def __init__(self, points, point_size=0.001, color='green'):
geometry = BufferGeometry(
attributes={
'position': BufferAttribute(array=points.astype(np.float32))
})
material = PointsMaterial(size=point_size, color=color)
Points.__init__(self, geometry=geometry, material=material)
def AddVerticesToScene(self, pnt_list, vertex_color, vertex_width=5):
""" shp is a list of gp_Pnt
"""
vertices_list = [] # will be passed to pythreejs
BB = BRep_Builder()
compound = TopoDS_Compound()
BB.MakeCompound(compound)
for vertex in pnt_list:
vertex_to_add = BRepBuilderAPI_MakeVertex(vertex).Shape()
BB.Add(compound, vertex_to_add)
vertices_list.append([vertex.X(), vertex.Y(), vertex.Z()])
# map the Points and the AIS_PointCloud
# and to the dict of shapes, to have a mapping between meshes and shapes
point_cloud_id = "%s" % uuid.uuid4().hex
self._shapes[point_cloud_id] = compound
vertices_list = np.array(vertices_list, dtype=np.float32)
attributes = {
"position": BufferAttribute(vertices_list, normalized=False)
}
mat = PointsMaterial(color=vertex_color,
sizeAttenuation=True,
size=vertex_width)
geom = BufferGeometry(attributes=attributes)
points = Points(geometry=geom, material=mat, name=point_cloud_id)
return points
def vertices_to_mesh(name, vertices, vertex_color, vertex_width=5):
"""
:param name:
:param vertices:
:param vertex_color: RGB tuple (r, g, b)
:param vertex_width:
:return:
:rtype: pythreejs.objects.Points_autogen.Points
"""
vertices = np.array(vertices, dtype=np.float32)
attributes = {"position": BufferAttribute(vertices, normalized=False)}
mat = PointsMaterial(color=format_color(*vertex_color),
sizeAttenuation=False,
size=vertex_width)
geom = BufferGeometry(attributes=attributes)
points = Points(geometry=geom, material=mat, name=name)
return points
def DisplayMesh(self,
part: "Part",
edge_color=None,
vertex_color=None,
vertex_width=2):
from OCC.Core.BRep import BRep_Builder
from OCC.Core.BRepBuilderAPI import BRepBuilderAPI_MakeVertex
from OCC.Core.gp import gp_Pnt
from OCC.Core.TopoDS import TopoDS_Compound
# edge_color = format_color(*part.colour) if edge_color is None else edge_color
rgb = randint(0, 255), randint(0, 255), randint(0, 255)
edge_color = format_color(*rgb) if edge_color is None else edge_color
vertex_color = self._default_vertex_color if vertex_color is None else vertex_color
pmesh_id = "%s" % uuid.uuid4().hex
BB = BRep_Builder()
compound = TopoDS_Compound()
BB.MakeCompound(compound)
vertices_list = []
def togp(n_):
return gp_Pnt(float(n_[0]), float(n_[1]), float(n_[2]))
for vertex in map(togp, part.fem.nodes):
vertex_to_add = BRepBuilderAPI_MakeVertex(vertex).Shape()
BB.Add(compound, vertex_to_add)
vertices_list.append([vertex.X(), vertex.Y(), vertex.Z()])
attributes = {
"position": BufferAttribute(vertices_list, normalized=False)
}
mat = PointsMaterial(color=vertex_color,
sizeAttenuation=False,
size=vertex_width)
geom = BufferGeometry(attributes=attributes)
points_geom = Points(geometry=geom, material=mat, name=pmesh_id)
lmesh_id = "%s" % uuid.uuid4().hex
edges_nodes = list(
chain.from_iterable(
filter(
None,
[get_vertices_from_elem(el) for el in part.fem.elements])))
np_edge_vertices = np.array(edges_nodes, dtype=np.float32)
np_edge_indices = np.arange(np_edge_vertices.shape[0], dtype=np.uint32)
vertex_col = tuple([x / 255 for x in rgb])
edge_geometry = BufferGeometry(
attributes={
"position": BufferAttribute(np_edge_vertices),
"index": BufferAttribute(np_edge_indices),
"color": BufferAttribute(
[vertex_col for n in np_edge_vertices]),
})
edge_material = LineBasicMaterial(vertexColors="VertexColors",
linewidth=5)
edge_geom = LineSegments(
geometry=edge_geometry,
material=edge_material,
type="LinePieces",
