praktikum-holons/src/ui/view/inspector/UnitGraph.java

package ui.view.inspector;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Cursor;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.geom.Path2D;
import java.awt.geom.Point2D;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import java.util.ListIterator;
import java.util.Optional;
import java.util.Set;

import javax.swing.JPanel;

import classes.HolonElement;
import interfaces.GraphEditable.GraphType;
import interfaces.TimelineDependent;
import ui.controller.Control;
import ui.model.Model;
import utility.Maths;
import utility.Vector2Int;

/**
 * This Class represents a Graph where the User can model the behavior of
 * elements and switches over time.
 *
 * @author Tom Troppmann
 */
public class UnitGraph extends JPanel implements MouseListener, MouseMotionListener, ComponentListener {

	// Normal Settings
	private static final int border = 4;
	private static final int clickThreshholdSquared = 25;

	// Display Settings
	/**
	 * The size of a dot in the graph. It should be at least 1.
	 */
	private static final int dotSize = 8;

	/** The Color of a dot in the graph. */
	private static final Color dotColor = Color.blue;
	private static final Color editDotColor = new Color(255, 119, 0);
	private static final Color[] seriesColorArray = { Color.blue, Color.cyan, Color.black, Color.green, Color.gray,
			Color.magenta, Color.yellow, Color.PINK, Color.red };
	private static final Color globalCurveColor = new Color(255, 30, 30);
	private static final Color zeroLineColor = new Color(255, 153, 153);

	// Intern Variables
	private class Series {
		public LinkedList<UnitGraphPoint> points = new LinkedList<UnitGraphPoint>();
		public TimelineDependent element;
		public GraphType type;
		public Color color;
	}

	private ArrayList<Series> seriesList = new ArrayList<Series>();
	private Vector2Int editPosition;
	private Optional<Series> actualSeries;

	private class GlobalCurve {
		public LinkedList<UnitGraphPoint> points = new LinkedList<UnitGraphPoint>();
		public float minEnergy;
		public float maxEnergy;
		public LinkedList<UnitGraphPoint> zeroLinePoints = new LinkedList<UnitGraphPoint>();
	}

	private Optional<GlobalCurve> globalCurve = Optional.empty();
	private boolean editMode = false;
	private Set<HolonElement> elements;
	
	private enum EditPointType {
		Normal, StartPoint, EndPoint
	};

	private Model model;
	private int widthWithBorder, heightWithBorder;

	private EditPointType editPointType;
	
	

	/**
	 * Constructor.
	 *
	 * @param model   the Model
	 * @param control the Controller
	 */
	public UnitGraph(Control control) {
		setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
		this.model = control.getModel();
		this.setBackground(Color.WHITE);

		this.addMouseListener(this);
		this.addMouseMotionListener(this);
		this.addComponentListener(this);
	}

	/**
	 * When the UnitGraph should represent a new GraphEditable Element. Its Updates
	 * the Graph and give access to the Element.
	 * 
	 * @param element
	 */
	public void addNewSeries(TimelineDependent element) {
		Series series = new Series();
		overrideUnitGraph(series, element.getStateGraph());
		series.element = element;
		series.type = element.getGraphType();
		series.color = seriesColorArray[element.hashCode() % seriesColorArray.length];
		seriesList.add(series);
		repaint();
	}

	public void clearSeries() {
		seriesList.clear();
		repaint();
	}

	public void setGlobalCurve(Set<HolonElement> elements) {
		if(elements.isEmpty()) {
			this.globalCurve = Optional.empty();
			return;
		}
		GlobalCurve curve = new GlobalCurve();
		curve.maxEnergy = elements.stream().map(ele -> ele.getEnergy()).filter(energy -> energy > 0).reduce(0.0f,
				Float::sum);
		curve.minEnergy = elements.stream().map(ele -> ele.getEnergy()).filter(energy -> energy < 0).reduce(0.0f,
				Float::sum);
		
		float[] sample = new float[model.getMaxIterations()];
		// sample energy
		for (HolonElement element : elements) {
			for (int i = 0; i < model.getMaxIterations(); i++) {
				sample[i] += element.getEnergyAtTimeStep(i);
			}
		}
		
