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@@ -10,3 +10,13 @@ media/gif_export_video.gif filter=lfs diff=lfs merge=lfs -text
 media/interactive_window_example.gif filter=lfs diff=lfs merge=lfs -text
 media/mp4_export_video.gif filter=lfs diff=lfs merge=lfs -text
 media/multiple_characters_example.gif filter=lfs diff=lfs merge=lfs -text
+outputs_gradio/garlic_out/image.png filter=lfs diff=lfs merge=lfs -text
+outputs_gradio/garlic_out/video.gif filter=lfs diff=lfs merge=lfs -text
+outputs_gradio/Screenshot[[:space:]]2024-12-04[[:space:]]at[[:space:]]2.47.07 AM_out/image.png filter=lfs diff=lfs merge=lfs -text
+outputs_gradio/Screenshot[[:space:]]2024-12-04[[:space:]]at[[:space:]]2.47.07 AM_out/joint_overlay.png filter=lfs diff=lfs merge=lfs -text
+outputs_gradio/Screenshot[[:space:]]2024-12-04[[:space:]]at[[:space:]]2.47.07 AM_out/texture.png filter=lfs diff=lfs merge=lfs -text
+outputs_gradio/Screenshot[[:space:]]2024-12-04[[:space:]]at[[:space:]]2.47.07 AM_out/video.gif filter=lfs diff=lfs merge=lfs -text
+outputs_gradio/Screenshot[[:space:]]2024-12-04[[:space:]]at[[:space:]]2.52.46 AM_out/video.gif filter=lfs diff=lfs merge=lfs -text
+outputs_gradio/Screenshot[[:space:]]2024-12-04[[:space:]]at[[:space:]]2.54.12 AM_out/video.gif filter=lfs diff=lfs merge=lfs -text
+outputs_gradio/webcam_out/image.png filter=lfs diff=lfs merge=lfs -text
+outputs_gradio/webcam_out/video.gif filter=lfs diff=lfs merge=lfs -text

outputs_gradio/Screenshot 2024-12-04 at 2.47.07 AM_out/bounding_box.yaml

@@ -0,0 +1,4 @@
+bottom: 973
+left: 94
+right: 584
+top: 55

outputs_gradio/Screenshot 2024-12-04 at 2.47.07 AM_out/char_cfg.yaml

@@ -0,0 +1,83 @@
+height: 918
+skeleton:
+- loc:
+  - 249
+  - 679
+  name: root
+  parent: null
+- loc:
+  - 249
+  - 679
+  name: hip
+  parent: root
+- loc:
+  - 254
+  - 383
+  name: torso
+  parent: hip
+- loc:
+  - 249
+  - 186
+  name: neck
+  parent: torso
+- loc:
+  - 160
+  - 383
+  name: right_shoulder
+  parent: torso
+- loc:
+  - 115
+  - 481
+  name: right_elbow
+  parent: right_shoulder
+- loc:
+  - 79
+  - 589
+  name: right_hand
+  parent: right_elbow
+- loc:
+  - 348
+  - 383
+  name: left_shoulder
+  parent: torso
+- loc:
+  - 384
+  - 490
+  name: left_elbow
+  parent: left_shoulder
+- loc:
+  - 429
+  - 598
+  name: left_hand
+  parent: left_elbow
+- loc:
+  - 187
+  - 679
+  name: right_hip
+  parent: root
+- loc:
+  - 187
+  - 786
+  name: right_knee
+  parent: right_hip
+- loc:
+  - 187
+  - 894
+  name: right_foot
+  parent: right_knee
+- loc:
+  - 312
+  - 679
+  name: left_hip
+  parent: root
+- loc:
+  - 321
+  - 777
+  name: left_knee
+  parent: left_hip
+- loc:
+  - 321
+  - 885
+  name: left_foot
+  parent: left_knee
+width: 490

