Bentley LumenRT Help

Sun and Atmosphere

Shown Below dialogue setting box of Sun And Atmospheres:
SettingDescription
Sun Position Sets the sun position based on a geo-location (time, date, world location) or a vector direction (pitch and azimuth). Clicking the little globe icon in the upper right of the dialog toggles between geo-location and vector modes. With the vector direction, the fields are as follows:
  • Pitch and Azimuth - Sets the position of the sun manually by degrees.
  • Date - Set the date for the image.
  • Season -
  • Year - Set the year for the model.
HRD Map
  • Rotation slider
  • Brightness slider
WEATHER
  • This sets the amount of clouds and the amount of haze in the atmosphere. Click the randomize button to the far right to randomize this setting. Use the slider to move from Blue Sky to Overcast and the air can be any degree between Clear and Hazy.
  • Aerial slider
  • Disable clouds shadows: you get the option to trun off the clouds Shadows.
CLOUDS Adjusts the direction and speed of clouds. Click the button to the far right to randomize the cloud cover.
  • Direction - Sets the direction of the clouds. Click the button to the right of Clouds to change the direction in the image.
  • Speed - Sets the speed of the clouds.
WIND IN PLANTS You can effect the plants by wind, by setting the intensity from Still to Windy.
BIRDS Adjust the slider to indicate the number of birds to appear in the sky from none to many.
LOCATION If you select the geo-location option, the following world map is displayed.
Latitude and Longitude as well as Time Zone can be set manually. You can allow for beginning of spring and fall as well as Daylight Saving Time. You can also move the red dot to the general location you need.
After you select the location on the map, the Atmosphere Dialog displays some new fields at the top
.
  • Time - Sets the time in the image.
  • North - Set the degree of North.
  • Date - Set the day of the year. If locked, a Season field displays so you can set from spring (far left) to winter (far right).