Animate text like marquee

[Astrovic]

I have to animate the text, like marquee tags. I am using this code, but there is strange behavior. The text initially scrolls slowly, then speeds up, and then slows down again. Have any ideas or suggestions?
Video ---> https://astrovicapps.com/_apptest/marquee_text.mov

var win = Ti.UI.createWindow({
  backgroundColor: "white"
});
var view = Ti.UI.createView({
  top: 50,
  height: 60,
  backgroundColor: 'red'
});
var label = Ti.UI.createLabel({
  color: 'white', 
  left: 0,
  height: 20,
  width: Ti.UI.SIZE,
  text: "Lorem ipsum dolor sit amet, consectetur adipisci elit, sed do eiusmod tempor incidunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrum exercitationem ullamco laboriosam, nisi ut aliquid ex ea commodi consequatur.",
  font: {
    fontSize: '18sp',
    fontWeight: 'bold'
  }  
});

// Text animation
function animateText() {
  var width = label.toImage().width / Ti.Platform.displayCaps.logicalDensityFactor;  
  label.left = Ti.Platform.displayCaps.platformWidth;
  label.width = width;
  var animation = Titanium.UI.createAnimation({
    left: -width,
    duration: width * 30, // Otherwise short texts run too fast and long texts slowly
    repeat: 100,
  });
  label.animate(animation); 
};

view.add(label);
win.add(view);
win.open();
animateText();

[Astrovic]

This solves the problem: curve: Titanium.UI.ANIMATION_CURVE_LINEAR, and so

var animation = Titanium.UI.createAnimation({
    left: -width,
    duration: width * 30, // Otherwise short texts run too fast and long texts slowly
    repeat: 100,
    curve: Titanium.UI.ANIMATION_CURVE_LINEAR
  });

Thanks to @m1ga for the suggestion!

[Astrovic]

If you are interested in a more functional text animation, @macCesar has created this fantastic library: https://github.com/macCesar/ti.scroller

[macCesar]

Thanks Astrovic!!! 😊