Add pyqtgraph as submodule

pyqtgraph/opengl/items/GLAxisItem.py

@@ -0,0 +1,64 @@
+from OpenGL.GL import *
+from .. GLGraphicsItem import GLGraphicsItem
+from ... import QtGui
+
+__all__ = ['GLAxisItem']
+
+class GLAxisItem(GLGraphicsItem):
+    """
+    **Bases:** :class:`GLGraphicsItem <pyqtgraph.opengl.GLGraphicsItem>`
+    
+    Displays three lines indicating origin and orientation of local coordinate system. 
+    
+    """
+    
+    def __init__(self, size=None, antialias=True, glOptions='translucent'):
+        GLGraphicsItem.__init__(self)
+        if size is None:
+            size = QtGui.QVector3D(1,1,1)
+        self.antialias = antialias
+        self.setSize(size=size)
+        self.setGLOptions(glOptions)
+    
+    def setSize(self, x=None, y=None, z=None, size=None):
+        """
+        Set the size of the axes (in its local coordinate system; this does not affect the transform)
+        Arguments can be x,y,z or size=QVector3D().
+        """
+        if size is not None:
+            x = size.x()
+            y = size.y()
+            z = size.z()
+        self.__size = [x,y,z]
+        self.update()
+        
+    def size(self):
+        return self.__size[:]
+    
+    
+    def paint(self):
+
+        #glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
+        #glEnable( GL_BLEND )
+        #glEnable( GL_ALPHA_TEST )
+        self.setupGLState()
+        
+        if self.antialias:
+            glEnable(GL_LINE_SMOOTH)
+            glHint(GL_LINE_SMOOTH_HINT, GL_NICEST)
+            
+        glBegin( GL_LINES )
+        
+        x,y,z = self.size()
+        glColor4f(0, 1, 0, .6)  # z is green
+        glVertex3f(0, 0, 0)
+        glVertex3f(0, 0, z)
+
+        glColor4f(1, 1, 0, .6)  # y is yellow
+        glVertex3f(0, 0, 0)
+        glVertex3f(0, y, 0)
+
+        glColor4f(0, 0, 1, .6)  # x is blue
+        glVertex3f(0, 0, 0)
+        glVertex3f(x, 0, 0)
+        glEnd()