Lefthand v righthand?

[ron]

Is the pyqtgraph GLViewWidget() inherently a left handed or right handed coordinate system? Is there a way to set this?

The code below is just enough to show the GLAxisItem. It looks like a lefty!

Is there a way to change the setup to a right-handed coordinate system?

import pyqtgraph.opengl as gl
import pyqtgraph as pg
import PySide
app = PySide.QtGui.QApplication([])
fig = gl.GLViewWidget()
axis = gl.GLAxisItem()
fig.addItem(axis)
fig.setWindowTitle('left v right')
fig.show()
pg.QtGui.QApplication.instance().exec_()

[vas...@gmail.com]

I am sure there is an another way, but you can override GlViewWidget mouseMoveEvent method (original code is commented out).

import pyqtgraph.opengl as gl
import pyqtgraph as pg

from pyqtgraph import QtCore

class GLViewWidgetLeftHanded(gl.GLViewWidget):
    def __init__(self):
        super(GLViewWidgetLeftHanded, self).__init__()
       
    def mouseMoveEvent(self, ev):
        diff = ev.pos() - self.mousePos
        self.mousePos = ev.pos()
       
        # if ev.buttons() == QtCore.Qt.LeftButton:
        if ev.buttons() == QtCore.Qt.RightButton:
            self.orbit(-diff.x(), diff.y())
        elif ev.buttons() == QtCore.Qt.MidButton:
            if (ev.modifiers() & QtCore.Qt.ControlModifier):
                self.pan(diff.x(), 0, diff.y(), relative=True)
            else:
                self.pan(diff.x(), diff.y(), 0, relative=True)

app = pg.QtGui.QApplication([])
fig = GLViewWidgetLeftHanded()

axis = gl.GLAxisItem()

fig.addItem(axis)
fig.setWindowTitle('left v right')
fig.show()
pg.QtGui.QApplication.instance().exec_()

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