public void PointAtDegrees_360()
{
//assign
WCircle a = new WCircle(new WPoint(0, 0), 1);
double degrees = 360;
//act
WPoint result = a.PointAtDegrees(degrees);
//assert
Assert.AreEqual(new WPoint(1, 0), result);
}
public void GetIntersectionPointsCircle_NoIntersection_SameX()
{
//assign
WCircle a = new WCircle(new WPoint(-2, 0), 1);
WCircle b = new WCircle(new WPoint(2, 0), 1);
//act
WPoint[] result = a.GetIntersectionPoints(b);
//assert
Assert.IsNull(result);
}
public void GetIntersectionPointsCircle_SingleIntersection_SameX_DiffRadius()
{
//assign
WCircle a = new WCircle(new WPoint(-2, 0), 2);
WCircle b = new WCircle(new WPoint(1, 0), 1);
//act
WPoint[] result = a.GetIntersectionPoints(b);
//assert
Assert.AreEqual(1, result.Length);
Assert.AreEqual(new WPoint(0, 0), result[0]);
}
public void PointAtDegrees_330()
{
//assign
Geometry.MarginOfError = 0.01;
WCircle a = new WCircle(new WPoint(0, 0), 1);
double degrees = 330;
//act
WPoint result = a.PointAtDegrees(degrees);
//assert
Assert.AreEqual(new WPoint(0.87, -0.5), result);
}
public void PointAtDegrees_135()
{
//assign
Geometry.MarginOfError = 0.01;
WCircle a = new WCircle(new WPoint(0, 0), 1);
double degrees = 135;
//act
WPoint result = a.PointAtDegrees(degrees);
//assert
Assert.AreEqual(new WPoint(-0.71, 0.71), result);
}
public void DegreesAtPoint_OnScreen_C()
{
//assign
Geometry.CoordinatePlane = Geometry.CoordinatePlanes.Screen;
Geometry.MarginOfError = 5;
WCircle circle = new WCircle(new WPoint(1737, 1730), 1);
WPoint lineEnd = new WPoint(1573, 1227);
//act
double degrees = circle.DegreesAtPoint(lineEnd);
//assert
Assert.IsTrue(Geometry.WithinMarginOfError(252, degrees));
}
public void DegreesAtPoint_OnScreen_B()
{
//assign
Geometry.CoordinatePlane = Geometry.CoordinatePlanes.Screen;
Geometry.MarginOfError = 5;
WCircle circle = new WCircle(new WPoint(2019, 866), 1);
WPoint lineEnd = new WPoint(1500, 1000);
//act
double degrees = circle.DegreesAtPoint(lineEnd);
//assert
Assert.IsTrue(Geometry.WithinMarginOfError(165, degrees));
}
public void DegreesAtPoint_OnScreen_A()
{
//assign
Geometry.CoordinatePlane = Geometry.CoordinatePlanes.Screen;
Geometry.MarginOfError = 0.1;
WCircle circle = new WCircle(new WPoint(0, 0), 1);
WPoint lineEnd = new WPoint(13, 22.5166604984);
//act
double degrees = circle.DegreesAtPoint(lineEnd);
//assert
Assert.IsTrue(Geometry.WithinMarginOfError(60, degrees));
}
public void GetIntersectionPointsLine_VerticalLine_A()
{
//assign
Geometry.MarginOfError = 0.01;
WCircle a = new WCircle(new WPoint(53.8075, 29.1875), 4.6825) / Utilities.UNITS_TO_PIXELS;
WLine b = new WLine(new WPoint(51.27, 25), new WPoint(51.27, 19.125)) / Utilities.UNITS_TO_PIXELS;
//account
Utilities.SaveDiagram(new IDraw[] { a, b.ToLineSegment() }, nameof(TestCircle));
//act
WPoint[] result = a.GetIntersectionPoints(b);
//assert
Assert.AreEqual(2, result.Length);
}
public void OverlapsCircle_Temp()
{
//assign
Geometry.MarginOfError = 0.000001;
Geometry.CoordinatePlane = Geometry.CoordinatePlanes.Screen;
WWedge a = new WWedge(new WCircle(new WPoint(550.83386399939, 0), 235.084533229311), 73.6363636363638, 90.0000000000002) / Utilities.UNITS_TO_PIXELS;
WCircle b = new WCircle(new WPoint(444.902178042324, 244.587042149464), 149.14086054459278) / Utilities.UNITS_TO_PIXELS;
//account
// Utilities.SaveDiagram(new IDraw[] { a, b }, nameof(TestWedge));
//act
bool result = a.Overlaps(b);
//assert
Assert.IsTrue(result);
}
public void OverlapsCircle_A_True()
{
//assign
Geometry.MarginOfError = 0.000001;
Geometry.CoordinatePlane = Geometry.CoordinatePlanes.Screen;
WCircle a = new WCircle(new WPoint(1342.5, 867.2), 187.338) / Utilities.UNITS_TO_PIXELS;
WWedge b = new WWedge(new WCircle(new WPoint(1170.45, 1133.45), 225.53), 631, 648) / Utilities.UNITS_TO_PIXELS;
//account
Utilities.SaveDiagram(new IDraw[] { a, b }, nameof(TestWedge));
//act
bool result = b.Overlaps(a);
//assert
Assert.IsTrue(result);
}
public void GetIntersectionPointsCircle_DoubleIntersection_SameX()
{
//assign
WCircle a = new WCircle(new WPoint(-0.5, 0), 1);
WCircle b = new WCircle(new WPoint(0.5, 0), 1);
//act
WPoint[] result = a.GetIntersectionPoints(b);
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.AreEqual(new WPoint(0, -0.5 * Math.Sqrt(3)), minResult);
Assert.AreEqual(new WPoint(0, 0.5 * Math.Sqrt(3)), maxResult);
}
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);
}
public void RadiansToDegrees()
{
//assign
double radiansA = 0;
double radiansB = Math.PI / 2;
double radiansC = Math.PI;
double radiansD = Math.PI + (Math.PI / 2);
double radiansE = 2 * Math.PI;
//act
double degreesA = WCircle.RadiansToDegrees(radiansA);
double degreesB = WCircle.RadiansToDegrees(radiansB);
double degreesC = WCircle.RadiansToDegrees(radiansC);
double degreesD = WCircle.RadiansToDegrees(radiansD);
double degreesE = WCircle.RadiansToDegrees(radiansE);
//assert
Assert.AreEqual(0, degreesA);
Assert.AreEqual(90, degreesB);
Assert.AreEqual(180, degreesC);
Assert.AreEqual(270, degreesD);
Assert.AreEqual(360, degreesE);
}
public void DegreesToRadians()
{
//assign
double degreesA = 0;
double degreesB = 90;
double degreesC = 180;
double degreesD = 270;
double degreesE = 360;
//act
double radiansA = WCircle.DegreesToRadians(degreesA);
double radiansB = WCircle.DegreesToRadians(degreesB);
double radiansC = WCircle.DegreesToRadians(degreesC);
double radiansD = WCircle.DegreesToRadians(degreesD);
double radiansE = WCircle.DegreesToRadians(degreesE);
//assert
Assert.AreEqual(0, radiansA);
Assert.AreEqual(Math.PI / 2, radiansB);
Assert.AreEqual(Math.PI, radiansC);
Assert.AreEqual(Math.PI + (Math.PI / 2), radiansD);
Assert.AreEqual(2 * Math.PI, radiansE);
}