private float getValueFromMouseEvent(dfMouseEventArgs args)
{
var corners = track.GetCorners();
var start = corners[0];
var end = corners[orientation == dfControlOrientation.Horizontal ? 1 : 2];
var plane = new Plane(transform.TransformDirection(Vector3.back), start);
var ray = args.Ray;
var distance = 0f;
if (!plane.Raycast(ray, out distance))
{
return(this.rawValue);
}
var hit = ray.origin + ray.direction * distance;
if (args.Source == this.thumb)
{
hit += this.thumbMouseOffset;
}
var closest = closestPoint(start, end, hit, true);
var lerp = (closest - start).magnitude / (end - start).magnitude;
var rawValue = minValue + (maxValue - minValue) * lerp;
return(rawValue);
}
private Vector2 raycast(Ray ray)
{
var corners = control.GetCorners();
var plane = new Plane(corners[0], corners[1], corners[3]);
var distance = 0f;
plane.Raycast(ray, out distance);
var hitPoint = ray.GetPoint(distance);
var relative = (hitPoint - corners[0]).Scale(1, -1, 0) / control.GetManager().PixelsToUnits();
return(relative);
}
