/// <inheritdocs/>
protected override void OnPaintOffScreen(PaintEventArgs e)
{
PolarGraphics f = CreatePolarGraphics(e.Graphics);
// What bearing are we drawing?
#if PocketPC
Azimuth BearingToRender = _Bearing;
#else
Azimuth bearingToRender = new Azimuth(_valueInterpolator[_interpolationIndex]);
#endif
// Cache drawing options in order to prevent race conditions during
// drawing!
double minorInterval = _minorTickInterval.DecimalDegrees;
double majorInterval = _majorTickInterval.DecimalDegrees;
double directionInterval = _directionLabelInterval.DecimalDegrees;
double angleInterval = _angleLabelInterval.DecimalDegrees;
// Draw tick marks
if (minorInterval > 0)
{
for (double angle = 0; angle < 360; angle += minorInterval)
{
// And draw a line
f.DrawLine(_minorTickPen, new PolarCoordinate(98, angle), new PolarCoordinate(100, angle));
}
}
// Draw tick marks
if (majorInterval > 0)
{
for (double angle = 0; angle < 360; angle += majorInterval)
{
// And draw a line
f.DrawLine(_majorTickPen, new PolarCoordinate(95, angle), new PolarCoordinate(100, angle));
}
}
if (directionInterval > 0)
{
for (double angle = 0; angle < 360; angle += directionInterval)
{
// And draw a line
f.DrawLine(_directionTickPen, new PolarCoordinate(92, angle), new PolarCoordinate(100, angle));
}
}
if (angleInterval > 0)
{
for (double angle = 0; angle < 360; angle += angleInterval)
{
// Get the coordinate of the line's start
PolarCoordinate start = new PolarCoordinate(60, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
#if PocketPC
f.DrawCenteredString(((Angle)angle).ToString(_AngleLabelFormat, CultureInfo.CurrentCulture), _AngleLabelFont, _AngleLabelBrush, start);
#else
f.DrawRotatedString(((Angle)angle).ToString(_angleLabelFormat, CultureInfo.CurrentCulture), _angleLabelFont, _angleLabelBrush, start);
#endif
}
}
if (directionInterval > 0)
{
for (double angle = 0; angle < 360; angle += directionInterval)
{
// Get the coordinate of the line's start
PolarCoordinate start = new PolarCoordinate(80, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
#if PocketPC
f.DrawCenteredString(((Azimuth)angle).ToString("c", CultureInfo.CurrentCulture), _DirectionLabelFont, _DirectionLabelBrush, start);
#else
f.DrawRotatedString(((Azimuth)angle).ToString("c", CultureInfo.CurrentCulture), _directionLabelFont, _directionLabelBrush, start);
#endif
}
}
// Draw an ellipse at the center
f.DrawEllipse(_centerPen, PolarCoordinate.Empty, 10);
// Now draw the needle shadow
PolarCoordinate[] needleNorth = _needlePointsNorth.Clone() as PolarCoordinate[];
PolarCoordinate[] needleSouth = _needlePointsSouth.Clone() as PolarCoordinate[];
// Adjust the needle to the current bearing
if (needleNorth != null)
{
for (int index = 0; index < needleNorth.Length; index++)
{
needleNorth[index] = needleNorth[index].Rotate(bearingToRender.DecimalDegrees);
if (needleSouth != null)
{
needleSouth[index] = needleSouth[index].Rotate(bearingToRender.DecimalDegrees);
}
}
}
#if !PocketPC
// Now draw a shadow
f.Graphics.TranslateTransform(_pNeedleShadowSize.Width, _pNeedleShadowSize.Height, MatrixOrder.Append);
f.FillPolygon(_pNeedleShadowBrush, needleNorth);
f.FillPolygon(_pNeedleShadowBrush, needleSouth);
f.Graphics.ResetTransform();
#endif
f.FillPolygon(_pNorthNeedleBrush, needleNorth);
f.DrawPolygon(_pNorthNeedlePen, needleNorth);
f.FillPolygon(_pSouthNeedleBrush, needleSouth);
f.DrawPolygon(_pSouthNeedlePen, needleSouth);
}
/// <inheritdocs/>
protected override void OnPaintOffScreen(PaintEventArgs e)
{
PolarGraphics f = CreatePolarGraphics(e.Graphics);
// What altitude are we drawing?
