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Post by pacellie on Jan 13, 2021 18:20:42 GMT
I just finished chapter 10, and this book is excellent. I encourage all of you to implement some version of noise. The following picture used an implementation of Simplex (Improved Perlin) & Fractal Noise with some added Color jittering for the gradient based this implementation SRombauts.  The middle sphere used Simplex Noise, everything else Fractal Noise. |
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Post by signal11 on Feb 3, 2021 6:09:20 GMT
nice ! i have the following rudimentary image, gradient-perlin-noise for both the 'planet' and the poor excuse for an 'ocean'  Attachments:
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Post by inventordave on Feb 10, 2021 23:01:25 GMT
That is a great image. Can I have the scene file, so I may debug my raytracer??
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Post by signal11 on Feb 15, 2021 6:04:10 GMT
That is a great image. Can I have the scene file, so I may debug my raytracer?? really, sorry, but i don't have yml integration done yet, so there is no scene description. here is the related portion of the scene transliterated from my code. i am _sure_ that you can transliterate it to your raytracer. camera:
- hsize : 1280
- vsize : 1024
- fov : 0.8
- look-from : (-2.0, 3.0, -25.0)
- look-to : (0.0, 1.1, 0.0)
- up-direction-vector : (0.0, 1.0, 0.0)
world-light:
- point-light : (2.0, 3.0, -10.0)
- light-color : white
floor (aka ocean) :
- pattern uses gradient-perlin-noise with following parameters:
- color-a : RGB(56, 167, 252)
- color-b : RGB(56, 128, 252)
- seed : std::default_random_engine::default_seed (yes my raytracer is using c++)
- octaves : 16
- material:
- ambient : 0.02
- specular : 0.0
- shininess : 0.05
- reflective : 0.5
sphere (aka red-planet):
- pattern uses gradient-perlin-noise with following parameters:
- color-a : (0.5, 0.0, 0.0)
- color-b : (1.0, 0.6, 0.6)
- seed : std::default_random_engine::default_seed
- octaves : 16
- transform:
- scaling : (3.0, 3.0, 3.0)
- translate : (2.0, 1.5, 3.0)
- rot-y : PI_BY_2F
- rot-z : -PI
- material:
- ambient : 0.1
- diffuse : 0.9
- specular : 0.2
- shininess : 10.0
unfortunately, i haven't put the raytracer in a publicly visible place yet. once i do, i will post the link here. -- best regards signal11 |
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Post by inventordave on Feb 27, 2021 18:55:31 GMT
Thank you, signal11 !! It is very pretty.
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