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test: add testcases for Intersection of Circle2D with LIneSegment2D
- parallel to X-axis - parallel to Y-axis - general cases (eg. x-y+c=0) test: rename method's name
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‎src/Spatial.Tests/Euclidean/Circle2DTests.cs‎

Lines changed: 50 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -94,34 +94,77 @@ public void CircleIntersectWithLine2D(string sc, double radius, string sps, stri
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AssertGeometry.AreEqual(a, e, 1e-3); //needs to fix for the default tolerance
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}
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}
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//segment contains the all intersections(same to the cases of circle and line)
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//parallel to X-axis
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////segment contains the all intersections(same to the cases of circle and line)
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[TestCase("0,0", 1, "-10,+10", "+10,+10", "empty")]
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[TestCase("0,0", 1, "-10,+1", "+10,+1", "0,+1")]
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[TestCase("0,0", 1, "-10,0", "+10,0", "-1,0;+1,0")]
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[TestCase("0,0", 1, "-10,0", "+10,0", "+1,0;-1,0")]
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[TestCase("0,0", 1, "-10,-1", "+10,-1", "0,-1")]
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[TestCase("0,0", 1, "-10,-10", "+10,-10", "empty")]
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//segments cross the circle's contour just 1 time
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////segments cross the circle's contour just 1 time
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[TestCase("0,0", 1, "+0,+10", "+10,+10", "empty")]
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[TestCase("0,0", 1, "+0,+1", "+10,+1", "0,1")]
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[TestCase("0,0", 1, "+0,0", "+10,0", "1,0")]
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[TestCase("0,0", 1, "+0,-1", "+10,-1", "0,-1")]
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[TestCase("0,0", 1, "+0,-10", "+10,-10", "empty")]
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//segment contains no intersections(px of the startingPoint is too big to intersect with the circle)
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////segment contains no intersections(px of the startingPoint is too big to intersect with the circle)
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[TestCase("0,0", 1, "+10,+10", "+100,+10", "empty")]
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[TestCase("0,0", 1, "+10,+01", "+100,+1", "empty")]
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[TestCase("0,0", 1, "+10,+00", "+100,0", "empty")]
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[TestCase("0,0", 1, "+10,-01", "+100,-1", "empty")]
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[TestCase("0,0", 1, "+10,-10", "+100,-10", "empty")]
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public void CircleIntersectWithLineSegment2D_NumberOfIntersections(string sCenter, double radius, string sStart, string sEnd, string expectedIntersectionsAsString)
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//parallel to Y-axis
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////segment contains the all intersections(same to the cases of circle and line)
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[TestCase("0,0", 1, "-10,-10", "-10,+10", "empty")]
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[TestCase("0,0", 1, "-1,-10", "-1,+10", "-1,0")]
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[TestCase("0,0", 1, "0,-10", "0,+10", "0,+1;0,-1")]
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[TestCase("0,0", 1, "+1,-10", "+1,+10", "+1,0")]
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[TestCase("0,0", 1, "+10,-10", "+10,+10", "EMPTY")]
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////segments cross the circle's contour just 1 time
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[TestCase("0,0", 1, "+10,0", "+10,+10", "empty")]
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[TestCase("0,0", 1, "+1,0", "+1,+10", "+1,0")]
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[TestCase("0,0", 1, "0,0", "0,+10", "0,+1")]
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[TestCase("0,0", 1, "-1,0", "-1,+10", "-1,0")]
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[TestCase("0,0", 1, "-10,0", "-10,+10", "empty")]
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////segment contains no intersections(py of the startingPoint is too big to intersect with the circle)
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[TestCase("0,0", 1, "+10,+10", "+10,+100", "empty")]
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[TestCase("0,0", 1, "+01,+10", "+1,+100", "empty")]
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[TestCase("0,0", 1, "+00,+10", "0,+100", "empty")]
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[TestCase("0,0", 1, "-01,+10", "-1,+100", "empty")]
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[TestCase("0,0", 1, "-10,+10", "-10,+100", "empty")]
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//general cases
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////segment contains the all intersections(same to the cases of circle and line)
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[TestCase("0,0", 1, "-10,+10", "+10,+10", "empty")]
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[TestCase("0,0", 1, "-1.414213562373095,0", "0,+1.414213562373095", "-0.707,0.707")]
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[TestCase("0,0", 1, "-10,-10", "+10,+10", "+0.707,+0.707;-0.707,-0.707")]
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[TestCase("0,0", 1, "0,-1.41421356", "+1.41421356,0", "+0.707,-0.707")]
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[TestCase("0,0", 1, "0,-10", "+10,0", "empty")]
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////segments cross the circle's contour just 1 time
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[TestCase("0,0", 1, "+10,0", "+10,+10", "empty")]
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[TestCase("0,0", 1, "+1,0", "+1,+10", "+1,0")]
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[TestCase("0,0", 1, "0,0", "0,+10", "0,+1")]
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[TestCase("0,0", 1, "-1,0", "-1,+10", "-1,0")]
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[TestCase("0,0", 1, "-10,0", "-10,+10", "empty")]
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////segment contains no intersections(py of the startingPoint is too big to intersect with the circle)
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[TestCase("0,0", 1, "+10,+10", "+10,+100", "empty")]
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[TestCase("0,0", 1, "+01,+10", "+1,+100", "empty")]
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[TestCase("0,0", 1, "+00,+10", "0,+100", "empty")]
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[TestCase("0,0", 1, "-01,+10", "-1,+100", "empty")]
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[TestCase("0,0", 1, "-10,+10", "-10,+100", "empty")]
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public void CircleIntersectWithLineSegment2D(string sCenter, double radius, string sStart, string sEnd, string expectedIntersectionsAsString)
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{
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var circle = new Circle2D(Point2D.Parse(sCenter), radius);
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var segment = new LineSegment2D(Point2D.Parse(sStart), Point2D.Parse(sEnd));
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var actual = circle.IntersectWith(segment);
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var expected = parseToPointsArray(expectedIntersectionsAsString);
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CollectionAssert.AreEquivalent(expected, actual);
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for (int i = 0; i < Math.Min(actual.Length, expected.Length); i++)
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{
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var a = actual[i];
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var e = expected[i];
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AssertGeometry.AreEqual(a, e, 1e-3); //needs to fix for the default tolerance
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}
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}
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private Point2D[] parseToPointsArray(string input)

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