Timeline for Meaning of Sun Lamp Size?
Current License: CC BY-SA 3.0
13 events
| when toggle format | what | by | license | comment | |
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| Jan 14, 2016 at 0:42 | history | edited | user1853 | CC BY-SA 3.0 |
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| Jan 14, 2016 at 0:20 | comment | added | J Sargent | Ok, I think that the distinction that it is not physically based is plenty. Your illustrations show what is being replicated quite well. | |
| Jan 14, 2016 at 0:18 | comment | added | user1853 | @NᴏᴠɪᴄᴇIɴDɪsɢᴜɪsᴇ Last three images I put it there just for illustration purposes. Feel free to edit, delete or correct what you need. | |
| Jan 14, 2016 at 0:17 | comment | added | J Sargent | But not like the physical method you show, rather a mathematically determined scattering based on the direction of the sun lamp. It is equal at any infinite point, while a planet like sun would actually have a circular effect. I do agree that is what the method is derived from in order to approximate though. | |
| Jan 13, 2016 at 22:11 | comment | added | user1853 | @NᴏᴠɪᴄᴇIɴDɪsɢᴜɪsᴇ in theory yes, but changing the size does affect the shading... | |
| Jan 13, 2016 at 21:46 | comment | added | J Sargent | This answer is almost certainly false, as according to the devs, a sun lamp is infinitely far away, thus any change to size has no effect. It has to be a more mathematical approach derived from the vector of the incoming ray and the distance to the place where the shadow is cast. | |
| Jan 10, 2016 at 22:51 | vote | accept | Kaia | ||
| Nov 8, 2019 at 10:27 | |||||
| Jan 10, 2016 at 22:32 | history | edited | user1853 | CC BY-SA 3.0 |
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| Jan 10, 2016 at 22:24 | history | edited | user1853 | CC BY-SA 3.0 |
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| Jan 10, 2016 at 22:18 | history | edited | user1853 | CC BY-SA 3.0 |
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| Jan 10, 2016 at 22:12 | history | edited | user1853 | CC BY-SA 3.0 |
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| Jan 10, 2016 at 22:10 | comment | added | Kaia | I know that increasing the size of a sun lamp makes softer and wider shadows. My question was more intended as "What does the size mean". In your example, the final sun is set to 50 cm. The sun lamps are said in documentation to be treated as infinitely far away. A 50 cm object at infinite distance clearly doesn't even appear, so the renderer must be doing something different - the size field must have a different meaning than just the size. But thanks for the answer, it's a good illustration of the concept. | |
| Jan 10, 2016 at 22:07 | history | answered | user1853 | CC BY-SA 3.0 |