def flyAlong(path="flypath", upvector=[0.0, 1.0, 0.0], sleeptime=None):
"""Fly through the current scene along the flypath.
- `flypath`: a PolyLine or plex-2 Formex.
"""
from plugins.curve import PolyLine
if type(path) is str:
path = named(path)
if not path:
warning("You have to define a flypath first!")
return
if isinstance(path, PolyLine):
path = path.toFormex()
if path.nplex() != 2:
warning("The flypath should be a plex-2 Formex!")
for eye, center in path:
pf.debug("Eye: %s; Center: %s" % (eye, center))
pf.canvas.camera.lookAt(eye, center, upvector)
pf.canvas.display()
pf.canvas.update()
image.saveNext()
if sleeptime is None:
sleeptime = pf.cfg["draw/flywait"]
sleeptime = float(sleeptime)
if sleeptime > 0.0:
sleep(sleeptime)
pf.canvas.camera.setCenter(*center)
pf.canvas.camera.setDist(coords.length(center - eye))
pf.canvas.update()
def flyAlong(path='flypath',upvector=[0.,1.,0.],sleeptime=None):
"""Fly through the scene along the flypath."""
if type(path) is str:
path = named(path)
if not path:
warning("You have to define a flypath first!")
return
if path.nplex() != 2:
warning("The flypath should be a plex-2 Formex!")
for eye,center in path:
GD.debug("Eye: %s; Center: %s" % (eye,center))
GD.canvas.camera.lookAt(eye,center,upvector)
GD.canvas.display()
GD.canvas.update()
image.saveNext()
if sleeptime is None:
sleeptime = GD.cfg['draw/flywait']
sleeptime = float(sleeptime)
if sleeptime > 0.0:
sleep(sleeptime)
GD.canvas.camera.setCenter(*center)
GD.canvas.camera.setDist(coords.length(center-eye))
GD.canvas.update()
def flyAlong(path,upvector=[0.,1.,0.],sleeptime=None):
for seg in path:
GD.debug("Eye: %s; Center: %s" % (seg[0],seg[1]))
GD.canvas.camera.lookAt(seg[0],seg[1],upvector)
GD.canvas.display()
GD.canvas.update()
image.saveNext()
if sleeptime is None:
sleeptime = GD.cfg['draw/flywait']
sleeptime = float(sleeptime)
if sleeptime > 0.0:
sleep(sleeptime)
def flyAlong(path,upvector=[0.,1.,0.],sleeptime=None):
"""Fly through the current scene along the specified path.
This function moves the camera through the subsequent points
of a path, looing at the next point of the path, and keeping
the upvector of the camera oriented along the specified direction.
- `path`: a PolyLine or plex-2 Formex specifyin the camera path.
- `upvector`: the direction of the vertical axis of the camera.
- `sleeptime`: a delay between subsequent images, to slow down
the camera movement.
"""
from plugins.curve import PolyLine
try:
if not isinstance(path,Formex):
path = path.toFormex()
if not path.nplex() in (2,3):
raise ValueError
except:
raise ValueError,"The camera path should be (convertible to) a plex-2 or plex-3 Formex!"
if sleeptime is None:
sleeptime = pf.cfg['draw/flywait']
saved = delay(sleeptime)
saved1 = pf.GUI.actions['Continue'].isEnabled()
pf.GUI.actions['Continue'].setEnabled(True)
for eye,center in path:
pf.debug("Eye: %s; Center: %s" % (eye,center))
pf.canvas.camera.lookAt(eye,center,upvector)
wait()
pf.canvas.display()
pf.canvas.update()
image.saveNext()
delay(saved)
pf.GUI.actions['Continue'].setEnabled(saved1)
pf.canvas.camera.setCenter(*center)
pf.canvas.camera.setDist(coords.length(center-eye))
pf.canvas.update()
def draw(
F,
view=None,
bbox=None,
color="prop",
colormap=None,
bkcolor=None,
bkcolormap=None,
alpha=None,
mode=None,
linewidth=None,
linestipple=None,
shrink=None,
marksize=None,
wait=True,
clear=None,
allviews=False,
highlight=False,
flat=False,
):
"""Draw object(s) with specified settings and direct camera to it.
The first argument is an object to be drawn. All other arguments are
settings that influence how the object is being drawn.
F is either a Formex or a TriSurface object, or a name of such object
(global or exported), or a list thereof.
If F is a list, the draw() function is called repeatedly with each of
ithe items of the list as first argument and with the remaining arguments
unchanged.
The remaining arguments are drawing options. If None, they are filled in
from the current viewport drawing options.
view is either the name of a defined view or 'last' or None.
Predefined views are 'front','back','top','bottom','left','right','iso'.
With view=None the camera settings remain unchanged (but might be changed
interactively through the user interface). This may make the drawn object
out of view!
With view='last', the camera angles will be set to the same camera angles
as in the last draw operation, undoing any interactive changes.
The initial default view is 'front' (looking in the -z direction).
bbox specifies the 3D volume at which the camera will be aimed (using the
angles set by view). The camera position wil be set so that the volume
comes in view using the current lens (default 45 degrees).
bbox is a list of two points or compatible (array with shape (2,3)).
Setting the bbox to a volume not enclosing the object may make the object
invisible on the canvas.
The special value bbox='auto' will use the bounding box of the objects
getting drawn (object.bbox()), thus ensuring that the camera will focus
on these objects.
The special value bbox=None will use the bounding box of the previous
drawing operation, thus ensuring that the camera's target volume remains
unchanged.
color,colormap,linewidth,alpha,marksize are passed to the
creation of the 3D actor.
if color is None, it is drawn with the color specified on creation.
if color == 'prop' and a colormap was installed, props define color.
else, color should be an array of RGB values, either with shape
(3,) for a single color, or (nelems,3) for differently colored
elements
shrink is a floating point shrink factor that will be applied to object
before drawing it.
