/// <summary>
/// Draws the point plot on a GDI+ surface against the provided x and y axes.
/// </summary>
/// <param name="g">The GDI+ surface on which to draw.</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
public virtual void Draw( Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis )
{
SequenceAdapter data_ =
new SequenceAdapter( this.DataSource, this.DataMember, this.OrdinateData, this.AbscissaData );
float leftCutoff_ = xAxis.PhysicalMin.X - marker_.Size;
float rightCutoff_ = xAxis.PhysicalMax.X + marker_.Size;
for (int i=0; i<data_.Count; ++i)
{
if ( !Double.IsNaN(data_[i].X) && !Double.IsNaN(data_[i].Y) )
{
PointF xPos = xAxis.WorldToPhysical( data_[i].X, false);
if (xPos.X < leftCutoff_ || rightCutoff_ < xPos.X)
continue;
PointF yPos = yAxis.WorldToPhysical( data_[i].Y, false);
marker_.Draw( g, (int)xPos.X, (int)yPos.Y );
if (marker_.DropLine)
{
PointD yMin = new PointD( data_[i].X, Math.Max( 0.0f, yAxis.Axis.WorldMin ) );
PointF yStart = yAxis.WorldToPhysical( yMin.Y, false );
g.DrawLine( marker_.Pen, (int)xPos.X,(int)yStart.Y, (int)xPos.X,(int)yPos.Y );
}
}
}
}
/// <summary>
/// Draws the marker on a plot surface.
/// </summary>
/// <param name="g">graphics surface on which to draw</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
public void Draw( System.Drawing.Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis )
{
PointF point = new PointF(
xAxis.WorldToPhysical( x_, true ).X,
yAxis.WorldToPhysical( y_, true ).Y );
marker_.Draw( g, (int)point.X, (int)point.Y );
}
/// <summary>
/// Constructs the optimal ITransform2D object for the supplied x and y axes.
/// </summary>
/// <param name="xAxis">The xAxis to use for the world to physical transform.</param>
/// <param name="yAxis">The yAxis to use for the world to physical transform.</param>
/// <returns>An ITransform2D derived object for converting from world to physical coordinates.</returns>
public static ITransform2D GetTransformer( PhysicalAxis xAxis, PhysicalAxis yAxis )
{
ITransform2D ret = null;
// if (xAxis.Axis.IsLinear && yAxis.Axis.IsLinear && !xAxis.Axis.Reversed && !yAxis.Axis.Reversed)
// ret = new FastTransform2D( xAxis, yAxis );
// else
// ret = new DefaultTransform2D( xAxis, yAxis );
ret = new DefaultTransform2D( xAxis, yAxis );
return ret;
}
/// <summary>
/// Construct from a fully-blown physical axis.
/// </summary>
/// <param name="physicalAxis">the physical axis to get initial values from.</param>
public PageAlignedPhysicalAxis( PhysicalAxis physicalAxis )
{
worldMin_ = physicalAxis.Axis.WorldMin;
worldMax_ = physicalAxis.Axis.WorldMax;
worldLength_ = worldMax_ - worldMin_;
if ( physicalAxis.PhysicalMin.X == physicalAxis.PhysicalMax.X )
{
pMin_ = physicalAxis.PhysicalMin.Y;
pMax_ = physicalAxis.PhysicalMax.Y;
}
else if ( physicalAxis.PhysicalMin.Y == physicalAxis.PhysicalMax.Y )
{
pMin_ = physicalAxis.PhysicalMin.X;
pMax_ = physicalAxis.PhysicalMax.X;
}
else
{
throw new NPlotException( "Physical axis is not page aligned" );
}
pLength_ = pMax_ - pMin_;
}
/// <summary>
/// Does all the work in drawing grid lines.
/// </summary>
/// <param name="g">The graphics surface on which to render.</param>
/// <param name="axis">TODO</param>
/// <param name="orthogonalAxis">TODO</param>
/// <param name="a">the list of world values to draw grid lines at.</param>
/// <param name="horizontal">true if want horizontal lines, false otherwise.</param>
/// <param name="p">the pen to use to draw the grid lines.</param>
private void DrawGridLines(
Graphics g, PhysicalAxis axis, PhysicalAxis orthogonalAxis,
System.Collections.ArrayList a, bool horizontal, Pen p)
{
for (int i = 0; i < a.Count; ++i)
{
PointF p1 = axis.WorldToPhysical((double)a[i], true);
PointF p2 = p1;
Point p3 = orthogonalAxis.PhysicalMax;
Point p4 = orthogonalAxis.PhysicalMin;
if (horizontal)
{
p1.Y = p4.Y;
p2.Y = p3.Y;
}
else
{
p1.X = p4.X;
p2.X = p3.X;
}
// note: casting all drawing was necessary for sane display. why?
g.DrawLine(p, (int)p1.X, (int)p1.Y, (int)p2.X, (int)p2.Y);
}
}
/// <summary>
/// Draw on to the supplied graphics surface against the supplied axes.
/// </summary>
/// <param name="g">The graphics surface on which to draw.</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
/// <remarks>TODO: block positions may be off by a pixel or so. maybe. Re-think calculations</remarks>
public void Draw( Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis )
{
if ( data_==null || data_.GetLength(0) == 0 || data_.GetLength(1) == 0 )
{
return;
}
double worldWidth = xAxis.Axis.WorldMax - xAxis.Axis.WorldMin;
double numBlocksHorizontal = worldWidth / this.xStep_;
double worldHeight = yAxis.Axis.WorldMax - yAxis.Axis.WorldMin;
double numBlocksVertical = worldHeight / this.yStep_;
double physicalWidth = xAxis.PhysicalMax.X - xAxis.PhysicalMin.X;
double blockWidth = physicalWidth / numBlocksHorizontal;
bool wPositive = true;
if (blockWidth < 0.0)
{
wPositive = false;
}
blockWidth = Math.Abs(blockWidth)+1;
double physicalHeight = yAxis.PhysicalMax.Y - yAxis.PhysicalMin.Y;
double blockHeight = physicalHeight / numBlocksVertical;
bool hPositive = true;
if (blockHeight < 0.0)
{
hPositive = false;
}
blockHeight = Math.Abs(blockHeight)+1;
for (int i=0; i<data_.GetLength(0); ++i)
{
for (int j=0; j<data_.GetLength(1); ++j)
{
double wX = (double)j*this.xStep_ + xStart_;
double wY = (double)i*this.yStep_ + yStart_;
if ( !hPositive )
{
wY += yStep_;
}
if (!wPositive )
{
wX += xStep_;
}
if (this.center_)
{
wX -= this.xStep_/2.0;
wY -= this.yStep_/2.0;
}
Pen p = new Pen( this.Gradient.GetColor( (data_[i,j]-this.dataMin_)/(this.dataMax_-this.dataMin_) ) );
int x = (int)xAxis.WorldToPhysical(wX,false).X;
int y = (int)yAxis.WorldToPhysical(wY,false).Y;
Brush brush = new SolidBrush(p.Color);
g.FillRectangle( brush,
x,
y,
(int)blockWidth,
(int)blockHeight);
//g.DrawRectangle(Pens.White,x,y,(int)blockWidth,(int)blockHeight);
}
}
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="xAxis">The x-axis to use for transforms</param>
/// <param name="yAxis">The y-axis to use for transforms</param>
public FastTransform2D(PhysicalAxis xAxis, PhysicalAxis yAxis)
{
xAxis_ = new PageAlignedPhysicalAxis(xAxis);
yAxis_ = new PageAlignedPhysicalAxis(yAxis);
}
/// <summary>
/// Draws the candle plot on a GDI+ surface agains the provided x and y axes.
/// </summary>
/// <param name="g">The GDI+ surface on which to draw.</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
public void Draw( Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis )
{
CandleDataAdapter cd = new CandleDataAdapter( this.DataSource, this.DataMember,
this.AbscissaData, this.OpenData, this.LowData, this.HighData, this.CloseData );
Brush bearishBrush = new SolidBrush( BearishColor );
Brush bullishBrush = new SolidBrush( BullishColor );
uint offset = 0;
if (this.centered_)
{
offset = (uint)(CalculatePhysicalSeparation(cd,xAxis) / 2.0f);
}
uint addAmount = (uint)StickWidth/2;
uint stickWidth = (uint)StickWidth;
if (StickWidth == AutoScaleStickWidth)
{
// default
addAmount = 2;
stickWidth = 4;
float minDist = CalculatePhysicalSeparation( cd, xAxis );
addAmount = (uint)(minDist / 3);
stickWidth = addAmount * 2;
}
Pen p = new Pen(this.color_);
/*
// brant hyatt proposed.
if (this.Style == Styles.Stick)
{
p.Width = stickWidth;
addAmount = stickWidth + 2;
}
*/
for (int i=0; i<cd.Count; ++i)
{
PointOLHC point = (PointOLHC)cd[i];
if ( (!double.IsNaN (point.Open)) && (!double.IsNaN(point.High)) && (!double.IsNaN (point.Low)) && (!double.IsNaN(point.Close)) )
{
int xPos = (int)(xAxis.WorldToPhysical( point.X, false )).X;
if (xPos + offset + addAmount < xAxis.PhysicalMin.X || xAxis.PhysicalMax.X < xPos + offset - addAmount)
continue;
int yPos1 = (int)(yAxis.WorldToPhysical( point.Low, false )).Y;
int yPos2 = (int)(yAxis.WorldToPhysical( point.High, false )).Y;
int yPos3 = (int)(yAxis.WorldToPhysical( point.Open, false )).Y;
int yPos4 = (int)(yAxis.WorldToPhysical( point.Close, false )).Y;
if (this.Style == Styles.Stick)
{
/*
// brant hyatt proposed.
if (i > 0)
{
if ( ((PointOLHC)cd[i]).Close > ((PointOLHC)cd[i-1]).Close)
{
p.Color = BullishColor;
}
else
{
p.Color = BearishColor;
}
}
*/
g.DrawLine(p, (int)(xPos + offset), yPos1, (int)(xPos + offset), yPos2);
g.DrawLine(p, (int)(xPos - addAmount + offset), yPos3, (int)(xPos + offset), yPos3);
g.DrawLine(p, (int)(xPos + offset), yPos4, (int)(xPos + addAmount + offset), yPos4);
}
else if (this.Style == Styles.Filled)
{
g.DrawLine(p, xPos + (int)offset, yPos1, xPos + (int)offset, yPos2);
if (yPos3 > yPos4)
{
g.FillRectangle(bullishBrush, xPos - (int)addAmount + (int)offset, yPos4, (int)stickWidth, yPos3 - yPos4);
g.DrawRectangle(p, xPos - (int)addAmount + (int)offset, yPos4, (int)stickWidth, yPos3 - yPos4);
}
else if (yPos3 < yPos4)
{
g.FillRectangle(bearishBrush, xPos - (int)addAmount + (int)offset, yPos3, (int)stickWidth, yPos4 - yPos3);
g.DrawRectangle(p, xPos - (int)addAmount + (int)offset, yPos3, (int)stickWidth, yPos4 - yPos3);
}
else
{
g.DrawLine(p, xPos - (int)addAmount + (int)offset, yPos3, xPos - (int)addAmount + (int)stickWidth + (int)offset, yPos3);
}
}
}
}
}
/// <summary>
/// Does all the work in drawing grid lines.
/// </summary>
/// <param name="g">The graphics surface on which to render.</param>
/// <param name="axis">TODO</param>
/// <param name="orthogonalAxis">TODO</param>
/// <param name="a">the list of world values to draw grid lines at.</param>
/// <param name="horizontal">true if want horizontal lines, false otherwise.</param>
/// <param name="p">the pen to use to draw the grid lines.</param>
private void DrawGridLines(
Graphics g, PhysicalAxis axis, PhysicalAxis orthogonalAxis,
System.Collections.ArrayList a, bool horizontal, Pen p)
{
for (int i=0; i<a.Count; ++i)
{
PointF p1 = axis.WorldToPhysical((double)a[i], true);
PointF p2 = p1;
Point p3 = orthogonalAxis.PhysicalMax;
Point p4 = orthogonalAxis.PhysicalMin;
if (horizontal)
{
p1.Y = p4.Y;
p2.Y = p3.Y;
}
else
{
p1.X = p4.X;
p2.X = p3.X;
}
// note: casting all drawing was necessary for sane display. why?
g.DrawLine( p, (int)p1.X, (int)p1.Y, (int)p2.X, (int)p2.Y );
}
}
/// <summary>
///
/// </summary>
/// <param name="e"></param>
/// <param name="ctr"></param>
public override bool DoMouseDown(MouseEventArgs e, Control ctr)
{
// if the mouse is inside the plot area [the tick marks are here and part of the
// axis], then don't invoke drag.
xuzhenzhen.com.chart.PlotSurface2D ps = ((Windows.PlotSurface2D)ctr).Inner;
if (e.X > ps.PlotAreaBoundingBoxCache.Left && e.X < ps.PlotAreaBoundingBoxCache.Right &&
e.Y > ps.PlotAreaBoundingBoxCache.Top && e.Y < ps.PlotAreaBoundingBoxCache.Bottom)
{
return false;
}
if ((e.Button == MouseButtons.Left))
{
// see if hit with axis.
ArrayList objects = ps.HitTest(new Point(e.X, e.Y));
foreach (object o in objects)
{
if (o is xuzhenzhen.com.chart.Axis)
{
doing_ = true;
axis_ = (Axis)o;
PhysicalAxis[] physicalAxisList = new PhysicalAxis[] { ps.PhysicalXAxis1Cache, ps.PhysicalXAxis2Cache, ps.PhysicalYAxis1Cache, ps.PhysicalYAxis2Cache };
if (ps.PhysicalXAxis1Cache.Axis == axis_)
physicalAxis_ = ps.PhysicalXAxis1Cache;
else if (ps.PhysicalXAxis2Cache.Axis == axis_)
physicalAxis_ = ps.PhysicalXAxis2Cache;
else if (ps.PhysicalYAxis1Cache.Axis == axis_)
physicalAxis_ = ps.PhysicalYAxis1Cache;
else if (ps.PhysicalYAxis2Cache.Axis == axis_)
physicalAxis_ = ps.PhysicalYAxis2Cache;
lastPoint_ = startPoint_ = new Point(e.X, e.Y);
return false;
}
}
}
return false;
}
/// <summary>
/// Renders the histogram.
