Here's what you can do with it; IF you can rotate around an axis. I don't know
how in POV. vrotate() is not rotation(r,axis,pnt). If you cant, you need
triangulation.inc ... added centering option, and y adjust.
CamAng change, scale stays ...


/*
right=up.eye
eye=right.up
up=eye.right
*/
#declare campos = <0,80,-250>;
#declare cameye = vnormalize(<20,12,0>-campos);
#declare camup = <-1,1,0>;
#declare camright = vnormalize(vcross(camup,cameye));
#declare camup = vnormalize(vcross(cameye,camright));
#declare FontSize = 1.0;
#declare camang = 30;

camera {
  location campos
  right camright
  up camup *(image_height/image_width)
  direction cameye*(image_height/image_width)
  angle camang
}
#include "transforms.inc"
#macro label(Text,objv,r,col,top,center,ydeg)
#local fl = 1/tan(radians(camang/2));
#local vl = vlength(objv-campos)/(fl*20);
#if (top)
#local pnt = camup*(r*1.05)+objv;
#else
#local pnt = -camup*(vl*FontSize+r)+objv;
#end
#local eye = vnormalize(pnt-campos);
object {
  text {
    ttf "Arial.ttf" Text 1 0
    texture {  pigment { rgb col }  finish { ambient 1 diffuse 0 } }
  }
  #if (center) translate -x*((strlen(Text)/2) * FontSize / (2*FontSize)) #end
  scale vl*FontSize
 #if (ydeg) rotate y* ydeg #end
  Matrix_Trans(vnormalize(vcross(camup,eye)),camup,eye,pnt)
  no_shadow
}
#end
label("HELLO 162",<60,24,80>,48,<0.0196, 0.0196, 0.2156>,1,1,0)
label("Here are 492",y* 29.9,24*.8,<0.0196, 0.0196, 0.2156>,0,1,0)

#declare pnt = rotation(radians(camang/2.04),camup,cameye)*10+campos;
#declare d = 1;
#declare rowh = camang * 0.005;
label("Display Info 0",pnt,0,0,1,0,d)
label("Row 1",pnt,rowh * 1,0,1,0,d)
label("Row 2",pnt,rowh * 2,0,1,0,d)
label("Row 3",pnt,rowh * 3,0,1,0,d)
label("Row 4",pnt,rowh * 4,0,1,0,d)
label("Row 5",pnt,rowh * 5,0,1,0,d)

label("Row 1",pnt,rowh * 0,0,0,0,d)
label("Row 2",pnt,rowh * 1,0,0,0,d)
label("Row 3",pnt,rowh * 2,0,0,0,d)
label("Row 4",pnt,rowh * 3,0,0,0,d)
label("Row 5",pnt,rowh * 4,0,0,0,d)
label(concat("CamAng ",str(camang,0,0)),pnt,rowh * 5,0,0,0,d)

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So I took it to Hawaii.
Gave up on axis rotation in POV.

included triangulation.inc,
set up for 2 cameras, because Lego plane has 2 cameras.
Up
Eye
campos

or
Up2
Eye2
campos2

the rest, u can figure out.
http://news.povray.org/povray.text.scene-files/attachment/%3Cweb.5e25818b2dd48e039da690110%40news.povray.org%3E/label_m
aker_headsup.zip

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On 20/01/2020 00:31, Melody wrote:

> Nice sharp font! Is that pov3.7?
It's 3.8-alpha

> Mine never looked that good.
nothing special though


> Is that a high camera angle?

camera angle=36

> Perspective makes them tilt.

yes, label "ptA2" seems a little bit tilted.


> something else to understand about text - possibly correct.
It's already very good.



-- 
Kurtz le pirate
Compagnie de la Banquise

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only way to improve text sharpness is print one letter at a time.
one of the luckier frames in the movie (87)
full size

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"Melody" <nomail@nomail> wrote:
> only way to improve text sharpness is print one letter at a time.
not,
ttf "Arial.ttf" Text .5 0

keeps it sharper than 1

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suggest .2 font thickness, or less.
change ydeg to zdeg.
and do something for tilting.

ttf "Arial.ttf" Text .2 0
#if (zdeg) rotate z* zdeg #end

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i  screw up much as I succeed.
wrong image.

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if u changed ydeg to zdeg,
auto tilt-correction for left-side display,
 might look something like this.

#macro drwtext()
  #local pnt = rotation(radians(camang/2.04),camup,cameye)*10+campos;
  #local rowh = camang * 0.0036;
  #declare FontSize = .8;
  #local s = array[4] {
    concat("Azimuth     ",str(360-rascension(cameye),0,2)),
    concat("Declination ",str(declination(cameye),0,2)),
    concat("CamAng      ",str(camang,0,1)),
    concat("Time     ",date("%H:%M:%S"))
  }
  #local strtn = 1; // start negative
  #local i = -strtn;
  #while (i < 3)
   #local d = (i*-0.5 - 0.5)*(camang/80);
   label(s[i+strtn],pnt,rowh * i,0,0,0,d)
   #local i = i+1;
  #end
#end

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higher cam angles with well-behaving text.
and all staying same size.

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"Melody" <nomail@nomail> wrote:
> higher cam angles with well-behaving text.
> and all staying same size.

 last variable, ImgSize.

  #local imgSzAdj = 640 / image_width;
  #local rowh = camang * 0.0036 * imgSzAdj;
  #declare FontSize = .8 * imgSzAdj;

now it's done.

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