public override void Draw(Graphics canvas, DistortionHelper distorter, IImageToViewportTransformer transformer, bool selected, long currentTimestamp)
{
double opacityFactor = infosFading.GetOpacityFactor(currentTimestamp);
if (tracking)
{
opacityFactor = 1.0;
}
if (opacityFactor <= 0)
{
return;
}
int iAlpha = (int)(opacityFactor * 255);
Point c = transformer.Transform(points["0"]);
using (Pen p = styleHelper.GetPen(iAlpha))
using (SolidBrush b = styleHelper.GetBrush((int)(opacityFactor * defaultBackgroundAlpha)))
{
canvas.DrawLine(p, c.X - defaultRadius, c.Y, c.X + defaultRadius, c.Y);
canvas.DrawLine(p, c.X, c.Y - defaultRadius, c.X, c.Y + defaultRadius);
canvas.FillEllipse(b, c.Box(defaultRadius + 1));
}
if (trackExtraData != TrackExtraData.None)
{
string text = GetExtraDataText(infosFading.ReferenceTimestamp);
miniLabel.SetText(text);
miniLabel.Draw(canvas, transformer, opacityFactor);
}
}
public override void Draw(Graphics canvas, DistortionHelper distorter, IImageToViewportTransformer transformer, bool selected, long currentTimestamp)
{
double opacityFactor = infosFading.GetOpacityTrackable(trackingTimestamps, currentTimestamp);
if (opacityFactor <= 0)
{
return;
}
Point start = transformer.Transform(points["a"]);
Point end = transformer.Transform(points["b"]);
using (Pen penEdges = styleHelper.GetPen(opacityFactor, transformer.Scale))
using (Brush brush = styleHelper.GetBrush(opacityFactor))
{
if (distorter != null && distorter.Initialized)
{
DrawDistorted(canvas, distorter, transformer, penEdges, brush, start, end);
}
else
{
DrawStraight(canvas, transformer, penEdges, brush, start, end);
}
}
if (trackExtraData != TrackExtraData.None)
{
string text = GetExtraDataText();
miniLabel.SetText(text);
miniLabel.Draw(canvas, transformer, opacityFactor);
}
}
public override void Draw(Graphics canvas, DistortionHelper distorter, IImageToViewportTransformer transformer, bool selected, long currentTimestamp)
{
double opacityFactor = infosFading.GetOpacityFactor(currentTimestamp);
if (opacityFactor <= 0)
{
return;
}
int alpha = (int)(opacityFactor * 255);
using (Pen p = styleHelper.GetPen(alpha, transformer.Scale))
{
if (styleHelper.PenShape == PenShape.Dash)
{
p.DashStyle = DashStyle.Dash;
}
// The center of the original circle is still the correct center even in perspective.
PointF circleCenter = transformer.Transform(center);
DrawCenter(canvas, p, circleCenter.ToPoint());
if (CalibrationHelper.CalibratorType == CalibratorType.Plane)
{
// Draw the circle in perspective.
PointF ellipseCenter = transformer.Transform(ellipseInImage.Center);
float semiMinorAxis = transformer.Transform((int)ellipseInImage.SemiMinorAxis);
float semiMajorAxis = transformer.Transform((int)ellipseInImage.SemiMajorAxis);
Ellipse ellipse = new Ellipse(ellipseCenter, semiMajorAxis, semiMinorAxis, ellipseInImage.Rotation);
RectangleF rect = new RectangleF(-ellipse.SemiMajorAxis, -ellipse.SemiMinorAxis, ellipse.SemiMajorAxis * 2, ellipse.SemiMinorAxis * 2);
float angle = (float)(ellipse.Rotation * MathHelper.RadiansToDegrees);
canvas.TranslateTransform(ellipse.Center.X, ellipse.Center.Y);
canvas.RotateTransform(angle);
canvas.DrawEllipse(p, rect);
canvas.RotateTransform(-angle);
canvas.TranslateTransform(-ellipse.Center.X, -ellipse.Center.Y);
}
else
{
Rectangle boundingBox = transformer.Transform(center.Box(radius));
canvas.DrawEllipse(p, boundingBox);
}
if (trackExtraData != TrackExtraData.None)
{
// Draw lines from the center to the periphery of the circle to show the radius or diameter.
if (trackExtraData == TrackExtraData.Radius)
{
PointF radiusRight = transformer.Transform(radiusRightInImage);
canvas.DrawLine(p, circleCenter, radiusRight);
}
else if (trackExtraData == TrackExtraData.Diameter)
{
PointF radiusLeft = transformer.Transform(radiusLeftInImage);
PointF radiusRight = transformer.Transform(radiusRightInImage);
canvas.DrawLine(p, radiusLeft, radiusRight);
}
string text = GetExtraDataText(infosFading.ReferenceTimestamp);
miniLabel.SetText(text);
miniLabel.Draw(canvas, transformer, opacityFactor);
}
}
}