We will now explore two viewing options unique to the Perspective window – rendering and rotation.

 View a video that will show you how to rotate the model in the Perspective view window using the slider bars and free rotate. The video also shows how to render the model and toggle different light sources. [Web | Disk]

Render

Ø  Click within the Perspective window to make it active or use the Windows menu or toolbar.

To get a realistic 3-D representation of the model as a solid body, you can render the surface.

Ø  Go to Display | Render and ensure that the dialog box appears as below before clicking OK:

To maximise the light incident on the surface,

Ø  Activate the four light sources in the Render toolbar:

The model rendered in Perspective window with all four light sources switched on.

Note

Rendering only works in the Perspective window. The Display | Render as well as the Render toolbar are disabled when the Perspective window is not active.

The Rotate function lets you freely rotate a design in the perspective window.

Ø  Select View | Rotate or use the  toolbar button from the View toolbar

Ø  Move the cursor to a location in the Perspective window and press the left mouse button

Ø  Keeping the left button depressed, rotate the image by moving the mouse around

The rotation is performed by projecting the cursor movements onto a virtual sphere in the perspective window centred on the centre of the surface – essentially the rotate function performs like a virtual trackball. Generally speaking, moving the mouse left and right rotates the model about a vertical axis while moving the mouse up and down rotates it about a horizontal axis.

Ø  Release the left mouse button to exit the Rotate mode.

To rotate the model with greater accuracy and control, you can use the pitch, roll and yaw slider bars on the sides of the perspective window.

Ø  “Grab” the yaw control block within the yaw scale by clicking it, and while still holding the left mouse button, drag it over the 0 (degrees) marker. 

Ø  In the same way, set the pitch and roll to 0

You should end up with something like this:

1 = Pitch, 2 =Yaw, 3 = Roll

Continue with the section on Displaying Contours.