59 lines
1.6 KiB
Python
59 lines
1.6 KiB
Python
from OpenGL.GL import *
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from .. GLGraphicsItem import GLGraphicsItem
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from pyqtgraph import QtGui
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__all__ = ['GLGridItem']
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class GLGridItem(GLGraphicsItem):
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"""
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**Bases:** :class:`GLGraphicsItem <pyqtgraph.opengl.GLGraphicsItem>`
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Displays a wire-grame grid.
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"""
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def __init__(self, size=None, color=None, antialias=True, glOptions='translucent'):
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GLGraphicsItem.__init__(self)
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self.setGLOptions(glOptions)
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self.antialias = antialias
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if size is None:
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size = QtGui.QVector3D(1,1,1)
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self.setSize(size=size)
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def setSize(self, x=None, y=None, z=None, size=None):
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"""
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Set the size of the axes (in its local coordinate system; this does not affect the transform)
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Arguments can be x,y,z or size=QVector3D().
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"""
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if size is not None:
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x = size.x()
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y = size.y()
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z = size.z()
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self.__size = [x,y,z]
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self.update()
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def size(self):
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return self.__size[:]
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def paint(self):
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self.setupGLState()
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if self.antialias:
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glEnable(GL_LINE_SMOOTH)
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glEnable(GL_BLEND)
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
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glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
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glBegin( GL_LINES )
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x,y,z = self.size()
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glColor4f(1, 1, 1, .3)
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for x in range(-10, 11):
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glVertex3f(x, -10, 0)
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glVertex3f(x, 10, 0)
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for y in range(-10, 11):
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glVertex3f(-10, y, 0)
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glVertex3f( 10, y, 0)
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glEnd()
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