PointF CreatePoint(ISpatialDisplay display, IPosition p)
{
float x = display.EastingToDisplay(p.X);
float y = display.NorthingToDisplay(p.Y);
return(new PointF(x, y));
}
/// <summary>
/// Converts a ground position into screen coordinates.
/// </summary>
/// <param name="p">The position to convert</param>
/// <returns>The corresponding screen position</returns>
internal Point GetScreenPoint(IPosition p)
{
ISpatialDisplay d = ActiveDisplay;
int x = (int)d.EastingToDisplay(p.X);
int y = (int)d.NorthingToDisplay(p.Y);
Control c = d.MapPanel;
return(c.PointToScreen(new Point(x, y)));
}
/// <summary>
/// Draws a circle
/// </summary>
/// <param name="display">The display to draw to</param>
/// <param name="center">The position of the center of the circle</param>
/// <param name="radius">The radius of the circle, in meters on the ground</param>
public void Render(ISpatialDisplay display, IPosition center, double radius)
{
float xc = display.EastingToDisplay(center.X);
float yc = display.NorthingToDisplay(center.Y);
float r = display.LengthToDisplay(radius);
float sz = r + r;
display.Graphics.DrawEllipse(m_Pen, xc - r, yc - r, sz, sz);
}
/// <summary>
/// Draws a circular arc
/// </summary>
/// <param name="display">The display to draw to</param>
/// <param name="arc">The circular arc</param>
public void Render(ISpatialDisplay display, IClockwiseCircularArcGeometry arc)
{
ICircleGeometry circle = arc.Circle;
IWindow extent = CircleGeometry.GetExtent(circle);
float topLeftX = display.EastingToDisplay(extent.Min.X);
float topLeftY = display.NorthingToDisplay(extent.Max.Y);
float size = 2.0f * display.LengthToDisplay(circle.Radius);
float startAngle = (float)(arc.StartBearingInRadians * MathConstants.RADTODEG - 90.0);
float sweepAngle = (float)(arc.SweepAngleInRadians * MathConstants.RADTODEG);
display.Graphics.DrawArc(m_Pen, topLeftX, topLeftY, size, size, startAngle, sweepAngle);
}
PointF[] GetDisplayPoints(ISpatialDisplay display, IPosition[] line)
{
PointF[] pts = new PointF[line.Length];
for (int i = 0; i < line.Length; i++)
{
IPosition gp = line[i];
pts[i].X = display.EastingToDisplay(gp.X);
pts[i].Y = display.NorthingToDisplay(gp.Y);
}
return(pts);
}
PointF[] GetDisplayPoints(ISpatialDisplay display, IPosition[] line)
{
PointF[] pts = new PointF[line.Length];
for (int i=0; i<line.Length; i++)
{
IPosition gp = line[i];
pts[i].X = display.EastingToDisplay(gp.X);
pts[i].Y = display.NorthingToDisplay(gp.Y);
}
return pts;
}
PointF CreatePoint(ISpatialDisplay display, IPosition p)
{
float x = display.EastingToDisplay(p.X);
float y = display.NorthingToDisplay(p.Y);
return new PointF(x, y);
}
/// <summary>
/// Draws a circle
/// </summary>
/// <param name="display">The display to draw to</param>
/// <param name="center">The position of the center of the circle</param>
/// <param name="radius">The radius of the circle, in meters on the ground</param>
public void Render(ISpatialDisplay display, IPosition center, double radius)
{
float xc = display.EastingToDisplay(center.X);
float yc = display.NorthingToDisplay(center.Y);
float r = display.LengthToDisplay(radius);
float sz = r+r;
display.Graphics.DrawEllipse(m_Pen, xc-r, yc-r, sz, sz);
}
/// <summary>
/// Draws a circular arc
/// </summary>
/// <param name="display">The display to draw to</param>
/// <param name="arc">The circular arc</param>
public void Render(ISpatialDisplay display, IClockwiseCircularArcGeometry arc)
{
ICircleGeometry circle = arc.Circle;
IWindow extent = CircleGeometry.GetExtent(circle);
float topLeftX = display.EastingToDisplay(extent.Min.X);
float topLeftY = display.NorthingToDisplay(extent.Max.Y);
float size = 2.0f * display.LengthToDisplay(circle.Radius);
float startAngle = (float)(arc.StartBearingInRadians * MathConstants.RADTODEG - 90.0);
float sweepAngle = (float)(arc.SweepAngleInRadians * MathConstants.RADTODEG);
display.Graphics.DrawArc(m_Pen, topLeftX, topLeftY, size, size, startAngle, sweepAngle);
}