/// </summary>
/// <param name="g">The Graphics surface on which to draw</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
public void Draw(Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis)
{
SequenceAdapter data =
new SequenceAdapter(this.DataSource, this.DataMember, this.OrdinateData, this.AbscissaData);
float yoff;
for (int i = 0; i < data.Count; ++i)
{
// (1) determine the top left hand point of the bar (assuming not centered)
PointD p1 = data[i];
if (double.IsNaN(p1.X) || double.IsNaN(p1.Y))
{
continue;
}
// (2) determine the top right hand point of the bar (assuming not centered)
PointD p2;
if (i + 1 != data.Count)
{
p2 = data[i + 1];
if (double.IsNaN(p2.X) || double.IsNaN(p2.Y))
{
continue;
}
p2.Y = p1.Y;
}
else if (i != 0)
{
p2 = data[i - 1];
if (double.IsNaN(p2.X) || double.IsNaN(p2.Y))
{
continue;
}
double offset = p1.X - p2.X;
p2.X = p1.X + offset;
p2.Y = p1.Y;
}
else
{
double offset = 1.0f;
p2.X = p1.X + offset;
p2.Y = p1.Y;
}
// (3) now account for plots this may be stacked on top of.
HistogramPlot currentPlot = this;
yoff = 0.0f;
double yval = 0.0f;
while (currentPlot.isStacked_)
{
SequenceAdapter stackedToData = new SequenceAdapter(
currentPlot.stackedTo_.DataSource,
currentPlot.stackedTo_.DataMember,
currentPlot.stackedTo_.OrdinateData,
currentPlot.stackedTo_.AbscissaData);
yval += stackedToData[i].Y;
yoff = yAxis.WorldToPhysical(yval, false).Y;
p1.Y += stackedToData[i].Y;
p2.Y += stackedToData[i].Y;
currentPlot = currentPlot.stackedTo_;
}
// (4) now account for centering
if (center_)
{
double offset = (p2.X - p1.X) / 2.0f;
p1.X -= offset;
p2.X -= offset;
}
// (5) now account for BaseOffset (shift of bar sideways).
p1.X += baseOffset_;
p2.X += baseOffset_;
// (6) now get physical coordinates of top two points.
PointF xPos1 = xAxis.WorldToPhysical(p1.X, false);
PointF yPos1 = yAxis.WorldToPhysical(p1.Y, false);
PointF xPos2 = xAxis.WorldToPhysical(p2.X, false);
PointF yPos2 = yAxis.WorldToPhysical(p2.Y, false);
if (isStacked_)
{
currentPlot = this;
while (currentPlot.isStacked_)
{
currentPlot = currentPlot.stackedTo_;
}
this.baseWidth_ = currentPlot.baseWidth_;
}
float width = xPos2.X - xPos1.X;
float height;
if (isStacked_)
{
height = -yPos1.Y + yoff;
}
else
{
height = -yPos1.Y + yAxis.PhysicalMin.Y;
}
float xoff = (1.0f - baseWidth_) / 2.0f * width;
Rectangle r = new Rectangle((int)(xPos1.X + xoff), (int)yPos1.Y, (int)(width - 2 * xoff), (int)height);
if (this.Filled)
{
if (r.Height != 0 && r.Width != 0)
{
// room for optimization maybe.
g.FillRectangle(rectangleBrush_.Get(r), r);
}
}
g.DrawRectangle(Pen, r.X, r.Y, r.Width, r.Height);
}
}
/// <summary>
/// Updates the PlotSurface2D axes to compensate for the legend.
/// </summary>
/// <param name="pXAxis1">the bottom x axis</param>
/// <param name="pYAxis1">the left y axis</param>
/// <param name="pXAxis2">the top x axis</param>
/// <param name="pYAxis2">the right y axis</param>
/// <param name="plots">list of plots.</param>
/// <param name="scale">scale parameter (for text and other)</param>
/// <param name="padding">padding around plot within bounds.</param>
/// <param name="bounds">graphics surface bounds</param>
/// <param name="position">legend position</param>
public void UpdateAxesPositions(
PhysicalAxis pXAxis1,
PhysicalAxis pYAxis1,
PhysicalAxis pXAxis2,
PhysicalAxis pYAxis2,
ArrayList plots,
float scale, int padding, Rectangle bounds,
out Point position)
{
int leftIndent = 0;
int rightIndent = 0;
int bottomIndent = 0;
int topIndent = 0;
position = new Point(0,0);
// now determine if legend should change any of these (legend should be fully
// visible at all times), and draw legend.
Rectangle legendWidthHeight = this.GetBoundingBox( new Point(0,0), plots, scale );
if (legendWidthHeight.Width > bounds.Width)
{
legendWidthHeight.Width = bounds.Width;
}
// (1) calculate legend position.
// y
position.Y = this.yOffset_;
if ( this.xAttach_ == PlotSurface2D.XAxisPosition.Bottom )
{
position.Y += pYAxis1.PhysicalMin.Y;
if ( this.horizontalEdgePlacement_ == Legend.Placement.Inside )
{
position.Y -= legendWidthHeight.Height;
}
}
else
{
position.Y += pYAxis1.PhysicalMax.Y;
if ( this.horizontalEdgePlacement_ == Legend.Placement.Outside )
{
position.Y -= legendWidthHeight.Height;
}
}
// x
position.X = this.xOffset_;
if ( this.yAttach_ == PlotSurface2D.YAxisPosition.Left )
{
if ( this.verticalEdgePlacement_ == Legend.Placement.Outside )
{
position.X -= legendWidthHeight.Width;
}
position.X += pXAxis1.PhysicalMin.X;
}
else
{
if ( this.verticalEdgePlacement_ == Legend.Placement.Inside )
{
position.X -= legendWidthHeight.Width;
}
position.X += pXAxis1.PhysicalMax.X;
}
// determine update amounts for axes
if ( !this.neverShiftAxes_ )
{
if ( position.X < padding )
{
int changeAmount = -position.X + padding;
// only allow axes to move away from bounds.
if ( changeAmount > 0 )
{
leftIndent = changeAmount;
}
position.X += changeAmount;
}
if ( position.X + legendWidthHeight.Width > bounds.Right - padding )
{
int changeAmount = (position.X - bounds.Right + legendWidthHeight.Width + padding );
// only allow axes to move away from bounds.
if ( changeAmount > 0.0f )
{
rightIndent = changeAmount;
}
position.X -= changeAmount;
}
if ( position.Y < padding )
{
int changeAmount = -position.Y + padding;
// only allow axes to move away from bounds.
if ( changeAmount > 0.0f )
{
topIndent = changeAmount;
}
position.Y += changeAmount;
}
if ( position.Y + legendWidthHeight.Height > bounds.Bottom - padding )
{
int changeAmount = (position.Y - bounds.Bottom + legendWidthHeight.Height + padding );
// only allow axes to move away from bounds.
if ( changeAmount > 0.0f )
{
bottomIndent = changeAmount;
}
position.Y -= changeAmount;
}
// update axes.
pXAxis1.PhysicalMin = new Point( pXAxis1.PhysicalMin.X + leftIndent, pXAxis1.PhysicalMin.Y - bottomIndent );
pXAxis1.PhysicalMax = new Point( pXAxis1.PhysicalMax.X - rightIndent, pXAxis1.PhysicalMax.Y - bottomIndent );
pYAxis1.PhysicalMin = new Point( pYAxis1.PhysicalMin.X + leftIndent, pYAxis1.PhysicalMin.Y - bottomIndent );
pYAxis1.PhysicalMax = new Point( pYAxis1.PhysicalMax.X + leftIndent, pYAxis1.PhysicalMax.Y + topIndent );
pXAxis2.PhysicalMin = new Point( pXAxis2.PhysicalMin.X + leftIndent, pXAxis2.PhysicalMin.Y + topIndent );
pXAxis2.PhysicalMax = new Point( pXAxis2.PhysicalMax.X - rightIndent, pXAxis2.PhysicalMax.Y + topIndent );
pYAxis2.PhysicalMin = new Point( pYAxis2.PhysicalMin.X - rightIndent, pYAxis2.PhysicalMin.Y - bottomIndent );
pYAxis2.PhysicalMax = new Point( pYAxis2.PhysicalMax.X - rightIndent, pYAxis2.PhysicalMax.Y + topIndent );
}
}
/// <summary>
/// Renders the histogram.
/// </summary>
/// <param name="g">The Graphics surface on which to draw</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
public void Draw( Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis )
{
SequenceAdapter data =
new SequenceAdapter( this.DataSource, this.DataMember, this.OrdinateData, this.AbscissaData );
float yoff;
for ( int i=0; i<data.Count; ++i )
{
// (1) determine the top left hand point of the bar (assuming not centered)
PointD p1 = data[i];
if ( double.IsNaN(p1.X) || double.IsNaN(p1.Y) )
continue;
// (2) determine the top right hand point of the bar (assuming not centered)
PointD p2;
if (i+1 != data.Count)
{
p2 = data[i+1];
if ( double.IsNaN(p2.X) || double.IsNaN(p2.Y) )
continue;
p2.Y = p1.Y;
}
else if (i != 0)
{
p2 = data[i-1];
if ( double.IsNaN(p2.X) || double.IsNaN(p2.Y) )
continue;
double offset = p1.X - p2.X;
p2.X = p1.X + offset;
p2.Y = p1.Y;
}
else
{
double offset = 1.0f;
p2.X = p1.X + offset;
p2.Y = p1.Y;
}
// (3) now account for plots this may be stacked on top of.
HistogramPlot currentPlot = this;
yoff = 0.0f;
double yval = 0.0f;
while (currentPlot.isStacked_)
{
SequenceAdapter stackedToData = new SequenceAdapter(
currentPlot.stackedTo_.DataSource,
currentPlot.stackedTo_.DataMember,
currentPlot.stackedTo_.OrdinateData,
currentPlot.stackedTo_.AbscissaData );
yval += stackedToData[i].Y;
yoff = yAxis.WorldToPhysical( yval, false ).Y;
p1.Y += stackedToData[i].Y;
p2.Y += stackedToData[i].Y;
currentPlot = currentPlot.stackedTo_;
}
// (4) now account for centering
if ( center_ )
{
double offset = ( p2.X - p1.X ) / 2.0f;
p1.X -= offset;
p2.X -= offset;
}
// (5) now account for BaseOffset (shift of bar sideways).
p1.X += baseOffset_;
p2.X += baseOffset_;
// (6) now get physical coordinates of top two points.
PointF xPos1 = xAxis.WorldToPhysical( p1.X, false );
PointF yPos1 = yAxis.WorldToPhysical( p1.Y, false );
PointF xPos2 = xAxis.WorldToPhysical( p2.X, false );
PointF yPos2 = yAxis.WorldToPhysical( p2.Y, false );
if (isStacked_)
{
currentPlot = this;
while (currentPlot.isStacked_)
{
currentPlot = currentPlot.stackedTo_;
}
this.baseWidth_ = currentPlot.baseWidth_;
}
float width = xPos2.X - xPos1.X;
float height;
if (isStacked_)
{
height = -yPos1.Y+yoff;
}
else
{
height = -yPos1.Y+yAxis.PhysicalMin.Y;
}
float xoff = (1.0f - baseWidth_)/2.0f*width;
Rectangle r = new Rectangle( (int)(xPos1.X+xoff), (int)yPos1.Y, (int)(width-2*xoff), (int)height );
if (this.Filled)
{
if (r.Height != 0 && r.Width != 0)
{
// room for optimization maybe.
g.FillRectangle( rectangleBrush_.Get(r), r );
}
}
g.DrawRectangle( Pen, r.X, r.Y, r.Width, r.Height );
}
}
private void DeterminePhysicalAxesToDraw( Rectangle bounds,
Axis xAxis1, Axis xAxis2, Axis yAxis1, Axis yAxis2,
out PhysicalAxis pXAxis1, out PhysicalAxis pXAxis2,
out PhysicalAxis pYAxis1, out PhysicalAxis pYAxis2)
{
System.Drawing.Rectangle cb = bounds;
pXAxis1 = new PhysicalAxis( xAxis1,
new Point( cb.Left, cb.Bottom ), new Point( cb.Right, cb.Bottom ) );
pYAxis1 = new PhysicalAxis( yAxis1,
new Point( cb.Left, cb.Bottom ), new Point( cb.Left, cb.Top ) );
pXAxis2 = new PhysicalAxis( xAxis2,
new Point( cb.Left, cb.Top), new Point( cb.Right, cb.Top) );
pYAxis2 = new PhysicalAxis( yAxis2,
new Point( cb.Right, cb.Bottom ), new Point( cb.Right, cb.Top ) );
int bottomIndent = padding_;
if (!pXAxis1.Axis.Hidden)
{
// evaluate its bounding box
Rectangle bb = pXAxis1.GetBoundingBox();
// finally determine its indentation from the bottom
bottomIndent = bottomIndent + bb.Bottom - cb.Bottom;
}
int leftIndent = padding_;
if (!pYAxis1.Axis.Hidden)
{
// evaluate its bounding box
Rectangle bb = pYAxis1.GetBoundingBox();
// finally determine its indentation from the left
leftIndent = leftIndent - bb.Left + cb.Left;
}
int topIndent = padding_;
float scale = this.DetermineScaleFactor( bounds.Width, bounds.Height );
int titleHeight;
Graphics g = Graphics.FromImage(new System.Drawing.Bitmap(20, 20));
SizeF size = g.MeasureString("Ðì", titleFont_);
if (this.AutoScaleTitle)
{
titleHeight = (int)size.Height;
}
else
{
titleHeight = (int)size.Height;
}
//count number of new lines in title.
