This function allows the user to change the light property for gray shading. This function only works when the SHADE option is turned on. The program displays the LIGHT PROPERTY control window, as shown in Figure 4.5.1.

Figure 4.5.1  Light Property Control Option Window

1.       LIGHT PROPERTY

This function allows the user to adjust the brightness of the part by adjusting the setting of Ambient, Diffuse, and Specular light. This function only works when the SHADE option is turned on. The user may click and drag the slider in each light property to adjust the light property in order to reach the optimum display effect.

l  AMBIENT

Ambient light is a uniform light source coming from all directions to the part.

l  DIFFUSE

Diffuse light is a parallel light source coming from the light source direction. This light is reflected evenly on the part surface.

l  SPECULAR

Specular light is similar to the diffuse light, except the light is reflected sharply in a particular direction.

l  RESET LIGHT

Reset the light property to the default setting.

2.       LIGHT SETTING LIST

This function is used to display the defined light property in the list.

3.       SAVE LIGHT

This function is used to save the defined light property, and add it to the list.

4.       DELETE

This function is used to delete the unnecessary light property from the list.

5.       RECALL LIGHT

This function is used to recall light property. Select the desired light property in the list, and click this button to recall it.

6.       IMPORT LIGHT

This function is used to import the saved light property setting file to the light setting list.

7.       EXPORT LIGHT

This function is used to save the defined light property in *.lgt file format.

8.       EXIT

Close the Light Property window and exit the function.