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

package ui.view;

import classes.*;
import ui.controller.Control;
import ui.model.Model;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.CubicCurve2D;
import java.awt.geom.GeneralPath;
import java.awt.geom.Line2D;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.LinkedList;

/**
 * This Class represents a Graph where the User can model the behavior of
 * elements and switches over time.
 * 
 * @author Gruppe14
 */
public class UnitGraph extends JPanel implements MouseListener, MouseMotionListener, ComponentListener {

	private static final long serialVersionUID = 1L;
	private GeneralPath graphCurve = new GeneralPath();
	private float maximum = 0;
	// Information shown when a Point is Dragged
	private String dragInformation = "";
	// Points
	private Point recSize = new Point(8, 8); // Point Size
	private Graphics2D g2;
	private CubicCurve2D c = new CubicCurve2D.Double();
	private CubicCurve2D cr = new CubicCurve2D.Double();
	private CubicCurve2D cl = new CubicCurve2D.Double();
	private LinkedList<Point> pointList;
	// Scale for the Graph
	private double scaleX;
	private double scaleY;
	private float[] arrayOfFloats = null;
	private boolean[] arrayOfBooleans = null;
	private double width = -1;
	private double height = -1;
	private boolean isElement = false;
	private boolean isSwitch = false;
	private ArrayList<HolonElement> tempElements = new ArrayList<>();
	private Model model;
	private Control controller;
	private Line2D.Double line = null;
	private boolean pointDrag = false;
	private boolean init = true;
	private Point tempP = null;
	private double x = 0, y = 0;
	private int x1, x2, y1, y2, ctrlx1, ctrly1, ctrlx2, ctrly2;

	private int border = 4;
	private int textWidth = 0;

	/**
	 * Constructor.
	 * 
	 * @param model
	 *            the Model
	 * @param control
	 *            the Controller
	 */
	public UnitGraph(final Model model, Control control) {
		setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
		this.controller = control;
		this.model = model;

		this.pointList = new LinkedList<>();
		this.setBackground(Color.WHITE);

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

	/**
	 * Paints all Components on the Canvas.
	 * 
	 * @param g
	 *            Graphics
	 * 
	 */
	public void paintComponent(Graphics g) {
		super.paintComponent(g);
		g2 = (Graphics2D) g;
		RenderingHints rh = new RenderingHints(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
		g2.setRenderingHints(rh);
		g2.setStroke(new BasicStroke(0));

		graphCurve.reset();

		border = (int) recSize.getX() >> 1;
		// Draw the Vertical Lines
		g2.setColor(Color.BLACK);
		for (int i = border; i < this.getWidth() - border; i += border * 2) {
			g2.drawLine(i, border, i, this.getHeight() - border);
		}
		g2.drawLine(this.getWidth() - border, border, this.getWidth() - border, this.getHeight() - border);

		for (int i = border; i < this.getHeight() - border; i += border * 2) {
			g2.drawLine(border, i, this.getWidth() - border, i);
		}
		g2.drawLine(border, this.getHeight() - border, this.getWidth() - border, this.getHeight() - border);

		if (isElement) {
            // fill array with values from the pointList in a HolonElement
            fillArrayofValue();

			if (arrayOfFloats != null) {
				// Draw the Lines
				g2.setStroke(new BasicStroke(2));
				g2.setColor(Color.BLACK);
				for (int i = 0; i < pointList.size() - 1; i++) {
					c = buildCurve(pointList.get(i), pointList.get(i + 1));
					c.setCurve((x1 * scaleX) + border, (y1 * scaleY) + border, (ctrlx1 * scaleX) + border,
							(ctrly1 * scaleY) + border, (ctrlx2 * scaleX) + border, (ctrly2 * scaleY) + border,
							(x2 * scaleX) + border, (y2 * scaleY) + border);
					graphCurve.append(c, true);
				}
				g2.draw(graphCurve);

				// Draw the Points
				g2.setColor(Color.BLUE);
				for (Point aPointList : pointList) {
					g2.fillOval((int) (aPointList.getX() * scaleX - recSize.getX() / 2) + border,
							(int) (aPointList.getY() * scaleY - recSize.getY() / 2) + border,
							(int) recSize.getX(), (int) recSize.getY());
				}

