a little tidy

bicubic_demo.pov

@@ -1,65 +0,0 @@
-  #version 3.7;
-  global_settings { assumed_gamma 2.2 }
-  #include "colors.inc"
-
-  background {rgb <1,0.9,0.9>}
-  camera {right 1.78*x location <1.6,5,-6> look_at <1.5,0,1.5> angle 40}
-  light_source {<500,500,-500> rgb 1 }
-
-  #declare B11=<0,0,3>; #declare B12=<1,0,3>; //
-  #declare B13=<2,0,3>; #declare B14=<3,0,3>; // row 1
-
-  #declare B21=<0,0,2>; #declare B22=<1,0,2>; //
-  #declare B23=<2,0,2>; #declare B24=<3,0,2>; // row 2
-
-  #declare B31=<0,0,1>; #declare B32=<1,0,1>; //
-  #declare B33=<2,0,1>; #declare B34=<3,0,1>; // row 3
-
-  #declare B41=<0,0,0>; #declare B42=<1,0,0>; //
-  #declare B43=<2,0,0>; #declare B44=<3,0,0>; // row 4
-
-  bicubic_patch {
-     type 1 flatness 0.001
-     u_steps 4 v_steps 4
-     uv_vectors
-     <0,0> <1,0> <1,1> <0,1>
-     B11, B12, B13, B14
-     B21, B22, B23, B24
-     B31, B32, B33, B34
-     B41, B42, B43, B44
-     uv_mapping
-     texture {
-        pigment {
-           checker 
-           color rgbf <1,1,1,0.5> 
-           color rgbf <0,0,1,0.7> 
-           scale 1/3
-        }
-        finish {phong 0.6 phong_size 20}
-     }
-     no_shadow
-  }
-
-
-
-  #declare Points=array[16]{
-   B11, B12, B13, B14
-   B21, B22, B23, B24
-   B31, B32, B33, B34
-   B41, B42, B43, B44
-  }
-  #declare I=0;
-  #while (I<16)
-     sphere {
-        Points[I],0.1 
-        no_shadow 
-        pigment{
-           #if (I=0|I=3|I=12|I=15)
-              color rgb <1,0,0>
-           #else
-              color rgb <0,1,1>
-           #end
-        }
-     }
-     #declare I=I+1;
-  #end

chain_loop.pov

@@ -1,67 +1,68 @@
-  #version 3.7;
-  #include "colors.inc"
-  #include "rand.inc"
+#version 3.7;
+#include "colors.inc"
+#include "rand.inc"
 
-  global_settings {
-    assumed_gamma 1.8
+global_settings {
+  assumed_gamma 1.8
+}
+
+camera {
+  right 1.78*x
+  location <-25, -75.1, -60>
+  look_at 0.1
+  angle 30
+}
+
+background { color rgb <.25, .63, 1> }
+
+light_source { <300, 300, -1000> White }
+
+#declare half_torus = difference {
+  torus {
+    4,1
+    sturm
+    rotate x*-90  // so we can see it from the top
   }
+  box { <-5, -5, -1>, <5, 0, 1> }
+}
+#declare chain_segment = cylinder { <0,4,0>, <0,-4,0>, 1  }
 
-  camera {
-    right 1.78*x
-    location <-25, -75.1, -60>
-    look_at 0.1
-    angle 30
+#declare flip_it = x*180;
+#declare torus_trans = 8;
+#declare link_trans = torus_trans*2-2*y;
+
+#declare chain_texture = texture {
+  pigment { color rgb <.49, .56, .59> }
+  finish {
+    ambient .1
+    diffuse .4
+    reflection .35
+    specular 1
+    metallic
   }
+}
 
-  background { color rgb <.46, .09, .06> }
+#declare chain_link = union {
+  object  { half_torus                     translate  y*torus_trans/2 }
+  object  { half_torus     rotate flip_it  translate -y*torus_trans/2 }
+  object  { chain_segment                  translate  x*torus_trans/2 }
+  object  { chain_segment                  translate -x*torus_trans/2 }
+  translate y*60
+}
 
-  light_source { <300, 300, -1000> White }
+#declare chain = union {
+  #declare I = 0;
+  #while(I <= 8)
+    #declare R = mod(I,2);
+    object { chain_link translate -y*link_trans*I rotate y*( (90*R) + ( RRand(-30, 30, 1 ) ) ) }
+    #declare I = I + 1;
+  #end
+}
 
-  #declare half_torus = difference {
-    torus {
-      4,1
-      sturm
-      rotate x*-90  // so we can see it from the top
-    }
-    box { <-5, -5, -1>, <5, 0, 1> }
-  }
-  #declare chain_segment = cylinder { <0,4,0>, <0,-4,0>, 1  }
 
