add pygfx as a "full" variant dependency

conda/environment.full.yml

@@ -4,3 +4,4 @@ dependencies:
   - jupyterlab
   - pythreejs
   - pyparsing
+  - pygfx

src/ada/api/spatial/part.py

@@ -737,7 +737,7 @@ def to_fem_obj(
             if interactive is True:
                 gs.open_gui()
 
-            fem = gs.get_fem(name=name if name is not None else self.name)
+            fem = gs.get_fem(name=name if name is not None else f"{self.name}-FEM")
 
         for mass_shape in masses:
             cog_absolute = mass_shape.placement.get_absolute_placement().origin + mass_shape.cog

src/ada/visit/render_pygfx.py

@@ -25,11 +25,11 @@
 
     import ada.visit.render_pygfx_helpers as gfx_utils
 except ImportError:
-    raise ImportError("Please install pygfx to use this renderer -> 'pip install pygfx'.")
+    raise ImportError("Please install pygfx to use this renderer -> 'mamba install pygfx'.")
 try:
     from wgpu.gui.auto import WgpuCanvas
 except ImportError:
-    raise ImportError("Please install wgpu to use this renderer -> 'pip install wgpu'.")
+    raise ImportError("Please install wgpu to use this renderer -> 'mamba install wgpu'.")
 
 from ada.visit.render_backend import (
     MeshInfo,
@@ -43,9 +43,8 @@
 
 
 class RendererPyGFX:
-    def __init__(self, render_backend: RenderBackend, canvas_title: str = "PyGFX Renderer"):
+    def __init__(self, render_backend=SqLiteBackend(), canvas_title: str = "PyGFX Renderer", no_gui: bool = False):
         self.backend = render_backend
-
         self._mesh_map = {}
         self._selected_mat = gfx.MeshPhongMaterial(color=PICKED_COLOR, flat_shading=True)
         self.selected_mesh = None
@@ -58,9 +57,13 @@ def __init__(self, render_backend: RenderBackend, canvas_title: str = "PyGFX Ren
         self._scene_objects.receive_shadow = True
         self._scene_objects.cast_shadow = True
         self.scene.add(self._scene_objects)
+        if no_gui:
+            self._canvas = None
+            self._renderer = None
+        else:
+            self._canvas = WgpuCanvas(title=canvas_title, max_fps=60)
+            self._renderer = gfx.renderers.WgpuRenderer(self._canvas, show_fps=False)
 
-        self._canvas = WgpuCanvas(title=canvas_title, max_fps=60)
-        self._renderer = gfx.renderers.WgpuRenderer(self._canvas, show_fps=False)
         self.before_render = None
         self.after_render = None
         self.on_click_pre: Callable[[gfx.PointerEvent], None] | None = None

src/ada/visit/render_pygfx_helpers.py

@@ -11,6 +11,7 @@
     cone_geometry,
 )
 from pygfx.utils import Color
+from ada.visit.colors import Color as AdaColor
 
 from ada.visit.gltf.meshes import MeshStore
 
@@ -220,6 +221,9 @@ def geometry_from_mesh(
 def gfx_mesh_from_mesh(
     mesh: trimesh.Trimesh | trimesh.path.Path3D | MeshStore, material=None
 ) -> gfx.Mesh | gfx.Points | gfx.Line:
+    default_point_color = AdaColor.from_str("black")
+    default_line_color = AdaColor.from_str("gray")
+
     if isinstance(mesh, MeshStore):
         mat = tri_mat_to_gfx_mat(mesh.visual.material)
         geom = gfx.Geometry(
@@ -229,7 +233,10 @@ def gfx_mesh_from_mesh(
         mesh = gfx.Mesh(geom, material=mat)
     elif isinstance(mesh, trimesh.points.PointCloud):
         geom = gfx.Geometry(positions=np.ascontiguousarray(mesh.vertices, dtype="f4"))
-        mat = gfx.PointsMaterial(size=10, color=mesh.visual.main_color)
+        # if hasattr(mesh, "visual"):
+        #     mat = gfx.PointsMaterial(size=10, color=mesh.visual.main_color)
+        # else:
+        mat = gfx.PointsMaterial(size=10, color=Color(*default_point_color.rgb))
         mesh = gfx.Points(geom, material=mat)
     elif isinstance(mesh, trimesh.path.Path3D):
         indices = np.ascontiguousarray(mesh.vertex_nodes, dtype="i4")
@@ -240,7 +247,10 @@ def gfx_mesh_from_mesh(
             positions[i + 1] = mesh.vertices[p2]
             i += 2
         geom = gfx.Geometry(positions=positions)
-        mat = gfx.LineSegmentMaterial(thickness=3, color=mesh.visual.main_color)
+        if hasattr(mesh, "visual"):
+            mat = gfx.LineSegmentMaterial(thickness=3, color=mesh.visual.main_color)
+        else:
+            mat = gfx.LineSegmentMaterial(thickness=3, color=Color(*default_line_color.rgb))
         mesh = gfx.Line(geom, material=mat)
     else:
         geom = gfx.Geometry(

tests/full/rendering_pygfx/test_read_scene.py

@@ -0,0 +1,14 @@
+import ada
+from ada.visit.render_pygfx import RendererPyGFX
+
+
+def test_read_fem_object():
+    bm = ada.Beam('bm', (0, 0, 0), (1, 0, 0), 'IPE300')
+    p = ada.Part('part') / bm
+    p.fem = p.to_fem_obj(0.1, 'line')
+    a = ada.Assembly() / p
+    a.to_gltf('beam_wMesh.glb')
+
+    renderer = RendererPyGFX(no_gui=True)
+    renderer.add_trimesh_scene(a.to_trimesh_scene(), 'myFEM')
+