private void DrawAngleText(Graphics canvas, double opacity, IImageToViewportTransformer transformer, AngleHelper angle, SolidBrush brushFill)
{
//-------------------------------------------------
// FIXME: function duplicated. Move to AngleHelper.
// This version is already more generic.
//-------------------------------------------------
double value = CalibrationHelper.ConvertAngleFromDegrees(angle.CalibratedAngle.Sweep);
if (value < 0)
{
value = -value;
}
string label = "";
if (angle.Tenth)
{
label = String.Format("{0:0.0} {1}", value, CalibrationHelper.GetAngleAbbreviation());
}
else
{
label = String.Format("{0} {1}", (int)Math.Round(value), CalibrationHelper.GetAngleAbbreviation());
}
if (!string.IsNullOrEmpty(angle.Symbol))
{
label = string.Format("{0} = {1}", angle.Symbol, label);
}
SolidBrush fontBrush = styleHelper.GetForegroundBrush((int)(opacity * 255));
Font tempFont = styleHelper.GetFont(Math.Max((float)transformer.Scale, 1.0F));
SizeF labelSize = canvas.MeasureString(label, tempFont);
// Background
float shiftx = (float)(transformer.Scale * angle.TextPosition.X);
float shifty = (float)(transformer.Scale * angle.TextPosition.Y);
Point origin = transformer.Transform(angle.Origin);
PointF textOrigin = new PointF(shiftx + origin.X - labelSize.Width / 2, shifty + origin.Y - labelSize.Height / 2);
RectangleF backRectangle = new RectangleF(textOrigin, labelSize);
RoundedRectangle.Draw(canvas, backRectangle, brushFill, tempFont.Height / 4, false, false, null);
// Text
canvas.DrawString(label, tempFont, fontBrush, backRectangle.Location);
tempFont.Dispose();
fontBrush.Dispose();
}
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;
}
ComputeValues(transformer);
Point pointO = transformer.Transform(points["o"]);
Point pointA = transformer.Transform(points["a"]);
Point pointB = transformer.Transform(points["b"]);
Rectangle boundingBox = transformer.Transform(angleHelper.BoundingBox);
if (boundingBox.Size == Size.Empty)
{
return;
}
using (Pen penEdges = styleHelper.GetBackgroundPen((int)(opacityFactor * 255)))
using (SolidBrush brushEdges = styleHelper.GetBackgroundBrush((int)(opacityFactor * 255)))
using (SolidBrush brushFill = styleHelper.GetBackgroundBrush((int)(opacityFactor * defaultBackgroundAlpha)))
{
// Disk section
canvas.FillPie(brushFill, boundingBox, (float)angleHelper.Angle.Start, (float)angleHelper.Angle.Sweep);
canvas.DrawPie(penEdges, boundingBox, (float)angleHelper.Angle.Start, (float)angleHelper.Angle.Sweep);
// Edges
canvas.DrawLine(penEdges, pointO, pointA);
canvas.DrawLine(penEdges, pointO, pointB);
// Handlers
canvas.DrawEllipse(penEdges, pointO.Box(3));
canvas.FillEllipse(brushEdges, pointA.Box(3));
canvas.FillEllipse(brushEdges, pointB.Box(3));
SolidBrush fontBrush = styleHelper.GetForegroundBrush((int)(opacityFactor * 255));
float angle = CalibrationHelper.ConvertAngleFromDegrees(angleHelper.CalibratedAngle.Sweep);
string label = "";
if (CalibrationHelper.AngleUnit == AngleUnit.Degree)
{
label = string.Format("{0}{1}", (int)Math.Round(angle), CalibrationHelper.GetAngleAbbreviation());
}
else
{
label = string.Format("{0:0.00} {1}", angle, CalibrationHelper.GetAngleAbbreviation());
}
Font tempFont = styleHelper.GetFont((float)transformer.Scale);
SizeF labelSize = canvas.MeasureString(label, tempFont);
// Background
float shiftx = (float)(transformer.Scale * angleHelper.TextPosition.X);
float shifty = (float)(transformer.Scale * angleHelper.TextPosition.Y);
PointF textOrigin = new PointF(shiftx + pointO.X - labelSize.Width / 2, shifty + pointO.Y - labelSize.Height / 2);
RectangleF backRectangle = new RectangleF(textOrigin, labelSize);
RoundedRectangle.Draw(canvas, backRectangle, brushFill, tempFont.Height / 4, false, false, null);
// Text
canvas.DrawString(label, tempFont, fontBrush, backRectangle.Location);
tempFont.Dispose();
fontBrush.Dispose();
}
}
