Basic Coordinate System

The cursor can be moved in the working window by using the mouse. In the model window, the cursor moves on the level of the viewing direction normal, where the depth is determined by the last point selected. The exact location of the cursor in the working window is determined by coordinates. Two coordinate systems are used: an absolute coordinate system and a relative offset coordinate system.

Absolute origin

In an absolute coordinate system, the model window origin is 0x,0y,0z and the drawing window origin 0x,0y regardless of the cursor location. The absolute origin is marked by in the drawing window and by in the model window.

The X,Y,Z coordinates indicate the distance between the cursor and the absolute origin. Click the status bar to display the coordinates X,Y,Z in the right end of the status bar.

Local origin

The origin of a relative coordinate system, or the local origin, is located in the point last selected. In other words, the location of the local origin changes as points are selected.

The coordinates dx,dy,dz show the distance of the cursor from the point last selected. The status bar displays these coordinates by default. You can view the coordinates X,Y,Z and dx,dy,dz in turns by clicking the status bar.

Setting the Local Origin
Defining Coordinates