import java.awt.*; import java.awt.event.*; import java.awt.font.*; import java.lang.*; import java.awt.image.*; import java.net.*; import java.text.*; import java.awt.image.BufferedImage; import java.io.IOException; import javax.imageio.ImageIO; //import java.util.Map; //import java.util.Hashtable; //import java.util.jar.Attributes; // Chapter 3 Module 2 public class Mod2Info extends Panel { private static final Color bgcolor = new Color(236,236,236); //private static final Color bgcolor = Color.white; private Label titlelabel; Mod2State state; String s = null; int endingX; DecimalFormat dec = new DecimalFormat("#.#"); //DecimalFormat decTheta = new DecimalFormat("###.###"); static double piOver180 = Math.PI/180.0; public NewOutputCanvas2 outInfo; public Mod2Info(Mod2State state) { super(); setBackground(bgcolor); setLayout(null); this.state = state; titlelabel = new Label("Output",Label.CENTER); //titlelabel.setFont(TheFonts.bold14); titlelabel.setFont(TheFonts.bold16); add(titlelabel); titlelabel.setBounds(15,5,70,18); titlelabel.setBackground(bgcolor); outInfo = new NewOutputCanvas2(state); add(outInfo); // total width = 285, height = 257 ////infoPanel.setBounds(517,469,450,128); //outInfo.setBounds(0,24,285,233); //outInfo.setBounds(4,24,285,100); outInfo.setBounds(4,24,400,100); } public void displayGradient() { // 1. also need to check for FIRST param w/ coeff1 = -1 ... // so just set s = "-sin..." or "-x ..." or "-e ..." // 2. FIX slider so only goes up or down by .1 instead of .001!!!! boolean anyFirstTerm = true; state.sOutput = " "; s = ""; switch(state.currentFunction) { case Mod2State.polynomial: if (state.coeff1 == 0) { anyFirstTerm = false; s = ""; // ALSO NO xhat!! } else if (Math.abs(state.coeff1) == 1.0) { if (state.coeff1 == -1.0) s = STR.BOLD+"-"+STR.ENDBOLD; if (state.exp1 == 0) { s += STR.XHAT+"x"+STR.ENDXHAT; //x**0 = 1 } else { s += STR.BOLD+"x"+STR.ENDBOLD; if (state.exp1 == 1.0) s += " "+STR.XHAT+"x"+STR.ENDXHAT; else s += STR.SUP+dec.format(state.exp1)+STR.ENDSUP+ " "+STR.XHAT+"x"+STR.ENDXHAT; } } else { if (state.exp1 == 0) { //s = dec.format(state.coeff1)+ s = STR.BOLD+dec.format(state.coeff1)+STR.ENDBOLD+ " "+STR.XHAT+"x"+STR.ENDXHAT; //x**0 = 1 } else { //s = dec.format(state.coeff1)+"x"; s = STR.BOLD+dec.format(state.coeff1)+"x"+STR.ENDBOLD; if (state.exp1 == 1.0) s += " "+STR.XHAT+"x"+STR.ENDXHAT; else s += STR.SUP+dec.format(state.exp1)+STR.ENDSUP+ " "+STR.XHAT+"x"+STR.ENDXHAT; } } if (state.coeff2 == 0) { // NO yhat !! } else if (Math.abs(state.coeff2) == 1.0) { if (state.coeff2 == -1) s += STR.BOLD+" -"+STR.ENDBOLD; else s += STR.BOLD+" +"+STR.ENDBOLD; if (anyFirstTerm) s += " "; if (state.exp2 == 0) { s += STR.YHAT+"y"+STR.ENDYHAT; //y**0 = 1 } else { s += STR.BOLD+"y"+STR.ENDBOLD; if (state.exp2 == 1.0) s += " "+STR.YHAT+"y"+STR.ENDYHAT; else s += STR.SUP+dec.format(state.exp2)+STR.ENDSUP+ " "+STR.YHAT+"y"+STR.ENDYHAT; } } else { if (state.exp2 == 0) { if (state.coeff2 < 0) s += STR.BOLD+" -"+STR.ENDBOLD; else s += STR.BOLD+" +"+STR.ENDBOLD; if (anyFirstTerm) s += " "; s += STR.BOLD+dec.format(Math.abs(state.coeff2))+ STR.ENDBOLD+STR.YHAT+"y"+STR.ENDYHAT; //y**0 = 1 } else { if (state.coeff2 < 0) s += STR.BOLD+" -"+STR.ENDBOLD; else s += STR.BOLD+" +"+STR.ENDBOLD; if (anyFirstTerm) s += " "; s += STR.BOLD+dec.format(Math.abs(state.coeff2))+"y"+ STR.ENDBOLD; if (state.exp2 == 1.0) s += " "+STR.YHAT+"y"+STR.ENDYHAT; else s += STR.SUP+dec.format(state.exp2)+STR.ENDSUP+ " "+STR.YHAT+"y"+STR.ENDYHAT; } } //state.sOutput = Character.toString((char)0x2207)+STR.BOLDITAL+"f"+ // STR.ENDBOLDITAL+" = "+s; break; case Mod2State.exponential: if (state.coeff1 == 0) { anyFirstTerm = false; s = ""; // ALSO NO xhat!! } else if (Math.abs(state.coeff1) == 1.0) { if (state.coeff1 == -1.0) s = STR.BOLD+"-"+STR.ENDBOLD; if (state.exp1 == 0) { s += STR.XHAT+"x"+STR.ENDXHAT; //x**0 = 1 } else { s += STR.BOLD+"e"+STR.ENDBOLD; if (state.exp1 == 1.0) s += STR.SUP+"x"+STR.ENDSUP+STR.XHAT+"x"+STR.ENDXHAT; else s += STR.SUP+dec.format(state.exp1)+"x"+STR.ENDSUP+ STR.XHAT+"x"+STR.ENDXHAT; } } else { if (state.exp1 == 0) { s = STR.BOLD+dec.format(state.coeff1)+STR.ENDBOLD+ STR.XHAT+"x"+STR.ENDXHAT; //x**0 = 1 } else { s = STR.BOLD+dec.format(state.coeff1)+"e"+STR.ENDBOLD; if (state.exp1 == 1.0) s += STR.SUP+"x"+STR.ENDSUP+STR.XHAT+"x"+STR.ENDXHAT; else s += STR.SUP+dec.format(state.exp1)+"x"+STR.ENDSUP+ STR.XHAT+"x"+STR.ENDXHAT; } } if (state.coeff2 == 0) { // NO yhat !! } else if (Math.abs(state.coeff2) == 1.0) { if (state.coeff2 == -1) s += STR.BOLD+" -"+STR.ENDBOLD; else s += STR.BOLD+" +"+STR.ENDBOLD; if (anyFirstTerm) s += " "; if (state.exp2 == 0) { s += STR.YHAT+"y"+STR.ENDYHAT; //e**0 = 1 } else { s += STR.BOLD+"e"+STR.ENDBOLD; if (state.exp2 == 1.0) s += STR.SUP+"y"+STR.ENDSUP+STR.YHAT+"y"+STR.ENDYHAT; else s += STR.SUP+dec.format(state.exp2)+"y"+STR.ENDSUP+ STR.YHAT+"y"+STR.ENDYHAT; } } else { if (state.exp2 == 0) { if (state.coeff2 < 0) s += STR.BOLD+" -"+STR.ENDBOLD; else s += STR.BOLD+" +"+STR.ENDBOLD; if (anyFirstTerm) s += " "; s += STR.BOLD+dec.format(Math.abs(state.coeff2))+ STR.ENDBOLD+STR.YHAT+"y"+STR.ENDYHAT; //e**0 = 1 } else { if (state.coeff2 < 0) s += STR.BOLD+" -"+STR.ENDBOLD; else s += STR.BOLD+" +"+STR.ENDBOLD; if (anyFirstTerm) s += " "; s += STR.BOLD+dec.format(Math.abs(state.coeff2))+"e"+ STR.ENDBOLD; if (state.exp2 == 1.0) s += STR.SUP+"y"+STR.ENDSUP+STR.YHAT+"y"+STR.ENDYHAT; else s += STR.SUP+dec.format(state.exp2)+"y"+STR.ENDSUP+ STR.YHAT+"y"+STR.ENDYHAT; } } //state.sOutput = Character.toString((char)0x2207)+STR.BOLDITAL+"f"+ // STR.ENDBOLDITAL+" = "+s; break; case Mod2State.sinusoidal: if (state.coeff1 == 0) { anyFirstTerm = false; s = ""; // ALSO NO xhat!! } else if (Math.abs(state.coeff1) == 1.0) { if (state.coeff2 == 0) { //s = STR.BOLD+"sin(0)"+STR.ENDBOLD+STR.XHAT+"x"+STR.ENDXHAT; // Since sin(0) is 0, NO xhat!! s = ""; } else { if (state.coeff1 == -1.0) s = STR.BOLD+"-"+STR.ENDBOLD; s += STR.BOLD+"sin("+STR.ENDBOLD; if (state.coeff2 == 1.0) s += STR.BOLD+"x)"+STR.ENDBOLD+STR.XHAT+"x"+STR.ENDXHAT; else s += STR.BOLD+dec.format(state.coeff2)+"x)"+ STR.ENDBOLD+STR.XHAT+"x"+STR.ENDXHAT; } } else { if (state.coeff2 == 0) { //s = STR.BOLD+dec.format(state.coeff1)+ // "sin(0)"+STR.ENDBOLD+STR.XHAT+"x"+STR.ENDXHAT; // Since sin(0) is 0, NO xhat!! s = ""; } else { s = STR.BOLD+dec.format(state.coeff1); if (state.coeff2 == 1.0) s += "sin(x)"+STR.ENDBOLD+STR.XHAT+"x"+STR.ENDXHAT; else s += "sin("+dec.format(state.coeff2)+"x)"+STR.ENDBOLD+ STR.XHAT+"x"+STR.ENDXHAT; } } if (state.coeff3 == 0) { // ALSO NO yhat!! } else if (Math.abs(state.coeff3) == 1.0) { if (state.coeff3 == -1) s += STR.BOLD+" -"+STR.ENDBOLD; else s += STR.BOLD+" +"+STR.ENDBOLD; if (anyFirstTerm) s += " "; if (state.coeff4 == 0) { //s += " + cos(0)"+STR.YHAT+"y"+STR.ENDYHAT; // since cos(0) is 1: s += STR.YHAT+"y"+STR.ENDYHAT; } else { s += STR.BOLD+"cos("; if (state.coeff4 == 1.0) s += "y)"+STR.ENDBOLD+STR.YHAT+"y"+STR.ENDYHAT; else s += dec.format(state.coeff4)+"y)"+STR.ENDBOLD+ STR.YHAT+"y"+STR.ENDYHAT; } } else { if (state.coeff3 < 0) s += STR.BOLD+" -"+STR.ENDBOLD; else s += STR.BOLD+" +"+STR.ENDBOLD; if (anyFirstTerm) s += " "; if (state.coeff4 == 0) { //s += dec.format(Math.abs(state.coeff3))+ // "cos(0)"+STR.YHAT+"y"+STR.ENDYHAT; // Since cos(0) is 1: s += STR.BOLD+dec.format(Math.abs(state.coeff3))+ STR.ENDBOLD+STR.YHAT+"y"+STR.ENDYHAT; } else { s += STR.BOLD+dec.format(Math.abs(state.coeff3)); if (state.coeff4 == 1.0) s += "cos(y)"+STR.ENDBOLD+STR.YHAT+"y"+STR.ENDYHAT; else s += "cos("+dec.format(state.coeff4)+"y)"+STR.ENDBOLD+ STR.YHAT+"y"+STR.ENDYHAT; } } //state.sOutput = Character.toString((char)0x2207)+STR.BOLDITAL+"f"+ // STR.ENDBOLDITAL+" = "+s; } if (s.length() == 0) s = STR.BOLD+"0"+STR.ENDBOLD; // Peel off preceding character because CHEERPJ doesn't render // it. Later, will write 'nabla' image in front of sOutput // //state.sOutput = Character.toString((char)0x2207)+STR.BOLDITAL+"f"+ state.sOutput = STR.BOLDITAL+"f"+ STR.ENDBOLDITAL+" = "+s; outInfo.repaint(); } public void paint(Graphics g){ g.setColor(bgcolor.darker()); g.fillRect(0,getSize().height-2,getSize().width,2); g.fillRect(getSize().width-2,0,2,getSize().height); g.setColor(bgcolor.brighter()); g.fillRect(0,0,2,getSize().height-1); g.fillRect(0,0,getSize().width-2,2); } } class NewOutputCanvas2 extends Canvas{ private static Font normalfont; private static Font subfont; private static Font boldfont; Mod2State state; private int endingX; private Image im; private Graphics buf; private BufferedImage nabla; public NewOutputCanvas2(Mod2State state){ super(); this.state = state; normalfont = state.sanSerifFont.deriveFont(12f); subfont = state.sanSerifFont.deriveFont(10f); boldfont = TheFonts.bold14; getImages(); } private void getImages() { // read in the nabla images, because CHEERPJ does not render this // symbol in any font! (java to javascript converter) try { nabla = ImageIO.read(getClass().getResource("nabla.png")); } catch (IOException e) { e.printStackTrace(); } } public void paint(Graphics g){ if(im == null){ im = createImage(getSize().width,getSize().height); buf = im.getGraphics(); drawCanvas(buf); } else{ drawCanvas(buf); } g.drawImage(im,0,0,null); } //Addition to reduce flicker new routine public void update(Graphics g){ // added to avoid clearing paint(g); } public void clear(){ this.getGraphics().clearRect(0,0,getSize().width,getSize().height); repaint(); } public void drawCanvas(Graphics g){ Graphics2D g2d = (Graphics2D)g; g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON); //g.setFont(state.ttfFont.deriveFont(14f)); Color bgcolor = new Color(236,236,236); g.setColor(bgcolor); g.fillRect(0,0,getSize().width-6,getSize().height-6); g.setColor(Color.black); if (state.sOutput != null) { //g.setFont(TheFonts.sanSerif14); g.setFont(boldfont); //endingX = STR.displayString(state.sOutput,g,16,40); // NEW: replacing above line, d/t CHEEPJ problems with spec. chars // (image goes -13 pixels on y-axis) g.drawImage(nabla,16,27,this); endingX = STR.displayString(state.sOutput,g,31,40); } } }