예제 #1
0
        /// <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);
        }
예제 #2
0
        /// <summary>
        /// This method is called whenever the control must be rendered.  All rendering takes
        /// place off-screen, which prevents flickering.  The "PolarControl" base class automatically
        /// handles tasks such as resizing and smoothing.  All you have to be concerned with is
        /// calculating the polar coordinates to draw.
        /// </summary>
        /// <param name="e"></param>
        protected override void OnPaintOffScreen(PaintEventArgs e)
        {
            /* The DotSpatial.Positioning comes with a special class named "PolarGraphics," which works
             * almost identically to the "Graphics" class, except that coordinates are given
             * in polar form instead of (X, Y).
             *
             * Polar coordinates are given as an angle and a radius.  The angle is between 0°
             * and 360° clockwise from the top of the control.  The radius is zero (0) at the
             * center of the control, and 100 at the outer edge.  So, a polar coordinate of 90°
             * with a radius of 50 would mark a point straight to the right, half way to the
             * edge.  Mastering polar coordinates gives you the opportunity to create your
             * own controls.
             */

            // Make a PolarGraphics class for easier drawing using polar coordinates
            PolarGraphics f = CreatePolarGraphics(e.Graphics);

            #region Drawing of Tick Marks

            // Draw sixty small tick marks around the control
            for (double value = 0; value < 60; value += 1)
            {
                // There are 120 tick marks in 360°
                Angle angle = new Angle(value * (360 / 60));

                // Get the coordinate of the line's start and end
                PolarCoordinate start = new PolarCoordinate(96, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
                PolarCoordinate end   = new PolarCoordinate(100, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);

                // And draw a line
                f.DrawLine(_pMinorTickPen, start, end);
            }

            // Draw twelve tick marks
            for (double value = 1; value <= 12; value += 1)
            {
                // Convert the value to an angle
                Angle angle = new Angle(value * (360 / 12));

                // Get the coordinate of the line's start
                PolarCoordinate start = new PolarCoordinate(93, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
                PolarCoordinate end   = new PolarCoordinate(100, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);

                // And draw the tick mark
                f.DrawLine(_pMajorTickPen, start, end);

                // Label the clock position around the circle
                if (_pHoursFont != null)
                {
                    string s = Convert.ToString(value, CultureInfo.CurrentUICulture);
                    f.DrawCenteredString(s, _pHoursFont, _pValueLabelBrush,
                                         new PolarCoordinate(85, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise));
                }
            }

            #endregion

            /* In order to make the control more appealing, we'll make the hours, minutes, and
             * seconds hand as accurate as possible.  For example, if the time is 5:30, the hours
             * hand should be halfway between 5 and 6, or 5.5.  To get these values, we'll
             * calculate "fractional" hours, minutes and seconds using the TimeSpan structure.
             *
             * when you look at the control, you'll see that the minutes hand moves slowly but
             * smoothly as time progresses.  With smoothing enabled, you almost can't tell it's
             * actually moving.
             */

            // Calculate the time elapsed since midnight
            DateTime midnight          = new DateTime(_pValue.Year, _pValue.Month, _pValue.Day);
            TimeSpan timeSinceMidnight = _pValue.Subtract(midnight);

            #region Drawing of Hours

            // There are twelve hours in 360° of a circle
            Angle hourAngle = new Angle(timeSinceMidnight.TotalHours * (360 / 12));

            // Draw the hour "needle"
            f.DrawLine(_pHoursPen, PolarCoordinate.Center,
                       new PolarCoordinate(30, hourAngle, Azimuth.North, PolarCoordinateOrientation.Clockwise));

            #endregion

            #region Drawing of Minutes

            // There are sixty minutes in 360° of a circle
            Angle minuteAngle = new Angle(timeSinceMidnight.TotalMinutes * (360 / 60));

            // Draw the Minute "needle"
            f.DrawLine(_pMinutesPen, PolarCoordinate.Center,
                       new PolarCoordinate(80, minuteAngle, Azimuth.North, PolarCoordinateOrientation.Clockwise));

            #endregion

            #region Drawing of Seconds

            // There are sixty seconds in 360° of a circle
            Angle secondAngle = new Angle(timeSinceMidnight.TotalSeconds * (360 / 60));

            // Draw the Seconds "needle"
            f.DrawLine(_pSecondsPen, PolarCoordinate.Center,
                       new PolarCoordinate(90, secondAngle, Azimuth.North, PolarCoordinateOrientation.Clockwise));

            #endregion
        }
예제 #3
0
        /// <inheritdocs/>
        protected override void OnPaintOffScreen(PaintEventArgs e)
        {
            PolarGraphics f = CreatePolarGraphics(e.Graphics);

            // What altitude are we drawing?
#if PocketPC
            Speed SpeedToRender = pSpeed;
#else
            Speed speedToRender = new Speed(_valueInterpolator[_interpolationIndex], _pSpeed.Units);
#endif

