User:Le Forgeron/rational bezier patch - Revision history

Le Forgeron at 06:55, 18 August 2018

2018-08-18T06:55:34Z

Le Forgeron: /* rational_bezier_patch */

2018-07-04T08:31:03Z

rational_bezier_patch

Le Forgeron: Created page with "{{User:Le_Forgeron/HgPovray38/soon}} == rational_bezier_patch == syntax is

 rational_bezier_patch {   Usize, Vsize [accuracy Precision]   ULINE (repeated Vsize time)  ..."

2018-07-04T08:27:10Z

Created page with "{{User:Le_Forgeron/HgPovray38/soon}} == rational_bezier_patch == syntax is <pre> rational_bezier_patch { Usize, Vsize [accuracy Precision] ULINE (repeated Vsize time) ..."

New page

{{User:Le_Forgeron/HgPovray38/soon}}

== rational_bezier_patch ==

syntax is
<pre>
rational_bezier_patch {
Usize, Vsize [accuracy Precision]
ULINE (repeated Vsize time)
[OBJECTS_MODIFIERS...]
}

ULINE := WEIGHTED_POINT (repeated Usize time)
WEIGHTED_POINT := < X, Y, Z, W >
</pre>
[[Image:LeForgeronRBP.png|Rational_Bezier_Patch]]
<source lang="pov">
#version 3.7;
global_settings{ assumed_gamma 1.0 }

camera {location -30*z
direction z
up y
right x*image_width/image_height
angle 25
rotate 40*x
}

#include "colors.inc"
#include "woods.inc"
cylinder { -6*y, 4*y, 1 open texture { pigment { White } } }

#declare RA = seed(122);

light_source { -100*z, 1 }
light_source { 100*y, 1 }
light_source { 100*y-100*z, 1 }
light_source { 100*y-100*x, 1 }

plane { y, -6
texture { checker texture { pigment { Yellow } } texture { pigment { Green } } }
}
#declare Texture = texture { T_Wood5 rotate 90*x };
#declare R1=2;
#declare R2=3;
#declare R3=4;
#declare R4=5;
#declare R5=6;
#declare S=1/5;
#declare N=8/S;
rational_bezier_patch{ 5,N+1 // accuracy 0.0000001
#for(i,-4,4,S)
#local In=rand(RA);
<(R1+In)*cos(i),i,(R1+In)*sin(i),1>
<(R2+In/2)*cos(i),i+2*rand(RA),(R2+In/2)*sin(i),0.707>
<R3*cos(i),i,R3*sin(i),1>
<(R4-In/2)*cos(i),i-2*rand(RA),(R4-In/2)*sin(i),0.707>
<(R5-In)*cos(i),i,(R5-In)*sin(i),1>
#end
texture { uv_mapping Texture scale <1/4, 1/34,1> }
}
</source>

← Older revision		Revision as of 06:55, 18 August 2018
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−	{{User:Le_Forgeron/HgPovray38/~~soon~~}}	+	{{User:Le_Forgeron/HgPovray38/available}}

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 == rational_bezier_patch ==
+=== syntax ===
 syntax is
 <pre>
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 WEIGHTED_POINT := < X, Y, Z, W >
 </pre>
 [[Image:LeForgeronRBP.png|Rational_Bezier_Patch]]
 <source lang="pov">
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+}
 </source>