49 lines
1.3 KiB
ReStructuredText
49 lines
1.3 KiB
ReStructuredText
3D Graphics
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===========
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PyQtGraph uses OpenGL to provide a 3D scenegraph system. This system is functional but still early in development.
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Current capabilities include:
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* 3D view widget with zoom/rotate controls (mouse drag and wheel)
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* Scenegraph allowing items to be added/removed from scene with per-item transformations and parent/child relationships.
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* Triangular meshes
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* Basic mesh computation functions: isosurfaces, per-vertex normals
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* Volumetric rendering item
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* Grid/axis items
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See the :doc:`API Reference </3dgraphics/index>` and the Volumetric (GLVolumeItem.py) and Isosurface (GLMeshItem.py) examples for more information.
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Basic usage example::
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## build a QApplication before building other widgets
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import pyqtgraph as pg
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pg.mkQApp()
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## make a widget for displaying 3D objects
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import pyqtgraph.opengl as gl
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view = gl.GLViewWidget()
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view.show()
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## create three grids, add each to the view
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xgrid = gl.GLGridItem()
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ygrid = gl.GLGridItem()
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zgrid = gl.GLGridItem()
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view.addItem(xgrid)
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view.addItem(ygrid)
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view.addItem(zgrid)
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## rotate x and y grids to face the correct direction
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xgrid.rotate(90, 0, 1, 0)
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ygrid.rotate(90, 1, 0, 0)
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## scale each grid differently
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xgrid.scale(0.2, 0.1, 0.1)
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ygrid.scale(0.2, 0.1, 0.1)
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zgrid.scale(0.1, 0.2, 0.1)
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