From 3702238d73f393e771abdff92dd3443148f879e7 Mon Sep 17 00:00:00 2001
From: rnv <rnv@opencascade.com>
Date: Wed, 1 Feb 2012 07:43:33 +0000
Subject: [PATCH] Additional fix for the 0021407: [CEA 515] Plot2d Display
 error labels around the point issue.

---
 src/Plot2d/Plot2d.cxx           | 20 ++++++++++++--------
 src/Plot2d/Plot2d.h             |  4 ++--
 src/Plot2d/Plot2d_Curve.cxx     | 12 +++++++-----
 src/Plot2d/Plot2d_PlotItems.cxx |  4 ++--
 4 files changed, 23 insertions(+), 17 deletions(-)

diff --git a/src/Plot2d/Plot2d.cxx b/src/Plot2d/Plot2d.cxx
index b864720b9..efeba138d 100755
--- a/src/Plot2d/Plot2d.cxx
+++ b/src/Plot2d/Plot2d.cxx
@@ -98,19 +98,23 @@ bool Plot2d_Point::deviation(double& min, double& max) const {
 /*!
   Return minimal deviation value.
 */
-double Plot2d_Point::minDeviation() const {
-  if(hasDeviation()) 
-    return deviationPtr[0];
-  return 0.;
+bool Plot2d_Point::minDeviation(double& min) const {
+  if(hasDeviation()) {
+    min = deviationPtr[0];
+    return true;
+  }
+  return false;
 }
 
 /*!
   Return minimal deviation value.
 */
-double Plot2d_Point::maxDeviation() const {
-  if(hasDeviation()) 
-    return deviationPtr[1];
-  return 0.;
+bool Plot2d_Point::maxDeviation(double& max) const {
+  if(hasDeviation()) {
+    max = deviationPtr[1];
+    return true;
+  }
+  return false;
 }
 
 
diff --git a/src/Plot2d/Plot2d.h b/src/Plot2d/Plot2d.h
index 648c81344..a278ec2e5 100755
--- a/src/Plot2d/Plot2d.h
+++ b/src/Plot2d/Plot2d.h
@@ -60,8 +60,8 @@ struct PLOT2D_EXPORT Plot2d_Point
   bool hasDeviation() const;
   void setDeviation(double min, double max);
   void clearDeviation();
-  double minDeviation() const;
-  double maxDeviation() const;
+  bool minDeviation(double& min) const;
+  bool maxDeviation(double& max) const;
 };
 
 typedef QList<Plot2d_Point> pointList;
diff --git a/src/Plot2d/Plot2d_Curve.cxx b/src/Plot2d/Plot2d_Curve.cxx
index 06e264b22..8afc8c1dc 100755
--- a/src/Plot2d/Plot2d_Curve.cxx
+++ b/src/Plot2d/Plot2d_Curve.cxx
@@ -338,9 +338,10 @@ double Plot2d_Curve::getMinY() const
   double aMinY = 1e150;
   pointList::const_iterator aIt;
   double coeff = 0.0;
-  for (aIt = myPoints.begin(); aIt != myPoints.end(); ++aIt) {
-    coeff = (*aIt).minDeviation();
-    aMinY = qMin( aMinY, myScale * (*aIt).y - coeff );
+  for (aIt = myPoints.begin(); aIt != myPoints.end(); ++aIt) {    
+    aMinY = qMin( aMinY, myScale * (*aIt).y );
+    if((*aIt).minDeviation(coeff))
+      aMinY = qMin( aMinY, coeff );
   }
   return aMinY;
 }
@@ -354,8 +355,9 @@ double Plot2d_Curve::getMaxY() const
   pointList::const_iterator aIt;
   double coeff = 0.0;
   for (aIt = myPoints.begin(); aIt != myPoints.end(); ++aIt) {
-    coeff = (*aIt).maxDeviation();
-    aMaxY = qMax( aMaxY, myScale * (*aIt).y + coeff );
+    aMaxY = qMax( aMaxY, myScale * (*aIt).y);
+    if((*aIt).maxDeviation(coeff))
+      aMaxY = qMax( aMaxY, coeff);
   }
   return aMaxY;
 }
\ No newline at end of file
diff --git a/src/Plot2d/Plot2d_PlotItems.cxx b/src/Plot2d/Plot2d_PlotItems.cxx
index 8bdb2a796..cc91401de 100644
--- a/src/Plot2d/Plot2d_PlotItems.cxx
+++ b/src/Plot2d/Plot2d_PlotItems.cxx
@@ -324,8 +324,8 @@ void Plot2d_QwtPlotCurve::draw(QPainter *painter,
       xi = x(i);
       yi = y(i);
       xp = xMap.transform(xi);
-      ytop = yMap.transform(yi + max);
-      ybtm = yMap.transform(yi - min);
+      ytop = yMap.transform(max);
+      ybtm = yMap.transform(min);
       tickl = xp - tickSz;
       tickr = xp + tickSz;
       painter->drawLine(tickl,ytop,tickr,ytop);
-- 
2.39.2