Viewport¶
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class
glumpy.transforms.
Viewport
(code=None, *args, **kwargs)¶ Bases:
glumpy.transforms.transform.Transform
Viewport transform
Parameters: - transform (bool) – Whether to enforce viewport transformation. Default is true.
- clipping (nool) – Whether to enforce viewport clipping. Default is true.
- viewport (tuple) – Viewport (x,y,w,h) in absolute window coordinates. Default is None.
The viewport transform allows to restrict the display of a scene to a local viewport.
The transform is connected to the following events:
on_attach
: Transform initializationon_resize
: Tranform update to maintain aspect
Usage example:
vertex = ''' attribute vec2 position; void main() { ... gl_Position = vec4(position,0,1); <viewport.transform>; } ''' fragment = ''' void main() { <viewport.clipping>; ... gl_FragColor = vec4(1,0,0,1); } ''' window = app.Window(400,400) ... program = Program(vertex, fragment) program["viewport"] = transforms.Viewport(viewport=(10,10,390,390)) window.attach(program["viewport"]) ...
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clipping
¶ Whether to enforce viewport clipping
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extents
¶ Viewport extents as (x,y,w,h) (absolute coordinates)
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transform
¶ Whether to enforce viewport transform