1 /* 2 * This program interprets melodic lines given in ABC notation as a 3 * chromesthete might. 4 * 5 * A Pitch class will be defined, and will take center stage in the 6 * processing. 7 * 8 * Interpreting a melody in ABC notation will amount to flashing 9 * colored rectangles for the prescribed durations, while sounding 10 * the pitch! The color of the rectangle will correspond to pitch 11 * class. The duration will correspond to the duration of the note. 12 * 13 * For this first version of the program, the duration will be held 14 * constant at one beat. 15 * 16 * Three sorts of images will appear on the screen, the chromesthetic 17 * output box, a text input box, and an error message box. Simplicity 18 * of design is rendered by permitting only one box to be on the screen 19 * at a time. 20 * 21 * ABC represents notes in a manner consistent with these examples: 22 * C, D, E, C D E c d e 23 */ 24 25 package chromesthesia2; 26 27 import painter.SPainter; 28 import javax.swing.JOptionPane; 29 import javax.swing.SwingUtilities; 30 import java.util.Scanner; 31 32 public class Chromesthesia { 33 34 //INFRASTRUCTURE FOR THE PROGRAM -- LAUNCHING A "GRAPHICS" THREAD 35 36 public static void main(String[] args) { 37 SwingUtilities.invokeLater(new ThreadForGUI()); 38 } 39 40 public static class ThreadForGUI implements Runnable { 41 @Override 42 public void run() { 43 new Chromesthesia(); 44 } 45 } 46 47 public Chromesthesia() { 48 interpreter(); 49 } 50 51 //FEATURED VARIABLES 52 53 private static SPainter miro; 54 private static Pitch[] pitches; 55 56 // THE INTERPRETER 57 58 public static void interpreter() { 59 60 initialization(); // miro and pitches 61 62 String temp = ""; 63 while (true) { 64 String input = getInput(); 65 if (input.equalsIgnoreCase("EXIT")) { 66 break; 67 } else if (input.equalsIgnoreCase("AGAIN")){ 68 try { 69 70 playMelody(temp, pitches); 71 } catch (Exception ex) { 72 showErrorMessage(ex.toString()); 73 } 74 } else { 75 try { 76 temp = input; 77 playMelody(input, pitches); 78 } catch (Exception ex) { 79 showErrorMessage((ex.toString())); 80 } 81 } 82 } 83 cleanup(); // miro has to go 84 } 85 86 // METHODS PERTAINING TO THE CHROMESTHETIC PITCHES 87 private static Pitch[] establishPitches(SPainter painter) { 88 Pitch[] pitches = new Pitch[21]; 89 Pitch pitchMiddleC = new Pitch("C", painter); 90 pitches[0] = pitchMiddleC; 91 Pitch pitchLowC = new Pitch("C,", painter); 92 pitches[1] = pitchLowC; 93 Pitch pitchHighC = new Pitch("c", painter); 94 pitches[2] = pitchHighC; 95 Pitch pitchMiddleD = new Pitch("D", painter); 96 pitches[3] = pitchMiddleD; 97 Pitch pitchLowD = new Pitch("D,", painter); 98 pitches[4] = pitchLowD; 99 Pitch pitchHighD = new Pitch("d", painter); 100 pitches[5] = pitchHighD; 101 Pitch pitchMiddleE= new Pitch("E", painter); 102 pitches[6] = pitchMiddleE; 103 Pitch pitchLowE = new Pitch("E,", painter); 104 pitches[7] = pitchLowE; 105 Pitch pitchHighE = new Pitch("e", painter); 106 pitches[8] = pitchHighE; 107 Pitch pitchMiddleF = new Pitch("F", painter); 108 pitches[9] = pitchMiddleF; 109 Pitch pitchLowF = new Pitch("F,", painter); 110 pitches[10] = pitchLowF; 111 Pitch pitchHighF = new Pitch("f", painter); 112 pitches[11] = pitchHighF; 113 Pitch pitchMiddleG = new Pitch("G", painter); 114 pitches[12] = pitchMiddleG; 115 Pitch pitchLowG = new Pitch("G,", painter); 116 pitches[13] = pitchLowG; 117 Pitch pitchHighG = new Pitch("g", painter); 118 pitches[14] = pitchHighG; 119 Pitch pitchMiddleA = new Pitch("A", painter); 120 pitches[15] = pitchMiddleA; 121 Pitch pitchLowA = new Pitch("A,", painter); 122 pitches[16] = pitchLowA; 123 Pitch pitchHighA = new Pitch("a", painter); 124 pitches[17] = pitchHighA; 125 Pitch pitchMiddleB = new Pitch("B", painter); 126 pitches[18] = pitchMiddleB; 127 Pitch pitchLowB = new Pitch("B,", painter); 128 pitches[19] = pitchLowB; 129 Pitch pitchHighB = new Pitch("b", painter); 130 pitches[20] = pitchHighB; 131 return pitches; 132 } 133 private static Pitch find(String token, Pitch[] pitches) throws Exception { 134 for ( int i = 0; i < pitches.length; i = i + 1) { 135 Pitch pitch = pitches[i]; 136 if (pitch.abcName().equals(token)) { 137 return pitch; 138 } 139 } 140 throw new Exception("### PITCH " + token + " NOT FOUND"); 141 } 142 143 private static void display(Pitch[] pitches) { 144 for ( int i = 0; i < pitches.length; i = i + 1) { 145 System.out.println(pitches[i].toString()); 146 } 147 } 148 149 private static void playMelody(String input, Pitch[] pitches) throws Exception { 150 Scanner scanner = new Scanner(input); 151 while (scanner.hasNext()) { 152 String token = scanner.next(); 153 String pitchName; 154 String duration = ""; 155 if (token.indexOf(",") < 0) { 156 pitchName = token.substring(0, 1); 157 duration = token.substring(1); 158 } else { 159 pitchName = token.substring(0, 2); 160 duration = token.substring(2); 161 } 162 if (duration.length() == 0) { duration = "1"; } 163 Pitch pitch = find(pitchName, pitches); 164 pitch.play(duration); 165 } 166 } 167 168 // INITIALIZATION, CLEANUP, GETTING INPUT, ERROR MESSAGING 169 170 static private void showErrorMessage(String message) { 171 miro.setVisible(false); 172 JOptionPane.showMessageDialog(null, message); 173 } 174 175 private static void initialization() { 176 // ESTABLISH THE PAINTER AND GIVE IT A SUBSTANTIAL BRUSH WIDTH 177 miro = new SPainter("Chromesthesia", 500, 500); 178 miro.setVisible(false); 179 miro.setBrushWidth(7); 180 // ESTABLISH THE CHROMESTITIC PITCH CLASS OBJECTS 181 pitches = establishPitches(miro); 182 display(pitches); 183 } 184 185 private static String getInput() { 186 miro.setVisible(false); 187 String label = "Please enter a melody in ABC notation, AGAIN, or EXIT ... "; 188 String input = JOptionPane.showInputDialog(null, label); 189 miro.setVisible(true); 190 if ( input == null ) { input = ""; } 191 return input; 192 } 193 194 static private void cleanup() { 195 System.exit(0); 196 } 197 } 198