The Options dialog, Lighting option provides light sources for
illuminating graphics.
To open this dialog, select Options from the Tools menu, and then
click Lighting on the tree. Figure 1. Options dialog – Lighting
The controls in this dialog specify the position, shininess and speculiarity of the light.
Any combination of light properties may be used to light the graphic. Select the Preview
check box to immediately update the graphic when manipulating light controls.
Direction
The direction of the light is defined by moving the
horizontal and vertical slide controls.
Specular
The specular color defines the color reflected back
on shiny surfaces. Moving the slider bar from low to high controls the degree of
shininess. To disable specular highlighting, set the specular color to black.
Color
To change the color of the graphic, click on a color box, select a new color
from the palette, and click OK.
Shininess
Use the slider bar to set the shininess (0-128).
Preview
Activate the check box to preview the changes in the
graphics area.
