/// <summary>
/// 画指针
/// </summary>
/// <param name="Gr"></param>
/// <param name="rc"></param>
/// <returns></returns>
public virtual bool DrawNeedle(Graphics Gr, RectangleF rc)
{
if (this.AnalogMeter == null)
{
return(false);
}
float w, h;
w = rc.Width;
h = rc.Height;
double minValue = this.AnalogMeter.MinValue;
double maxValue = this.AnalogMeter.MaxValue;
double currValue = this.AnalogMeter.Value;
float startAngle = this.AnalogMeter.GetStartAngle();
float endAngle = this.AnalogMeter.GetEndAngle();
float radius = (float)(w / 2 - (w * 0.12));
float val = (float)(maxValue - minValue);
val = (float)((100 * (currValue - minValue)) / val);
val = ((endAngle - startAngle) * val) / 100;
val += startAngle;
float angle = HMIMath.GetRadian(val);
float cx = needleCenter.X;
float cy = needleCenter.Y;
PointF ptStart = new PointF(0, 0);
PointF ptEnd = new PointF(0, 0);
GraphicsPath pth1 = new GraphicsPath();
ptStart.X = cx;
ptStart.Y = cy;
angle = HMIMath.GetRadian(val + 10);
ptEnd.X = (float)(cx + (w * .09F) * Math.Cos(angle));
ptEnd.Y = (float)(cy + (w * .09F) * Math.Sin(angle));
pth1.AddLine(ptStart, ptEnd);
ptStart = ptEnd;
angle = HMIMath.GetRadian(val);
ptEnd.X = (float)(cx + radius * Math.Cos(angle));
ptEnd.Y = (float)(cy + radius * Math.Sin(angle));
pth1.AddLine(ptStart, ptEnd);
ptStart = ptEnd;
angle = HMIMath.GetRadian(val - 10);
ptEnd.X = (float)(cx + (w * .09F) * Math.Cos(angle));
ptEnd.Y = (float)(cy + (w * .09F) * Math.Sin(angle));
pth1.AddLine(ptStart, ptEnd);
pth1.CloseFigure();
Color clr = this.AnalogMeter.NeedleColor;
if (this.AnalogMeter.Value < this.AnalogMeter.MinNValueNor ||
this.AnalogMeter.Value > this.AnalogMeter.MaxValueNor)
{
clr = this.AnalogMeter.UnNormalColor;
}
SolidBrush br = new SolidBrush(clr);
Pen pen = new Pen(clr);
Gr.DrawPath(pen, pth1);
Gr.FillPath(br, pth1);
pth1.Dispose();
br.Dispose();
pen.Dispose();
return(true);
}
/// <summary>
/// 画刻度
/// </summary>
/// <param name="Gr"></param>
/// <param name="rc"></param>
/// <returns></returns>
public virtual bool DrawDivisions(Graphics Gr, RectangleF rc)
{
if (this.AnalogMeter == null)
{
return(false);
}
float startAngle = this.AnalogMeter.GetStartAngle();
float endAngle = this.AnalogMeter.GetEndAngle();
float scaleDivisions = this.AnalogMeter.ScaleDivisions;
float scaleSubDivisions = this.AnalogMeter.ScaleSubDivisions;
double minValue = this.AnalogMeter.MinValue;
double maxValue = this.AnalogMeter.MaxValue;
Color scaleColor = this.AnalogMeter.ScaleColor;
float cx = needleCenter.X;
float cy = needleCenter.Y;
float w = rc.Width;
float h = rc.Height;
float incr = HMIMath.GetRadian((endAngle - startAngle) / ((scaleDivisions - 1) * (scaleSubDivisions + 1)));
float currentAngle = HMIMath.GetRadian(startAngle);
float radius = (float)(w / 2 - (w * 0.08));//半径
float rulerValue = (float)minValue;
Pen pen = new Pen(scaleColor, (1 * drawRatio));
SolidBrush br = new SolidBrush(scaleColor);
PointF ptStart = new PointF(0, 0);
PointF ptEnd = new PointF(0, 0);
int n = 0;
for (; n < scaleDivisions; n++)
{
//画大刻度
ptStart.X = (float)(cx + radius * Math.Cos(currentAngle));
ptStart.Y = (float)(cy + radius * Math.Sin(currentAngle));
ptEnd.X = (float)(cx + (radius - w / 20) * Math.Cos(currentAngle));
ptEnd.Y = (float)(cy + (radius - w / 20) * Math.Sin(currentAngle));
Gr.DrawLine(pen, ptStart, ptEnd);
//画文本
Font font = new Font(this.AnalogMeter.Font.FontFamily, (float)(6F * drawRatio));
float tx = (float)(cx + (radius - (20 * drawRatio)) * Math.Cos(currentAngle));
float ty = (float)(cy + (radius - (20 * drawRatio)) * Math.Sin(currentAngle));
double val = Math.Round(rulerValue);
String str = String.Format("{0,0:D}", (int)val);
SizeF size = Gr.MeasureString(str, font);
Gr.DrawString(str,
font,
br,
tx - (float)(size.Width * 0.5),
ty - (float)(size.Height * 0.5));
rulerValue += (float)((maxValue - minValue) / (scaleDivisions - 1));
if (n == scaleDivisions - 1)
{
font.Dispose();
break;
}
if (scaleDivisions <= 0)
{
currentAngle += incr;
}
else
{
for (int j = 0; j <= scaleSubDivisions; j++)
{
currentAngle += incr;
ptStart.X = (float)(cx + radius * Math.Cos(currentAngle));
ptStart.Y = (float)(cy + radius * Math.Sin(currentAngle));
ptEnd.X = (float)(cx + (radius - w / 50) * Math.Cos(currentAngle));
ptEnd.Y = (float)(cy + (radius - w / 50) * Math.Sin(currentAngle));
Gr.DrawLine(pen, ptStart, ptEnd);
}
}
font.Dispose();
}
pen.Dispose();
br.Dispose();
return(true);
}
