add tread lines to stairs in Simulation and PostVis

VadereGui/src/org/vadere/gui/components/view/DefaultRenderer.java

 package org.vadere.gui.components.view;
 
-import java.awt.BasicStroke;
-import java.awt.Color;
-import java.awt.Font;
-import java.awt.Graphics2D;
-import java.awt.Point;
-import java.awt.RenderingHints;
-import java.awt.Stroke;
-import java.awt.geom.AffineTransform;
-import java.awt.geom.Line2D;
-import java.awt.geom.Point2D;
-import java.awt.geom.Rectangle2D;
-import java.awt.image.BufferedImage;
-import java.util.Collection;
-
 import org.vadere.gui.components.model.IDefaultModel;
 import org.vadere.state.scenario.Agent;
 import org.vadere.state.scenario.ScenarioElement;
+import org.vadere.state.scenario.Stairs;
+import org.vadere.util.geometry.Vector2D;
+import org.vadere.util.geometry.shapes.VLine;
 import org.vadere.util.geometry.shapes.VRectangle;
 import org.vadere.util.math.MathUtil;
 import org.vadere.util.potential.CellGrid;
@@ -25,10 +14,21 @@ import org.vadere.util.voronoi.HalfEdge;
 import org.vadere.util.voronoi.RectangleLimits;
 import org.vadere.util.voronoi.VoronoiDiagram;
 
+import java.awt.*;
+import java.awt.geom.AffineTransform;
+import java.awt.geom.Area;
+import java.awt.geom.Line2D;
+import java.awt.geom.Path2D;
+import java.awt.geom.Point2D;
+import java.awt.geom.Rectangle2D;
+import java.awt.image.BufferedImage;
+import java.util.Collection;
+
 public abstract class DefaultRenderer {
 
 	private IDefaultModel defaultModel;
 	private BufferedImage logo;
+	private static final double rotNeg90 = - Math.PI /2;
 
 	public DefaultRenderer(final IDefaultModel defaultModel) {
 		this(defaultModel, true, false);
@@ -127,6 +127,43 @@ public abstract class DefaultRenderer {
 		g.setColor(tmpColor);
 	}
 
+	protected  void renderStairs(final Iterable<Stairs> stairs, final Graphics2D g,
+								 final Color color){
+		final Color tmpColor = g.getColor();
+
+		for (Stairs s : stairs) {
+			g.setColor(Color.black);
+			g.fill(s.getShape());
+			Area hatchArea = new Area(s.getShape());
+			double stroke = s.getTreadDepth() * 0.05;
+			double halfTreadDepth = s.getTreadDepth()/2;
+
+			for (Stairs.Tread tread : s.getTreads()) {
+
+				VLine tLine = tread.treadline;
+				Vector2D vec = tLine.asVector();
+				vec = vec.normalize(stroke);
+				vec = vec.rotate(rotNeg90);
+				Vector2D trans = vec.normalize(halfTreadDepth);
+				Path2D p = new Path2D.Double();
+				p.moveTo(tLine.x1, tLine.y1);
+				p.lineTo(tLine.x2, tLine.y2);
+				p.lineTo(tLine.x2 + vec.x, tLine.y2  + vec.y);
+				p.lineTo(tLine.x1 + vec.x, tLine.y1 + vec.y);
+				p.closePath();
+
+				p.transform(AffineTransform.getTranslateInstance(trans.x, trans.y));
+
+				hatchArea.subtract(new Area(p));
+			}
+
+			g.setColor(color);
+			g.fill(hatchArea);
+		}
+		g.setColor(tmpColor);
+	}
+
+
 	protected void renderSelectionShape(final Graphics2D graphics) {
 		graphics.setColor(defaultModel.getMouseSelectionMode().getSelectionColor());
 		graphics.setStroke(new BasicStroke(getSelectionBorderLineWidht()));

