Fundamentals > Creo Parametric User Interface > The Analysis Tab > Analyzing Surfaces > To Display Shaded Curvature of a Surface
  
To Display Shaded Curvature of a Surface
1. On the Analysis tab, click the arrow next to Curvature and then click Shaded Curvature. The Shaded Curvature dialog box opens. Quick is the default analysis type. The Analysis tab is selected by default.
2. Click in the Surface collector and select one or more surfaces, quilts, solid geometry, or facets on which you want to perform the surface analysis. If you select a solid geometry, all solid surfaces in the part are analyzed. The selected entities are displayed in the Surface collector and the Color Scale dialog box opens.
3. Click in the Plane collector and select a reference plane. You can select a reference plane only for a Section type of plot.
The minimum and maximum shaded curvature values for each newly selected entity are displayed in the result area at the bottom of the Shaded Curvature dialog box. A shaded plot for the selected surface is displayed in the Creo Parametric graphics window.
 
* To clear the contents of the collector, right-click in the collector and click Remove on the shortcut menu. You can continue to select new surfaces in the Surface collector to create a new analysis.
4. Click OK to complete the analysis or Cancel to cancel the analysis. Alternatively, click Repeat to start a new analysis.
5. Optionally, to save the analysis or create an analysis feature, perform the following steps:
a. Select Saved from the list at the bottom of the Analysis tabbed page to save the analysis with the model, and to dynamically update and display the analysis while modeling or select Feature to create analysis feature.
 
* You cannot create an analysis feature for the Maximum type of plot.
b. If required, rename the analysis in the box adjacent to the list.
c. Click the Feature tab in the Shaded Curvature dialog box to change the feature options of the current analysis, if required. You can access the feature options only when you select a Feature type of analysis.
6. Click in the Color Scale dialog box to view the color scale options.
7. Click and move the pointer over the colored model to display the shaded curvature value of a colored surface in a tooltip at the pointer location. As you move the pointer over the colored model an indicator moves along the color scale indicating corresponding shaded curvature values and color at the pointer location on the color scale.
8. Select one of the following types of styles for the selected surface or surfaces:
—Displays the color plot with a linear scale.
—Displays the color plot with a logarithmic scale.
 
* The logarithmic type of plotting style is not available if both negative and positive shaded curvature values exist for the selected entities.
9. If required, click to restore the default values of the color scheme.
10. Click to switch between the continuous and non-continuous color display and customize the color plot by modifying the number of colors for a linear or logarithmic type of plotting style. For non-continuous color display you can specify the number of colors for the color scale in the Number box.
 
* You can modify the minimum and maximum values for color gradation in the Color Scale dialog box for both continuous and non-continuous color display.
11. Optionally, to customize your color plot, click one of the following types of color plots in the Color Scale dialog box:
—Displays a rainbow type of color plot for the selected surface or surfaces.
—Displays a three-color type of color plot for the selected surface or surfaces.
12. Click in the Color Scale dialog box to save the color scheme settings to a .txt file. Clicking opens the Save Color Scheme dialog box with color_scheme as the default filename in the File Name box. If required, specify a new name and click OK. By default the file is saved to the working directory.
 
* To load a color scheme click and browse to the.txt file that contains the color scheme settings.
13. Optionally, to customize or edit your analysis, perform the following steps:
a. Select one of the following types of plots in the Plot box:
Gaussian—Evaluates the curvature of a surface. Shaded curvature is the product of the smallest and largest normal curvatures for every point on a surface.
Maximum—Shows the largest normal curvature at every point on the surface.
Mean—Evaluates the continuity between surfaces.
Section—Displays the curvature of cross-sectional cuts parallel to a reference plane.
The following types of plots are available only when you are in the Reverse Engineering feature environment:
Compare Surfaces—Displays the minimum and maximum deviation between the surface and facet vertices.
Third derivative—Displays the percentage change in the curvature by using the shaded plot.
b. Select the Quality, Number, or Step as the sampling type in the Sample box. Quality is selected by default. Adjust the sample values using the slider or thumbwheel.
c. Update is selected by default. You can see the effects of your selections or changes on the analysis plot as you make them. Clear the Update check box to select or adjust multiple analysis options, and click Preview to view the result of the analysis. A shaded plot for the selected surface or surfaces is displayed in the Creo Parametric graphics window.