		// sample curve
		for (int i = 0; i < model.getMaxIterations(); i++) {
			curve.points.add(new UnitGraphPoint((double) i / (double)model.getMaxIterations(),
					Maths.inverseLinearInterpolation(curve.minEnergy, curve.maxEnergy, sample[i]), false));
		}
		// update displayPosition
		for (UnitGraphPoint p : curve.points) {
			p.calcDisplayedPosition(border, widthWithBorder, heightWithBorder);
		}
		double zeroLineYPos = Maths.inverseLinearInterpolation(curve.minEnergy, curve.maxEnergy, 0.0);
		curve.zeroLinePoints.add(new UnitGraphPoint(0.0,zeroLineYPos, false));
		curve.zeroLinePoints.add(new UnitGraphPoint(1.0,zeroLineYPos, false));
		for (UnitGraphPoint p : curve.zeroLinePoints) {
			p.calcDisplayedPosition(border, widthWithBorder, heightWithBorder);
		}
		// set global curve
		this.globalCurve = Optional.of(curve);
		this.elements = elements;
		
	}

	private void updateGlobalCurve() {
		setGlobalCurve(this.elements);
	}
	
	
	
	/**
	 * Paints the Graph, the Grid, the actual Line from the currentIteration
	 * 
	 * @param g Graphics
	 */
	public void paintComponent(Graphics g) {
		super.paintComponent(g);
		Graphics2D g2D = (Graphics2D) g;
		drawGrid(g2D);
		g2D.setColor(Color.BLACK);
		g2D.setRenderingHints(new RenderingHints(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON));
		g2D.setStroke(new BasicStroke(2f));
		drawUnitGraph(g2D);
		g2D.setColor(dotColor);
		if (editMode) {
			drawUnitGraphPointsReleased(g2D);
		} else {
			drawUnitGraphPoints(g2D);
		}
		g2D.setColor(dotColor);
		g2D.setStroke(new BasicStroke(1));
		drawCurrentIterartionLine(g2D);
		g2D.setStroke(new BasicStroke(1, BasicStroke.CAP_SQUARE, BasicStroke.JOIN_ROUND, 1.0f, new float[]{6}, 3));
		this.globalCurve.ifPresent(curve -> {
			g2D.setColor(globalCurveColor);
			drawDoubleGraph(g2D, curve.points);
			g2D.setColor(zeroLineColor);
			g2D.setStroke(new BasicStroke(1));
			drawDoubleGraph(g2D, curve.zeroLinePoints);
		});
	}

	// Draw Methods only to let the User see the changes. Nothing its saved here or
	// changed.
	/**
	 * Helper Method to draw the UnitGraphPanel.
	 * {@link UnitGraph#paintComponent(Graphics)}
	 * <p>
	 * This Methods draws the UnitGraph whether its a boolGraph or a doubleGraph.
	 * 
	 * @param g to draw.
	 */
	private void drawUnitGraph(Graphics2D g) {
		boolean drawSnappingHintFlag = false;
		for (Series series : this.seriesList) {
			g.setColor(series.color);
			switch (series.type) {
			case boolGraph:
				if (editMode) {
					drawBoolGraphInEditMode(g, series);
					drawSnappingHintFlag = true;
				} else
					drawBoolGraph(g, series);
				break;
			case doubleGraph:
				if (editMode)
					drawDoubleGraphInEditMode(g, series);
				else
					drawDoubleGraph(g, series.points);
				break;
			default:
				throw new UnsupportedOperationException();
			}
		}
		if (drawSnappingHintFlag) {
			drawSnappingHint(g);
		}

	}

	/**
	 * Helper Method to draw the UnitGraphPanel.
	 * {@link UnitGraph#paintComponent(Graphics)}
	 * <p>
	 * This Methods draws the UnitGraphPoints of the UnitGraph.
	 * 
	 * @param g to draw.
	 */
	private void drawUnitGraphPoints(Graphics2D g) {
		g.setColor(dotColor);
		for (Series series : seriesList) {
			for (UnitGraphPoint p : series.points) {
				drawDot(g, p.displayedPosition);
			}
		}