int nlCount = 0;
for (int i=0; i<title_.Length; ++i)
{
if (title_[i] == '\n')
nlCount += 1;
}
titleHeight = (int)( ((float)nlCount*0.75 + 1.0f) * (float)titleHeight);
if (!pXAxis2.Axis.Hidden)
{
// evaluate its bounding box
Rectangle bb = pXAxis2.GetBoundingBox();
topIndent = topIndent - bb.Top + cb.Top;
// finally determine its indentation from the top
// correct top indendation to take into account plot title
if (title_ != "" )
{
topIndent += (int)(titleHeight * 1.3f);
}
}
int rightIndent = padding_;
if (!pYAxis2.Axis.Hidden)
{
// evaluate its bounding box
Rectangle bb = pYAxis2.GetBoundingBox();
// finally determine its indentation from the right
rightIndent = (int)(rightIndent + bb.Right-cb.Right);
}
// now we have all the default calculated positions and we can proceed to
// "move" the axes to their right places
// primary axes (bottom, left)
pXAxis1.PhysicalMin = new Point( cb.Left+leftIndent, cb.Bottom-bottomIndent );
pXAxis1.PhysicalMax = new Point( cb.Right-rightIndent, cb.Bottom-bottomIndent );
pYAxis1.PhysicalMin = new Point( cb.Left+leftIndent, cb.Bottom-bottomIndent );
pYAxis1.PhysicalMax = new Point( cb.Left+leftIndent, cb.Top+topIndent );
// secondary axes (top, right)
pXAxis2.PhysicalMin = new Point( cb.Left+leftIndent, cb.Top+topIndent );
pXAxis2.PhysicalMax = new Point( cb.Right-rightIndent, cb.Top+topIndent );
pYAxis2.PhysicalMin = new Point( cb.Right-rightIndent, cb.Bottom-bottomIndent );
pYAxis2.PhysicalMax = new Point( cb.Right-rightIndent, cb.Top+topIndent );
}
private void Init()
{
drawables_ = new ArrayList();
xAxisPositions_ = new ArrayList();
yAxisPositions_ = new ArrayList();
zPositions_ = new ArrayList();
ordering_ = new SortedList();
TitleFont = new Font(FontFamily.GenericSerif, 10, FontStyle.Regular);
padding_ = 10;
title_ = "";
autoScaleTitle_ = false;
autoScaleAutoGeneratedAxes_ = false;
xAxis1_ = null;
xAxis2_ = null;
yAxis1_ = null;
yAxis2_ = null;
pXAxis1Cache_ = null;
pYAxis1Cache_ = null;
pXAxis2Cache_ = null;
pYAxis2Cache_ = null;
titleBrush_ = new SolidBrush( Color.Black );
plotBackColor_ = Color.White;
this.legend_ = null;
axesConstraints_ = new ArrayList();
}
/// <summary>
/// Draw the the PlotSurface2D and all contents [axes, drawables, and legend] on the
/// supplied graphics surface.
/// </summary>
/// <param name="g">The graphics surface on which to draw.</param>
/// <param name="bounds">A bounding box on this surface that denotes the area on the
/// surface to confine drawing to.</param>
public void Draw( Graphics g, Rectangle bounds )
{
// determine font sizes and tick scale factor.
float scale = DetermineScaleFactor( bounds.Width, bounds.Height );
// if there is nothing to plot, return.
if ( drawables_.Count == 0 )
{
// draw title
float x_center = (bounds.Left + bounds.Right)/2.0f;
float y_center = (bounds.Top + bounds.Bottom)/2.0f;
Font scaled_font;
if (this.AutoScaleTitle)
{
scaled_font = Utils.ScaleFont( titleFont_, scale );
}
else
{
scaled_font = titleFont_;
}
g.DrawString( title_, scaled_font, this.titleBrush_, x_center,y_center);
return;
}
// determine the [non physical] axes to draw based on the axis properties set.
Axis xAxis1 = null;
Axis xAxis2 = null;
Axis yAxis1 = null;
Axis yAxis2 = null;
this.DetermineAxesToDraw( out xAxis1, out xAxis2, out yAxis1, out yAxis2 );
// apply scale factor to axes as desired.
if (xAxis1.AutoScaleTicks)
xAxis1.TickScale = scale;
if (xAxis1.AutoScaleText)
xAxis1.FontScale = scale;
if (yAxis1.AutoScaleTicks)
yAxis1.TickScale = scale;
if (yAxis1.AutoScaleText)
yAxis1.FontScale = scale;
if (xAxis2.AutoScaleTicks)
xAxis2.TickScale = scale;
if (xAxis2.AutoScaleText)
xAxis2.FontScale = scale;
if (yAxis2.AutoScaleTicks)
yAxis2.TickScale = scale;
if (yAxis2.AutoScaleText)
yAxis2.FontScale = scale;
// determine the default physical positioning of those axes.
PhysicalAxis pXAxis1 = null;
PhysicalAxis pYAxis1 = null;
PhysicalAxis pXAxis2 = null;
PhysicalAxis pYAxis2 = null;
this.DeterminePhysicalAxesToDraw(
bounds, xAxis1, xAxis2, yAxis1, yAxis2,
out pXAxis1, out pXAxis2, out pYAxis1, out pYAxis2 );
float oldXAxis2Height = pXAxis2.PhysicalMin.Y;
// Apply axes constraints
for (int i=0; i<axesConstraints_.Count; ++i)
{
((AxesConstraint)axesConstraints_[i]).ApplyConstraint(
pXAxis1, pYAxis1, pXAxis2, pYAxis2 );
}
/////////////////////////////////////////////////////////////////////////
// draw legend if have one.
// Note: this will update axes if necessary.
Point legendPosition = new Point(0,0);
if (this.legend_ != null)
{
legend_.UpdateAxesPositions(
pXAxis1, pYAxis1, pXAxis2, pYAxis2,
this.drawables_, scale, this.padding_, bounds,
out legendPosition );
}
float newXAxis2Height = pXAxis2.PhysicalMin.Y;
float titleExtraOffset = oldXAxis2Height - newXAxis2Height;
// now we are ready to define the bounding box for the plot area (to use in clipping
// operations.
plotAreaBoundingBoxCache_ = new Rectangle(
Math.Min( pXAxis1.PhysicalMin.X, pXAxis1.PhysicalMax.X ),
Math.Min( pYAxis1.PhysicalMax.Y, pYAxis1.PhysicalMin.Y ),
Math.Abs( pXAxis1.PhysicalMax.X - pXAxis1.PhysicalMin.X + 1 ),
Math.Abs( pYAxis1.PhysicalMin.Y - pYAxis1.PhysicalMax.Y + 1 )
);
bbXAxis1Cache_ = pXAxis1.GetBoundingBox();
bbXAxis2Cache_ = pXAxis2.GetBoundingBox();
bbYAxis1Cache_ = pYAxis1.GetBoundingBox();
bbYAxis2Cache_ = pYAxis2.GetBoundingBox();
// Fill in the background.
if ( this.plotBackColor_ != null )
{
g.FillRectangle(
new System.Drawing.SolidBrush( (Color)this.plotBackColor_ ),
(Rectangle)plotAreaBoundingBoxCache_ );
}
else if (this.plotBackBrush_ != null)
{
g.FillRectangle(
this.plotBackBrush_.Get( (Rectangle)plotAreaBoundingBoxCache_ ),
(Rectangle)plotAreaBoundingBoxCache_ );
}
else if (this.plotBackImage_ != null)
{
Image image = Utils.TiledImage(this.plotBackImage_, new Size(((Rectangle)plotAreaBoundingBoxCache_).Width, ((Rectangle)plotAreaBoundingBoxCache_).Height));
//g.DrawImage( Utils.TiledImage( this.plotBackImage_ , new Size( ((Rectangle)plotAreaBoundingBoxCache_).Width,((Rectangle)plotAreaBoundingBoxCache_).Height ) ), (Rectangle)plotAreaBoundingBoxCache_ );
g.DrawImage(image, (Rectangle)plotAreaBoundingBoxCache_, (Rectangle)plotAreaBoundingBoxCache_, GraphicsUnit.Pixel);
}
// draw title
float xt = (pXAxis2.PhysicalMax.X + pXAxis2.PhysicalMin.X)/2.0f;
float yt = bounds.Top + this.padding_ - titleExtraOffset;
Font scaledFont;
if (this.AutoScaleTitle)
{
scaledFont = Utils.ScaleFont( titleFont_, scale );
}
else
{
scaledFont = titleFont_;
}
g.DrawString( title_, scaledFont, this.titleBrush_,xt,yt);
//count number of new lines in title.
int nlCount = 0;
for (int i=0; i<title_.Length; ++i)
{
if (title_[i] == '\n')
nlCount += 1;
}
SizeF s = g.MeasureString(title_,scaledFont);
bbTitleCache_ = new Rectangle( (int)(xt-s.Width/2), (int)(yt), (int)(s.Width), (int)(s.Height)*(nlCount+1) );
bool legendDrawn = false;
for ( int i_o = 0; i_o < ordering_.Count; ++i_o )
{
int i = (int)ordering_.GetByIndex(i_o);
double zOrder = (double)ordering_.GetKey( i_o );
if (zOrder > this.legendZOrder_)
{
// draw legend.
if ( !legendDrawn && this.legend_ != null )
{
legend_.Draw( g, legendPosition, this.drawables_, scale );
legendDrawn = true;
}
}
IDrawable drawable = (IDrawable)drawables_[i];
XAxisPosition xap = (XAxisPosition)xAxisPositions_[i];
YAxisPosition yap = (YAxisPosition)yAxisPositions_[i];
PhysicalAxis drawXAxis;
PhysicalAxis drawYAxis;
if ( xap == XAxisPosition.Bottom )
{
drawXAxis = pXAxis1;
}
else
{
drawXAxis = pXAxis2;
}
if ( yap == YAxisPosition.Left )
{
drawYAxis = pYAxis1;
}
else
{
drawYAxis = pYAxis2;
}
// set the clipping region.. (necessary for zoom)
g.Clip = new Region((Rectangle)plotAreaBoundingBoxCache_);
// plot.
drawable.Draw( g, drawXAxis, drawYAxis );
// reset it..
g.ResetClip();
}
if ( !legendDrawn && this.legend_ != null )
{
legend_.Draw( g, legendPosition, this.drawables_, scale );
}
// cache the physical axes we used on this draw;
this.pXAxis1Cache_ = pXAxis1;
this.pYAxis1Cache_ = pYAxis1;
this.pXAxis2Cache_ = pXAxis2;
this.pYAxis2Cache_ = pYAxis2;
// now draw axes.
Rectangle axisBounds;
pXAxis1.Draw( g, out axisBounds );
pXAxis2.Draw( g, out axisBounds );
pYAxis1.Draw( g, out axisBounds );
pYAxis2.Draw( g, out axisBounds );
/*
#if DEBUG_BOUNDING_BOXES
g.DrawRectangle( new Pen(Color.Orange), (Rectangle) bbXAxis1Cache_ );
g.DrawRectangle( new Pen(Color.Orange), (Rectangle) bbXAxis2Cache_ );
g.DrawRectangle( new Pen(Color.Orange), (Rectangle) bbYAxis1Cache_ );
g.DrawRectangle( new Pen(Color.Orange), (Rectangle) bbYAxis2Cache_ );
g.DrawRectangle( new Pen(Color.Red,5.0F),(Rectangle) plotAreaBoundingBoxCache_);
//if(this.ShowLegend)g.DrawRectangle( new Pen(Color.Chocolate, 3.0F), (Rectangle) bbLegendCache_);
g.DrawRectangle( new Pen(Color.DeepPink,2.0F), (Rectangle) bbTitleCache_);
#endif*/
}
/// <summary>
/// Draws the line plot on a GDI+ surface against the provided x and y axes.
/// </summary>
/// <param name="g">The GDI+ surface on which to draw.</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
public void Draw( Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis )
{
SequenceAdapter dataTop =
new SequenceAdapter( this.DataSource, this.DataMember, this.OrdinateDataTop, this.AbscissaData );
SequenceAdapter dataBottom =
new SequenceAdapter( this.DataSource, this.DataMember, this.OrdinateDataBottom, this.AbscissaData );
ITransform2D t = Transform2D.GetTransformer( xAxis, yAxis );
for (int i=0; i<dataTop.Count; ++i)
{
Point physicalBottom = t.Transform( dataBottom[i] );
Point physicalTop = t.Transform( dataTop[i] );
if (physicalBottom != physicalTop)
{
Rectangle r = new Rectangle( (int)(physicalBottom.X - BarWidth/2), (int)physicalTop.Y,
(int)BarWidth, (int)(physicalBottom.Y - physicalTop.Y) );
g.FillRectangle( this.rectangleBrush_.Get(r), r );
g.DrawRectangle( borderPen_, r );
}
}
}
/// <summary>
/// Updates the PlotSurface2D axes to compensate for the legend.
/// </summary>
/// <param name="pXAxis1">the bottom x axis</param>
/// <param name="pYAxis1">the left y axis</param>
/// <param name="pXAxis2">the top x axis</param>
/// <param name="pYAxis2">the right y axis</param>
/// <param name="plots">list of plots.</param>
/// <param name="scale">scale parameter (for text and other)</param>
/// <param name="padding">padding around plot within bounds.</param>
/// <param name="bounds">graphics surface bounds</param>
/// <param name="position">legend position</param>
public void UpdateAxesPositions(
PhysicalAxis pXAxis1,
PhysicalAxis pYAxis1,
PhysicalAxis pXAxis2,
PhysicalAxis pYAxis2,
ArrayList plots,
float scale, int padding, Rectangle bounds,
out Point position)
{
int leftIndent = 0;
int rightIndent = 0;
int bottomIndent = 0;
int topIndent = 0;
position = new Point(0, 0);
// now determine if legend should change any of these (legend should be fully
// visible at all times), and draw legend.
Rectangle legendWidthHeight = this.GetBoundingBox(new Point(0, 0), plots, scale);
if (legendWidthHeight.Width > bounds.Width)
{
legendWidthHeight.Width = bounds.Width;
}
// (1) calculate legend position.