VadereGui/src/org/vadere/gui/components/view/SimulationRenderer.java

@@ -81,7 +81,7 @@ public abstract class SimulationRenderer extends DefaultRenderer {
         }
 
         if (model.config.isShowStairs()) {
-            renderScenarioElement(model.getTopography().getStairs(), graphics, model.config.getStairColor());
+            renderStairs(model.getTopography().getStairs(), graphics, model.config.getStairColor());
         }
 
         if (model.config.isShowTargets()) {

VadereModelTests/TestStairs/scenarios/stairs_diagonal_1_+1.scenario

@@ -77,7 +77,7 @@
       "digitsPerCoordinate" : 2,
       "useFixedSeed" : true,
       "fixedSeed" : 1,
-      "simulationSeed" : 0
+      "simulationSeed" : 1
     },
     "topography" : {
       "attributes" : {

VadereModelTests/TestStairs/scenarios/stairs_diagonal_1_-1.scenario

@@ -77,7 +77,7 @@
       "digitsPerCoordinate" : 2,
       "useFixedSeed" : true,
       "fixedSeed" : 1,
-      "simulationSeed" : 0
+      "simulationSeed" : 1
     },
     "topography" : {
       "attributes" : {

VadereModelTests/TestStairs/scenarios/stairs_diagonal_2_+1.scenario

@@ -77,7 +77,7 @@
       "digitsPerCoordinate" : 2,
       "useFixedSeed" : true,
       "fixedSeed" : 1,
-      "simulationSeed" : 0
+      "simulationSeed" : 1
     },
     "topography" : {
       "attributes" : {

VadereModelTests/TestStairs/scenarios/stairs_diagonal_3_+1.scenario

@@ -77,7 +77,7 @@
       "digitsPerCoordinate" : 2,
       "useFixedSeed" : true,
       "fixedSeed" : 1,
-      "simulationSeed" : 0
+      "simulationSeed" : 1
     },
     "topography" : {
       "attributes" : {

VadereModelTests/TestStairs/scenarios/stairs_diagonal_both_3_4_+1.scenario

@@ -77,7 +77,7 @@
       "digitsPerCoordinate" : 2,
       "useFixedSeed" : true,
       "fixedSeed" : 1,
-      "simulationSeed" : 0
+      "simulationSeed" : 1
     },
     "topography" : {
       "attributes" : {

VadereModelTests/TestStairs/scenarios/stairs_diagonal_both_3_4_-1.scenario

@@ -77,7 +77,7 @@
       "digitsPerCoordinate" : 2,
       "useFixedSeed" : true,
       "fixedSeed" : 1,
-      "simulationSeed" : 0
+      "simulationSeed" : 1
     },
     "topography" : {
       "attributes" : {

VadereModelTests/TestStairs/scenarios/stairs_upward_direction_up_+1.scenario

@@ -77,7 +77,7 @@
       "digitsPerCoordinate" : 2,
       "useFixedSeed" : true,
       "fixedSeed" : 1,
-      "simulationSeed" : 0
+      "simulationSeed" : 1
     },
     "topography" : {
       "attributes" : {

VadereModelTests/TestStairs/scenarios/stairs_upward_direction_up_-1.scenario

@@ -77,7 +77,7 @@
       "digitsPerCoordinate" : 2,
       "useFixedSeed" : true,
       "fixedSeed" : 1,
-      "simulationSeed" : 0
+      "simulationSeed" : 1
     },
     "topography" : {
       "attributes" : {

VadereUtils/src/org/vadere/util/geometry/Vector2D.java

@@ -96,4 +96,9 @@ public class Vector2D extends VPoint {
 		return new Vector2D(this.x - p.x, this.y - p.y);
 	}
 
+	public Vector2D rotate(final double radAngle) {
+		return new Vector2D(x * Math.cos(radAngle) - y * Math.sin(radAngle),
+				x * Math.sin(radAngle) + y * Math.cos(radAngle));
+	}
+
 }

VadereUtils/src/org/vadere/util/geometry/shapes/VLine.java

@@ -3,6 +3,7 @@ package org.vadere.util.geometry.shapes;
 import java.awt.geom.Line2D;
 
 import org.vadere.util.geometry.GeometryUtils;
+import org.vadere.util.geometry.Vector2D;
 
 @SuppressWarnings("serial")
 public class VLine extends Line2D.Double {
@@ -22,4 +23,8 @@ public class VLine extends Line2D.Double {
 	public double distance(VPoint point) {
 		return GeometryUtils.closestToSegment(this, point).distance(point);
 	}
+
+	public Vector2D asVector(){
+		return new Vector2D(x2 - x1, y2 - y1);
+	}
 }