/// <summary>
/// Draw this <see cref="CurveItem"/> to the specified <see cref="Graphics"/>
/// device as a symbol at each defined point. The routine
/// only draws the symbols; the lines are draw by the
/// <see cref="Line.DrawCurve"/> method. This method
/// is normally only called by the Draw method of the
/// <see cref="CurveItem"/> object
/// </summary>
/// <param name="g">
/// A graphic device object to be drawn into. This is normally e.Graphics from the
/// PaintEventArgs argument to the Paint() method.
/// </param>
/// <param name="pane">
/// A reference to the <see cref="GraphPane"/> object that is the parent or
/// owner of this object.
/// </param>
/// <param name="curve">A <see cref="LineItem"/> representing this
/// curve.</param>
/// <param name="scaleFactor">
/// The scaling factor to be used for rendering objects. This is calculated and
/// passed down by the parent <see cref="GraphPane"/> object using the
/// <see cref="PaneBase.CalcScaleFactor"/> method, and is used to proportionally adjust
/// font sizes, etc. according to the actual size of the graph.
/// </param>
public void Draw(Graphics g, GraphPane pane, LineItem curve, float scaleFactor)
{
float tmpX, tmpY;
double curX, curY, lowVal;
IPointList points = curve.Points;
if (points != null && (_border.IsVisible || _fill.IsVisible))
{
SmoothingMode sModeSave = g.SmoothingMode;
if (_isAntiAlias)
{
g.SmoothingMode = SmoothingMode.HighQuality;
}
// For the sake of speed, go ahead and create a solid brush and a pen
// If it's a gradient fill, it will be created on the fly for each symbol
//SolidBrush brush = new SolidBrush( this.fill.Color );
Pen pen = _border.MakePen(pane.IsPenWidthScaled, scaleFactor);
if (curve.IsHighlighted)
{
pen.Width *= 3;
}
//Pen pen = new Pen( this.border.Color, pane.ScaledPenWidth(_border.PenWidth * scaleFactor) );
GraphicsPath path = MakePath(g, scaleFactor, curve.IsHighlighted, pen.Width);
RectangleF rect = path.GetBounds();
Brush brush = this.Fill.MakeBrush(rect);
ValueHandler valueHandler = new ValueHandler(pane, false);
Scale xScale = pane.XAxis.Scale;
Scale yScale = curve.GetYAxis(pane).Scale;
bool xIsLog = xScale.IsLog;
bool yIsLog = yScale.IsLog;
// If it's highlighted, draw a black "border" first. Actually not a border but rather the shape
// drawn with a thicker pen, over which the thinner pen will be used to draw the same shape in the
// main color.
if (curve.IsHighlighted)
{
const int highlightWidthIncrement = 4;
pen.Width += highlightWidthIncrement;
Color oldColor = pen.Color;
pen.Color = Color.Black;
GraphicsPath borderPath = MakePath(g, scaleFactor, curve.IsHighlighted, pen.Width);
for (int i = 0; i < points.Count; i++)
{
// Get the user scale values for the current point
// use the valueHandler only for stacked types
if (pane.LineType == LineType.Stack)
{
valueHandler.GetValues(curve, i, out curX, out lowVal, out curY);
}
// otherwise, just access the values directly. Avoiding the valueHandler for
// non-stacked types is an optimization to minimize overhead in case there are
// a large number of points.
else
{
curX = points[i].X;
if (curve is StickItem)
{
curY = points[i].Z;
}
else
{
curY = points[i].Y;
}
}
// Any value set to double max is invalid and should be skipped
// This is used for calculated values that are out of range, divide
// by zero, etc.
// Also, any value <= zero on a log scale is invalid
if (curX != PointPair.Missing &&
curY != PointPair.Missing &&
!System.Double.IsNaN(curX) &&
!System.Double.IsNaN(curY) &&
!System.Double.IsInfinity(curX) &&
!System.Double.IsInfinity(curY) &&
(curX > 0 || !xIsLog) &&
(!yIsLog || curY > 0.0))
{
// Transform the user scale values to pixel locations
tmpX = xScale.Transform(curve.IsOverrideOrdinal, i, curX);
tmpY = yScale.Transform(curve.IsOverrideOrdinal, i, curY);
// If the fill type for this symbol is a Gradient by value type,
// the make a brush corresponding to the appropriate current value
if (_fill.IsGradientValueType)
{
brush = _fill.MakeBrush(rect, points[i]);
}
// Otherwise, the brush is already defined
// Draw the symbol at the specified pixel location
this.DrawSymbol(g, tmpX, tmpY, borderPath, pen, Brushes.Black);
}
}
pen.Width -= highlightWidthIncrement;
pen.Color = oldColor;
}
// Loop over each defined point
for (int i = 0; i < points.Count; i++)
{
// Get the user scale values for the current point
// use the valueHandler only for stacked types
if (pane.LineType == LineType.Stack)
{
valueHandler.GetValues(curve, i, out curX, out lowVal, out curY);
}
// otherwise, just access the values directly. Avoiding the valueHandler for
// non-stacked types is an optimization to minimize overhead in case there are
// a large number of points.