-  #declare flip_it = x*180;
-  #declare torus_trans = 8;
-  #declare link_trans = torus_trans*2-2*y;
-
-  #declare chain_texture = texture {
-    pigment { color rgb <.49, .56, .59> }
-    finish {
-      ambient .1
-      diffuse .4
-      reflection .35
-      specular 1
-      metallic
-    }
-  }
-
-  #declare chain_link = union {
-    object  { half_torus                     translate  y*torus_trans/2 }
-    object  { half_torus     rotate flip_it  translate -y*torus_trans/2 }
-    object  { chain_segment                  translate  x*torus_trans/2 }
-    object  { chain_segment                  translate -x*torus_trans/2 }
-    translate y*60
-  }
-
-  #declare chain = union {
-    #declare I = 0;
-    #while(I <= 8)
-      #declare R = mod(I,2);
-      object { chain_link translate -y*link_trans*I rotate y*( (90*R) + ( RRand(-30, 30, 1 ) ) ) }
-      #declare I = I + 1;
-    #end
-  }
-
-  
 //======= RENDER
-  object { chain scale .45 texture { chain_texture } }
-  object { chain scale .45 texture { chain_texture } translate < 10, -10, -20 > rotate y*20 }
-  object { chain scale .45 texture { chain_texture } translate < 10, 30, 20 > rotate y*30 }
+object { chain scale .45 texture { chain_texture } }
+object { chain scale .45 texture { chain_texture } translate < 10, -10, -20 > rotate y*20 }
+object { chain scale .45 texture { chain_texture } translate < 18, -30, -20 > rotate y*22 }
+object { chain scale .45 texture { chain_texture } translate < 10, 30, 20 > rotate y*30 }
 

povray.ini

@@ -4,15 +4,15 @@
 ;
 ;                         SAMPLE POVRAY.INI FILE
 ;
-;  The general form of the options is "Variable=value".  Everything 
-;  between the equals sign and the end of the line is considered part 
-;  of the value.  The spacing and layout is free-form but only one option 
-;  per line is allowed.  Variables and values are not case-sensitive.  
+;  The general form of the options is "Variable=value".  Everything
+;  between the equals sign and the end of the line is considered part
+;  of the value.  The spacing and layout is free-form but only one option
+;  per line is allowed.  Variables and values are not case-sensitive.
 ;
 ;  Note: characters after a semi-colon are treated as a comment
 ;
 ;  Traditional POV-Ray switches beginning with + or - are also allowed
-;  and they may be given with more than one switch per line.  
+;  and they may be given with more than one switch per line.
 ;
 ;  Add your own options at the bottom and/or edit these to suit. See the
 ;  general documentation for full instructions on how to use INI options.
@@ -20,11 +20,11 @@
 ; Width of image in pixels.  Accepts integer values.
 ;Width = 800
 Width = 1280
- 
+
 ; Height of image in pixels.  Accepts integer values.
 ;Height = 600
 Height = 720
- 
+
 ; Sets minimum number of objects before auto bounding kicks in.
 Bounding_Threshold = 3
 ;
@@ -56,9 +56,9 @@ Verbose=On
 ;; found in the current directory.  New directories are added to the
 ;; search path, up to a maximum of 25.
 
-Library_Path="/usr/local/Cellar/povray/3.7.0.0/share/povray-3.7"
-Library_Path="/usr/local/Cellar/povray/3.7.0.0/share/povray-3.7/ini"
-Library_Path="/usr/local/Cellar/povray/3.7.0.0/share/povray-3.7/include"
+Library_Path="/usr/local/share/povray-3.7"
+Library_Path="/usr/local/share/povray-3.7/ini"
+Library_Path="/usr/local/share/povray-3.7/include"
 Library_Path="./inc"
 
 ;; File output type control.
@@ -77,5 +77,3 @@ Dither_Method=B4
 
 Antialias=true
 Sampling_Method=2
-
-

tuts/bicubic_demo.pov

@@ -0,0 +1,65 @@
+#version 3.7;
+global_settings { assumed_gamma 2.2 }
+#include "colors.inc"
+
+background {rgb <1,0.9,0.9>}
+camera {right 1.78*x location <1.6,5,-6> look_at <1.5,0,1.5> angle 40}
+light_source {<500,500,-500> rgb 1 }
+
+#declare B11=<0,0,3>; #declare B12=<1,0,3>; //
+#declare B13=<2,0,3>; #declare B14=<3,0,3>; // row 1
+
+#declare B21=<0,0,2>; #declare B22=<1,0,2>; //
+#declare B23=<2,0,2>; #declare B24=<3,0,2>; // row 2
+
+#declare B31=<0,0,1>; #declare B32=<1,0,1>; //
+#declare B33=<2,0,1>; #declare B34=<3,0,1>; // row 3
+
+#declare B41=<0,0,0>; #declare B42=<1,0,0>; //
+#declare B43=<2,0,0>; #declare B44=<3,0,0>; // row 4
+
+bicubic_patch {
+   type 1 flatness 0.001
+   u_steps 4 v_steps 4
+   uv_vectors
+   <0,0> <1,0> <1,1> <0,1>
+   B11, B12, B13, B14
+   B21, B22, B23, B24
+   B31, B32, B33, B34
+   B41, B42, B43, B44
+   uv_mapping
+   texture {
+      pigment {
+         checker
+         color rgbf <1,1,1,0.5>
+         color rgbf <0,0,1,0.7>
+         scale 1/3
+      }
+      finish {phong 0.6 phong_size 20}
+   }
+   no_shadow
+}
+
+
+
+#declare Points=array[16]{
+ B11, B12, B13, B14
+ B21, B22, B23, B24
+ B31, B32, B33, B34
+ B41, B42, B43, B44
+}
+#declare I=0;
+#while (I<16)
+   sphere {
+      Points[I],0.1
+      no_shadow
+      pigment{
+         #if (I=0|I=3|I=12|I=15)
+            color rgb <1,0,0>
+         #else
+            color rgb <0,1,1>
+         #end
+      }
+   }
+   #declare I=I+1;
+#end