public void DegeneratePolygons()
{
var polygon = new double[][][] {
new double[][] {
new double[] { 0, 0 },
new double[] { 1, 0 },
new double[] { 2, 0 },
new double[] { 0, 0 }
}
};
var polylabel = Polylabel.GetPolylabel(polygon);
Assert.Equal(new double[] { 0, 0 }, polylabel);
polygon = new double[][][] {
new double[][] {
new double[] { 0, 0 },
new double[] { 1, 0 },
new double[] { 1, 1 },
new double[] { 1, 0 },
new double[] { 0, 0 }
}
};
polylabel = Polylabel.GetPolylabel(polygon);
Assert.Equal(new double[] { 0, 0 }, polylabel);
}
public void PolylabelJson(string fileName, double expectedX, double expectedY)
{
var jsonString = File.ReadAllText(fileName);
var polygon = JsonConvert.DeserializeObject <double[][][]>(jsonString);
var center = Polylabel.GetPolylabel(polygon, debug: true);
Assert.Equal(expectedX, center[0]);
Assert.Equal(expectedY, center[1]);
}
public void ThrowsExceptionForIncompletePolygon()
{
var empty = new Polygon(new List <Vertex>());
var onePoint = new Polygon(new[] { new Vertex(0, 0) });
var twoPoints = new Polygon(new[] { new Vertex(0, 0), new Vertex(1, 1) });
Assert.That(() => Polylabel.ComputeLabelPosition(empty), Throws.TypeOf(typeof(ArgumentOutOfRangeException)));
Assert.That(() => Polylabel.ComputeLabelPosition(onePoint), Throws.TypeOf(typeof(ArgumentOutOfRangeException)));
Assert.That(() => Polylabel.ComputeLabelPosition(twoPoints), Throws.TypeOf(typeof(ArgumentOutOfRangeException)));
}
public void IsCorrectForTriangle()
{
var triangle = new Polygon(new Vertex[] {
new Vertex(0, 0),
new Vertex(100, 0),
new Vertex(50, 100)
});
Vertex result = Polylabel.ComputeLabelPosition(triangle);
Assert.That(result.X, Is.EqualTo(50).Within(1E-6), "Polylabel for triangle failed: {0}", nameof(result.X));
Assert.That(result.Y, Is.EqualTo(30.901700).Within(1E-6), "Polylabel for triangle failed: {0}", nameof(result.Y));
}
