Analyzing Using Porcupine Curvature

Porcupine Curvature Analysis lets you create a visual representation of the point, tangent, and curvature continuity of curves and surfaces.

Before you begin: Open a 3D shape.
  1. View the quick analysis on a curve:
    1. In the Type area, select Radius.
    2. Select the Quick tab.
    3. In the Radius box, type the value or use the arrows to change the value.
    4. Select a curve.
    5. In the Type area, select Curvature.
  2. View the comb analysis on a surface and then on a curve:
    1. Select the Full tab.
    2. Select a surface.
    3. Select a curve.
    4. In the Type area, select Radius.
  3. Adjust the characteristics of the porcupine comb:
    1. In the Type area, select Curvature.
    2. In the Density area, adjust the number of spikes in the comb by using either of the following methods:

      • Type the value or use the arrows to change the value.
      • Click X2 and /2.

    3. In the Amplitude area, adjust the length of the spikes in the comb using either of the following methods:

      • Type the value or use the arrows to change the value.
      • Click X2 and /2.

  4. Click Min value and/or Max value to display the minimum or maximum points or both.
  5. View a curvature diagram:
    1. In the Diagram area, select Display diagram window .
    2. Move the cursor over the porcupine comb in the work area.
    3. Right-click a curve in the 2D Diagram and choose one of the following options:
    4. When you have finished with the 2D Diagram, click the x in the top right corner to close.
  6. Click OK.

 

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