internal override PathFigureCollection GetTransformedFigureCollection(Transform transform)
{
// Combine the transform argument with the internal transform
Matrix matrix = GetCombinedMatrix(transform);
// Get the figure collection
PathFigureCollection result;
if (matrix.IsIdentity)
{
// There is no need to transform, return the figure collection
result = Figures;
if (result == null)
{
result = new PathFigureCollection();
}
}
else
{
// Return a transformed copy of the figure collection
result = new PathFigureCollection();
PathFigureCollection figures = Figures;
int count = figures != null ? figures.Count : 0;
for (int i = 0; i < count; ++i)
{
PathFigure figure = figures.Internal_GetItem(i);
result.Add(figure.GetTransformedCopy(matrix));
}
}
Debug.Assert(result != null);
return(result);
}
internal override PathFigureCollection GetTransformedFigureCollection(Transform transform)
{
Point [] points = GetPointList();
// Get the combined transform argument with the internal transform
Matrix matrix = GetCombinedMatrix(transform);
if (!matrix.IsIdentity)
{
for (int i = 0; i < points.Length; i++)
{
points[i] *= matrix;
}
}
PathFigureCollection figureCollection = new PathFigureCollection();
figureCollection.Add(
new PathFigure(
points[0],
new PathSegment[] {
new BezierSegment(points[1], points[2], points[3], true, true),
new BezierSegment(points[4], points[5], points[6], true, true),
new BezierSegment(points[7], points[8], points[9], true, true),
new BezierSegment(points[10], points[11], points[12], true, true)
},
true
)
);
return(figureCollection);
}
/// <summary>
///
/// </summary>
public void AddGeometry(Geometry geometry)
{
if (geometry == null)
{
throw new System.ArgumentNullException("geometry");
}
if (geometry.IsEmpty())
{
return;
}
PathFigureCollection figureCollection = geometry.GetPathFigureCollection();
Debug.Assert(figureCollection != null);
PathFigureCollection figures = Figures;
if (figures == null)
{
figures = Figures = new PathFigureCollection();
}
for (int i = 0; i < figureCollection.Count; ++i)
{
figures.Add(figureCollection.Internal_GetItem(i));
}
}
internal override PathFigureCollection GetTransformedFigureCollection(Transform transform)
{
// Combine the transform argument with the internal transform
Transform combined = new MatrixTransform(GetCombinedMatrix(transform));
PathFigureCollection result = new PathFigureCollection();
GeometryCollection children = Children;
if (children != null)
{
for (int i = 0; i < children.Count; i++)
{
PathFigureCollection pathFigures = children.Internal_GetItem(i).GetTransformedFigureCollection(combined);
if (pathFigures != null)
{
int count = pathFigures.Count;
for (int j = 0; j < count; ++j)
{
result.Add(pathFigures[j]);
}
}
}
}
return(result);
}
/// <summary>
/// Returns a Windows Media Path Geometry from a Rhinocommon Arc
/// </summary>
/// <param name="input">Rhinocommon Arc</param>
/// <returns>System Windows Media Path Geometry</returns>
public static Sm.PathGeometry ToGeometry(this Rg.Arc input)
