public void LwPolylineWithLargeArcTest1()
{
var vertices = new List <DxfLwPolylineVertex>()
{
new DxfLwPolylineVertex()
{
X = 0.6802950090711775, Y = 1.360590018142377, Bulge = 1.523362963416235
},
new DxfLwPolylineVertex()
{
X = 1.176774337206015, Y = 0.2152040759172933
}
};
var poly = new DxfLwPolyline(vertices);
var path = poly.GetSvgPath();
Assert.Equal(2, path.Segments.Count);
var move = (SvgMoveToPath)path.Segments[0];
AssertClose(0.6802950090711775, move.LocationX);
AssertClose(1.360590018142377, move.LocationY);
var arc = (SvgArcToPath)path.Segments[1];
AssertClose(1.176774337206015, arc.EndPointX);
AssertClose(0.2152040759172933, arc.EndPointY);
AssertClose(0.68029500907118867, arc.RadiusX);
AssertClose(0.68029500907118867, arc.RadiusY);
Assert.True(arc.IsCounterClockwiseSweep);
Assert.True(arc.IsLargeArc);
Assert.Equal(0.0, arc.XAxisRotation);
}
public void LwPolylineWithLargeArcTest2()
{
var vertices = new List <DxfLwPolylineVertex>()
{
new DxfLwPolylineVertex()
{
X = 1.176774337206015, Y = 0.2152040759172933, Bulge = -0.1085213126826841
},
new DxfLwPolylineVertex()
{
X = 1.501796342836956, Y = 0.2867624159371331
}
};
var poly = new DxfLwPolyline(vertices);
var path = poly.GetSvgPath();
Assert.Equal(2, path.Segments.Count);
var move = (SvgMoveToPath)path.Segments[0];
AssertClose(1.176774337206015, move.LocationX);
AssertClose(0.2152040759172933, move.LocationY);
var arc = (SvgArcToPath)path.Segments[1];
AssertClose(1.501796342836956, arc.EndPointX);
AssertClose(0.2867624159371331, arc.EndPointY);
AssertClose(0.77571287053371341, arc.RadiusX);
AssertClose(0.77571287053371341, arc.RadiusY);
Assert.False(arc.IsCounterClockwiseSweep);
Assert.False(arc.IsLargeArc);
Assert.Equal(0.0, arc.XAxisRotation);
}
public static XElement ToXElement(this DxfLwPolyline poly)
{
var path = poly.GetSvgPath();
return(new XElement(DxfToSvgConverter.Xmlns + "path",
new XAttribute("d", path.ToString()),
new XAttribute("fill-opacity", 0))
.AddStroke(poly.Color)
.AddStrokeWidth(1.0)
.AddVectorEffect());
}
public void RenderOpenLwPolylineTest()
{
// 1,1 D
// ------------- 2,1 C
// |
// /
// ____________-
// 0,0 1,0
// A B
var bulge90Degrees = Math.Sqrt(2.0) - 1.0;
var vertices = new List <DxfLwPolylineVertex>()
{
new DxfLwPolylineVertex()
{
X = 0.0, Y = 0.0
}, // A
new DxfLwPolylineVertex()
{
X = 1.0, Y = 0.0, Bulge = bulge90Degrees
}, // B
new DxfLwPolylineVertex()
{
X = 2.0, Y = 1.0
}, // C
new DxfLwPolylineVertex()
{
X = 1.0, Y = 1.0, Bulge = bulge90Degrees
} // D
};
var poly = new DxfLwPolyline(vertices);
poly.IsClosed = false;
var path = poly.GetSvgPath();
Assert.Equal(4, path.Segments.Count);
var start = (SvgMoveToPath)path.Segments[0];
AssertClose(0.0, start.LocationX);
AssertClose(0.0, start.LocationY);
var segmentAB = (SvgLineToPath)path.Segments[1];
AssertClose(1.0, segmentAB.LocationX);
AssertClose(0.0, segmentAB.LocationY);
var segmentBC = (SvgArcToPath)path.Segments[2];
AssertClose(2.0, segmentBC.EndPointX);
AssertClose(1.0, segmentBC.EndPointY);
AssertClose(1.0, segmentBC.RadiusX);
AssertClose(1.0, segmentBC.RadiusY);
AssertClose(0.0, segmentBC.XAxisRotation);
Assert.False(segmentBC.IsLargeArc);
Assert.True(segmentBC.IsCounterClockwiseSweep);
var segmentCD = (SvgLineToPath)path.Segments[3];
AssertClose(1.0, segmentCD.LocationX);
AssertClose(1.0, segmentCD.LocationY);
var expected = new XElement("path",
new XAttribute("d", path.ToString()),
new XAttribute("fill-opacity", "0"),
new XAttribute("stroke-width", "1.0px"),
new XAttribute("vector-effect", "non-scaling-stroke"));
var actual = poly.ToXElement();
AssertXElement(expected, actual);
}