Orthographic and perspective views: general concepts

The following terminology is used when describing projection modes:

• Camera — the position of the observer or viewpoint
• Target — the point observed or center of focus, also used as the rotation center for dynamic rotations.
• View direction — the line from the camera to the target.

The program constructs bidimensional (on-screen) images of three-dimensional models as either orthographi (axonometric) or perspective projections. The following illustrations show the difference between an isometric view (a form of orthographic view) and a perspective view.

Isometric	Perspective
An orthographic view is created by projecting a band of lines parallel to the view direction, through the boundaries of the model, and onto the projection plane	A perspective view is created by projecting a band of lines, all of which originate at the camera, through the boundaries of the model, and onto the projection plane

You can display models as either orthogonal or perspective views by selecting the Orthogonal or Perspective options.
Alternatively, you can right-click in an empty zone of the Graphics Area and select ViewOrthogonal Projection or View Perspective Projection.