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Hello,
I want to display a text at a given position but I want to keep it oriented
toward the camera.
I really don't know how to do it, which type of transformation I have to do ...
Here is an example of my problem:
#include "colors.inc"
#include "textures.inc"
#include "shapes.inc"
// finish options
#declare ambientCoef = 0.2;
#declare diffuseCoef = 0.8;
#declare specularCoef = 0.8;
camera {
perspective
location <22.424428, 27.372077, 22.881150>
sky <-0.190369, 0.724010, -0.663000>
right -x*image_width/image_height
angle 30.000000*image_width/image_height
look_at <1.214010, 0.842058, 0.000000>
}
light_source {
<22.424428, 27.372077, 22.881150>
color <1.0, 1.0, 1.0>*0.8
}
background {
color rgb <1.000000, 1.000000, 1.000000>
}
sphere {
<-2.311276, -3.133184, 0.000000> 0.100000
texture
{
pigment { rgb <1.000000, 1.000000, 0.188235> }
finish {ambient ambientCoef diffuse diffuseCoef specular specularCoef}
}
}
text {
ttf "cyrvetic.ttf" "TEST" 0, 0
pigment { Black }
translate <-2.211276, -3.033184, 0.100000>
}
If someone has an idea.
Thanks,
YoM
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On 15/01/2014 8:46 AM, YoM wrote:
> If someone has an idea.
Not only an idea but a solution.
screen.inc
http://www.povray.org/documentation/view/3.6.1/495/
--
Regards
Stephen
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From: posfan12
Subject: Re: Keep the text oriented toward the camera
Date: 15 Jan 2014 04:45:59
Message: <52d658d7@news.povray.org>
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On 1/15/2014 4:01 AM, Stephen wrote:
> On 15/01/2014 8:46 AM, YoM wrote:
>> If someone has an idea.
>
> Not only an idea but a solution.
>
> screen.inc
>
> http://www.povray.org/documentation/view/3.6.1/495/
>
I created an updated version of screen.inc here:
http://isometricland.net/povray/povray.php
---
This email is free from viruses and malware because avast! Antivirus protection is
active.
http://www.avast.com
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On 15/01/2014 9:45 AM, posfan12 wrote:
> On 1/15/2014 4:01 AM, Stephen wrote:
>> On 15/01/2014 8:46 AM, YoM wrote:
>>> If someone has an idea.
>>
>> Not only an idea but a solution.
>>
>> screen.inc
>>
>> http://www.povray.org/documentation/view/3.6.1/495/
>>
>
> I created an updated version of screen.inc here:
>
> http://isometricland.net/povray/povray.php
>
>
That is good.Thanks for posting the link.
--
Regards
Stephen
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Stephen <mca### [at] aol com> wrote:
> On 15/01/2014 8:46 AM, YoM wrote:
> > If someone has an idea.
>
> Not only an idea but a solution.
>
> screen.inc
>
> http://www.povray.org/documentation/view/3.6.1/495/
>
> --
> Regards
> Stephen
Thank you. Maybe I don't understand Screen_Object variables but with:
Screen_Object ( text {
ttf "cyrvetic.ttf" "TEST" 0, 0
pigment { Black }
translate <-2.311276, -3.133184, 0.000000>
},<0,0>, <0.01,0.01>, true, 1 )
my text is still not oriented toward my camera.
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"YoM" <yoh### [at] gmailcom> wrote:
> Thank you. Maybe I don't understand Screen_Object variables but with:
> Screen_Object ( text {
> ttf "cyrvetic.ttf" "TEST" 0, 0
> pigment { Black }
> translate <-2.311276, -3.133184, 0.000000>
> },<0,0>, <0.01,0.01>, true, 1 )
>
> my text is still not oriented toward my camera.
I think YoM will put a text object somewhere into the scene and adjust it with
the camera. Than the following code may be of help. May be it will not work with
every location and sky vector, but if not, exchanging the signs within the
Shear_Trans call should help. And it will adjust the first letter approximately
correct only. But for a short text setting the thickness to zero again it
should yield acceptable results.
The code uses transforms.inc which is included by shapes.inc here already.
Otherwise transforms.inc has to be included off course.
Best regards,
Michael
#include "colors.inc"
#include "textures.inc"
#include "shapes.inc"
// finish options
#declare ambientCoef = 0.2;
#declare diffuseCoef = 0.8;
#declare specularCoef = 0.8;
#declare CamLoc = <22.424428, 27.372077, 22.881150>;
#declare CamSky = <-0.190369, 0.724010, -0.663000>;
#declare Cam_LA = <1.214010, 0.842058, 0.000000>;
camera {
perspective
location CamLoc
sky CamSky
right -x*image_width/image_height
angle 30.000000*image_width/image_height
look_at Cam_LA
}
light_source {
<22.424428, 27.372077, 22.881150>
color <1.0, 1.0, 1.0>*0.8
}
background {
color rgb <1.000000, 1.000000, 1.000000>
}
#declare Farben = array[10]
#declare Farben[0] = Red;
#declare Farben[1] = Yellow;
#declare Farben[2] = Blue;
#declare Farben[3] = Green;
#declare Farben[4] = Cyan;
#declare Farben[5] = Magenta;
#declare Farben[6] = Orange;
#declare Farben[7] = Black;
#declare Farben[8] = SlateBlue;
#declare Farben[9] = YellowGreen;
#declare Zufall = seed(3187);
#for(i,1,25)
#declare TextLowerLeft=<-2.211276, -3.033184, 0.100000> // your original
position of the text object
+ <rand(Zufall)*10,rand(Zufall)*10,rand(Zufall)*10>;
// add a random compenent
#declare TransVec1=vnormalize(TextLowerLeft-CamLoc);
#declare TransVec2=vnormalize(vcross(TransVec1,CamSky));
#declare TransVec3=vnormalize(vcross(TransVec1,TransVec2)); // for the case
that CamSky and Transvec1 are not perpendicular
text {
ttf "cyrvetic.ttf" "Test" 1, 0 // increased thickness for testing the
orientation
// only the first letter will
pigment { Farben[int(rand(Zufall)*9.99)] }
Shear_Trans(TransVec2,-TransVec3,TransVec1) translate TextLowerLeft
}
#end
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Exactly what I need Mickael !
Thank you very much !
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