/// <summary>
/// Draws the limit line (if it contains at least 2 positions)
/// </summary>
/// <param name="display">The display to draw to</param>
internal void Render(ISpatialDisplay display)
{
if (m_Limit==null || m_Limit.Count==0 || m_Mouse==null)
return;
// Draw dotted line from the last point on the limit line to the last known mouse position
int lastIndex = m_Limit.Count-1;
IPosition last = m_Limit[lastIndex];
DottedStyle dottedLine = new DottedStyle(Color.Gray);
dottedLine.Render(display, new IPosition[] { last, m_Mouse });
// If we have two or more positions, draw an additional dotted line to the start of
// the limit line.
if (m_Limit.Count>=2)
dottedLine.Render(display, new IPosition[] { m_Mouse, m_Limit[0] });
// Draw the limit line
if (m_Limit.Count>1)
dottedLine.Render(display, m_Limit.ToArray());
// Draw any limit line selection
if (m_LimSel.Count>0)
{
HighlightStyle style = new HighlightStyle();
style.ShowLineEndPoints = false;
new SpatialSelection(m_LimSel).Render(display, style);
}
}
internal override void Paint(PointFeature point)
{
// If applicable circles are defined, ensure they show
if (m_Circles != null)
{
ISpatialDisplay display = ActiveDisplay;
IDrawStyle style = new DottedStyle(Color.Magenta);
foreach (Circle c in m_Circles)
c.Render(display, style);
}
base.Paint(point);
}
private void listBox_SelectedValueChanged(object sender, EventArgs e)
{
// If we previously had a selected circle, erase it.
ISpatialDisplay display = EditingController.Current.ActiveDisplay;
if (m_Select!=null)
display.PaintNow();
/*
// If we previously had a selected circle, erase it. Then
// redraw any attached curved (erasing the highlighting
// may have left attached curves looking in poor shape).
if ( m_pSelect ) {
m_pSelect->Erase();
CeLayerList curlayer;
m_pSelect->DrawCurves(curlayer);
}
*/
// Get the new selection.
m_Select = GetSel();
if (m_Select==null)
return;
// ... and highlight it.
DottedStyle style = new DottedStyle();
m_Select.Render(display, style);
}
/// <summary>
/// Renders the geometry for the spans along a leg.
/// </summary>
/// <param name="display">The display to draw to</param>
/// <param name="spans">Information about each observed span</param>
/// <param name="sections">The geometry that corresponds to each span</param>
void DrawSpans(ISpatialDisplay display, SpanInfo[] spans, ILineGeometry[] sections)
{
Debug.Assert(spans.Length == sections.Length);
IDrawStyle solidStyle = EditingController.Current.Style(Color.Magenta);
IDrawStyle dottedStyle = new DottedStyle(Color.Magenta);
for (int i = 0; i < spans.Length; i++)
{
ILineGeometry geom = sections[i];
IDrawStyle style = (spans[i].HasLine ? solidStyle : dottedStyle);
if (geom is IClockwiseCircularArcGeometry)
style.Render(display, (IClockwiseCircularArcGeometry)geom);
else
style.Render(display, new IPosition[] { geom.Start, geom.End });
if (spans[i].HasEndPoint)
solidStyle.Render(display, geom.End);
}
}
/// <summary>
/// Draws the circular arcs that are suitable for the next pointing operation.
/// As dotted lines. This is based on the list of circles that are associated
/// with the last point that was specified.
/// </summary>
void DrawCurves()
{
// Use the circles associated with the last point entered (once the
// 2nd point has been defined, that's the one we always use).
Circle[] circles = (m_Point2!=null ? m_Cir2 : m_Cir1);
if (circles==null)
return;
// Highlight the arcs associated with each circle
ISpatialDisplay display = EditingController.Current.ActiveDisplay;
IDrawStyle dottedBlack = new DottedStyle(Color.Black);
IDrawStyle white = new DrawStyle(Color.White);
foreach(Circle c in circles)
{
foreach(ArcFeature arc in c.Arcs)
{
if (!arc.IsInactive)
{
arc.Render(display, white);
arc.Render(display, dottedBlack);
}
}
}
}
public void Render(ISpatialDisplay display, IDrawStyle style)
{
if (this.category == CadastralLineCategory.Radial)
style = new DottedStyle(style.LineColor);
if (m_Center == null)
style.Render(display, this.PositionArray);
else
{
// radius less than zero may represent a counter-clockwise direction
bool isClockwise = (this.radius > 0.0);
// Define a circular arc that is assumed to run clockwise.
