 |
|
|
|
|
|
| |
| |
|
|
|
|
| |
| |
|
|
I acted on my yearly urge to do a Pov-Ray pumpkin.
The isosurface using the base, shape and texture functions is in the
upper left of the image. All other pumpkins are deformations of those
functions as additional isosurfaces. The original image is a third
larger than that attached and rendered in about 12 minutes with one
light and radiosity.
Bill P.
Post a reply to this message
Attachments:
Download 'isopumpkins.jpg' (69 KB)
Preview of image 'isopumpkins.jpg'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On 14/09/2014 13:28, William F Pokorny wrote:
> I acted on my yearly urge to do a Pov-Ray pumpkin.
>
> The isosurface using the base, shape and texture functions is in the
> upper left of the image. All other pumpkins are deformations of those
> functions as additional isosurfaces. The original image is a third
> larger than that attached and rendered in about 12 minutes with one
> light and radiosity.
>
> Bill P.
Delicious!
And neatly in time for Halloween.
--
IQ of crossposters with FU: 100 / (number of groups)
IQ of crossposters without FU: 100 / (1 + number of groups)
IQ of multiposters: 100 / ( (number of groups) * (number of groups))
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On 14-9-2014 13:28, William F Pokorny wrote:
> I acted on my yearly urge to do a Pov-Ray pumpkin.
>
> The isosurface using the base, shape and texture functions is in the
> upper left of the image. All other pumpkins are deformations of those
> functions as additional isosurfaces. The original image is a third
> larger than that attached and rendered in about 12 minutes with one
> light and radiosity.
>
> Bill P.
[Which reminds me that I have to go to the farm and buy my reserve for
the winter months...]
Good work. Maybe the texture is too clean? There are often little warts
or colour changes between top and bottom.
Thomas
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
I'm always impressed by what can be done with isosurfaces.
And it's even hollow! :)
Next thing we know, there will be isosurface seeds and that spaghetti stuff...
;)
Thomas makes the point about coloration, and indeed there is usually some
spreading of the green from the stem out onto the surface, as well as the pale,
fish-belly yellow on the underside where it meets the ground.
I think acorn squash are visually determined to be ripe by looking at the
underside and seeing if it's orange. I've always wondered what causes that
specific change in coloration - only where it's in contact with the soil.
Is this an adaptation of the equations for the isosurface apple?
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
William F Pokorny <ano### [at] anonymous org> wrote:
> I acted on my yearly urge to do a Pov-Ray pumpkin.
>
> The isosurface using the base, shape and texture functions is in the
> upper left of the image. All other pumpkins are deformations of those
> functions as additional isosurfaces. The original image is a third
> larger than that attached and rendered in about 12 minutes with one
> light and radiosity.
>
> Bill P.
Those are very good pumpkins. Procedural texture?
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On 09/14/2014 10:28 AM, jhu wrote:
> William F Pokorny <ano### [at] anonymousorg> wrote:
>> I acted on my yearly urge to do a Pov-Ray pumpkin.
>>
>> The isosurface using the base, shape and texture functions is in the
>> upper left of the image. All other pumpkins are deformations of those
>> functions as additional isosurfaces. The original image is a third
>> larger than that attached and rendered in about 12 minutes with one
>> light and radiosity.
>>
>> Bill P.
>
> Those are very good pumpkins. Procedural texture?
>
Thanks all.
I didn't spend too much time on the textures & agree most pumpkins are
uglier & more varied - especially across varieties and sizes.
The texture for the surface of the pumpkin is a slightly variable color
about a core color plus normal bumps scaled very small to add some
graininess.
The rest of the effect comes from the pumpkin shape being formed with
the aid of a spherical displacement map. The spherical map was created
in Pov-Ray ahead of time using the spherical camera and it gets used for
the rind and meat sub-functions of the total shape's function.
I thought a little about adding guts, but I plan to use it first for a
Happy Halloween Jack-o'-lantern. For the lantern, the guts would have to
be cleaned out and I didn't want to deal with that slimy mess! ;-)
No, I didn't start with Mike's parametric apple, but some of the
underlying math is similar.
Bill P.
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On 14-9-2014 19:03, William F Pokorny wrote:
> I didn't spend too much time on the textures & agree most pumpkins are
> uglier & more varied - especially across varieties and sizes.
>
> The texture for the surface of the pumpkin is a slightly variable color
> about a core color plus normal bumps scaled very small to add some
> graininess.
Imo, that is spot on.
>
> The rest of the effect comes from the pumpkin shape being formed with
> the aid of a spherical displacement map. The spherical map was created
> in Pov-Ray ahead of time using the spherical camera and it gets used for
> the rind and meat sub-functions of the total shape's function.
[Did I note /spherical camera/ on my todo list? Hmmm... yes I did. three
times actually.] :-)
Thomas
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
William F Pokorny <ano### [at] anonymousorg> wrote:
> I acted on my yearly urge to do a Pov-Ray pumpkin.
>
> The isosurface using the base, shape and texture functions is in the
> upper left of the image. All other pumpkins are deformations of those
> functions as additional isosurfaces. The original image is a third
> larger than that attached and rendered in about 12 minutes with one
> light and radiosity.
>
> Bill P.
These are great, the shape is perfect (for a perfect pumpkin of course which is
tough to find, they are mostly distorted in a non symmetrical manner).
I am jealous of your isosurface skills though.
Sean
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Am 15.09.2014 11:40, schrieb s.day:
> I am jealous of your isosurface skills though.
Not just you, Sean. Not just you.
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Le 14/09/2014 13:28, William F Pokorny a écrit :
> I acted on my yearly urge to do a Pov-Ray pumpkin.
>
> The isosurface using the base, shape and texture functions is in the
> upper left of the image. All other pumpkins are deformations of those
> functions as additional isosurfaces. The original image is a third
> larger than that attached and rendered in about 12 minutes with one
> light and radiosity.
>
> Bill P.
Good work Bill, maybe you can add some (little) perturbations in the
surface...
--
Do not judge my words, judge my actions.
---
Ce courrier électronique ne contient aucun virus ou logiciel malveillant parce que la
protection avast! Antivirus est active.
http://www.avast.com
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
