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The arbitrary law of modifying a parameter |
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The values of some surface parameters can change according to an arbitrary law y=f(x) defined by a curve in the sketch.
To define the law, a sketch containing a curve/chain of curves with the Main style is used. The curve law is defined in the sketch coordinate system.
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Using an arbitrary law for certain surfaces has specific features: •if the law is used to determine the slope angle of the section triangle sides of the surface of the conical section or the inclination angle of the cut-segment of a ruled surface (by curve and direction or by curve and surface), then the Y coordinate of the point on the curve sets the value of the angle in degrees. •If the law is used to determine the curve shape, then the Y coordinate of a point on the curve sets the value of the coefficient and should be in the range from 0.0001 to 0.9999. |
The elements for defining an arbitrary law are present on the Parameter Panel if the Function Type button is pressed in the group and the By Curve Law button is pressed 
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To set the law of modifying a parameter, specify the required sketch in the Design Tree or in the graphic area of the model.
If there is no suitable sketch in the model, you can plot it without interrupting the command execution. To do this, click the Create Sketch 
button located on the right side of the The Law field. This will start the process of sketch placement, and then the system will switch to the Sketch mode for creating geometry. Perform the steps necessary to build and complete the sketch mode. The created sketch will be automatically selected.
After the sketch is selected, its name will appear in the The Law field of the Parameters toolbar. Objects of the sketch are highlighted in the graphic area. The phantom of the surface being created will be rearranged.
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You can also edit the selected sketch if required. To do this, click the icon |