ICircleGeometry circle = new CircleGeometry(m_Center.Geometry, Math.Abs(this.radius));
ICircularArcGeometry arc = new CircularArcGeometry(circle, m_From.Geometry, m_To.Geometry, isClockwise);
// Assume clockwise, see what it looks like
style.Render(display, arc);
}
/*
else
{
if (!this.arcLengthSpecified)
throw new ApplicationException("Cannot determine arc direction");
// Define a circular arc that is assumed to run clockwise.
CircleGeometry circle = new CircleGeometry(m_Center.Geometry, this.radius);
CircularArcGeometry arc = new CircularArcGeometry(circle, m_From.Geometry, m_To.Geometry, true);
// Assume clockwise, see what it looks like
new DrawStyle(Color.Red).Render(display, arc);
//double arcLength = arc.Length.Meters;
//double othLength = circle.Length.Meters;
//// Get the arc length in meters (TODO: need to access file header to determine how to convert lengths)
//if (Math.Abs(othLength - this.arcLength) < Math.Abs(arcLength - this.arcLength))
// arc.IsClockwise = false;
}
*/
}
/// <summary>
/// Draws the current state of the edit
/// </summary>
internal void Draw()
{
Debug.Assert(m_Line!=null);
ISpatialDisplay view = ActiveDisplay;
// Figure out the positions for the ends of the parallel line (if any) ...
// Assume we already know both terminals.
IPosition start = m_Term1;
IPosition end = m_Term2;
// If either one is undefined, but a dialog for it is active,
// try to get the terminal from there instead.
if (m_TermDial1!=null && start==null)
start = m_TermDial1.TerminalPosition;
if (m_TermDial2!=null && end==null)
end = m_TermDial2.TerminalPosition;
// If they weren't actually defined, use the parallel points instead.
if (start==null)
start = m_Par1;
if (end==null)
end = m_Par2;
// If those weren't defined either, try to calculate them now.
if (end==null && Calculate())
{
start = m_Par1;
end = m_Par2;
}
// Any offset point
if (m_OffsetPoint!=null)
m_OffsetPoint.Draw(view, Color.Green);
// Everything else should draw in usual command-style colour.
IDrawStyle style = EditingController.Current.Style(Color.Magenta);
IDrawStyle dottedStyle = new DottedStyle();
// If the reference line is a curve, get the curve info.
ArcFeature arc = m_Line.GetArcBase();
if (arc != null)
{
bool iscw = arc.IsClockwise;
// Reverse the direction if necessary.
if (m_IsReversed)
iscw = !iscw;
// Draw the parallel line (the rest of the circle being dotted).
if (start!=null)
{
CircularArcGeometry parArc = new CircularArcGeometry(arc.Circle, start, end, iscw);
style.Render(view, parArc);
parArc.IsClockwise = !parArc.IsClockwise;
dottedStyle.Render(view, parArc);
}
}
else
{
// PARALLEL IS STRAIGHT
// If we've got something, figure out positions for dotted portion.
if (start!=null)
{
// What's the max length of a diagonal crossing the entire screen?
double maxdiag = this.MaxDiagonal;
// What's the bearing from the start to the end of the parallel?
double bearing = Geom.BearingInRadians(start, end);
// Project to a point before the start end of the parallel, as
// well as a point after the end.
IPosition before = Geom.Polar(start, bearing+Constants.PI, maxdiag);
IPosition after = Geom.Polar(end, bearing, maxdiag);
LineSegmentGeometry.Render(before, start, view, dottedStyle);
LineSegmentGeometry.Render(start, end, view, style);
LineSegmentGeometry.Render(end, after, view, dottedStyle);
}
}
// Draw terminal positions (if defined).
if (m_Term1!=null)
style.Render(view, m_Term1);
if (m_Term2!=null)
style.Render(view, m_Term2);
// The terminal lines.
if (m_TermLine1!=null)
m_TermLine1.Render(view, style);
if (m_TermLine2!=null)
m_TermLine2.Render(view, style);
// Do the active dialog last so their stuff draws on top.
if (m_ParDial!=null)
m_ParDial.Draw();
if (m_TermDial1!=null)
m_TermDial1.Draw();
if (m_TermDial2!=null)
m_TermDial2.Draw();
}