else
{
curX = points[i].X;
if (curve is StickItem)
{
curY = points[i].Z;
}
else
{
curY = points[i].Y;
}
}
// Any value set to double max is invalid and should be skipped
// This is used for calculated values that are out of range, divide
// by zero, etc.
// Also, any value <= zero on a log scale is invalid
if (curX != PointPair.Missing &&
curY != PointPair.Missing &&
!System.Double.IsNaN(curX) &&
!System.Double.IsNaN(curY) &&
!System.Double.IsInfinity(curX) &&
!System.Double.IsInfinity(curY) &&
(curX > 0 || !xIsLog) &&
(!yIsLog || curY > 0.0))
{
// Transform the user scale values to pixel locations
tmpX = xScale.Transform(curve.IsOverrideOrdinal, i, curX);
tmpY = yScale.Transform(curve.IsOverrideOrdinal, i, curY);
// If the fill type for this symbol is a Gradient by value type,
// the make a brush corresponding to the appropriate current value
if (_fill.IsGradientValueType)
{
brush = _fill.MakeBrush(rect, points[i]);
}
// Otherwise, the brush is already defined
// Draw the symbol at the specified pixel location
this.DrawSymbol(g, tmpX, tmpY, path, pen, brush);
}
}
g.SmoothingMode = sModeSave;
}
}
/// <summary>
/// Draw this <see cref="CurveItem"/> to the specified <see cref="Graphics"/>
/// device as a symbol at each defined point. The routine
/// only draws the symbols; the lines are draw by the
/// <see cref="Line.DrawCurve"/> method. This method
/// is normally only called by the Draw method of the
/// <see cref="CurveItem"/> object
/// </summary>
/// <param name="g">
/// A graphic device object to be drawn into. This is normally e.Graphics from the
/// PaintEventArgs argument to the Paint() method.
/// </param>
/// <param name="pane">
/// A reference to the <see cref="GraphPane"/> object that is the parent or
/// owner of this object.
/// </param>
/// <param name="curve">A <see cref="LineItem"/> representing this
/// curve.</param>
/// <param name="scaleFactor">
/// The scaling factor to be used for rendering objects. This is calculated and
/// passed down by the parent <see cref="GraphPane"/> object using the
/// <see cref="PaneBase.CalcScaleFactor"/> method, and is used to proportionally adjust
/// font sizes, etc. according to the actual size of the graph.
/// </param>
/// <param name="isSelected">Indicates that the <see cref="Symbol" /> should be drawn
/// with attributes from the <see cref="Selection" /> class.
/// </param>
public void Draw(Graphics g, GraphPane pane, LineItem curve, float scaleFactor, bool isSelected)
{
var source = isSelected ? Selection.Symbol : this;
var minX = (int)pane.Chart.Rect.Left;
var maxX = (int)pane.Chart.Rect.Right;
var minY = (int)pane.Chart.Rect.Top;
var maxY = (int)pane.Chart.Rect.Bottom;
var points = curve.Points;
if (points == null || !IsVisible || (!Border.IsVisible && !Fill.IsVisible))
{
return;
}
var sModeSave = g.SmoothingMode;
if (IsAntiAlias)
{
g.SmoothingMode = SmoothingMode.HighQuality;
}
// For the sake of speed, go ahead and create a solid brush and a pen
// If it's a gradient fill, it will be created on the fly for each symbol
//SolidBrush brush = new SolidBrush( this.fill.Color );
using (var pen = source.Border.GetPen(pane, scaleFactor))
using (var path = MakePath(g, scaleFactor))
{
var rect = path.GetBounds();
using (var brush = source.Fill.MakeBrush(rect))
{
var valueHandler = new ValueHandler(pane, false);
var xScale = curve.GetXAxis(pane).Scale;
var yScale = curve.GetYAxis(pane).Scale;
var xIsLog = xScale.IsLog;
var yIsLog = yScale.IsLog;
var xIsOrdinal = xScale.IsAnyOrdinal;
var xMin = xScale.Min;
var xMax = xScale.Max;
// (Dale-a-b) we'll set an element to true when it has been drawn
var isPixelDrawn = new bool[maxX + 1, maxY + 1];
// Loop over each defined point
for (var i = 0; i < points.Count; i++)
{
// Get the user scale values for the current point
// use the valueHandler only for stacked types
double curX;
double curY;
if (pane.LineType == LineType.Stack)
{
double lowVal;
valueHandler.GetValues(curve, i, out curX, out lowVal, out curY);
}
// otherwise, just access the values directly. Avoiding the valueHandler for
// non-stacked types is an optimization to minimize overhead in case there are
// a large number of points.
