<< Click to Display Table of Contents >> Navigation: MotionDesigner Reference & User Interface > SEGMENT EDITOR > Segment Editor: SegmentRange 
Many Traditional MotionLaws have SegmentRange parameters. The SegmentRange parameters edit at what phase to start and end the mathematicalfunction. Default SegmentRange :
SegmentRange parameters do NOT change the SegmentWidth. One application of SegmentRange is to design Asymmetrical Motions  see below. 

Example The three images below show the acceleration graph of a Modified Sinusoid motionlaw with different Segment Ranges. Note: the SegmentWidth does not change 

Image 1 Modified Sinusoid MotionLaw. SegmentWidth = 90º


Image 2 SegmentWidth = 90º


Image 3 SegmentWidth = 90º


See also: Segment Editor: SegmentWidth, Segment Editor: Parameters 
Example: you want a tool to accelerate quickly and then decelerate more gradually, or vice versa. Symmetric Segments  the crossover is at the midpoint of a Traditional MotionLaw. Asymmetric Motions  the crossover is earlier or later than the midpoint of the Segment. Use Asymmetric Motions to modify the timing of acceleration and deceleration.
You can model an asymmetrical motion with two segments that have the same motionlaw. This example MotionLaw is a Modified Sinusoid. You would usually specify this with one ModSine segment. To do an Asymmetric Segment, we actually use two segments.

Orange Line graph  is SymmetricalSymmetrical ModSine MotionLaw : λ = 0.5 Segment 1 Machine angle  Xaxis: 0  180º ( 0  0.5 of total duration) Displacement  Yaxis : 0  50 units Segment Ranges = StartRange = 0 and End Range = 0.5. Segment 2 Machine angle  Xaxis: 180  360º ( 0.5  1.0 of total duration) Displacement  Yaxis: 50 100 units Segment Ranges = StartRange = 0.5 and EndRange = 1. Black Line graph  is Asymmetrical Asymmetrical ModSine MotionLaw : λ = 0.25 Crossover @ 0.25 = 90º machine angle. Segment 1: Machine angle  Xaxis: 0  90º (0  0.25 of total duration) Displacement  Yaxis: 0  25 units Segment Ranges = StartRange = 0 and End Range = 0.5.. Segment 2: Machine angle  Xaxis: 90  360º (0.25  1.0 of total duration) Displacement Yaxis: 75  100 units Segment Ranges = StartRange = 0.5 and EndRange = 1. Characteristics Values of Asymmetrical MotionLaw. Maximum Velocity : Asymmetrical Velocity = Symmetrical Velocity. Maximum Acceleration: Segment 1 : Maximum Acceleration: Segment 2 : 