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Merge pull request #119 from tpaviot/review/new-examples
Added more examples
2 parents fafc6f4 + 9157d7a commit 4d36035

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‎examples/core_display_customize_linewidth.py‎

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#!/usr/bin/env python
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##Copyright 2009-2015 Thomas Paviot ([email protected])
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##
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##This file is part of pythonOCC.
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##
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##pythonOCC is free software: you can redistribute it and/or modify
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##it under the terms of the GNU Lesser General Public License as published by
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##the Free Software Foundation, either version 3 of the License, or
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##(at your option) any later version.
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##
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##pythonOCC is distributed in the hope that it will be useful,
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##but WITHOUT ANY WARRANTY; without even the implied warranty of
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##MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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##GNU Lesser General Public License for more details.
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##
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##You should have received a copy of the GNU Lesser General Public License
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##along with pythonOCC. If not, see <http://www.gnu.org/licenses/>.
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from OCC.AIS import AIS_Shape
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from OCC.BRepPrimAPI import BRepPrimAPI_MakeBox
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from OCC.Display.SimpleGui import init_display
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display, start_display, add_menu, add_function_to_menu = init_display()
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#
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# Create a box
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#
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s = BRepPrimAPI_MakeBox(200, 100, 50).Shape()
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#
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# Create an AIS_Shape from the previous shape
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#
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ais_shp = AIS_Shape(s)
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ais_shp.SetWidth(4)
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ais_shp.SetTransparency(0.10)
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#
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# Get context and display shape
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#
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# Get Context
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ais_context = display.GetContext().GetObject()
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ais_context.Display(ais_shp.GetHandle())
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display.View_Iso()
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display.FitAll()
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start_display()

‎examples/core_display_customize_prs3d.py‎

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#!/usr/bin/env python
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##Copyright 2009-2015 Thomas Paviot ([email protected])
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##
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##This file is part of pythonOCC.
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##
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##pythonOCC is free software: you can redistribute it and/or modify
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##it under the terms of the GNU Lesser General Public License as published by
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##the Free Software Foundation, either version 3 of the License, or
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##(at your option) any later version.
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##
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##pythonOCC is distributed in the hope that it will be useful,
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##but WITHOUT ANY WARRANTY; without even the implied warranty of
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##MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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##GNU Lesser General Public License for more details.
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##
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##You should have received a copy of the GNU Lesser General Public License
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##along with pythonOCC. If not, see <http://www.gnu.org/licenses/>.
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#
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# This sample shows howto set display quality (higher or lower).
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# Be carful that improving quality results in higher memory consumption
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#
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from OCC.BRepPrimAPI import BRepPrimAPI_MakeCylinder
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from OCC.Display.SimpleGui import init_display
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display, start_display, add_menu, add_function_to_menu = init_display()
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display.SetModeHLR()
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#
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# Get Context
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#
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ais_context = display.GetContext().GetObject()
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#
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# Get Prs3d_drawer from previous context
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#
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drawer_handle = ais_context.DefaultDrawer()
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drawer = drawer_handle.GetObject()
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drawer.SetIsoOnPlane(True)
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la = drawer.LineAspect().GetObject()
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la.SetWidth(4)
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# increase line width in the current viewer
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# This is only viewed in the HLR mode (hit 'e' key for instance)
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line_aspect = drawer.SeenLineAspect().GetObject()
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drawer.EnableDrawHiddenLine()
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line_aspect.SetWidth(4)
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#
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drawer.SetWireAspect(line_aspect.GetHandle())
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#
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# Displays a cylinder
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#
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s = BRepPrimAPI_MakeCylinder(50., 50.).Shape()
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display.DisplayShape(s)
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#
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# Display settings and display loop
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#
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display.View_Iso()
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display.FitAll()
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start_display()