// y
position.Y = this.yOffset_;
if (this.xAttach_ == PlotSurface2D.XAxisPosition.Bottom)
{
position.Y += pYAxis1.PhysicalMin.Y;
if (this.horizontalEdgePlacement_ == Legend.Placement.Inside)
{
position.Y -= legendWidthHeight.Height;
}
}
else
{
position.Y += pYAxis1.PhysicalMax.Y;
if (this.horizontalEdgePlacement_ == Legend.Placement.Outside)
{
position.Y -= legendWidthHeight.Height;
}
}
// x
position.X = this.xOffset_;
if (this.yAttach_ == PlotSurface2D.YAxisPosition.Left)
{
if (this.verticalEdgePlacement_ == Legend.Placement.Outside)
{
position.X -= legendWidthHeight.Width;
}
position.X += pXAxis1.PhysicalMin.X;
}
else
{
if (this.verticalEdgePlacement_ == Legend.Placement.Inside)
{
position.X -= legendWidthHeight.Width;
}
position.X += pXAxis1.PhysicalMax.X;
}
// determine update amounts for axes
if (!this.neverShiftAxes_)
{
if (position.X < padding)
{
int changeAmount = -position.X + padding;
// only allow axes to move away from bounds.
if (changeAmount > 0)
{
leftIndent = changeAmount;
}
position.X += changeAmount;
}
if (position.X + legendWidthHeight.Width > bounds.Right - padding)
{
int changeAmount = (position.X - bounds.Right + legendWidthHeight.Width + padding);
// only allow axes to move away from bounds.
if (changeAmount > 0.0f)
{
rightIndent = changeAmount;
}
position.X -= changeAmount;
}
if (position.Y < padding)
{
int changeAmount = -position.Y + padding;
// only allow axes to move away from bounds.
if (changeAmount > 0.0f)
{
topIndent = changeAmount;
}
position.Y += changeAmount;
}
if (position.Y + legendWidthHeight.Height > bounds.Bottom - padding)
{
int changeAmount = (position.Y - bounds.Bottom + legendWidthHeight.Height + padding);
// only allow axes to move away from bounds.
if (changeAmount > 0.0f)
{
bottomIndent = changeAmount;
}
position.Y -= changeAmount;
}
// update axes.
pXAxis1.PhysicalMin = new Point(pXAxis1.PhysicalMin.X + leftIndent, pXAxis1.PhysicalMin.Y - bottomIndent);
pXAxis1.PhysicalMax = new Point(pXAxis1.PhysicalMax.X - rightIndent, pXAxis1.PhysicalMax.Y - bottomIndent);
pYAxis1.PhysicalMin = new Point(pYAxis1.PhysicalMin.X + leftIndent, pYAxis1.PhysicalMin.Y - bottomIndent);
pYAxis1.PhysicalMax = new Point(pYAxis1.PhysicalMax.X + leftIndent, pYAxis1.PhysicalMax.Y + topIndent);
pXAxis2.PhysicalMin = new Point(pXAxis2.PhysicalMin.X + leftIndent, pXAxis2.PhysicalMin.Y + topIndent);
pXAxis2.PhysicalMax = new Point(pXAxis2.PhysicalMax.X - rightIndent, pXAxis2.PhysicalMax.Y + topIndent);
pYAxis2.PhysicalMin = new Point(pYAxis2.PhysicalMin.X - rightIndent, pYAxis2.PhysicalMin.Y - bottomIndent);
pYAxis2.PhysicalMax = new Point(pYAxis2.PhysicalMax.X - rightIndent, pYAxis2.PhysicalMax.Y + topIndent);
}
}
/// <summary>
/// Applies the constraint to the axes. Must be overriden.
/// </summary>
/// <param name="pXAxis1">The bottom x-axis.</param>
/// <param name="pYAxis1">The left y-axis.</param>
/// <param name="pXAxis2">The top x-axis.</param>
/// <param name="pYAxis2">The right y-axis.</param>
public abstract void ApplyConstraint(
PhysicalAxis pXAxis1, PhysicalAxis pYAxis1,
PhysicalAxis pXAxis2, PhysicalAxis pYAxis2);
/// <summary>
/// Draws the arrow on a plot surface.
/// </summary>
/// <param name="g">graphics surface on which to draw</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
public void Draw( System.Drawing.Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis )
{
if (this.To.X > xAxis.Axis.WorldMax || this.To.X < xAxis.Axis.WorldMin)
return;
if (this.To.Y > yAxis.Axis.WorldMax || this.To.Y < yAxis.Axis.WorldMin)
return;
double angle = this.angle_;
if (this.angle_ < 0.0)
{
int mul = -(int)(this.angle_ / 360.0) + 2;
angle = angle_ + 360.0 * (double)mul;
}
double normAngle = (double)angle % 360.0; // angle in range 0 -> 360.
Point toPoint = new Point(
(int)xAxis.WorldToPhysical( to_.X, true ).X,
(int)yAxis.WorldToPhysical( to_.Y, true ).Y );
float xDir = (float)Math.Cos( normAngle * 2.0 * Math.PI / 360.0 );
float yDir = (float)Math.Sin( normAngle * 2.0 * Math.PI / 360.0 );
toPoint.X += (int)(xDir*headOffset_);
toPoint.Y += (int)(yDir*headOffset_);
float xOff = physicalLength_ * xDir;
float yOff = physicalLength_ * yDir;
Point fromPoint = new Point(
(int)(toPoint.X + xOff),
(int)(toPoint.Y + yOff) );
//g.DrawLine( pen_, toPoint, fromPoint );
g.DrawLine(pen_, toPoint.X, toPoint.Y, fromPoint.X, fromPoint.Y);
Point[] head = new Point[3];
head[0] = toPoint;
xOff = headSize_ * (float)Math.Cos( (normAngle-headAngle_/2.0f) * 2.0 * Math.PI / 360.0 );
yOff = headSize_ * (float)Math.Sin( (normAngle-headAngle_/2.0f) * 2.0 * Math.PI / 360.0 );
head[1] = new Point(
(int)(toPoint.X + xOff),
(int)(toPoint.Y + yOff) );
float xOff2 = headSize_ * (float)Math.Cos( (normAngle+headAngle_/2.0f) * 2.0 * Math.PI / 360.0 );
float yOff2 = headSize_ * (float)Math.Sin( (normAngle+headAngle_/2.0f) * 2.0 * Math.PI / 360.0 );
head[2] = new Point(
(int)(toPoint.X + xOff2),
(int)(toPoint.Y + yOff2) );
g.FillPolygon( arrowBrush_, head );
SizeF textSize = g.MeasureString( text_, font_ );
SizeF halfSize = new SizeF( textSize.Width / 2.0f, textSize.Height / 2.0f );
float quadrantSlideLength = halfSize.Width + halfSize.Height;
float quadrantF = (float)normAngle / 90.0f; // integer part gives quadrant.
int quadrant = (int)quadrantF; // quadrant in.
float prop = quadrantF - (float)quadrant; // proportion of way through this qadrant.
float dist = prop * quadrantSlideLength; // distance along quarter of bounds rectangle.
// now find the offset from the middle of the text box that the
// rear end of the arrow should end at (reverse this to get position
// of text box with respect to rear end of arrow).
//
// There is almost certainly an elgant way of doing this involving
// trig functions to get all the signs right, but I'm about ready to
// drop off to sleep at the moment, so this blatent method will have
// to do.
PointF offsetFromMiddle = new PointF( 0.0f, 0.0f );
switch (quadrant)
{
case 0:
if (dist > halfSize.Height)
{
dist -= halfSize.Height;
offsetFromMiddle = new PointF( -halfSize.Width + dist, halfSize.Height );
}
else
{
offsetFromMiddle = new PointF( -halfSize.Width, - dist );
}
break;
case 1:
if (dist > halfSize.Width)
{
dist -= halfSize.Width;
offsetFromMiddle = new PointF( halfSize.Width, halfSize.Height - dist );
}
else
{
offsetFromMiddle = new PointF( dist, halfSize.Height );
}
break;
case 2:
if (dist > halfSize.Height)
{
dist -= halfSize.Height;
offsetFromMiddle = new PointF( halfSize.Width - dist, -halfSize.Height );
}
else
{
offsetFromMiddle = new PointF( halfSize.Width, -dist );
}
break;
case 3:
if (dist > halfSize.Width)
{
dist -= halfSize.Width;
offsetFromMiddle = new PointF( -halfSize.Width, -halfSize.Height + dist );
}
else
{
offsetFromMiddle = new PointF( -dist, -halfSize.Height );
}
break;
default:
throw new NPlotException( "Programmer error." );
}
g.DrawString(
text_, font_, textBrush_,
(int)(fromPoint.X - halfSize.Width - offsetFromMiddle.X),
(int)(fromPoint.Y - halfSize.Height + offsetFromMiddle.Y) );
}
/// <summary>
/// Draws the step plot on a GDI+ surface against the provided x and y axes.
/// </summary>
/// <param name="g">The GDI+ surface on which to draw.</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
public virtual void Draw( Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis )
{
SequenceAdapter data =
new SequenceAdapter( this.DataSource, this.DataMember, this.OrdinateData, this.AbscissaData );
double leftCutoff = xAxis.PhysicalToWorld(xAxis.PhysicalMin, false);
double rightCutoff = xAxis.PhysicalToWorld(xAxis.PhysicalMax, false);
for (int i=0; i<data.Count; ++i)
{
PointD p1 = data[i];
if (Double.IsNaN(p1.X) || Double.IsNaN(p1.Y))
{
continue;
}
PointD p2;
PointD p3;
if (i+1 != data.Count)
{
p2 = data[i+1];
if (Double.IsNaN(p2.X) || Double.IsNaN(p2.Y))
{
continue;
}
p2.Y = p1.Y;
p3 = data[i+1];
}
else
{
// Check that we are not dealing with a DataSource of 1 point.
// This check is done here so it is only checked on the end
// condition and not for every point in the DataSource.
if (data.Count > 1)
{
p2 = data[i - 1];
}
else
{
// TODO: Once log4net is set up post a message to the user that a step-plot of 1 really does not make any sense.
p2 = p1;
}
double offset = p1.X - p2.X;
p2.X = p1.X + offset;
p2.Y = p1.Y;
p3 = p2;
}
if ( this.center_ )
{
double offset = ( p2.X - p1.X ) / 2.0f;
p1.X -= offset;
p2.X -= offset;
p3.X -= offset;
}
PointF xPos1 = xAxis.WorldToPhysical( p1.X, false );
PointF yPos1 = yAxis.WorldToPhysical( p1.Y, false );
PointF xPos2 = xAxis.WorldToPhysical( p2.X, false );
PointF yPos2 = yAxis.WorldToPhysical( p2.Y, false );
PointF xPos3 = xAxis.WorldToPhysical( p3.X, false );
PointF yPos3 = yAxis.WorldToPhysical( p3.Y, false );
// do horizontal clipping here, to speed up
if ((p1.X < leftCutoff || p1.X > rightCutoff ) &&
(p2.X < leftCutoff || p2.X > rightCutoff ) &&
(p3.X < leftCutoff || p3.X > rightCutoff ) )
{
continue;
}
if (!this.hideHorizontalSegments_)
{
if (scale_ != 1.0f)
{
float middle = (xPos2.X + xPos1.X) / 2.0f;
float width = xPos2.X - xPos1.X;
width *= this.scale_;
g.DrawLine( Pen, (int)(middle-width/2.0f), (int)yPos1.Y, (int)(middle+width/2.0f), (int)yPos2.Y );
}
else
{
g.DrawLine( Pen, (int)xPos1.X, (int)yPos1.Y, (int)xPos2.X, (int)yPos2.Y );
}
}
if (!this.hideVerticalSegments_)
{
g.DrawLine( Pen, (int)xPos2.X, (int)yPos2.Y, (int)xPos3.X, (int)yPos3.Y );
}
}
}
/// <summary>
/// Draws the horizontal line plot on a GDI+ surface against the provided x and y axes.
/// </summary>
/// <param name="g">The GDI+ surface on which to draw.</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
public void Draw(System.Drawing.Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis)
{
int xMin = xAxis.PhysicalMin.X;
int xMax = xAxis.PhysicalMax.X;
xMin += pixelIndent_;
xMax -= pixelIndent_;
float length = Math.Abs(xMax - xMin);
float lengthDiff = length - length*scale_;
float indentAmount = lengthDiff/2;
xMin += (int)indentAmount;
xMax -= (int)indentAmount;
int yPos = (int)yAxis.WorldToPhysical( value_, false ).Y;
g.DrawLine( pen_, xMin, yPos ,xMax, yPos );
Brush brush=new SolidBrush(Color.SlateBlue);
g.DrawString(""+(int)value_, new Font(FontFamily.GenericSerif, 8f, FontStyle.Regular), brush, xMax-20, yPos-6);
// todo: clip and proper logic for flipped axis min max.
}
/// <summary>
/// Draws the line plot on a GDI+ surface against the provided x and y axes.
/// </summary>
/// <param name="g">The GDI+ surface on which to draw.</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
/// <param name="drawShadow">If true draw the shadow for the line. If false, draw line.</param>
public void DrawLineOrShadow( Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis, bool drawShadow )
{
Pen shadowPen = null;
if (drawShadow)
{
shadowPen = (Pen)this.Pen.Clone();
shadowPen.Color = this.ShadowColor;
}
SequenceAdapter data =
new SequenceAdapter( this.DataSource, this.DataMember, this.OrdinateData, this.AbscissaData );
ITransform2D t = Transform2D.GetTransformer( xAxis, yAxis );
int numberPoints = data.Count;
if (data.Count == 0)
{
return;
}
// clipping is now handled assigning a clip region in the
// graphic object before this call
if (numberPoints == 1)
{
Point physical = t.Transform( data[0] );
if (drawShadow)
{
g.DrawLine( shadowPen,
(int)(physical.X - 0.5f + this.ShadowOffset.X),
physical.Y + this.ShadowOffset.Y,
(int)(physical.X + 0.5f + this.ShadowOffset.X),
physical.Y + this.ShadowOffset.Y );
}
else
{
g.DrawLine( Pen, (int)(physical.X-0.5f), physical.Y, (int)(physical.X+0.5f), physical.Y);
}
}
else
{
// prepare for clipping
double leftCutoff = xAxis.PhysicalToWorld(xAxis.PhysicalMin, false);
double rightCutoff = xAxis.PhysicalToWorld(xAxis.PhysicalMax, false);
if (leftCutoff > rightCutoff)
{
Utils.Swap(ref leftCutoff, ref rightCutoff);
}
if (drawShadow)
{
// correct cut-offs
double shadowCorrection =
xAxis.PhysicalToWorld(ShadowOffset, false) - xAxis.PhysicalToWorld(new Point(0,0), false);
leftCutoff -= shadowCorrection;
rightCutoff -= shadowCorrection;
}
for (int i = 1; i < numberPoints; ++i)
{
// check to see if any values null. If so, then continue.
double dx1 = data[i-1].X;
double dx2 = data[i].X;
double dy1 = data[i-1].Y;
double dy2 = data[i].Y;
if ( Double.IsNaN(dx1) || Double.IsNaN(dy1) ||
Double.IsNaN(dx2) || Double.IsNaN(dy2) )
{
continue;
}
// do horizontal clipping here, to speed up
if ((dx1 < leftCutoff || rightCutoff < dx1) &&
(dx2 < leftCutoff || rightCutoff < dx2))
{
continue;
}
// else draw line.
