Tutorial 2: Editing Flexible-Polynomial - Basic Level
Contents
Edit Flexible Polynomial Motion-Law - Basic-Level
The Flexible-Polynomial Motion-Law is good for most motion design requirements.
The purpose of this tutorial is to learn how to use the Blend-Point Controls when the segments in the motion are all Flexible-Polynomial motion-laws.
After this tutorial, you should be able to use the Blend-Point Editor to edit Flexible Polynomial segments, at a basic level.
Recommended: It is best not to mix 'Flexible Polynomial' with 'Traditional' Motion-Laws.
It is recommended [but not essential] that you use segments that are:
| • | ALL Flexible Polynomials Motion-Laws |
or
| • | ALL Traditional [also called 'Standard'] Motion-Laws |
Video of this Tutorial
 How to...Edit a Motion with Flexible-Polynomial Segments. |
Important information to remember
The Blend-Point Editor can EDIT ONLY the:
You cannot edit the:
To edit the end of the Selected-Segment, you muse click the 'Next-Segment'. As soon as you click the 'Next-Segment', it becomes the Selected-Segment! |
The Default Motion has four Flexible Polynomial Segments
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Note: Only the bottom graph displays the X-axis values. All the motion-derivatives [P.V.A.J.] use the same X-axis values. Make the second Blend-Point the Active-Blend-Point.
The second segment Terminology:
You can look at the Motion-Law Selector to confirm that the RED Selected-Segment is a Flexible-Polynomial. |
Edit the X-axis Value of Blend-Point #2
 Open Blend-Point Editor icon |
Click the Blend-Point and Segment toolbar > Edit Blend-Point icon
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In the Blend-Point Editor - see image below - you can see two Orange Separators. You edit the X-axis value of a Blend-Point in the X-axis Values separator. You move the Blend-Point to the left or the right as you edit the X-axis parameter in the data box. The Blend-Point 'slides' across the motion, so that the Motion-Width does not change. |
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 The X-axis value in the Blend-Point Editor and the X-axis value of the Blend-Point motion graph. |
The image shows the virtual connection between the X-axis value in the Blend-Point Editorand the Blend-Point position along the X-axis in the motion-graph area. |
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Edit the Y-Value Position of Blend-Point #2
 Edit Position of Blend-Point |
In the Blend-Point Editor -you will see you can edit the Position Values. This is where - in the Position Graph - the Blend-Point is at the start of the Selected-Segment. To move the Blend Segment up or down, that is to edit the Position of the Blend-Point, you must edit the Position value in the data box. |
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Use the spin-box, to edit the Position Value from 90º to 70º Control Buttons in the Blend-Point Editor.
Thus, we can edit its value. It controls the Position at the end the Previous-Segment.
Because the Match Control Button is active, the Start Position
With the Flexible Polynomial Motion-Law, the Match Control-Buttons are available for each Motion-Derivative: When the Match-Control Button of a motion-derivative is active, the motion-value of the motion-derivative at the ... ... Start of the RED Selected-Segment ... ... is forced to become equal to the ... ... End of the Previous-Segment. |
Edit the Velocity Y-Value of Blend-Point No2
 Edit Velocity of Blend-Point |
In the Blend-Point Editor
When the Match Control Button is active, the Start Velocity The Start-Velocity value is Read-Only. |
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Use your mouse to click on the left or right spin box button at the right of the End Velocity box You can see in the velocity motion-graph that the:
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Edit the Acceleration Y-Values of Blend-Point No2
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In the Blend-Point Editor
When the Match Control Button is active, the Start Acceleration The Start-Acceleration value is Read-Only. |
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Use your mouse to click on the left or right spin box button at the right of the End Acceleration box You can see in the acceleration motion-graph that the:
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