	}

	/**
	 * Helper Method to draw the UnitGraphPanel.
	 * {@link UnitGraph#paintComponent(Graphics)}
	 * <p>
	 * This Methods draws the UnitGraphPoints of the UnitGraph when its in EditMode.
	 * 
	 * @param g to draw.
	 */
	private void drawUnitGraphPointsReleased(Graphics2D g) {
		drawUnitGraphPoints(g);
		g.setColor(editDotColor);
		drawDot(g, editPosition);
	}

	/**
	 * Helper Method to draw the UnitGraphPanel.
	 * {@link UnitGraph#paintComponent(Graphics)}
	 * <p>
	 * This Methods draws the Grid on the Canvas.
	 * 
	 * @param g2D to draw.
	 */
	private void drawGrid(Graphics2D g2D) {
		g2D.setStroke(new BasicStroke(1));
		g2D.setColor(Color.lightGray);
		int amountOfLines = 10;
		int width = widthWithBorder + 2 * border;
		int height = heightWithBorder;
		for (int i = 0; i <= amountOfLines; i++) {
			int linehieght = (int) (((double) i / (double) amountOfLines) * (double) height) + border;
			g2D.drawLine(0, linehieght, width, linehieght);
		}
	}

	/**
	 * Helper Method to draw the UnitGraphPanel.
	 * {@link UnitGraph#paintComponent(Graphics)}
	 * <p>
	 * This Method draws the CurrentIterationLine.
	 * 
	 * @param g2D to draw.
	 */
	private void drawCurrentIterartionLine(Graphics2D g) {
		int cur = model.getCurrentIteration();
		int max = model.getMaxIterations();
		if (isLocalPeriedDifferentInSeries()) {
			for (Series series : seriesList) {
				double where;
				if (!series.element.isUsingLocalPeriod()) {
					where = ((double) cur) / ((double) max);
				} else {
					int lPeriod = series.element.getLocalPeriod();
					where = ((double) cur % lPeriod) / ((double) lPeriod);
				}
				Vector2Int oben = new Vector2Int(border + (int) (where * widthWithBorder), 0);
				Vector2Int unten = new Vector2Int(border + (int) (where * widthWithBorder),
						2 * border + heightWithBorder);
				g.setColor(series.color);
				drawLine(g, oben, unten);
			}
		} else {
			double where;
			if (!isUsingLocalPeriod()) {
				where = ((double) cur) / ((double) max);
			} else {
				int lPeriod = getFirstLocalPeriod();
				where = ((double) cur % lPeriod) / ((double) lPeriod);
			}
			Vector2Int oben = new Vector2Int(border + (int) (where * widthWithBorder), 0);
			Vector2Int unten = new Vector2Int(border + (int) (where * widthWithBorder), 2 * border + heightWithBorder);
			g.setColor(dotColor);
			drawLine(g, oben, unten);
		}

	}

	/**
	 * Helper Method to draw the UnitGraphPanel.
	 * {@link UnitGraph#paintComponent(Graphics)}
	 * <p>
	 * This Method draws a line between two Positions on the Canvas.
	 * 
	 * @param g2D   to draw.
	 * @param start the Position of one end of the line to draw.
	 * @param end   the other Ends Position of the Line to draw.
	 */
	private void drawLine(Graphics2D g, Vector2Int start, Vector2Int end) {
		Path2D.Double path = new Path2D.Double();
		path.moveTo(start.getX(), start.getY());
		path.lineTo(end.getX(), end.getY());
		g.draw(path);
	}

	/**
	 * Helper Method to draw the UnitGraphPanel.
	 * {@link UnitGraph#paintComponent(Graphics)}
	 * <p>
	 * Initialize a Cubic BezierCurve.
	 * 
	 * @param start The Position to start the Curve.
	 */
	private Path2D.Double initBezier(Vector2Int start) {
		// Good Source for basic understanding for Bezier Curves
		// http://www.theappguruz.com/blog/bezier-curve-in-games
		Path2D.Double path = new Path2D.Double();
		path.moveTo(start.getX(), start.getY());
		return path;
	}