				// Iteration Value
				textWidth = g.getFontMetrics().stringWidth("" + arrayOfFloats[model.getCurIteration()]) + 2;
				if (textWidth
						+ (model.getCurIteration()) * (this.getWidth() - (border * 2)) / (model.getIterations() - 1) + 2
						+ border <= this.getWidth()) {
					g2.drawString("" + arrayOfFloats[model.getCurIteration()],
							(model.getCurIteration()) * (this.getWidth() - (border * 2)) / (model.getIterations() - 1)
									+ 2 + border,
							this.getHeight() - 10);
				} else {
					g2.drawString("" + arrayOfFloats[model.getCurIteration()],
							(model.getCurIteration()) * (this.getWidth() - (border * 2)) / (model.getIterations() - 1)
									+ border - textWidth,
							this.getHeight() - 10);
				}

			}
			// drag Information
			if (tempP != null && pointDrag) {
				dragInformation = "" + convertToValueY(getYValueAt((int) tempP.getX()));
				textWidth = g.getFontMetrics().stringWidth("" + convertToValueY(getYValueAt((int) tempP.getX()))) + 2;
				if (textWidth + (tempP.getX() * scaleX) + 10 + border <= this.getWidth()) {
					g2.drawString(dragInformation, (int) (tempP.getX() * scaleX) + 10 + border,
							(int) (tempP.getY() * scaleY) + 10);
				} else {
					g2.drawString(dragInformation, (int) (tempP.getX() * scaleX) - textWidth,
							(int) (tempP.getY() * scaleY) + 10);
				}
			}

			/*
			 * // Actual Iteration Point Visualization g2.setColor(Color.RED);
			 * if (arrayOfFloats != null) { for (int i = 0; i <
			 * arrayOfFloats.length; i++) { g2.fillOval((int) (i * width /
			 * (model.getIterations() - 1) * scaleX - recSize.getX() /
			 * 2)+border, (int) (convertToCanvasY((int) arrayOfFloats[i]) *
			 * scaleY - recSize.getY() / 2)+border, (int) recSize.getX(), (int)
			 * recSize.getY()); } }
			 */

		} else if (isSwitch) {
			if (arrayOfBooleans != null) {
				// array fillen
				fillArrayofBooleans();

				// Draw the Lines
				g2.setStroke(new BasicStroke(2));
				g2.setColor(Color.BLACK);
				for (int i = 0; i < pointList.size() - 1; i++) {
					// Left out of bounce
					if ((i == 1 || i == 2) && pointList.get(i).getX() < 0) {
						line = new Line2D.Double(border, pointList.get(i).getY() * scaleY, border,
								pointList.get(i + 1).getY() * scaleY);
					}
					// Right out of bounce
					else if (i == pointList.size() - 4 && pointList.get(pointList.size() - 3).getX() > width) {
						line = new Line2D.Double(pointList.get(i).getX() * scaleX + border,
								pointList.get(i).getY() * scaleY, this.getWidth() - border,
								pointList.get(i + 1).getY() * scaleY);
					} else if (i == pointList.size() - 3 && pointList.get(pointList.size() - 3).getX() > width) {
						line = new Line2D.Double(this.getWidth() - border, pointList.get(i).getY() * scaleY,
								this.getWidth() - border, pointList.get(i + 1).getY() * scaleY);
					} else if (i == pointList.size() - 2 && pointList.get(pointList.size() - 2).getX() > width) {
						line = new Line2D.Double(this.getWidth() - border, pointList.get(i).getY() * scaleY,
								pointList.get(i + 1).getX() * scaleX + border, pointList.get(i + 1).getY() * scaleY);
					} else {
						line = new Line2D.Double(pointList.get(i).getX() * scaleX + border,
								pointList.get(i).getY() * scaleY, pointList.get(i + 1).getX() * scaleX + border,
								pointList.get(i + 1).getY() * scaleY);
					}
					graphCurve.append(line, true);
				}
				g2.draw(graphCurve);

