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Fixed GLLinePlotItem line width option

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Added antialiasing to GL line items
This commit is contained in:
Luke Campagnola 2013-03-30 22:39:11 -04:00
parent 70ec358995
commit 09bc17bdb5
4 changed files with 28 additions and 13 deletions
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2
examples/GLLinePlotItem.py
View File

@ -40,7 +40,7 @@ for i in range(n):
d = (x**2 + yi**2)**0.5
z = 10 * np.cos(d) / (d+1)
pts = np.vstack([x,yi,z]).transpose()
plt = gl.GLLinePlotItem(pos=pts, color=pg.glColor((i,n*1.3)))
plt = gl.GLLinePlotItem(pos=pts, color=pg.glColor((i,n*1.3)), width=(i+1)/10., antialias=True)
w.addItem(plt)

10
pyqtgraph/opengl/items/GLAxisItem.py
View File

@ -12,10 +12,11 @@ class GLAxisItem(GLGraphicsItem):
"""
def __init__(self, size=None):
def __init__(self, size=None, antialias=True):
GLGraphicsItem.__init__(self)
if size is None:
size = QtGui.QVector3D(1,1,1)
self.antialias = antialias
self.setSize(size=size)
def setSize(self, x=None, y=None, z=None, size=None):
@ -39,8 +40,11 @@ class GLAxisItem(GLGraphicsItem):
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glEnable( GL_BLEND )
glEnable( GL_ALPHA_TEST )
glEnable( GL_POINT_SMOOTH )
#glDisable( GL_DEPTH_TEST )
if self.antialias:
glEnable(GL_LINE_SMOOTH)
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
glBegin( GL_LINES )
x,y,z = self.size()

15
pyqtgraph/opengl/items/GLGridItem.py
View File

@ -11,9 +11,10 @@ class GLGridItem(GLGraphicsItem):
Displays a wire-grame grid.
"""
def __init__(self, size=None, color=None, glOptions='translucent'):
def __init__(self, size=None, color=None, antialias=True, glOptions='translucent'):
GLGraphicsItem.__init__(self)
self.setGLOptions(glOptions)
self.antialias = antialias
if size is None:
size = QtGui.QVector3D(1,1,1)
self.setSize(size=size)
@ -36,11 +37,13 @@ class GLGridItem(GLGraphicsItem):
def paint(self):
self.setupGLState()
#glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
#glEnable( GL_BLEND )
#glEnable( GL_ALPHA_TEST )
glEnable( GL_POINT_SMOOTH )
#glDisable( GL_DEPTH_TEST )
if self.antialias:
glEnable(GL_LINE_SMOOTH)
glEnable(GL_BLEND)
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
glBegin( GL_LINES )
x,y,z = self.size()

14
pyqtgraph/opengl/items/GLLinePlotItem.py
View File

@ -32,13 +32,14 @@ class GLLinePlotItem(GLGraphicsItem):
color tuple of floats (0.0-1.0) specifying
a color for the entire item.
width float specifying line width
antialias enables smooth line drawing
==================== ==================================================
"""
args = ['pos', 'color', 'width', 'connected']
args = ['pos', 'color', 'width', 'connected', 'antialias']
for k in kwds.keys():
if k not in args:
raise Exception('Invalid keyword argument: %s (allowed arguments are %s)' % (k, str(args)))
self.antialias = False
for arg in args:
if arg in kwds:
setattr(self, arg, kwds[arg])
@ -72,8 +73,15 @@ class GLLinePlotItem(GLGraphicsItem):
try:
glVertexPointerf(self.pos)
glColor4f(*self.color)
glLineWidth(self.width)
#glPointSize(self.width)
glPointSize(self.width)
if self.antialias:
glEnable(GL_LINE_SMOOTH)
glEnable(GL_BLEND)
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
glDrawArrays(GL_LINE_STRIP, 0, self.pos.size / self.pos.shape[-1])
finally:
glDisableClientState(GL_VERTEX_ARRAY)