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GUI ScrollViewer


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Something like this:

canvas.addEventListener("wheel", (evt) => { 
	if(this.slider[name].isVisible == true) {
		if(evt.deltaY < 0 && this.slider[name].value >= 0) {
			this.slider[name].value -= 50;
		} else if(evt.deltaY > 0 && this.slider[name].value < this.slider[name].maximum) {
			this.slider[name].value += 50;
}, false);


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This is a dirty way of doing it https://www.babylonjs-playground.com/#3EF49E#1 will have to do more studying to add "wheel" code into the source code as observables and events are one of my many weak points.

Note that for both sliders the range is 0 to 100 from which the amount to scroll the viewer window is then calculated. You can guess the name of the horizontal bar ???

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