				/*
				 * // Draw the Points g2.setColor(Color.BLUE); for (int i = 0; i
				 * < pointList.size() - 0; i++) { g2.fillOval((int)
				 * (pointList.get(i).getX() * scaleX - recSize.getX() / 2) +
				 * border, (int) (pointList.get(i).getY() * scaleY -
				 * recSize.getY() / 2), (int) recSize.getX(), (int)
				 * recSize.getY()); }
				 */

				// Iteration Value
				g2.setColor(Color.BLUE);
				textWidth = g.getFontMetrics().stringWidth("" + arrayOfBooleans[model.getCurIteration()]) + 2;
				if (textWidth
						+ (model.getCurIteration()) * (this.getWidth() - (border * 2)) / (model.getIterations() - 1) + 2
						+ border <= this.getWidth()) {
					g2.drawString("" + arrayOfBooleans[model.getCurIteration()],
							(model.getCurIteration()) * (this.getWidth() - (border * 2)) / (model.getIterations() - 1)
									+ 2 + border,
							this.getHeight() - 10);
				} else {
					g2.drawString("" + arrayOfBooleans[model.getCurIteration()],
							(model.getCurIteration()) * (this.getWidth() - (border * 2)) / (model.getIterations() - 1)
									+ border - textWidth,
							this.getHeight() - 10);
				}

			}
			// When the switch graph is dragged
			if (tempP != null && pointDrag)

			{
				try {
					int i;
					for (i = 0; (i * (this.getWidth() - (border * 2)) / (model.getIterations() - 1)
							+ border < getMousePosition().getX()); i++) {
					}
					dragInformation = "" + i;
					textWidth = g.getFontMetrics().stringWidth("" + convertToValueY(getYValueAt((int) tempP.getX())))
							+ 2;
					if (textWidth + (tempP.getX() * scaleX) + 10 + border <= this.getWidth()) {
						g2.drawString(dragInformation, (int) (getMousePosition().getX()) + 10 + border,
								(int) (getMousePosition().getY() * scaleY) + 10);
					} else {
						g2.drawString(dragInformation, (int) (getMousePosition().getX()) - textWidth,
								(int) (getMousePosition().getY() * scaleY) + 10);
					}
				} catch (Exception e) {
				}
			}
		}

		// Iteration Line
		g2.setColor(Color.BLUE);
		g2.setStroke(new BasicStroke(1));
		g2.drawLine(border + (model.getCurIteration()) * (this.getWidth() - border * 2) / (model.getIterations() - 1),
				0, border + (model.getCurIteration()) * (this.getWidth() - border * 2) / (model.getIterations() - 1),
				this.getHeight());

		// algorithmus
		controller.calculateStateForTimeStep(model.getCurIteration());
        // TODO: trigger update of GUI->HolonElement-Table (like triggerUpdateController in GUI)
    }

	@Override
	public void mouseDragged(MouseEvent e) {
		if (isElement) {
			elementDragged(e);
		} else if (isSwitch) {
			switchDragged(e);
		}
	}

	/**
	 * When a Point of a Holon Element is dragged.
	 * 
	 * @param e
	 *            MouseEvent
	 */
	public void elementDragged(MouseEvent e) {
		if (pointDrag && tempP != null) {
			// Out of Bounds verhindern
			int i = pointList.indexOf(tempP);
			x = (e.getX() - border) / scaleX;
			y = (e.getY() - border) / scaleY;
			// y
			if (e.getY() <= border) {
				y = 0;
			} else if (this.getHeight() - border <= e.getY()) {
				y = (this.getHeight() - border * 2) / scaleY;
			}
			// x
			if (tempP == pointList.getFirst() || tempP == pointList.getLast() || pointList.get(i + 1).getX() < x + 2
					|| pointList.get(i - 1).getX() > x - 2 || pointList.getFirst().getX() > x - 2
					|| pointList.getLast().getX() < x + 2) {
				x = tempP.getX();
			}
			tempP.setLocation(x, y);

			repaint();
		}
	}

	/**
	 * When a Point of a switch is dragged.
	 * 
	 * @param e
	 *            MouseEvent
	 */
	public void switchDragged(MouseEvent e) {
		if (pointDrag && tempP != null && tempP != pointList.getFirst() && tempP != pointList.getLast()) {
			int i = pointList.indexOf(tempP);
			x = (e.getX() - border) / scaleX;

