The Ecere SDK - sdk/blob - samples/guiAndGfx/mekano/mekanodisplay.ec

   1 import "mekanopolygon"
   2
   3 define COLORSPRING = orange;
   4 define COLORPOLY   = magenta;
   5 define COLORBOX    = blue;
   6 define COLORCROSS  = lime;
   7
   8 class MekanoDisplay
   9 {
  10    Surface surface;
  11
  12 public:
  13    void drawPolygon(Vector2D position, MekanoPolygon polygon)
  14    {
  15       List<MekanoPoint> points=polygon.points;
  16       if(points.count > 1)
  17       {
  18          MekanoPoint point1, point2 = null, firstpoint = null;
  19          Vector2D point_pos1, point_pos2;
  20          bool first = true;
  21
  22          surface.foreground = COLORPOLY;
  23
  24          for(p : points)
  25          {
  26             if(first)
  27             {
  28                point2 = firstpoint = p;
  29                first = false;
  30             }
  31             else
  32             {
  33                point1 = point2;
  34                point2 = p;
  35                point_pos1=point1.localPosition;
  36                point_pos2=point2.localPosition;
  37
  38                surface.DrawLine((int)(position.x+point_pos1.x), (int)(position.y+point_pos1.y),
  39                   (int)(position.x+point_pos2.x), (int)(position.y+point_pos2.y));
  40             }
  41          }
  42          point_pos1=point2.localPosition;
  43          point_pos2=firstpoint.localPosition;
  44          surface.DrawLine((int)(position.x+point_pos1.x), (int)(position.y+point_pos1.y),
  45             (int)(position.x+point_pos2.x), (int)(position.y+point_pos2.y));
  46       }
  47    }
  48
  49    void drawBox(Vector2D position, int width)
  50    {
  51       surface.foreground = COLORBOX;
  52       surface.Rectangle(
  53          (short)position.x-width/2, (short)position.y-width/2,
  54          (short)position.x+width/2, (short)position.y+width/2);
  55    }
  56
  57    void drawCrossHair(Vector2D position, int width)
  58    {
  59       surface.foreground = COLORCROSS;
  60       surface.HLine((short)position.x-width/2, (short)position.x+width/2,
  61          (short)position.y);
  62       surface.VLine((short)position.y-width/2, (short)position.y+width/2,
  63          (short)position.x);
  64    }
  65
  66    void drawSpring(Vector2D pos1, Vector2D pos2, int zigs)
  67    {
  68       int t;
  69       float lzig, h = 10.0;
  70       Vector2D d=pos1;
  71       Vector2D o;
  72       Vector2D u, n;
  73       Vector2D a1, a2;
  74
  75       surface.foreground = COLORSPRING;
  76
  77       o.subtract(pos2, pos1);
  78
  79       u=o.unit;
  80       n=o.normal;
  81       lzig=o.length/zigs;
  82
  83       // a1=u*(lzig*1/4)+n*h;
  84       {
  85          Vector2D t1, t2;
  86          t1.scale(u, lzig*1/4);
  87          t2.scale(n, h);
  88          a1.add(t1, t2);
  89       }
  90
  91       // a2=u*(lzig*2/4)-n*h*2.0;
  92       {
  93          Vector2D t1, t2;
  94          t1.scale(u, lzig*2/4);
  95          t2.scale(n, h*2.0f);
  96          a2.subtract(t1, t2);
  97       }
  98
  99       for (t=0; t<zigs; t++)
 100       {
 101          Vector2D end;
 102          end.add(d, a1);
 103          surface.DrawLine((int)d.x, (int)d.y, (int)end.x, (int)end.y);
 104          d = end;
 105
 106          end.add(d, a2);
 107          surface.DrawLine((int)d.x, (int)d.y, (int)end.x, (int)end.y);
 108          d = end;
 109
 110          end.add(d, a1);
 111          surface.DrawLine((int)d.x, (int)d.y, (int)end.x, (int)end.y);
 112          d = end;
 113       }
 114    }
 115 }