V-Ray 8.17 [sun]

“Adding a Sun System in V-Ray”

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V-Ray Version 3.6+:

  1. Open a Rhinoceros file in which you wish to add a Sunlight System.
  2. Open the Sun Creation Panel from the V-Ray toolbar.
  3. In the Sun Angle Calculator window that appears, uncheck manual control.[Premium Content - Login] [Membership Options]
  4. Scroll down to the "Location" section and expand it.  Use the "Search" field to find a nearby location to your site (in this case San Francisco).  Select the nearby city form the list.  It should be highlighted in blue after you click on it.[Premium Content - Login] [Membership Options]
  5. Now expand the "Date and Time" drawer and choose a desired date and time.  Make sure to check or uncheck the "daylight saving" option when applicable.[Premium Content - Login] [Membership Options]
  6. Click "OK" when you are finished setting up the sun.  Now look at your command prompt, it is expecting you to place a new sun.  Click on a convenient place in your  model for the sun or type 0,0,0 to place it at the origin.
  7. If you need to edit the day, time or location of the sun, you can select the sun from your scene and modify it using the "Edit" button in the light properties window. [Premium Content - Login] [Membership Options]

V-Ray Version 1.5:

  1. Open a Rhinoceros file in which you wish to add a Sunlight System.
  2. Click on the sunlight system button in the V-Ray toolbar. (Shown in red to the below)[Premium Content - Login] [Membership Options]
  3. With the Sun Angle Calculator Dialog box open, uncheck the Control Sun Manually button in the Sun Options rollout.[Premium Content - Login] [Membership Options]
  4. Scroll down to the Location rollout and specify your location. You can search for a city or you can specify a latitude and longitude of your location.[Premium Content - Login] [Membership Options]
  5. With the location established, move to the Day and Time rollout and specify the day, month and year as well as the time of day.[Premium Content - Login] [Membership Options]
  6. When you have finished, click “Ok.” Rhinoceros will ask you for an insertion point for the sun. The default value is 0,0,0. With this default, north will be along the y axis and east will be along the x axis.
  7. After the sun has been created, you can edit the sun properties by clicking on the sun and navigating to the light section of the properties page.
  8. If you click the modify button, you can adjust the day, month, year, time & location. (Follow steps 3-5 above).
  9. You can adjust the haziness of the sky by modifying the Turbidity value [2 = clear day, 5 = slightly hazy, 8 = very hazy or smoggy].
  10. You can also adjust the color of the sun itself by changing the ozone value [0 = yellowish sun, 0.5 neutral sun, 1 = blueish sun].


Comments (2)

  1. Great Information, really helpful, I have a question concerning the Sun when rendering, I want to actually see the sun in the rendering, but i can’t find it except when using HDRI, only on the sphere tho.

  2. You wont be able to see the sun when rendering (just like you can’t see any V-Ray lights). If you want to mimic the sun, you could place a sphere with an emissive material on it in the scene or you could rely on the HDRI background image to show the sun. Sorry I took so long to respond, I just saw this comment in the moderation list.

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