name=lmesh_id,
)
output = [points_geom, edge_geom]
for elem in output:
self._shapes[elem.name] = compound
self._refs[elem.name] = part
self._displayed_pickable_objects.add(elem)
self._fem_sets_opts.options = ["None"] + [
f"{part.fem.name}.{s.name}" for s in filter(
lambda x: "internal" not in x.metadata.keys(), part.fem.sets)
]
self._fem_refs[part.fem.name] = (part.fem, edge_geometry)
def _render_shape(self,
shape_index,
shape=None,
edges=None,
vertices=None,
mesh_color=None,
edge_color=None,
vertex_color=None,
render_edges=False,
edge_width=1,
vertex_width=5,
deflection=0.05,
transparent=False,
opacity=1.0):
edge_list = None
edge_lines = None
points = None
shape_mesh = None
if shape is not None:
if mesh_color is None:
mesh_color = self.default_mesh_color
if edge_color is None:
edge_color = self.default_edge_color
if vertex_color is None:
vertex_color = self.default_edge_color # same as edge_color
# BEGIN copy
# The next lines are copied with light modifications from
# https://github.com/tpaviot/pythonocc-core/blob/master/src/Display/WebGl/jupyter_renderer.py
# first, compute the tesselation
tess = Tesselator(shape)
tess.Compute(uv_coords=False,
compute_edges=render_edges,
mesh_quality=self.quality,
parallel=True)
# get vertices and normals
vertices_position = tess.GetVerticesPositionAsTuple()
number_of_triangles = tess.ObjGetTriangleCount()
number_of_vertices = len(vertices_position)
# number of vertices should be a multiple of 3
if number_of_vertices % 3 != 0:
raise AssertionError("Wrong number of vertices")
if number_of_triangles * 9 != number_of_vertices:
raise AssertionError("Wrong number of triangles")
# then we build the vertex and faces collections as numpy ndarrays
np_vertices = np.array(vertices_position, dtype='float32')\
.reshape(int(number_of_vertices / 3), 3)
# Note: np_faces is just [0, 1, 2, 3, 4, 5, ...], thus arange is used
np_faces = np.arange(np_vertices.shape[0], dtype='uint32')
# compute normals
np_normals = np.array(tess.GetNormalsAsTuple(),
dtype='float32').reshape(-1, 3)
if np_normals.shape != np_vertices.shape:
raise AssertionError("Wrong number of normals/shapes")
# build a BufferGeometry instance
shape_geometry = BufferGeometry(
attributes={
'position': BufferAttribute(np_vertices),
'index': BufferAttribute(np_faces),
'normal': BufferAttribute(np_normals)
})
shp_material = self._material(mesh_color,
transparent=True,
opacity=opacity)
shape_mesh = Mesh(geometry=shape_geometry,
material=shp_material,
name="mesh_%d" % shape_index)
if render_edges:
edge_list = list(
map(
lambda i_edge: [
tess.GetEdgeVertex(i_edge, i_vert)
for i_vert in range(
tess.ObjEdgeGetVertexCount(i_edge))
], range(tess.ObjGetEdgeCount())))
# END copy
if vertices is not None:
vertices_list = []
for vertex in vertices:
p = BRep_Tool.Pnt(vertex)
vertices_list.append((p.X(), p.Y(), p.Z()))
vertices_list = np.array(vertices_list, dtype=np.float32)
attributes = {
"position": BufferAttribute(vertices_list, normalized=False)
}
mat = PointsMaterial(color=vertex_color,
sizeAttenuation=False,
size=vertex_width)
geom = BufferGeometry(attributes=attributes)
points = Points(geometry=geom, material=mat)
if edges is not None:
edge_list = [discretize_edge(edge, deflection) for edge in edges]
if edge_list is not None:
edge_list = _flatten(list(map(_explode, edge_list)))
lines = LineSegmentsGeometry(positions=edge_list)
mat = LineMaterial(linewidth=edge_width, color=edge_color)
edge_lines = LineSegments2(lines,
mat,
name="edges_%d" % shape_index)
if shape_mesh is not None or edge_lines is not None or points is not None:
index_mapping = {"mesh": None, "edges": None, "shape": shape_index}
if shape_mesh is not None:
ind = len(self.pickable_objects.children)