			if (pointList.get(i + 1).getY() == tempP.getY()) {
				// x
				if (pointList.get(i + 1).getX() <= x + 1 || pointList.get(i - 2).getX() >= x - 1) {
					x = tempP.getX();
				}
				pointList.get(i - 1).setLocation(x, pointList.get(i - 1).getY());
			} else {
				// x
				if (pointList.get(i + 2).getX() <= x + 1 || pointList.get(i - 1).getX() >= x - 1) {
					x = tempP.getX();
				}
				pointList.get(i + 1).setLocation(x, pointList.get(i + 1).getY());
			}
			tempP.setLocation(x, tempP.getY());
			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) {
	}

	@Override
	public void mousePressed(MouseEvent e) {
		if (isElement) {
			elementPressed(e);
		} else if (isSwitch) {
			switchPressed(e);
		}

	}

	/**
	 * When a point of a Holon Element is pressed.
	 * 
	 * @param e
	 *            MouseEvent
	 */
	public void elementPressed(MouseEvent e) {
		boolean added = false;
		boolean deletePoint = false;

		int x = (int) ((e.getX() - border) / scaleX);
		double y = (e.getY() - border) / scaleY;

		// Click on Point
		tempP = null;
		if (pointList != null) {
			// look if a point was clicked
			for (Point p : pointList) {
				if (x >= p.getX() - recSize.getX() / 2 && y >= p.getY() - recSize.getY() / 2
						&& x <= p.getX() + recSize.getX() / 2 && y <= p.getY() * scaleY + recSize.getY() / 2) {
					if (e.getButton() == MouseEvent.BUTTON3) {
						tempP = p;
						deletePoint = true;
					} else {
						pointDrag = true;
						tempP = p;
					}
				}
			}
			// New Point
			if (!pointDrag && e.getButton() != MouseEvent.BUTTON3 && e.getX() != 0
					&& e.getX() != this.getWidth() / scaleX) {
				for (int i = 0; i < pointList.size(); i++) {
					// When a point already exist on this x position
					if (x == pointList.get(i).getX() || x == width || x == 0) {
						break;
					}
					if (x < pointList.get(i).getX() && !added) {
						if (e.getY() <= border) {
							pointList.add(i, new Point((int) (x), 0));
						} else {
							pointList.add(i, new Point((int) (x), (int) y));
						}
						added = true;
						pointDrag = true;
						tempP = pointList.get(i);
					}
				}
			}
			// Delete a Point
			if (deletePoint && tempP.getX() != 0
					&& (tempP.getX() != this.getWidth() / scaleX || tempP != pointList.getLast())) {
				pointList.remove(tempP);
			}

			repaint();
		}
	}

	/**
	 * When a point of a Switch is pressed.
	 * 
	 * @param e
	 *            MouseEvent
	 */
	public void switchPressed(MouseEvent e) {
		boolean added = false;
		boolean deletePoint = false;

		double x = (e.getX() - border) / scaleX;
		e.getY();

		// Halbe Iterations Distanz
		double dist = (width / (model.getIterations() - 1)) / 2;

		// Click on Point
		tempP = null;
		if (pointList != null) {
			for (Point p : pointList) {
				if (x >= p.getX() - dist * 2 && x <= p.getX() + dist * 2) {
					if (e.getButton() == MouseEvent.BUTTON3) {
						tempP = p;
						deletePoint = true;
					} else {
						pointDrag = true;
						tempP = p;
					}
				}
			}
			// New Point
			if (!pointDrag && e.getButton() != MouseEvent.BUTTON3 && x != 0 && x != width) {
				for (int i = 0; i < pointList.size() && !added; i++) {
					if (x < pointList.get(i).getX() - dist) {
						// double p1, p2 um location der points zu bestimmen
						double p1 = pointList.get(i - 1).getX();
						double p2 = pointList.get(i).getX();
						// Punkte hinzufügen, je nachdem ob true oder false
						if (pointList.get(i - 1).getY() != (int) (height / 6)
								&& pointList.get(i).getY() != (int) (height / 6)) {
							pointList.add(i, new Point((int) ((x + p2) / 2 + dist), (int) (height - height / 6)));
							pointList.add(i, new Point((int) ((x + p2) / 2 + dist), (int) (height / 6)));
							pointList.add(i, new Point((int) ((x + p1) / 2 - dist), (int) (height / 6)));
							pointList.add(i, new Point((int) ((x + p1) / 2 - dist), (int) (height - height / 6)));
							added = true;
						} else if (pointList.get(i - 1).getY() == (int) (height / 6)
								&& pointList.get(i).getY() == (int) (height / 6)) {
							pointList.add(i, new Point((int) ((x + p2) / 2 + dist), (int) (height / 6)));
							pointList.add(i, new Point((int) ((x + p2) / 2 + dist), (int) (height - height / 6)));
							pointList.add(i, new Point((int) ((x + p1) / 2 - dist), (int) (height - height / 6)));
							pointList.add(i, new Point((int) ((x + p1) / 2 - dist), (int) (height / 6)));
							added = true;
						}
					}
				}
			}

