POV-Ray : Newsgroups : povray.binaries.images : Kauai Server Time: 29 Sep 2020 11:18:44 GMT
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From: Melody
Subject: Kauai
Date: 5 Dec 2019 06:10:01
Message: <web.5de89df1702927829da690110@news.povray.org>
started as Kauai then just did them all.
Spatial res = 3 3 1, not 30,  these are 1x1 degree.

header does not give lon lat coords
and so it had to be formatted from the web page

hawaii-c -156°00'00 -155°00'00 19°00'00 20°00'00
hawaii-e -155°00'00 -154°00'00 19°00'00 20°00'00
hawaii-n -156°00'00 -155°00'00 20°00'00 21°00'00
hawaii-s -156°00'00 -155°00'00 18°00'00 19°00'00
hawaii-w -157°00'00 -156°00'00 19°00'00 20°00'00
maui-ne -157°00'00 -156°00'00 21°00'00 22°00'00
maui-nw -158°00'00 -157°00'00 21°00'00 22°00'00
maui-se -157°00'00 -156°00'00 20°00'00 21°00'00
maui-sw -158°00'00 -157°00'00 20°00'00 21°00'00
oahu -159°00'00 -158°00'00 21°00'00 22°00'00
kauai-ne -160°00'00 -159°00'00 22°00'00 23°00'00
kauai-nw -161°00'00 -160°00'00 22°00'00 23°00'00
kauai-se -160°00'00 -159°00'00 21°00'00 22°00'00
kauai-sw -161°00'00 -160°00'00 21°00'00 22°00'00

script needed more vars
case of DEM file Headers have the same name ... DOH!

 %useDEMfilename = 1
  %headformat = 0
  ; 0 old, 1 new

NO rename file made, same-name files for maui
NO rename file made, same-name files for maui


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From: Melody
Subject: Re: Kauai
Date: 5 Dec 2019 09:55:00
Message: <web.5de8d3309f12fc349da690110@news.povray.org>
Hawaii parameters 0 0 15 0
Teton parameters  0 0 1 0

even scaled 200
data long shot to being complete


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From: Melody
Subject: Re: Kauai
Date: 6 Dec 2019 04:40:00
Message: <web.5de9db199f12fc349da690110@news.povray.org>
sorter failed on longitude
because only 1 of that longitude
now, version 1.8.mrc script. if anyone cares.
I should have waited to post it, but I wont leave a buggy script in the
utilities thread

 where they are supposed to be
yea


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From: Melody
Subject: Re: Kauai
Date: 8 Dec 2019 06:25:01
Message: <web.5dec96a09f12fc349da690110@news.povray.org>
maybe a better texture, because height_field smooth
doesnt seem so smooth


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From: Bald Eagle
Subject: Re: Kauai
Date: 8 Dec 2019 13:45:00
Message: <web.5decfd769f12fc344eec112d0@news.povray.org>
"Melody" <nomail@nomail> wrote:
> maybe a better texture, because height_field smooth
> doesnt seem so smooth

Believe me, without the smooth, it's a jagged nightmare.

You are really rockin' this digital elevation project - tons of progress and
updates, and I can tell from this animation that there's been a LOT of work
behind the scenes.

Maybe if you touch up the texture(s) and add some normals, then maybe it will
visually smooth things out.   It would also be an amazing feat to be able to get
some maps or satellite photos in register with the 3D landscape - but I've tried
that a little, and it's a registration nightmare.

Again:  Excellent work!   :)


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From: Jörg "Yadgar" Bleimann
Subject: Re: Kauai
Date: 8 Dec 2019 15:54:31
Message: <5ded1cb7@news.povray.org>
Hi(gh)!

On 08.12.19 14:41, Bald Eagle wrote:

> Maybe if you touch up the texture(s) and add some normals, then maybe it will
> visually smooth things out.   It would also be an amazing feat to be able to get
> some maps or satellite photos in register with the 3D landscape - but I've tried
> that a little, and it's a registration nightmare.

The NASA Blue Marble textures IIRC should be available without registration!

See you in Khyberspace!

Yadgar


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From: Jörg "Yadgar" Bleimann
Subject: Re: Kauai
Date: 8 Dec 2019 15:55:02
Message: <5ded1cd6$1@news.povray.org>
Hi(gh)!

On 08.12.19 07:22, Melody wrote:
>   maybe a better texture, because height_field smooth
> doesnt seem so smooth
> 

What vertical exaggeration factor did you use?

See you in Khyberspace!

Yadgar


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From: Bald Eagle
Subject: Re: Kauai
Date: 8 Dec 2019 16:45:00
Message: <web.5ded28469f12fc344eec112d0@news.povray.org>
=?UTF-8?Q?J=c3=b6rg_=22Yadgar=22_Bleimann?= <yaz### [at] gmxde> wrote:

> > ... It would also be an amazing feat to be able to get
> > some maps or satellite photos in register with the 3D landscape - but I've tried
> > that a little, and it's a registration nightmare.


> The NASA Blue Marble textures IIRC should be available without registration!



I wasn't worried about access.   I meant: "registration - the act of adjusting
something to match a standard"

As in getting the graphic to align properly with the heightfield.

(There's probably a far better and completely unambiguous way to say that in
German.)

