draw all Total...Renderer as polygons between *end* of pauses -> results in jagged lines (not rectangular any more) (#111)

Author: chewiebug

src/main/java/com/tagtraum/perf/gcviewer/renderer/TotalHeapRenderer.java

@@ -38,7 +38,13 @@ public Polygon computePolygon(ModelChart modelChart, GCModel model) {
                 if (event.getTotal() > 0) {
                     // there are events that don't have a heap size associated (like "GC remark" of G1)
                     // -> skip them
-                    polygon.addPoint(event.getTimestamp() - model.getFirstPauseTimeStamp(), event.getTotal());
+                    if (polygon.npoints == 1) {
+                        // first point needs to be treated different from the rest,
+                        // because otherwise the polygon would not start with a vertical line at 0,
+                        // but with a slanting line between 0 and after the first pause
+                        polygon.addPoint(0, (double)event.getTotal());
+                    }
+                    polygon.addPoint(event.getTimestamp() - model.getFirstPauseTimeStamp() + event.getPause(), event.getTotal());
                     lastTotal = event.getTotal();
                 }
             }

src/main/java/com/tagtraum/perf/gcviewer/renderer/TotalTenuredRenderer.java

@@ -35,27 +35,22 @@ public TotalTenuredRenderer(ModelChartImpl modelChart) {
     public Polygon computePolygon(ModelChart modelChart, GCModel model) {
         ScaledPolygon polygon = createMemoryScaledPolygon();
         polygon.addPoint(0.0d, 0.0d);
-        double lastTotal = 0.0d;
+        double lastTotal = 0;
         for (Iterator<AbstractGCEvent<?>> i = model.getStopTheWorldEvents(); i.hasNext();) {
             AbstractGCEvent<?> abstractGCEvent = i.next();
             if (abstractGCEvent instanceof GCEvent) {
                 GCEvent event = (GCEvent) abstractGCEvent;
                 GCEvent tenured = event.getTenured();
                 if (hasMemoryInformation(event) && tenured != null) {
-                    double total = tenured.getTotal();
                     if (polygon.npoints == 1) {
                         // first point needs to be treated different from the rest,
                         // because otherwise the polygon would not start with a vertical line at 0,
                         // but with a slanting line between 0 and after the first pause
-                        polygon.addPoint(0.0d, total);
-                        lastTotal = total;
+                        polygon.addPoint(0, (double)tenured.getTotal());
                     }
-
-                    if (lastTotal != total) {
-                        polygon.addPoint(tenured.getTimestamp() - model.getFirstPauseTimeStamp(), lastTotal);
-                    }
-                    polygon.addPoint(tenured.getTimestamp() - model.getFirstPauseTimeStamp() + tenured.getPause(), total);
-                    lastTotal = total;
+                    polygon.addPoint(tenured.getTimestamp() - model.getFirstPauseTimeStamp() + event.getPause(),
+                            tenured.getTotal());
+                    lastTotal = tenured.getTotal();
                 }
             }
         }

src/main/java/com/tagtraum/perf/gcviewer/renderer/TotalYoungRenderer.java

@@ -56,11 +56,6 @@ public Polygon computePolygon(ModelChart modelChart, GCModel model) {
                         // because otherwise the polygon would not start with a vertical line at 0,
                         // but with a slanting line between 0 and after the first pause
                         polygon.addPoint(0, tenuredSize + youngSize);
-                        lastYoung = youngSize;
-                        lastTenured = tenuredSize;
-                    }
-                    if (((lastTenured + lastYoung) - (tenuredSize + youngSize)) > 0.0000001) {
-                        polygon.addPoint(event.getTimestamp() - model.getFirstPauseTimeStamp(), lastTenured + lastYoung);
                     }
                     polygon.addPoint(event.getTimestamp() - model.getFirstPauseTimeStamp() + event.getPause(), tenuredSize + youngSize);
                     lastYoung = youngSize;