How to do the projection of CAD

Projection, this is related to more mathematical problems of the skills, as a novice, master is a certain degree of difficulty. In order to facilitate the study, this time by explaining an example to answer how CAD projection this problem.

Example: As shown in the following illustration, you now need to project a segment, or a point, onto the xy surface. (XY can be any space surface)

Solution Idea:

1, press the shortcut key ctrl+1, the property box open, select the object, that is, need to be projected objects, so you can see the object's XYZ coordinates, the following can be set to different coordinates to get different surface projection, we need xy surface projection: z=0;

2, if you want to retain the original object, you can first copy the original object, of course, can also be multiple objects simultaneously.