initial code for new processor

VadereSimulator/src/org/vadere/simulator/projects/dataprocessing/processor/AreaDensityCountingProcessor.java

+package org.vadere.simulator.projects.dataprocessing.processor;
+
+import org.vadere.simulator.control.SimulationState;
+import org.vadere.simulator.projects.dataprocessing.datakey.TimestepKey;
+import org.vadere.state.attributes.processor.AttributesAreaDensityCountingProcessor;
+import org.vadere.state.attributes.processor.AttributesProcessor;
+import org.vadere.state.scenario.Pedestrian;
+
+import java.util.Collection;
+
+import org.vadere.annotation.factories.dataprocessors.DataProcessorClass;
+
+/**
+ * @author Daniel Lehmberg
+ * Processor counts number of pedestrians in a measurement area of any shape.
+ */
+@DataProcessorClass(label = "AreaDensityCountingProcessor")
+public class AreaDensityCountingProcessor extends AreaDataProcessor<Integer> {
+
+    public AreaDensityCountingProcessor() {
+        super("areaDensityCounting");
+        setAttributes(new AttributesAreaDensityCountingProcessor());
+    }
+
+    @Override
+    protected void doUpdate(final SimulationState state) {
+        int step = state.getStep();
+
+        int pedCount = 0;
+        Collection<Pedestrian> pedestrians = state.getTopography().getPedestrianDynamicElements().getElements();
+
+        for (Pedestrian p : pedestrians) {
+            if(this.getMeasurementArea().getShape().contains(p.getPosition())){
+                pedCount++;
+            }
+        }
+
+        this.putValue(new TimestepKey(step), pedCount);
+    }
+
+    @Override
+    public AttributesProcessor getAttributes() {
+        if(super.getAttributes() == null) {
+            setAttributes(new AttributesAreaDensityCountingProcessor());
+        }
+        return super.getAttributes();
+    }
+}

VadereState/src/org/vadere/state/attributes/processor/AttributesAreaDensityCountingProcessor.java

+package org.vadere.state.attributes.processor;
+
+/**
+ * @author Daniel Lehmberg
+ */
+
+public class AttributesAreaDensityCountingProcessor extends AttributesAreaProcessor {
+
+}

VadereState/src/org/vadere/state/attributes/processor/AttributesAreaProcessor.java

@@ -2,6 +2,7 @@ package org.vadere.state.attributes.processor;
 
 /**
  * @author Mario Teixeira Parente
+ * @author Stefan Schuhbäck (major update)
  */
 
 public class AttributesAreaProcessor extends AttributesProcessor {