Circle

In the Create Features toolbar, click Circle to expand the drop-down list, where you can select Pick on CAD Model, Anchor, Fit, From Features and From Cross-Section creation methods.

Extraction​​

If the created feature is a reference feature, the corresponding measured feature can be extracted automatically or manually.

Note

Except for the From Features method, other creation methods support directly specifying features as reference features or measured features. If you define a feature as a reference feature, after importing at least one measurement model, you can extract the measured feature to generate feature pairs.

• Automatic Extraction: Enable Auto Extraction of Measured Values via Settings in the upper right corner of the software interface or check Extract Measured Feature in the creation window. The software will automatically extract the corresponding measured feature with default parameters after creating any reference feature.
• Manual Extraction: After creating a reference feature, right-click the feature group in the tree view on the left, select Extract Measured Feature and specify the measurement model to be extracted; you can specify Align Object in the extraction pop-up window.

Pick on CAD Model

Create circle features by directly clicking on the geometric features shaped as circles of the CAD model.

Note

• Before creating circle features using the CAD auto creation method, please import a reference model.
• This method supports specifying features as reference features or measured features.
• If you Define the Feature as Reference Feature, then you can extract the measured feature to generate feature pairs before importing at least one measured model.
• You can also use the CAD Auto Create method in the Assisted Feature Creation toolbar to automatically create features.

The steps for creating circle features through picking on CAD model are as follows:

1. Select Pick on CAD Model in the drop-down list of Circle to open the corresponding window.
2. Click on the highlighted circle feature of the model in the 3D scene to create, and define the feature as Reference Feature or Measured Feature in the window of Pick on CAD Model.
3. Click Confirm to create the reference circle or measured circle, which will be displayed in the feature module of the left-side tree view.

Anchor

Directly anchor points on the model to create circle features.

Note

Before creating plane features using the anchor method, please import a reference model or a measured model.

The steps for creating plane features through anchor are as follows:

1. Select Anchor in the drop-down list of Circle to enable the anchor tool.
2. Click to add 3 points on the model in the 3D scene and define the feature as the Reference Feature or Measured Feature; then click Confirm in the Anchor window to create the reference circle or measured circle, which will be displayed in the feature module of the left-side tree view.

Fit

Create circle features by fitting geometric features shaped as circles through selecting points on the mesh model.

Note

• Before creating circle features using the fit method, please import a reference model or a measured model (meshed).
• This method supports specifying features as reference features or measured features.
• If you Define the Feature as Reference Feature, then you can extract the measured feature to generate feature pairs before importing at least one measured model.

The steps for creating circle features through fit are as follows:

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1. Select Fit in the drop-down list of Circle to open the corresponding window.
2. Edit parameters including eliminate noise, as well as define the feature as reference feature or measured feature.
3. After completing relevant settings, you can select tools in the toolbar under the 3D scene, and select areas to be fitted on the model; then click Confirm to create the reference circle or measured circle, which will be displayed in the feature module of the left-side tree view.

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The introduction to toolbar as well as shortcuts is as follows:

Icon	Name	Description
	Sphere	Select mesh vertices on the surface of the mesh model to choose the fitting region. Note After enabling this function, other selection tools or the select through function can not be used.
	Magic Wand	Automatically select adjacent regions on the surface of the mesh model based on curvature. Note After enabling this function, other selection tools or the select through function can not be used.
	Select Through	Disabled by default, which means only visible surfaces can be selected; It can be enabled to select both the front and back regions of the model.
	Rectangle	Select / Deselect the data area in the form of rectangle.
	Polygon	Select / Deselect the data area in the form of polygon.
	Lasso	Select / Deselect the data area in the form of lasso.
	Brush	Use brush (support brush adjusting) to select / deselect the data area.

Function	Shortcut
Select	Shift+left-button
Deselect	Ctrl+left-button
Adjust the size brush	Shift+left-button

Note

For more shortcuts, please refer to > Shortcut Instructions in the top right corner of the interface.

From Features

Create new circle features based on existing features.

