[chronojump] Implemented Samozino jump weight profile

[Xavier de Blas <xaviblas src gnome org>]

commit ca2752eb3ad9cf7ce5d3ed4f72b33bdf62342ee0
Author: Xavier de Blas <xaviblas gmail com>
Date:   Tue Jan 7 17:36:09 2020 +0100

    Implemented Samozino jump weight profile

 src/gui/cairo/jumpsDjOptimalFall.cs   |  6 ++++--
 src/gui/cairo/jumpsWeightFVProfile.cs | 14 +++++++++-----
 src/gui/cairo/xy.cs                   | 15 +++++++++------
 src/jumpsWeightFVProfile.cs           | 10 +++++++---
 4 files changed, 29 insertions(+), 16 deletions(-)
---
diff --git a/src/gui/cairo/jumpsDjOptimalFall.cs b/src/gui/cairo/jumpsDjOptimalFall.cs
index 1aaef30c..0d1feb85 100644
--- a/src/gui/cairo/jumpsDjOptimalFall.cs
+++ b/src/gui/cairo/jumpsDjOptimalFall.cs
@@ -36,7 +36,8 @@ public class JumpsDjOptimalFallGraph : CairoXY
                initGraph();
 
                g.SetFontSize(16);
-               printText(area.Allocation.Width /2, area.Allocation.Height /2, 24, textHeight, "Need to 
execute jumps: " + jumpType, g, true);
+               printText(area.Allocation.Width /2, area.Allocation.Height /2, 24, textHeight,
+                               string.Format("Need to execute jumps: {0}.", jumpType), g, true);
 
                endGraph();
        }
@@ -60,7 +61,8 @@ public class JumpsDjOptimalFallGraph : CairoXY
                this.jumpType = jumpType;
                this.date = date;
 
-               axisRightLabel = "Fall (cm)";
+               axisYLabel = "Height (cm)";
+               axisXLabel = "Fall (cm)";
        }
 
        public override void Do()
diff --git a/src/gui/cairo/jumpsWeightFVProfile.cs b/src/gui/cairo/jumpsWeightFVProfile.cs
index e80f9682..895b1e7d 100644
--- a/src/gui/cairo/jumpsWeightFVProfile.cs
+++ b/src/gui/cairo/jumpsWeightFVProfile.cs
@@ -28,7 +28,7 @@ using Cairo;
 
 public class JumpsWeightFVProfileGraph : CairoXY
 {
-       public enum ErrorAtStart { NEEDPERSONLEGPARAMS, NEEDJUMPS }
+       public enum ErrorAtStart { NEEDLEGPARAMS, BADLEGPARAMS, NEEDJUMPS }
 
        //constructor when there are no points
        public JumpsWeightFVProfileGraph (DrawingArea area, ErrorAtStart error)//, string title, string 
jumpType, string date)
@@ -38,10 +38,12 @@ public class JumpsWeightFVProfileGraph : CairoXY
                initGraph();
 
                string message = "";
-               if(error == ErrorAtStart.NEEDPERSONLEGPARAMS)
-                       message = "Need to fill person's leg parameters";
+               if(error == ErrorAtStart.NEEDLEGPARAMS)
+                       message = "Need to fill person's leg parameters.";
+               else if(error == ErrorAtStart.BADLEGPARAMS)
+                       message = "Person's leg parameters are incorrect.";
                else //if(error == ErrorAtStart.NEEDJUMPS)
-                       message = "Need to execute jumps SJl and/or SJ";
+                       message = "Need to execute jumps SJl and/or SJ.";
 
                g.SetFontSize(16);
                printText(area.Allocation.Width /2, area.Allocation.Height /2, 24, textHeight, message, g, 
true);
@@ -71,7 +73,9 @@ public class JumpsWeightFVProfileGraph : CairoXY
                //this.jumpType = jumpType;
                this.date = date;
 
