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On Remberance day, I sat right here, watching the ceremonies at the Cenotaph
from my 13th floor perch in New Westminster. When the skirl of bagpipes gave way
to silence, I thought of my dad. And that always brings me to trains. Crunching
through the snow, carrying a coal oil lantern while he, a Carman, checked for
hot-boxes. A special treat for a ten year old.
And that took me to my SD40-2 and the question… how do they do those great
virtual MOC pics? So the downloading and configuing began. Countless false
starts finally lead to a working installation of M3P AddOn and POVRay 3.5. Many
thanks to all who posted hints, tips and tutorials.
Start with something simple, I thought. A few mornings in MLCad resulted in a
virtual model of my 96x96 stud Vancouver Canucks logo, done as it would have
been had I all the right coloured 1x1 bricks. Rendering it reminded me why I
have 3 PC’s at home, but little else.
On to the locomotive. I’ve managed to come up with a version that is not too bad
but needs work. I’ve also come up with some questions.
When I run POVRay on the L3P AddOn file I get two errors when I use LGEO pats:
#declare _6081_dot_dat_clear = #if (QUAL = 0) box { <-40,0,-30>, <40,32,10> }
#else object {
// Brick 2 x 4 x 1 & 1/3 with Curved Top
lg_6081_clear
matrix <0,0,-20/LG_BRICK_WIDTH, -20/LG_BRICK_WIDTH,0,0,
0,-24/LG_BRICK_HEIGHT,0, 0,0,0>
}
#end
This errors our with ‘undeclared identifier lg_6081_clear. I can only resolve it
by deleting the declaration.
#declare _3650a_dot_dat = #if (QUAL = 0) box { <-32.98,-32.98,-8>,
<32.98,32.98,12> } #else object {
// Technic Gear 24 Tooth Crown
lg_3650
matrix <0,0,-20/LG_BRICK_WIDTH, -20/LG_BRICK_WIDTH,0,0,
0,-24/LG_BRICK_HEIGHT,0, 0,0,0>
}
#end
This errors out with undeclared identifier lg_3650
I can correct this by adding the ‘a’ after 3640.
Has any one any suggestions about what is wrong with the first error?
When rendering MLCad part 32009 (Technic Liftarm 1x11.5 Double Bent) using
LGEO, I get a completely different part. It is still a double bent liftarm but
rather than having 1 axle hole and 6 holes on the long axis, it has 1 axle hole
and 7 holes. On the short axis, it has 1 axlehole and 3 holes rather than 1
axlehole and 2 holes.
I could only resolve this by cutting and pasting all of the non-LGEO part files
into the file. Any suggestions?
Finally, I would appreciate any tips for improving the lighting. The camera and
lighting settings for the front view follow:
// Floor:
object {
plane { y, 88 hollow }
texture {
pigment { color rgb <0.8,0.8,0.8> }
finish { ambient 0.4 diffuse 0.4 }
}
}
// Background:
background { color rgb <0,0,1>}
// Camera (Latitude,Longitude,Radius = 15,-135,0)
camera {
#declare PCT = 0; // Percentage further away
#declare STEREO = 0; // Normal view
//#declare STEREO = degrees(atan2(1,12))/2; // Left view
//#declare STEREO = -degrees(atan2(1,12))/2; // Right view
location vaxis_rotate(<-3942.57,-1609.91,3960.84> +
PCT/100.0*<-4166.89,-1578.99,4166.89>,
<6.57949e+006,-3.4726e+007,-6.57949e+006>,STEREO)
sky -y
right -4/3*x
look_at <224.327,-30.917,-206.054> // calculated
angle 10
rotate <0,1e-5,0> // Prevent gap between adjecent quads
//orthographic
}
// Lights:
light_source {
<210,-2612.74,4230.75> // Latitude,Longitude,Radius: 30,180,5024.47
color rgb <.7,.7,.7> shadowless
}
light_source {
<-3128.58,-1818.97,3218> // Latitude,Longitude,Radius: 20,-135,5024.47
color rgb <.7,.7,.7>shadowless
}
light_source {
<-3558.35,-2612.74,-2296.23> // Latitude,Longitude,Radius: 30,-60,5024.47
color rgb <1,1,1>
}
light_source {
<-1965.66,-2612.74,-3888.93> // Latitude,Longitude,Radius: 30,-30,5024.47
color rgb <.7,.7,.7>shadowless
}
The results can be seen at http://www3.telus.net/chuck
Navigate to LEGO Creations>Locomotives and LEGO Creations>Mosaics.
Chucko
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Message has 1 Reply:
 | | Re: Virtual locomotive MOC
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| In lugnet.cad.ray Chuck Kabesh wrote... (...) This is a known error in the LGEO part. Open lg_6081.inc in a text editor. You will see that there are two lines like: #declare lg_6081 = Change the second instance into #declare lg_6081_clear = (...) In (...) (21 years ago, 1-Dec-03, to lugnet.cad.ray)
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