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Time for a little wip.
Following this thread:
http://news.povray.org/povray.binaries.images/thread/%3Cweb.52c1498885bcdecd90cbcd420@news.povray.org%3E/
I let myself be inspired by the photograph by Bill's daughter and the
engraving by MC Escher.
Height_field entirely based on a GIMP image; Red Oak leaves scanned from
RL in the neighbourhood.
The challenge for me is now to get the positioning of the leaves better
in relation to the height_field and - where overlapping - with each
other. Not sure yet how I am going to solve that...
Thomas
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Attachments:
Download 'puddle_02.jpg' (227 KB)
Preview of image 'puddle_02.jpg'
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Thomas de Groot <tho### [at] degroot org> wrote:
> Time for a little wip.
>
> Following this thread:
>
>
http://news.povray.org/povray.binaries.images/thread/%3Cweb.52c1498885bcdecd90cbcd420@news.povray.org%3E/
>
> I let myself be inspired by the photograph by Bill's daughter and the
> engraving by MC Escher.
>
> Height_field entirely based on a GIMP image; Red Oak leaves scanned from
> RL in the neighbourhood.
>
> The challenge for me is now to get the positioning of the leaves better
> in relation to the height_field and - where overlapping - with each
> other. Not sure yet how I am going to solve that...
>
> Thomas
Hi Thomas,
what Kind of object are the leaves? The sand is an height_field I understood,
are the leaves meshes or height_fields too? A possible way may be to convert the
height_fields into meshes. Most likely you must modify the macros be Rune
(shapes.inc) to meet your needs. IIRC the meshes can be converted to OBJ with
PoseRay. Then the dressing room in Poser may help. Just a silly idea, never done
this before. But I would give it a try. I know you have all this resources.
Best regards,
Michael
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On 23-12-2014 20:59, MichaelJF wrote:
> Hi Thomas,
>
> what Kind of object are the leaves? The sand is an height_field I understood,
> are the leaves meshes or height_fields too? A possible way may be to convert the
> height_fields into meshes. Most likely you must modify the macros be Rune
> (shapes.inc) to meet your needs. IIRC the meshes can be converted to OBJ with
> PoseRay. Then the dressing room in Poser may help. Just a silly idea, never done
> this before. But I would give it a try. I know you have all this resources.
The leaves are meshes (Silo uvmapped>>obj>>Poseray>>mesh2). The problem
is not there. It is in the fact that ideally I need several trace()
points per leave and choose the highest for its position, then - if
necessary - reposition the leaf according to the other points.
Especially where tracks are present, height differences are substantial
within a small circle.
Thomas
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Looks great!
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Thomas de Groot <tho### [at] degrootorg> wrote:
> Time for a little wip.
>
> Following this thread:
>
>
http://news.povray.org/povray.binaries.images/thread/%3Cweb.52c1498885bcdecd90cbcd420@news.povray.org%3E/
>
> I let myself be inspired by the photograph by Bill's daughter and the
> engraving by MC Escher.
>
> Height_field entirely based on a GIMP image; Red Oak leaves scanned from
> RL in the neighbourhood.
>
> The challenge for me is now to get the positioning of the leaves better
> in relation to the height_field and - where overlapping - with each
> other. Not sure yet how I am going to solve that...
>
> Thomas
Looks good so far, if you are trying to be more like the Escher image I think a
brighter sky and less ripples on the water are required the ground/sand looks
really great though.
I agree that the leaves are probably the weakest part of the image currently
especially where they overlap the ground.
Sean
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On 24-12-2014 17:15, s.day wrote:
> Looks good so far, if you are trying to be more like the Escher image I think a
> brighter sky and less ripples on the water are required the ground/sand looks
> really great though.
>
> I agree that the leaves are probably the weakest part of the image currently
> especially where they overlap the ground.
Thanks Sean. No, I do not want an 'Escher' ;-) I just draw my
inspiration from different sectors. However, the sky could certainly be
brighter and is on my todo list. Concerning the ripples, I looked at the
photograph and thought that 'shivering' aspect of the water really neat.