else
{
curX = points[i].X;
curY = curve is StickItem ? points[i].Z : points[i].Y;
}
// Any value set to double max is invalid and should be skipped
// This is used for calculated values that are out of range, divide
// by zero, etc.
// Also, any value <= zero on a log scale is invalid
if (curX == PointPair.Missing || curY == PointPair.Missing ||
double.IsNaN(curX) || double.IsNaN(curY) || double.IsInfinity(curX) ||
double.IsInfinity(curY) || (!(curX > 0) && xIsLog) ||
(yIsLog && !(curY > 0.0)) ||
(!xIsOrdinal && (!(curX >= xMin) || !(curX <= xMax))))
{
continue;
}
// Transform the user scale values to pixel locations
var tmpX = (int)xScale.Transform(curve.IsOverrideOrdinal, i, curX);
var tmpY = (int)yScale.Transform(curve.IsOverrideOrdinal, i, curY);
// Maintain an array of "used" pixel locations to avoid duplicate drawing operations
if (tmpX >= minX && tmpX <= maxX && tmpY >= minY && tmpY <= maxY) // guard against the zoom-in case
{
if (isPixelDrawn[tmpX, tmpY])
{
continue;
}
isPixelDrawn[tmpX, tmpY] = true;
}
// If the fill type for this symbol is a Gradient by value type,
// the make a brush corresponding to the appropriate current value
if (Fill.IsGradientValueType || Border.GradientFill.IsGradientValueType)
{
using (var tBrush = Fill.MakeBrush(rect, points[i]))
using (var tPen = Border.GetPen(pane, scaleFactor, points[i]))
drawSymbol(g, tmpX, tmpY, path, tPen, tBrush, Type, Fill, Border);
}
else
{
// Otherwise, the brush is already defined
// Draw the symbol at the specified pixel location
drawSymbol(g, tmpX, tmpY, path, pen, brush, Type, Fill, Border);
}
}
}
}
g.SmoothingMode = sModeSave;
}
/// <summary>
/// Draw this <see cref="CurveItem"/> to the specified <see cref="Graphics"/>
/// device as a symbol at each defined point. The routine
/// only draws the symbols; the lines are draw by the
/// <see cref="Line.DrawCurve"/> method. This method
/// is normally only called by the Draw method of the
/// <see cref="CurveItem"/> object
/// </summary>
/// <param name="g">
/// A graphic device object to be drawn into. This is normally e.Graphics from the
/// PaintEventArgs argument to the Paint() method.
/// </param>
/// <param name="pane">
/// A reference to the <see cref="GraphPane"/> object that is the parent or
/// owner of this object.
/// </param>
/// <param name="curve">A <see cref="LineItem"/> representing this
/// curve.</param>
/// <param name="scaleFactor">
/// The scaling factor to be used for rendering objects. This is calculated and
/// passed down by the parent <see cref="GraphPane"/> object using the
/// <see cref="PaneBase.CalcScaleFactor"/> method, and is used to proportionally adjust
/// font sizes, etc. according to the actual size of the graph.
/// </param>
/// <param name="isSelected">Indicates that the <see cref="Symbol" /> should be drawn
/// with attributes from the <see cref="Selection" /> class.
