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Technical Discussion » Python Viewer States Issues


Alexey Vanzhula: 538 posts; Offline

2020年1月4日 04:13:55

In this example, I want the circle to appear immediately after the state is activated. But it appears only after I start to manipulate the viewport using the Alt key.

class TestTemplate(object):
    _drawable_geo = hou.Geometry()
    circle = hou.sopNodeTypeCategory().nodeVerb("circle")
    circle.setParms({ "type": 2 })
    circle.execute(_drawable_geo, [])
    del circle

    def __init__(self, scene_viewer, state_name):
        self.scene_viewer = scene_viewer
        self.state_name = state_name

        self._drawable = hou.SimpleDrawable(self.scene_viewer, self._drawable_geo, "test_drawable")

    def onGenerate(self, kwargs):
        self._drawable.enable(True)
        self._drawable.show(True)
        
        self.scene_viewer.curViewport().draw()


# UNREGISTER
if hou.ui.isRegisteredViewerState('test_state'):
    hou.ui.unregisterViewerState('test_state')        

# CREATE AND REGISTER
template = hou.ViewerStateTemplate('test_state', 'Test State', hou.sopNodeTypeCategory())
template.bindFactory(TestTemplate)
hou.ui.registerViewerState(template)

# ACTIVATE
scene_viewer = hou.ui.paneTabOfType(hou.paneTabType.SceneViewer)
scene_viewer.setCurrentState("test_state")

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Technical Discussion » Python Viewer States Issues


Alexey Vanzhula: 538 posts; Offline

2020年1月4日 03:52:03

Thank you for answers!

mabelzile
vux
Currently, we can't draw the drawable geometry immediately after activating the state in the onEnter or onGenerate methods. In the current Python states implementation, we must first move the mouse to update the drawables. So, we need a method to force update.

Use `hou.GeometryViewport.draw()` to force a redraw.

Yes, but this did not work in my case. I will show my example in a few hours

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Technical Discussion » hou.SceneViewer.isWorldSpaceLocal


Alexey Vanzhula: 538 posts; Offline

2019年12月31日 14:01:13

tamte
usually when your scene viewer is at SOP level and you show or ghost other objects, you are in true world space
if you Hide Other Objects, you are in object space of the current object sops belong to

so in the first case you should get False in second True

Thanks, I got it!

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Technical Discussion » hou.SceneViewer.isWorldSpaceLocal


Alexey Vanzhula: 538 posts; Offline

2019年12月31日 13:46:17

Hi. How to use the hou.SceneViewer.isWorldSpaceLocal method? It always returns False. The documentation did not help.

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Technical Discussion » Python Viewer States Issues


Alexey Vanzhula: 538 posts; Offline

2019年12月22日 09:20:53

Python states part of the Houdini documentation has a lot of mistakes.

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Technical Discussion » Python Viewer States Issues


Alexey Vanzhula: 538 posts; Offline

2019年12月22日 08:09:12

Currently, we can't draw the drawable geometry immediately after activating the state in the onEnter or onGenerate methods. In the current Python states implementation, we must first move the mouse to update the drawables. So, we need a method to force update.

Edited by Alexey Vanzhula - 2019年12月22日 09:18:36

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Technical Discussion » Problem with nodeless python states


Alexey Vanzhula: 538 posts; Offline

2019年12月22日 07:11:24

The issue still not fixed in H18

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Technical Discussion » Python Viewer States Issues


Alexey Vanzhula: 538 posts; Offline

2019年12月22日 06:30:09

In H17.5 and H18 I can't change the wireframe display mode color with the hou.SimpleDrawable.setWireframeColor method.

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Technical Discussion » SceneViewer as QWidget in H18


Alexey Vanzhula: 538 posts; Offline

2019年12月16日 09:54:30

H17.5:

from hutil.Qt import shiboken2

H18.0:

import shiboken2

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Technical Discussion » Python Viewer States Issues


Alexey Vanzhula: 538 posts; Offline

2019年12月15日 14:32:34

Another problem. The stroke_demo.hip example works much slower then in H17.5.

