Flugbahn-Chart

src/ch/spherIC/recurvebowsight/components/FlightCurveChart.java

 import android.graphics.Color;
 
 import ch.spherIC.recurvebowsight.R;
+import ch.spherIC.recurvebowsight.logic.TrajectoryCalculator;
 
 import org.achartengine.ChartFactory;
 import org.achartengine.GraphicalView;
 
         this.mRenderer.setYTitle(context.getResources().getString(R.string.fcChart_TitleYAxis));
         this.mRenderer.setYLabelsPadding(20);
+        this.mRenderer.setYLabelsVerticalPadding(-5);
         this.mRenderer.setYLabelsColor(0, Color.DKGRAY);
 
         // Zoom ausschalten
 
     public void updateRendererAfterCalculation(final Double shootingDistance, final Double[][] flightCurve) {
 
+        Double deltaH;
+        Double dy;
+        Double rangeY;
         int xLbls = 1;
+        int yLbls = 1;
+        Double minH = 0.0;
+        Double maxH = 0.0;
 
+
+        // X-Achse
         if (shootingDistance <= 18d) {
             xLbls = (int) Math.round(shootingDistance);
         } else if (shootingDistance <= 30d) {
         } else {
             xLbls = (int) Math.round(shootingDistance) / 10;
         }
-
         this.mRenderer.setXLabels(xLbls);
-        this.mRenderer.setYLabels(10);
-        this.mRenderer.setYAxisMin(-0.9);
-        this.mRenderer.setYAxisMax(0.9);
 
+        // Y-Achse
+        for (int i = 0; i < flightCurve.length; i++) {
+            if (flightCurve[i][TrajectoryCalculator.IDX_Y] > maxH) {
+                maxH = flightCurve[i][TrajectoryCalculator.IDX_Y];
+            }
+        }
+        minH = maxH;
+        for (int i = 0; i < flightCurve.length; i++) {
+            if (flightCurve[i][TrajectoryCalculator.IDX_Y] < minH) {
+                minH = flightCurve[i][TrajectoryCalculator.IDX_Y];
+            }
+        }
+        deltaH = maxH - minH;
+
+        if (deltaH <= shootingDistance / 10) {
+            dy = (shootingDistance / 10 - deltaH) / 2;
+            rangeY = shootingDistance / 10;
+        } else if (deltaH <= shootingDistance / 5) {
+            dy = (shootingDistance / 5 - deltaH) / 2;
+            rangeY = shootingDistance / 5;
+        } else {
+            dy = (deltaH + shootingDistance * 0.1) / 2;
+            rangeY = deltaH + shootingDistance * 0.1;
+        }
+
+        if (rangeY <= 3d) {
+            yLbls = 10;
+        } else if (rangeY <= 6d) {
+            yLbls = 12;
+        } else if (rangeY <= 9d) {
+            yLbls = 18;
+        } else {
+            yLbls = 20;
+        }
+
+        this.mRenderer.setYAxisMin(minH - dy);
+        this.mRenderer.setYAxisMax(maxH + dy);
+        this.mRenderer.setYLabels(yLbls);
     }
 }