/// </param>
public void Draw(Graphics g, GraphPane pane, LineItem curve, float scaleFactor,
bool isSelected)
{
Symbol source = this;
if (isSelected)
{
source = Selection.Symbol;
}
int tmpX, tmpY;
int minX = (int)pane.Chart.Rect.Left;
int maxX = (int)pane.Chart.Rect.Right;
int minY = (int)pane.Chart.Rect.Top;
int maxY = (int)pane.Chart.Rect.Bottom;
// (Dale-a-b) we'll set an element to true when it has been drawn
bool[,] isPixelDrawn = new bool[maxX + 1, maxY + 1];
double curX, curY, lowVal;
IPointList points = curve.Points;
if (points != null && (_border.IsVisible || _fill.IsVisible))
{
SmoothingMode sModeSave = g.SmoothingMode;
if (_isAntiAlias)
{
g.SmoothingMode = SmoothingMode.HighQuality;
}
// For the sake of speed, go ahead and create a solid brush and a pen
// If it's a gradient fill, it will be created on the fly for each symbol
//SolidBrush brush = new SolidBrush( this.fill.Color );
using (Pen pen = source._border.GetPen(pane, scaleFactor))
using (GraphicsPath path = MakePath(g, scaleFactor))
{
RectangleF rect = path.GetBounds();
using (Brush brush = source.Fill.MakeBrush(rect))
{
ValueHandler valueHandler = new ValueHandler(pane, false);
Scale xScale = curve.GetXAxis(pane).Scale;
Scale yScale = curve.GetYAxis(pane).Scale;
bool xIsLog = xScale.IsLog;
bool yIsLog = yScale.IsLog;
bool xIsOrdinal = xScale.IsAnyOrdinal;
double xMin = xScale.Min;
double xMax = xScale.Max;
// Loop over each defined point
for (int i = 0; i < points.Count; i++)
{
// Get the user scale values for the current point
// use the valueHandler only for stacked types
object tag = null;
if (pane.LineType == LineType.Stack)
{
valueHandler.GetValues(curve, i, out curX, out lowVal, out curY);
}
// otherwise, just access the values directly. Avoiding the valueHandler for
// non-stacked types is an optimization to minimize overhead in case there are
// a large number of points.
else
{
curX = points[i].X;
if (curve is StickItem)
{
curY = points[i].Z;
}
else
{
curY = points[i].Y;
}
tag = points[i].Tag;
}
// Any value set to double max is invalid and should be skipped
// This is used for calculated values that are out of range, divide
// by zero, etc.
// Also, any value <= zero on a log scale is invalid
if (curX != PointPair.Missing &&
curY != PointPair.Missing &&
!System.Double.IsNaN(curX) &&
!System.Double.IsNaN(curY) &&
!System.Double.IsInfinity(curX) &&
!System.Double.IsInfinity(curY) &&
(curX > 0 || !xIsLog) &&
(!yIsLog || curY > 0.0) &&
(xIsOrdinal || (curX >= xMin && curX <= xMax)))
{
// Transform the user scale values to pixel locations
tmpX = (int)xScale.Transform(curve.IsOverrideOrdinal, i, curX);
tmpY = (int)yScale.Transform(curve.IsOverrideOrdinal, i, curY);
tag = TransformTag(pane, tag, curX, curY, xScale, yScale, curve.IsOverrideOrdinal, i);
// Maintain an array of "used" pixel locations to avoid duplicate drawing operations
if (tmpX >= minX && tmpX <= maxX && tmpY >= minY && tmpY <= maxY) // guard against the zoom-in case
{
if (isPixelDrawn[tmpX, tmpY])
{
continue;
}
isPixelDrawn[tmpX, tmpY] = true;
}
// If the fill type for this symbol is a Gradient by value type,
// the make a brush corresponding to the appropriate current value
if (_fill.IsGradientValueType || _border._gradientFill.IsGradientValueType)
{
using (Brush tBrush = _fill.MakeBrush(rect, points[i]))
using (Pen tPen = _border.GetPen(pane, scaleFactor, points[i]))
this.DrawSymbol(g, tmpX, tmpY, path, tPen, tBrush);
}
else
{
// Otherwise, the brush is already defined
// Draw the symbol at the specified pixel location
this.DrawSymbol(g, tmpX, tmpY, path, pen, brush, tag);
}
}
}
}
}
g.SmoothingMode = sModeSave;
}
}
/// <summary>
/// Draw this <see cref="CurveItem"/> to the specified <see cref="Graphics"/>
/// device as a symbol at each defined point. The routine
/// only draws the symbols; the lines are draw by the
/// <see cref="Line.DrawCurve"/> method. This method
/// is normally only called by the Draw method of the
/// <see cref="CurveItem"/> object
/// </summary>
/// <param name="g">
/// A graphic device object to be drawn into. This is normally e.Graphics from the
/// PaintEventArgs argument to the Paint() method.
