public void VertexTransformation()
{
var directionHelper = DirectionRotatorExtensions.Create();
//Should rotate 90 degrees about the x axis
var quat = directionHelper.GetRotationQuat(new VoxelRotation()
{
x = 1
});
var testVector = new float3(0, 1, 0);
//Should become 0,0,1
var result = math.round(math.mul(quat, testVector));
Assert.AreEqual(new float3(0, 0, 1), result);
//Should rotate 180 degress around x then 90 around z
quat = directionHelper.GetRotationQuat(new VoxelRotation()
{
x = 2, z = 1
});
result = math.round(math.mul(quat, testVector));
Assert.AreEqual(new float3(1, 0, 0), result);
directionHelper.Dispose();
}
public void Inverse()
{
using (var directionHelper = DirectionRotatorExtensions.Create())
{
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 4; j++)
{
for (int k = 0; k < 4; k++)
{
var rotation = new VoxelRotation()
{
x = i, y = j, z = k
};
var testDirection = Direction.north;
var thereAndBackAgain = directionHelper.GetDirectionBeforeRotation(directionHelper.GetDirectionAfterRotation(testDirection, rotation), rotation);
Assert.AreEqual(testDirection, thereAndBackAgain, $"Failed to invert rotation {rotation}");
}
}
}
}
}