	/**
	 * Helper Method to draw the UnitGraphPanel.
	 * {@link UnitGraph#paintComponent(Graphics)}
	 * <p>
	 * Calculate the Path of a the Cubic BezierCurve with the special controlPoints
	 * to make the wanted behavior.
	 * 
	 * @param path   the path of the Bezier.
	 * @param actaul the actual Position of the Path.
	 * @param target the end Position of the Curve.
	 */
	private void curveTo(Path2D.Double path, Vector2Int actual, Vector2Int target) {
		double mitte = (actual.getX() + target.getX()) * 0.5;
		path.curveTo(mitte, actual.getY(), mitte, target.getY(), target.getX(), target.getY());
	}

	/**
	 * Helper Method to draw the UnitGraphPanel.
	 * {@link UnitGraph#paintComponent(Graphics)}
	 * <p>
	 * Draws a Dot at a Position.
	 * 
	 * @param g to draw.
	 * @param p the position of the Dot.
	 */
	private void drawDot(Graphics2D g, Vector2Int p) {
		g.fillOval(p.getX() - dotSize / 2, p.getY() - dotSize / 2, dotSize, dotSize);
	}

	/**
	 * Helper Method to draw the UnitGraphPanel.
	 * {@link UnitGraph#paintComponent(Graphics)}
	 * <p>
	 * This Method draws the UnitGraph as BoolGraph.
	 * 
	 * @param g2D to draw.
	 */
	private void drawBoolGraph(Graphics2D g, Series series) {
		if (series.points.size() <= 1)
			return;
		LinkedList<Vector2Int> cornerPoints = new LinkedList<Vector2Int>();
		ListIterator<UnitGraphPoint> iter = series.points.listIterator();
		Vector2Int actual = series.points.getFirst().displayedPosition;
		Path2D.Double path = new Path2D.Double();
		path.moveTo(actual.getX(), actual.getY());
		while (iter.hasNext()) {
			Vector2Int target = iter.next().displayedPosition;
			// BooleanConnection
			path.lineTo(target.getX(), actual.getY()); // line to corner
			cornerPoints.add(new Vector2Int(target.getX(), actual.getY())); // save corner
			path.lineTo(target.getX(), target.getY()); // line to next Point

			actual = target;
		}
		g.draw(path);
		// Draw the Points on the Corner that dont exist in Data but should be visual
		g.setColor(dotColor);
		for (Vector2Int p : cornerPoints) {
			drawDot(g, p);
		}

	}

	/**
	 * Helper Method to draw the UnitGraphPanel.
	 * {@link UnitGraph#paintComponent(Graphics)}
	 * <p>
	 * This Method draws the UnitGraph as BoolGraph in EditMode.
	 * 
	 * @param g2D to draw.
	 */
	private void drawBoolGraphInEditMode(Graphics2D g, Series series) {
		LinkedList<Vector2Int> before = new LinkedList<Vector2Int>();
		LinkedList<Vector2Int> after = new LinkedList<Vector2Int>();
		for (UnitGraphPoint p : series.points) {
			if (p.displayedPosition.getX() < editPosition.getX())
				before.add(p.displayedPosition);
			else
				after.add(p.displayedPosition);
		}
		g.setColor(series.color);
		drawBoolGraphFromList(g, before);
		g.setColor(series.color);
		drawBoolGraphFromList(g, after);
		// EditGraph
		LinkedList<Vector2Int> middle = new LinkedList<Vector2Int>();
		if (!before.isEmpty())
			middle.add(before.getLast());
		middle.add(editPosition);
		if (!after.isEmpty())
			middle.add(after.getFirst());

		g.setColor(editDotColor);
		drawBoolGraphFromList(g, middle);

