.هذا الرسم المتجهي أُنشئ بواسطة POV-Ray

أنا، مالِك حقوق تأليف ونشر هذا العمل، أجعله في النِّطاق العامِّ، يسري هذا في أرجاء العالم كلِّه. في بعض البلدان، قد يكون هذا التَّرخيص غيرَ مُمكنٍ قانونيَّاً، في هذه الحالة: أمنح الجميع حق استخدام هذا العمل لأي غرض دون أي شرط ما لم يفرض القانون شروطًا إضافية.

This image was created using POV-Ray for Windows, version 3.6. The image was rendered to an 1800 x 1800 square, using 0.3 anti-aliasing.

#include "colors.inc"

background { color White }

global_settings { assumed_gamma 1.0}

camera
  {
  location <0, 0, -25>
  right <1,0,0> up <0,1,0>
  look_at  <0, 0, 0>
  angle 5
  }


light_source
  {
  <0, 20, -50>
  color White
  area_light <5, 0, 0>, <0, 5, 0>, 10, 10  /* very slow, decrease 10 to 2 for experiments */
  adaptive 3
  }


#declare r_tube = 0.08;  // thickness (radius) of tube
#declare num_steps = 48;  // number of spline points
#declare step_size = 1/num_steps;
              

sphere_sweep
  {
  cubic_spline 72,
  <-0.743926,-0.323044,-0.0374538>, r_tube
  <-0.712114,-0.43569,0.0298152>, r_tube
  <-0.657593,-0.539064,0.0973434>, r_tube
  <-0.580001,-0.628497,0.162174>, r_tube
  <-0.480129,-0.698632,0.220002>, r_tube
  <-0.361141,-0.743997,0.265224>, r_tube
  <-0.229443,-0.759909,0.291525>, r_tube
  <-0.0949831,-0.743633,0.292938>, r_tube
  <0.0290111,-0.695571,0.265328>, r_tube
  <0.127664,-0.620327,0.208148>, r_tube
  <0.187943,-0.526887,0.125706>, r_tube
  <0.202792,-0.42621,0.0272863>, r_tube
  <0.17111,-0.32591,-0.0709779>, r_tube
  <0.0972916,-0.227153,-0.144044>, r_tube
  <-0.00303469,-0.130199,-0.167725>, r_tube
  <-0.105695,-0.0395859,-0.134719>, r_tube
  <-0.192521,0.0426878,-0.0584242>, r_tube
  <-0.258908,0.125519,0.0364681>, r_tube
  <-0.306283,0.222655,0.126588>, r_tube
  <-0.332389,0.339841,0.196062>, r_tube
  <-0.332078,0.471357,0.236057>, r_tube
  <-0.302211,0.604663,0.243255>, r_tube
  <-0.243592,0.725428,0.218848>, r_tube
  <-0.160735,0.820618,0.167595>, r_tube
  <-0.0609402,0.880171,0.0968376>, r_tube
  <0.0467134,0.897821,0.0156533>, r_tube
  <0.152292,0.871534,-0.0658683>, r_tube
  <0.245965,0.803746,-0.137469>, r_tube
  <0.31894,0.701332,-0.189551>, r_tube
  <0.364616,0.575224,-0.214088>, r_tube
  <0.379764,0.439493,-0.205788>, r_tube
  <0.365485,0.30926,-0.16329>, r_tube
  <0.327266,0.196744,-0.0903403>, r_tube
  <0.27163,0.10534,0.00298281>, r_tube
  <0.200056,0.0254783,0.0984198>, r_tube
  <0.110533,-0.0587019,0.170319>, r_tube
  <0.00963576,-0.154385,0.19444>, r_tube
  <-0.0823127,-0.256527,0.160722>, r_tube
  <-0.141554,-0.357878,0.0795114>, r_tube
  <-0.154315,-0.455221,-0.0247574>, r_tube
  <-0.118171,-0.545017,-0.12782>, r_tube
  <-0.0372333,-0.619017,-0.213077>, r_tube
  <0.0777866,-0.667792,-0.27036>, r_tube
  <0.211105,-0.685624,-0.295104>, r_tube
  <0.346655,-0.671631,-0.288075>, r_tube
  <0.471388,-0.628678,-0.253863>, r_tube
  <0.576552,-0.561812,-0.199031>, r_tube
  <0.657697,-0.476737,-0.130543>, r_tube
  <0.713605,-0.378719,-0.0546503>, r_tube
  <0.744743,-0.271947,0.0235513>, r_tube
  <0.751811,-0.159612,0.0998334>, r_tube
  <0.73477,-0.0444363,0.170189>, r_tube
  <0.692907,0.0705058,0.230027>, r_tube
  <0.625781,0.18087,0.273654>, r_tube
  <0.534857,0.280625,0.294572>, r_tube
  <0.425349,0.362575,0.286687>, r_tube
  <0.306944,0.420442,0.246406>, r_tube
  <0.19151,0.452695,0.17491>, r_tube
  <0.0866572,0.465806,0.0794595>, r_tube
  <-0.0108419,0.470164,-0.0267027>, r_tube
  <-0.112128,0.467972,-0.127405>, r_tube
  <-0.224385,0.450555,-0.208965>, r_tube
  <-0.344022,0.409211,-0.263201>, r_tube
  <-0.460559,0.342175,-0.287556>, r_tube
  <-0.563557,0.253287,-0.284262>, r_tube
  <-0.646168,0.148681,-0.25848>, r_tube
  <-0.705409,0.0343619,-0.216228>, r_tube
  <-0.740931,-0.084795,-0.162849>, r_tube
  <-0.753536,-0.204989,-0.102349>, r_tube
  <-0.743926,-0.323044,-0.0374538>, r_tube
  <-0.712114,-0.43569,0.0298152>, r_tube
  <-0.657593,-0.539064,0.0973434>, r_tube
  pigment { color rgb <0,0.25,1> }
  finish          
    {
    ambient 0.15
    diffuse 0.85
    brilliance 2
    phong 0.25
    phong_size 7
    }
  }

plane
  {
  <0,0,-1>, -0.38
  pigment { color White }
  finish
    {
    ambient 0.35
    diffuse 0.65
    }
  }