test/bow.cc

   1 // vim:sw=2 makeprg=g++\ -g\ bow.cc\ -o\ bow
   2 #include <iostream.h>
   3 #define PT
   4 // #define STAFFHEIGHT 16.0
   5 #define STAFFHEIGHT 20.0
   6
   7 #define UP 1
   8 #define DOWN (-1)
   9
  10 // mmm
  11 #define STANDALONE
  12
  13 #include <math.h>
  14
  15 typedef void *Paper_def;
  16
  17 bool experimental_features_global_b = true;
  18 //bool experimental_features_global_b = false;
  19
  20 #include "bezier.hh"
  21
  22 #if 0
  23 #include "offset.cc"
  24 #include "interval.cc"
  25 #endif
  26
  27 #include "misc.cc"
  28 #include "bezier.cc"
  29
  30 struct Point
  31 {
  32   Real x, y;
  33 };
  34
  35 void
  36 out (Bezier_bow& b)
  37 {
  38   cout << "save dx,dy,x,y;\n";
  39   for (int i = 0; i < 4; i++)
  40       cout << "z" << i + 1 << " = (" << b.control_[i].x ()
  41         << ", " << b.control_[i].y () << ");\n";
  42   for (int i = 1; i < 3; i++)
  43       cout << "z" << i + 4 << " = (" << b.return_[i].x ()
  44         << ", " << b.return_[i].y () << ");\n";
  45 #if 0
  46   cout << "pickup pencircle scaled 0.5pt#;\n";
  47   cout << "draw z2--z3; draw (50,0)-- 0.5[z2,z3];\n";
  48 #endif
  49   cout << "pickup pencircle scaled 4pt#;\n";
  50   for (int i = 0; i < 4; i++)
  51     cout << "drawdot z" << i + 1 << ";\n";
  52   cout << "path boogje;\n";
  53 #if 0
  54   cout << "pickup pencircle scaled 0.4pt#;\n";
  55   cout << "boogje=z1..controls z2 and z3..z4..controls z5 and z6..cycle;\n";
  56   cout << "filldraw boogje;\n";
  57 #else
  58   cout << "pickup pencircle scaled 1.6pt#;\n";
  59   cout << "boogje=z1..controls z2 and z3..z4;\n";
  60   cout << "draw boogje;\n";
  61   cout << "pickup pencircle scaled 0.4pt#;\n";
  62   cout << "boogje:=z4..controls z5 and z6..z1;\n";
  63   cout << "draw boogje;\n";
  64 #endif
  65   cout << "showit; shipit;clearit;" << endl;
  66 }
  67
  68 void
  69 bow (Point* points, int n, int d)
  70 {
  71   Array<Offset> notes;
  72   for (int i = 0; i < n; i++)
  73     notes.push (Offset (points[i].x, points[i].y));
  74 #if 1
  75   cout << "pickup pencircle scaled 8pt#;\n";
  76 #else
  77   cout << "pickup pencircle scaled 2pt#;\n";
  78 #endif
  79   for (int i = 0; i < n; i++)
  80     cout << "drawdot (" << notes[i].x () << ", " << notes[i].y () << ");\n";
  81   Bezier_bow b (0);
  82   b.set (notes, d);
  83   b.calc ();
  84   out (b);
  85   return;
  86 }
  87
  88 int
  89 main ()
  90 {
  91   //cout.unsetf(ios::scientific);
  92   cout.setf(ios::fixed);
  93 #if 1
  94   bow ((Point[6]){ 0,0, 20,0, 40,0, 60,0, 80,0, 100,1 }, 6, 1);
  95   bow ((Point[6]){ 0,0, 20,0, 40,30, 60,30, 80,0, 100,1 }, 6, 1);
  96   bow ((Point[6]){ 0,0, 20,0, 40,0, 60,0, 80,10, 100,1 }, 6, 1);
  97   bow ((Point[6]){ 0,0, 20,0, 40,0, 60,0, 80,40, 100,1 }, 6, 1);
  98   bow ((Point[6]){ 0,0, 20,0, 40,0, 60,40, 80,0, 100,1 }, 6, 1);
  99   bow ((Point[6]){ 0,10, 20,20, 40,0, 60,40, 80,20, 100,50 }, 6, 1);
