def test_create_unit_length_z_dtype(self):
result = vector3.create_unit_length_z(dtype=np.float32)
np.testing.assert_almost_equal(result, [0., 0., 1.], decimal=5)
self.assertTrue(result.dtype == np.float32)
import numpy as np
from pyrr import vector3, matrix33
from ..color import convert_color
from ..allocators.vertlists import VAO
from ..rect import ZRect
Z = vector3.create_unit_length_z()
def identity():
"""Return an identity transformation matrix."""
return np.identity(3, dtype='f4')
def bounds_from_verts(vertices: np.ndarray) -> ZRect:
"""Given an array of vertices, get the bounds of the object."""
# Ensure we only have 2D vertices
vertices = vertices[:, :2]
# Calculate the bounds
mins = np.min(vertices, axis=0)
maxs = np.max(vertices, axis=0)
return ZRect(mins, maxs - mins)
class Bounds:
"""Descriptor for a property that returns bounds based on vertices.
We compile an expression to access the vertices in order to be faster and
save code.
def test_create_unit_length_z_dtype(self):
result = vector3.create_unit_length_z(dtype=np.float32)
np.testing.assert_almost_equal(result, [0.,0.,1.], decimal=5)
self.assertTrue(result.dtype == np.float32)