outputs_gradio/Screenshot 2024-12-04 at 2.47.07 AM_out/mvc_cfg.yaml

@@ -0,0 +1,10 @@
+controller:
+  MODE: video_render
+  OUTPUT_VIDEO_PATH: "/Users/gauravyadav/AnimatedDrawings/outputs_gradio/Screenshot\
+    \ 2024-12-04 at 2.47.07\u202FAM_out/video.gif"
+scene:
+  ANIMATED_CHARACTERS:
+  - character_cfg: "/Users/gauravyadav/AnimatedDrawings/outputs_gradio/Screenshot\
+      \ 2024-12-04 at 2.47.07\u202FAM_out/char_cfg.yaml"
+    motion_cfg: /Users/gauravyadav/AnimatedDrawings/examples/config/motion/dab.yaml
+    retarget_cfg: /Users/gauravyadav/AnimatedDrawings/examples/config/retarget/fair1_ppf.yaml

outputs_gradio/Screenshot 2024-12-04 at 2.52.46 AM_out/bounding_box.yaml

@@ -0,0 +1,4 @@
+bottom: 686
+left: 24
+right: 435
+top: 44

outputs_gradio/Screenshot 2024-12-04 at 2.52.46 AM_out/char_cfg.yaml

@@ -0,0 +1,83 @@
+height: 642
+skeleton:
+- loc:
+  - 227
+  - 453
+  name: root
+  parent: null
+- loc:
+  - 227
+  - 453
+  name: hip
+  parent: root
+- loc:
+  - 234
+  - 205
+  name: torso
+  parent: hip
+- loc:
+  - 221
+  - 98
+  name: neck
+  parent: torso
+- loc:
+  - 184
+  - 205
+  name: right_shoulder
+  parent: torso
+- loc:
+  - 108
+  - 249
+  name: right_elbow
+  parent: right_shoulder
+- loc:
+  - 39
+  - 299
+  name: right_hand
+  parent: right_elbow
+- loc:
+  - 284
+  - 205
+  name: left_shoulder
+  parent: torso
+- loc:
+  - 328
+  - 280
+  name: left_elbow
+  parent: left_shoulder
+- loc:
+  - 372
+  - 355
+  name: left_hand
+  parent: left_elbow
+- loc:
+  - 171
+  - 450
+  name: right_hip
+  parent: root
+- loc:
+  - 158
+  - 525
+  name: right_knee
+  parent: right_hip
+- loc:
+  - 140
+  - 606
+  name: right_foot
+  parent: right_knee
+- loc:
+  - 284
+  - 456
+  name: left_hip
+  parent: root
+- loc:
+  - 278
+  - 531
+  name: left_knee
+  parent: left_hip
+- loc:
+  - 265
+  - 613
+  name: left_foot
+  parent: left_knee
+width: 411

outputs_gradio/Screenshot 2024-12-04 at 2.52.46 AM_out/mvc_cfg.yaml

@@ -0,0 +1,10 @@
+controller:
+  MODE: video_render
+  OUTPUT_VIDEO_PATH: "/Users/gauravyadav/AnimatedDrawings/outputs_gradio/Screenshot\
+    \ 2024-12-04 at 2.52.46\u202FAM_out/video.gif"
+scene:
+  ANIMATED_CHARACTERS:
+  - character_cfg: "/Users/gauravyadav/AnimatedDrawings/outputs_gradio/Screenshot\
+      \ 2024-12-04 at 2.52.46\u202FAM_out/char_cfg.yaml"
+    motion_cfg: /Users/gauravyadav/AnimatedDrawings/examples/config/motion/dab.yaml
+    retarget_cfg: /Users/gauravyadav/AnimatedDrawings/examples/config/retarget/fair1_ppf.yaml

