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Can someone tell me what went wrong and how to fix it, please?
The problem only appeared when "Building3" was placed in a difference
statement and only affects the section called "Building3. The part of
the code for the building is included below:
#declare BrickTex = texture {
pigment {brick Tan, NewTan
brick_size <10, 5, 5>
}
normal {brick 1}
normal {granite 0.04}
}
#declare Building = difference {
box{<-50, -50, -50> <50, 50, 50>
texture {BrickTex}
}
box{<-45, -45, -45> <45, 45, 45>}
box {<0,5,50> <-45, -30, 45>}
box {<50, -50, 50> <39, 20, 45>}
}
#declare Building2 = box{<-50, -50, -50> <-150, 50, 150>
texture { BrickTex }
}
#declare Building3 = difference {
box{<50, 50, 50> <100, 50, 0>
texture {BrickTex}
}
box{<50, -45, 45> <95, 45, 5>}
box {<79, -50, 50> <50, 20, 45>}
}
#declare Church = union {
object {Building}
object {Building2}
object {Building3}
}
object {Church}
[Image]
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Leitha & Mark Hyde wrote:
>
> Can someone tell me what went wrong and how to fix it, please?
>
> The problem only appeared when "Building3" was placed in a difference
> statement and only affects the section called "Building3. The part of the
> code for the building is included below:
>
> #declare Building3 = difference {
> box{<50, 50, 50> <100, 50, 0>
>
Is it me, or you intend to have a VERY FINE box in a difference ?
(look at the .y : 50 to 50 : no thickness)
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Leitha & Mark Hyde wrote:
>
> Can someone tell me what went wrong and how to fix it, please?
Jerome is right about the thickness problem, and also :
> #declare Building = difference {
> box{<-50, -50, -50> <50, 50, 50>
> texture {BrickTex}
> }
> box{<-45, -45, -45> <45, 45, 45>}
> box {<0,5,50> <-45, -30, 45>}
> box {<50, -50, 50> <39, 20, 45>}
> }
this is wrong, because you don't give a texture to the "negative"
objects. You should do as follows :
#declare Building = difference {
box{<-50, -50, -50> <50, 50, 50>}
box{<-45, -45, -45> <45, 45, 45>}
box {<0,5,50> <-45, -30, 45>}
box {<50, -50, 50> <39, 20, 45>}
texture {BrickTex}
}
And, in fact, using a difference to define a set of walls is not
a very good thing, as difference is slow to render. You'll do it
better by defining an union of some boxes.
Fabien.
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