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- You can create a series of contour lines on any NURBS surface in Rhino.
- Begin by selecting the surface on which you wish to draw contour lines.
- Select Curve>Curve From Objects>Contour (or type “contour” in the command line).
- Now select the contour plane base point. This is typically one of the bottom corners of the NURBS surface.
- Next, select the direction perpendicular to the contour points.
- Note: For contours running parallel to the x-axis, select a point on the y-axis. For contours running parallel to the y-axis, select a point on the z-axis. For contours running vertical, switch views to the right or front and select a point along the z-axis.
- Now you will need to select the distance between contours. You can select this value on screen or you can type in the interval of the contour.
- Hit enter/return and Rhinoceros will generate new contours based on your surface.
- Note: While the contours are still selected, I recommend changing them to a new layer by right clicking on the new layer and selecting “Change Object Layer”.
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