self.pickable_objects.add(shape_mesh)
index_mapping["mesh"] = ind
if edge_lines is not None:
ind = len(self.pickable_objects.children)
self.pickable_objects.add(edge_lines)
index_mapping["edges"] = ind
if points is not None:
ind = len(self.pickable_objects.children)
self.pickable_objects.add(points)
index_mapping["mesh"] = ind
self.pick_mapping.append(index_mapping)
def DisplayMesh(self,
part,
edge_color=None,
vertex_color=None,
vertex_width=2):
"""
:param part:
:param edge_color:
:param vertex_color:
:param vertex_width:
:type part: ada.Part
"""
from itertools import chain
from random import randint
from OCC.Core.BRep import BRep_Builder
from OCC.Core.BRepBuilderAPI import BRepBuilderAPI_MakeVertex
from OCC.Core.gp import gp_Pnt
from OCC.Core.TopoDS import TopoDS_Compound
# edge_color = format_color(*part.colour) if edge_color is None else edge_color
edge_color = (format_color(randint(0, 255), randint(
0, 255), randint(0, 255)) if edge_color is None else edge_color)
vertex_color = self._default_vertex_color if vertex_color is None else vertex_color
pmesh_id = "%s" % uuid.uuid4().hex
BB = BRep_Builder()
compound = TopoDS_Compound()
BB.MakeCompound(compound)
vertices_list = []
def togp(n_):
return gp_Pnt(float(n_[0]), float(n_[1]), float(n_[2]))
for vertex in map(togp, part.fem.nodes):
vertex_to_add = BRepBuilderAPI_MakeVertex(vertex).Shape()
BB.Add(compound, vertex_to_add)
vertices_list.append([vertex.X(), vertex.Y(), vertex.Z()])
attributes = {
"position": BufferAttribute(vertices_list, normalized=False)
}
mat = PointsMaterial(color=vertex_color,
sizeAttenuation=False,
size=vertex_width)
geom = BufferGeometry(attributes=attributes)
points_geom = Points(geometry=geom, material=mat, name=pmesh_id)
def grab_nodes(el):
"""
:param el:
:type el: ada.fem.Elem
:return:
"""
if el.edges_seq is None:
return None
return [
part.fem.nodes.from_id(i).p for i in
[el.nodes[e].id for ed_seq in el.edges_seq for e in ed_seq]
]
lmesh_id = "%s" % uuid.uuid4().hex
edges_nodes = list(
chain.from_iterable(
filter(None, map(grab_nodes, part.fem.elements))))
np_edge_vertices = np.array(edges_nodes, dtype=np.float32)
np_edge_indices = np.arange(np_edge_vertices.shape[0], dtype=np.uint32)
edge_geometry = BufferGeometry(
attributes={
"position": BufferAttribute(np_edge_vertices),
"index": BufferAttribute(np_edge_indices),
})
edge_material = LineBasicMaterial(color=edge_color, linewidth=1)
edge_geom = LineSegments(
geometry=edge_geometry,
material=edge_material,
type="LinePieces",
name=lmesh_id,
)
output = [points_geom, edge_geom]
for elem in output:
self._shapes[elem.name] = compound
self._refs[elem.name] = part
self._displayed_pickable_objects.add(elem)
self._fem_sets_opts.options = ["None"] + [
s.name for s in filter(
lambda x: "internal" not in x.metadata.keys(), part.fem.sets)
]
def __init__(self,*args, **kwargs):
"""
There are several options for arguments this this function.
One positional array-like
Figure#scatter(np.random.randint(0, 10, (10, 3)))
Three positional list-likes
Figure#scatter(xs, ys, zs)
Three named list-likes
Figure#scatter(xs=[1, 2], ys=[2, 3], zs=[10, 20])
Three positional column names and a dataframe
Figure#scatter("x", "y", "depth", my_dataframe)
Arguments:
attenuate_size (False): Whether items further from
the camera should appear smaller
"""
super().__init__(**kwargs)
pts = None
if len(args) == 1:
if isinstance(args[0], (np.ndarray, Iterable)):
pts = np.asarray(args[0], dtype=np.float32)
if len(args) == 3 and isinstance(args[0], (list, np.ndarray)):
pts = np.asarray([i for i in zip(args[0], args[1], args[2])],dtype=np.float32)
if pts is None:
raise ValueError("Unsupported arguments to scatter.")
