feat: add example for settings

Author: seankmartin

examples/settings.py

@@ -0,0 +1,40 @@
+import neuroglancer
+import numpy as np
+
+from neuroglancer_utils.viewer_utils import (
+    launch_nglancer,
+    open_browser,
+)
+
+from time import sleep
+
+
+def add_image_layer(state):
+    data = np.full(shape=(10,) * 3, fill_value=255, dtype=np.uint8)
+    dimensions = neuroglancer.CoordinateSpace(
+        names=["x", "y", "z"], units="nm", scales=[1, 1, 1]
+    )
+    local_volume = neuroglancer.LocalVolume(data, dimensions)
+    state.layers["image"] = neuroglancer.ImageLayer(
+        source=local_volume,
+        volume_rendering=True,
+        shader="""
+void main() {
+    emitRGBA(vec4(1.0, 1.0, 1.0, 0.001));
+    }
+    """,
+    )
+    state.show_axis_lines = False
+    state.projection_scale = 1e-8
+    state.position = [5, 5, 5]
+    state.showSlices = True
+    state.hideCrossSectionBackground3D = True
+
+
+if __name__ == "__main__":
+    viewer = launch_nglancer()
+    open_browser(viewer, hang=False)
+    sleep(2)
+
+    with viewer.txn() as s:
+        add_image_layer(s)