Point p1 = t.Transform( data[i-1] );
Point p2 = t.Transform( data[i] );
// when very far zoomed in, points can fall ontop of each other,
// and g.DrawLine throws an overflow exception
if (p1.Equals(p2))
continue;
if (drawShadow)
{
g.DrawLine( shadowPen,
p1.X + ShadowOffset.X,
p1.Y + ShadowOffset.Y,
p2.X + ShadowOffset.X,
p2.Y + ShadowOffset.Y );
}
else
{
g.DrawLine( Pen, p1.X, p1.Y, p2.X, p2.Y );
}
}
}
}
/// <summary>
/// Draws the arrow on a plot surface.
/// </summary>
/// <param name="g">graphics surface on which to draw</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
public void Draw(System.Drawing.Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis)
{
if (this.To.X > xAxis.Axis.WorldMax || this.To.X < xAxis.Axis.WorldMin)
{
return;
}
if (this.To.Y > yAxis.Axis.WorldMax || this.To.Y < yAxis.Axis.WorldMin)
{
return;
}
double angle = this.angle_;
if (this.angle_ < 0.0)
{
int mul = -(int)(this.angle_ / 360.0) + 2;
angle = angle_ + 360.0 * (double)mul;
}
double normAngle = (double)angle % 360.0; // angle in range 0 -> 360.
Point toPoint = new Point(
(int)xAxis.WorldToPhysical(to_.X, true).X,
(int)yAxis.WorldToPhysical(to_.Y, true).Y);
float xDir = (float)Math.Cos(normAngle * 2.0 * Math.PI / 360.0);
float yDir = (float)Math.Sin(normAngle * 2.0 * Math.PI / 360.0);
toPoint.X += (int)(xDir * headOffset_);
toPoint.Y += (int)(yDir * headOffset_);
float xOff = physicalLength_ * xDir;
float yOff = physicalLength_ * yDir;
Point fromPoint = new Point(
(int)(toPoint.X + xOff),
(int)(toPoint.Y + yOff));
//g.DrawLine( pen_, toPoint, fromPoint );
g.DrawLine(pen_, toPoint.X, toPoint.Y, fromPoint.X, fromPoint.Y);
Point[] head = new Point[3];
head[0] = toPoint;
xOff = headSize_ * (float)Math.Cos((normAngle - headAngle_ / 2.0f) * 2.0 * Math.PI / 360.0);
yOff = headSize_ * (float)Math.Sin((normAngle - headAngle_ / 2.0f) * 2.0 * Math.PI / 360.0);
head[1] = new Point(
(int)(toPoint.X + xOff),
(int)(toPoint.Y + yOff));
float xOff2 = headSize_ * (float)Math.Cos((normAngle + headAngle_ / 2.0f) * 2.0 * Math.PI / 360.0);
float yOff2 = headSize_ * (float)Math.Sin((normAngle + headAngle_ / 2.0f) * 2.0 * Math.PI / 360.0);
head[2] = new Point(
(int)(toPoint.X + xOff2),
(int)(toPoint.Y + yOff2));
g.FillPolygon(arrowBrush_, head);
SizeF textSize = g.MeasureString(text_, font_);
SizeF halfSize = new SizeF(textSize.Width / 2.0f, textSize.Height / 2.0f);
float quadrantSlideLength = halfSize.Width + halfSize.Height;
float quadrantF = (float)normAngle / 90.0f; // integer part gives quadrant.
int quadrant = (int)quadrantF; // quadrant in.
float prop = quadrantF - (float)quadrant; // proportion of way through this qadrant.
float dist = prop * quadrantSlideLength; // distance along quarter of bounds rectangle.
// now find the offset from the middle of the text box that the
// rear end of the arrow should end at (reverse this to get position
// of text box with respect to rear end of arrow).
//
// There is almost certainly an elgant way of doing this involving
// trig functions to get all the signs right, but I'm about ready to
// drop off to sleep at the moment, so this blatent method will have
// to do.
PointF offsetFromMiddle = new PointF(0.0f, 0.0f);
switch (quadrant)
{
case 0:
if (dist > halfSize.Height)
{
dist -= halfSize.Height;
offsetFromMiddle = new PointF(-halfSize.Width + dist, halfSize.Height);
}
else
{
offsetFromMiddle = new PointF(-halfSize.Width, -dist);
}
break;
case 1:
if (dist > halfSize.Width)
{
dist -= halfSize.Width;
offsetFromMiddle = new PointF(halfSize.Width, halfSize.Height - dist);
}
else
{
offsetFromMiddle = new PointF(dist, halfSize.Height);
}
break;
case 2:
if (dist > halfSize.Height)
{
dist -= halfSize.Height;
offsetFromMiddle = new PointF(halfSize.Width - dist, -halfSize.Height);
}
else
{
offsetFromMiddle = new PointF(halfSize.Width, -dist);
}
break;
case 3:
if (dist > halfSize.Width)
{
dist -= halfSize.Width;
offsetFromMiddle = new PointF(-halfSize.Width, -halfSize.Height + dist);
}
else
{
offsetFromMiddle = new PointF(-dist, -halfSize.Height);
}
break;
default:
throw new NPlotException("Programmer error.");
}
g.DrawString(
text_, font_, textBrush_,
(int)(fromPoint.X - halfSize.Width - offsetFromMiddle.X),
(int)(fromPoint.Y - halfSize.Height + offsetFromMiddle.Y));
}
/// <summary>
///
/// </summary>
/// <param name="e"></param>
/// <param name="ctr"></param>
public override bool DoMouseUp(MouseEventArgs e, Control ctr)
{
if (doing_)
{
doing_ = false;
axis_ = null;
physicalAxis_ = null;
lastPoint_ = new Point();
}
return false;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="xAxis">The x-axis to use for transforms</param>
/// <param name="yAxis">The y-axis to use for transforms</param>
public FastTransform2D( PhysicalAxis xAxis, PhysicalAxis yAxis )
{
xAxis_ = new PageAlignedPhysicalAxis( xAxis );
yAxis_ = new PageAlignedPhysicalAxis( yAxis );
}
/// <summary>
/// Draws the step plot on a GDI+ surface against the provided x and y axes.
/// </summary>
/// <param name="g">The GDI+ surface on which to draw.</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
public virtual void Draw(Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis)
{
SequenceAdapter data =
new SequenceAdapter(this.DataSource, this.DataMember, this.OrdinateData, this.AbscissaData);
double leftCutoff = xAxis.PhysicalToWorld(xAxis.PhysicalMin, false);
double rightCutoff = xAxis.PhysicalToWorld(xAxis.PhysicalMax, false);
for (int i = 0; i < data.Count; ++i)
{
PointD p1 = data[i];
if (Double.IsNaN(p1.X) || Double.IsNaN(p1.Y))
{
continue;
}
PointD p2;
PointD p3;
if (i + 1 != data.Count)
{
p2 = data[i + 1];
if (Double.IsNaN(p2.X) || Double.IsNaN(p2.Y))
{
continue;
}
p2.Y = p1.Y;
p3 = data[i + 1];
}
else
{
// Check that we are not dealing with a DataSource of 1 point.
// This check is done here so it is only checked on the end
// condition and not for every point in the DataSource.
if (data.Count > 1)
{
p2 = data[i - 1];
}
else
{
// TODO: Once log4net is set up post a message to the user that a step-plot of 1 really does not make any sense.
p2 = p1;
}
double offset = p1.X - p2.X;
p2.X = p1.X + offset;
p2.Y = p1.Y;
p3 = p2;
}
if (this.center_)
{
double offset = (p2.X - p1.X) / 2.0f;
p1.X -= offset;
p2.X -= offset;
p3.X -= offset;
}
PointF xPos1 = xAxis.WorldToPhysical(p1.X, false);
PointF yPos1 = yAxis.WorldToPhysical(p1.Y, false);
PointF xPos2 = xAxis.WorldToPhysical(p2.X, false);
PointF yPos2 = yAxis.WorldToPhysical(p2.Y, false);
PointF xPos3 = xAxis.WorldToPhysical(p3.X, false);
PointF yPos3 = yAxis.WorldToPhysical(p3.Y, false);
// do horizontal clipping here, to speed up
if ((p1.X < leftCutoff || p1.X > rightCutoff) &&
(p2.X < leftCutoff || p2.X > rightCutoff) &&
(p3.X < leftCutoff || p3.X > rightCutoff))
{
continue;
}
if (!this.hideHorizontalSegments_)
{
if (scale_ != 1.0f)
{
float middle = (xPos2.X + xPos1.X) / 2.0f;
float width = xPos2.X - xPos1.X;
width *= this.scale_;
g.DrawLine(Pen, (int)(middle - width / 2.0f), (int)yPos1.Y, (int)(middle + width / 2.0f), (int)yPos2.Y);
}
else
{
g.DrawLine(Pen, (int)xPos1.X, (int)yPos1.Y, (int)xPos2.X, (int)yPos2.Y);
}
}
if (!this.hideVerticalSegments_)
{
g.DrawLine(Pen, (int)xPos2.X, (int)yPos2.Y, (int)xPos3.X, (int)yPos3.Y);
}
}
}
private void DeterminePhysicalAxesToDraw(Rectangle bounds,
Axis xAxis1, Axis xAxis2, Axis yAxis1, Axis yAxis2,
out PhysicalAxis pXAxis1, out PhysicalAxis pXAxis2,
out PhysicalAxis pYAxis1, out PhysicalAxis pYAxis2)
{
System.Drawing.Rectangle cb = bounds;
pXAxis1 = new PhysicalAxis(xAxis1,
new Point(cb.Left, cb.Bottom), new Point(cb.Right, cb.Bottom));
pYAxis1 = new PhysicalAxis(yAxis1,
new Point(cb.Left, cb.Bottom), new Point(cb.Left, cb.Top));
pXAxis2 = new PhysicalAxis(xAxis2,
new Point(cb.Left, cb.Top), new Point(cb.Right, cb.Top));
pYAxis2 = new PhysicalAxis(yAxis2,
new Point(cb.Right, cb.Bottom), new Point(cb.Right, cb.Top));
int bottomIndent = padding_;
if (!pXAxis1.Axis.Hidden)
{
// evaluate its bounding box
Rectangle bb = pXAxis1.GetBoundingBox();
// finally determine its indentation from the bottom
bottomIndent = bottomIndent + bb.Bottom - cb.Bottom;
}
int leftIndent = padding_;
if (!pYAxis1.Axis.Hidden)
{
// evaluate its bounding box
Rectangle bb = pYAxis1.GetBoundingBox();
// finally determine its indentation from the left
leftIndent = leftIndent - bb.Left + cb.Left;
}
int topIndent = padding_;
float scale = this.DetermineScaleFactor(bounds.Width, bounds.Height);
int titleHeight;
Graphics g = Graphics.FromImage(new System.Drawing.Bitmap(20, 20));
SizeF size = g.MeasureString("Ðì", titleFont_);
if (this.AutoScaleTitle)
{
titleHeight = (int)size.Height;
}
else
{
titleHeight = (int)size.Height;
}
//count number of new lines in title.
int nlCount = 0;
for (int i = 0; i < title_.Length; ++i)
{
if (title_[i] == '\n')
{
nlCount += 1;
}
}
titleHeight = (int)(((float)nlCount * 0.75 + 1.0f) * (float)titleHeight);
if (!pXAxis2.Axis.Hidden)
{
// evaluate its bounding box
Rectangle bb = pXAxis2.GetBoundingBox();
topIndent = topIndent - bb.Top + cb.Top;
// finally determine its indentation from the top
// correct top indendation to take into account plot title
if (title_ != "")
{
topIndent += (int)(titleHeight * 1.3f);
}
}
int rightIndent = padding_;
if (!pYAxis2.Axis.Hidden)
{
// evaluate its bounding box
Rectangle bb = pYAxis2.GetBoundingBox();
// finally determine its indentation from the right
rightIndent = (int)(rightIndent + bb.Right - cb.Right);
}
// now we have all the default calculated positions and we can proceed to
// "move" the axes to their right places
// primary axes (bottom, left)
pXAxis1.PhysicalMin = new Point(cb.Left + leftIndent, cb.Bottom - bottomIndent);
pXAxis1.PhysicalMax = new Point(cb.Right - rightIndent, cb.Bottom - bottomIndent);
pYAxis1.PhysicalMin = new Point(cb.Left + leftIndent, cb.Bottom - bottomIndent);
pYAxis1.PhysicalMax = new Point(cb.Left + leftIndent, cb.Top + topIndent);
// secondary axes (top, right)
pXAxis2.PhysicalMin = new Point(cb.Left + leftIndent, cb.Top + topIndent);
pXAxis2.PhysicalMax = new Point(cb.Right - rightIndent, cb.Top + topIndent);
pYAxis2.PhysicalMin = new Point(cb.Right - rightIndent, cb.Bottom - bottomIndent);
pYAxis2.PhysicalMax = new Point(cb.Right - rightIndent, cb.Top + topIndent);
}
/// <summary>
/// Calculates the physical (not world) separation between abscissa values.
