Direction of Sunlight in a View with Shadows

When you select shadows for an elevation view, the Sun shines from above and to the right as a default. When using Wireframe drawing method, you can change the direction of the sunlight by editing the shadow_gamma and shadow_beta keywords in the BDSXX keyword group:

• shadow_gamma - this keyword defines the rotation around the global Z axis in relation to the view's direction of view. A positive value rotates counter-clockwise. The allowed values are -90 ... 90. The default value is shadow_gamma= 45.
• shadow_beta - this keyword defines the angle from the horizontal. The allowed values are 0 ... 90. The default value is shadow_beta= 30.

Note

• For large and complex buildings, turning on shadows slows down the generation of the views.