 100   bow ((Point[6]){ 0,10, 20,20, 40,0, 60,40, 80,20, 100,50 }, 6, -1);
 101   bow ((Point[6]){ 0,10, 20,20, 40,0, 60,40, 80,20, 100,100 }, 6, -1);
 102   bow ((Point[9]){ 0,0, 20,0, 40,-80, 60,0, 80,0, 100,0, 120,0, 140,0, 160,-1 }, 9, -1);
 103   bow ((Point[9]){ 0,0, 40,0, 80,180, 120,0, 160,0, 200,0, 240,0, 280,0, 320,1 }, 9, 1);
 104   bow ((Point[9]){
 105   {0, 0},
 106   {19.10645980317711, 1},
 107   {29.402919606354207, 28},
 108   {55.389379409531308, 1},
 109   {73.530839212708514, 1},
 110   {91.672299015885727, 1},
 111   {111.35901367452229, 1},
 112   {131.04572833315891, 1},
 113   {145.76744299179552, 0}
 114   },
 115   9, 1);
 116   bow ((Point[6]){ 0,0, 20,0, 40,0, 60,0, 80,0, 100,40 }, 6, 1);
 117   bow ((Point[2]){ 0,0, 20,0 }, 2, 1);
 118   bow ((Point[2]){ 0,0, 20,-10 }, 2, 1);
 119   bow ((Point[6]){ 0,0, 20,0, 40,0, 60,0, 80,0, 100,100 }, 6, 1);
 120
 121   bow ((Point[6]){ 0,0, 20,-10, 40,20, 60,-20, 80,20, 100,0 }, 6, 1);
 122   bow ((Point[6]){ 0,0, 20,-10, 40,20, 60,-20, 80,20, 100,0 }, 6, -1);
 123   bow ((Point[6]){ 0,0, 20,20, 40,0, 60,40, 80,20, 100,50 }, 6, 1);
 124   bow ((Point[6]){ 0,0, 20,20, 40,0, 60,40, 80,20, 100,50 }, 6, -1);
 125   bow ((Point[6]){ 0,0, 20,20, 40,0, 60,40, 80,20, 100,100 }, 6, -1);
 126
 127   bow ((Point[6]){ 0,-10, 20,-20, 40,0, 60,-40, 80,-20, 100,-50 }, 6, 1);
 128
 129   bow ((Point[6]){ 0,10, 20,20, 40,0, 60,40, 80,20, 100,50 }, 6, -1);
 130 #endif
 131
 132 #if 1
 133   //clipping
 134
 135   bow ((Point[6]){ 0,0, 20,60, 40,0, 60,0, 80,0, 100,1 }, 6, 1);
 136
 137   bow ((Point[6]){ 0,1, 20,0, 40,0, 60,0, 80,60, 100,0 }, 6, 1);
 138   bow ((Point[6]){ 0,0, 20,20, 40,40, 60,60, 80,140, 100,100 }, 6, 1);
 139   bow ((Point[6]){ 0,0, 20,20, 40,40, 60,60, 80,20, 100,100 }, 6, -1);
 140   bow ((Point[6]){ 0,0, 20,-20, 40,-40, 60,-60, 80,-20, 100,-100 }, 6, 1);
 141   bow ((Point[6]){ 0,0, 20,-20, 40,-40, 60,-60, 80,-140, 100,-100 }, 6, -1);
 142   bow ((Point[7]){ 0,0, 20,40, 100,0, 150,0, 200,0, 280,40, 300,0 }, 7, 1);
 143   bow ((Point[7]){ 0,0, 20,-40, 100,0, 150,0, 200,0, 280,-40, 300,0 }, 7, -1);
 144   bow ((Point[7]){ 0,20, 20,40, 100,0, 150,0, 200,0, 280,40, 300,20 }, 7, 1);
 145   bow ((Point[3]){ 0,0, 10,10, 20,-20 }, 3, 1);
 146
 147   bow ((Point[4]){ 0,0, 33,100, 75,0, 100,100 }, 4, -1);
 148   bow ((Point[4]){ 0,0, 33,-100, 75,0, 100,-100 }, 4, 1);
 149 #endif
 150
 151 #if 1
 152   // infeasible
 153
 154   bow ((Point[6]){ 0,0, 20,20, 40,40, 60,60, 80,140, 100,100 }, 6, 1);
 155   bow ((Point[6]){ 0,0, 20,-40, 40,0, 60,20, 80,20, 100,40 }, 6, -1);
 156   bow ((Point[6]){ 0,0, 20,-20, 40,-20, 60,-20, 80,-80, 100,-40 }, 6, -1);
 157   bow ((Point[6]){ 0,0, 20,-20, 40,-40, 60,-60, 80,-140, 100,-100 }, 6, -1);
 158   bow ((Point[6]){ 0,0, 20,20, 40,40, 60,60, 80,140, 100,100 }, 6, 1);
 159 #endif
 160
 161   cout << "\\end" << endl;
 162
 163   return 0;
 164 }
 165