import java.awt.*; import java.awt.event.*; import java.awt.geom.Line2D; import java.awt.geom.RoundRectangle2D; import javax.swing.*; import javax.swing.event.*; public class Mod2Plot extends Panel implements MouseListener, Runnable, ChangeListener { Mod2State state; Point[] topOuter; Color[] currentIntensity; int[] arrowDirection; static int ARROW_UP = 1; static int ARROW_DOWN = 2; int current = 0; Point xAxisEndpt; Image main; Graphics imG; int mainWidth, mainHeight; // Need 2 different delta thetas because much shorter screen // difference for the wire rectangle to travel through the // y and x axis, than the x and -ve y axis, EVEN THOUGH the // real-world distance is the same. The solution is to use a small // delta theta for the short screen distances, and (3 times) larger // delta theta for the long screen distances. // // use short for 0 <= theta <= PI and PI <= theta < 3PI/2 // use long for PI/2 <= theta < PI and 3PI/2 <= theta < 0 private double deltaTheta = 0.5; private int xAxisAngle = 75; // degrees int halfway; private int wireRectWidth = 125; private int wireRectHeight = 90; //static Point origin = new Point(150,220); private Point origin = new Point(370,220); private int zAxisLength = 125; private int yAxisLength = 150; private int xAxisLength = 150; private double PIOverOneEighty = Math.PI/180.0; private double PIhalf = Math.PI/2.0; //static Point graphOrigin = new Point(70,330); private Point graphOrigin = new Point(30,330); int[] ix, iy; int iLabelX, iLabelY; static Color iColor = Color.red; int icurrent = 0; private Font boldFont = new Font("Serif",Font.BOLD, 18); int yBorder, yOffset; //AnimationTimer timer = new AnimationTimer(this, 50); private Thread tron; public boolean IsTronRunning; public boolean ThreadStarted; private int SleepTime = 50; // was 25 private double amplitudeScaler = 100.0; //static Color bgColor = new Color(194,235,255); private final Color bgColor = new Color(236,236,236); static Color axisColor = Color.black; static Color wireColor = Color.green.darker(); FontMetrics fm; int fontHeight; Graphics2D g2d; public StartStopClock ssc; private Label fast, slow; private static final Color maroon = new Color(185,50,50); public JSlider slider; private int SCROLLMIN=0, SCROLLMAX=250; public Mod2Plot(Mod2State state) { super(); this.state = state; IsTronRunning = false; ThreadStarted = false; setLayout(null); setBackground(bgColor); wireRectWidth = state.s125; wireRectHeight = state.s90; //origin = new Point(state.s370,state.s220); origin = new Point(state.s275,state.s145); zAxisLength = state.s125; yAxisLength = state.s150; xAxisLength = state.s150; PIOverOneEighty = Math.PI/180.0; PIhalf = Math.PI/2.0; //graphOrigin = new Point(state.s30,state.s330); graphOrigin = new Point(state.s190,state.s340); getPoints(); getGraphPoints(); icurrent = ix.length/4; ssc = new StartStopClock(state); ssc.button1.setEnabled(true); ssc.button2.setEnabled(true); add(ssc); //start stop clock ssc.setBounds(state.s318,state.s480,state.s194,state.s60); ssc.button1.addMouseListener(this); ssc.button2.addMouseListener(this); setupSpeedAdjust(); IsTronRunning = false; ThreadStarted = false; // Get font sizes: setFont(boldFont); fm = getFontMetrics(getFont()); fontHeight = fm.getHeight(); } public synchronized void initialPlot() { state.reset(); ssc.clockcanvas.setStatus(0,state.NTime,state.dtime); ssc.clockcanvas.reset(); //mainWidth = origin.x+yAxisLength+40; //mainHeight = xAxisEndpt.y+60+fontHeight+10; mainWidth = state.s540; mainHeight = state.s530 - state.s80; //main = createImage(mainWidth, mainHeight); //imG = main.getGraphics(); GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment(); GraphicsDevice gs = ge.getDefaultScreenDevice(); GraphicsConfiguration gc = gs.getDefaultConfiguration(); main = gc.createCompatibleImage(mainWidth, mainHeight, Transparency.TRANSLUCENT); imG = main.getGraphics(); g2d = (Graphics2D)imG; g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); paintImage(imG); paintAnimationStuff(imG); repaint(); } private void setupSpeedAdjust() { fast = new Label("faster",Label.RIGHT); fast.setFont(TheFonts.sanSerif11); fast.setBackground(bgColor); fast.setForeground(maroon); add(fast); slow = new Label("slower",Label.LEFT); slow.setFont(TheFonts.sanSerif11); slow.setBackground(bgColor); slow.setForeground(Color.blue); add(slow); int shiftx, shifty; // To control positioning of slider to // draw the faster/slower arrow tips //On top of clock shiftx = 0; shifty = 0; // On Left of cloack shiftx = state.s250; shifty = state.s62; slider = new JSlider(SCROLLMIN,SCROLLMAX); //slider = new Scrollbar(Scrollbar.HORIZONTAL,200,1,SCROLLMIN,SCROLLMAX); add(slider); //slider to change animation speed slider.setBounds(state.s290-shiftx,state.s440+shifty,state.s250,state.s15); fast.setBounds(state.s479-shiftx,state.s458+shifty,state.s40,state.s15); slow.setBounds(state.s313-shiftx,state.s458+shifty,state.s100,state.s15); /* slider.setBackground(Color.white); //panels for slider Panel slide0 = new Panel(); slide0.setBackground(Color.cyan); add(slide0); slide0.setBounds(state.s290-shiftx-1,state.s440+shifty-1,state.s250+2,state.s15+2); Panel slide1 = new Panel(); slide1.setBackground(Color.black); add(slide1); slide1.setBounds(state.s290-shiftx-2,state.s440+shifty-2,state.s250+4,state.s15+4); */ slider.addChangeListener(this); } public synchronized void stateChanged(ChangeEvent evt){ if(evt.getSource()==slider){ boolean repaint = !IsTronRunning; IsTronRunning = false; SleepTime = SCROLLMAX - slider.getValue(); if (SleepTime < 5) SleepTime = 5; //amplitudeScaler = 100 * (50/SleepTime); amplitudeScaler = 100 * (250.0/(SleepTime+200)); getGraphPoints(); if (repaint) { paintImage(imG); repaint(); } else IsTronRunning = true; } } public void mouseClicked(MouseEvent evt){mouseHandler(evt);} public void mouseEntered(MouseEvent evt){;} public void mouseExited(MouseEvent evt){;} public void mousePressed(MouseEvent evt){;} public void mouseReleased(MouseEvent evt){;} private synchronized void mouseHandler(MouseEvent evt){ if(evt.getSource() == ssc.button1){ IsTronRunning = true; if(!ThreadStarted){ start(); ThreadStarted = true; ssc.button1.setEnabled(false); ssc.button2.setEnabled(true); } else{ ssc.button1.setEnabled(false); ssc.button2.setEnabled(true); notify(); } //c1.setEnabled(false); repaint(); } if(evt.getSource() == ssc.button2){ IsTronRunning = false; ssc.button2.setEnabled(false); ssc.button1.setEnabled(true); //c1.setEnabled(true); repaint(); } } public void start(){ if(tron == null){ tron = new Thread(this); tron.start(); } } public void run(){ while(true){ if(IsTronRunning){ animate(); ssc.clockcanvas.increment(); state.increment(); } try{ Thread.sleep(SleepTime); synchronized(this){ while(!IsTronRunning){wait();} } } catch(InterruptedException e){e.printStackTrace();} } } private synchronized void getPoints() { // Get the endpoint for the x-axis: int xComp = (int) (Math.cos(xAxisAngle*Math.PI/180.0)*xAxisLength); int yComp = (int) (Math.sin(xAxisAngle*Math.PI/180.0)*xAxisLength); xAxisEndpt = new Point(origin.x - xComp, origin.y + yComp); // get the top-outer points of the moving rectangle int npts = (int) (360/deltaTheta); current = npts/4; halfway = npts/2; topOuter = new Point[npts]; currentIntensity = new Color[npts]; arrowDirection = new int[npts]; double thetaInRadians; Point circleOrigin = new Point(origin.x, origin.y - wireRectHeight); double theta = 0.0; for (int i = 0; i < npts; i++, theta+=deltaTheta) { thetaInRadians = theta * PIOverOneEighty; //xComp = (int) (wireRectWidth * Math.cos(thetaInRadians)); //yComp = (int) (wireRectWidth * Math.sin(thetaInRadians)); xComp = (int) (wireRectWidth * Math.cos(thetaInRadians-PIhalf)); // CHANGE - MAKE LOOP DESCRIBE AN ELLIPTICAL TRAJECTORY TO GIVE ILLUSION OF 3D //yComp = (int) (wireRectWidth * Math.sin(thetaInRadians-PIhalf)); yComp = (int) (wireRectWidth * Math.sin(thetaInRadians-PIhalf) - 0.66*wireRectWidth * Math.sin(thetaInRadians-PIhalf)); topOuter[i] = new Point(circleOrigin.x+xComp, circleOrigin.y-yComp); if (theta >= 0.0 && theta < 90.0) { currentIntensity[i] = RedColors.getSinLevel(1.0-((90.0-theta)/90.0)); arrowDirection[i] = ARROW_UP; } else if (theta >= 90.0 && theta < 180.0) { currentIntensity[i] = RedColors.getSinLevel(1.0-((theta-90.0)/90.0)); arrowDirection[i] = ARROW_UP; } else if (theta >= 180.0 && theta < 270.0) { currentIntensity[i] = RedColors.getSinLevel(1.0-((270-theta)/90.0)); arrowDirection[i] = ARROW_DOWN; } else { currentIntensity[i] = RedColors.getSinLevel(1.0-((theta-270)/90.0)); arrowDirection[i] = ARROW_DOWN; } } } private synchronized void getGraphPoints() { int iForILabel = 0; //int npts = (360/deltaTheta) + 1; int npts = (int) (360/deltaTheta); //icurrent = npts/4; ix = new int[npts]; iy = new int[npts]; double thetaInRadians, xPoint; double oneOverOneEighty = 1.0/180.0; double theta = 0.0; for (int i = 0; i < npts; i++, theta+=deltaTheta) { if (theta == 90.0) iForILabel = i; thetaInRadians = theta * PIOverOneEighty; //iy[i] = (int) (100 * Math.sin(thetaInRadians)); iy[i] = (int) (amplitudeScaler * Math.sin(thetaInRadians)); xPoint = i*deltaTheta*oneOverOneEighty; ix[i] = (int) (xPoint*100); // scale x so 360 degress spans 200; } // NOW push the sine wave DOWN on the Y-axis, so that the sine // wave appears in the middle of the screen, rather that at the TOP for (int i = 0; i < iy.length; i++) { iy[i] += graphOrigin.y; } flipCoordinates(iy,graphOrigin.y); // NOW shift the X-axis over by xMin to make room for the vertical // axis line. for (int i = 0; i < ix.length; i++) { ix[i] += graphOrigin.x; } iLabelX = ix[iForILabel] + state.s20; iLabelY = iy[iForILabel]; } private synchronized void flipCoordinates(int[] coords, int flipAround) { int delta; for (int i = 0; i < coords.length; i++) { delta = coords[i] - flipAround; coords[i] = flipAround - delta; } } public synchronized void paintImage(Graphics g) { g.clearRect(0,0,mainWidth,mainHeight); g.setColor(bgColor); g.fillRect(0,0,mainWidth,mainHeight); g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); // Draw x and y axis: drawAxis(g); g.setColor(wireColor); drawLine(g,origin.x,origin.y,origin.x, origin.y - wireRectHeight); drawGraphAxis(g); g2d.setStroke(new BasicStroke(state.s2,BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND)); g.setFont(new Font("Serif",Font.BOLD + Font.ITALIC, state.font20)); g.setColor(iColor); g.drawString("I",iLabelX,iLabelY); g2d.drawPolyline(ix,iy,ix.length); g2d.setStroke(new BasicStroke(1)); int shiftx, shifty; // To control positioning of slider to // draw the faster/slower arrow tips //On top of clock shiftx = 0; shifty = 0; // On Left of cloack shiftx = state.s250; shifty = state.s62; g.setColor(Color.blue); MaestroG.drawArrowtip(state.s297-shiftx,state.s465+shifty,8,g); MaestroG.drawArrowtip(state.s305-shiftx,state.s465+shifty,8,g); g.setColor(maroon); MaestroG.drawArrowtip(state.s525-shiftx,state.s465+shifty,7,g); MaestroG.drawArrowtip(state.s533-shiftx,state.s465+shifty,7,g); } private void drawGraphAxis(Graphics g) { // Draw x and y axis: g.setColor(axisColor); // draw y-axis drawLineThick(g,(double)graphOrigin.x, (double)(graphOrigin.y-state.s105),(double)graphOrigin.x, (double)(graphOrigin.y + state.s105), state.s1, axisColor); // draw x-axis drawLineThick(g,(double)graphOrigin.x, (double)(graphOrigin.y),(double)(graphOrigin.x+state.s218), (double)(graphOrigin.y), state.s1, axisColor); g.setFont(new