outputs_gradio/Screenshot 2024-12-04 at 2.54.12 AM_out/bounding_box.yaml

@@ -0,0 +1,4 @@
+bottom: 689
+left: 30
+right: 437
+top: 35

outputs_gradio/Screenshot 2024-12-04 at 2.54.12 AM_out/char_cfg.yaml

@@ -0,0 +1,83 @@
+height: 654
+skeleton:
+- loc:
+  - 226
+  - 461
+  name: root
+  parent: null
+- loc:
+  - 226
+  - 461
+  name: hip
+  parent: root
+- loc:
+  - 232
+  - 222
+  name: torso
+  parent: hip
+- loc:
+  - 219
+  - 113
+  name: neck
+  parent: torso
+- loc:
+  - 181
+  - 222
+  name: right_shoulder
+  parent: torso
+- loc:
+  - 111
+  - 260
+  name: right_elbow
+  parent: right_shoulder
+- loc:
+  - 34
+  - 311
+  name: right_hand
+  parent: right_elbow
+- loc:
+  - 283
+  - 222
+  name: left_shoulder
+  parent: torso
+- loc:
+  - 328
+  - 292
+  name: left_elbow
+  parent: left_shoulder
+- loc:
+  - 366
+  - 369
+  name: left_hand
+  parent: left_elbow
+- loc:
+  - 168
+  - 458
+  name: right_hip
+  parent: root
+- loc:
+  - 156
+  - 535
+  name: right_knee
+  parent: right_hip
+- loc:
+  - 136
+  - 618
+  name: right_foot
+  parent: right_knee
+- loc:
+  - 283
+  - 464
+  name: left_hip
+  parent: root
+- loc:
+  - 277
+  - 547
+  name: left_knee
+  parent: left_hip
+- loc:
+  - 264
+  - 624
+  name: left_foot
+  parent: left_knee
+width: 407

outputs_gradio/Screenshot 2024-12-04 at 2.54.12 AM_out/mvc_cfg.yaml

@@ -0,0 +1,10 @@
+controller:
+  MODE: video_render
+  OUTPUT_VIDEO_PATH: "/Users/gauravyadav/AnimatedDrawings/outputs_gradio/Screenshot\
+    \ 2024-12-04 at 2.54.12\u202FAM_out/video.gif"
+scene:
+  ANIMATED_CHARACTERS:
+  - character_cfg: "/Users/gauravyadav/AnimatedDrawings/outputs_gradio/Screenshot\
+      \ 2024-12-04 at 2.54.12\u202FAM_out/char_cfg.yaml"
+    motion_cfg: /Users/gauravyadav/AnimatedDrawings/examples/config/motion/dab.yaml
+    retarget_cfg: /Users/gauravyadav/AnimatedDrawings/examples/config/retarget/fair1_ppf.yaml

outputs_gradio/garlic_out/bounding_box.yaml

@@ -0,0 +1,4 @@
+bottom: 782
+left: 118
+right: 635
+top: 187

outputs_gradio/garlic_out/char_cfg.yaml

@@ -0,0 +1,83 @@
+height: 595
+skeleton:
+- loc:
+  - 289
+  - 422
+  name: root
+  parent: null
+- loc:
+  - 289
+  - 422
+  name: hip
+  parent: root
+- loc:
+  - 289
+  - 166
+  name: torso
+  parent: hip
+- loc:
+  - 289
+  - 227
+  name: neck
+  parent: torso
+- loc:
+  - 154
+  - 173
+  name: right_shoulder
+  parent: torso
+- loc:
+  - 107
+  - 139
+  name: right_elbow
+  parent: right_shoulder
+- loc:
+  - 67
+  - 99
+  name: right_hand
+  parent: right_elbow
+- loc:
+  - 423
+  - 159
+  name: left_shoulder
+  parent: torso
+- loc:
+  - 450
+  - 112
+  name: left_elbow
+  parent: left_shoulder
+- loc:
+  - 471
+  - 59
+  name: left_hand
+  parent: left_elbow
+- loc:
+  - 201
+  - 422
+  name: right_hip
+  parent: root
+- loc:
+  - 195
+  - 489
+  name: right_knee
+  parent: right_hip
+- loc:
+  - 181
+  - 563
+  name: right_foot
+  parent: right_knee
+- loc:
+  - 376
+  - 422
+  name: left_hip
+  parent: root
+- loc:
+  - 390
+  - 483
+  name: left_knee
+  parent: left_hip
+- loc:
+  - 403
+  - 543
+  name: left_foot
+  parent: left_knee
+width: 517