	}

	/**
	 * Helper Method to draw the UnitGraphPanel.
	 * {@link UnitGraph#paintComponent(Graphics)}
	 * <p>
	 * This Method draws a red Hint to signal the User the snapping of the hovered
	 * Point under the Cursor in EditMode.
	 * 
	 * @param g2D to draw.
	 */
	private void drawSnappingHint(Graphics2D g) {
		// ColorHint
		g.setColor(Color.RED);
		// Threshhold Line
		final float dash1[] = { 10.0f };
		final BasicStroke dashed = new BasicStroke(2.0f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 10.0f, dash1,
				0.0f);
		g.setStroke(dashed);

		int halfheight = border + heightWithBorder / 2;
		g.drawLine(0, halfheight, widthWithBorder + 2 * border, halfheight);
		// Threshhold Text
		g.drawString("Snapping Threshold", 10, halfheight - 2);
	}

	/**
	 * Helper Method to draw the UnitGraphPanel.
	 * {@link UnitGraph#paintComponent(Graphics)}
	 * <p>
	 * This Method draws a partial Graph from a Position List as BoolGraph.
	 * 
	 * @param g2D  to draw.
	 * @param list the PositionList to draw a BoolGraph
	 */
	private void drawBoolGraphFromList(Graphics2D g, LinkedList<Vector2Int> list) {
		if (list.size() <= 1)
			return;
		ListIterator<Vector2Int> iter = list.listIterator();
		LinkedList<Vector2Int> cornerPoints = new LinkedList<Vector2Int>();
		Vector2Int actual = list.getFirst();
		Path2D.Double path = new Path2D.Double();
		path.moveTo(actual.getX(), actual.getY());
		while (iter.hasNext()) {
			Vector2Int target = iter.next();
			// BooleanConnection
			path.lineTo(target.getX(), actual.getY()); // line to corner
			cornerPoints.add(new Vector2Int(target.getX(), actual.getY())); // save corner
			path.lineTo(target.getX(), target.getY()); // line to next Point
			actual = target;
		}
		g.draw(path);
		g.setColor(dotColor);
		for (Vector2Int p : cornerPoints) {
			drawDot(g, p);
		}
	}

	/**
	 * Helper Method to draw the UnitGraphPanel.
	 * {@link UnitGraph#paintComponent(Graphics)}
	 * <p>
	 * This Method draws the UnitGraph as DoubleGraph.
	 * 
	 * @param g2D to draw.
	 */
	private void drawDoubleGraph(Graphics2D g, List<UnitGraphPoint> points) {
		if (points.isEmpty())
			return;
		ListIterator<UnitGraphPoint> iter = points.listIterator();
		Vector2Int actual = iter.next().displayedPosition;
		Path2D.Double path = this.initBezier(actual);
		while (iter.hasNext()) {
			Vector2Int target = iter.next().displayedPosition;
			this.curveTo(path, actual, target);
			actual = target;
		}
		g.draw(path);

	}

	/**
	 * Helper Method to draw the UnitGraphPanel.
	 * {@link UnitGraph#paintComponent(Graphics)}
	 * <p>
	 * This Method draws the UnitGraph as DoubleGraph in EditMode.
	 * 
	 * @param g2D to draw.
	 */
	private void drawDoubleGraphInEditMode(Graphics2D g, Series series) {
		LinkedList<Vector2Int> before = new LinkedList<Vector2Int>();
		LinkedList<Vector2Int> after = new LinkedList<Vector2Int>();
		for (UnitGraphPoint p : series.points) {
			if (p.displayedPosition.getX() < editPosition.getX())
				before.add(p.displayedPosition);
			else
				after.add(p.displayedPosition);
		}
		drawUnitGraphFromList(g, before);
		drawUnitGraphFromList(g, after);
		// EditGraph
		LinkedList<Vector2Int> middle = new LinkedList<Vector2Int>();
		if (!before.isEmpty())
			middle.add(before.getLast());
		middle.add(editPosition);
		if (!after.isEmpty())
			middle.add(after.getFirst());