/// </param>
/// <param name="pane">
/// A reference to the <see cref="GraphPane"/> object that is the parent or
/// owner of this object.
/// </param>
/// <param name="curve">A <see cref="LineItem"/> representing this
/// curve.</param>
/// <param name="scaleFactor">
/// The scaling factor to be used for rendering objects. This is calculated and
/// passed down by the parent <see cref="GraphPane"/> object using the
/// <see cref="PaneBase.CalcScaleFactor"/> method, and is used to proportionally adjust
/// font sizes, etc. according to the actual size of the graph.
/// </param>
/// <param name="isSelected">Indicates that the <see cref="Symbol" /> should be drawn
/// with attributes from the <see cref="Selection" /> class.
/// </param>
public void Draw( Graphics g, GraphPane pane, LineItem curve, float scaleFactor,
bool isSelected )
{
Symbol source = this;
if ( isSelected )
source = Selection.Symbol;
int tmpX, tmpY;
int minX = (int)pane.Chart.Rect.Left;
int maxX = (int)pane.Chart.Rect.Right;
int minY = (int)pane.Chart.Rect.Top;
int maxY = (int)pane.Chart.Rect.Bottom;
// (Dale-a-b) we'll set an element to true when it has been drawn
bool[,] isPixelDrawn = new bool[maxX + 1, maxY + 1];
double curX, curY, lowVal;
IPointList points = curve.Points;
if ( points != null && ( _border.IsVisible || _fill.IsVisible ) )
{
SmoothingMode sModeSave = g.SmoothingMode;
if ( _isAntiAlias )
g.SmoothingMode = SmoothingMode.HighQuality;
// For the sake of speed, go ahead and create a solid brush and a pen
// If it's a gradient fill, it will be created on the fly for each symbol
//SolidBrush brush = new SolidBrush( this.fill.Color );
using ( Pen pen = source._border.GetPen( pane, scaleFactor ) )
using ( GraphicsPath path = MakePath( g, scaleFactor ) )
{
RectangleF rect = path.GetBounds();
using ( Brush brush = source.Fill.MakeBrush( rect ) )
{
ValueHandler valueHandler = new ValueHandler( pane, false );
Scale xScale = curve.GetXAxis( pane ).Scale;
Scale yScale = curve.GetYAxis( pane ).Scale;
bool xIsLog = xScale.IsLog;
bool yIsLog = yScale.IsLog;
bool xIsOrdinal = xScale.IsAnyOrdinal;
double xMin = xScale.Min;
double xMax = xScale.Max;
// Loop over each defined point
for ( int i = 0; i < points.Count; i++ )
{
// Get the user scale values for the current point
// use the valueHandler only for stacked types
if ( pane.LineType == LineType.Stack )
{
valueHandler.GetValues( curve, i, out curX, out lowVal, out curY );
}
// otherwise, just access the values directly. Avoiding the valueHandler for
// non-stacked types is an optimization to minimize overhead in case there are
// a large number of points.
else
{
curX = points[i].X;
if ( curve is StickItem )
curY = points[i].Z;
else
curY = points[i].Y;
}
// Any value set to double max is invalid and should be skipped
// This is used for calculated values that are out of range, divide
// by zero, etc.
// Also, any value <= zero on a log scale is invalid
if ( curX != PointPair.Missing &&
curY != PointPair.Missing &&
!System.Double.IsNaN( curX ) &&
!System.Double.IsNaN( curY ) &&
!System.Double.IsInfinity( curX ) &&
!System.Double.IsInfinity( curY ) &&
( curX > 0 || !xIsLog ) &&
( !yIsLog || curY > 0.0 ) &&
( xIsOrdinal || ( curX >= xMin && curX <= xMax ) ) )
{
// Transform the user scale values to pixel locations
tmpX = (int) xScale.Transform( curve.IsOverrideOrdinal, i, curX );
tmpY = (int) yScale.Transform( curve.IsOverrideOrdinal, i, curY );
// Maintain an array of "used" pixel locations to avoid duplicate drawing operations
if ( tmpX >= minX && tmpX <= maxX && tmpY >= minY && tmpY <= maxY ) // guard against the zoom-in case
{
if ( isPixelDrawn[tmpX, tmpY] )
continue;
isPixelDrawn[tmpX, tmpY] = true;
}
// If the fill type for this symbol is a Gradient by value type,
// the make a brush corresponding to the appropriate current value
if ( _fill.IsGradientValueType || _border._gradientFill.IsGradientValueType )
{
using ( Brush tBrush = _fill.MakeBrush( rect, points[i] ) )
using ( Pen tPen = _border.GetPen( pane, scaleFactor, points[i] ) )
this.DrawSymbol( g, tmpX, tmpY, path, tPen, tBrush );
}
else
{
// Otherwise, the brush is already defined
// Draw the symbol at the specified pixel location
this.DrawSymbol( g, tmpX, tmpY, path, pen, brush );
}
}
}
}
}
g.SmoothingMode = sModeSave;
}
}
/// <summary>
/// Draw this <see cref="CurveItem"/> to the specified <see cref="Graphics"/>
/// device as a symbol at each defined point. The routine
/// only draws the symbols; the lines are draw by the
/// <see cref="Line.DrawCurve"/> method. This method
/// is normally only called by the Draw method of the
/// <see cref="CurveItem"/> object
/// </summary>
/// <param name="g">
/// A graphic device object to be drawn into. This is normally e.Graphics from the
/// PaintEventArgs argument to the Paint() method.