Note

• Before creating circle features using this method, please import a reference model or a measured model, and ensure that there exists the corresponding features.
• This method does not support defining features: If the selected feature is a reference or measured feature, the created new feature can only be a reference or measured feature.
• If a reference feature is created, then you can extract the measured feature to generate feature pairs before importing at least one measured model.

The steps for creating circle features from features are as follows:

1. In the drop-down list of Circle > From Features, select the corresponding creation method.

   Creation Method	Description
   Circle Average	Creates a new circle feature by calculating the average of the selected circles. Note If the selected features include reference features but some do not have measured features, the created feature will only have reference values without measured values.
   From Center Point	Creates a new circle feature using the selected 3 point, circle, sphere, or slot feature.
   From Cylinder	Creates 2 new circle features based on the selected cylinder, using the top and bottom faces of the cylinder. Note The normal of the newly created circle features is consistent with the normal of the selected cylinder; the hole information is consistent with that of the selected cylinder.
   From Cone	Creates 2 new circle features based on the selected cone, using the top and bottom faces of the cone. Note The normal of the newly created circle features is consistent with the normal of the selected cone; the hole information is consistent with that of the selected cone.
   Point and Line Direction	Creates a new circle feature using the selected point and line; the selected point is the center of the new circle, and the normal is consistent with the normal of the selected line.
   Cone and Cylinder Radius	Creates a new circle feature using the selected cone and cylinder, which is the cross-sectional circle of the cone at the position corresponding to the radius of the selected cylinder along its axis; the radius of this circle is consistent with the radius of the selected cylinder, and the normal is consistent with the normal of the selected cone; the hole information is consistent with that of the selected cone.
   Cone and Distance	Creates a new circle feature using the selected cone and the input distance, which is the cross-sectional circle of the cone at the specified distance along its axis corresponding to its vertex; the radius of this circle is consistent with the cross-sectional radius of the selected cone, and the normal is consistent with the normal of the selected cone; the hole information is consistent with that of the selected cone. Note Input numbers with up to 3 decimal places and a maximum of 13 digits before the decimal point in Distance from vertex; positive values indicate offset along the normal, while negative values indicate offset in the opposite direction.
   Cone and Radius	Creates a new circle feature using the selected cone and the input radius, which is the cross-sectional circle of the cone at its position along its axis; the radius of this circle is the input radius value, and the normal is consistent with the normal of the selected cone; the hole information is consistent with that of the selected cone. Note Input numbers with up to 3 decimal places and a maximum of 13 digits before the decimal point, and must be a positive number in Radius.
   Intersection of Plane and Cylinder	Creates a new circle feature using the selected cylinder and plane, which is the cross-sectional circle of the cylinder and the plane; the radius of this circle is consistent with the cross-sectional radius of the selected cylinder, and the normal is consistent with the normal of the selected cylinder; the hole information is consistent with that of the selected cylinder.
   Intersection of Plane and Cone	Creates a new circle feature using the selected cone and plane, which is the cross-sectional circle of the cone and the plane; the radius of this circle is consistent with the cross-sectional radius of the selected cylinder, and the normal is consistent with the normal of the selected cylinder; the hole information is consistent with that of the selected cylinder.

2. Select the corresponding created features, and click Confirm to create the feature, which will be displayed with the icon in the feature module of the left-side tree view.

From Cross-Section

Create circle features based on existing cross-sections.

Note

• Before creating circle features using this method, please ensure that there exists at least one created cross-section.
• This method supports specifying features as reference features or measured features
• If you Define the Feature as Reference Feature, then you can extract the measured featureeast one measured model.

The steps for creating circle features from cross-sections are as follows:

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1. Select From Cross-Section > Click on CAD section or Fit in the drop-down list of Circle to open the corresponding window.

   Click on the CAD section: After selecting the cross-section, click on the reference cross-section, and then define the feature as a reference feature or measured feature in the window.

   Fit: After selecting the cross-section, click directly on the reference or measured cross-section, and then set whether to remove outliers in the window, and define the feature as a reference feature or measured feature.

2. Click Confirm to create the reference circle or measured circle, which will be displayed in the feature module of the left-side tree view.

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