Qt.point() in QML

tomy

Hello,

I searched much to find a simple way to use Qt.point in QML but couldn't attain it, unfortunately.

At the beginning of a main.qml component there's this declaration:

property var test_1

then in below is a function where I have assigned the x and y of another component to it this way:

test_1 = Qt.point(rightRacket.x,rightRacket.y)

Afterwards, in some other part in the current main.qml component, I wanted to print those coordinates this way:

console.log("test_1:", test_1.x, test_1.y)

But I get an error asserting:
TypeError: Cannot read property 'x' of undefined

What is the problem, and how to achieve that goal, please?

ODБOï

@tomy hi,

ApplicationWindow {
    id: window
    visible: true
    width: 600
    height: 200
    property var mypoint //: Qt.point(Math.random(),Math.random())

    Component.onCompleted: {
        mypoint = Qt.point(Math.random(),Math.random())
        console.log(mypoint.x)
    }
}

This works perfectly.

@tomy said in Qt.point() in QML:

TypeError: Cannot read property 'x' of undefined

this is saying your test_1 is undefined.

tomy

@LeLev

But I have declared it under ApplicationWindow, property var test_1, and lower inside a function, test_1 = Qt.point(rightRacket.x,rightRacket.y), and lower than that inside another function, console.log("test_1:", test_1.x, test_1.y). So is it undefined?

tomy

Since I only need the y position of the a racket at the collision time and it's one number, I replaced the Qt.point with a real number:

property real rRYPoint

Then when collision occurs:

rRYPoint = rightRacket.y

Then the collision took place two times but console.log("The x position of rightRacket:", rRYPoint) wrote the following for both the two!

qml: The y position of rightRacket: 0