outputs_gradio/garlic_out/mvc_cfg.yaml

@@ -0,0 +1,8 @@
+controller:
+  MODE: video_render
+  OUTPUT_VIDEO_PATH: /Users/gauravyadav/AnimatedDrawings/outputs_gradio/garlic_out/video.gif
+scene:
+  ANIMATED_CHARACTERS:
+  - character_cfg: /Users/gauravyadav/AnimatedDrawings/outputs_gradio/garlic_out/char_cfg.yaml
+    motion_cfg: /Users/gauravyadav/AnimatedDrawings/examples/config/motion/dab.yaml
+    retarget_cfg: /Users/gauravyadav/AnimatedDrawings/examples/config/retarget/fair1_ppf.yaml

outputs_gradio/webcam_out/bounding_box.yaml

@@ -0,0 +1,4 @@
+bottom: 705
+left: 280
+right: 527
+top: 443

outputs_gradio/webcam_out/char_cfg.yaml

@@ -0,0 +1,83 @@
+height: 262
+skeleton:
+- loc:
+  - 112
+  - 215
+  name: root
+  parent: null
+- loc:
+  - 112
+  - 215
+  name: hip
+  parent: root
+- loc:
+  - 135
+  - 181
+  name: torso
+  parent: hip
+- loc:
+  - 122
+  - 113
+  name: neck
+  parent: torso
+- loc:
+  - 41
+  - 203
+  name: right_shoulder
+  parent: torso
+- loc:
+  - 22
+  - 136
+  name: right_elbow
+  parent: right_shoulder
+- loc:
+  - 29
+  - 168
+  name: right_hand
+  parent: right_elbow
+- loc:
+  - 228
+  - 158
+  name: left_shoulder
+  parent: torso
+- loc:
+  - 234
+  - 158
+  name: left_elbow
+  parent: left_shoulder
+- loc:
+  - 234
+  - 168
+  name: left_hand
+  parent: left_elbow
+- loc:
+  - 74
+  - 213
+  name: right_hip
+  parent: root
+- loc:
+  - 67
+  - 226
+  name: right_knee
+  parent: right_hip
+- loc:
+  - 64
+  - 242
+  name: right_foot
+  parent: right_knee
+- loc:
+  - 151
+  - 216
+  name: left_hip
+  parent: root
+- loc:
+  - 154
+  - 229
+  name: left_knee
+  parent: left_hip
+- loc:
+  - 154
+  - 248
+  name: left_foot
+  parent: left_knee
+width: 247

outputs_gradio/webcam_out/mvc_cfg.yaml

@@ -0,0 +1,8 @@
+controller:
+  MODE: video_render
+  OUTPUT_VIDEO_PATH: /Users/gauravyadav/AnimatedDrawings/outputs_gradio/webcam_out/video.gif
+scene:
+  ANIMATED_CHARACTERS:
+  - character_cfg: /Users/gauravyadav/AnimatedDrawings/outputs_gradio/webcam_out/char_cfg.yaml
+    motion_cfg: /Users/gauravyadav/AnimatedDrawings/examples/config/motion/dab.yaml
+    retarget_cfg: /Users/gauravyadav/AnimatedDrawings/examples/config/retarget/fair1_ppf.yaml

tests/test_animated_drawing.py

@@ -0,0 +1,27 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+from animated_drawings.model.animated_drawing import AnimatedDrawing
+from animated_drawings.config import Config
+from pkg_resources import resource_filename
+
+
+def test_init():
+    import OpenGL.GL as GL
+    import glfw
+    glfw.init()
+    glfw.window_hint(glfw.CONTEXT_VERSION_MAJOR, 3)
+    glfw.window_hint(glfw.CONTEXT_VERSION_MINOR, 3)
+    glfw.window_hint(glfw.OPENGL_FORWARD_COMPAT, GL.GL_TRUE)
+    glfw.window_hint(glfw.OPENGL_PROFILE, glfw.OPENGL_CORE_PROFILE)
+    win = glfw.create_window(100, 100, 'Viewer', None, None)
+    glfw.make_context_current(win)
+
+    mvc_cfg_fn = resource_filename(__name__, 'test_animated_drawing_files/test_mvc.yaml')
+    mvc_config = Config(mvc_cfg_fn)
+    char_cfg, retarget_cfg, motion_cfg = mvc_config.scene.animated_characters[0]
+
+    AnimatedDrawing(char_cfg, retarget_cfg, motion_cfg)
+
+    assert True