            // Cache drawing intervals and such to prevent a race condition
            double minorInterval            = _pMinorTickInterval.Value;
            double majorInterval            = _pMajorTickInterval.Value;
            double cachedSpeedLabelInterval = _pSpeedLabelInterval.ToUnitType(_pMaximumSpeed.Units).Value;
            Speed  maxSpeed  = _pMaximumSpeed.Clone();
            double minorStep = _pMinorTickInterval.ToUnitType(_pMaximumSpeed.Units).Value;
            double majorStep = _pMajorTickInterval.ToUnitType(_pMaximumSpeed.Units).Value;

            // Draw tick marks
            double          angle;
            PolarCoordinate start;
            PolarCoordinate end;

            #region Draw minor tick marks

            if (minorInterval > 0)
            {
                for (double speed = 0; speed < maxSpeed.Value; speed += minorStep)
                {
                    // Convert the speed to an angle
                    angle = speed * _conversionFactor + _pMinimumAngle.DecimalDegrees;
                    // Get the coordinate of the line's start
                    start = new PolarCoordinate(95, angle, Azimuth.South, PolarCoordinateOrientation.Clockwise);
                    end   = new PolarCoordinate(100, angle, Azimuth.South, PolarCoordinateOrientation.Clockwise);
                    // And draw a line
                    Pen p = new Pen(_minorTickPenColor);
                    f.DrawLine(p, start, end);
                    p.Dispose();
                }
            }

            #endregion

            #region Draw major tick marks

            if (majorInterval > 0)
            {
                using (Pen majorPen = new Pen(_majorTickPenColor))
                {
                    for (double speed = 0; speed < maxSpeed.Value; speed += majorStep)
                    {
                        // Convert the speed to an angle
                        angle = speed * _conversionFactor + _pMinimumAngle.DecimalDegrees;
                        // Get the coordinate of the line's start
                        start = new PolarCoordinate(90, angle, Azimuth.South, PolarCoordinateOrientation.Clockwise);
                        end   = new PolarCoordinate(100, angle, Azimuth.South, PolarCoordinateOrientation.Clockwise);
                        // And draw a line

                        f.DrawLine(majorPen, start, end);
                    }

                    #region Draw a major tick mark at the maximum speed

                    // Convert the speed to an angle
                    angle = maxSpeed.Value * _conversionFactor + _pMinimumAngle.DecimalDegrees;
                    // Get the coordinate of the line's start
                    start = new PolarCoordinate(90, angle, Azimuth.South, PolarCoordinateOrientation.Clockwise);
                    end   = new PolarCoordinate(100, angle, Azimuth.South, PolarCoordinateOrientation.Clockwise);
                    // And draw a line
                    f.DrawLine(majorPen, start, end);

                    #endregion
                }
            }

            #endregion

            using (SolidBrush fontBrush = new SolidBrush(_speedLabelBrushColor))
            {
                if (cachedSpeedLabelInterval > 0)
                {
                    for (double speed = 0; speed < maxSpeed.Value; speed += cachedSpeedLabelInterval)
                    {
                        // Convert the speed to an angle
                        angle = speed * _conversionFactor + _pMinimumAngle.DecimalDegrees;
                        // And draw a line
                        f.DrawCenteredString(new Speed(speed, maxSpeed.Units).ToString(_pSpeedLabelFormat, CultureInfo.CurrentCulture), Font, fontBrush,
                                             new PolarCoordinate(75, angle, Azimuth.South, PolarCoordinateOrientation.Clockwise));
                    }

                    // Convert the speed to an angle
                    angle = maxSpeed.Value * _conversionFactor + _pMinimumAngle.DecimalDegrees;

                    // And draw the speed label
                    f.DrawCenteredString(maxSpeed.ToString(_pSpeedLabelFormat, CultureInfo.CurrentCulture), Font, fontBrush,
                                         new PolarCoordinate(75, angle, Azimuth.South, PolarCoordinateOrientation.Clockwise));
                }

                // Draw the units for the speedometer
                if (_pIsUnitLabelVisible)
                {
                    f.DrawCenteredString(_pMaximumSpeed.ToString("u", CultureInfo.CurrentCulture), Font, fontBrush,
                                         new PolarCoordinate(90, Angle.Empty, Azimuth.South, PolarCoordinateOrientation.Clockwise));
                }
            }

            PolarCoordinate[] needle = new PolarCoordinate[_speedometerNeedle.Length];
            for (int index = 0; index < needle.Length; index++)
            {
                needle[index] = _speedometerNeedle[index].Rotate((speedToRender.ToUnitType(_pMaximumSpeed.Units).Value *_conversionFactor) + _pMinimumAngle.DecimalDegrees);
            }

            // Draw an ellipse at the center
            f.DrawEllipse(Pens.Gray, PolarCoordinate.Empty, 10);

#if !PocketPC
            // Now draw a shadow
            f.Graphics.TranslateTransform(_pNeedleShadowSize.Width, _pNeedleShadowSize.Height, MatrixOrder.Append);
            using (Brush b = new SolidBrush(_needleShadowBrushColor)) f.FillPolygon(b, needle);

            f.Graphics.ResetTransform();
#endif

            // Then draw the actual needle
            using (SolidBrush needleFill = new SolidBrush(_needleFillColor)) f.FillPolygon(needleFill, needle);
            using (Pen needlePen = new Pen(_needleOutlineColor)) f.DrawPolygon(needlePen, needle);
        }
예제 #4
0
        /// <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);
        }