Use profile contours to either modify an existing relief or create a new mesh surface. Two open contours are specified as rails for the left and right edges of section contours to follow as they are used to create an extruded surface.
The image below demonstrates a surface created by sweeping a semi-circle and an angled contour along two straight rails.
This image demonstrates a more complex surface created by using curved rails and curved cross sections.
Activating the Sweep Two Rails command will open the sweep two rails dialogue. The provided parameters will change depending on whether creating a mesh, or using a relief modification application method.
Parameters
When the Sweep Two Rails command is activated the Relief Dialogue will activate and the wizard prompts will guide the creation of a swept surface.