1 /* This program interprets melodic lines given in ABC notation as a 2 * chromesthete might. 3 * 4 * A Pitch class will be defined and will take center stage in the 5 * processing. 6 * 7 * Interpreting a melody in ABC notation will amount to flashing 8 * colored rectangles for prescribed durations, while sounding 9 * the pitch! The color of the rectangle will correspond to pitch 10 * class. The duration will correspond to the duration of the note. 11 * 12 * For this first version of the program, the duration will be held 13 * constant at 1 beat. 14 * 15 * Three sorts of images will appear on the screen, the chromesthetic 16 * output box, a text input box, and an error message box. Simplicity 17 * of design is rendered by permitting only one box to be on the screen 18 * at a time. 19 * 20 * ABC represents notes in a manner consistent with these examples: 21 * C, D, E, C D E c d e 22 * 23 * Google ABC music representation if you would like to know more about it. 24 */ 25 26 package chromesthesia2; 27 28 import java.util.Scanner; 29 import javax.swing.JOptionPane; 30 import javax.swing.SwingUtilities; 31 import painter.SPainter; 32 33 public class Chromesthesia { 34 35 //INFRASTRUCTURE FOR THE PROGRAM -- LAUNCHING A "GRAPHICS" THREAD 36 37 public static void main(String[] args) { 38 SwingUtilities.invokeLater(new ThreadForGUI()); 39 } 40 41 private static class ThreadForGUI implements Runnable { 42 @Override 43 public void run() { 44 new Chromesthesia(); 45 } 46 } 47 public Chromesthesia() { 48 interpreter(); 49 } 50 //FEATURED VARIABLES 51 52 private static SPainter miro; 53 private static Pitch[] pitches; 54 55 // THE INTERPRETER 56 57 public static void interpreter() { 58 59 initialization(); // miro and pitches 60 61 while ( true ) { 62 String input = getInput(); 63 if ( input.equalsIgnoreCase("EXIT") ) { 64 break; 65 } else if (input.equalsIgnoreCase("AGAIN")) { 66 System.out.println("Chromesthesia!"); 67 } else { 68 try { 69 playMelody(input,pitches); 70 } catch (Exception ex) { 71 showErrorMessage(ex.toString()); 72 } 73 } 74 } 75 76 cleanup(); // miro has to go 77 78 } 79 80 //METHODS PERTAINING TO THE CHROMESTHETIC PITCHES 81 82 private static Pitch[] establishPitches(SPainter painter) { 83 Pitch[] pitches = new Pitch[21]; 84 Pitch pitchMiddleC = new Pitch("C",painter); 85 pitches[0] = pitchMiddleC; 86 Pitch pitchLowC = new Pitch("C,",painter); 87 pitches[1] = pitchLowC; 88 Pitch pitchHighC = new Pitch("c",painter); 89 pitches[2] = pitchHighC; 90 Pitch pitchMiddleD = new Pitch("D",painter); 91 pitches[3] = pitchMiddleD; 92 Pitch pitchLowD = new Pitch("D,",painter); 93 pitches[4] = pitchLowD; 94 Pitch pitchHighD = new Pitch("d",painter); 95 pitches[5] = pitchHighD; 96 Pitch pitchMiddleE = new Pitch("E",painter); 97 pitches[6] = pitchMiddleE; 98 Pitch pitchLowE = new Pitch("E,",painter); 99 pitches[7] = pitchLowE; 100 Pitch pitchHighE = new Pitch("e",painter); 101 pitches[8] = pitchHighE; 102 Pitch pitchMiddleF = new Pitch("F",painter); 103 pitches[9] = pitchMiddleF; 104 Pitch pitchLowF = new Pitch("F,",painter); 105 pitches[10] = pitchLowF; 106 Pitch pitchHighF = new Pitch("f",painter); 107 pitches[11] = pitchHighF; 108 Pitch pitchMiddleG = new Pitch("G",painter); 109 pitches[12] = pitchMiddleG; 110 Pitch pitchLowG = new Pitch("G,",painter); 111 pitches[13] = pitchLowG; 112 Pitch pitchHighG = new Pitch("g",painter); 113 pitches[14] = pitchHighG; 114 Pitch pitchMiddleA = new Pitch("A",painter); 115 pitches[15] = pitchMiddleA; 116 Pitch pitchLowA = new Pitch("A,",painter); 117 pitches[16] = pitchLowA; 118 Pitch pitchHighA = new Pitch("a",painter); 119 pitches[17] = pitchHighA; 120 Pitch pitchMiddleB = new Pitch("B",painter); 121 pitches[18] = pitchMiddleB; 122 Pitch pitchLowB = new Pitch("B,",painter); 123 pitches[19] = pitchLowB; 124 Pitch pitchHighB = new Pitch("b",painter); 125 pitches[20] = pitchHighB; 126 127 return pitches; 128 } 129 130 private static Pitch find(String token, Pitch[] pitches) throws Exception { 131 for ( int i = 0; i < pitches.length; i = i + 1 ) { 132 Pitch pitch = pitches[i]; 133 if ( pitch.abcName().equals(token) ) { 134 return pitch; 135 } 136 } 137 throw new Exception("### PITCH " + token + " NOT FOUND"); 138 } 139 140 private static void display(Pitch[] pitches) { 141 for ( int i = 0; i < pitches.length; i = i + 1 ) { 142 System.out.println(pitches[i].toString()); 143 } 144 } 145 146 private static void playMelody(String input, Pitch[] pitches) throws Exception { 147 Scanner scanner = new Scanner(input); 148 while ( scanner.hasNext() ) { 149 String token = scanner.next(); 150 String pitchName; 151 String duration = ""; 152 if ( token.indexOf(",") < 0 ) { 153 pitchName = token.substring(0, 1); 154 duration = token.substring(1); 155 } else { 156 pitchName = token.substring(0,2); 157 duration = token.substring(2); 158 } 159 if ( duration.length() == 0 ) { duration = "1"; } 160 161 Pitch pitch = find(pitchName,pitches); 162 pitch.play(duration); 163 } 164 } 165 166 // INITIALIZATION, CLEANUP, GETTING INPUT, ERROR MESSAGING 167 static private void showErrorMessage(String message) { 168 miro.setVisible(false); 169 JOptionPane.showMessageDialog(null, message); 170 } 171 172 private static void initialization() { 173 //ESTABLISH THE PAINTER AND GIVE IT A SUBSTANTIAL BRUSH WIDTH 174 miro = new SPainter("Chromesthesia",500,500); 175 miro.setVisible(false); 176 miro.setBrushWidth(7); 177 //ESTABLISH THE CHROMESTITIC PITCH CLASS OBJECTS 178 pitches = establishPitches(miro); 179 display(pitches); 180 } 181 182 private static String getInput() { 183 miro.setVisible(false); 184 String label = "Please enter a melody in ABC notation, or EXIT ... "; 185 String input = JOptionPane.showInputDialog(null,label); 186 miro.setVisible(true); 187 if ( input == null ) { input = " "; } 188 return input; 189 } 190 191 static private void cleanup() { 192 System.exit(0); 193 } 194 195 } 196 197 198 199 200 201 202