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 the examples: 22 * C, D, E, C D E c d e 23 * 24 * 25 */ 26 package chromesthesia2; 27 28 import java.util.Scanner; 29 import javax.swing.JOptionPane; 30 import javax.swing.SwingUtilities; 31 32 import chromesthesia1.Pitch; 33 import painter.SPainter; 34 35 public class Chromesthesia { 36 37 // INFRASTRUCTURE FOR THE PROGRAM -- LAUNCHING A "GRAPHICS" THREAD 38 39 public static void main(String[] args) { 40 SwingUtilities.invokeLater(new chromesthesia2.Chromesthesia.ThreadForGUI()); 41 } 42 43 private static class ThreadForGUI implements Runnable { 44 @Override 45 public void run() { 46 new chromesthesia2.Chromesthesia(); 47 } 48 } 49 50 public Chromesthesia() { 51 interpreter(); 52 } 53 54 // FEATURED VARIABLES 55 56 private static SPainter miro; 57 private static Pitch[] pitches; 58 59 // THE INTERPRETER 60 61 public static void interpreter() { 62 63 initialization(); // miro and pitches 64 65 while ( true ) { 66 String input = getInput(); 67 if ( input.equalsIgnoreCase("EXIT") ) { 68 break; 69 } else if (input.equalsIgnoreCase("AGAIN")) { 70 try { 71 playMelody(input,pitches); 72 } catch (Exception ex) { 73 showErrorMessage(ex.toString()); 74 } 75 76 } 77 else { 78 try { 79 playMelody(input,pitches); 80 } catch (Exception ex) { 81 showErrorMessage(ex.toString()); 82 } 83 } 84 } 85 86 cleanup(); // miro has to go 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 96 Pitch pitchLowC = new Pitch("C,",painter); 97 pitches[1] = pitchLowC; 98 99 Pitch pitchHighC = new Pitch("c",painter); 100 pitches[2] = pitchHighC; 101 102 Pitch pitchMiddleD = new Pitch("D",painter); 103 pitches[3] = pitchMiddleD; 104 105 Pitch pitchLowD = new Pitch("D,",painter); 106 pitches[4] = pitchLowD; 107 108 Pitch pitchHighD = new Pitch("d",painter); 109 pitches[5] = pitchHighD; 110 111 Pitch pitchMiddleE = new Pitch("E",painter); 112 pitches[6] = pitchMiddleE; 113 114 Pitch pitchLowE = new Pitch("E,",painter); 115 pitches[7] = pitchLowE; 116 117 Pitch pitchHighE = new Pitch("e",painter); 118 pitches[8] = pitchHighE; 119 120 Pitch pitchLowF = new Pitch("F,",painter); 121 pitches[9] = pitchLowF; 122 123 Pitch pitchMiddleF = new Pitch("F",painter); 124 pitches[10] = pitchMiddleF; 125 126 Pitch pitchHighF = new Pitch("f",painter); 127 pitches[11] = pitchHighF; 128 129 Pitch pitchLowG = new Pitch("G,",painter); 130 pitches[12] = pitchLowG; 131 132 Pitch pitchMiddleG = new Pitch("G",painter); 133 pitches[13] = pitchMiddleG; 134 135 Pitch pitchHighG = new Pitch("g",painter); 136 pitches[14] = pitchHighG; 137 138 Pitch pitchLowA = new Pitch("A,",painter); 139 pitches[15] = pitchLowA; 140 141 Pitch pitchMiddleA = new Pitch("A",painter); 142 pitches[16] = pitchMiddleA; 143 144 Pitch pitchHighA = new Pitch("a",painter); 145 pitches[17] = pitchHighA; 146 147 Pitch pitchLowB = new Pitch("B,",painter); 148 pitches[18] = pitchLowB; 149 150 Pitch pitchMiddleB = new Pitch("B",painter); 151 pitches[19] = pitchMiddleB; 152 153 Pitch pitchHighB = new Pitch("b",painter); 154 pitches[20] = pitchHighB; 155 return pitches; 156 } 157 158 private static Pitch find(String token, Pitch[] pitches) throws Exception { 159 for ( int i = 0; i < pitches.length; i = i + 1) { 160 Pitch pitch = pitches[i]; 161 if ( pitch.abcName().equals(token)) { 162 return pitch; 163 } 164 } 165 throw new Exception("### PITCH " + token + "NOT FOUND"); 166 } 167 168 private static void display(Pitch[] pitches) { 169 for (int i = 0; i < pitches.length; i = i + 1) { 170 System.out.println(pitches[i].toString()); 171 } 172 } 173 174 private static void playMelody(String input, Pitch[] pitches) throws Exception { 175 Scanner scanner = new Scanner(input); 176 while (scanner.hasNext()) { 177 String token = scanner.next(); 178 String pitchName; 179 String duration = ""; 180 if (token.indexOf(",") < 0) { 181 pitchName = token.substring(0,1); 182 duration = token.substring(1); 183 } else { 184 pitchName = token.substring(0,2); 185 duration = token.substring(2); 186 } 187 if (duration.length() == 0) { duration = "1"; } 188 Pitch pitch = find(pitchName,pitches); 189 pitch.play(duration); 190 } 191 } 192 193 // INITIALIZATION, CLEANUP, GETTING INPUT, ERROR MESSAGING 194 195 static private void showErrorMessage(String message) { 196 miro.setVisible(false); 197 JOptionPane.showMessageDialog(null, message); 198 } 199 200 private static void initialization() { 201 // ESTABLISH THE PAINTER AND GIVE IT A SUBSTANTIAL BRUSH WIDTH 202 miro = new SPainter("Chromesthesia",500,500); 203 miro.setVisible(false); 204 miro.setBrushWidth(7); 205 // ESTABLISH THE CHROMESTITIC PITCH CLASS OBJECTS 206 pitches = establishPitches(miro); 207 display(pitches); 208 } 209 210 private static String getInput() { 211 miro.setVisible(false); 212 String label = "Please enter a melody in ABC notation, or EXIT or AGAIN ... "; 213 String input = JOptionPane.showInputDialog(null, label); 214 miro.setVisible(true); 215 if (input == null) { input = ""; } 216 return input; 217 } 218 219 static private void cleanup() { 220 System.exit(0); 221 } 222 } 223