New Parts for LGEO Library


Re: New Parts for LGEO Library
The problem comes with your area lights.

I don't pretend to know everything with PovRay but this is what I think:

Apparently your light sources are too much close to the part. Area lights shouldn't be used exactely as conventional point lights.
Looks like the area lights are located inside the part, therefore the mesh is illuminated from the inside and the normals cannot do their job.

This is what I get with your settings:
[Image: 2m4po9h.png]
Here there are facets, like the normals of the mesh are not taken into account. The shadows inside the part are also very grainy.


I would put the light much far away from the part:
Using a *1000 factor:

light_source { // Latitude,Longitude: 45,0,LDXRadius*2
(<0*LDXRadius,-1.5*LDXRadius,-1.5*LDXRadius> + LDXCenter)*1000
color rgb 0.85
area_light 200, 200, 10, 10
jitter
}
light_source { // Latitude,Longitude: 30,120,LDXRadius*2
(<1.5*LDXRadius,-1*LDXRadius,0.866026*LDXRadius> + LDXCenter)*1000
color rgb 0.85
area_light 200, 200, 10, 10
jitter
}
light_source { // Latitude,Longitude: 60,-120,LDXRadius*2
(<0,-2*LDXRadius,0> + LDXCenter)*1000
color rgb 0.5
area_light 200, 200, 10, 10
jitter
}
light_source { // Custom light 2: Side
(<2*LDXRadius,-0*LDXRadius,-2*LDXRadius> + LDXCenter)*1000
color rgb 0.5
area_light 200, 200, 10, 10
jitter
}

This is what I get:
[Image: 33m6jdj.png]
No more facets, but too bright.


I can decrease the brightness by changing the lights colors:
using a 1/1.5 factor for the rgb colors:

light_source { // Latitude,Longitude: 45,0,LDXRadius*2
(<0*LDXRadius,-1.5*LDXRadius,-1.5*LDXRadius> + LDXCenter)*1000
color rgb 0.85/1.5
area_light 200, 200, 10, 10
jitter
}
light_source { // Latitude,Longitude: 30,120,LDXRadius*2
(<1.5*LDXRadius,-1*LDXRadius,0.866026*LDXRadius> + LDXCenter)*1000
color rgb 0.85/1.5
area_light 200, 200, 10, 10
jitter
}
light_source { // Latitude,Longitude: 60,-120,LDXRadius*2
(<0,-2*LDXRadius,0> + LDXCenter)*1000
color rgb 0.5/1.5
area_light 200, 200, 10, 10
jitter
}
light_source { // Custom light 2: Side
(<2*LDXRadius,-0*LDXRadius,-2*LDXRadius> + LDXCenter)*1000
color rgb 0.5/1.5
area_light 200, 200, 10, 10
jitter
}

This is what I get:
[Image: ru1d8g.png]


Finally, I don't like those kind of render because it is really dark inside the part (of course because there is no light in it).
I would turn on radiosity.
[Image: 2wqbg9y.png]


For more realism, I would add some reflections and a floor, and this is what I get with the settings I use for my renders:
[Image: 4jq928.png]
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Messages In This Thread
New Parts for LGEO Library - by Damien Roux - 2015-04-28, 0:14
Re: New Parts for LGEO Library - by Gerhard - 2015-05-27, 20:43
Re: New Parts for LGEO Library - by Gerhard - 2015-05-28, 16:04
Re: New Parts for LGEO Library - by Gerhard - 2015-05-29, 17:05
Re: New Parts for LGEO Library - by Damien Roux - 2015-12-03, 0:28

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