private void RenderAvatars(Graphics context)
{
var clientSize = context.Bounds;
var yCenter = clientSize.Height * Definitions.BaseLineYPosition;
var diameter = Definitions.AvatarCircleDiameter;
var radius = Definitions.AvatarCircleRadius;
var fill = _avatarFill;
var stroke = _avatarBorderStroke;
var xStart = NotesLayerUtils.GetAvatarXPosition(clientSize, NotePosition.Min) - diameter;
var xEnd = NotesLayerUtils.GetAvatarXPosition(clientSize, NotePosition.Max) + diameter;
context.DrawLine(stroke, xStart, yCenter, xEnd, yCenter);
foreach (var position in Definitions.AvatarCenterXEndPositions)
{
var xCenter = clientSize.Width * position;
context.FillCircle(fill, xCenter, yCenter, radius);
context.DrawCircle(stroke, xCenter, yCenter, radius);
}
}
protected override void BuildVertices()
{
var startTiming = StartNote.Temporary.HitTiming.TotalSeconds;
var now = Now;
var context = RenderContext;
var xs = new float[JointCount];
var ys = new float[JointCount];
var rs = new float[JointCount];
var x2 = NotesLayerUtils.GetNoteXPosition(context, now, EndNote, true, true);
var y2 = NotesLayerUtils.GetNoteYPosition(context, now, EndNote, true, true);
var r2 = NotesLayerUtils.GetNoteRadius(now, EndNote);
float x1, y1, r1;
if (now <= startTiming)
{
x1 = NotesLayerUtils.GetNoteXPosition(context, now, StartNote, true, true);
y1 = NotesLayerUtils.GetNoteYPosition(context, now, StartNote, true, true);
r1 = NotesLayerUtils.GetNoteRadius(now, StartNote);
}
else
{
var startPosition = StartNote.Basic.FinishPosition;
var endPosition = EndNote.Basic.FinishPosition;
var tx1 = NotesLayerUtils.GetAvatarXPosition(context.Bounds, startPosition);
var tx2 = NotesLayerUtils.GetAvatarXPosition(context.Bounds, endPosition);
var endTiming = EndNote.Temporary.HitTiming.TotalSeconds;
var tr = (float)(now - startTiming) / (float)(endTiming - startTiming);
x1 = tx1 * (1 - tr) + tx2 * tr;
y1 = NotesLayerUtils.GetAvatarYPosition(context.Bounds);
r1 = Definitions.AvatarCircleRadius;
}
for (var i = 0; i < JointCount; ++i)
{
var t = (float)i / (JointCount - 1);
xs[i] = MathHelper.Lerp(x1, x2, t);
ys[i] = MathHelper.Lerp(y1, y2, t);
rs[i] = MathHelper.Lerp(r1, r2, t);
}
var vertices = Vertices;
for (var i = 0; i < JointCount; ++i)
{
var x = xs[i];
var y = ys[i];
var r = rs[i];
float ydif, xdif;
if (i == JointCount - 1)
{
ydif = y - ys[i - 1];
xdif = x - xs[i - 1];
}
else
{
ydif = ys[i + 1] - y;
xdif = xs[i + 1] - x;
}
var rad = (float)Math.Atan2(ydif, xdif);
var cos = (float)Math.Cos(rad);
var sin = (float)Math.Sin(rad);
var vertex1 = new Vector2(x - r * sin, y - r * cos);
var vertex2 = new Vector2(x + r * sin, y + r * cos);
vertices[i * 2] = vertex1;
vertices[i * 2 + 1] = vertex2;
}
}