public void RotateDelta_ForTrackball(DeltaInfo info)
{
var delta = info.End - info.Start;
if (delta.Length == 0)
{
return;
}
matrixTransform.Rotate(new Vector3D(delta.Y, delta.X, 0), delta.Length);
}
public void RotateDelta(DeltaInfo info)
{
var delta = info.End - info.Start;
var deltaLength = delta.Length;
if (deltaLength == 0)
{
return;
}
var distance = GetDistance((Vector)info.Start, delta);
delta *= AxisXYLength / deltaLength;
matrixTransform.Rotate(new Vector3D(delta.Y, delta.X, distance), AngleRatio * deltaLength);
}