Font("Serif",Font.BOLD, state.font18)); g.drawString("time",graphOrigin.x + state.s230, graphOrigin.y + (int)(0.5*fontHeight)); Arrows.drawDblUpArrow(g,graphOrigin.x,graphOrigin.y - state.s107, state.sfactor); Arrows.drawDblDownArrow(g,graphOrigin.x,graphOrigin.y + state.s107, state.sfactor); Arrows.drawDblRightArrow(g,graphOrigin.x + state.s220,graphOrigin.y, state.sfactor); //g.drawString("time",graphOrigin.x + state.s230, // graphOrigin.y + (int)(0.5*fontHeight)); } public void update(Graphics g) { paint(g); } public void paint(Graphics g) { g.drawImage(main,0,0,this); slider.requestFocusInWindow(); } public synchronized void paintAnimationStuff(Graphics g) { g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); int thick = state.s5; g.setColor(wireColor); g2d.setPaint(wireColor); g2d.setStroke(new BasicStroke(thick,BasicStroke.CAP_BUTT,BasicStroke.JOIN_ROUND)); g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON); float alpha; int rule = AlphaComposite.SRC_OVER; g2d.setComposite(AlphaComposite.getInstance(rule, 0.5f)); g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON); //DRAW THE CURRENT LOOP Polygon pH = new Polygon(); pH.addPoint(origin.x, origin.y); pH.addPoint(origin.x, origin.y - wireRectHeight); pH.addPoint(topOuter[current].x, topOuter[current].y); pH.addPoint(topOuter[current].x, topOuter[current].y+wireRectHeight); g.drawPolygon(pH); //g.fillPolygon(pH); g2d.setComposite(AlphaComposite.getInstance(rule, 1.0f)); g2d.setStroke(new BasicStroke(1)); /* //Vertical Wire along z-axis drawLineThick(g,(double)origin.x, (double)(origin.y),(double)origin.x, (double)(origin.y - wireRectHeight), state.s5, wireColor); //Top Wire parallel to x-y plane drawLineThick(g,(double)origin.x, (double)(origin.y - wireRectHeight),(double)topOuter[current].x, (double)(topOuter[current].y), state.s5, wireColor); //Vertical Wire parallel to z-axis drawLineThick(g,(double)topOuter[current].x, (double)(topOuter[current].y),(double)topOuter[current].x, (double)(topOuter[current].y+wireRectHeight), state.s5, wireColor); //Bottom wire on x-y plane drawLineThick(g,(double)topOuter[current].x, (double)(topOuter[current].y+wireRectHeight),(double)origin.x, (double)origin.y, state.s5, wireColor); */ // draw the current vector: g.setFont(new Font("Serif",Font.BOLD + Font.ITALIC, state.font20)); g.setColor(Color.red); g.drawString("I",origin.x+state.s20,origin.y-state.s35); if (currentIntensity[current] != RedColors.levels[10]) { //g.setColor(currentIntensity[current]); //drawLine(g,origin.x+state.s10,origin.y-state.s27,origin.x+state.s10, // origin.y-wireRectHeight+state.s35); drawLineThick(g,(double)(origin.x+state.s10), (double)(origin.y-state.s27),(double)(origin.x+state.s10), (double)(origin.y-wireRectHeight+state.s35), state.s1, currentIntensity[current]); //if (current <= halfway) // Arrows.drawDblDownArrow(g,origin.x,origin.y-7); //else // Arrows.drawDblUpArrow(g,origin.x,origin.y-wireRectHeight+7); if (arrowDirection[current] == ARROW_UP) Arrows.drawDblUpArrow(g,origin.x+state.s10,origin.y-wireRectHeight+state.s33, state.sfactor); else Arrows.drawDblDownArrow(g,origin.x+state.s10,origin.y-state.s25, state.sfactor); } //if (!ssc.IsStop) { // //g.setColor(Color.black); // g.setColor(Color.orange); // g.fillOval(ix[icurrent]-3,iy[icurrent]-3,6,6); //} if (!ssc.IsStop) {g.setColor(Color.yellow); g.fillOval(ix[current]-state.s4,iy[current]-state.s4,state.s9,state.s8); g.setColor(Color.black); g.drawOval(ix[current]-state.s4,iy[current]-state.s4,state.s9,state.s8); } } private void drawAxis(Graphics g) { // Draw x and y axis: g.setColor(axisColor); //drawLine(g,origin.x,origin.y,origin.x,origin.y-zAxisLength); //z-axis drawLineThick(g,(double)origin.x, (double)(origin.y),(double)origin.x, (double)(origin.y-zAxisLength+state.s2), state.s1, axisColor); //drawLine(g,origin.x,origin.y,origin.x+yAxisLength,origin.y); // y-axis