Update plot module

modules/plot/include/opencv2/plot.hpp

@@ -87,6 +87,7 @@ namespace cv
             CV_WRAP virtual void setShowGrid(bool needShowGrid) = 0;
             CV_WRAP virtual void setShowText(bool needShowText) = 0;
             CV_WRAP virtual void setGridLinesNumber(int gridLinesNumber) = 0;
+            CV_WRAP virtual void setInvertOrientation(bool _invertOrientation) = 0;
             /**
              * @brief Sets the index of a point which coordinates will be printed on the top left corner of the plot (if ShowText flag is true).
              *
@@ -99,19 +100,17 @@ namespace cv
              * @brief Creates Plot2d object
              *
              * @param data \f$1xN\f$ or \f$Nx1\f$ matrix containing \f$Y\f$ values of points to plot. \f$X\f$ values
-             * @param _invertOrientation true means the y axis is inverted
              * will be equal to indexes of correspondind elements in data matrix.
              */
-            CV_WRAP static Ptr<Plot2d> create(InputArray data, bool _invertOrientation=false);
+            CV_WRAP static Ptr<Plot2d> create(InputArray data);
 
             /**
              * @brief Creates Plot2d object
              *
              * @param dataX \f$1xN\f$ or \f$Nx1\f$ matrix \f$X\f$ values of points to plot.
              * @param dataY \f$1xN\f$ or \f$Nx1\f$ matrix containing \f$Y\f$ values of points to plot.
-             * @param _invertOrientation true means the y axis is inverted
              */
-            CV_WRAP static Ptr<Plot2d> create(InputArray dataX, InputArray dataY, bool _invertOrientation=false);
+            CV_WRAP static Ptr<Plot2d> create(InputArray dataX, InputArray dataY);
         };
     //! @}
     }

modules/plot/samples/plot_demo.cpp

@@ -6,13 +6,14 @@ using namespace cv;
 
 int main()
 {
-    Mat data_x(1, 50, CV_64F);
-    Mat data_y(1, 50, CV_64F);
+    Mat data_x( 1, 51, CV_64F );
+    Mat data_y( 1, 51, CV_64F );
 
-    for (int i = 0; i < 50; i++)
+    for ( int i = 0; i < data_x.cols; i++ )
     {
-        data_x.at<double>(0, i) = (i - 25);
-        data_y.at<double>(0, i) = (i - 25)*(i - 25)*(i - 25);
+        double x = ( i - data_x.cols / 2 );
+        data_x.at<double>( 0, i ) = x;
+        data_y.at<double>( 0, i ) = x * x * x;
     }
 
     std::cout << "data_x : " << data_x << std::endl;
@@ -20,15 +21,20 @@ int main()
 
     Mat plot_result;
 
-    Ptr<plot::Plot2d> plot = plot::Plot2d::create(data_x, data_y);
+    Ptr<plot::Plot2d> plot = plot::Plot2d::create( data_x, data_y );
     plot->render(plot_result);
 
-    imshow("default orientation", plot_result);
+    imshow( "The plot rendered with default visualization options", plot_result );
 
-    plot = plot::Plot2d::create(data_x, data_y,true);
-    plot->render(plot_result);
+    plot->setShowText( false );
+    plot->setShowGrid( false );
+    plot->setPlotBackgroundColor( Scalar( 255, 200, 200 ) );
+    plot->setPlotLineColor( Scalar( 255, 0, 0 ) );
+    plot->setPlotLineWidth( 2 );
+    plot->setInvertOrientation( true );
+    plot->render( plot_result );
 
-    imshow("inverted orientation", plot_result);
+    imshow( "The plot rendered with some of custom visualization options", plot_result );
     waitKey();
 
     return 0;

modules/plot/src/plot.cpp

@@ -57,9 +57,8 @@ namespace cv
         {
             public:
 
-            Plot2dImpl(InputArray plotData, bool _invertOrientation)
+            Plot2dImpl(InputArray plotData)
             {
-                invertOrientation = _invertOrientation;
                 Mat _plotData = plotData.getMat();
                 //if the matrix is not Nx1 or 1xN
                 if(_plotData.cols > 1 && _plotData.rows > 1)
@@ -85,9 +84,8 @@ namespace cv
 
             }
 
-            Plot2dImpl(InputArray plotDataX_, InputArray plotDataY_, bool _invertOrientation)
+            Plot2dImpl(InputArray plotDataX_, InputArray plotDataY_)
             {
-                invertOrientation = _invertOrientation;
                 Mat _plotDataX = plotDataX_.getMat();
                 Mat _plotDataY = plotDataY_.getMat();
                 //f the matrix is not Nx1 or 1xN
@@ -134,6 +132,10 @@ namespace cv
             {
                 plotLineWidth = _plotLineWidth;
             }
+            void setInvertOrientation(bool _invertOrientation)
+            {
+                invertOrientation = _invertOrientation;
+            }
             void setNeedPlotLine(bool _needPlotLine)
             {
                 needPlotLine = _needPlotLine;
@@ -270,7 +272,7 @@ namespace cv
             double plotMinY_plusZero;
             double plotMaxY_plusZero;
             int plotLineWidth;
-			bool invertOrientation;
+            bool invertOrientation;
             bool needShowGrid;
             bool needShowText;
             int gridLinesNumber;
@@ -314,6 +316,7 @@ namespace cv
                 double MaxY_plusZero;
 
                 needPlotLine = true;
+                invertOrientation = false;
 
                 //Obtain the minimum and maximum values of Xdata
                 minMaxLoc(plotDataX,&MinX,&MaxX);
@@ -384,7 +387,6 @@ namespace cv
                     }
                 }
 
-
                 //Vertical Y axis
                 drawLine(ImageXzero, ImageXzero, 0, plotSizeHeight, axisColor);
                 LineSpace = cvRound(LineSpace * (float)plotSizeWidth / plotSizeHeight );
@@ -413,7 +415,6 @@ namespace cv
 
                     if(Ydata.at<double>(i,0)<0)
                         Ydata.at<double>(i,0)=0;
-
                 }
 
                 return Ydata;
@@ -457,18 +458,16 @@ namespace cv
 
                 line(plotResult, Axis_start, Axis_end, lineColor, plotLineWidth, 8, 0);
             }
-
         };
 
-        Ptr<Plot2d> Plot2d::create(InputArray _plotData, bool _invertOrientation)
+        Ptr<Plot2d> Plot2d::create(InputArray _plotData)
         {
-            return Ptr<Plot2dImpl> (new Plot2dImpl (_plotData, _invertOrientation));
-
+            return Ptr<Plot2dImpl> (new Plot2dImpl (_plotData));
         }
 
-        Ptr<Plot2d> Plot2d::create(InputArray _plotDataX, InputArray _plotDataY, bool _invertOrientation)
+        Ptr<Plot2d> Plot2d::create(InputArray _plotDataX, InputArray _plotDataY)
         {
-            return Ptr<Plot2dImpl> (new Plot2dImpl (_plotDataX, _plotDataY, _invertOrientation));
+            return Ptr<Plot2dImpl> (new Plot2dImpl (_plotDataX, _plotDataY));
         }
     }
 }