Img. Set on touch

[Sanya Exclusive]

How to apply coordinates to the image so that when you click on a certain part of the picture, some functions are performed

[alex.symbroson]

in the OnTouch callback function you get an event object as first argument which you can use to determine the touch position(s), the action and the source.

easiest would be to use the X and Y properties because they represent the first touch position.

then you can do a simple point-rect collision to determine whether the user touched a specific area on the image.

area = {
    x1:0.2,
    y1:0.3,
    x2:0.7,
    y2:0,3
}

function ImgOnTouch(ev) {
    if(ev.X > area.x1 && ev.X < area.x2 &&
       ev.Y > area.y1 && ev.Y < area.y2) {
        app.ShowPopup("area touched");
    }
}

[Stephan Stadler]

How to do, if the point of collision is not an area, but an botton or an image?

[Steve Garman]

I'm not sure I understand the question

Are you looking for something more complicated than checking that ev.Y is greater than a large number like 0.9 ?

[Stephan Stadler]

The area in the example above ist exactly defined.

How can i detect a collision, if it is not a defined area, but any other object?

[Steve Garman]

Collision detection is a bit off-topic for this thread

I recommend tou start a new thread and explain what you are starting with and what you want to achieve