			// Delete a Point
			if (deletePoint && tempP != pointList.getFirst() && tempP != pointList.getLast()) {
				int i = pointList.indexOf(tempP);
				// If Right, else if Left
				if (tempP.getY() == (int) (height / 6) && i < pointList.size() - 1 && i > 0) {
					pointList.remove(i);
					pointList.remove(i - 1);
					pointList.remove(i - 2);
					pointList.remove(i - 3);
				} else if (tempP.getY() == (int) (height - height / 6)) {
					pointList.remove(i + 2);
					pointList.remove(i + 1);
					pointList.remove(i);
					pointList.remove(i - 1);
				}
			}

			repaint();
		}
	}

	@Override
	public void mouseReleased(MouseEvent e) {
		if (pointDrag) {
			pointDrag = false;
			tempP = null;
		}
		/**
		 * reset the dragInformation.
		 */
		dragInformation = "";
		repaint();
	}

	/**
	 * When the Component is Resized.
	 * 
	 * @param e
	 *            ComponentEvent
	 */
	public void componentResized(ComponentEvent e) {
		// Wenn ein anderes Element genommen wird
		if (init) {
			init = false;
			// for scale on the first initialisation
			if (width == -1 && height == -1) {
				width = this.getWidth() - (border * 2);
				height = this.getHeight() - (border * 2);
			}
			// Scale
			scaleX = (this.getWidth() - (border * 2)) / width;
			scaleY = (this.getHeight() - (border * 2)) / height;

            // set the scroll graph invisible
            this.getParent().getParent().setVisible(false);
		}

		// Scale
		scaleX = (this.getWidth() - (border * 2)) / width;
		scaleY = (this.getHeight() - (border * 2)) / height;
		repaint();
	}

	@Override
	public void componentHidden(ComponentEvent e) {
	}

	@Override
	public void componentMoved(ComponentEvent e) {

	}

	@Override
	public void componentShown(ComponentEvent e) {
	}

	/**
	 * Empty the Graph.
	 */
	public void empty() {
		pointList = null;
		tempElements = null;
		arrayOfFloats = null;
		arrayOfBooleans = null;
		isSwitch = false;
		isElement = false;
		repaint();
	}

	/**
	 * Resets the Points for the Element.
	 */
	public void reset() {
		pointList.removeAll(pointList);
		if (isSwitch) {
			pointList.addFirst(new Point(-border, (int) (height / 6)));
			pointList.addLast(new Point((int) ((this.getWidth()) / scaleX), (int) (height / 6)));
		} else {
			pointList.addFirst(new Point(0, 0));
			pointList.addLast(new Point((int) ((this.getWidth() - (border * 2)) / scaleX), 0));
		}
		repaint();
	}

	/**
	 * converts the number to fit the canvas.
	 * 
	 * @param d
	 *            the number to convert
	 * @return the converted number
	 */
	public double convertToCanvasY(float d) {
		return (height - (d * (height / maximum)));
	}

	/**
	 * converts the number to fit the value.
	 * 
	 * @param d
	 *            the number to convert
	 * @return the converted number
	 */
	public float convertToValueY(double d) {
		return (float) Math.round(((height - (height * (d / height))) / (height / maximum)) * 10) / 10;
	}

