# Project Curve

The drawn curve is projected onto the model surface to generate a space curve; or the sketches on two intersecting datum planes, respectively, project the surfaces in their respective vertical directions to intersect to generate a space curve

Click to enter the projection curve command, Its command interface is shown in the figure below.

There are two ways to generate projection curves: Sketch on Surface and Sketch on Sketch.

# Sketch on The Face

The drawn curve is projected onto the model surface to generate a space curve, with each control described below:

Sketch： Only one projected sketch can be selected, and the sketch can contain only one open or closed loop.

Note：

Projection of the sketch line on the face must intersect with the face.

Projection surface： Multiple elements can be selected, which can be planes, surfaces, or planes.
Reverse： The projection direction can be switched with this option.

Example： Create a surface and sketch in a viewport, as shown in the following image:

Select the sketch to project on the surface, the effect is as shown below:

# Sketch On Sketch

Sketches on two intersecting datum planes, projecting surfaces in their respective vertical directions intersect to generate a space curve.

Its controls are described as follows:

Sketch： Select the sketch on two intersecting planes.

Note：

Straighten the Outlines of two sketches so that when they are projected perpendicular to the datum of the sketch, their implied surfaces will intersect, resulting in intersecting curves.

Example： Create two sketches on the upper view plane and the front view plane, as shown in the following image:

Select these two sketches, and the preview is shown below:

Click【OK】to confirm the operation, and click【Cancel】to exit the operation.