‎examples/core_display_export_to_image.py‎

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##Copyright 2010-2015 Thomas Paviot ([email protected])
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##
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##This file is part of pythonOCC.
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##
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##pythonOCC is free software: you can redistribute it and/or modify
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##it under the terms of the GNU Lesser General Public License as published by
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##the Free Software Foundation, either version 3 of the License, or
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##(at your option) any later version.
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##
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##pythonOCC is distributed in the hope that it will be useful,
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##but WITHOUT ANY WARRANTY; without even the implied warranty of
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##MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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##GNU Lesser General Public License for more details.
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##
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##You should have received a copy of the GNU Lesser General Public License
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##along with pythonOCC. If not, see <http://www.gnu.org/licenses/>.
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from OCC.Display.SimpleGui import init_display
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from OCC.BRepPrimAPI import BRepPrimAPI_MakeBox
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display, start_display, add_menu, add_function_to_menu = init_display()
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my_box = BRepPrimAPI_MakeBox(10., 20., 30.).Shape()
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display.DisplayShape(my_box, update=True)
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# in order to be able to export to usual file formats
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# oce must have been compiled with FreeImage
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# otherwise, images will be exported to PPM format
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def export_to_BMP(event=None):
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display.View.Dump('./capture_bmp.bmp')
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def export_to_PNG(event=None):
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display.View.Dump('./capture_png.png')
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def export_to_JPEG(event=None):
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display.View.Dump('./capture_jpeg.jpeg')
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def export_to_TIFF(event=None):
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display.View.Dump('./capture_tiff.tiff')
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def exit(event=None):
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sys.exit()
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if __name__ == '__main__':
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add_menu('screencapture')
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add_function_to_menu('screencapture', export_to_BMP)
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add_function_to_menu('screencapture', export_to_PNG)
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add_function_to_menu('screencapture', export_to_JPEG)
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add_function_to_menu('screencapture', export_to_TIFF)
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add_function_to_menu('screencapture', exit)
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start_display()

‎examples/core_display_quality.py‎

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#!/usr/bin/env python
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##Copyright 2009-2015 Thomas Paviot ([email protected])
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##
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##This file is part of pythonOCC.
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##
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##pythonOCC is free software: you can redistribute it and/or modify
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##it under the terms of the GNU Lesser General Public License as published by
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##the Free Software Foundation, either version 3 of the License, or
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##(at your option) any later version.
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##
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##pythonOCC is distributed in the hope that it will be useful,
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##but WITHOUT ANY WARRANTY; without even the implied warranty of
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##MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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##GNU Lesser General Public License for more details.
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##
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##You should have received a copy of the GNU Lesser General Public License
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##along with pythonOCC. If not, see <http://www.gnu.org/licenses/>.
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#
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# This sample shows howto set display quality (higher or lower).
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# Be carful that improving quality results in higher memory consumption
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#
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from OCC.BRepPrimAPI import BRepPrimAPI_MakeCylinder
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from OCC.Display.SimpleGui import init_display
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display, start_display, add_menu, add_function_to_menu = init_display()
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#
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# Get Context
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#
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ais_context = display.GetContext().GetObject()
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#
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# Display current quality
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dc = ais_context.DeviationCoefficient()
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dc_hlr = ais_context.HLRDeviationCoefficient()
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da = ais_context.DeviationAngle()
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da_hlr = ais_context.HLRAngle()
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print("Default display quality settings:")
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print("Deviation Coefficient: %f" % dc)
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print("Deviation Coefficient Hidden Line Removal: %f" % dc_hlr)
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print("Deviation Angle: %f" % da)
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print("Deviation Angle Hidden Line Removal: %f" % da_hlr)
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#
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# Improve quality by a factor 10
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#
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factor = 20
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ais_context.SetDeviationCoefficient(dc/factor)
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ais_context.SetDeviationAngle(da/factor)
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ais_context.SetHLRDeviationCoefficient(dc_hlr/factor)
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ais_context.SetHLRAngle(da_hlr/factor)
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print("Quality display improved by a factor {0}".format(factor))
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#
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# Displays a cylinder
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#
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s = BRepPrimAPI_MakeCylinder(50., 50.).Shape()
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display.DisplayShape(s)
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#
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# Display settings and display loop
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#
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display.View_Iso()
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display.FitAll()
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start_display()

