public void Area_VertexVertexBulge()
{
var vertex0 = new Vertex(0, 2);
var vertex1 = new Vertex(2, 2);
const double bulgeValue = -0.5;
var testArc = new GeoArc(vertex0, vertex1, bulgeValue);
Assert.IsTrue(Math.Abs(testArc.Area - 0.6989) < GeoMath.Tolerance);
}
public void Build3VTests()
{
var vertex0 = new Vertex(0, 2);
var vertex1 = new Vertex(1, 2.5);
var vertex2 = new Vertex(2, 2);
var testArc = new GeoArc(vertex0, vertex1, vertex2);
Assert.IsTrue(Math.Abs(testArc.CenterVertex.X - 1) < GeoMath.Tolerance);
Assert.IsTrue(Math.Abs(testArc.CenterVertex.Y - 1.25) < GeoMath.Tolerance);
}
public void EndAngleTest_VertexVertexBulge()
{
var vertex0 = new Vertex(0, 2);
var vertex1 = new Vertex(2, 2);
const double bulgeValue = -0.5;
var testArc = new GeoArc(vertex0, vertex1, bulgeValue);
Assert.IsTrue(Math.Abs(
testArc.EndAngle - GeoMath.DegToRad(36.8699)) < GeoMath.Tolerance);
}
public void Area_CaarTest()
{
var centerVertex = new Vertex(1.0, 1.25);
var startAngle = GeoMath.DegToRad(36.8699);
var endAngle = GeoMath.DegToRad(143.1301);
const double radius = 1.25;
var testArc = new GeoArc(centerVertex, startAngle, endAngle, radius);
Assert.IsTrue(Math.Abs(testArc.Area - 0.6989) < GeoMath.Tolerance);
}
public void BulgeValue_CaarTest()
{
var centerVertex = new Vertex(1.0, 1.25);
var startAngle = GeoMath.DegToRad(36.8699);
var endAngle = GeoMath.DegToRad(143.1301);
var radius = 1.25;
var testArc = new GeoArc(centerVertex, startAngle, endAngle, radius);
Assert.IsTrue(Math.Abs(testArc.BulgeValue - (0.5)) < GeoMath.Tolerance);
}
public void MiddleVertexTest()
{
var vertex0 = new Vertex(0, 2);
var vertex1 = new Vertex(2, 2);
const double bulgeValue = -0.5;
var testArc = new GeoArc(vertex0, vertex1, bulgeValue);
Assert.IsTrue(Math.Abs(testArc.MiddleVertex.X - 1) < GeoMath.Tolerance);
Assert.IsTrue(Math.Abs(testArc.MiddleVertex.Y - 2.5) < GeoMath.Tolerance);
}
public void LengthTest_LengthShouldBe5p05832()
{
var vertex0 = new Vertex(13, 3.5);
var vertex1 = new Vertex(13, 0);
var bulgeValue = Math.Tan(GeoMath.DegToRad(164) / 4);
var testArc = new GeoArc(vertex0, vertex1, bulgeValue);
Debug.WriteLine($"The Total length of the Arc is {testArc.Length}");
Assert.IsTrue(Math.Abs(testArc.Length - 5.05832) < GeoMath.Tolerance);
}
// The GeoArc Backing Field
/// <inheritdoc />
/// <summary>
/// The <see cref="T:Dxflib.Entities.CircularArcBuffer" /> constructor
/// for the Arc Entity
/// </summary>
/// <param name="ab">The <see cref="T:Dxflib.Entities.CircularArcBuffer" /></param>
public CircularArc(CircularArcBuffer ab) : base(ab)
{
EntityType = ab.EntityType;
GeometricArc = new GeoArc(
new Vertex(ab.CenterPointX, ab.CenterPointY, ab.CenterPointZ),