{
Sm.ArcSegment arc = new Sm.ArcSegment();
Sm.PathFigure figure = new Sm.PathFigure();
Sm.PathGeometry geometry = new Sm.PathGeometry();
Sm.PathFigureCollection figureCollection = new Sm.PathFigureCollection();
Sm.PathSegmentCollection segmentCollection = new Sm.PathSegmentCollection();
figure.StartPoint = input.StartPoint.ToWindowsPoint();
arc.Point = input.EndPoint.ToWindowsPoint();
arc.Size = new Sw.Size(input.Radius, input.Radius);
if (Rg.Vector3d.VectorAngle(input.Plane.Normal, Rg.Vector3d.ZAxis) > 0)
{
arc.SweepDirection = Sm.SweepDirection.Counterclockwise;
}
else
{
arc.SweepDirection = Sm.SweepDirection.Clockwise;
}
arc.IsLargeArc = (input.Angle > Math.PI);
segmentCollection.Add(arc);
figure.Segments = segmentCollection;
figureCollection.Add(figure);
geometry.Figures = figureCollection;
return(geometry);
}
/// <summary>
/// 直接根据视图位置,绘制WPF封闭区域;
/// </summary>
/// <param name="screenPoints"></param>
/// <param name="brush"></param>
/// <param name="pen"></param>
private void NativeDrawFill(IEnumerable <Point> screenPoints, SystemMedia.Brush brush, SystemMedia.Pen pen)
{
if (screenPoints == null)
{
throw new ArgumentNullException(nameof(screenPoints));
}
if (pen == null)
{
throw new ArgumentNullException(nameof(pen));
}
ValidateDrawingContext();
pen.Freeze();
//操作SystemMedia.PathGeometry中的Figures以绘制(封闭)区域
var paths = new SystemMedia.PathGeometry();
var pfc = new SystemMedia.PathFigureCollection();
var pf = new SystemMedia.PathFigure();
pfc.Add(pf);
//存储一个点表示当前的PathFigure的StartPoint是否被指定;
var startPointSet = false;
foreach (var p in screenPoints)
{
//若StartPoint未被设定(第一个节点),设定后继续下一次循环;
if (!startPointSet)
{
pf.StartPoint = p;
startPointSet = true;
continue;
}
//若若StartPoint被设定,则加入线段;
var ps = new SystemMedia.LineSegment();
ps.Point = p;
pf.Segments.Add(ps);
}
pf.IsClosed = true;
paths.Figures = pfc;
DrawingContext.DrawGeometry(brush, pen, paths);
}
/// <summary>
/// Returns a Windows Media Path Geometry from a Rhinocommon Polyline
/// </summary>
/// <param name="input">Rhinocommon Polyline</param>
/// <returns>System Windows Media Path Geometry</returns>
public static Sm.PathGeometry ToGeometry(this Rg.Polyline input)
{
Sm.PathFigure figure = new Sm.PathFigure();
Sm.PathGeometry geometry = new Sm.PathGeometry();
Sm.PathFigureCollection figureCollection = new Sm.PathFigureCollection();
Sm.PathSegmentCollection segmentCollection = new Sm.PathSegmentCollection();
figure.StartPoint = input[0].ToWindowsPoint();
for (int i = 1; i < input.Count; i++)
{
Sm.LineSegment line = new Sm.LineSegment(input[i].ToWindowsPoint(), true);
segmentCollection.Add(line);
}
figure.Segments = segmentCollection;
figureCollection.Add(figure);
geometry.Figures = figureCollection;
return(geometry);
}
internal override PathFigureCollection GetTransformedFigureCollection(Transform transform)
{
// This is lossy for consistency with other GetPathFigureCollection() implementations
// however this limitation doesn't otherwise need to exist for LineGeometry.
