This is another shadow-trick that gives a solid object a colored shadow
(based on the 'impossible shadow')

sphere {
 0,1
 pigment {rgbf <1,0,0,0>}
 finish {specular .5 brilliance 1.5}
 no_shadow
}
sphere {
 0,.9999
 pigment {rgbf <1,0,0,1>}
 finish {specular .5 brilliance 1.5}
}

plane {
 x,0
 translate -x*2
 pigment {checker color rgb .5 color rgb .7}
 finish {diffuse 1}
}
light_source {
 <5000,0,0>
 rgb 1}
camera {
 location <2,1,-5>
 look_at <-2,0,0>
}

Post a reply to this message