X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=libctgraphics%2Fsgp.cpp;h=57904a621f9a64120b4c210ef33db6fd84743438;hb=b361677a2f7d5b443641faec70b057f2a84dc77e;hp=275a955bfbf031b24891351eb25e6e9830d57695;hpb=9f29c8b32c972db1178d6f8551d5cd57ceb67083;p=ctsim.git

diff --git a/libctgraphics/sgp.cpp b/libctgraphics/sgp.cpp
index 275a955..57904a6 100644
--- a/libctgraphics/sgp.cpp
+++ b/libctgraphics/sgp.cpp
@@ -7,7 +7,7 @@
 **  This is part of the CTSim program
 **  Copyright (c) 1983-2001 Kevin Rosenberg
 **
-**  $Id: sgp.cpp,v 1.29 2001/01/28 19:10:18 kevin Exp $
+**  $Id: sgp.cpp,v 1.30 2001/03/10 23:14:16 kevin Exp $
 **
 **  This program is free software; you can redistribute it and/or modify
 **  it under the terms of the GNU General Public License (version 2) as
@@ -175,6 +175,17 @@ SGP::markerNDC (double x, double y)
 void
 SGP::pointNDC (double x, double y)
 {
+  int xp = static_cast<int>(x * (m_iPhysicalXSize - 1) + 0.5);
+  int yp = static_cast<int>(y * (m_iPhysicalYSize - 1) + 0.5);
+  if (m_driver.isWX())
+    yp = m_iPhysicalYSize - yp;
+
+#if HAVE_WXWINDOWS
+    if (m_driver.isWX())
+      m_driver.idWX()->DrawPoint (xp, yp);
+#endif
+  m_iCurrentPhysicalX = xp;
+  m_iCurrentPhysicalY = yp;
 }
 
 
@@ -657,7 +668,6 @@ SGP::pointAbs (double x, double y)
   double xndc = x, yndc = y;
   mc_to_ndc.transformPoint (&xndc, &yndc);
   pointNDC (xndc, yndc);
-  stylusNDC (xndc, yndc, false);            // move to location 
   m_dCurrentWorldX = x;
   m_dCurrentWorldY = y;
 }
@@ -746,31 +756,31 @@ SGP::drawArc (const double r, double start, double stop)
     stop = temp;
   }
 
-  double x = r * cos ((double) start);
-  double y = r * sin ((double) start);
-  moveRel (x, y);          // move from center to start of arc 
+  double xCent = m_dCurrentWorldX;
+  double yCent = m_dCurrentWorldY;
+
+  double x = r * cos (start);
+  double y = r * sin (start);
+  moveAbs (xCent + x, yCent + y);          // move from center to start of arc 
 
-  const double thetaIncrement = (5 * (TWOPI / 360)); 
-  double cosTheta = cos(thetaIncrement);
-  double sinTheta = sin(thetaIncrement);
+  const double thetaIncrement = (5 * (TWOPI / 360));  // 5 degree increments
+  double cosTheta = cos (thetaIncrement);
+  double sinTheta = sin (thetaIncrement);
 
-  double angle, xp, yp;
-  for (angle = start; angle < stop - thetaIncrement; angle += thetaIncrement) {
-    xp = cosTheta * x - sinTheta * y; // translate point by thetaIncrement
-    yp = sinTheta * x + cosTheta * y;
-    lineAbs (xp, yp);
+  for (double angle = start; angle < stop; angle += thetaIncrement) {
+    double xp = cosTheta * x - sinTheta * y; // translate point by thetaIncrement
+    double yp = sinTheta * x + cosTheta * y;
+    lineAbs (xCent + xp, yCent + yp);
     x = xp; y = yp;
   }
 
   double c = cos (stop - angle);
   double s = sin (stop - angle);
-  xp = c * x - s * y;
-  yp = s * x + c * y;
-  lineAbs (xp, yp);
+  double xp = c * x - s * y;
+  double yp = s * x + c * y;
+  lineAbs (xCent + xp, yCent + yp);
 
-  x = r * cos (stop);
-  y = r * sin (stop);
-  moveRel (-x, -y);		// move back to center of circle 
+  moveAbs (xCent, yCent);		// move back to center of circle 
 }