1 files changed, 0 insertions, 38 deletions
diff --git a/transform.py b/transform.py
deleted file mode 100644
index 299da46..0000000
--- a/transform.py
+++ /dev/null
@@ -1,38 +0,0 @@
-import numpy as np
-
-def make_rotation_matrix(phi, n):
-    """
-    Make the rotation matrix to rotate points through an angle `phi`
-    counter-clockwise around the axis `n` (when looking towards +infinity).
-
-    Source: Weissten, Eric W. "Rotation Formula." Mathworld.
-    """
-    n = np.asarray(n)/np.linalg.norm(n)
-    
-    return np.cos(phi)*np.identity(3) + (1-np.cos(phi))*np.outer(n,n) + \
-        np.sin(phi)*np.array([[0,n[2],-n[1]],[-n[2],0,n[0]],[n[1],-n[0],0]])
-
-def rotate(x, phi, n):
-    """
-    Rotate an array of points `x` through an angle phi counter-clockwise
-    around the axis `n` (when looking towards +infinity).
-    """
-    return np.inner(np.asarray(x),make_rotation_matrix(phi, n))
-
-def normalize(x):
-    "Returns unit vectors in the direction of `x`."
-    x = np.asarray(x)
-
-    if x.shape[-1] != 3:
-        raise ValueError('dimension of last axis must be 3.')
-
-    d = len(x.shape)
-
-    if d == 1:
-        norm = np.sqrt(x.dot(x))
-    elif d == 2:
-        norm = np.sqrt(np.sum(x*x, axis=1))[:,np.newaxis]
-    else:
-        raise ValueError('len(`x`.shape) must be zero or one.')
-
-    return x/norm