drawLineThick(g,(double)origin.x, (double)(origin.y),(double)(origin.x+yAxisLength-state.s2), (double)(origin.y), state.s1, axisColor); //drawLine(g,origin.x,origin.y,xAxisEndpt.x,xAxisEndpt.y); // x-axis //drawLineThick(g,(double)origin.x, (double)(origin.y),(double)(xAxisEndpt.x), (double)(xAxisEndpt.y), state.s1, axisColor); drawLineThick(g,(double)origin.x, (double)(origin.y),(double)(origin.x - state.s15), 0.7*(double)(xAxisEndpt.y), state.s1, axisColor); // Draw arrow heads for axes Arrows.drawDblUpArrow(g,origin.x,origin.y-zAxisLength, state.sfactor); g.setFont(new Font("Serif",Font.BOLD, state.font18)); g.drawString("z",origin.x-(int)(0.5*fm.stringWidth("z")), origin.y-zAxisLength-5); Arrows.drawDblRightArrow(g,origin.x+yAxisLength,origin.y, state.sfactor); g.drawString("y",origin.x+yAxisLength+5,origin.y+(fontHeight/2)); Point[] xArrow = Arrows.getDblArrowHeadPts(origin.x - state.s15,(int)(0.7*xAxisEndpt.y), origin.x, origin.y, state.sfactor); g.drawString("x",origin.x - state.s25-fm.stringWidth("x"), (int)(0.7*xAxisEndpt.y)); Arrows.drawArrowHead(g,xArrow); // Draw B field g.setColor(Color.blue); //drawLine(g,xAxisEndpt.x-40,origin.y+20,origin.x+yAxisLength-20,origin.y+20); drawLineThick(g,(double)(xAxisEndpt.x-state.s40), (double)(origin.y+state.s20),(double)(origin.x+yAxisLength-state.s10), (double)(origin.y+state.s20), state.s1, Color.blue); //drawLine(g,xAxisEndpt.x-40,origin.y-20,origin.x+yAxisLength-20,origin.y-20); drawLineThick(g,(double)(xAxisEndpt.x-state.s40), (double)(origin.y-state.s20),(double)(origin.x+yAxisLength-state.s10), (double)(origin.y-state.s20), state.s1, Color.blue); //drawLine(g,xAxisEndpt.x-40,origin.y-60,origin.x+yAxisLength-20,origin.y-60); drawLineThick(g,(double)(xAxisEndpt.x-state.s40), (double)(origin.y-state.s60),(double)(origin.x+yAxisLength-state.s10), (double)(origin.y-state.s60), state.s1, Color.blue); Arrows.drawDblRightArrow(g,origin.x+yAxisLength-state.s8,origin.y+state.s20, state.sfactor); Arrows.drawDblRightArrow(g,origin.x+yAxisLength-state.s8,origin.y-state.s20, state.sfactor); Arrows.drawDblRightArrow(g,origin.x+yAxisLength-state.s8,origin.y-state.s60, state.sfactor); g.drawString("B",origin.x+yAxisLength,origin.y-state.s60); // g.setColor(axisColor); } private void drawLine(Graphics g, int x1, int y1, int x2, int y2) { if (y1 != y2) { g.drawLine(x1,y1,x2,y2); //g.drawLine(x1+1,y1,x2+1,y2); } else { g.drawLine(x1,y1,x2,y2); //g.drawLine(x1,y1+1,x2,y2+1); } } public static void drawLineThick(Graphics g, double x1, double y1, double x2, double y2, int thick, Color color){ Graphics2D g2d = (Graphics2D)g; g2d.setPaint(color); g2d.setStroke(new BasicStroke(thick,BasicStroke.CAP_BUTT,BasicStroke.JOIN_ROUND)); g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON); Line2D.Double line = new Line2D.Double(x1,y1,x2,y2); g2d.draw(line); g2d.setStroke(new BasicStroke(1)); g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_OFF); } public static void drawLineThickB(Graphics g, double x1, double y1, double x2, double y2, int thick, int pat1, int pat2, Color color){ Graphics2D g2d = (Graphics2D)g; g2d.setPaint(color); float[] dashPattern = {pat1,pat2}; g2d.setStroke(new BasicStroke(thick,BasicStroke.CAP_BUTT,BasicStroke.JOIN_MITER,10.0F,dashPattern,0)); g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON); Line2D.Double line = new Line2D.Double(x1,y1,x2,y2); g2d.draw(line); g2d.setStroke(new BasicStroke(1.0F,BasicStroke.CAP_BUTT,BasicStroke.JOIN_MITER)); g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_OFF); } public synchronized void animate() { current+=4; icurrent+=4; if (current >= topOuter.length) current = 0; if (icurrent >= ix.length) icurrent = 0; paintImage(imG); paintAnimationStuff(imG); repaint(); } }