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Technical Discussion » Python Viewer States Issues


Alexey Vanzhula: 538 posts; Offline

2019年12月15日 08:30:37

I have solve the problem myself

def onGenerate(self, kwargs):
    kwargs['state_flags']['mouse_drag'] = True

Anyway, according to the documentation:

Mouse drag events are generated by default (True)

this value have to be True by default, but in fact it is not.

Edited by Alexey Vanzhula - 2019年12月15日 08:30:56

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Technical Discussion » Python Viewer States Issues


Alexey Vanzhula: 538 posts; Offline

2019年12月15日 08:12:07

I decided to post python viewer states problems in this thread.

In H17.5, after activation with onResume method, the state continues to generate the mouse move event (hou.uiEventReason.Located). But in H18 this type of event stops happening.

Test build: Houdini 18.0.318 Linux version

Edited by Alexey Vanzhula - 2019年12月15日 08:16:45

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Technical Discussion » SceneViewer as QWidget in H18


Alexey Vanzhula: 538 posts; Offline

2019年12月11日 07:37:58

@pezetko

Great! Even my function works. All I need is to declare main_widget as global variable. Thank you!

Edited by Alexey Vanzhula - 2019年12月11日 07:38:22

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Technical Discussion » SceneViewer as QWidget in H18


Alexey Vanzhula: 538 posts; Offline

2019年12月11日 03:55:32

Amazing! I'll try it a bit later. Thank you so much!

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Technical Discussion » SceneViewer as QWidget in H18


Alexey Vanzhula: 538 posts; Offline

2019年12月10日 16:29:31

Stackenblocken-Sidefx
What happens if you cast the widget pointer to int instead of long?

same result

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Technical Discussion » SceneViewer as QWidget in H18


Alexey Vanzhula: 538 posts; Offline

2019年12月9日 17:38:41

So, the changes in H18 broke my tools.

This code works well in H17.5, but gives an error in H18. Please help me.

import shiboken2
import PySide2.QtWidgets as qtw

def get_viewer_widget(): 
    main_widget = hou.qt.mainWindow()
    for widget in main_widget.findChildren(qtw.QWidget, 'RE_Window'):
        if widget.windowTitle() == 'DM_ViewLayout':
            for l in widget.findChildren(qtw.QVBoxLayout):
                if l.count()==1:
                    w = l.itemAt(0).widget()
                    if w.objectName() == 'RE_GLDrawable':
                        i = long(shiboken2.getCppPointer(w)[0])
                        mouse_widget = shiboken2.wrapInstance(i, qtw.QWidget)
                        return mouse_widget

Edited by Alexey Vanzhula - 2019年12月9日 23:39:23

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Technical Discussion » SceneViewer as QWidget in H18


Alexey Vanzhula: 538 posts; Offline

2019年12月3日 13:38:40

Why we still don’t have a native way to get scene viewer area as Qt widget? Why it is not a problem for Maya and Modo for many years. After every major release I have to come up with a new way to fix the problem

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3rd Party » DM 2


Alexey Vanzhula: 538 posts; Offline

2019年11月19日 12:22:09

DM 2.1 7 days discount:
https://gum.co/xKBKM/7_days_discount [gum.co]

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Houdini Lounge » Will we be able to select&edit multiple points in Curve node in Houdini 18?


Alexey Vanzhula: 538 posts; Offline

2019年11月9日 06:03:44

goat
vux
The next goal is an effective curve tool based on python states.

free tool?

I think, when it will be finished, I will upload it as a free tool

Edited by Alexey Vanzhula - 2019年11月9日 13:37:06

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Houdini Lounge » Will we be able to select&edit multiple points in Curve node in Houdini 18?


Alexey Vanzhula: 538 posts; Offline

2019年11月7日 13:22:44

No. It will be a part of the Modeler(former DM) package

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