private void DrawLineArrowsInternal(XGraphics gfx, LineShape line, double dx, double dy, out XPoint pt1, out XPoint pt2)
{
XSolidBrush fillStartArrow = ToXSolidBrush(line.Style.StartArrowStyle.Fill);
XPen strokeStartArrow = ToXPen(line.Style.StartArrowStyle, _scaleToPage, _sourceDpi, _targetDpi);
XSolidBrush fillEndArrow = ToXSolidBrush(line.Style.EndArrowStyle.Fill);
XPen strokeEndArrow = ToXPen(line.Style.EndArrowStyle, _scaleToPage, _sourceDpi, _targetDpi);
double _x1 = line.Start.X + dx;
double _y1 = line.Start.Y + dy;
double _x2 = line.End.X + dx;
double _y2 = line.End.Y + dy;
LineShapeExtensions.GetMaxLength(line, ref _x1, ref _y1, ref _x2, ref _y2);
double x1 = _scaleToPage(_x1);
double y1 = _scaleToPage(_y1);
double x2 = _scaleToPage(_x2);
double y2 = _scaleToPage(_y2);
var sas = line.Style.StartArrowStyle;
var eas = line.Style.EndArrowStyle;
double a1 = Math.Atan2(y1 - y2, x1 - x2) * 180.0 / Math.PI;
double a2 = Math.Atan2(y2 - y1, x2 - x1) * 180.0 / Math.PI;
// Draw start arrow.
pt1 = DrawLineArrowInternal(gfx, strokeStartArrow, fillStartArrow, x1, y1, a1, sas);
// Draw end arrow.
pt2 = DrawLineArrowInternal(gfx, strokeEndArrow, fillEndArrow, x2, y2, a2, eas);
}
/// <inheritdoc/>
public override void Draw(object dc, LineShape line, double dx, double dy, object db, object r)
{
if (!line.IsStroked)
{
return;
}
var dxf = dc as DxfDocument;
double _x1 = line.Start.X + dx;
double _y1 = line.Start.Y + dy;
double _x2 = line.End.X + dx;
double _y2 = line.End.Y + dy;
LineShapeExtensions.GetMaxLength(line, ref _x1, ref _y1, ref _x2, ref _y2);
// TODO: Draw line start arrow.
// TODO: Draw line end arrow.
// TODO: Draw line curve.
DrawLineInternal(dxf, _currentLayer, line.Style, line.IsStroked, _x1, _y1, _x2, _y2);
}