/// </param>
/// <param name="pane">
/// A reference to the <see cref="GraphPane"/> object that is the parent or
/// owner of this object.
/// </param>
/// <param name="curve">A <see cref="LineItem"/> representing this
/// curve.</param>
/// <param name="scaleFactor">
/// The scaling factor to be used for rendering objects. This is calculated and
/// passed down by the parent <see cref="GraphPane"/> object using the
/// <see cref="PaneBase.CalcScaleFactor"/> method, and is used to proportionally adjust
/// font sizes, etc. according to the actual size of the graph.
/// </param>
public void Draw(Graphics g, GraphPane pane, LineItem curve, float scaleFactor)
{
float tmpX, tmpY;
double curX, curY, lowVal;
IPointList points = curve.Points;
if (points != null && (_border.IsVisible || _fill.IsVisible))
{
SmoothingMode sModeSave = g.SmoothingMode;
if (_isAntiAlias)
g.SmoothingMode = SmoothingMode.HighQuality;
// For the sake of speed, go ahead and create a solid brush and a pen
// If it's a gradient fill, it will be created on the fly for each symbol
//SolidBrush brush = new SolidBrush( this.fill.Color );
using (Pen pen = _border.MakePen(pane.IsPenWidthScaled, scaleFactor))
using (GraphicsPath path = MakePath(g, scaleFactor))
{
RectangleF rect = path.GetBounds();
using (Brush brush = Fill.MakeBrush(rect))
{
var valueHandler = new ValueHandler(pane, false);
Scale xScale = pane.XAxis.Scale;
Scale yScale = curve.GetYAxis(pane).Scale;
bool xIsLog = xScale.IsLog;
bool yIsLog = yScale.IsLog;
// Loop over each defined point
for (int i = 0; i < points.Count; i++)
{
// Get the user scale values for the current point
// use the valueHandler only for stacked types
if (pane.LineType == LineType.Stack)
{
valueHandler.GetValues(curve, i, out curX, out lowVal, out curY);
}
// otherwise, just access the values directly. Avoiding the valueHandler for
// non-stacked types is an optimization to minimize overhead in case there are
// a large number of points.
else
{
curX = points[i].X;
if (curve is StickItem)
curY = points[i].Z;
else
curY = points[i].Y;
}
// Any value set to double max is invalid and should be skipped
// This is used for calculated values that are out of range, divide
// by zero, etc.
// Also, any value <= zero on a log scale is invalid
if (curX != PointPair.Missing &&
curY != PointPair.Missing &&
!Double.IsNaN(curX) &&
!Double.IsNaN(curY) &&
!Double.IsInfinity(curX) &&
!Double.IsInfinity(curY) &&
(curX > 0 || !xIsLog) &&
(!yIsLog || curY > 0.0))
{
// Transform the user scale values to pixel locations
tmpX = xScale.Transform(curve.IsOverrideOrdinal, i, curX);
tmpY = yScale.Transform(curve.IsOverrideOrdinal, i, curY);
// If the fill type for this symbol is a Gradient by value type,
// the make a brush corresponding to the appropriate current value
if (_fill.IsGradientValueType)
{
using (Brush tBrush = _fill.MakeBrush(rect, points[i]))
DrawSymbol(g, tmpX, tmpY, path, pen, tBrush);
}
else
{
// Otherwise, the brush is already defined
// Draw the symbol at the specified pixel location
DrawSymbol(g, tmpX, tmpY, path, pen, brush);
}
}
}
}
}
g.SmoothingMode = sModeSave;
}
}
