X-Git-Url: http://winboard.nl/cgi-bin?a=blobdiff_plain;f=evalgraph.c;h=1a8bd075e3b3fd5235b20abb7a0f59339961850a;hb=6c09cbad6fd5630f883937303fc5e10a5ef8e3dc;hp=c18d3d291186e8a4412278b8b4c8871a0a719e61;hpb=72f96a2581a9b7b0682e34cbf391d19d834c3d15;p=xboard.git

diff --git a/evalgraph.c b/evalgraph.c
index c18d3d2..1a8bd07 100644
--- a/evalgraph.c
+++ b/evalgraph.c
@@ -5,7 +5,8 @@
  *
  * Copyright 2005 Alessandro Scotti
  *
- * Enhancments Copyright 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
+ * Enhancments Copyright 2009, 2010, 2011, 2012, 2013, 2014, 2015,
+ * 2016 Free Software Foundation, Inc.
  *
  * ------------------------------------------------------------------------
  *
@@ -53,6 +54,7 @@ int currFirst = 0;
 int currLast = 0;
 int currCurrent = -1;
 int range = 1;
+int differentialView;
 
 int nWidthPB = 0;
 int nHeightPB = 0;
@@ -63,7 +65,7 @@ int MarginH = 4;
 
 // back-end
 static void
-DrawLine (int x1, int y1, int x2, int y2, enum PEN penType)
+DrawLine (int x1, int y1, int x2, int y2, int penType)
 {
     DrawSegment( x1, y1, NULL, NULL, PEN_NONE );
     DrawSegment( x2, y2, NULL, NULL, penType );
@@ -71,7 +73,7 @@ DrawLine (int x1, int y1, int x2, int y2, enum PEN penType)
 
 // back-end
 static void
-DrawLineEx (int x1, int y1, int x2, int y2, enum PEN penType)
+DrawLineEx (int x1, int y1, int x2, int y2, int penType)
 {
     int savX, savY;
     DrawSegment( x1, y1, &savX, &savY, PEN_NONE );
@@ -85,6 +87,7 @@ GetPvScore (int index)
 {
     int score = currPvInfo[ index ].score;
 
+    if(differentialView) score = index < currLast-1 ? -currPvInfo[ index+1 ].score - score : 0;
     if( index & 1 ) score = -score; /* Flip score for black */
 
     return score;
@@ -102,7 +105,7 @@ MakeEvalTitle (char *title)
 
     if( depth <=0 ) return title;
     if( currCurrent & 1 ) score = -score; /* Flip score for black */
-    snprintf(buf, MSG_SIZ, "%s {%d: %s%.2f/%-2d %d}", title, currCurrent/2+1, 
+    snprintf(buf, MSG_SIZ, "%s {%d: %s%.2f/%-2d %d}", title, currCurrent/2+1,
 				score>0 ? "+" : " ", score/100., depth, (currPvInfo[currCurrent].time+50)/100);
 
     return buf;
@@ -152,7 +155,7 @@ static void
 DrawAxis ()
 {
     int cy = nHeightPB / 2, space = nHeightPB/(6 + appData.zoom);
-    
+
     DrawAxisSegmentHoriz( +5, TRUE );
     DrawAxisSegmentHoriz( +3, space >= 20 );
     DrawAxisSegmentHoriz( +1, space >= 20 && space*appData.zoom >= 40 );
@@ -312,15 +315,26 @@ static void
 DrawHistograms ()
 {
     VisualizationData vd;
+    int i; double step = 1;
 
     if( InitVisualization( &vd ) ) {
         if( vd.hist_width < MIN_HIST_WIDTH ) {
             DrawHistogramAsDiagram( vd.cy, vd.paint_width, vd.hist_count );
+            step = 0.5*vd.paint_width / (((vd.hist_count | 7) + 1)/2 + 1.);
         }
         else {
-            DrawHistogramFull( vd.cy, vd.hist_width, vd.hist_count );
+            DrawHistogramFull( vd.cy, step = vd.hist_width, vd.hist_count );
         }
     }
+    if(!differentialView) return;
+    differentialView = 0;
+    DrawSegment( MarginX + MarginW, vd.cy, NULL, NULL, PEN_NONE );
+    for( i=0; i<vd.hist_count; i++ ) {
+        int index = currFirst + i;
+        int x = MarginX + MarginW + index * step + step/2;
+        DrawSegment((int) x, GetValueY( GetPvScore(index) ), NULL, NULL, PEN_ANY );
+    }
+    differentialView = 1;
 }
 
 // back-end