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 chromesthesia1; 27 28 import java.util.Scanner; 29 import javax.swing.JOptionPane; 30 import javax.swing.SwingUtilities; 31 import painter.SPainter; 32 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 chromesthesia1.Chromesthesia.ThreadForGUI()); 40 } 41 42 private static class ThreadForGUI implements Runnable { 43 @Override 44 public void run() { 45 new chromesthesia1.Chromesthesia(); 46 } 47 } 48 49 public Chromesthesia() { 50 interpreter(); 51 } 52 53 // FEATURED VARIABLES 54 55 private static SPainter miro; 56 private static Pitch[] pitches; 57 58 // THE INTERPRETER 59 60 public static void interpreter() { 61 62 initialization(); // miro and pitches 63 64 while ( true ) { 65 String input = getInput(); 66 if ( input.equalsIgnoreCase("EXIT") ) { 67 break; 68 } else { 69 try { 70 playMelody(input,pitches); 71 } catch (Exception ex) { 72 showErrorMessage(ex.toString()); 73 } 74 } 75 } 76 77 cleanup(); // miro has to go 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 87 Pitch pitchLowC = new Pitch("C,",painter); 88 pitches[1] = pitchLowC; 89 90 Pitch pitchHighC = new Pitch("c",painter); 91 pitches[2] = pitchHighC; 92 93 Pitch pitchMiddleD = new Pitch("D",painter); 94 pitches[3] = pitchMiddleD; 95 96 Pitch pitchLowD = new Pitch("D,",painter); 97 pitches[4] = pitchLowD; 98 99 Pitch pitchHighD = new Pitch("d",painter); 100 pitches[5] = pitchHighD; 101 102 Pitch pitchMiddleE = new Pitch("E",painter); 103 pitches[6] = pitchMiddleE; 104 105 Pitch pitchLowE = new Pitch("E,",painter); 106 pitches[7] = pitchLowE; 107 108 Pitch pitchHighE = new Pitch("e",painter); 109 pitches[8] = pitchHighE; 110 111 Pitch pitchLowF = new Pitch("F,",painter); 112 pitches[9] = pitchLowF; 113 114 Pitch pitchMiddleF = new Pitch("F",painter); 115 pitches[10] = pitchMiddleF; 116 117 Pitch pitchHighF = new Pitch("f",painter); 118 pitches[11] = pitchHighF; 119 120 Pitch pitchLowG = new Pitch("G,",painter); 121 pitches[12] = pitchLowG; 122 123 Pitch pitchMiddleG = new Pitch("G",painter); 124 pitches[13] = pitchMiddleG; 125 126 Pitch pitchHighG = new Pitch("g",painter); 127 pitches[14] = pitchHighG; 128 129 Pitch pitchLowA = new Pitch("A,",painter); 130 pitches[15] = pitchLowA; 131 132 Pitch pitchMiddleA = new Pitch("A",painter); 133 pitches[16] = pitchMiddleA; 134 135 Pitch pitchHighA = new Pitch("a",painter); 136 pitches[17] = pitchHighA; 137 138 Pitch pitchLowB = new Pitch("B,",painter); 139 pitches[18] = pitchLowB; 140 141 Pitch pitchMiddleB = new Pitch("B",painter); 142 pitches[19] = pitchMiddleB; 143 144 Pitch pitchHighB = new Pitch("b",painter); 145 pitches[20] = pitchHighB; 146 return pitches; 147 } 148 149 private static Pitch find(String token, Pitch[] pitches) throws Exception { 150 for ( int i = 0; i < pitches.length; i = i + 1) { 151 Pitch pitch = pitches[i]; 152 if ( pitch.abcName().equals(token)) { 153 return pitch; 154 } 155 } 156 throw new Exception("### PITCH " + token + "NOT FOUND"); 157 } 158 159 private static void display(Pitch[] pitches) { 160 for (int i = 0; i < pitches.length; i = i + 1) { 161 System.out.println(pitches[i].toString()); 162 } 163 } 164 165 private static void playMelody(String input, Pitch[] pitches) throws Exception { 166 Scanner scanner = new Scanner(input); 167 while (scanner.hasNext()) { 168 String token = scanner.next(); 169 Pitch pitch = find(token,pitches); 170 pitch.play("1"); 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