-               axisRightLabel = "Speed (m/s)";
+               outerMargins = 50; //blank space outside the axis
+               axisYLabel = "Force (N)";
+               axisXLabel = "Speed (m/s)";
        }
 
        public override void Do()
diff --git a/src/gui/cairo/xy.cs b/src/gui/cairo/xy.cs
index 75df46fd..9bf564aa 100644
--- a/src/gui/cairo/xy.cs
+++ b/src/gui/cairo/xy.cs
@@ -39,7 +39,8 @@ public abstract class CairoXY
 
        protected Cairo.Context g;
        protected const int textHeight = 12;
-       protected string axisRightLabel = "";
+       protected string axisYLabel = "";
+       protected string axisXLabel = "";
 
        double minX = 1000000;
        double maxX = 0;
@@ -54,14 +55,16 @@ public abstract class CairoXY
        Cairo.Color blue;
 
        //for all 4 sides
-       const int outerMargins = 30; //blank space outside the axis
-       const int innerMargins = 30; //space between the axis and the real coordinates
-       const int totalMargins = outerMargins + innerMargins;
+       protected int outerMargins = 30; //blank space outside the axis
+       int innerMargins = 30; //space between the axis and the real coordinates
+       int totalMargins;
 
        public abstract void Do();
 
        protected void initGraph()
        {
+               totalMargins = outerMargins + innerMargins;
+
                //1 create context
                g = Gdk.CairoHelper.Create (area.GdkWindow);
                
@@ -138,8 +141,8 @@ public abstract class CairoXY
                g.LineTo(outerMargins, graphHeight - outerMargins);
                g.LineTo(graphWidth - outerMargins, graphHeight - outerMargins);
                g.Stroke ();
-               printText(2, Convert.ToInt32(outerMargins/2), 0, textHeight, "Height (cm)", g, false);
-               printText(graphWidth - Convert.ToInt32(outerMargins/2), graphHeight - outerMargins, 0, 
textHeight, axisRightLabel, g, false);
+               printText(2, Convert.ToInt32(outerMargins/2), 0, textHeight, axisYLabel, g, false);
+               printText(graphWidth - Convert.ToInt32(outerMargins/2), graphHeight - outerMargins, 0, 
textHeight, axisXLabel, g, false);
 
                paintGrid (minX, absoluteMaxX, minY, absoluteMaxY, 5);
        }
diff --git a/src/jumpsWeightFVProfile.cs b/src/jumpsWeightFVProfile.cs
index f815a069..f2cd5353 100644
--- a/src/jumpsWeightFVProfile.cs
+++ b/src/jumpsWeightFVProfile.cs
@@ -31,13 +31,12 @@ public class JumpsWeightFVProfile
        {
        }
        
-       public void Calculate (int personID, int sessionID) //, string jumpType)
+       public void Calculate (int personID, int sessionID, double personWeight, double trochanterToe, double 
trochanterFloorOnFlexion)
        {
                //1 get data
                 List<Jump> jump_l = SqliteJump.SelectJumpsWeightFVProfile (personID, sessionID, false); 
//TODO:true);
 
                //2 convert to list of Point
-               //List<Point> point_l = new List<Point>();
                point_l = new List<Point>();
                 foreach(Jump j in jump_l)
                {
@@ -49,9 +48,14 @@ public class JumpsWeightFVProfile
                        LogB.Information("Added point: {0}", j.ToString());
                        LogB.Information("with weight: {0}", j.Weight.ToString());
                        */
+                       //Samozino formula is F = m*g*( (h/hp0) +1)
+                       //h is jump's height
+                       //hp0 = trochanterToe - trochanterFloorOnFlexion
+                       double force = (personWeight + j.Weight) * 9.81 * ( ( 
Util.GetHeightInCentimeters(j.Tv) / (trochanterToe - trochanterFloorOnFlexion) ) + 1 );
+
                        point_l.Add(new Point(
                                                Util.GetInitialSpeed(j.Tv, true), //TODO: pass 
preferences.metersSecondsPreferred and show it on graph label
-                                               Util.GetHeightInCentimeters(j.Tv)
+                                               force
                                                ));
                }