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interpolate t=0.000 => [-0.7437,+0.1118,-0.5367]
interpolate t=0.010 => [-0.7379,+0.1087,-0.5396]
...
interpolate t=1.980 => [-0.9562,+0.5187,+0.3067]
interpolate t=1.990 => [-0.9718,+0.5308,+0.3115]
interpolate t=2.000 => [-0.9876,+0.5432,+0.3162]