def display_shape(shape, fmap):
occ_display.EraseAll()
ais = AIS_ColoredShape(shape)
for f in fmap:
ais.SetCustomColor(f, colors[fmap[f]])
occ_display.Context.Display(ais.GetHandle())
# occ_display.View_Iso()
occ_display.FitAll()
imagine importing a CAD file and wanting to set color to a subshape of the imported CAD data
with OCE 0.17 / OCC 6.8.0, this became easy, since colors can be set for subshapes
"""
from __future__ import print_function
from random import random
from OCC.AIS import AIS_ColoredShape
from OCC.BRepPrimAPI import BRepPrimAPI_MakeBox
from OCC.Display.OCCViewer import color
from OCC.Display.SimpleGui import init_display
from core_topology_traverse import Topo
display, start_display, add_menu, add_function_to_menu = init_display()
my_box = BRepPrimAPI_MakeBox(10., 20., 30.).Shape()
ais = AIS_ColoredShape(my_box)
for fc in Topo(my_box).faces():
# set a custom color per-face
ais.SetCustomColor(fc, color(random(), random(), random()))
display.Context.Display(ais.GetHandle())
display.FitAll()
start_display()
COLORS = [
rgb_color(0, 0, 0),
rgb_color(0.75, 0.75, 0.75),
rgb_color(1, 0, 0),
rgb_color(1, 0.5, 0),
rgb_color(0, 1, 1),
rgb_color(1, 0, 1),
rgb_color(1, 0.8, 0.8),
rgb_color(1, 1, 0.8),
rgb_color(0.8, 1, 1),
rgb_color(1, 0.8, 1),
rgb_color(0.4, 0, 0),
rgb_color(0.4, 0.4, 0),
rgb_color(0, 0.4, 0.4),
rgb_color(0.4, 0, 0.4)
]
SHAPE, FMAP, ID_MAP, SHAPE_NAME = shape_drain()
print(SHAPE_NAME)
AIS = AIS_ColoredShape(SHAPE)
for a_face in FMAP:
AIS.SetCustomColor(a_face, COLORS[FMAP[a_face]])
OCC_DISPLAY.Context.Display(AIS.GetHandle())
OCC_DISPLAY.View_Iso()
OCC_DISPLAY.FitAll()
START_OCC_DISPLAY()
def loadShape(self, shape_list):
"""
Method for loading one or more shapes and displaying to Output Viewer.
This method uses libraries of iges caf control for fetching sub-shape names within .igs files. This method
is used when adding a case in the main routine.
@param shape_list [list] First index contains the path of shape, second index contains a list of display
exceptions, e.g: [[igs_2d_shape_path, ["HUB", "SHROUD"], [igs_3d_shape_path, ["STREAM"]]
@return First return contains list of ais_shapes handles and second return contains a list of sub-shape names
in strings
"""
loaded_ais_shape = []
loaded_h_ais_shape = []
loaded_subshape_names = []
default_displaying_h_ais_shape = []
for shape_case in shape_list:
loaded_shape_filename = os.path.basename(shape_case[0])
exception_list = shape_case[1]
exception_list = list(
filter(None, exception_list)
) # Mistake-prevention of user filling of exception list
# creates a handle for TdocStd documents
h_doc = Handle_TDocStd_Document()
# create the application
app = _XCAFApp.XCAFApp_Application_GetApplication().GetObject()
app.NewDocument(TCollection_ExtendedString(""), h_doc)
# get root assembly
doc = h_doc.GetObject()
h_shape_tool = XCAFDoc_DocumentTool().ShapeTool(doc.Main())
# creates a reader responsible for reading an IGS file
reader = IGESCAFControl_Reader()
reader.ReadFile(shape_case[0])
# Translates currently loaded IGES file into the document
reader.Transfer(doc.GetHandle())
# labels for the shapes. Every IGS file contains a name for each individual shape
labels = TDF_LabelSequence()
shape_tool = h_shape_tool.GetObject()
shape_tool.GetShapes(labels)
# gets the number of individual shapes contained in the igs file
nb = reader.NbShapes()
# for each individual shape gets the label nad creates a AIS_Shape for data contained in reader.Shape()
for i in range(1, nb + 1):
label = labels.Value(i)
h_name = Handle_TDataStd_Name()
label.FindAttribute(TDataStd_Name_GetID(), h_name)
str_dump = h_name.GetObject().DumpToString()
name_subshape = str_dump.split('|')[-2]
name = "%s - %s" % (loaded_shape_filename, name_subshape)
loaded_subshape_names.append(name)
shape = AIS_ColoredShape(reader.Shape(i))
loaded_ais_shape.append(shape)
loaded_h_ais_shape.append(shape.GetHandle())
if not any(iterator in name_subshape
for iterator in exception_list):
default_displaying_h_ais_shape.append(shape.GetHandle())
self.op_viewer.master_shape_list.append(shape.GetHandle())
# number of cases is a variable used to make the loaded shape color different from the previous one
number_of_cases = self.op_viewer.model.rowCount(
self.op_viewer.ui_case_treeview.rootIndex())
# sets the default attributes for ais shapes handles
for h_ais_shape in loaded_h_ais_shape:
self.op_viewer.display.Context.SetDeviationCoefficient(
h_ais_shape,
self.op_viewer.DC / self.op_viewer.default_shape_factor)
self.op_viewer.display.Context.SetHLRDeviationCoefficient(
h_ais_shape, self.op_viewer.DC_HLR /
self.op_viewer.default_shape_factor)
self.op_viewer.display.Context.SetColor(
h_ais_shape, shape_colordictionary[shape_colorlist[
(self.op_viewer.default_shape_color + number_of_cases)
% len(shape_colorlist)]])
self.op_viewer.display.Context.SetTransparency(
h_ais_shape, self.op_viewer.default_shape_transparency)
# displays the handles of the ais_shapes in the viewer3d context.
for h_ais_shape in default_displaying_h_ais_shape:
self.op_viewer.display.Context.Display(h_ais_shape)
return loaded_h_ais_shape, loaded_subshape_names