public MIDISequencer()
{
Keyboard = new MIDIKeyboard();
NoteManager = new NoteManager();
Stopwatch = Stopwatch.StartNew();
Stopwatch.Stop();
}
public override void Render(RenderTarget target, List<Note> notes, MIDIKeyboard keyboard)
{
foreach (Note n in notes)
{
if (n.Key >= GFXResources.NoteOffset && n.Key < GFXResources.NoteOffset + GFXResources.NoteCount && n.Length > 0 && n.Velocity > 0)
{
// Calculate pitchbend offset to give notes a sliding effect
float wheelOffset = (keyboard.Pitchwheel[n.Channel] - 8192) / 8192f * 2 * GFXResources.KeyWidth;
float bottom = n.Position + n.Length;
float left = n.Key * GFXResources.KeyWidth + wheelOffset - GFXResources.NoteOffset * GFXResources.KeyWidth;
GFXResources.NoteRoundRect.Left = left;
GFXResources.NoteRoundRect.Top = n.Position;
GFXResources.NoteRoundRect.Right = left + GFXResources.KeyWidth;
GFXResources.NoteRoundRect.Bottom = bottom;
float alpha = n.Velocity / 127f * (keyboard.ChannelVolume[n.Channel] / 127f);
alpha *= alpha; // Square the alpha so differences are more visible and scale quadratically
var gradientBrush = GFXResources.ChannelGradientBrushes[n.Channel];
gradientBrush.Opacity = alpha;
GFXResources.GradientPoint.X = GFXResources.NoteRoundRect.Left;
gradientBrush.StartPoint = GFXResources.GradientPoint;
GFXResources.GradientPoint.X = GFXResources.NoteRoundRect.Right;
gradientBrush.EndPoint = GFXResources.GradientPoint;
target.FillRoundedRectangle(GFXResources.ChannelGradientBrushes[n.Channel], GFXResources.NoteRoundRect);
}
}
}
public override void Render(RenderTarget target, List<Note> notes, MIDIKeyboard keyboard)
{
foreach (Note n in notes)
{
if (n.Key >= GFXResources.NoteOffset && n.Key < GFXResources.NoteOffset + GFXResources.NoteCount && n.Length > 0 && n.Velocity > 0)
{
// Calculate pitchbend offset to give notes a sliding effect
/* DISABLED FOR PERFORMANCE
float wheelOffset = (keyboard.Pitchwheel[n.Channel] - 8192) / 8192f * 2 * GFXResources.KeyWidth;
float bottom = n.Position + n.Length;
float left = n.Key * GFXResources.KeyWidth + (bottom >= GFXResources.KeyboardY ? wheelOffset : 0) - GFXResources.NoteOffset * GFXResources.KeyWidth;
*/
float left = n.Key * GFXResources.KeyWidth - GFXResources.NoteOffset * GFXResources.KeyWidth;
GFXResources.NoteRect.X = left;
GFXResources.NoteRect.Y = n.Position;
GFXResources.NoteRect.Width = GFXResources.KeyWidth;
GFXResources.NoteRect.Height = n.Length;
target.FillRectangle(GFXResources.ChannelBrushes[n.Channel], GFXResources.NoteRect);
}
}
}
public abstract void Render(RenderTarget target, List<Note> notes, MIDIKeyboard keyboard);
public MIDISequencer()
{
Keyboard = new MIDIKeyboard();
NoteManager = new NoteManager();
Stopwatch = Stopwatch.StartNew();
}