		g.setColor(editDotColor);
		drawUnitGraphFromList(g, middle);
	}

	/**
	 * Helper Method to draw the UnitGraphPanel.
	 * {@link UnitGraph#paintComponent(Graphics)}
	 * <p>
	 * This Method draws a partial Graph from a Position List as DoubleGraph.
	 * 
	 * @param g2D  to draw.
	 * @param list the PositionList to draw a DoubleGraph
	 */
	private void drawUnitGraphFromList(Graphics2D g, LinkedList<Vector2Int> list) {
		if (list.size() <= 1)
			return;
		ListIterator<Vector2Int> iter = list.listIterator();
		Vector2Int actual = list.getFirst();
		Path2D.Double path = this.initBezier(actual);
		while (iter.hasNext()) {
			Vector2Int target = iter.next();
			curveTo(path, actual, target);
			actual = target;
		}
		g.draw(path);
	}

	// Under the hood functions to calculate and function the
	/**
	 * A unitgraphpoint have a x and y position to store the data of a graph point.
	 * Also it have a displayposition to store the Position of the GraphPoints on
	 * the Canvas. e.g. when the canvas has 500 width and 200 height a GraphPoint
	 * with the X=0.5 and Y=1.0 should have a displayposition of (250,3) when border
	 * is 3.
	 */
	private void updateRepresentativePositions() {
		for (Series series : seriesList) {
			for (UnitGraphPoint p : series.points) {
				p.calcDisplayedPosition(border, widthWithBorder, heightWithBorder);
			}
		}
		this.globalCurve.ifPresent(curve -> {
			for (UnitGraphPoint p : curve.points) {
				p.calcDisplayedPosition(border, widthWithBorder, heightWithBorder);
			}
			for (UnitGraphPoint p : curve.zeroLinePoints) {
				p.calcDisplayedPosition(border, widthWithBorder, heightWithBorder);
			}
		});
		
	}

	/**
	 * Takes a List of GraphPoints and convert it to the actual UnitGraphPoints with
	 * displayposition in the {@link #seriesList}
	 * 
	 * @param stateCurve the list of GraphPoint
	 */
	private void overrideUnitGraph(Series series, LinkedList<Point2D.Double> stateCurve) {
		series.points.clear();
		for (Point2D.Double p : stateCurve) {
			UnitGraphPoint point = new UnitGraphPoint(p);
			point.calcDisplayedPosition(border, widthWithBorder, heightWithBorder);
			series.points.add(point);
		}
	}

	/**
	 * When the PanelSize Change the width and height to calculate the drawings have
	 * to be adjusted.
	 */
	private void calculateWidthHeight() {
		widthWithBorder = this.getWidth() - 2 * border;
		heightWithBorder = this.getHeight() - 2 * border;
	}

	/**
	 * Save the actualGraphPoint List to the GraphEditable Element.
	 */
	private void saveGraph() {
		for (Series series : seriesList) {
			LinkedList<Point2D.Double> actual = series.element.getStateGraph();
			actual.clear();
			for (UnitGraphPoint p : series.points) {
				actual.add(p.getPoint());
			}
			series.element.sampleGraph();
		}
	}

	/**
	 * Remove a UnitGraphPoint from the UnitGraphPoint list ({@link #seriesList}
	 * when its near a given Position.
	 * 
	 * @param mPosition
	 */
	private void removePointNearPosition(Series series, Vector2Int mPosition) {
		ListIterator<UnitGraphPoint> iter = series.points.listIterator();
		while (iter.hasNext()) {
			if (near(mPosition, iter.next().displayedPosition, series.type)) {
				iter.remove();
				break;
			}
		}

	}

	private void removePointsNearPosition(Vector2Int mPosition) {
		for (Series series : seriesList) {
			removePointNearPosition(series, mPosition);
		}
	}

	private Optional<Series> detectSeries(Vector2Int mPosition) {
		return seriesList.stream().min((a, b) -> {
			float minDistanceA = a.points.stream().map(point -> point.displayedPosition.getSquaredDistance(mPosition))
					.min(Float::compare).get();
			float minDistanceB = b.points.stream().map(point -> point.displayedPosition.getSquaredDistance(mPosition))
					.min(Float::compare).get();
			return Float.compare(minDistanceA, minDistanceB);
		});
	}