self._coords = pts
color = kwargs.get("c") if "c" in kwargs else None
if color is None:
color = kwargs.get("color", None)
if color is None:
color = pts / pts.max()
if len(color) != len(pts):
color = [color for _ in pts]
colors = (
BufferAttribute(array=color, dtype=np.float32)
if color is not None
else BufferAttribute(array=np.asarray(pts / pts.max(), dtype=np.float32))
)
geometry = BufferGeometry(
attributes={
"position": BufferAttribute(array=np.asarray(pts, dtype=np.float32)),
"color": colors,
}
)
tex = CIRCLE_MAP
if kwargs.get("marker") in [".", "o", "circle"]:
tex = CIRCLE_MAP
elif kwargs.get("marker") in ["[]", "r", "q", "square"]:
tex = None
elif "map" in kwargs:
tex = kwargs.get("map")
material = PointsMaterial(
vertexColors="VertexColors",
size=kwargs.get("size", 5),
sizeAttenuation=kwargs.get("attenuate_size", False),
**({"map": tex} if tex else {}),
)
p = Points(geometry=geometry, material=material)
self._objects.append(p)
def _render_shape(
self,
shape_index,
shape=None,
edges=None,
vertices=None,
mesh_color=None,
edge_color=None,
vertex_color=None,
render_edges=False,
edge_width=1,
vertex_width=5,
transparent=False,
opacity=1.0,
):
edge_list = None
edge_lines = None
points = None
shape_mesh = None
start_render_time = self._start_timer()
if shape is not None:
if mesh_color is None:
mesh_color = self.default_mesh_color
if edge_color is None:
edge_color = self.default_edge_color
if vertex_color is None:
vertex_color = self.default_edge_color # same as edge_color
# Compute the tesselation
start_tesselation_time = self._start_timer()
np_vertices, np_triangles, np_normals = tessellate(
shape, self.quality, self.angular_tolerance
)
if np_normals.shape != np_vertices.shape:
raise AssertionError("Wrong number of normals/shapes")
self._stop_timer("tesselation time", start_tesselation_time)
# build a BufferGeometry instance
shape_geometry = BufferGeometry(
attributes={
"position": BufferAttribute(np_vertices),
"index": BufferAttribute(np_triangles.ravel()),
"normal": BufferAttribute(np_normals),
}
)
shp_material = self._material(mesh_color, transparent=True, opacity=opacity)
shape_mesh = Mesh(
geometry=shape_geometry, material=shp_material, name="mesh_%d" % shape_index
)
if render_edges:
edges = get_edges(shape)
if vertices is not None:
vertices_list = []
for vertex in vertices:
vertices_list.append(get_point(vertex))
vertices_list = np.array(vertices_list, dtype=np.float32)
attributes = {"position": BufferAttribute(vertices_list, normalized=False)}
mat = PointsMaterial(color=vertex_color, sizeAttenuation=False, size=vertex_width)
geom = BufferGeometry(attributes=attributes)
points = Points(geometry=geom, material=mat)
if edges is not None:
start_discretize_time = self._start_timer()
edge_list = [discretize_edge(edge, self.edge_accuracy) for edge in edges]
self._stop_timer("discretize time", start_discretize_time)
if edge_list is not None:
edge_list = flatten(list(map(explode, edge_list)))
lines = LineSegmentsGeometry(positions=edge_list)
mat = LineMaterial(linewidth=edge_width, color=edge_color)
edge_lines = LineSegments2(lines, mat, name="edges_%d" % shape_index)
if shape_mesh is not None or edge_lines is not None or points is not None:
index_mapping = {"mesh": None, "edges": None, "shape": shape_index}
if shape_mesh is not None:
ind = len(self.pickable_objects.children)
self.pickable_objects.add(shape_mesh)
index_mapping["mesh"] = ind
if edge_lines is not None:
ind = len(self.pickable_objects.children)
self.pickable_objects.add(edge_lines)
index_mapping["edges"] = ind
if points is not None:
ind = len(self.pickable_objects.children)
self.pickable_objects.add(points)
index_mapping["mesh"] = ind
self.pick_mapping.append(index_mapping)
self._stop_timer("shape render time", start_render_time)