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Update x,y.z values for an existing Line3D object #1629

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Update x,y.z values for an existing Line3D object #1629

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ecbc43e
added a set_3d_data function to Line3D which works in the same
Dec 31, 2012
2bd8fae
Added zdir kwarg to Line3D.__init__
Dec 31, 2012
f82812d
added default values to Line3D.set_3d_data so that a sub-set of
Dec 31, 2012
0602dfd
pep8 compliance
Dec 31, 2012
3f5fc85
added CHANGELOG entry for set_3d_data
Dec 31, 2012
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3 changes: 3 additions & 0 deletions CHANGELOG
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Original file line number Diff line number Diff line change
@@ -1,3 +1,6 @@
2012-12-31 Added set_3d_data to Line3D to update the data of an existing
Line3d object. - TAC

2012-12-05 Added MatplotlibDeprecationWarning class for signaling deprecation.
Matplotlib developers can use this class as follows:

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24 changes: 22 additions & 2 deletions lib/mpl_toolkits/mplot3d/art3d.py
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Expand Up @@ -94,14 +94,19 @@ class Line3D(lines.Line2D):
3D line object.
'''

def __init__(self, xs, ys, zs, *args, **kwargs):
def __init__(self, xs, ys, zs, zdir='z', *args, **kwargs):
'''
*zdir* sets with axes to treat as 'z'

Keyword arguments are passed onto :func:`~matplotlib.lines.Line2D`.
'''
lines.Line2D.__init__(self, [], [], *args, **kwargs)
self._verts3d = xs, ys, zs
self.set_3d_data(xs, ys, zs, zdir)

def set_3d_properties(self, zs=0, zdir='z'):
# this is broken, because if the line has
# ever been drawn, these are the projected (x,y)
# see draw()
xs = self.get_xdata()
ys = self.get_ydata()

Expand All @@ -112,6 +117,21 @@ def set_3d_properties(self, zs=0, zdir='z'):
pass
self._verts3d = juggle_axes(xs, ys, zs, zdir)

def set_3d_data(self, xs=None, ys=None, zs=None, zdir='z'):
x_old, y_old, z_old = self._verts3d
if xs is None:
xs = x_old
if ys is None:
ys = y_old
if zs is None:
zs = z_old
try:
zs = float(zs)
zs = [zs for x in xs]
except:
pass
self._verts3d = juggle_axes(xs, ys, zs, zdir)

def draw(self, renderer):
xs3d, ys3d, zs3d = self._verts3d
xs, ys, zs = proj3d.proj_transform(xs3d, ys3d, zs3d, renderer.M)
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