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I solved the problem described at the root of this message tree.
heres an example of a parabolic reflector with a simple scene...
4 walls and ceiling/floor.
#include "colors.inc"
#include "textures.inc"
#include "shapes.inc"
#include "metals.inc"
#include "glass.inc"
#include "woods.inc"
global_settings {max_trace_level 5}
global_settings { ambient_light rgb<100, 100, 100> }
camera {
perspective
//orthographic
location <0, 2, 0>
//direction <0, -1, 0>
angle 65
focal_point <0,2,0>
up<0,1,0>
right<1,0,0>
look_at <0,0,0>
}
// SR
//angle : ~67.380 ( direction_length=0.5*
// right_length/tan(angle/2) )
//confidence : 0.9 (90%)
//direction : <0,0,1>
//focal_point: <0,0,0>
// Uncomment the area lights only if you've got lots of time.
#declare Dist=80.0;
sky_sphere {
pigment {
gradient y
color_map {
[0, 1 color Gray50 color Gray80]
}
}
}
#declare Floor_Texture =
texture {
pigment {
// solid pattern for use in texture/pigment/normal(/density)
// cube checker pattern, alternates color1 and color2
checker
color rgb <1, 1, 1>,
color rgb <0, 0, 0>}
finish { reflection 0.0 }
}
#declare RedWall_Texture =
texture {
pigment {
// solid pattern for use in texture/pigment/normal(/density)
// cube checker pattern, alternates color1 and color2
checker
color rgb <255, 0, 0>,
color rgb <0, 0, 0>}
finish { reflection 0.0 }
}
#declare GreenWall_Texture =
texture {
pigment {
// solid pattern for use in texture/pigment/normal(/density)
// cube checker pattern, alternates color1 and color2
checker
color rgb <0, 255, 0>,
color rgb <0, 0, 0>}
finish { reflection 0.0 }
}
#declare BlueWall_Texture =
texture {
pigment {
// solid pattern for use in texture/pigment/normal(/density)
// cube checker pattern, alternates color1 and color2
checker
color rgb <0, 0, 255>,
color rgb <0, 0, 0>}
finish { reflection 0.0 }
}
#declare GBWall_Texture =
texture {
pigment {
// solid pattern for use in texture/pigment/normal(/density)
// cube checker pattern, alternates color1 and color2
checker
color rgb <0, 255, 0>,
color rgb <0, 0, 255>}
finish { reflection 0.0 }
}
#declare Floor =
plane { y,0
texture { Floor_Texture
scale 0.5
//rotate y*75
}
}
#declare Ceiling =
plane { y, 5
texture { Floor_Texture
scale 0.5
//rotate y*75
}
}
#declare RWall =
plane { x,5
texture { RedWall_Texture
//scale 0.25
//rotate y*75
}
}
#declare GWall =
plane { -x, 5
texture { GreenWall_Texture
//scale 0.25
//rotate y*75
}
}
#declare BWall =
plane { z,5
texture { BlueWall_Texture
//scale 0.25
//rotate y*75
}
}
#declare GBWall =
plane { -z,5
texture { GBWall_Texture
//scale 0.25
//rotate y*75
}
}
#declare QuadricMir =
union{
// create a quadratic (2nd order) infinite polynomial surface
quadric {
<1, 0, 1> // A x2 + B y2 + C z2 +
<0, 0, 0> // D xy + E xz + F yz +
<0, 1, 0> // G x + H y + I z +
0-1 // J
texture {
finish{reflection {1} ambient 0 diffuse 0}
}
//rotate z*0
//translate z*4
//translate y*4
}
}
#declare Pig_1 =
pigment {
gradient z
color_map {
[1.00, rgb <0.98, 0.98, 0.87>]
}
frequency 4
}
union {
object { Ceiling }
object { Floor }
object { RWall }
object { GWall }
object { BWall }
object { GBWall }
// object { Sphere }
object { QuadricMir }
rotate -y*270
//translate z*4
//translate y*-2
//translate x*1
}
// ======================== END ========================
Christopher James Huff wrote:
> In article <3D8### [at] hotmail com>, srnewt <srn### [at] hotmailcom>
> wrote:
>
>
>>I need the reflector to be a perfect mirror
>
>
> This part is easy, just use:
> finish {ambient 0 diffuse 0 reflection 1}
> in the texture.
>
>
>
>>and see the scene as reflected in the mirror alone.
>
>
> This is a bit tougher...what exactly do you want? To see the reflection
> of the scene, but not the actual scene, and to have the mirror fill the
> entire image? Use no_image on the objects, they will reflect but will be
> invisible to the camera. If you use an orthographic camera, adjusting it
> to exactly contain the mirror is pretty easy, just use the right and up
> vectors to adjust the dimensions. If you want a perspective camera, some
> simple trig will give the correct angle.
>
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