"""
Provides functionality to attach RGBA colors to a mesh data object for use with a
legacy isosurface renderer. The module operates by combining input colors with
an opacity value derived from a given view state and assigns the resultant RGBA
data to the mesh.
Functions:
- attach_rgba_colors_to_mesh: Processes color data and attaches RGBA colors to
mesh data.
"""
import numpy as np
from decologr import Decologr as log
from elmo.ui.state.view import ViewState
from numpy import ndarray
from picogl.renderer import MeshData
[docs]
def attach_rgba_colors_to_mesh(colors: ndarray, mesh_data: MeshData, view: ViewState):
"""Attach RGBA colors expected by legacy isosurface renderer"""
try:
opacity = 1.0 - float(view.connolly_surface_transparency)
rgba = np.hstack(
(
colors.astype(np.float32),
np.full((len(colors), 1), opacity, dtype=np.float32),
)
)
mesh_data.colors = rgba
log.info(
f"🎨 Connolly colors attached: {rgba.shape}",
scope="attach_rgba_colors_to_mesh",
)
except Exception as ex:
log.error(
f"Failed to attach Connolly RGBA colors: {ex}",
scope="attach_rgba_colors_to_mesh",
)