public void ComputeAreaOfTriangle_IgnoresTranslations(float area, Vector2[] triangle)
{
var translation = m_Rand.NextFloat2();
for (var i = 0; i < 3; i++)
{
triangle[i] = (Vector2)translation + triangle[i];
}
Assert.AreApproximatelyEqual(area,
ObjectPlacementUtilities.ComputeAreaOfTriangle(triangle[0], triangle[1], triangle[2]));
}
public void ComputeAreaOfTriangle_IgnoresZAxis(float area, Vector2[] triangle)
{
var triangle3d = new Vector3[3];
for (var i = 0; i < 3; i++)
{
triangle3d[i] = (Vector3)triangle[i] + m_Rand.NextFloat(-10f, 10f) * Vector3.forward;
}
Assert.AreApproximatelyEqual(area,
ObjectPlacementUtilities.ComputeAreaOfTriangle(triangle3d[0], triangle3d[1], triangle3d[2]));
}
public void ComputeAreaOfTriangle_IsOrderInvariant(float area, Vector2[] triangle)
{
Assert.AreApproximatelyEqual(area,
ObjectPlacementUtilities.ComputeAreaOfTriangle(triangle[0], triangle[1], triangle[2]));
Assert.AreApproximatelyEqual(area,
ObjectPlacementUtilities.ComputeAreaOfTriangle(triangle[0], triangle[2], triangle[1]));
Assert.AreApproximatelyEqual(area,
ObjectPlacementUtilities.ComputeAreaOfTriangle(triangle[1], triangle[0], triangle[2]));
Assert.AreApproximatelyEqual(area,
ObjectPlacementUtilities.ComputeAreaOfTriangle(triangle[1], triangle[2], triangle[0]));
Assert.AreApproximatelyEqual(area,
ObjectPlacementUtilities.ComputeAreaOfTriangle(triangle[2], triangle[1], triangle[0]));
Assert.AreApproximatelyEqual(area,
ObjectPlacementUtilities.ComputeAreaOfTriangle(triangle[2], triangle[0], triangle[1]));
}