interpolateRotations method

dynamic interpolateRotations(Map curve)

Implementation

interpolateRotations( Map curve ) {

	for ( var i = 1; i < curve["values"].length; i ++ ) {

		var initialValue = curve["values"][ i - 1 ];
		var valuesSpan = curve["values"][ i ] - initialValue;

		var absoluteSpan = Math.abs( valuesSpan );

		if ( absoluteSpan >= 180 ) {

			var numSubIntervals = absoluteSpan / 180;

			var step = valuesSpan / numSubIntervals;
			var nextValue = initialValue + step;

			var initialTime = curve["times"][ i - 1 ];
			var timeSpan = curve["times"][ i ] - initialTime;
			var interval = timeSpan / numSubIntervals;
			var nextTime = initialTime + interval;

			var interpolatedTimes = [];
			var interpolatedValues = [];

			while ( nextTime < curve["times"][ i ] ) {

				interpolatedTimes.add( nextTime );
				nextTime += interval;

				interpolatedValues.add( nextValue );
				nextValue += step;

			}

			curve["times"] = inject( curve["times"], i, interpolatedTimes );
			curve["values"] = inject( curve["values"], i, interpolatedValues );

		}

	}

}