public void OverlapsLineSegment_Overlaid_LargeBothWays()
{
//assign
WLineSegment a = new WLineSegment(new WPoint(1, 0), new WPoint(4, 0));
WLineSegment b = new WLineSegment(new WPoint(0, 0), new WPoint(5, 0));
//act
bool result = a.Overlaps(b);
//assert
Assert.IsTrue(result);
}
public void GetIntersection_WLineSegment_Parallel_DifferentDirection_NoOverlap()
{
//arrange
Geometry.MarginOfError = 0.001;
Geometry.CoordinatePlane = Geometry.CoordinatePlanes.Screen;
WLineSegment a = new WLineSegment(new WPoint(0, 0), new WPoint(3, 0));
WLineSegment b = new WLineSegment(new WPoint(6, 0), new WPoint(4, 0));
//act
Intersection resultA = a.GetIntersection(b);
Intersection resultB = b.GetIntersection(a);
//assert
Assert.IsTrue(resultA.IsNone);
Assert.IsTrue(resultB.IsNone);
}
public void GetIntersection_WLineSegment_Parallel_SameDirection_OneEncompassingOverlap()
{
//arrange
Geometry.MarginOfError = 0.001;
Geometry.CoordinatePlane = Geometry.CoordinatePlanes.Screen;
WLineSegment a = new WLineSegment(new WPoint(0, 0), new WPoint(6, 0));
WLineSegment b = new WLineSegment(new WPoint(3, 0), new WPoint(4, 0));
//act
Intersection resultA = a.GetIntersection(b);
Intersection resultB = b.GetIntersection(a);
//assert
Assert.IsTrue(resultA.IsLineSegment);
Assert.IsTrue(resultB.IsLineSegment);
Assert.AreEqual(new WLineSegment(new WPoint(3, 0), new WPoint(4, 0)), resultA.LineSegment);
Assert.AreEqual(new WLineSegment(new WPoint(3, 0), new WPoint(4, 0)), resultB.LineSegment);
}
public void OverlapsWedge_CenterToEdge_True()
{
//assign
Geometry.MarginOfError = 0.000001;
Geometry.CoordinatePlane = Geometry.CoordinatePlanes.Screen;
WWedge a = new WWedge(new WCircle(new WPoint(3, 3), 3), -45, 45);
WLineSegment edgeA = a.LineEdges[1];
WPoint centerB = Geometry.PointOnLine(edgeA.A, edgeA.B, a.Circle.Radius * 0.25);
WWedge b = new WWedge(new WCircle(centerB, 3), 90, 120);
//account
Utilities.SaveDiagram(new IDraw[] { a, b }, nameof(TestWedge));
//act
bool result = a.Overlaps(b);
//assert
Assert.IsTrue(result);
}
public void OverlapsWedge_LineEdge_AdjacentExternal_True()
{
//assign
Geometry.MarginOfError = 0.000001;
Geometry.CoordinatePlane = Geometry.CoordinatePlanes.Screen;
WWedge a = new WWedge(new WCircle(new WPoint(2, 2), 2), 260, 280);
WLineSegment aEdge = new WLineSegment(a.Circle.Center, a.EndPoint);
WPoint centerB = Geometry.PointOnLine(a.Circle.Center, a.EndPoint, a.Circle.Radius * 0.25);
WCircle circleB = new WCircle(centerB, a.Circle.Radius * 1.5);
double startDegreesB = circleB.DegreesAtPoint(a.EndPoint);
WWedge b = new WWedge(circleB, startDegreesB, startDegreesB + 10);
//account
Utilities.SaveDiagram(new IDraw[] { a, b }, nameof(TestWedge));
//act
bool result = a.Overlaps(b);
//assert
Assert.IsTrue(result);
}
public void GetIntersectionPointsLineSegment_DoubleIntersection()
{
//assign
Geometry.MarginOfError = 0.01;
//(x - 2)^2 + (y + 3)^2 = 4
WCircle a = new WCircle(new WPoint(2, -3), 2);
//2x + 2y = -1
WLineSegment c = new WLineSegment(new WPoint(5, -11.0 / 2.0), new WPoint(0, -1.0 / 2.0));
//account
Utilities.SaveDiagram(new IDraw[] { a, c }, nameof(TestCircle));
//act
WPoint[] result = a.GetIntersectionPoints(c);
WPoint minResult = (result[0] < result[1]) ? result[0] : result[1];
WPoint maxResult = (minResult == result[0]) ? result[1] : result[0];
//assert
Assert.AreEqual(2, result.Length);
Assert.IsTrue(new WPoint(0.86, -1.36) == minResult);
Assert.IsTrue(new WPoint(3.64, -4.14) == maxResult);
}
