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