	/**
	 * Determine if the Point is a StartPoint , EndPoint or a NormalPoint a.k.a. in
	 * between Points.
	 * 
	 * @param mPosition The Position to check.
	 */
	private EditPointType detectStartEndPoint(Series series, Vector2Int mPosition) {
		UnitGraphPoint first = series.points.getFirst();
		UnitGraphPoint last = series.points.getLast();
		if (near(mPosition, first.displayedPosition, series.type))
			return EditPointType.StartPoint;
		else if (near(mPosition, last.displayedPosition, series.type))
			return EditPointType.EndPoint;
		else
			return EditPointType.Normal;
	}

	/**
	 * Determine if a Point is near the Cursor (depends on Mode what near means). To
	 * detect if it should grab the Point or create a new Point.
	 * 
	 * @param actual
	 * @param target
	 * @return
	 */
	private boolean near(Vector2Int actual, Vector2Int target, GraphType graphType) {
		switch (graphType) {
		case boolGraph: // Distance only with X
			int xDis = target.getX() - actual.getX();
			return xDis * xDis < clickThreshholdSquared;
		case doubleGraph:
			return actual.getSquaredDistance(target) < clickThreshholdSquared;
		default:
			return false;
		}
	}

	/**
	 * When the Mouse Drag a Point it updates each time the position.
	 * 
	 * @param newPosition
	 */
	private void updateEditPointPosition(Vector2Int newPosition, EditPointType editPointType, GraphType graphType) {
		// make it in the bounds of the UnitGraph no Point out of the Border
		Vector2Int currentPosition = setInBounds(newPosition);
		if (editPointType != EditPointType.Normal) {
			attachToBorder(currentPosition, editPointType);
		}
		if (graphType == GraphType.boolGraph) {
			snapBoolean(currentPosition);
		}
		editPosition = currentPosition;
	}

	/**
	 * No Point on the UnitGraph should exit the UnitGraph.
	 * 
	 * @param p the Position
	 * @return the updated Position.
	 */
	private Vector2Int setInBounds(Vector2Int p) {
		p.clampX(border, border + widthWithBorder);
		p.clampY(border, border + heightWithBorder);
		return p;
	}

	/**
	 * For Switches the Point have to be Snap to the Top or the Bottem.
	 * 
	 * @param p the Position
	 * @return the updated Position.
	 */
	private Vector2Int snapBoolean(Vector2Int p) {
		if (p.getY() < border + heightWithBorder / 2) {
			p.setY(border);
		} else {
			p.setY(border + heightWithBorder);
		}
		return p;
	}

	/**
	 * The First Point has to be at 0(LeftSide) and Last Point has to be at
	 * 1(RightSide).
	 * 
	 * @param p the Position
	 * @return the updated Position.
	 */
	private Vector2Int attachToBorder(Vector2Int p, EditPointType editPointType) {
		switch (editPointType) {
		case StartPoint:
			p.setX(border);
			break;
		case EndPoint:
			p.setX(border + widthWithBorder);
			break;
		default:
			break;
		}
		return p;
	}

	/**
	 * Insert a Position in the UnitGraphList at the right order. Its sorted based
	 * on the xValues.
	 * 
	 * @param pos The new UnitGraphPoints Position
	 */
	private void insertNewGraphPoint(Series series, Vector2Int pos) {
		setInBounds(pos);
		ListIterator<UnitGraphPoint> iter = series.points.listIterator();
		while (iter.hasNext()) {
			Vector2Int tempPosition = iter.next().displayedPosition;
			if (pos.getX() <= tempPosition.getX()) {
				// previous to go back a position to make the new point before the the Position
				// with greater X
				iter.previous();
				iter.add(generateUnitGraphPoint(pos));
				break;
			}
		}
		if (!iter.hasNext()) // if behind last point
		{
			iter.add(generateUnitGraphPoint(pos));
		}
	}