tests/test_animated_drawing_files/test_mvc.yaml

@@ -0,0 +1,5 @@
+scene:
+  ANIMATED_CHARACTERS:
+    - character_cfg: examples/characters/char2/char_cfg.yaml
+      motion_cfg: examples/config/motion/jumping_jacks.yaml
+      retarget_cfg: examples/config/retarget/cmu1_pfp.yaml

tests/test_arap.py

@@ -0,0 +1,116 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+import numpy as np
+from animated_drawings.model.arap import ARAP, plot_mesh
+
+
+def test_single_triangle_mesh():
+    show_plots = False  # Make true if you'd like to see mesh viz during test run
+    vertices = np.array([
+        [2.0, 2.0],
+        [3.0, 3.0],
+        [4.0, 2.0]
+    ])
+
+    triangles = np.array([
+        [0, 1, 2]
+    ], np.int32)
+
+    pins_xy = np.array([[2.0, 2.0], [4.0, 2.0]])
+    if show_plots:
+        plot_mesh(vertices, triangles, pins_xy)
+    arap = ARAP(pins_xy, triangles=triangles, vertices=vertices)
+
+    pins_xy = np.array([[-5.0, 0.0], [5.0, 0.0]])
+    v = arap.solve(pins_xy)
+    if show_plots:
+        plot_mesh(v, triangles, pins_xy)
+
+    assert np.isclose(v, np.array([
+        [-5.0, 0.0],
+        [0.0, 1.0],
+        [5.0, 0.0]
+    ])).all()
+
+
+def test_two_triangle_mesh():
+    show_plots = False  # Make true if you'd like to see mesh viz during test run
+    vertices = np.array([
+        [1.0, 0.0],
+        [1.0, 1.0],
+        [2.0, 1.0],
+        [2.0, 0.0],
+    ])
+
+    triangles = np.array([
+        [0, 1, 2],
+        [0, 2, 3],
+    ], np.int32)
+
+    pins_xy = np.array([[1.0, 0.0], [2.0, 0.0]])
+    new = ARAP(pins_xy, triangles=triangles, vertices=vertices)
+    if show_plots:
+        plot_mesh(vertices, triangles, pins_xy)
+
+    pins_xy = np.array([[1.0, 0.0], [1.7, 0.7]])
+    v = new.solve(pins_xy)
+    if show_plots:
+        plot_mesh(v, triangles, pins_xy)
+
+    assert np.isclose(v, np.array([
+        [9.99999989e-01, -1.13708135e-08],
+        [2.91471856e-01,  7.05685418e-01],
+        [9.97157285e-01,  1.41137085e+00],
+        [1.70000001e+00,  7.00000011e-01]
+    ])).all()
+
+
+def test_four_triangle_mesh():
+    show_plots = False  # Make true if you'd like to see mesh viz during test run
+    vertices = np.array([
+        [0.0, 0.0],
+        [0.0, 1.0],
+        [1.0, 1.0],
+        [1.0, 0.0],
+        [2.0, 1.0],
+        [2.0, 0.0],
+        [0.0, 2.0],
+        [1.0, 2.0],
+        [2.0, 2.0],
+    ])
+
+    triangles = np.array([
+        [0, 1, 2],
+        [0, 2, 3],
+        [3, 2, 4],
+        [3, 4, 5],
+
+        [1, 6, 7],
+        [1, 7, 2],
+        [2, 7, 8],
+        [2, 8, 4]
+    ], np.int32)
+
+    pins_xy = np.array([[0.0, 0.0], [0.0, 2.0], [2.0, 0.0]])
+    if show_plots:
+        plot_mesh(vertices, triangles, pins_xy)
+    new = ARAP(pins_xy, triangles=triangles, vertices=vertices)
+
+    new_pins_xy = np.array([[0.0, 0.0], [0.0, 3.0], [6.0, 0.0]])
+    v = new.solve(new_pins_xy)
+    if show_plots:
+        plot_mesh(v, triangles, new_pins_xy)
+
+    assert np.isclose(v, np.array([
+        [3.19325865e-06, 1.08194488e-06],
+        [6.78428061e-01, 1.37166545e+00],
+        [2.14606263e+00, 1.19790398e+00],
+        [2.81917351e+00, 1.12790606e-02],
+        [3.95163838e+00, 1.34725960e+00],
+        [5.99999596e+00, 5.51801260e-07],
+        [8.44193478e-07, 2.99999837e+00],
+        [1.46633111e+00, 2.60720416e+00],
+        [2.82413859e+00, 2.62209072e+00]
+    ])).all()