/// </summary>
/// <param name="cd">Candle adapter containing data</param>
/// <param name="xAxis">Physical x axis the data is plotted against.</param>
/// <returns>physical separation between abscissa values.</returns>
private static float CalculatePhysicalSeparation( CandleDataAdapter cd, PhysicalAxis xAxis )
{
if (cd.Count > 1)
{
int xPos1 = (int)(xAxis.WorldToPhysical( ((PointOLHC)cd[0]).X, false )).X;
int xPos2 = (int)(xAxis.WorldToPhysical( ((PointOLHC)cd[1]).X, false )).X;
int minDist = xPos2 - xPos1;
if (cd.Count > 2)
{ // to be pretty sure we get the smallest gap.
int xPos3 = (int)(xAxis.WorldToPhysical(((PointOLHC)cd[2]).X, false)).X;
if (xPos3 - xPos2 < minDist) minDist = xPos3 - xPos2;
if (cd.Count > 3)
{
int xPos4 = (int)(xAxis.WorldToPhysical(((PointOLHC)cd[3]).X, false)).X;
if (xPos4 - xPos3 < minDist) minDist = xPos4 - xPos3;
}
}
return minDist;
}
return 0.0f;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="xAxis">The x-axis to use for transforms</param>
/// <param name="yAxis">The y-axis to use for transforms</param>
public DefaultTransform2D( PhysicalAxis xAxis, PhysicalAxis yAxis )
{
xAxis_ = xAxis;
yAxis_ = yAxis;
}
/// <summary>
/// Draws the line plot on a GDI+ surface against the provided x and y axes.
/// </summary>
/// <param name="g">The GDI+ surface on which to draw.</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
/// <param name="drawShadow">If true draw the shadow for the line. If false, draw line.</param>
public void DrawLineOrShadow(Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis, bool drawShadow)
{
Pen shadowPen = null;
if (drawShadow)
{
shadowPen = (Pen)this.Pen.Clone();
shadowPen.Color = this.ShadowColor;
}
SequenceAdapter data =
new SequenceAdapter(this.DataSource, this.DataMember, this.OrdinateData, this.AbscissaData);
ITransform2D t = Transform2D.GetTransformer(xAxis, yAxis);
int numberPoints = data.Count;
if (data.Count == 0)
{
return;
}
// clipping is now handled assigning a clip region in the
// graphic object before this call
if (numberPoints == 1)
{
Point physical = t.Transform(data[0]);
if (drawShadow)
{
g.DrawLine(shadowPen,
(int)(physical.X - 0.5f + this.ShadowOffset.X),
physical.Y + this.ShadowOffset.Y,
(int)(physical.X + 0.5f + this.ShadowOffset.X),
physical.Y + this.ShadowOffset.Y);
}
else
{
g.DrawLine(Pen, (int)(physical.X - 0.5f), physical.Y, (int)(physical.X + 0.5f), physical.Y);
}
}
else
{
// prepare for clipping
double leftCutoff = xAxis.PhysicalToWorld(xAxis.PhysicalMin, false);
double rightCutoff = xAxis.PhysicalToWorld(xAxis.PhysicalMax, false);
if (leftCutoff > rightCutoff)
{
Utils.Swap(ref leftCutoff, ref rightCutoff);
}
if (drawShadow)
{
// correct cut-offs
double shadowCorrection =
xAxis.PhysicalToWorld(ShadowOffset, false) - xAxis.PhysicalToWorld(new Point(0, 0), false);
leftCutoff -= shadowCorrection;
rightCutoff -= shadowCorrection;
}
for (int i = 1; i < numberPoints; ++i)
{
// check to see if any values null. If so, then continue.
double dx1 = data[i - 1].X;
double dx2 = data[i].X;
double dy1 = data[i - 1].Y;
double dy2 = data[i].Y;
if (Double.IsNaN(dx1) || Double.IsNaN(dy1) ||
Double.IsNaN(dx2) || Double.IsNaN(dy2))
{
continue;
}
// do horizontal clipping here, to speed up
if ((dx1 < leftCutoff || rightCutoff < dx1) &&
(dx2 < leftCutoff || rightCutoff < dx2))
{
continue;
}
// else draw line.
Point p1 = t.Transform(data[i - 1]);
Point p2 = t.Transform(data[i]);
// when very far zoomed in, points can fall ontop of each other,
// and g.DrawLine throws an overflow exception
if (p1.Equals(p2))
{
continue;
}
if (drawShadow)
{
g.DrawLine(shadowPen,
p1.X + ShadowOffset.X,
p1.Y + ShadowOffset.Y,
p2.X + ShadowOffset.X,
p2.Y + ShadowOffset.Y);
}
else
{
g.DrawLine(Pen, p1.X, p1.Y, p2.X, p2.Y);
}
}
}
}
/// <summary>
/// Draws the plot on a GDI+ surface against the provided x and y axes.
/// </summary>
/// <param name="g">The GDI+ surface on which to draw.</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
public override void Draw( Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis )
{
SequenceAdapter data =
new SequenceAdapter( this.DataSource, this.DataMember, this.OrdinateData, this.AbscissaData );
TextDataAdapter textData =
new TextDataAdapter( this.DataSource, this.DataMember, this.TextData );
// first plot the marker
// we can do this cast, since the constructor accepts only this type!
for (int i=0; i<data.Count; ++i)
{
try
{
PointD pt = data[i];
if ( !Double.IsNaN(pt.X) && !Double.IsNaN(pt.Y) )
{
PointF xPos = xAxis.WorldToPhysical( pt.X, false);
PointF yPos = yAxis.WorldToPhysical( pt.Y, false);
Marker.Draw( g, (int)xPos.X, (int)yPos.Y );
if ( textData[i] != "" )
{
SizeF size = g.MeasureString( textData[i], this.Font );
Brush brush = new SolidBrush(Color.Black);
switch (labelTextPosition_)
{
case LabelPositions.Above:
g.DrawString( textData[i], font_, brush, xPos.X-size.Width/2,yPos.Y-size.Height-Marker.Size*2/3);
break;
case LabelPositions.Below:
g.DrawString(textData[i], font_, brush, xPos.X - size.Width / 2, yPos.Y + Marker.Size * 2 / 3);
break;
case LabelPositions.Left:
g.DrawString(textData[i], font_, brush, xPos.X - size.Width - Marker.Size * 2 / 3, yPos.Y - size.Height / 2);
break;
case LabelPositions.Right:
g.DrawString(textData[i], font_, brush, xPos.X + Marker.Size * 2 / 3, yPos.Y - size.Height / 2);
break;
}
}
}
}
catch
{
throw new NPlotException("Error in TextPlot.Draw");
}
}
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="xAxis">The x-axis to use for transforms</param>
/// <param name="yAxis">The y-axis to use for transforms</param>
public DefaultTransform2D(PhysicalAxis xAxis, PhysicalAxis yAxis)
{
xAxis_ = xAxis;
yAxis_ = yAxis;
}
/// <summary>
/// Applies the constraint to the axes. Must be overriden.
/// </summary>
/// <param name="pXAxis1">The bottom x-axis.</param>
/// <param name="pYAxis1">The left y-axis.</param>
/// <param name="pXAxis2">The top x-axis.</param>
/// <param name="pYAxis2">The right y-axis.</param>
public abstract void ApplyConstraint(
PhysicalAxis pXAxis1, PhysicalAxis pYAxis1,
PhysicalAxis pXAxis2, PhysicalAxis pYAxis2);
/// <summary>
/// Applies the constraint to the axes.
/// </summary>
/// <param name="pXAxis1">The bottom x-axis.</param>
/// <param name="pYAxis1">The left y-axis.</param>
/// <param name="pXAxis2">The top x-axis.</param>
/// <param name="pYAxis2">The right y-axis.</param>
public override void ApplyConstraint(
PhysicalAxis pXAxis1, PhysicalAxis pYAxis1,
PhysicalAxis pXAxis2, PhysicalAxis pYAxis2)
{
double xWorldRange = Math.Abs(pXAxis1.Axis.WorldMax - pXAxis1.Axis.WorldMin);
double xPhysicalRange = Math.Abs(pXAxis1.PhysicalMax.X - pXAxis1.PhysicalMin.X);
double xDirPixelSize = xWorldRange / xPhysicalRange;
double yWorldRange = Math.Abs(pYAxis1.Axis.WorldMax - pYAxis1.Axis.WorldMin);
double yPhysicalRange = Math.Abs(pYAxis1.PhysicalMax.Y - pYAxis1.PhysicalMin.Y);
double yDirPixelSize = yWorldRange / yPhysicalRange;
double currentAspectRatio = yDirPixelSize / xDirPixelSize;
// we want to change the current aspect ratio to be the desired.
// to do this, we may only add the world pixel lengths.
if (this.a_ > currentAspectRatio)
{
// want to increase aspect ratio. Therefore, want to add some amount
// to yDirPixelSize (numerator).
double toAdd = (this.a_ - currentAspectRatio) * xDirPixelSize;
int newHeight =
(int)(Math.Abs(pYAxis1.Axis.WorldMax - pYAxis1.Axis.WorldMin) / (yDirPixelSize + toAdd));
int changeInHeight = (int)yPhysicalRange - newHeight;
int changeBottom = changeInHeight / 2;
int changeTop = changeInHeight / 2;
if (this.holdFixedX_ != null)
{
if ((PlotSurface2D.XAxisPosition) this.holdFixedX_ == PlotSurface2D.XAxisPosition.Bottom)
{
changeBottom = 0;
changeTop = changeInHeight;
}
else
{
changeBottom = changeInHeight;
changeTop = 0;
}
}
pYAxis1.PhysicalMin = new Point(pYAxis1.PhysicalMin.X, pYAxis1.PhysicalMin.Y - changeBottom);
pYAxis1.PhysicalMax = new Point(pYAxis1.PhysicalMax.X, pYAxis1.PhysicalMax.Y + changeTop);
pYAxis2.PhysicalMin = new Point(pYAxis2.PhysicalMin.X, pYAxis2.PhysicalMin.Y - changeBottom);
pYAxis2.PhysicalMax = new Point(pYAxis2.PhysicalMax.X, pYAxis2.PhysicalMax.Y + changeTop);
pXAxis1.PhysicalMin = new Point(pXAxis1.PhysicalMin.X, pXAxis1.PhysicalMin.Y - changeBottom);
pXAxis1.PhysicalMax = new Point(pXAxis1.PhysicalMax.X, pXAxis1.PhysicalMax.Y - changeBottom);
pXAxis2.PhysicalMin = new Point(pXAxis2.PhysicalMin.X, pXAxis2.PhysicalMin.Y + changeTop);
pXAxis2.PhysicalMax = new Point(pXAxis2.PhysicalMax.X, pXAxis2.PhysicalMax.Y + changeTop);
}
else
{
// want to decrease aspect ratio. Therefore, want to add some amount
// to xDirPixelSize (denominator).
double toAdd = yDirPixelSize / this.a_ - xDirPixelSize;
int newWidth =
(int)(Math.Abs(pXAxis1.Axis.WorldMax - pXAxis1.Axis.WorldMin) / (xDirPixelSize + toAdd));
int changeInWidth = (int)xPhysicalRange - newWidth;
int changeLeft = changeInWidth / 2;
int changeRight = changeInWidth / 2;
if (this.holdFixedY_ != null)
{
if ((PlotSurface2D.YAxisPosition) this.holdFixedY_ == PlotSurface2D.YAxisPosition.Left)
{
changeLeft = 0;
changeRight = changeInWidth;
}
else
{
changeLeft = changeInWidth;
changeRight = 0;
}
}
pXAxis1.PhysicalMin = new Point(pXAxis1.PhysicalMin.X + changeLeft, pXAxis1.PhysicalMin.Y);
pXAxis1.PhysicalMax = new Point(pXAxis1.PhysicalMax.X - changeRight, pXAxis1.PhysicalMax.Y);
pXAxis2.PhysicalMin = new Point(pXAxis2.PhysicalMin.X + changeLeft, pXAxis2.PhysicalMin.Y);
pXAxis2.PhysicalMax = new Point(pXAxis2.PhysicalMax.X - changeRight, pXAxis2.PhysicalMax.Y);
pYAxis1.PhysicalMin = new Point(pYAxis1.PhysicalMin.X + changeLeft, pYAxis1.PhysicalMin.Y);
pYAxis1.PhysicalMax = new Point(pYAxis1.PhysicalMax.X + changeLeft, pYAxis1.PhysicalMax.Y);
pYAxis2.PhysicalMin = new Point(pYAxis2.PhysicalMin.X - changeRight, pYAxis2.PhysicalMin.Y);
pYAxis2.PhysicalMax = new Point(pYAxis2.PhysicalMax.X - changeRight, pYAxis2.PhysicalMax.Y);
}
}
/// <summary>
/// Applies the constraint to the axes.
/// </summary>
/// <param name="pXAxis1">The bottom x-axis.</param>
/// <param name="pYAxis1">The left y-axis.</param>
/// <param name="pXAxis2">The top x-axis.</param>
/// <param name="pYAxis2">The right y-axis.</param>
public override void ApplyConstraint(
PhysicalAxis pXAxis1, PhysicalAxis pYAxis1,
PhysicalAxis pXAxis2, PhysicalAxis pYAxis2)
{
int desiredLength = (int)(pXAxis1.Axis.WorldLength / (double)this.pWorldLength_);
int currentLength = pXAxis1.PhysicalLength;
int delta = currentLength - desiredLength;
int changeLeft = delta / 2;
int changeRight = delta / 2;
if (this.holdFixedY_ != null)
{
if ( (PlotSurface2D.YAxisPosition)this.holdFixedY_ == PlotSurface2D.YAxisPosition.Left )
{
changeLeft = 0;
changeRight = delta;
}
else
{
changeLeft = delta;
changeRight = 0;
}
}
pXAxis1.PhysicalMin = new Point( pXAxis1.PhysicalMin.X+changeLeft, pXAxis1.PhysicalMin.Y );
pXAxis1.PhysicalMax = new Point( pXAxis1.PhysicalMax.X-changeRight, pXAxis1.PhysicalMax.Y );
pXAxis2.PhysicalMin = new Point( pXAxis2.PhysicalMin.X+changeLeft, pXAxis2.PhysicalMin.Y );
pXAxis2.PhysicalMax = new Point( pXAxis2.PhysicalMax.X-changeRight, pXAxis2.PhysicalMax.Y );
pYAxis1.PhysicalMin = new Point( pYAxis1.PhysicalMin.X+changeLeft, pYAxis1.PhysicalMin.Y );
pYAxis1.PhysicalMax = new Point( pYAxis1.PhysicalMax.X+changeLeft, pYAxis1.PhysicalMax.Y );
pYAxis2.PhysicalMin = new Point( pYAxis2.PhysicalMin.X-changeRight, pYAxis2.PhysicalMin.Y );
pYAxis2.PhysicalMax = new Point( pYAxis2.PhysicalMax.X-changeRight, pYAxis2.PhysicalMax.Y );
}
/// <summary>
/// Draws the candle plot on a GDI+ surface agains the provided x and y axes.
