Product Chat / How to change the position of the Sun?

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ololo_11
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Joined: 21st Dec 2012
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Posted: 13th Dec 2015 01:14
Hi all! Is there a way to change the position of the sun? I tried to change setting in the "Skyspec.txt" , but the shadows always fall exactly the same...
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Pirate Myke
Forum Support
14
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Joined: 31st May 2010
Location: El Dorado, California
Posted: 13th Dec 2015 01:45
Open the skyspec.txt file in the skybank folder you are using.

Change this line to your values.
SunDirection = 100,100,100

Equates to
SunDirection = x,y,z position

But Not sure if this will change the shadows direction, I believe it just rotates the sky so you can line up your sun with the shadows.

This is still very much a WIP feature.
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, 2400 Mhz, 4 Core(s), 4 Logical Processor(s), 8gb RAM, Nvidia gtx660, Windows 7 Pro 64bit

OldFlak
GameGuru TGC Backer
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Joined: 27th Jan 2015
Location: Tasmania Australia
Posted: 13th Dec 2015 04:50 Edited at: 13th Dec 2015 04:55
Hi @ololo_11, the only values that work in skyspec file currently are
SunColor: this will affect the terrain color.
SunRotation: this will of course rotate the skybox to the given setting.

SunDirection and SunStrength do nothing at all at present.

All you can do at the moment is set the SunRotation value so that the shadows fall in line with the position of the sun in your skybox, and this of course limits the position you place the sun when developing any skybox media. However the shadows will always fall in same direction and will always be the same length.

This is something that should be addressed as a bug imo - not a feature - since it will require all skyboxes to be updated in the future when all properties in the skyspec file are implemented.

OldFlak...
Intel(R) Core(TM) i3-4160 @ 3,60GHz. 8GB Ram. NVidia GeForce GTX 750. Acer 24" Monitors x 2 @ 1920 x 1080. Windows 10 Pro 64-bit.
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LeeBamber
TGC Lead Developer
24
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Joined: 21st Jan 2000
Location: England
Posted: 14th Dec 2015 10:43
Yes, the SunDirection will not change the position of the sun or the direction the sun shadow is cast from and is a hard coded value right now. It was disabled as we saw a LOT of strange artefacts as the shadow moved about. I will be re-instating this when the new DirectX 11 conversion begins which will have a much better shadow system, which of course will be required for a proper day/night cycle system (and custom sky dynamics).
PC SPECS: Windows 8.1 Pro 64-bit, Intel Core i7-5930K (PASSMARK:13645), NVIDIA Geforce GTX 980 GPU (PASSMARK:9762) , 32GB RAM

OldFlak
GameGuru TGC Backer
9
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Joined: 27th Jan 2015
Location: Tasmania Australia
Posted: 14th Dec 2015 10:47
Hi Lee, thanks for the update on this topic. look forward to DX11 update and the many cool things too come for the GG.

Thanks for great software!

OldFlak....
Intel(R) Core(TM) i3-4160 @ 3,60GHz. 8GB Ram. NVidia GeForce GTX 750. Acer 24" Monitors x 2 @ 1920 x 1080. Windows 10 Pro 64-bit.
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