8.12.10 The Lighting Control Dialog

GraphRef-LightControl-Dialog

The lighting control dialog is an implement of the Lighting tab. To bring up the dialog, activate a 3D openGL graph and click the Lighting Control Dialog button in the Styles toolbar.

The Source Direction Tab

To control the direction of lighting source, you need to:

Click on the graphical control button and move it arbitrarily.

or

Enter number of angles of horizontal and vertical direction.

The default position of light source is 0 at horizontal and 90 at vertical.

The possible range of light source is 0 to 360 for horizontal and 90 to -90 for vertical.

Horizontal angle equals 0 is equivalent to that equals 360.

The Properties Tab

Diffuse

To change the effect of diffuse light, you can

1. Choose a light color.
2. Select an intensity value, range from 0 - 100.

A preview effect combined of color and intensity is shown in the right simultaneously with the change of settings, also the effect is shown real-time in the original graph.

The default color is White and default intensity is 100.

Specular

To change the effect of specular light, you can

1. Choose a light color.
2. Select an intensity value, range from 0 - 100.
3. Modify the shininess, range from 0 - 128.

The default light color is Black, intensity of 0 and shininess of 64.