‎examples/core_display_textured_shape.py‎

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#!/usr/bin/env python
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##Copyright 2009-2015 Thomas Paviot ([email protected])
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##
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##This file is part of pythonOCC.
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##
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##pythonOCC is free software: you can redistribute it and/or modify
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##it under the terms of the GNU Lesser General Public License as published by
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##the Free Software Foundation, either version 3 of the License, or
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##(at your option) any later version.
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##
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##pythonOCC is distributed in the hope that it will be useful,
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##but WITHOUT ANY WARRANTY; without even the implied warranty of
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##MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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##GNU Lesser General Public License for more details.
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##
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##You should have received a copy of the GNU Lesser General Public License
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##along with pythonOCC. If not, see <http://www.gnu.org/licenses/>.
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import os
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from OCC.Graphic3d import Graphic3d_NOM_SILVER, Graphic3d_MaterialAspect
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from OCC.BRepPrimAPI import BRepPrimAPI_MakeCylinder
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from OCC.Display.SimpleGui import init_display
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display, start_display, add_menu, add_function_to_menu = init_display()
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class Texture(object):
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"""
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This class encapsulates the necessary texture properties:
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Filename, toScaleU, etc.
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"""
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def __init__(self, filename):
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if not os.path.isfile(filename):
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raise IOError("File %s not found.\n" % filename)
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self._filename = filename
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self._toScaleU = 1.0
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self._toScaleV = 1.0
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self._toRepeatU = 1.0
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self._toRepeatV = 1.0
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self._originU = 0.0
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self._originV = 0.0
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def TextureScale(self, toScaleU, toScaleV):
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self._toScaleU = toScaleU
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self._toScaleV = toScaleV
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def TextureRepeat(self, toRepeatU, toRepeatV):
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self._toRepeatU = toRepeatU
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self._toRepeatV = toRepeatV
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def TextureOrigin(self, originU, originV):
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self._originU = originU
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self._originV = originV
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def GetProperties(self):
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return (self._filename,
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self._toScaleU, self._toScaleV,
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self._toRepeatU, self._toRepeatV,
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self._originU, self._originV)
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#
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# First create texture and a material
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#
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texture_filename = './images/ground.bmp'
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t = Texture(texture_filename)
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m = Graphic3d_MaterialAspect(Graphic3d_NOM_SILVER)
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#
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# Displays a cylinder with a material and a texture
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#
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s = BRepPrimAPI_MakeCylinder(60, 200)
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display.DisplayShape(s.Shape(), material=m, texture=t)
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#
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# Display settings
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#
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display.View_Iso()
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display.FitAll()
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start_display()

‎examples/core_geometry_faircurve.py‎

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#!/usr/bin/env python
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##Copyright 2009-2015 Jelle Ferina ([email protected])
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##
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##This file is part of pythonOCC.
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##
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##pythonOCC is free software: you can redistribute it and/or modify
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##it under the terms of the GNU Lesser General Public License as published by
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##the Free Software Foundation, either version 3 of the License, or
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##(at your option) any later version.
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##
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##pythonOCC is distributed in the hope that it will be useful,
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##but WITHOUT ANY WARRANTY; without even the implied warranty of
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##MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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##GNU Lesser General Public License for more details.
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##
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##You should have received a copy of the GNU Lesser General Public License
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##along with pythonOCC. If not, see <http://www.gnu.org/licenses/>.
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from __future__ import print_function
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import math
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import time
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import sys
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from OCC.gp import gp_Pnt2d, gp_Pln
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from OCC.Geom import Geom_Plane
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from OCC.FairCurve import FairCurve_MinimalVariation
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from OCC.BRepBuilderAPI import BRepBuilderAPI_MakeEdge
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from OCC.Display.SimpleGui import init_display
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display, start_display, add_menu, add_function_to_menu = init_display()
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def error_code(n):
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errors = {0: "FairCurve_OK",
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1: "FairCurve_NotConverged",
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2: "FairCurve_InfiniteSliding",
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3: "FairCurve_NullHeight",
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}
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return errors[n]
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def batten_curve(pt1, pt2, height, slope, angle1, angle2):
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fc = FairCurve_MinimalVariation(pt1, pt2, height, slope)
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fc.SetConstraintOrder1(2)
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fc.SetConstraintOrder2(2)
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fc.SetAngle1(angle1)
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fc.SetAngle2(angle2)
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fc.SetHeight(height)
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fc.SetSlope(slope)
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fc.SetFreeSliding(True)
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print(fc.DumpToString())
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status = fc.Compute()
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print(error_code(status[0]), error_code(status[1]))
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return fc.Curve()
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def faircurve(event=None):
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pt1 = gp_Pnt2d(0., 0.)
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pt2 = gp_Pnt2d(0., 120.)
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height = 100.
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pl = Geom_Plane(gp_Pln())
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for i in range(0, 40):
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# TODO: the parameter slope needs to be visualized
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slope = i/100.
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bc = batten_curve(pt1, pt2, height, slope,
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math.radians(i), math.radians(-i))
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display.EraseAll()
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edge = BRepBuilderAPI_MakeEdge(bc, pl.GetHandle()).Edge()
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display.DisplayShape(edge, update=True)
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time.sleep(0.21)
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def exit(event=None):
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sys.exit(0)
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if __name__ == "__main__":
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add_menu('fair curve')
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add_function_to_menu('fair curve', faircurve)
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add_function_to_menu('fair curve', exit)
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start_display()

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