Point startPoint = StartPoint;
Point endPoint = EndPoint;
// Apply internal transform
Transform internalTransform = Transform;
if (internalTransform != null && !internalTransform.IsIdentity)
{
Matrix matrix = internalTransform.Value;
startPoint *= matrix;
endPoint *= matrix;
}
// Apply external transform
if (transform != null && !transform.IsIdentity)
{
Matrix matrix = transform.Value;
startPoint *= matrix;
endPoint *= matrix;
}
PathFigureCollection collection = new PathFigureCollection();
collection.Add(
new PathFigure(
startPoint,
new PathSegment[] { new LineSegment(endPoint, true) },
false // ==> not closed
)
);
return(collection);
}
/// <summary>
/// Equilateral triangle of side 'sideLength', centered on the same point as if a circle of diameter 'sideLength' was there
/// </summary>
private static XamlMedia.PathGeometry CreateTriangle(double sideLength)
{
var altitude = Math.Sqrt(3) / 2.0 * sideLength;
var inradius = altitude / 3.0;
var circumradius = 2.0 * inradius;
var top = new XamlPoint(0, -circumradius);
var left = new XamlPoint(sideLength * -0.5, inradius);
var right = new XamlPoint(sideLength * 0.5, inradius);
var segments = new XamlMedia.PathSegmentCollection();
segments.Add(new XamlMedia.LineSegment(left, true));
segments.Add(new XamlMedia.LineSegment(right, true));
var figure = new XamlMedia.PathFigure(top, segments, true);
var figures = new XamlMedia.PathFigureCollection();
figures.Add(figure);
return(new XamlMedia.PathGeometry
{
Figures = figures
});
}
/// <summary>
/// Returns a Windows Media Bezier Spline Path Geometry from a Rhinocommon Curve
/// </summary>
/// <param name="input">Rhinocommon Curve</param>
/// <returns>System Windows Media Bezier Curve Path Geometry </returns>
public static Sm.PathGeometry ToGeometry(this Rg.Curve input)
{
Rg.NurbsCurve nurbsCurve = input.ToNurbsCurve();
nurbsCurve.MakePiecewiseBezier(true);
Rg.BezierCurve[] bezier = Rg.BezierCurve.CreateCubicBeziers(nurbsCurve, 0, 0);
Sm.PathFigure figure = new Sm.PathFigure();
Sm.PathGeometry geometry = new Sm.PathGeometry();
Sm.PathFigureCollection figureCollection = new Sm.PathFigureCollection();
Sm.PathSegmentCollection segmentCollection = new Sm.PathSegmentCollection();
figure.StartPoint = bezier[0].GetControlVertex3d(0).ToWindowsPoint();
for (int i = 0; i < bezier.Count(); i++)
{
Sm.BezierSegment segment = new Sm.BezierSegment(bezier[i].GetControlVertex3d(1).ToWindowsPoint(), bezier[i].GetControlVertex3d(2).ToWindowsPoint(), bezier[i].GetControlVertex3d(3).ToWindowsPoint(), true);
segmentCollection.Add(segment);
}
figure.Segments = segmentCollection;
figureCollection.Add(figure);
geometry.Figures = figureCollection;
return(geometry);
}
internal override PathFigureCollection GetTransformedFigureCollection(Transform transform)
{
if (IsEmpty())
{
return(null);
}
// Combine the transform argument with the internal transform
Matrix matrix = GetCombinedMatrix(transform);
double radiusX = RadiusX;
double radiusY = RadiusY;
Rect rect = Rect;
if (IsRounded(radiusX, radiusY))
{
Point[] points = GetPointList(rect, radiusX, radiusY);
// Transform if applicable.
if (!matrix.IsIdentity)
{
for (int i = 0; i < points.Length; i++)
{
points[i] *= matrix;
}
}
PathFigureCollection collection = new PathFigureCollection();
collection.Add(
new PathFigure(
points[0],
new PathSegment[] {
new BezierSegment(points[1], points[2], points[3], true, true),
new LineSegment(points[4], true, true),
new BezierSegment(points[5], points[6], points[7], true, true),
new LineSegment(points[8], true, true),
new BezierSegment(points[9], points[10], points[11], true, true),
new LineSegment(points[12], true, true),
new BezierSegment(points[13], points[14], points[15], true, true)
},
true // closed
)
);
return(collection);
}
else
{
PathFigureCollection collection = new PathFigureCollection();
collection.Add(
new PathFigure(
rect.TopLeft * matrix,
new PathSegment[] {
new PolyLineSegment(
new Point[]
{
rect.TopRight *matrix,
rect.BottomRight *matrix,
rect.BottomLeft *matrix
},
true)
},
true // closed
)
);
return(collection);
}
}