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, C D E c d e 23 * 24 * Google ABC music representation if you would like to know more about it. 25 */ 26 27 package chromesthesia2; 28 29 import java.util.Scanner; 30 import javax.swing.JOptionPane; 31 import javax.swing.SwingUtilities; 32 import painter.SPainter; 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 chromesthesia2.Chromesthesia.ThreadForGUI()); 40 } 41 42 public static class ThreadForGUI implements Runnable { 43 44 @Override 45 public void run() { 46 new chromesthesia2.Chromesthesia(); 47 } 48 } 49 50 public Chromesthesia() { 51 52 interpreter(); 53 } 54 55 // FEATURED VARIABLES 56 57 private static SPainter miro; 58 private static Pitch[] pitches; 59 60 // THE INTERPRETER 61 62 public static void interpreter() { 63 64 initialization(); // miro and pitches 65 66 String last = ""; 67 68 while ( true ) { 69 String input = getInput(); 70 if ( input.equalsIgnoreCase("EXIT")) { 71 break; 72 } else if (input.equalsIgnoreCase("AGAIN")) { 73 if (last != " ") { 74 try { 75 playMelody(last, pitches); 76 } catch (Exception ex) { 77 showErrorMessage(ex.toString()); 78 } 79 } else { 80 showErrorMessage("No previous melody"); 81 } 82 } else last = input; 83 try { 84 playMelody(last, pitches); 85 last = input; 86 } catch (Exception ex) { 87 showErrorMessage(ex.toString()); 88 } 89 } 90 cleanup(); // miro has to go 91 } 92 93 private static Pitch[] establishPitches(SPainter painter) { 94 Pitch[] pitches = new Pitch[21]; 95 Pitch pitchMiddleC = new Pitch("C", painter); 96 pitches[0] = pitchMiddleC; 97 Pitch pitchLowC = new Pitch("C,", painter); 98 pitches[1] = pitchLowC; 99 Pitch pitchHighC = new Pitch("c", painter); 100 pitches[2] = pitchHighC; 101 Pitch pitchMiddleD = new Pitch("D", painter); 102 pitches[3] = pitchMiddleD; 103 Pitch pitchLowD = new Pitch("D,", painter); 104 pitches[4] = pitchLowD; 105 Pitch pitchHighD = new Pitch("d", painter); 106 pitches[5] = pitchHighD; 107 Pitch pitchMiddleE = new Pitch("E", painter); 108 pitches[6] = pitchMiddleE; 109 Pitch pitchLowE = new Pitch("E,", painter); 110 pitches[7] = pitchLowE; 111 Pitch pitchHighE = new Pitch("e", painter); 112 pitches[8] = pitchHighE; 113 Pitch pitchMiddleF = new Pitch("F", painter); 114 pitches[9] = pitchMiddleF; 115 Pitch pitchLowF = new Pitch("F,", painter); 116 pitches[10] = pitchLowF; 117 Pitch pitchHighF = new Pitch("f", painter); 118 pitches[11] = pitchHighF; 119 Pitch pitchMiddleG = new Pitch("G", painter); 120 pitches[12] = pitchMiddleG; 121 Pitch pitchLowG = new Pitch("G,", painter); 122 pitches[13] = pitchLowG; 123 Pitch pitchHighG = new Pitch("g", painter); 124 pitches[14] = pitchHighG; 125 Pitch pitchMiddleA = new Pitch("A", painter); 126 pitches[15] = pitchMiddleA; 127 Pitch pitchLowA = new Pitch("A,", painter); 128 pitches[16] = pitchLowA; 129 Pitch pitchHighA = new Pitch("a", painter); 130 pitches[17] = pitchHighA; 131 Pitch pitchMiddleB = new Pitch("B", painter); 132 pitches[18] = pitchMiddleB; 133 Pitch pitchLowB = new Pitch("B,", painter); 134 pitches[19] = pitchLowB; 135 Pitch pitchHighB = new Pitch("b", painter); 136 pitches[20] = pitchHighB; 137 return pitches; 138 } 139 140 private static Pitch find(String token, Pitch[] pitches) throws Exception { 141 for ( int i = 0; i < pitches.length; i = i + 1 ) { 142 Pitch pitch = pitches[i]; 143 if ( pitch.abcName().equals(token)) { 144 return pitch; 145 } 146 } 147 throw new Exception("### PITCH " + token + " NOT FOUND"); 148 } 149 150 private static void display(Pitch[] pitches) { 151 for ( int i = 0; i < pitches.length; i = i + 1 ) { 152 System.out.println(pitches[i].toString()); 153 } 154 } 155 156 private static void playMelody(String input, Pitch[] pitches) throws Exception { 157 Scanner scanner = new Scanner(input); 158 while ( scanner.hasNext() ) { 159 String token = scanner.next(); 160 String pitchName; 161 String duration = ""; 162 if (token.indexOf(",") < 0) { 163 pitchName = token.substring(0,1); 164 duration = token.substring(1); 165 } else { 166 pitchName = token.substring(0,2); 167 duration = token.substring(2); 168 } 169 if (duration.length() == 0) { duration = "1";} 170 Pitch pitch = find(pitchName,pitches); 171 pitch.play(duration); 172 } 173 } 174 175 // INITIALIZATION, CLEAN UP, GETTING INPUT, ERROR MESSAGING 176 177 static private void showErrorMessage(String message) { 178 miro.setVisible(false); 179 JOptionPane.showMessageDialog(null,message); 180 } 181 182 static private void initialization() { 183 // ESTABLISH THE PAINTER AND GIVE IT A SUBSTANTIAL BRUSH WIDTH 184 miro = new SPainter("Chromesthia", 500, 500); 185 miro.setVisible(false); 186 miro.setBrushWidth(7); 187 // ESTABLISH THE CHROMESTITIC PITCH CLASS OBJECTS 188 pitches = establishPitches(miro); 189 display(pitches); 190 } 191 192 private static String getInput() { 193 miro.setVisible(false); 194 String label = "Please enter a melody in ABC notation, or EXIT ... "; 195 String input = JOptionPane.showInputDialog(null, label); 196 miro.setVisible(true); 197 if ( input == null ) { input = ""; } 198 return input; 199 } 200 201 static private void cleanup() { 202 System.exit(0); 203 } 204 205 } 206 207