	/**
	 * Generate a UnitGraphPoint from a normal Position in the UnitGraph.
	 * 
	 * @param pos the normal pos with xValues from 0..Width and yValues from
	 *            0..Height
	 * @return a UnitGraphPoint
	 */
	private UnitGraphPoint generateUnitGraphPoint(Vector2Int pos) {
		UnitGraphPoint temp = new UnitGraphPoint((double) (pos.getX() - border) / (double) widthWithBorder,
				1 - (double) (pos.getY() - border) / (double) heightWithBorder, true);
		temp.displayedPosition = pos;
		return temp;
	}

	/**
	 * Update the Point Position
	 */
	@Override
	public void mouseDragged(MouseEvent e) {
		actualSeries.ifPresent(series -> {
			updateEditPointPosition(new Vector2Int(e.getPoint().x, e.getPoint().y), this.editPointType, series.type);
			updateGlobalCurve();
			repaint();
		});

	}

	@Override
	public void mouseMoved(MouseEvent e) {
	}

	@Override
	public void mouseClicked(MouseEvent e) {
	}

	@Override
	public void mouseEntered(MouseEvent e) {
	}

	@Override
	public void mouseExited(MouseEvent e) {
	}

	/**
	 * The First Step. When LeftMouseButton its checks if a point is to grab under
	 * the cursor or create a new Point. Then enter EditMode. When RightMouseButton
	 * its delete a point if its under the Curser.
	 */
	@Override
	public void mousePressed(MouseEvent e) {
		Vector2Int mPosition = new Vector2Int(e.getPoint().x, e.getPoint().y);
		actualSeries = detectSeries(mPosition);
		actualSeries.ifPresent(series -> {
			if (e.getButton() == MouseEvent.BUTTON3) {
				// RightMouseButtonEvent
				editPointType = detectStartEndPoint(series, mPosition);
				if (editPointType == EditPointType.Normal) {
					removePointsNearPosition(mPosition);
					repaint();
				}
				editMode = false;

			} else if (e.getButton() == MouseEvent.BUTTON1) {
				// LeftMouseButtonEvent
				editPointType = detectStartEndPoint(series, mPosition);
				removePointsNearPosition(mPosition);
				updateEditPointPosition(mPosition, editPointType, series.type);
				editMode = true;
				repaint();
			}
		});

	}

	/**
	 * The last step to save the Changes. Its insert the Hovering Point and exit
	 * EditMode.
	 */
	@Override
	public void mouseReleased(MouseEvent e) {
		if (editMode && actualSeries.isPresent()) {
			for (Series series : seriesList) {
				this.insertNewGraphPoint(series, editPosition);
			}
			editMode = false;
		}
		saveGraph();
		updateGlobalCurve();
		repaint();
	}

	/**
	 * When the Component is Resized.
	 *
	 * @param e ComponentEvent
	 */
	public void componentResized(ComponentEvent e) {
		calculateWidthHeight();
		updateRepresentativePositions();
		repaint();
	}

	@Override
	public void componentHidden(ComponentEvent e) {
	}

	@Override
	public void componentMoved(ComponentEvent e) {

	}

	@Override
	public void componentShown(ComponentEvent e) {
	}

	/**
	 * Resets the graph to normal.
	 */
	public void reset() {
		for (Series series : seriesList) {
			series.element.reset();
			overrideUnitGraph(series, series.element.getStateGraph());
		}
		repaint();
	}

	// LocalMode access methods...
	// To access a element from the GUI for the LocalMode
	public void setUseLocalPeriod(boolean state) {
		for (Series series : seriesList) {
			series.element.setUseLocalPeriod(state);
		}
	}

	public void setLocalPeriod(int localLength) {
		for (Series series : seriesList) {
			series.element.setLocalPeriod(localLength);
		}
	}

	public boolean isLocalPeriedDifferentInSeries() {
		return seriesList.stream().map(series -> series.element.getLocalPeriod()).distinct().count() > 1;
	}

	public int getFirstLocalPeriod() {
		return seriesList.isEmpty() ? 0 : seriesList.get(0).element.getLocalPeriod();
	}

	public boolean isUsingLocalPeriod() {
		return seriesList.stream().anyMatch(series -> series.element.isUsingLocalPeriod());
	}

}