tests/test_bvh.py

@@ -0,0 +1,32 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+from animated_drawings.model.bvh import BVH
+from pkg_resources import resource_filename
+
+
+def test_bvh_from_file():
+    bvh_fn = resource_filename(__name__, 'test_bvh_files/zombie.bvh')
+    b = BVH.from_file(bvh_fn)
+
+    # was the skeleton built correctly?
+    assert b.root_joint.joint_count() == 34
+
+    # did frame_time parse correctly?
+    assert b.frame_time == 0.0333333
+
+    # did frame num parse correctly?
+    assert b.frame_max_num == 779
+
+    # there should be root position data for each frame
+    assert b.frame_max_num == b.pos_data.shape[0]
+    # and it should be an xzy coordinate
+    assert b.pos_data.shape[-1] == 3
+
+    # there should be rotation data for each frame
+    assert b.frame_max_num == b.rot_data.shape[0]
+    # there should be a rotation for every joint within that frame
+    assert b.rot_data.shape[1] == b.root_joint.joint_count()
+    # and the rotation is a quaternion with dimensionality of 4
+    assert b.rot_data.shape[-1] == 4

tests/test_quaternions.py

@@ -0,0 +1,67 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+from animated_drawings.model.quaternions import Quaternions
+from animated_drawings.model.vectors import Vectors
+import numpy as np
+
+
+def test_not_four_elements():
+    try:
+        Quaternions(np.array([0, 1, 2]))  # should fail
+    except AssertionError:
+        return
+    assert False
+
+
+def test_initialize_with_ndarray():
+    q = Quaternions(np.array([1, 0, 0, 0]))  # should succeed
+    assert np.array_equal(q.qs, np.array([[1, 0, 0, 0]]))
+
+
+def test_from_angle_axis():
+    angle = np.array([1.0])
+    axis = Vectors(np.array([1.0, 1.0, 1.0]))
+    q6 = Quaternions.from_angle_axis(angle, axis)
+    assert np.allclose(q6.qs,  np.array(
+        [[0.87758256, 0.27679646, 0.27679646, 0.27679646]]))
+
+
+def test_multiple_from_angle_axis():
+    angles = np.array([[1.0], [1.0]])
+    axis = Vectors(
+        np.array([[1.0, 1.0, 1.0], [1.0, 1.0, 1.0]], dtype=np.float32))
+    q1 = Quaternions.from_angle_axis(angles, axis)
+    assert np.allclose(q1.qs,  np.array([
+        [0.87758256, 0.27679646, 0.27679646, 0.27679646],
+        [0.87758256, 0.27679646, 0.27679646, 0.27679646]]))
+
+
+def test_to_rotation_matrix():
+    angles = np.array([[np.pi / 2]])
+    axis = Vectors(np.array([1.0, 0.0, 0.0], dtype=np.float32))
+    q1 = Quaternions.from_angle_axis(angles, axis)
+    assert np.allclose(q1.to_rotation_matrix(), np.array([
+        [1.000000e+00,  0.000000e+00,  0.000000e+00,  0.000000e+00],
+        [0.000000e+00,  0.000000e+00, -1.000000e+00,  0.000000e+00],
+        [0.000000e+00,  1.000000e+00,  0.000000e+00,  0.000000e+00],
+        [0.000000e+00,  0.000000e+00,  0.000000e+00,  1.000000e+00]]))
+
+
+def test_from_rotation_matrix():
+    angles = np.array([[np.pi / 2]])
+    axis = np.array([1.0, 1.0, 0.0], dtype=np.float32)
+    q1 = Quaternions.from_angle_axis(angles, Vectors(axis))
+    q2 = Quaternions.from_rotation_matrix(q1.to_rotation_matrix())
+    assert np.allclose(q1.qs, q2.qs)
+
+
+def test_to_euler_angles():
+    # TODO add test coverage for from_euler_angles
+    pass
+
+
+def test_multiply():
+    # TODO add test coverage for quaternion multiplication
+    pass

