I wanted to make a "+"-shaped pattern by overlapping a gradient x and a gradient
y pigment with abruptly changing color maps.

I seemed to get the first texture I specified in the layering - when I tried to
put a clear texture with an orthogonal stripe (0.49-0.51) on top of that, it
occluded the first texture.

I always have problems correctly implementing layered textures....

Gonna head to lunch - perhaps someone has advice / examples?

Post a reply to this message

"Bald Eagle" <cre### [at] netscapenet> wrote:
> I wanted to make a "+"-shaped pattern by overlapping a gradient x and a gradient
> y pigment with abruptly changing color maps.
>
> I seemed to get the first texture I specified in the layering - when I tried to
> put a clear texture with an orthogonal stripe (0.49-0.51) on top of that, it
> occluded the first texture.
>
> I always have problems correctly implementing layered textures....
>
> Gonna head to lunch - perhaps someone has advice / examples?

Can't imagine the layer transparency obscuring the underlying texture, shouldn't
be any problem with that alone anyway.

Don't know the exact thing you're trying to make (orthogonal=horizontal by any
chance?) but here's a scene file showing either a layered pattern or image
pattern. Not sure of how good that is so beware of faults. Maybe you can get
something figured out from it.
Use your own existing render output folder/directory.

//cmd:+w500 +h500 +fn +ua +oc:\renderings\image-pattern_cross-tiles

#version 3.7;

global_settings{assumed_gamma 1}

#declare LayeredPattern=yes;

#declare CreateImageMap=no;

light_source{-9*z,1}

camera{
 #if (CreateImageMap=yes)
 orthographic right x*3 up y*3
 #end
 location -4*z look_at 0}

background {rgb 0}

#declare GradX=
 texture{
  pigment{
   gradient x
   color_map{
    [0 red 1]
    //[0.49 red 1]
    [0.49 rgbt 1]
    [0.49 green 1]
    [0.51 green 1]
    [0.51 rgbt 1]
    //[0.51 blue 1]
    [1 blue 1]
   }
  }
 }

#declare GradY=
 texture{
  pigment{
   gradient y
   color_map{
    [0 red 1]
    //[0.49 red 1]
    [0.49 rgbt 1]
    [0.49 green 1]
    [0.51 green 1]
    [0.51 rgbt 1]
    //[0.51 blue 1]
    [1 blue 1]
   }
  }
 }

#declare GradXY=
pigment {green 1}


#if (LayeredPattern=no)

#if (CreateImageMap=yes)
union{
 box{-0.5,0.5
  pigment {rgb 0.25} // middle dark gray
  }
 box{-0.5,0.5
  pigment {rgb 1} // bottom white
  translate -y}
 box{-0.5,0.5
  pigment {rgb 1} // top white
  translate y}
 box{-0.5,0.5
  pigment {rgb 0.5} // left gray
  translate -x}
 box{-0.5,0.5
  pigment {rgb 0.5} // right gray
  translate x}
  scale <1,1,0.01>
}

 #else

plane{z,0
 texture{
  image_pattern{
   png "image-pattern_cross-tiles" //use_alpha
   map_type 0
   once
  }
  texture_map{
   [0 pigment {rgbt 1}] // outside area
   [0.25 GradXY] // middle tile
   [0.5 GradX] // left and right tiles
   [1 GradY] // top and bottom tiles
  }
  translate -0.5 // centering
  scale 3 // 1 unit boxes 3 wide, 3 tall
 }
}

#end

#else

plane{ // simple layered pattern
 z,0
 texture{GradX}
 texture{GradY}
}

#end

Post a reply to this message

Thanks - I eventually worked it out - it was a problem combining the remaining
orthogonal axis, the alphabet, and the input controller.

:|

I did very much enjoy the cool looking pattern resulting from your code.   :)

Post a reply to this message

"Bald Eagle" <cre### [at] netscapenet> wrote:
> Thanks - I eventually worked it out - it was a problem combining the remaining
> orthogonal axis, the alphabet, and the input controller.
>
> :|
>
> I did very much enjoy the cool looking pattern resulting from your code.   :)

YW! I figured you just needed something to pass the time meanwhile.

Post a reply to this message