Difference between revisions of "User:Le Forgeron/polyline"

From POV-Wiki
Jump to navigation Jump to search
 
(3 intermediate revisions by the same user not shown)
Line 1: Line 1:
= Polyline =
+
{{User:Le_Forgeron/HgPovray38/available}}
 +
 
 +
== Polyline ==
  
 
Similar to polygon, but using the absolute value of the winding number instead of odd-even filling.
 
Similar to polygon, but using the absolute value of the winding number instead of odd-even filling.
  
== Syntax ==
+
=== Syntax ===
  
 
<source lang="txt">
 
<source lang="txt">
Line 12: Line 14:
 
</source>
 
</source>
  
== Winding number ==
+
=== Winding number ===
 +
 
 +
Only the absolute number is considered (the notions of clockwise & anti-clockwise vary with the orientation of the system).
  
 
[[Image:LeForgeronPolyline.png|"winding number"]]
 
[[Image:LeForgeronPolyline.png|"winding number"]]

Latest revision as of 11:34, 24 June 2018

Polyline

Similar to polygon, but using the absolute value of the winding number instead of odd-even filling.

Syntax

 polyline { \(Px [,]\)\{3,n\} range { \(<low,high>\)\{1,m\} } OBJECT_MODIFIERS }

    n coplanars points Px 
    <low,high> specification of interval for winding number

Winding number

Only the absolute number is considered (the notions of clockwise & anti-clockwise vary with the orientation of the system).

"winding number"

#declare A=<0,3,0>;
#declare B=<6,3,0>;
#declare C=<4.5,1,0>;
#declare D=<7,2,0>;
#declare E=<4.5,6,0>;
#declare F=<7,4,0>;
#declare G=<2,4,0>;
#declare H=<4,6,0>;
#declare I=<4,0,0>;
#declare J=<5,0,0>;
#declare K=<5,8,0>;

polyline
{
  A, B, C, D,
  E, F, G, H,
  I, J, K, A
  range { 2 }
  texture { pigment { color srgb 0.5 }}
}
polyline
{
  A, B, C, D,
  E, F, G, H,
  I, J, K, A
  range { 1 }
  texture { pigment { color srgb 0.75 }}
}