It is, unfortunately, not simply a matter of elementary scaling, rotation and
translation.  It's likely going to involve shear, a projection matrix, or
something along those lines.


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From: Melody
Subject: Re: Kauai
Date: 8 Dec 2019 20:50:03
Message: <web.5ded616e9f12fc349da690110@news.povray.org>
=?UTF-8?Q?J=c3=b6rg_=22Yadgar=22_Bleimann?= <yaz### [at] gmxde> wrote:
> Hi(gh)!
> What vertical exaggeration factor did you use?

well I used DEMPOVs verticalScale of 15, as it decides the image color range
black green red;, shooting for a mid range.

but that's way too high,
  translate <tx, 0,tz>
  scale < 300, 50, 300 >

just eyeball scale, as I have no idea what it ought to be.


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From: Melody
Subject: Re: Kauai
Date: 8 Dec 2019 21:15:03
Message: <web.5ded667f9f12fc349da690110@news.povray.org>
"Bald Eagle" <cre### [at] netscapenet> wrote:
> "Melody" <nomail@nomail> wrote:
> > maybe a better texture, because height_field smooth
> > doesnt seem so smooth
>
> Believe me, without the smooth, it's a jagged nightmare.
>
> You are really rockin' this digital elevation project - tons of progress and
> updates, and I can tell from this animation that there's been a LOT of work
> behind the scenes.
>
> Maybe if you touch up the texture(s) and add some normals, then maybe it will
> visually smooth things out.   It would also be an amazing feat to be able to get
> some maps or satellite photos in register with the 3D landscape - but I've tried
> that a little, and it's a registration nightmare.
>
> Again:  Excellent work!   :)

thank you, I didn't think anyone would like it ... heh. I totally grok 3D space
mathematically and triangulation, camera matrix is inverted to world matrix, and
everything is fed thru that world matrix, when working from scratch, which this
is not. just controlling the camera is all that's needed here. not that easy to
write, thought I'd include the flying stereo clock camera for amusement. for
animation, must step movements each frame or lose your place.
goes something like this.

/// /////////////////////////// CAMERA ///////////////////////////////////
#declare ZeroPrlx = 1.6;  #declare EyeSep = .01; #declare _stereo_ = 10;

#macro movecam(cl)       // 1 / .2 = 5 = execute 3 deg roll in .2 clock // * 5
  #if (cl < .8) #declare roll = -3 * cl * 5; #declare roll = _clamp(roll,-3,0);
#end
  #if (cl >= .8) #declare roll = -3 + 3 * (cl-.8) * 5; #declare roll =
_clamp(roll,-3,0); #end
  #if (cl > 1.1) #declare roll = -5 * (cl-1.1) * 5; #declare roll =
_clamp(roll,-5,0); #end
  #if (cl > 1.6) #declare roll = -5 + 5 * (cl-1.6) * 5; #declare roll =
_clamp(roll,-5,0); #end
  #declare Eye = rotation(radians(roll/-4),y,Eye);
  #declare campos = campos + Eye * 20;
#end

#macro camview(V,rolldeg)
  #local e = vnormalize(V);
  #local U = rotation(radians(rolldeg),e,y);
  #local r = vnormalize(vcross(U,e));
  #local U = vnormalize(vcross(e,r));
  #declare cameramatrix = array[16] {
r.x,r.y,r.z,0,U.x,U.y,U.z,0,e.x,e.y,e.z,0,0,0,0,1 }
 // #local ab = invertmatrix(cameramatrix,worldmatrix);
#end

#declare roll = 0;
#declare startpnt = <100, 50, 200.0>;
#declare campos = startpnt;
#declare Eye = vnormalize(<3240,0,1800> - startpnt);

/// /////////////////////////// CLOCK movecam ////////////////////////////
#declare _clock = clock;
// #declare _clock = .07; // 0-3

#declare finalclock = 3;
#declare step = finalclock / 90; // 90 frames
#declare cli = step;
#while (cli <= _clock)
  movecam(cli)
  #declare cli=cli+step;
#end

// clock = i / 90 / finalclock, -- 1/30 ---  then i = clock * 30
// #declare iter = _clock * 90/finalclock;
// previousclock = (i - 1) / 90/finalclock
// #declare pclock = (iter - 1) / 90/finalclock;


/// ////////////////////////////// CAMERA ////////////////////////////////

camview(Eye,roll)
camera {
  #if (_stereo_)
    stereoscopic
    zeroparallax ZeroPrlx
    eyeseparation EyeSep
  #end
  location campos

  right <cameramatrix[0],cameramatrix[1],cameramatrix[2]>
  up
<cameramatrix[4],cameramatrix[5],cameramatrix[6]>*(image_height/image_width)
  direction
<cameramatrix[8],cameramatrix[9],cameramatrix[10]>*(image_height/image_width)
  angle 43
}

3.6+/win7 ini Final_Frame crashes. that wont stop anything.
; keep single instance is off, so if render
  ; over-runs timer delay, still finishes each frame

you can just run a timer, even over run it.

  var %f = %WorkingDir $+ \kauai.ini
  write -l1 %f +K $+ $calc(%GI / %step)
  write -l5 %f Output_File_Name= $+ %outf
  run c:\povray\bin\pvengine.exe %f /EXIT


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