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 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 painter.SPainter; 29 import javax.swing.JOptionPane; 30 import javax.swing.SwingUtilities; 31 import java.util.Scanner; 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 48 public Chromesthesia() { 49 interpreter(); 50 } 51 52 // FEATURED VARIABLES 53 54 private static SPainter miro; 55 private static Pitch[] pitches; 56 57 // THE INTERPRETER 58 59 public static void interpreter() { 60 61 initialization(); // miro and pitches 62 String previousInput = ""; 63 String currentInput = ""; 64 while ( true ) { 65 String input = getInput(); 66 if ( input.equalsIgnoreCase("EXIT") ) { 67 break; 68 } else if( input.equalsIgnoreCase("AGAIN") ) { 69 previousInput = currentInput; 70 try { 71 playMelody(currentInput, pitches); 72 } catch (Exception ex) { 73 showErrorMessage(ex.toString()); 74 } 75 } else { 76 previousInput = currentInput; 77 currentInput = input; 78 try { 79 playMelody(currentInput,pitches); 80 } catch (Exception ex) { 81 showErrorMessage(ex.toString()); 82 } 83 } 84 } 85 86 cleanup(); // miro has to go 87 88 } 89 90 // METHODS PERTAINING TO THE CHROMESTHETIC PITCHES 91 92 private static Pitch[] establishPitches(SPainter painter) { 93 Pitch[] pitches = new Pitch[21]; 94 Pitch pitchMiddleC = new Pitch("C",painter); 95 pitches[0] = pitchMiddleC; 96 Pitch pitchLowC = new Pitch("C,",painter); 97 pitches[1] = pitchLowC; 98 Pitch pitchHighC = new Pitch("c",painter); 99 pitches[2] = pitchHighC; 100 Pitch pitchMiddleD = new Pitch("D",painter); 101 pitches[3] = pitchMiddleD; 102 Pitch pitchLowD = new Pitch("D,",painter); 103 pitches[4] = pitchLowD; 104 Pitch pitchHighD = new Pitch("d",painter); 105 pitches[5] = pitchHighD; 106 Pitch pitchMiddleE = new Pitch("E",painter); 107 pitches[6] = pitchMiddleE; 108 Pitch pitchLowE = new Pitch("E,",painter); 109 pitches[7] = pitchLowE; 110 Pitch pitchHighE = new Pitch("e",painter); 111 pitches[8] = pitchHighE; 112 Pitch pitchMiddleF = new Pitch("F",painter); 113 pitches[9] = pitchMiddleF; 114 Pitch pitchLowF = new Pitch("F,",painter); 115 pitches[10] = pitchLowF; 116 Pitch pitchHighF = new Pitch("f",painter); 117 pitches[11] = pitchHighF; 118 Pitch pitchMiddleG = new Pitch("G",painter); 119 pitches[12] = pitchMiddleG; 120 Pitch pitchLowG = new Pitch("G,",painter); 121 pitches[13] = pitchLowG; 122 Pitch pitchHighG = new Pitch("g",painter); 123 pitches[14] = pitchHighG; 124 Pitch pitchMiddleA = new Pitch("A",painter); 125 pitches[15] = pitchMiddleA; 126 Pitch pitchLowA = new Pitch("A,",painter); 127 pitches[16] = pitchLowA; 128 Pitch pitchHighA = new Pitch("a",painter); 129 pitches[17] = pitchHighA; 130 Pitch pitchMiddleB = new Pitch("B",painter); 131 pitches[18] = pitchMiddleB; 132 Pitch pitchLowB = new Pitch("B,",painter); 133 pitches[19] = pitchLowB; 134 Pitch pitchHighB = new Pitch("b",painter); 135 pitches[20] = pitchHighB; 136 return pitches; 137 } 138 139 private static Pitch find(String token, Pitch[] pitches) throws Exception { 140 for ( int i = 0; i < pitches.length; i = i + 1) { 141 Pitch pitch = pitches[i]; 142 if ( pitch.abcName().equals(token) ) { 143 return pitch; 144 } 145 } 146 throw new Exception("### PITCH " + token + " NOT FOUND"); 147 } 148 149 private static void display(Pitch[] pitches) { 150 for ( int i = 0; i < pitches.length; i = i + 1) { 151 System.out.println(pitches[1].toString()); 152 } 153 } 154 155 private static void playMelody(String input, Pitch[] pitches) throws Exception { 156 Scanner scanner = new Scanner(input); 157 while ( scanner.hasNext() ) { 158 String token = scanner.next(); 159 String pitchName; 160 String duration = ""; 161 if ( token.indexOf(",") < 0 ) { 162 pitchName = token.substring(0,1); 163 duration = token.substring(1); 164 } else { 165 pitchName = token.substring(0,2); 166 duration = token.substring(2); 167 } 168 if ( duration.length() == 0 ) { duration = "1"; } 169 Pitch pitch = find(pitchName,pitches); 170 pitch.play(duration); 171 } 172 } 173 174 // INITIALIZATION, CLEANUP, GETTING INPUT, ERROR MESSAGING 175 176 static private void showErrorMessage(String message) { 177 miro.setVisible(false); 178 JOptionPane.showMessageDialog(null, message); 179 } 180 181 private static void initialization() { 182 // ESTABLISH THE PAINTER AND GIVE IT A SUBSTANTIAL BRUSH WIDTH 183 miro = new SPainter("Chromesthesia",500,500); 184 miro.setVisible(false); 185 miro.setBrushWidth(7); 186 // ESTABLISH THE CHROMESTITIC PITCH CLASS OBJECTS 187 pitches = establishPitches(miro); 188 display(pitches); 189 } 190 191 private static String getInput() { 192 miro.setVisible(false); 193 String label = "Please enter a melody in ABC notation, or EXIT... "; 194 String input = JOptionPane.showInputDialog(null, label); 195 miro.setVisible(true); 196 if (input == null) { input = ""; } 197 return input; 198 } 199 200 static private void cleanup() { 201 System.exit(0); 202 } 203 204 } 205