def embed_label(model, face, side, label, glyph):
# transform face to shape (into which we will embed the label)
transform = MtxMath.conv_to_euclid(VecMath.rotate_fromto_matrix(face._norm, np.array([0., 0., 1.])))
vertices = [transform * euclid.Point3(v[0], v[1], v[2]) for v in face._vertices]
target_path = svg.Path.from_shape(svg.Shape([np.array([v[0], v[1]]) for v in vertices]))
# render label into path
label_path = svg.Path.combine([(glyph[int(c)], np.array([1., 0.])) for c in label])
# move/scale label to fit into target triangle
p, s, r = fit_rect_in_triangle(vertices, side, label_path._bbox)
label_path.scale(s[0], s[1])
pivot = label_path._bbox._center+np.array([0, label_path._bbox._size[1]*-.5])
label_path.rotate(r, anchor=pivot)
label_path.translate(p-pivot)
# embed the label
embedded_model = target_path.embed([label_path.triangulate(z=vertices[0].z)], group_name='svg', z=vertices[0].z)
embedded_model.transform(transform.inverse())
# (optional) extrude the label
embedded_model.get_group('svg')._material._diffuse = [1., 0., 0.]
embedded_model.extrude(-.5, faces=embedded_model.get_group('svg')._faces)
# replace initial face with new 'labeled face'
model.remove_face(face)
model.merge(embedded_model)
return embedded_model
def get_path_from_face(face):
transform = MtxMath.conv_to_euclid(
VecMath.rotate_fromto_matrix(face._norm, np.array([0., 0., 1.])))
vertices = [
transform * euclid.Point3(v[0], v[1], v[2]) for v in face._vertices
]
path = svg.Path.from_shape(
svg.Shape([np.array([v[0], v[1]]) for v in vertices]))
return path, transform
def test_get_rotation_mtx_equal_vecs(self):
""" edge case: would normaly break rot mtx. use identity mtx instead """
a = np.array([1., 0., 0.])
b = np.array([1., 0., 0.])
rot = VecMath.rotate_fromto_matrix(a, b)
self.assertIsNotNone(rot)
a2 = rot.__matmul__(a)
self.assertEqual(VecMath.angle_between(a2, b), 0.0)
def test_get_rotation_mtx(self):
a = np.array([1., 0., 0.])
b = np.array([0., 1., 0.])
rot = VecMath.rotate_fromto_matrix(a, b)
self.assertIsNotNone(rot)
a2 = rot.__matmul__(a)
self.assertNotEqual(VecMath.angle_between(a, b), 0.0)
self.assertEqual(VecMath.angle_between(a2, b), 0.0)
def write(model, filename, orientation_vec=None):
"""Rotate and center object to lay flat on the heat-bead"""
model._update()
if orientation_vec is None:
transform = euclid.Matrix4.new_translate(-model._center[0],
-model._center[1],
-model._center[2])
else:
transform = MtxMath.conv_to_euclid(
VecMath.rotate_fromto_matrix(orientation_vec,
np.array([0., 0., -1.])))
n = transform * euclid.Point3(-model._center[0], -model._center[1],
-model._center[2])
transform = euclid.Matrix4.new_translate(n.x, n.y, n.z) * transform
write_obj(model, filename, transform=transform)
model.merge(embedded_model)
return embedded_model
if __name__ == "__main__":
radius = 100.
sphere = primitives.Sphere(radius)
obj_model = sphere.triangulate(recursion_level=2)
for iter in range(0,4):
print(f'noise iteration({iter})')
for idx, vertex in enumerate(obj_model._vertices):
l = min([edge.length for edge in obj_model.get_edges_with_vertex(idx)]) * .1
rnd_d = get_random_norm()
dir = VecMath.unit_vector(vertex)
transf = MtxMath.conv_to_euclid(VecMath.rotate_fromto_matrix(np.array([0., 0., 1.]), dir))
tv = transf * (rnd_d*euclid.Vector3(l,l,10))
vertex += tv
# sphere_model.triangulate()
ObjExporter.write(obj_model, f'./export/_sphere_noise.obj')
print(f'Faces: {len(obj_model._faces)}')
print(f'Vertices: {len(obj_model._vertices)}')
bbox_size = obj_model._size
print(f'Boundingbox: [{bbox_size[0]}, {bbox_size[1]}, {bbox_size[2]}]')
target_lid_size = 100. #mm^2
faceted_model = Model()
facets = []
d = euclid.Vector3(random.uniform(0, 1), random.uniform(0, 1),
0.).normalize()
# d = euclid.Vector3(0., 0., 0.)
# d.x = random.uniform(-1, 1)
# d.y = random.uniform(-1, 1)
# d.z = random.uniform(-.1, .1)
# d.z = 1.
return d
if __name__ == "__main__":
radius = 100.
sphere = primitives.Sphere(radius)
sphere_model = sphere.triangulate(recursion_level=2)
for iter in range(0, 4):
print(f'noise iteration({iter})')
for idx, vertex in enumerate(sphere_model._vertices):
l = min([
edge.length for edge in sphere_model.get_edges_with_vertex(idx)
]) * .1
rnd_d = get_random_norm()
dir = vm.unit_vector(vertex)
transf = MtxMath.conv_to_euclid(
vm.rotate_fromto_matrix(np.array([0., 0., 1.]), dir))
tv = transf * (rnd_d * euclid.Vector3(l, l, 10))
vertex += tv
# sphere_model.triangulate()
ObjExporter.write(sphere_model, f'./export/_sphere_noise.obj')