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 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 1 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, F, G, A, B, C D E F G A B c d e f g a b 23 * 24 * Google ABC music representation if you would like to know more about it. 25 */ 26 27 28 package chromesthesia2; 29 30 import painter.SPainter; 31 import javax.swing.*; 32 import java.util.Scanner; 33 34 public class Chromesthesia { 35 36 // INFRASTRUCTURE FOR THE PROGRAM -- LAUNCHING A "GRAPHICS" THREAD 37 38 public static void main(String[] args) { 39 SwingUtilities.invokeLater(new ThreadForGUI()); 40 } 41 42 private static class ThreadForGUI implements Runnable { 43 @Override 44 public void run() { 45 new Chromesthesia(); 46 } 47 } 48 49 public Chromesthesia() { 50 interpreter(); 51 } 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 String lastInput= null; 62 63 while ( true ) { 64 String input = getInput(); 65 if ( input.equalsIgnoreCase("EXIT")) { 66 break; 67 } else if (input.equalsIgnoreCase("AGAIN") && lastInput!=null) { 68 try { 69 playMelody(lastInput, pitches); 70 } catch (Exception x) { 71 showErrorMessage(x.toString()); 72 } 73 }else { 74 try { 75 playMelody(input, pitches); 76 lastInput = input; 77 } catch (Exception ex) { 78 showErrorMessage(ex.toString()); 79 } 80 } 81 } 82 83 // cleanup(); //miro has to go 84 miro.end(); 85 } 86 87 88 89 // METHODS PERTAINING TO THE CHROMESTHETIC PITCHES 90 91 private static Pitch[] establishPitches(SPainter painter) { 92 Pitch[] pitches = new Pitch[21]; 93 Pitch pitchMiddleC = new Pitch("C", painter); 94 pitches[0] = pitchMiddleC; 95 Pitch pitchLowC = new Pitch("C," , painter); 96 pitches[1] = pitchLowC; 97 Pitch pitchHighC = new Pitch("c" , painter); 98 pitches[2] = pitchHighC; 99 Pitch pitchMiddleD = new Pitch("D" , painter); 100 pitches[3] = pitchMiddleD; 101 Pitch pitchLowD = new Pitch("D," , painter); 102 pitches[4] = pitchLowD; 103 Pitch pitchHighD = new Pitch("d" , painter); 104 pitches[5] = pitchHighD; 105 Pitch pitchMiddleE = new Pitch("E" , painter); 106 pitches[6] = pitchMiddleE; 107 Pitch pitchLowE = new Pitch("E," , painter); 108 pitches[7] = pitchLowE; 109 Pitch pitchHighE = new Pitch("e" , painter); 110 pitches[8] = pitchHighE; 111 Pitch pitchMiddleF = new Pitch("F", painter); 112 pitches[9] = pitchMiddleF; 113 Pitch pitchLowF = new Pitch("F," , painter); 114 pitches[10] = pitchLowF; 115 Pitch pitchHighF = new Pitch("f" , painter); 116 pitches[11] = pitchHighF; 117 Pitch pitchMiddleG = new Pitch("G", painter); 118 pitches[12] = pitchMiddleG; 119 Pitch pitchLowG = new Pitch("G," , painter); 120 pitches[13] = pitchLowG; 121 Pitch pitchHighG = new Pitch("g" , painter); 122 pitches[14] = pitchHighG; 123 Pitch pitchMiddleA = new Pitch("A", painter); 124 pitches[15] = pitchMiddleA; 125 Pitch pitchLowA = new Pitch("A," , painter); 126 pitches[16] = pitchLowA; 127 Pitch pitchHighA = new Pitch("a" , painter); 128 pitches[17] = pitchHighA; 129 Pitch pitchMiddleB = new Pitch("B", painter); 130 pitches[18] = pitchMiddleB; 131 Pitch pitchLowB = new Pitch("B," , painter); 132 pitches[19] = pitchLowB; 133 Pitch pitchHighB = new Pitch("b" , painter); 134 pitches[20] = pitchHighB; 135 return pitches; 136 } 137 138 private static Pitch find(String token, Pitch[] pitches) throws Exception { 139 for ( int i = 0; i < pitches.length; i = i+1) { 140 Pitch pitch = pitches[i]; 141 if ( pitch.abcName().equals(token)) { 142 return pitch; 143 } 144 } 145 throw new Exception("### PITCH " + token + " NOT FOUND"); 146 } 147 148 private static void display(Pitch[] pitches) { 149 for ( int i = 0; i < pitches.length; i = i+1) { 150 System.out.println(pitches[i].toString()); 151 } 152 } 153 154 private static void playMelody(String input, Pitch[] pitches) throws Exception { 155 Scanner scanner = new Scanner(input); 156 while (scanner.hasNext()) { 157 String token = scanner.next(); 158 String pitchName; 159 String duration = ""; 160 if (token.indexOf(",") < 0) { 161 pitchName = token.substring(0, 1); 162 duration = token.substring(1); 163 } else { 164 pitchName = token.substring(0, 2); 165 duration = token.substring(2); 166 } 167 if (duration.length() == 0) { 168 duration = "1"; 169 } 170 Pitch pitch = find(pitchName, pitches); 171 pitch.play(duration); 172 } 173 } 174 175 176 177 178 // INITIALIZATION, CLEANUP, GETTING INPUT, ERROR MESSAGING 179 180 static private void showErrorMessage(String message) { 181 miro.setVisible(false); 182 JOptionPane.showMessageDialog(null, message); 183 } 184 185 private static void initialization() { 186 // ESTABLISH THE PAINTER AND GIVE IT A SUBSTANTIAL BRUSH WIDTH 187 miro = new SPainter("Chromesthesia", 500,500); 188 miro.setVisible(false); 189 miro.setBrushWidth(7); 190 // ESTABLISH THE CHROMESTITIC PITCH CLASS OBJECTS 191 pitches = establishPitches(miro); 192 display(pitches); 193 } 194 195 private static String getInput() { 196 miro.setVisible(false); 197 String label = "Please enter a melody in ABC notation, or EXIT ... "; 198 String input = JOptionPane.showInputDialog(null, label); 199 String input2 = input; 200 miro.setVisible(true); 201 if (input == null) {input = ""; } 202 return input; 203 } 204 } 205