I will need to scale down the effect still more however.
The leaves are a challenge and not trivial. I am working on a solution
using two trace points per leaf (for a start) and see how it goes. I
need also to concern myself with the collision aspect. I shall dig
through my collection of third party code as I remember a couple of
examples from the past.
Thomas
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On 24-12-2014 16:29, jhu wrote:
> Looks great!
>
Thanks!
Thomas
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Le 23/12/2014 14:15, Thomas de Groot a écrit :
> Time for a little wip.
>
> Following this thread:
>
>
http://news.povray.org/povray.binaries.images/thread/%3Cweb.52c1498885bcdecd90cbcd420@news.povray.org%3E/
>
>
> I let myself be inspired by the photograph by Bill's daughter and the
> engraving by MC Escher.
>
> Height_field entirely based on a GIMP image; Red Oak leaves scanned from
> RL in the neighbourhood.
>
> The challenge for me is now to get the positioning of the leaves better
> in relation to the height_field and - where overlapping - with each
> other. Not sure yet how I am going to solve that...
>
> Thomas
>
Nice start, and happy Christmas.
--
Lionel
<b>Do not judge my words, judge my actions.</b>
---
Ce courrier électronique ne contient aucun virus ou logiciel malveillant parce que la
protection avast! Antivirus est active.
http://www.avast.com
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Better but still not perfect. The control of the leaf orientation is
tricky especially were there are sudden jumps in the height_field. For
trace() I use a more basic/smooth height_field and calculate the
orientation from two points but still the transformations are not equal
for all leaves.
Thomas
Post a reply to this message
Attachments:
Download 'puddle_03.jpg' (176 KB)
Preview of image 'puddle_03.jpg'
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Another variation (better?).
Thomas
Post a reply to this message
Attachments:
Download 'puddle_04.jpg' (238 KB)
Preview of image 'puddle_04.jpg'
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That's looking really good, Thomas.
I think that having some of the leaves partially covered in water or sand adds a
degree of realism, especially since the tire tracks imply disturbed ground.
Have you thought about placing your leaves like a tripod, using a 3-point
orientation method? That might help get them to lay correctly.
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Le 14-12-27 07:10, Thomas de Groot a écrit :
> Better but still not perfect. The control of the leaf orientation is
> tricky especially were there are sudden jumps in the height_field. For
> trace() I use a more basic/smooth height_field and calculate the
> orientation from two points but still the transformations are not equal
> for all leaves.
>
> Thomas
>
For the few leaves that still intersect with the ground, it looks
somewhat like there are holes/breakages in them, whitch is normal and
add some credibility.
Alain
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On 27-12-2014 17:23, Bald Eagle wrote:
> That's looking really good, Thomas.
Thank you indeed.
>
> I think that having some of the leaves partially covered in water or sand adds a
> degree of realism, especially since the tire tracks imply disturbed ground.
Yes, that was also my judgement :-)
>
> Have you thought about placing your leaves like a tripod, using a 3-point
> orientation method? That might help get them to lay correctly.
Out of laziness I must confess I did not use three point, only two and I
agree that I should do that. In addition to a few other things that is
going to be my next step.
Thomas
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On 27-12-2014 21:17, Alain wrote:
> For the few leaves that still intersect with the ground, it looks
> somewhat like there are holes/breakages in them, whitch is normal and
> add some credibility.
Indeed. I am not too concerned about them presently. Still, I shall seek
some improvements.
Thomas
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Now, with a couple of additions, the meaning of the scene completely
changes.
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Attachments:
Download 'puddle_06.jpg' (226 KB)
Preview of image 'puddle_06.jpg'
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On 12/30/2014 07:11 AM, Thomas de Groot wrote:
> Now, with a couple of additions, the meaning of the scene completely
> changes.
>
Clever idea & neatly done! I'll have to let my daughter know her puddle
snapshot has led to another Pov-Ray image. :-)
Bill P.
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