnikov]

Is there any motion between down and up?

[Nat Strangerweather]

I can now see that there is an area that is always successful, and an area that is never successful. It seems as if the rectangle actually smaller than the tapdetection. I am wondering if the units used are the same. I think that my canvas is defined in pixels. What unit is used for touch input?

[Nat Strangerweather]

Anyway, to answer your questions, yes, when I print everything, all works apart from the fact that the measurements do not seem to correspond.

[Nat Strangerweather]

Hope I'm making sense. 😉

[Nat Strangerweather]

So the x dimension of my rectangle/canvas is 1000f. If I click on the right side of it, the x coordinate is roughly 1397f. This means that the unit of measurement is different.

[Nat Strangerweather]

What unit of measurement is used for touch input?

[Gabriel Melo]

Are you sure your canvas is defined in px and not dp?

[Nat Strangerweather]

ok, never mind, my bad, I made a mistake. My touch inputs were covering the whole of my screen, not just my canvas. Thanks for your help! 😊