public override void ApplyState(
SceneModifier modifier,
RectangleF diagramBounds,
MarkerSeriesPointLayoutParameters markerParameters,
float progress)
{
modifier.Translate(-markerParameters.Bounds.Right * (1 - progress), 0);
}
public override void ApplyState(
SceneModifier modifier,
RectangleF diagramBounds,
MarkerSeriesPointLayoutParameters markerParameters,
float progress
)
{
RectangleF markerBounds = markerParameters.Bounds;
float markerCenterX = markerBounds.Left + markerBounds.Width / 2;
float markerCenterY = markerBounds.Top + markerBounds.Height / 2;
float startAngle = 360 - progress * 180;
float sweepAngle = 360 * progress;
float endAngle = startAngle + sweepAngle;
// To apply a fan animation we need to compute parameters of
// a marker's circumscribed сircle sector.
float circumscribedCircleRadius = (float)Math.Sqrt(
(markerBounds.Left - markerCenterX) * (markerBounds.Left - markerCenterX)
+ (markerBounds.Top - markerCenterY) * (markerBounds.Top - markerCenterY)
);
float circumscribedCircleSectorLeftBoundEndX =
markerCenterX + (float)Math.Cos(startAngle / 180 * Math.PI) * circumscribedCircleRadius;
float circumscribedCircleSectorLeftBoundEndY =
markerCenterY + (float)Math.Sin(startAngle / 180 * Math.PI) * circumscribedCircleRadius;
float circumscribedCircleSectorRightBoundEndX =
markerCenterX + (float)Math.Cos(endAngle / 180 * Math.PI) * circumscribedCircleRadius;
float circumscribedCircleSectorRightBoundEndY =
markerCenterY + (float)Math.Sin(endAngle / 180 * Math.PI) * circumscribedCircleRadius;
RectangleF circumscribedCircleBounds = new RectangleF(
markerCenterX - circumscribedCircleRadius,
markerCenterY - circumscribedCircleRadius,
2 * circumscribedCircleRadius,
2 * circumscribedCircleRadius
);
// Path representing a marker's circumscribed circle sector.
GraphicsPath path = new GraphicsPath();
path.AddLine(
markerCenterX,
markerCenterY,
circumscribedCircleSectorLeftBoundEndX,
circumscribedCircleSectorLeftBoundEndY
);
path.AddArc(
circumscribedCircleBounds,
startAngle,
sweepAngle
);
path.AddLine(
circumscribedCircleSectorRightBoundEndX,
circumscribedCircleSectorRightBoundEndY,
markerCenterX,
markerCenterY
);
modifier.Clip(path);
}