	/**
	 * Visualize the HolonElement on the Graph.
	 * 
	 * @param selectedElement
	 *            which should be visualized
	 */
	public void repaintWithNewElement(ArrayList<HolonElement> selectedElement) {
		arrayOfFloats = selectedElement.get(selectedElement.size() - 1).getAvailableEnergyPerElementAt();
		tempElements = selectedElement;
		pointList = selectedElement.get(selectedElement.size() - 1).getGraphPoints();
		isSwitch = false;
		isElement = true;
		maximum = getMaximum(selectedElement.get(selectedElement.size() - 1));
		// First time clicked on the Element
		if (pointList.isEmpty()) {
			pointList.addFirst(new Point(0, 0));
			pointList.addLast(new Point((int) ((this.getWidth() - (border * 2)) / scaleX), 0));
		}
		repaint();
	}

	/**
	 * Visualize the Switch on the Graph.
	 * 
	 * @param s
	 *            which should be visualized
	 */
	public void repaintWithNewSwitch(HolonSwitch s) {
		arrayOfBooleans = s.getActiveAt();
		pointList = s.getGraphPoints();
		isSwitch = true;
		isElement = false;
		// First time clicked on the Element
		if (pointList.isEmpty()) {
			pointList.addFirst(new Point(-border, (int) (height / 6)));
			pointList.addLast(new Point((int) ((this.getWidth()) / scaleX), (int) (height / 6)));
		}
		repaint();
	}

	/**
	 * Build a Curve for the Graph.
	 * 
	 * @param p1
	 *            startpoint
	 * @param p2
	 *            endpoint
	 * 
	 * @return the CubicCurve2D for the Graph
	 */
	public CubicCurve2D buildCurve(Point p1, Point p2) {
		x1 = (int) p1.getX();
		y1 = (int) p1.getY();
		x2 = (int) p2.getX();
		y2 = (int) p2.getY();

		// calculate the controllpoints
		ctrlx1 = x1 + (x2 - x1) / 2;
		ctrlx2 = x2 - (x2 - x1) / 2;
		if (y1 < y2) {
			ctrly1 = y1 + (y2 - y1) / 10;
			ctrly2 = y2 - (y2 - y1) / 10;
		} else {
			ctrly1 = y1 - (y1 - y2) / 10;
			ctrly2 = y2 + (y1 - y2) / 10;
		}

		// set the curve
		c.setCurve(x1 * scaleX, y1 * scaleY, ctrlx1 * scaleX, ctrly1 * scaleY, ctrlx2 * scaleX, ctrly2 * scaleY,
				x2 * scaleX, y2 * scaleY);
		return c;
	}

	/**
	 * Fills the Arrays with booleans.
	 */
	public void fillArrayofBooleans() {
		for (int i = 0; i < arrayOfBooleans.length; i++) {
			int t = (int) getYValueAt((int) (i * width / (model.getIterations() - 1)));
			if (t <= height / 2) {
				arrayOfBooleans[i] = true;
			} else {
				arrayOfBooleans[i] = false;
			}

		}
	}

	/**
	 * Fills the Arrays of each HolonElement.
	 */
	@SuppressWarnings("unchecked")
	public void fillArrayofValue() {
        for (HolonElement he : tempElements) {
            maximum = getMaximum(he);
			he.setGraphPoints((LinkedList<Point>) pointList.clone());
			for (int i = 0; i < arrayOfFloats.length; i++) {
				he.getAvailableEnergyPerElementAt()[i] = convertToValueY(getYValueAt2((int) (i * width / (model.getIterations() - 1))));
			}
			arrayOfFloats = he.getAvailableEnergyPerElementAt();
		}
	}

	/**
	 * Get the Y Value at the x Coordination.
	 * 
	 * @param xVal
	 *            the x value for the y value
	 * @return y, the value at x
	 */
	public float getYValueAt(int xVal) {
		for (int i = 0; i < pointList.size() - 1; i++) {
			// get the Points
			if (xVal <= pointList.get(i + 1).getX()) {
				// Curve erstellen
				Line2D l1 = new Line2D.Double(pointList.get(i).getX(), pointList.get(i).getY(),
						pointList.get(i + 1).getX(), pointList.get(i + 1).getY());
				Line2D l2 = new Line2D.Double(xVal, 0, xVal, height);
				return getIntersectionPoint(l1, l2);
			}
		}
		return 0;
	}

