GeneticMIDI.Generators.GeneticGenerator.Generate C# (CSharp) Method

        public MelodySequence Generate()
        {
            NoteGene baseGene = new NoteGene(GPGeneType.Function);
            baseGene.Function = NoteGene.FunctionTypes.Concatenation;
            GPCustomTree tree = new GPCustomTree(baseGene);
            if (base_seq != null)
            {
                tree.Generate(base_seq.ToArray());
                tree.Mutate();
                tree.Crossover(tree);

                int length = base_seq.Length;
                int depth = (int)Math.Ceiling(Math.Log(length, 2));
                GPCustomTree.MaxInitialLevel = depth - 2;
                GPCustomTree.MaxLevel = depth + 5;
            }
            var selection = new EliteSelection();
            pop = new Population(30, tree, fitnessFunction, selection);

            pop.AutoShuffling = true;
            pop.CrossoverRate = 0.9;
            pop.MutationRate = 0.1;

            int percentage = MaxGenerations / 100;

            for (int i = 0; i < MaxGenerations; i++)
            {
                if(i>percentage)
                {
                    if (OnPercentage != null)
                        OnPercentage(this, i, pop.FitnessAvg);
                    percentage += MaxGenerations / 100;
                }

                pop.RunEpoch();
                if ((int)(i) % 100 == 0)
                    Console.WriteLine(i / (float)MaxGenerations * 100 + "% : " + pop.FitnessAvg);
            }

            GPCustomTree best = pop.BestChromosome as GPCustomTree;
            var notes = best.GenerateNotes();
            return new MelodySequence(notes);
        }

        static void Test8()
        {
            MusicPlayer player = new MusicPlayer();

            Console.WriteLine("Hidden Markov Model");
            var m1 = GetMelodySequence(@"test\other\frere.mid");
            var m2 = GetMelodySequence(@"test\other\babaa.mid");
            var m3 = GetMelodySequence(@"test\other\twinkle.mid");

            var m4 = GetMelodySequence(@"test\hagrid.mid");
            var m5 = GetMelodySequence(@"test\harry.mid");
            var m6 = GetMelodySequence(@"test\harry2.mid");
            MarkovGenerator markov = new MarkovGenerator(new MelodySequence[] { m6 });
            while (true)
            {
                Composition comp = new Composition();

                GeneticGenerator gen = new GeneticGenerator(new MetricSimilarity(m6, new IMetric[] { new Rhythm(), new RhythmicBigram(), new RhythmicInterval() }));
                var notes2 = gen.Generate();
                Track t2 = new Track((PatchNames)0, 10);
                MelodySequence s = new MelodySequence();
                s.AddPause((int)Durations.wn * 10);
                foreach (Note n in notes2.Notes)
                {
                    if (n.Pitch <= 0)
                        n.Pitch = 0;
                    else if (n.Pitch > 48)
                        n.Pitch = 40;
                    else if (n.Pitch > 70)
                        n.Pitch = 35;
                    else
                    {
                        n.Pitch = 49;
                        n.Duration *= 4;
                        n.Velocity = 50;
                        s.AddPause(n.Duration * 2);
                    }
                    s.AddNote(n);
                }
                t2.AddSequence(s);

                var notes3 = markov.Generate().Notes as Note[];

                MelodySequence baseseq = new MelodySequence();

                int max_dur = 0;
                int max_index = 0;
                for (int i = (int)(notes3.Length * 0.7f); i < notes3.Length; i++)
                {
                    if (notes3[i].Duration > max_dur)
                    {
                        max_dur = notes3[i].Duration;
                        max_index = i;
                    }
                }
                Note last_note = null;
                for (int i = 0; i < max_index; i++)
                {
                    last_note = notes3[i];
                    baseseq.AddNote(last_note);
                }
                baseseq.AddNote(new Note(last_note.Pitch - 12, last_note.Duration));
                baseseq.AddNote(new Note(last_note.Pitch - 24, last_note.Duration * 2));
                baseseq.AddPause(last_note.Duration * 32);

                Track t = new Track(PatchNames.Vibraphone, 1);

                var b1 = baseseq.Clone() as MelodySequence;
                var b2 = baseseq.Clone() as MelodySequence;
                var b3 = baseseq.Clone() as MelodySequence;
                b1.Transpose(12);
                b2.Transpose(6);
                b3.Transpose(-12);
                t.AddSequence(baseseq);
                t.AddSequence(b1);
                t.AddSequence(b2);
                t.AddSequence(b3);

                comp.Add(t);
                comp.Add(t2);
                Console.WriteLine("Press enter key to listen");
                Console.ReadLine();
                player.Play(comp);
            }
        }