 |
|
|
|
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Heightmap + isosurface experiment. Sorta "meh," but promising.
Post a reply to this message
Attachments:
Download 'hfisotest.jpg' (280 KB)
Preview of image 'hfisotest.jpg'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Some math-related stuff. Torii rotated around two arbitrary points on a sphere.
Represents one-half of a conformal transformation.
Post a reply to this message
Attachments:
Download 'rotatedarcsonsphere.jpg' (60 KB)
Preview of image 'rotatedarcsonsphere.jpg'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
More math-related stuff. An image showing an initial circle inversion that makes
possible the construction of an Apollonian gasket. Uploaded because why not ;)
Post a reply to this message
Attachments:
Download 'cinvert vectors.png' (25 KB)
Preview of image 'cinvert vectors.png'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
> More math-related stuff.
If you ever desired a sphere-shaped bump on a plane but also wanted raytraced
perfection, here is an example of the geometry you might consider using. Or you
might just use an isosurface or something...
Post a reply to this message
Attachments:
Download 'circle-plane-join-smooth.png' (9 KB)
Preview of image 'circle-plane-join-smooth.png'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
"Samuel B." <stb### [at] hotmail com> wrote:
> > grass
this one "does it" for me.
regards, jr.
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
I don't think I ever posted an updated version of the bubbles I was rendering...
My first attempts used blobs, which totally failed to capture the subtleties and
detail of actual minimal surfaces. Unsatisfied, I turned my attention to actual
geometry... only to find even more trouble, since the trade-off always seems to
be: accuracy? or a long render time? choose one.
At any rate, I found out that three surfaces have to meet at 120 degrees if you
want any sort of accuracy in your bubble cluster. This image portrays the
metrics involved for two bubbles.
Post a reply to this message
Attachments:
Download 'doublebubble2d.png' (28 KB)
Preview of image 'doublebubble2d.png'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
> More math-related stuff.
Soddy circles! Take three touching circles and find a center circle that touches
all three primary ones on the /inside/; that's called the incircle (blue). Now
find one that touches all three on the /outside/. That's the circumcircle
(yellow). I didn't care about all this until I wanted to render an Apallonian
gasket...
Post a reply to this message
Attachments:
Download 'soddy circles.png' (27 KB)
Preview of image 'soddy circles.png'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
What you see here is screen-space ambient occlusion... in POV-Ray. Because other
types of ambient occlusion are too slow for complex, arbitrary geometry.
Post a reply to this message
Attachments:
Download 'ssao-test-b-ssao.jpg' (65 KB)
Preview of image 'ssao-test-b-ssao.jpg'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Sorry to all you newsreader users; I'm replying to the OP.😊
Here's the result of my SSAO test: something kind of dusty. It hints at the
potential of using SSAO for POV scenes. If you were using inside tests this
would be _really_ slow to render, but since SSAO was performed on a depth pass,
it was pretty quick. But my SSAO algorithm might need some work...
Post a reply to this message
Attachments:
Download 'ssao-test-b.jpg' (71 KB)
Preview of image 'ssao-test-b.jpg'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Alright, last image unless I forgot something. Here is a leaf, reconstructed
from a digitized skeleton leaf I found on the 'net. (You can make skeleton
leaves by soaking freshly plucked foliage in washing soda, or so I hear. I used
an image search.) A few versions of the skeleton leaf--blurred at different
levels and combined--will produce the bump map for this. (Better yet would be to
use something like Crazy Bump, which is easier. Oh well.)
Post a reply to this message
Attachments:
Download 'skeletonleafbump.jpg' (199 KB)
Preview of image 'skeletonleafbump.jpg'
|
|
| |
| |
|
|
|
|
| |