GeoMath.DegToRad(ab.StartAngle),
GeoMath.DegToRad(ab.EndAngle),
ab.Radius
);
Thickness = ab.Thickness;
}
public void EndAngle_CaarTest_Changing()
{
var centerVertex = new Vertex(1.0, 1.25);
var startAngle = GeoMath.DegToRad(36.8699);
var endAngle = GeoMath.DegToRad(143.1301);
var radius = 1.25;
var testArc = new GeoArc(centerVertex, startAngle, endAngle, radius);
testArc.EndAngle = GeoMath.DegToRad(200);
Assert.IsTrue(Math.Abs(testArc.Vertex1.X - -0.1746) < GeoMath.Tolerance);
Assert.IsTrue(Math.Abs(testArc.Vertex1.Y - 0.8225) < GeoMath.Tolerance);
}
public void StartAngle_CaarTest_Changing()
{
var centerVertex = new Vertex(1.0, 1.25);
var startAngle = GeoMath.DegToRad(36.8699);
var endAngle = GeoMath.DegToRad(143.1301);
var radius = 1.25;
var testArc = new GeoArc(centerVertex, startAngle, endAngle, radius);
testArc.StartAngle = GeoMath.DegToRad(50);
Assert.IsTrue(Math.Abs(testArc.Vertex0.X - 1.8035) < GeoMath.Tolerance);
Assert.IsTrue(Math.Abs(testArc.Vertex0.Y - 2.2076) < GeoMath.Tolerance);
}
public void Vertex0AndVertex1_CaarTest()
{
var centerVertex = new Vertex(1.0, 1.25);
var startAngle = GeoMath.DegToRad(36.8699);
var endAngle = GeoMath.DegToRad(143.1301);
var radius = 1.25;
var testArc = new GeoArc(centerVertex, startAngle, endAngle, radius);
// Starting Vertex
Assert.IsTrue(Math.Abs(testArc.Vertex0.X - 2) < GeoMath.Tolerance);
Assert.IsTrue(Math.Abs(testArc.Vertex0.Y - 2) < GeoMath.Tolerance);
// Ending Vertex
Assert.IsTrue(Math.Abs(testArc.Vertex1.X) < GeoMath.Tolerance);
Assert.IsTrue(Math.Abs(testArc.Vertex1.Y - 2) < GeoMath.Tolerance);
}
public void GenericGeoPolylineTest_1Arc()
{
// Line 0
var v0 = new Vertex(3.5, 0);
var v1 = new Vertex(6, 0);
var l0 = new GeoLine(v0, v1);
Assert.IsTrue(Math.Abs(l0.Length - 2.5) < GeoMath.Tolerance);
// Line 1
var v2 = new Vertex(6, 2.5);
var l1 = new GeoLine(v1, v2);
Assert.IsTrue(Math.Abs(l1.Length - 2.5) < GeoMath.Tolerance);
// Arc
var centerPoint = new Vertex(4.75, 1.75);
var startAngle = GeoMath.DegToRad(30.964);
var endAngle = GeoMath.DegToRad(149.036);
const double radius = 1.4577;
var arc0 = new GeoArc(centerPoint, startAngle, endAngle, radius);
Assert.IsTrue(Math.Abs(arc0.Length - 3.0040) < GeoMath.Tolerance);
// Line 2
var v3 = new Vertex(3.5, 2.5);
var l2 = new GeoLine(v3, v0);
Assert.IsTrue(Math.Abs(l2.Length - 2.5) < GeoMath.Tolerance);
// GeoPolyline
var geoPolyline = new GeoPolyline(); // Initialized
// Adding sections to the GeoPolyline
geoPolyline.Add(l0);
geoPolyline.Add(l1);
geoPolyline.Add(arc0);
geoPolyline.Add(l2);
// Assert
Assert.IsTrue(Math.Abs(geoPolyline.Length - 10.5040) < GeoMath.Tolerance);
Assert.IsTrue(Math.Abs(geoPolyline.Area - 7.5021) < GeoMath.Tolerance);
}
