From f997b3079b7b723ff3ee7f65b100620ee1cb4eb5 Mon Sep 17 00:00:00 2001
From: Luke Campagnola <luke.campagnola@gmail.com>
Date: Fri, 6 Sep 2013 15:36:36 -0400
Subject: [PATCH] Added GLBarGraphItem example GLMeshItem accepts ShaderProgram
or name of predefined program Added missing documentation to GLGraphicsItem
minor edits
---
examples/GLBarGraphItem.py | 47 +++++++++++++++++++++++++++
pyqtgraph/PlotData.py | 1 +
pyqtgraph/multiprocess/remoteproxy.py | 6 +++-
pyqtgraph/opengl/GLGraphicsItem.py | 23 +++++++++++++
pyqtgraph/opengl/MeshData.py | 6 ++--
pyqtgraph/opengl/items/GLMeshItem.py | 6 +++-
6 files changed, 84 insertions(+), 5 deletions(-)
create mode 100644 examples/GLBarGraphItem.py
diff --git a/examples/GLBarGraphItem.py b/examples/GLBarGraphItem.py
new file mode 100644
index 00000000..d14eba87
--- /dev/null
+++ b/examples/GLBarGraphItem.py
@@ -0,0 +1,47 @@
+# -*- coding: utf-8 -*-
+"""
+Demonstrate use of GLLinePlotItem to draw cross-sections of a surface.
+
+"""
+## Add path to library (just for examples; you do not need this)
+import initExample
+
+from pyqtgraph.Qt import QtCore, QtGui
+import pyqtgraph.opengl as gl
+import pyqtgraph as pg
+import numpy as np
+
+app = QtGui.QApplication([])
+w = gl.GLViewWidget()
+w.opts['distance'] = 40
+w.show()
+w.setWindowTitle('pyqtgraph example: GLBarGraphItem')
+
+gx = gl.GLGridItem()
+gx.rotate(90, 0, 1, 0)
+gx.translate(-10, 0, 10)
+w.addItem(gx)
+gy = gl.GLGridItem()
+gy.rotate(90, 1, 0, 0)
+gy.translate(0, -10, 10)
+w.addItem(gy)
+gz = gl.GLGridItem()
+gz.translate(0, 0, 0)
+w.addItem(gz)
+
+# regular grid of starting positions
+pos = np.mgrid[0:10, 0:10, 0:1].reshape(3,10,10).transpose(1,2,0)
+# fixed widths, random heights
+size = np.empty((10,10,3))
+size[...,0:2] = 0.4
+size[...,2] = np.random.normal(size=(10,10))
+
+bg = gl.GLBarGraphItem(pos, size)
+w.addItem(bg)
+
+
+## Start Qt event loop unless running in interactive mode.
+if __name__ == '__main__':
+ import sys
+ if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
+ QtGui.QApplication.instance().exec_()
diff --git a/pyqtgraph/PlotData.py b/pyqtgraph/PlotData.py
index 0bf13ca8..e5faadda 100644
--- a/pyqtgraph/PlotData.py
+++ b/pyqtgraph/PlotData.py
@@ -15,6 +15,7 @@ class PlotData(object):
- removal of nan/inf values
- option for single value shared by entire column
- cached downsampling
+ - cached min / max / hasnan / isuniform
"""
def __init__(self):
self.fields = {}
diff --git a/pyqtgraph/multiprocess/remoteproxy.py b/pyqtgraph/multiprocess/remoteproxy.py
index f33ebc83..e4c3f34f 100644
--- a/pyqtgraph/multiprocess/remoteproxy.py
+++ b/pyqtgraph/multiprocess/remoteproxy.py
@@ -205,7 +205,11 @@ class RemoteEventHandler(object):
fnkwds[k] = np.fromstring(byteData[ind], dtype=dtype).reshape(shape)
if len(fnkwds) == 0: ## need to do this because some functions do not allow keyword arguments.