	/**
	 * Get y value at the x Coordination via curves.
	 * 
	 * @param xVal
	 *            the x value for the y value
	 * @return y value at x
	 */
	public float getYValueAt2(int xVal) {
		for (int i = 0; i < pointList.size() - 1; i++) {
			// get the Points
			if (xVal >= pointList.get(i).getX()) {
				// Curve erstellen
				c = buildCurve(pointList.get(i), pointList.get(i + 1));
				c.subdivide(cl, cr);
				// Teil der Kurve aussuchen
				if (cl.getX1() <= xVal * scaleX && cl.getX2() > xVal * scaleX) {
					c = cl;
					// Kurve Links von "unten"
					if (pointList.get(i).getY() >= pointList.get(i + 1).getY()) {
						for (float j = (float) (height - 1); j >= 0; j -= 0.1f) {
							if (c.contains(xVal * scaleX, j * scaleY)) {
								return (float) (j);
							}
						}
					} else {// Kurve Links von "oben"
						for (float j = 0; j < height; j += 0.1f) {
							if (c.contains(xVal * scaleX, j * scaleY)) {
								return (float) (j);
							}
						}
					}
				} else {
					c = cr;
					// Kurve Links von "unten"
					if (pointList.get(i).getY() >= pointList.get(i + 1).getY()) {
						for (float j = 0; j < height; j += 0.1f) {
							if (c.contains(xVal * scaleX, j * scaleY)) {
								return (float) (j);
							}
						}
					} else {// Kurve Links von "oben"
						for (float j = (float) (height - 1); j >= 0; j -= 0.1f) {
							if (c.contains(xVal * scaleX, j * scaleY)) {
								return (float) (j);
							}
						}
					}
				}
			}
		}
		// else
		return getYValueAt(xVal);
	}

	/**
	 * Get the Intersection Point of 2 Lines.
	 * 
	 * @param l1
	 *            the first Line
	 * @param l2
	 *            the second Line
	 * 
	 * @return The Intersection Point
	 */
	public float getIntersectionPoint(Line2D l1, Line2D l2) {
		if (!l1.intersectsLine(l2)) {
			return 0;// null;
		}
		double px = l1.getX1(), py = l1.getY1(), rx = l1.getX2() - px, ry = l1.getY2() - py;
		double qx = l2.getX1(), qy = l2.getY1(), sx = l2.getX2() - qx, sy = l2.getY2() - qy;

		double det = sx * ry - sy * rx;
		if (det == 0) {
			return 0;// null;
		} else {
			double z = (sx * (qy - py) + sy * (px - qx)) / det;
			if (z < 0 || z > 1) {
				return 0;// new Point(0, 0); // intersection at end point!
			}
			return (float) (py + z * ry);// new Point((int) (px + z * rx), (int)
											// (py + z * ry));
		}
	} // end intersection line-line

	public void update(ArrayList<AbstractCpsObject> obj) {

		ArrayDeque<AbstractCpsObject> queue = new ArrayDeque<>();

		AbstractCpsObject u = null;
		queue.addAll(obj);

		while (!queue.isEmpty()) {
			u = queue.pop();

            repaintGraph(u);
        }
        empty();

        if (u instanceof CpsUpperNode)
            for (AbstractCpsObject adjacent : ((CpsUpperNode) u).getNodes()) {
                queue.add(adjacent);
            }
    }

    void repaintGraph(AbstractCpsObject u) {
        ArrayList<HolonElement> list = new ArrayList<>();

        if (u instanceof HolonObject) {
            for (HolonElement ele : ((HolonObject) u).getElements()) {
                list.add(ele);
                repaintWithNewElement(list);
                fillArrayofValue();
                list.remove(0);
            }
        } else if (u instanceof HolonSwitch) {
            repaintWithNewSwitch((HolonSwitch) u);
            fillArrayofBooleans();
        }
    }

	float getMaximum(HolonElement ele) {
		if (ele.isFlexible()) {
			return ele.getFlexibleEnergyAvailablePerElement();
		} else {
			return ele.getEnergyPerElement();
		}
	}
}