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Creates a 3D object between two 2D objects that lie on different planes. The planes do not have to be parallel.
Both profile objects must be the same type and must have the same number of vertices. For example, you can create a prism between two circles or two rectangles, but not between a circle and a rectangle. Splines and Bezier curves must have the same number of control points.
(If you want to use more than two profiles, or profiles of different type, see Profile Objects.)
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Note: A prism is considered to be a Lofting object, and its Properties contain a Lofting Shape page. For details, see Profile Objects.
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- If you want to select only simple (single-object) curves, make sure Use Compound Profile is not selected. If you want to use compound profiles, see Profile Objects.
- Select the two 2D objects.
Polyline to polyline
Spline to spline
You do not have to select closed 2D objects. If you use open objects, a 3D surface will result.
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sm with Compound Profiles*
A compound profile is an open or closed chain of connected curves or lines. You can use compound profiles when you do not want to create a polyline, or convert a chain into a polyline. - Make sure Use Compound Profile is selected.
- Select the first compound profile, which is automatically identified as a chain. To deselect any curve in the chain, select it again (it will turn green). In this example, Profile 1 is a series of connected lines, not a polyline.
- When the profile is selected, click Finish Selection of Profile, or select it from the local menu.
- Select the second profile using the same steps.
- When you finish the second profile selection, the prism is created.
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This tool is handy if you have a single profile that you want to sweep over multiple paths, or rails. In this example, there are three paths for the same profile:
Here are the results:
If you used a Compound profile for the profile, you will be able to modify the resulting 3D object by modifying the original profile object, or by moving the base point object. If you used a Compound profile for the path, you will be able to modify the resulting 3D object by modifying the original path object/s.
The sweep path does not have to be 2D. The path in this example was created using 3D Spline by Fit Points.
This is the result:
Local menu option
Rigid Sweep: Keeps cross-sections of the solid parallel to one another along the entire path. See explanation under Profile Objects.
Compound Profiles as Paths
To use a compound profile as a path
Also see Profile Objects.
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evolve
Creates a 3D object by revolving a 2D object about a revolution axis.
By default, the profile will be revolved 360 degrees, but you can change this angle or create a spiral. See
Profile Objects.
- If you want to select only a simple (single-object) curve, make sure Use Compound Profile is not selected. If you want to use a compound profile, see Profile Objects.
- If you want to select a line as the axis of revolution, make sure Select Revolve Axis is active.
- Select a 2D object to revolve.
- Select two points of a revolution axis, or, if Select Revolve Axis is active, select the axis line..
The revolved shape is created.
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- If you want to select only simple (single-object) curves, make sure Use Compound Profile is not selected. If you want to use compound profiles, see Profile Objects.
- Select the profiles, in the desired order. Selection order is important
- Select Finish from the local menu, or double-click on the last profile, to create the loft.
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