tests/test_render.py

@@ -0,0 +1,32 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+from animated_drawings import render
+from pkg_resources import resource_filename
+import os
+import pytest
+
+
+@pytest.mark.skipif(os.environ.get('IS_CI_RUNNER') == 'True', reason='skipping video rendering for CI/CD')
+def test_render_gif():
+    render_gif_cfg_fn = resource_filename(__name__, 'test_render_files/mvc_render_gif.yaml')
+
+    render.start(render_gif_cfg_fn)
+
+    assert os.path.exists('.tests/test_render_files/video.gif')
+    assert os.path.getsize('.tests/test_render_files/video.gif') > 100
+
+    os.remove('.tests/test_render_files/video.gif')
+
+
+@pytest.mark.skipif(os.environ.get('IS_CI_RUNNER') == 'True', reason='skipping video rendering for CI/CD')
+def test_render_mp4():
+    render_mp4_cfg_fn = resource_filename(__name__, 'test_render_files/mvc_render_mp4.yaml')
+
+    render.start(render_mp4_cfg_fn)
+
+    assert os.path.exists('.tests/test_render_files/video.mp4')
+    assert os.path.getsize('.tests/test_render_files/video.mp4') > 100
+
+    os.remove('.tests/test_render_files/video.mp4')

tests/test_render_files/char1/char_cfg.yaml

@@ -0,0 +1,83 @@
+height: 602
+skeleton:
+- loc:
+  - 264
+  - 397
+  name: root
+  parent: null
+- loc:
+  - 264
+  - 397
+  name: hip
+  parent: root
+- loc:
+  - 247
+  - 232
+  name: torso
+  parent: hip
+- loc:
+  - 231
+  - 119
+  name: neck
+  parent: torso
+- loc:
+  - 151
+  - 245
+  name: right_shoulder
+  parent: torso
+- loc:
+  - 99
+  - 278
+  name: right_elbow
+  parent: right_shoulder
+- loc:
+  - 46
+  - 311
+  name: right_hand
+  parent: right_elbow
+- loc:
+  - 343
+  - 218
+  name: left_shoulder
+  parent: torso
+- loc:
+  - 396
+  - 245
+  name: left_elbow
+  parent: left_shoulder
+- loc:
+  - 449
+  - 278
+  name: left_hand
+  parent: left_elbow
+- loc:
+  - 191
+  - 404
+  name: right_hip
+  parent: root
+- loc:
+  - 165
+  - 476
+  name: right_knee
+  parent: right_hip
+- loc:
+  - 138
+  - 556
+  name: right_foot
+  parent: right_knee
+- loc:
+  - 337
+  - 390
+  name: left_hip
+  parent: root
+- loc:
+  - 376
+  - 456
+  name: left_knee
+  parent: left_hip
+- loc:
+  - 409
+  - 549
+  name: left_foot
+  parent: left_knee
+width: 508