- result = obj(*fnargs)
+ try:
+ result = obj(*fnargs)
+ except:
+ print("Failed to call object %s: %d, %s" % (obj, len(fnargs), fnargs[1:]))
+ raise
else:
result = obj(*fnargs, **fnkwds)
diff --git a/pyqtgraph/opengl/GLGraphicsItem.py b/pyqtgraph/opengl/GLGraphicsItem.py
index 59bc4449..9680fba7 100644
--- a/pyqtgraph/opengl/GLGraphicsItem.py
+++ b/pyqtgraph/opengl/GLGraphicsItem.py
@@ -40,6 +40,7 @@ class GLGraphicsItem(QtCore.QObject):
self.__glOpts = {}
def setParentItem(self, item):
+ """Set this item's parent in the scenegraph hierarchy."""
if self.__parent is not None:
self.__parent.__children.remove(self)
if item is not None:
@@ -98,9 +99,11 @@ class GLGraphicsItem(QtCore.QObject):
def parentItem(self):
+ """Return a this item's parent in the scenegraph hierarchy."""
return self.__parent
def childItems(self):
+ """Return a list of this item's children in the scenegraph hierarchy."""
return list(self.__children)
def _setView(self, v):
@@ -124,10 +127,15 @@ class GLGraphicsItem(QtCore.QObject):
return self.__depthValue
def setTransform(self, tr):
+ """Set the local transform for this object.
+ Must be a :class:`Transform3D <pyqtgraph.Transform3D>` instance. This transform
+ determines how the local coordinate system of the item is mapped to the coordinate
+ system of its parent."""
self.__transform = Transform3D(tr)
self.update()
def resetTransform(self):
+ """Reset this item's transform to an identity transformation."""
self.__transform.setToIdentity()
self.update()
@@ -148,9 +156,12 @@ class GLGraphicsItem(QtCore.QObject):
self.setTransform(tr * self.transform())
def transform(self):
+ """Return this item's transform object."""
return self.__transform
def viewTransform(self):
+ """Return the transform mapping this item's local coordinate system to the
+ view coordinate system."""
tr = self.__transform
p = self
while True:
@@ -190,16 +201,24 @@ class GLGraphicsItem(QtCore.QObject):
def hide(self):
+ """Hide this item.
+ This is equivalent to setVisible(False)."""
self.setVisible(False)
def show(self):
+ """Make this item visible if it was previously hidden.
+ This is equivalent to setVisible(True)."""
self.setVisible(True)
def setVisible(self, vis):
+ """Set the visibility of this item."""
self.__visible = vis
self.update()
def visible(self):
+ """Return True if the item is currently set to be visible.
+ Note that this does not guarantee that the item actually appears in the
+ view, as it may be obscured or outside of the current view area."""
return self.__visible
@@ -237,6 +256,10 @@ class GLGraphicsItem(QtCore.QObject):
self.setupGLState()
def update(self):
+ """
+ Indicates that this item needs to be redrawn, and schedules an update
+ with the view it is displayed in.
+ """
v = self.view()
if v is None:
return
diff --git a/pyqtgraph/opengl/MeshData.py b/pyqtgraph/opengl/MeshData.py
index 12a9b83b..71e566c9 100644
--- a/pyqtgraph/opengl/MeshData.py
+++ b/pyqtgraph/opengl/MeshData.py
@@ -247,9 +247,9 @@ class MeshData(object):
return self._faceNormals
elif indexed == 'faces':
if self._faceNormalsIndexedByFaces is None:
- norms = np.empty((self._faceNormals.shape[0], 3, 3))
- norms[:] = self._faceNormals[:,np.newaxis,:]
- self._faceNormalsIndexedByFaces = norms
+ norms = np.empty((self._faceNormals.shape[0], 3, 3))
+ norms[:] = self._faceNormals[:,np.newaxis,:]
+ self._faceNormalsIndexedByFaces = norms
return self._faceNormalsIndexedByFaces
else:
raise Exception("Invalid indexing mode. Accepts: None, 'faces'")
diff --git a/pyqtgraph/opengl/items/GLMeshItem.py b/pyqtgraph/opengl/items/GLMeshItem.py
index 66d54361..5b245e64 100644
--- a/pyqtgraph/opengl/items/GLMeshItem.py
+++ b/pyqtgraph/opengl/items/GLMeshItem.py
@@ -69,7 +69,11 @@ class GLMeshItem(GLGraphicsItem):
self.update()
def shader(self):
- return shaders.getShaderProgram(self.opts['shader'])
+ shader = self.opts['shader']
+ if isinstance(shader, shaders.ShaderProgram):
+ return shader
+ else:
+ return shaders.getShaderProgram(shader)
def setColor(self, c):
"""Set the default color to use when no vertex or face colors are specified."""
--
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