The information in this article applies to:
How can I show where the shadows fall in floor plan view?
By placing a Sun Angle line, you can create a shadow to be displayed by a building both on floor plan and in rendered views. The length and angle of the shadow can be made to simulate how a real shadow might be cast by specifying the location, date, and time in the Sun Angle's specifications.
A Sun Angle arrow is a marker that displays in floor plan view and indicates the angle of the sun at a specific time and location on the Earth. Multiple Sun Angles can be created in floor plan view, each with different specifications.
Sun Angles are parallel light sources. Their location and direction are defined per plan. Place a North Pointer to accurately define the Sun's location relative to the model.
If no Terrain Perimeter has been created, shadows fall on an imaginary plane at height of 0", the default height for the first floor.
If a Terrain Perimeter exists, shadows are modified to indicate where the real shadow would fall on the actual terrain.
Multiple Sun Angles can be placed in the same plan. This allows the simultaneous display of shadows cast at different times in floor plan view, however only one will display in camera views.
You can specify different line colors and/or fill styles for shadows cast by multiple Sun Angles in the Sun Angle Specification dialog.
To control whether to use the Default Sun, or a specific Sun Angle, 3D> Lighting> Toggle Sunlight controls the display of either the Default Sun or the current Sun Angle as a source of light.
Once a sun angle has been created, shadows can be displayed.
If shadows are not being displayed, select the appropriate Sun Angle, click the Open Object edit button, and on the Lighting Data panel of the Sun Angle Specification dialog, make sure that Casts Shadows is checked.