melhorando a leitura de projetos no mmpCreator

creation.html

@@ -809,7 +809,9 @@
             CONSTANTS.TOTAL_KEYS - 1 - (note.key - CONSTANTS.START_NOTE);
           const y = keyIndex * CONSTANTS.NOTE_HEIGHT;
           const x = note.pos / CONSTANTS.TICKS_PER_PIXEL;
-          const width = note.len / CONSTANTS.TICKS_PER_PIXEL;
+          const lenTicks = note.len < 0 ? 12 : note.len;
+          const width = lenTicks / CONSTANTS.TICKS_PER_PIXEL;
+
 
           gridCtx.fillRect(x + 1, y + 1, width - 2, CONSTANTS.NOTE_HEIGHT - 2);
           gridCtx.strokeRect(