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Use ipydatawidgets.NDArrayWidget #1

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1 change: 1 addition & 0 deletions requirements.txt
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
xarray
numpy>=1.17
ipygany
ipydatawidgets
ipywidgets
ipython
23 changes: 14 additions & 9 deletions src/ipyfastscape/topoviz3d.py
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
from typing import Callable

import ipywidgets as widgets
from ipydatawidgets import NDArrayWidget
from ipygany import Component, IsoColor, PolyMesh, Scene, WarpByScalar

from .common import AppComponent, Coloring, VizApp
Expand Down Expand Up @@ -41,11 +42,13 @@ def _reset_canvas(self):
elev_da = self.dataset._widgets.elevation
elev_min = elev_da.min()
elev_max = elev_da.max()
elev_arr = self.dataset._widgets.current_elevation.values

self.warp_data = NDArrayWidget(self.dataset._widgets.current_elevation.values)
self.color_data = NDArrayWidget(self.dataset._widgets.current_color.values)

data = {
'color': [Component(name='value', array=elev_arr, min=elev_min, max=elev_max)],
'warp': [Component(name='value', array=elev_arr, min=elev_min, max=elev_max)],
'color': [Component(name='value', array=self.color_data, min=elev_min, max=elev_max)],
'warp': [Component(name='value', array=self.warp_data, min=elev_min, max=elev_max)],
}

self.polymesh = PolyMesh(vertices=vertices, triangle_indices=triangle_indices, data=data)
Expand All @@ -54,17 +57,19 @@ def _reset_canvas(self):
)
self.warp = WarpByScalar(self.isocolor, input='warp', factor=1)

# TODO: remove this when ipygany supports listening to NDArrayWidget.array changes
# see https://github.com/QuantStack/ipygany/issues/73
widgets.dlink((self.warp_data, 'array'), (self.polymesh[('warp', 'value')], 'array'))
widgets.dlink((self.color_data, 'array'), (self.polymesh[('color', 'value')], 'array'))

self.canvas = Scene([self.warp])

def _update_step(self):
new_warp_array = self.dataset._widgets.current_elevation.values
self.polymesh[('warp', 'value')].array = new_warp_array

new_color_array = self.dataset._widgets.current_color.values
self.polymesh[('color', 'value')].array = new_color_array
self.warp_data.array = self.dataset._widgets.current_elevation.values
self.color_data.array = self.dataset._widgets.current_color.values

def _update_scene_color_var(self):
self.polymesh[('color', 'value')].array = self.dataset._widgets.current_color
self.color_data.array = self.dataset._widgets.current_color

def _update_scene_color_range(self, da):
self.isocolor.min = da.min()
Expand Down