If I have a MIP volume of shape [10, 10, 10] and I pick the face of the volume towards the camera, it returns a pick index of [5, 4, 10]. I would expect it to return the z index as 9 and not 10. How do I interpret this?
To reproduce, run in an interactive session (such as ipython with %gui qt):
import pygfx
from rendercanvas.auto import RenderCanvas, loop
import numpy as np
vol = pygfx.Volume(
geometry=pygfx.Geometry(grid=np.ones((10, 10, 10), dtype=np.float32)),
material=pygfx.VolumeMipMaterial(pick_write=True)
)
canvas = RenderCanvas()
renderer = pygfx.WgpuRenderer(canvas)
disp = pygfx.show(vol, renderer=renderer, canvas=canvas)
loop.run()Pick the center of the canvas:
renderer.get_pick_info((320, 240))
Returns:
{'rgba': Color(1.0, 1.0, 1.0, 1.0),
'world_object': <pygfx.Volume at 0x7f39b09c6a50>,
'index': (5, 4, 10),
'voxel_coord': (-0.4929805285967168, 0.4923701397790392, -0.5)}Thanks! 😄
If I have a MIP volume of shape [10, 10, 10] and I pick the face of the volume towards the camera, it returns a pick index of [5, 4, 10]. I would expect it to return the z index as 9 and not 10. How do I interpret this?
To reproduce, run in an interactive session (such as ipython with
%gui qt):Pick the center of the canvas:
Returns:
{'rgba': Color(1.0, 1.0, 1.0, 1.0), 'world_object': <pygfx.Volume at 0x7f39b09c6a50>, 'index': (5, 4, 10), 'voxel_coord': (-0.4929805285967168, 0.4923701397790392, -0.5)}Thanks! 😄