/// </summary>
/// <param name="g">The GDI+ surface on which to draw.</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
public void Draw(Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis)
{
CandleDataAdapter cd = new CandleDataAdapter(this.DataSource, this.DataMember,
this.AbscissaData, this.OpenData, this.LowData, this.HighData, this.CloseData);
Brush bearishBrush = new SolidBrush(BearishColor);
Brush bullishBrush = new SolidBrush(BullishColor);
uint offset = 0;
if (this.centered_)
{
offset = (uint)(CalculatePhysicalSeparation(cd, xAxis) / 2.0f);
}
uint addAmount = (uint)StickWidth / 2;
uint stickWidth = (uint)StickWidth;
if (StickWidth == AutoScaleStickWidth)
{
// default
addAmount = 2;
stickWidth = 4;
float minDist = CalculatePhysicalSeparation(cd, xAxis);
addAmount = (uint)(minDist / 3);
stickWidth = addAmount * 2;
}
Pen p = new Pen(this.color_);
/*
* // brant hyatt proposed.
* if (this.Style == Styles.Stick)
* {
* p.Width = stickWidth;
* addAmount = stickWidth + 2;
* }
*/
for (int i = 0; i < cd.Count; ++i)
{
PointOLHC point = (PointOLHC)cd[i];
if ((!double.IsNaN(point.Open)) && (!double.IsNaN(point.High)) && (!double.IsNaN(point.Low)) && (!double.IsNaN(point.Close)))
{
int xPos = (int)(xAxis.WorldToPhysical(point.X, false)).X;
if (xPos + offset + addAmount < xAxis.PhysicalMin.X || xAxis.PhysicalMax.X < xPos + offset - addAmount)
{
continue;
}
int yPos1 = (int)(yAxis.WorldToPhysical(point.Low, false)).Y;
int yPos2 = (int)(yAxis.WorldToPhysical(point.High, false)).Y;
int yPos3 = (int)(yAxis.WorldToPhysical(point.Open, false)).Y;
int yPos4 = (int)(yAxis.WorldToPhysical(point.Close, false)).Y;
if (this.Style == Styles.Stick)
{
/*
* // brant hyatt proposed.
* if (i > 0)
* {
* if ( ((PointOLHC)cd[i]).Close > ((PointOLHC)cd[i-1]).Close)
* {
* p.Color = BullishColor;
* }
* else
* {
* p.Color = BearishColor;
* }
* }
*/
g.DrawLine(p, (int)(xPos + offset), yPos1, (int)(xPos + offset), yPos2);
g.DrawLine(p, (int)(xPos - addAmount + offset), yPos3, (int)(xPos + offset), yPos3);
g.DrawLine(p, (int)(xPos + offset), yPos4, (int)(xPos + addAmount + offset), yPos4);
}
else if (this.Style == Styles.Filled)
{
g.DrawLine(p, xPos + (int)offset, yPos1, xPos + (int)offset, yPos2);
if (yPos3 > yPos4)
{
g.FillRectangle(bullishBrush, xPos - (int)addAmount + (int)offset, yPos4, (int)stickWidth, yPos3 - yPos4);
g.DrawRectangle(p, xPos - (int)addAmount + (int)offset, yPos4, (int)stickWidth, yPos3 - yPos4);
}
else if (yPos3 < yPos4)
{
g.FillRectangle(bearishBrush, xPos - (int)addAmount + (int)offset, yPos3, (int)stickWidth, yPos4 - yPos3);
g.DrawRectangle(p, xPos - (int)addAmount + (int)offset, yPos3, (int)stickWidth, yPos4 - yPos3);
}
else
{
g.DrawLine(p, xPos - (int)addAmount + (int)offset, yPos3, xPos - (int)addAmount + (int)stickWidth + (int)offset, yPos3);
}
}
}
}
}
/// <summary>
/// Draws the grid
/// </summary>
/// <param name="g">The graphics surface on which to draw</param>
/// <param name="xAxis">The physical x axis to draw horizontal lines parallel to.</param>
/// <param name="yAxis">The physical y axis to draw vertical lines parallel to.</param>
public void Draw( Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis )
{
ArrayList xLargePositions = null;
ArrayList yLargePositions = null;
ArrayList xSmallPositions = null;
ArrayList ySmallPositions = null;
if (this.horizontalGridType_ != GridType.None)
{
xAxis.Axis.WorldTickPositions_FirstPass( xAxis.PhysicalMin, xAxis.PhysicalMax, out xLargePositions, out xSmallPositions );
DrawGridLines( g, xAxis, yAxis, xLargePositions, true, this.MajorGridPen );
}
if (this.verticalGridType_ != GridType.None)
{
yAxis.Axis.WorldTickPositions_FirstPass( yAxis.PhysicalMin, yAxis.PhysicalMax, out yLargePositions, out ySmallPositions );
DrawGridLines( g, yAxis, xAxis, yLargePositions, false, this.MajorGridPen );
}
if (this.horizontalGridType_ == GridType.Fine)
{
xAxis.Axis.WorldTickPositions_SecondPass( xAxis.PhysicalMin, xAxis.PhysicalMax, xLargePositions, ref xSmallPositions );
DrawGridLines( g, xAxis, yAxis, xSmallPositions, true, this.MinorGridPen );
}
if (this.verticalGridType_ == GridType.Fine)
{
yAxis.Axis.WorldTickPositions_SecondPass( yAxis.PhysicalMin, yAxis.PhysicalMax, yLargePositions, ref ySmallPositions );
DrawGridLines( g, yAxis, xAxis, ySmallPositions, false, this.MinorGridPen );
}
}
/// <summary>
/// Applies the constraint to the axes.
/// </summary>
/// <param name="pXAxis1">The bottom x-axis.</param>
/// <param name="pYAxis1">The left y-axis.</param>
/// <param name="pXAxis2">The top x-axis.</param>
/// <param name="pYAxis2">The right y-axis.</param>
public override void ApplyConstraint(
PhysicalAxis pXAxis1, PhysicalAxis pYAxis1,
PhysicalAxis pXAxis2, PhysicalAxis pYAxis2)
{
double xWorldRange = Math.Abs( pXAxis1.Axis.WorldMax - pXAxis1.Axis.WorldMin );
double xPhysicalRange = Math.Abs( pXAxis1.PhysicalMax.X - pXAxis1.PhysicalMin.X );
double xDirPixelSize = xWorldRange / xPhysicalRange;
double yWorldRange = Math.Abs( pYAxis1.Axis.WorldMax - pYAxis1.Axis.WorldMin );
double yPhysicalRange = Math.Abs( pYAxis1.PhysicalMax.Y - pYAxis1.PhysicalMin.Y );
double yDirPixelSize = yWorldRange / yPhysicalRange;
double currentAspectRatio = yDirPixelSize / xDirPixelSize;
// we want to change the current aspect ratio to be the desired.
// to do this, we may only add the world pixel lengths.
if ( this.a_ > currentAspectRatio )
{
// want to increase aspect ratio. Therefore, want to add some amount
// to yDirPixelSize (numerator).
double toAdd = ( this.a_ - currentAspectRatio ) * xDirPixelSize;
int newHeight =
(int)( Math.Abs(pYAxis1.Axis.WorldMax - pYAxis1.Axis.WorldMin) / (yDirPixelSize + toAdd) );
int changeInHeight = (int)yPhysicalRange - newHeight;
int changeBottom = changeInHeight/2;
int changeTop = changeInHeight/2;
if (this.holdFixedX_ != null)
{
if ( (PlotSurface2D.XAxisPosition)this.holdFixedX_ == PlotSurface2D.XAxisPosition.Bottom )
{
changeBottom = 0;
changeTop = changeInHeight;
}
else
{
changeBottom = changeInHeight;
changeTop = 0;
}
}
pYAxis1.PhysicalMin = new Point( pYAxis1.PhysicalMin.X, pYAxis1.PhysicalMin.Y-changeBottom );
pYAxis1.PhysicalMax = new Point( pYAxis1.PhysicalMax.X, pYAxis1.PhysicalMax.Y+changeTop );
pYAxis2.PhysicalMin = new Point( pYAxis2.PhysicalMin.X, pYAxis2.PhysicalMin.Y-changeBottom );
pYAxis2.PhysicalMax = new Point( pYAxis2.PhysicalMax.X, pYAxis2.PhysicalMax.Y+changeTop );
pXAxis1.PhysicalMin = new Point( pXAxis1.PhysicalMin.X, pXAxis1.PhysicalMin.Y-changeBottom );
pXAxis1.PhysicalMax = new Point( pXAxis1.PhysicalMax.X, pXAxis1.PhysicalMax.Y-changeBottom );
pXAxis2.PhysicalMin = new Point( pXAxis2.PhysicalMin.X, pXAxis2.PhysicalMin.Y+changeTop );
pXAxis2.PhysicalMax = new Point( pXAxis2.PhysicalMax.X, pXAxis2.PhysicalMax.Y+changeTop );
}
else
{
// want to decrease aspect ratio. Therefore, want to add some amount
// to xDirPixelSize (denominator).
double toAdd = yDirPixelSize / this.a_ - xDirPixelSize;
int newWidth =
(int)( Math.Abs(pXAxis1.Axis.WorldMax - pXAxis1.Axis.WorldMin) / (xDirPixelSize + toAdd) );
int changeInWidth = (int)xPhysicalRange - newWidth;
int changeLeft = changeInWidth / 2;
int changeRight = changeInWidth / 2;
if (this.holdFixedY_ != null)
{
if ( (PlotSurface2D.YAxisPosition)this.holdFixedY_ == PlotSurface2D.YAxisPosition.Left )
{
changeLeft = 0;
changeRight = changeInWidth;
}
else
{
changeLeft = changeInWidth;
changeRight = 0;
}
}
pXAxis1.PhysicalMin = new Point( pXAxis1.PhysicalMin.X+changeLeft, pXAxis1.PhysicalMin.Y );
pXAxis1.PhysicalMax = new Point( pXAxis1.PhysicalMax.X-changeRight, pXAxis1.PhysicalMax.Y );
pXAxis2.PhysicalMin = new Point( pXAxis2.PhysicalMin.X+changeLeft, pXAxis2.PhysicalMin.Y );
pXAxis2.PhysicalMax = new Point( pXAxis2.PhysicalMax.X-changeRight, pXAxis2.PhysicalMax.Y );
pYAxis1.PhysicalMin = new Point( pYAxis1.PhysicalMin.X+changeLeft, pYAxis1.PhysicalMin.Y );
pYAxis1.PhysicalMax = new Point( pYAxis1.PhysicalMax.X+changeLeft, pYAxis1.PhysicalMax.Y );
pYAxis2.PhysicalMin = new Point( pYAxis2.PhysicalMin.X-changeRight, pYAxis2.PhysicalMin.Y );
pYAxis2.PhysicalMax = new Point( pYAxis2.PhysicalMax.X-changeRight, pYAxis2.PhysicalMax.Y );
}
}
/// <summary>
/// Draw the the PlotSurface2D and all contents [axes, drawables, and legend] on the
/// supplied graphics surface.
/// </summary>
/// <param name="g">The graphics surface on which to draw.</param>
/// <param name="bounds">A bounding box on this surface that denotes the area on the
/// surface to confine drawing to.</param>
public void Draw(Graphics g, Rectangle bounds)
{
// determine font sizes and tick scale factor.
float scale = DetermineScaleFactor(bounds.Width, bounds.Height);
// if there is nothing to plot, return.
if (drawables_.Count == 0)
{
// draw title
float x_center = (bounds.Left + bounds.Right) / 2.0f;
float y_center = (bounds.Top + bounds.Bottom) / 2.0f;
Font scaled_font;
if (this.AutoScaleTitle)
{
scaled_font = Utils.ScaleFont(titleFont_, scale);
}
else
{
scaled_font = titleFont_;
}
g.DrawString(title_, scaled_font, this.titleBrush_, x_center, y_center);
return;
}
// determine the [non physical] axes to draw based on the axis properties set.
Axis xAxis1 = null;
Axis xAxis2 = null;
Axis yAxis1 = null;
Axis yAxis2 = null;
this.DetermineAxesToDraw(out xAxis1, out xAxis2, out yAxis1, out yAxis2);
// apply scale factor to axes as desired.
if (xAxis1.AutoScaleTicks)
{
xAxis1.TickScale = scale;
}
if (xAxis1.AutoScaleText)
{
xAxis1.FontScale = scale;
}
if (yAxis1.AutoScaleTicks)
{
yAxis1.TickScale = scale;
}
if (yAxis1.AutoScaleText)
{
yAxis1.FontScale = scale;
}
if (xAxis2.AutoScaleTicks)
{
xAxis2.TickScale = scale;
}
if (xAxis2.AutoScaleText)
{
xAxis2.FontScale = scale;
}
if (yAxis2.AutoScaleTicks)
{
yAxis2.TickScale = scale;
}
if (yAxis2.AutoScaleText)
{
yAxis2.FontScale = scale;
}
// determine the default physical positioning of those axes.
PhysicalAxis pXAxis1 = null;
PhysicalAxis pYAxis1 = null;
PhysicalAxis pXAxis2 = null;
PhysicalAxis pYAxis2 = null;
this.DeterminePhysicalAxesToDraw(
bounds, xAxis1, xAxis2, yAxis1, yAxis2,
out pXAxis1, out pXAxis2, out pYAxis1, out pYAxis2);
float oldXAxis2Height = pXAxis2.PhysicalMin.Y;
// Apply axes constraints
for (int i = 0; i < axesConstraints_.Count; ++i)
{
((AxesConstraint)axesConstraints_[i]).ApplyConstraint(
pXAxis1, pYAxis1, pXAxis2, pYAxis2);
}
/////////////////////////////////////////////////////////////////////////
// draw legend if have one.
