Src/DasherCore/OneDimensionalFilter.cpp

   1 #include "../Common/Common.h"
   2 #include "OneDimensionalFilter.h"
   3
   4 COneDimensionalFilter::COneDimensionalFilter(Dasher::CEventHandler * pEventHandler, CSettingsStore *pSettingsStore, CDasherInterfaceBase *pInterface, CDasherModel *m_pDasherModel)
   5   : CDefaultFilter(pEventHandler, pSettingsStore, pInterface, m_pDasherModel, 4, _("One Dimensional Mode")) {
   6 }
   7
   8 void COneDimensionalFilter::ApplyTransform(myint &iDasherX, myint &iDasherY) {
   9
  10   iLastY = iDasherY;
  11
  12   double disty,circlesize,yfullrange,yforwardrange,angle,ellipse_eccentricity,ybackrange,yb,x;
  13
  14   // The distance between the Y coordinate and the centreline in pixels
  15   disty=(myint)GetLongParameter(LP_OY)-iDasherY;
  16
  17   circlesize=    (myint)GetLongParameter(LP_MAX_Y)/2.5;
  18   yforwardrange= (myint)GetLongParameter(LP_MAX_Y)/3.2; // Was 1.6
  19   yfullrange=    yforwardrange*1.6;
  20   ybackrange=    yfullrange-yforwardrange;
  21   ellipse_eccentricity=6;
  22
  23   if (disty>yforwardrange) {
  24     // If the distance between y-coord and centreline is > radius,
  25     // we should be going backwards, off the top.
  26     yb=(disty-yforwardrange)/ybackrange;
  27
  28     if (yb>1) {
  29       x=0;
  30       iDasherY=myint(GetLongParameter(LP_OY));
  31     }
  32     else {
  33       angle=(yb*3.14159)*(yb+(1-yb)*(ybackrange/yforwardrange/ellipse_eccentricity));
  34
  35       x=(-sin(angle)*circlesize/2)*ellipse_eccentricity;
  36       iDasherY=myint(-(1+cos(angle))*circlesize/2+(myint)GetLongParameter(LP_OY));
  37     }
  38   }
  39   else if (disty <-(yforwardrange)) {
  40     // Backwards, off the bottom.
  41     yb=-(disty+yforwardrange)/ybackrange;
  42
  43     if (yb>1) {
  44       x=0;
  45       iDasherY=myint((myint)GetLongParameter(LP_OY));
  46     }
  47     else {
  48       angle=(yb*3.14159)*(yb+(1-yb)*(ybackrange/yforwardrange/ellipse_eccentricity));
  49
  50       x=(-sin(angle)*circlesize/2)*ellipse_eccentricity;
  51       iDasherY=myint((1+cos(angle))*circlesize/2+(myint)GetLongParameter(LP_OY));
  52     }
  53   }
  54
  55   else {
  56     angle=((disty*3.14159/2)/yforwardrange);
  57     x=cos(angle)*circlesize;
  58     iDasherY=myint(-sin(angle)*circlesize+(myint)GetLongParameter(LP_OY));
  59   }
  60   x=(myint)GetLongParameter(LP_OX)-x;
  61
  62   iDasherX = myint(x);
  63 }
  64