二種類の雲を使って空を造ります。
//**********************************************************************************
#local Cv2=<0.850, 0.850, 0.850>;
#local Cv3=<0.750, 0.750, 0.750>;
#local Cv4=<0.298, 0.402, 0.402>;
#local P_cloud_a =
pigment { wrinkles turbulence 0.65 octaves 6 omega 0.7 lambda 2
color_map { [ 0.0,0.1 color rgb Cv2 color rgb Cv3 ]
[ 0.1,0.5 color rgb Cv3 color rgb Cv4 ]
[ 0.5,1.001 color rgb Cv4 color rgb Cv4 ] } scale <6,1,6> }
//
#local Cv5=<0.552, 0.600, 0.648>;
#local Cv6=<0.215, 0.285, 0.285>;
#local Cv7=<0.120, 0.180, 0.180>;
#local P_cloud_b =
pigment { bozo phase 0.92 turbulence 0.65 octaves 6 omega 0.7 lambda 2
color_map { [ 0.0,0.1 color rgb Cv2 color rgb Cv5 ]
[ 0.1,0.5 color rgb Cv5 color rgb Cv6 ]
[ 0.5,1.001 color rgb Cv6 color rgb Cv7 ] } scale <6,4,6> }
//
#local S_cloud =
sky_sphere {
pigment { gradient y
pigment_map { [ 0.01 color rgb <0.850, 0.749, 0.090> ]
[ 0.25 P_cloud_a scale 0.25 rotate 5*z ]
[ 0.60 P_cloud_b scale <0.25,0.15,0.25> rotate 10*z ] } }
pigment { P_cloud_b }
}
//
sky_sphere { S_cloud scale 0.2 rotate 180*y }
//**********************************************************************************