Distance altitudeToRender = new Distance(_valueInterpolator[_interpolationIndex], _altitude.Units);
// There are 100 tick marks in 360 degrees. 3.6° per tick mark
const double conversionFactor = 3.6;
// Draw tick marks
if (_minorTickPen != null)
{
for (double alt = 0; alt < 100; alt += 1)
{
// Convert the speed to an angle
Angle angle = new Angle(alt * conversionFactor);
// Get the coordinate of the line's start
PolarCoordinate start = new PolarCoordinate(95, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
PolarCoordinate end = new PolarCoordinate(100, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
// And draw a line
f.DrawLine(_minorTickPen, start, end);
}
}
// Draw tick marks
if (_majorTickPen != null)
{
for (double alt = 0; alt < 100; alt += 10)
{
// Convert the speed to an angle
Angle angle = new Angle(alt * conversionFactor);
// Get the coordinate of the line's start
PolarCoordinate start = new PolarCoordinate(94, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
PolarCoordinate end = new PolarCoordinate(100, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
// And draw a line
f.DrawLine(_majorTickPen, start, end);
// And also a string
string s = Convert.ToString(alt * 0.1, CultureInfo.CurrentCulture);
f.DrawCenteredString(s, _altitudeLabelFont, _altitudeLabelBrush,
new PolarCoordinate(85, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise));
}
}
// Calculate all needle values
double pTensOfThousandsValue = altitudeToRender.Value / 1000.0;
double pThousandsValue = altitudeToRender.Value / 100.0;
double pValue = altitudeToRender.Value / 10.0;
// Now draw the tens-of-thousands needle
// Rotate the needle to the right place
PolarCoordinate[] needle1 = new PolarCoordinate[_tensOfThousandsNeedle.Length];
for (int index = 0; index < needle1.Length; index++)
{
needle1[index] = _tensOfThousandsNeedle[index].Rotate(pTensOfThousandsValue * conversionFactor);
}
// Now draw the tens-of-thousands needle
// Rotate the needle to the right place
PolarCoordinate[] needle2 = new PolarCoordinate[_thousandsNeedle.Length];
for (int index = 0; index < needle2.Length; index++)
{
needle2[index] = _thousandsNeedle[index].Rotate(pThousandsValue * conversionFactor);
}
// Now draw the tens-of-Hundreds needle
// Rotate the needle to the right place
PolarCoordinate[] needle3 = new PolarCoordinate[_hundredsNeedle.Length];
for (int index = 0; index < needle3.Length; index++)
{
needle3[index] = _hundredsNeedle[index].Rotate(pValue * conversionFactor);
}
string altitudeString = altitudeToRender.ToString(_valueFormat, CultureInfo.CurrentCulture);
//SizeF FontSize = f.Graphics.MeasureString(AltitudeString, pValueFont);
f.DrawRotatedString(altitudeString, _valueFont,
_valueBrush, new PolarCoordinate(45.0f, Angle.Empty, Azimuth.North, PolarCoordinateOrientation.Clockwise));
// Draw an ellipse at the center
f.DrawEllipse(_centerPen, PolarCoordinate.Empty, 10);
f.Graphics.TranslateTransform(_needleShadowSize.Width, _needleShadowSize.Height, MatrixOrder.Append);
f.FillPolygon(_needleShadowBrush, needle1);
f.FillPolygon(_needleShadowBrush, needle2);
f.FillPolygon(_needleShadowBrush, needle3);
f.Graphics.ResetTransform();
f.FillPolygon(_tensOfThousandsBrush, needle1);
f.DrawPolygon(_tensOfThousandsPen, needle1);
f.FillPolygon(_thousandsBrush, needle2);
f.DrawPolygon(_thousandsPen, needle2);
f.FillPolygon(_hundredsBrush, needle3);
f.DrawPolygon(_hundredsPen, needle3);
// Draw an ellipse at the center
f.FillEllipse(_hundredsBrush, PolarCoordinate.Empty, 7);
f.DrawEllipse(_hundredsPen, PolarCoordinate.Empty, 7);
}