// Note: this will update axes if necessary.
Point legendPosition = new Point(0, 0);
if (this.legend_ != null)
{
legend_.UpdateAxesPositions(
pXAxis1, pYAxis1, pXAxis2, pYAxis2,
this.drawables_, scale, this.padding_, bounds,
out legendPosition);
}
float newXAxis2Height = pXAxis2.PhysicalMin.Y;
float titleExtraOffset = oldXAxis2Height - newXAxis2Height;
// now we are ready to define the bounding box for the plot area (to use in clipping
// operations.
plotAreaBoundingBoxCache_ = new Rectangle(
Math.Min(pXAxis1.PhysicalMin.X, pXAxis1.PhysicalMax.X),
Math.Min(pYAxis1.PhysicalMax.Y, pYAxis1.PhysicalMin.Y),
Math.Abs(pXAxis1.PhysicalMax.X - pXAxis1.PhysicalMin.X + 1),
Math.Abs(pYAxis1.PhysicalMin.Y - pYAxis1.PhysicalMax.Y + 1)
);
bbXAxis1Cache_ = pXAxis1.GetBoundingBox();
bbXAxis2Cache_ = pXAxis2.GetBoundingBox();
bbYAxis1Cache_ = pYAxis1.GetBoundingBox();
bbYAxis2Cache_ = pYAxis2.GetBoundingBox();
// Fill in the background.
if (this.plotBackColor_ != null)
{
g.FillRectangle(
new System.Drawing.SolidBrush((Color)this.plotBackColor_),
(Rectangle)plotAreaBoundingBoxCache_);
}
else if (this.plotBackBrush_ != null)
{
g.FillRectangle(
this.plotBackBrush_.Get((Rectangle)plotAreaBoundingBoxCache_),
(Rectangle)plotAreaBoundingBoxCache_);
}
else if (this.plotBackImage_ != null)
{
Image image = Utils.TiledImage(this.plotBackImage_, new Size(((Rectangle)plotAreaBoundingBoxCache_).Width, ((Rectangle)plotAreaBoundingBoxCache_).Height));
//g.DrawImage( Utils.TiledImage( this.plotBackImage_ , new Size( ((Rectangle)plotAreaBoundingBoxCache_).Width,((Rectangle)plotAreaBoundingBoxCache_).Height ) ), (Rectangle)plotAreaBoundingBoxCache_ );
g.DrawImage(image, (Rectangle)plotAreaBoundingBoxCache_, (Rectangle)plotAreaBoundingBoxCache_, GraphicsUnit.Pixel);
}
// draw title
float xt = (pXAxis2.PhysicalMax.X + pXAxis2.PhysicalMin.X) / 2.0f;
float yt = bounds.Top + this.padding_ - titleExtraOffset;
Font scaledFont;
if (this.AutoScaleTitle)
{
scaledFont = Utils.ScaleFont(titleFont_, scale);
}
else
{
scaledFont = titleFont_;
}
g.DrawString(title_, scaledFont, this.titleBrush_, xt, yt);
//count number of new lines in title.
int nlCount = 0;
for (int i = 0; i < title_.Length; ++i)
{
if (title_[i] == '\n')
{
nlCount += 1;
}
}
SizeF s = g.MeasureString(title_, scaledFont);
bbTitleCache_ = new Rectangle((int)(xt - s.Width / 2), (int)(yt), (int)(s.Width), (int)(s.Height) * (nlCount + 1));
bool legendDrawn = false;
for (int i_o = 0; i_o < ordering_.Count; ++i_o)
{
int i = (int)ordering_.GetByIndex(i_o);
double zOrder = (double)ordering_.GetKey(i_o);
if (zOrder > this.legendZOrder_)
{
// draw legend.
if (!legendDrawn && this.legend_ != null)
{
legend_.Draw(g, legendPosition, this.drawables_, scale);
legendDrawn = true;
}
}
IDrawable drawable = (IDrawable)drawables_[i];
XAxisPosition xap = (XAxisPosition)xAxisPositions_[i];
YAxisPosition yap = (YAxisPosition)yAxisPositions_[i];
PhysicalAxis drawXAxis;
PhysicalAxis drawYAxis;
if (xap == XAxisPosition.Bottom)
{
drawXAxis = pXAxis1;
}
else
{
drawXAxis = pXAxis2;
}
if (yap == YAxisPosition.Left)
{
drawYAxis = pYAxis1;
}
else
{
drawYAxis = pYAxis2;
}
// set the clipping region.. (necessary for zoom)
g.Clip = new Region((Rectangle)plotAreaBoundingBoxCache_);
// plot.
drawable.Draw(g, drawXAxis, drawYAxis);
// reset it..
g.ResetClip();
}
if (!legendDrawn && this.legend_ != null)
{
legend_.Draw(g, legendPosition, this.drawables_, scale);
}
// cache the physical axes we used on this draw;
this.pXAxis1Cache_ = pXAxis1;
this.pYAxis1Cache_ = pYAxis1;
this.pXAxis2Cache_ = pXAxis2;
this.pYAxis2Cache_ = pYAxis2;
// now draw axes.
Rectangle axisBounds;
pXAxis1.Draw(g, out axisBounds);
pXAxis2.Draw(g, out axisBounds);
pYAxis1.Draw(g, out axisBounds);
pYAxis2.Draw(g, out axisBounds);
/*
#if DEBUG_BOUNDING_BOXES
* g.DrawRectangle( new Pen(Color.Orange), (Rectangle) bbXAxis1Cache_ );
* g.DrawRectangle( new Pen(Color.Orange), (Rectangle) bbXAxis2Cache_ );
* g.DrawRectangle( new Pen(Color.Orange), (Rectangle) bbYAxis1Cache_ );
* g.DrawRectangle( new Pen(Color.Orange), (Rectangle) bbYAxis2Cache_ );
* g.DrawRectangle( new Pen(Color.Red,5.0F),(Rectangle) plotAreaBoundingBoxCache_);
* //if(this.ShowLegend)g.DrawRectangle( new Pen(Color.Chocolate, 3.0F), (Rectangle) bbLegendCache_);
* g.DrawRectangle( new Pen(Color.DeepPink,2.0F), (Rectangle) bbTitleCache_);
#endif*/
}
/// <summary>
/// Applies the constraint to the axes.
/// </summary>
/// <param name="pXAxis1">The bottom x-axis.</param>
/// <param name="pYAxis1">The left y-axis.</param>
/// <param name="pXAxis2">The top x-axis.</param>
/// <param name="pYAxis2">The right y-axis.</param>
public override void ApplyConstraint(
PhysicalAxis pXAxis1, PhysicalAxis pYAxis1,
PhysicalAxis pXAxis2, PhysicalAxis pYAxis2)
{
if ( xAxisPosition_ != null )
{
if ((PlotSurface2D.XAxisPosition)xAxisPosition_ == PlotSurface2D.XAxisPosition.Bottom)
{
pXAxis1.PhysicalMin = new Point( pXAxis1.PhysicalMin.X, position_ );
pXAxis1.PhysicalMax = new Point( pXAxis1.PhysicalMax.X, position_ );
pYAxis1.PhysicalMin = new Point( pYAxis1.PhysicalMin.X, position_ );
pYAxis2.PhysicalMin = new Point( pYAxis2.PhysicalMin.X, position_ );
}
else
{
pXAxis2.PhysicalMin = new Point( pXAxis2.PhysicalMin.X, position_ );
pXAxis2.PhysicalMax = new Point( pXAxis2.PhysicalMax.X, position_ );
pYAxis1.PhysicalMax = new Point( pYAxis1.PhysicalMax.X, position_ );
pYAxis2.PhysicalMax = new Point( pYAxis2.PhysicalMax.X, position_ );
}
}
else if (yAxisPosition_ != null )
{
if ((PlotSurface2D.YAxisPosition)yAxisPosition_ == PlotSurface2D.YAxisPosition.Left)
{
pYAxis1.PhysicalMin = new Point( position_, pYAxis1.PhysicalMin.Y );
pYAxis1.PhysicalMax = new Point( position_, pYAxis1.PhysicalMax.Y );
pXAxis1.PhysicalMin = new Point( position_, pXAxis1.PhysicalMin.Y );
pXAxis2.PhysicalMin = new Point( position_, pXAxis2.PhysicalMin.Y );
}
else
{
pYAxis2.PhysicalMin = new Point( position_, pYAxis2.PhysicalMin.Y );
pYAxis2.PhysicalMax = new Point( position_, pYAxis2.PhysicalMax.Y );
pXAxis1.PhysicalMax = new Point( position_, pXAxis1.PhysicalMax.Y );
pXAxis2.PhysicalMax = new Point( position_, pXAxis2.PhysicalMax.Y );
}
}
}
/// <summary>
/// Draw on to the supplied graphics surface against the supplied axes.
/// </summary>
/// <param name="g">The graphics surface on which to draw.</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
/// <remarks>TODO: block positions may be off by a pixel or so. maybe. Re-think calculations</remarks>
public void Draw(Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis)
{
if (data_ == null || data_.GetLength(0) == 0 || data_.GetLength(1) == 0)
{
return;
}
double worldWidth = xAxis.Axis.WorldMax - xAxis.Axis.WorldMin;
double numBlocksHorizontal = worldWidth / this.xStep_;
double worldHeight = yAxis.Axis.WorldMax - yAxis.Axis.WorldMin;
double numBlocksVertical = worldHeight / this.yStep_;
double physicalWidth = xAxis.PhysicalMax.X - xAxis.PhysicalMin.X;
double blockWidth = physicalWidth / numBlocksHorizontal;
bool wPositive = true;
if (blockWidth < 0.0)
{
wPositive = false;
}
blockWidth = Math.Abs(blockWidth) + 1;
double physicalHeight = yAxis.PhysicalMax.Y - yAxis.PhysicalMin.Y;
double blockHeight = physicalHeight / numBlocksVertical;
bool hPositive = true;
if (blockHeight < 0.0)
{
hPositive = false;
}
blockHeight = Math.Abs(blockHeight) + 1;
for (int i = 0; i < data_.GetLength(0); ++i)
{
for (int j = 0; j < data_.GetLength(1); ++j)
{
double wX = (double)j * this.xStep_ + xStart_;
double wY = (double)i * this.yStep_ + yStart_;
if (!hPositive)
{
wY += yStep_;
}
if (!wPositive)
{
wX += xStep_;
}
if (this.center_)
{
wX -= this.xStep_ / 2.0;
wY -= this.yStep_ / 2.0;
}
Pen p = new Pen(this.Gradient.GetColor((data_[i, j] - this.dataMin_) / (this.dataMax_ - this.dataMin_)));
int x = (int)xAxis.WorldToPhysical(wX, false).X;
int y = (int)yAxis.WorldToPhysical(wY, false).Y;
Brush brush = new SolidBrush(p.Color);
g.FillRectangle(brush,
x,
y,
(int)blockWidth,
(int)blockHeight);
//g.DrawRectangle(Pens.White,x,y,(int)blockWidth,(int)blockHeight);
}
}
}
/// <summary>
/// Applies the constraint to the axes.
/// </summary>
/// <param name="pXAxis1">The bottom x-axis.</param>
/// <param name="pYAxis1">The left y-axis.</param>
/// <param name="pXAxis2">The top x-axis.</param>
/// <param name="pYAxis2">The right y-axis.</param>
public override void ApplyConstraint(
PhysicalAxis pXAxis1, PhysicalAxis pYAxis1,
PhysicalAxis pXAxis2, PhysicalAxis pYAxis2)
{
int desiredLength = (int)(pYAxis1.Axis.WorldLength / this.pWorldLength_);
int currentLength = pYAxis1.PhysicalLength;
int delta = currentLength - desiredLength;
int changeBottom = -delta / 2;
int changeTop = -delta / 2;
if (this.holdFixedX_ != null)
{
if ( (PlotSurface2D.XAxisPosition)this.holdFixedX_ == PlotSurface2D.XAxisPosition.Bottom )
{
changeBottom = 0;
changeTop = -delta;
}
else
{
changeBottom = -delta;
changeTop = 0;
}
}
pYAxis1.PhysicalMin = new Point( pYAxis1.PhysicalMin.X, pYAxis1.PhysicalMin.Y+changeBottom );
pYAxis1.PhysicalMax = new Point( pYAxis1.PhysicalMax.X, pYAxis1.PhysicalMax.Y-changeTop );
pYAxis2.PhysicalMin = new Point( pYAxis2.PhysicalMin.X, pYAxis2.PhysicalMin.Y+changeBottom );
pYAxis2.PhysicalMax = new Point( pYAxis2.PhysicalMax.X, pYAxis2.PhysicalMax.Y-changeTop );
pXAxis1.PhysicalMin = new Point( pXAxis1.PhysicalMin.X, pXAxis1.PhysicalMin.Y+changeBottom );
pXAxis1.PhysicalMax = new Point( pXAxis1.PhysicalMax.X, pXAxis1.PhysicalMax.Y+changeBottom );
pXAxis2.PhysicalMin = new Point( pXAxis2.PhysicalMin.X, pXAxis2.PhysicalMin.Y-changeTop );
pXAxis2.PhysicalMax = new Point( pXAxis2.PhysicalMax.X, pXAxis2.PhysicalMax.Y-changeTop );
}
/// <summary>
/// Draws the line plot on a GDI+ surface against the provided x and y axes.
/// </summary>
/// <param name="g">The GDI+ surface on which to draw.</param>
/// <param name="xAxis">The X-Axis to draw against.</param>
/// <param name="yAxis">The Y-Axis to draw against.</param>
public void Draw( Graphics g, PhysicalAxis xAxis, PhysicalAxis yAxis )
{
if (this.shadow_)
{
this.DrawLineOrShadow( g, xAxis, yAxis, true );
}
this.DrawLineOrShadow( g, xAxis, yAxis, false );
}