If the Formex has properties and a color list is specified, then the
the properties will be used as an index in the color list and each member
will be drawn with the resulting color.
If color is one color value, the whole Formex will be drawn with
that color.
Finally, if color=None is specified, the whole Formex is drawn in black.
Each draw action activates a locking mechanism for the next draw action,
which will only be allowed after drawdelay seconds have elapsed. This
makes it easier to see subsequent images and is far more elegant that an
explicit sleep() operation, because all script processing will continue
up to the next drawing instruction.
The value of drawdelay is set in the config, or 2 seconds by default.
The user can disable the wait cycle for the next draw operation by
specifying wait=False. Setting drawdelay=0 will disable the waiting
mechanism for all subsequent draw statements (until set >0 again).
"""
# Facility for drawing database objects by name
if type(F) == str:
F = named(F)
if F is None:
return None
# We need to get the default for bbox before processing a list,
# because bbox should be set only once for the whole list of objects
if bbox is None:
bbox = pf.canvas.options.get("bbox", "auto")
if type(F) == list:
actor = []
nowait = False
# print "DRAWING LIST WITH BBOX %s" % bbox
save_bbox = bbox
for Fi in F:
if Fi is F[-1]:
nowait = wait
# print "DRAWING WITH BBOX %s, VIEW %s" % (bbox,view)
actor.append(
draw(
Fi,
view,
bbox,
color,
colormap,
bkcolor,
bkcolormap,
alpha,
mode,
linewidth,
linestipple,
shrink,
marksize,
wait=nowait,
clear=clear,
allviews=allviews,
highlight=highlight,
flat=flat,
)
)
if Fi is F[0]:
clear = False
view = None
bbox = "last"
bbox = save_bbox
if bbox == "auto":
bbox = coords.bbox(actor)
pf.canvas.setCamera(bbox, view)
pf.canvas.update()
return actor
# We now should have a single object to draw
# Check if it is something we can draw
if not hasattr(F, "actor") and hasattr(F, "toFormex"):
pf.debug("CONVERTING %s TO FORMEX TO ENABLE DRAWING" % type(F))
F = F.toFormex()
if not hasattr(F, "actor"):
# Don't know how to draw this object
raise RuntimeError, "draw() can not draw objects of type %s" % type(F)
# Fill in the remaining defaults
if shrink is None:
shrink = pf.canvas.options.get("shrink", None)
if marksize is None:
marksize = pf.canvas.options.get("marksize", pf.cfg.get("marksize", 5.0))
if alpha is None:
alpha = pf.canvas.options.get("alpha", 0.5)
# Create the colors
if color == "prop":
if hasattr(F, "p"):
color = F.prop
elif hasattr(F, "prop"):
color = F.prop
else:
color = colors.black
elif color == "random":
# create random colors
color = numpy.random.rand(F.nelems(), 3)
pf.GUI.drawlock.wait()
if clear is None:
clear = pf.canvas.options.get("clear", False)
if clear:
clear_canvas()
if view is not None and view != "last":
pf.debug("SETTING VIEW to %s" % view)
setView(view)
pf.GUI.setBusy()
if shrink is not None:
F = _shrink(F, shrink)
try:
actor = F.actor(
color=color,
colormap=colormap,
bkcolor=bkcolor,
bkcolormap=bkcolormap,
alpha=alpha,
mode=mode,
linewidth=linewidth,
linestipple=linestipple,
marksize=marksize,
)
if actor is None:
return None
if flat:
actor.specular = 0.0
if highlight:
pf.canvas.addHighlight(actor)
else:
pf.canvas.addActor(actor)
if view is not None or bbox not in [None, "last"]:
pf.debug("CHANGING VIEW to %s" % view)
if view == "last":
view = pf.canvas.options["view"]
if bbox == "auto":
bbox = F.bbox()
pf.debug("SET CAMERA TO: bbox=%s, view=%s" % (bbox, view))
pf.canvas.setCamera(bbox, view)
# setView(view)
pf.canvas.update()
pf.app.processEvents()
# pf.debug("AUTOSAVE %s" % image.autoSaveOn())
if image.autoSaveOn():
image.saveNext()
if wait: # make sure next drawing operation is retarded
pf.GUI.drawlock.lock()
finally:
pf.GUI.setBusy(False)
return actor
def draw(F, view=None,bbox='auto',
color='prop',colormap=None,linewidth=None,alpha=0.5,
shrink=None,eltype=None,marksize=None,color1=None,
wait=True,clear=None,allviews=False):
"""Draw object(s) with specified settings and direct camera to it.
The first argument is an object to be drawn. All other arguments are
settings that influence how the object is being drawn.
F is either a Formex or a Surface object, or a name of such object
(global or exported), or a list thereof.
If F is a list, the draw() function is called repeatedly with each of
ithe items of the list as first argument and with the remaining arguments
unchanged.
view is either the name of a defined view or 'last' or None.
Predefined views are 'front','back','top','bottom','left','right','iso'.
With view=None the camera settings remain unchanged (but might be changed
interactively through the user interface). This may make the drawn object
out of view!
With view='last', the camera angles will be set to the same camera angles
as in the last draw operation, undoing any interactive changes.
The initial default view is 'front' (looking in the -z direction).
bbox specifies the 3D volume at which the camera will be aimed (using the
angles set by view). The camera position wil be set so that the volume
comes in view using the current lens (default 45 degrees).
bbox is a list of two points or compatible (array with shape (2,3)).
Setting the bbox to a volume not enclosing the object may make the object
invisible on the canvas.
The default bbox='auto' will use the bounding box of the objects getting
drawn (object.bbox()), thus ensuring that the camera will focus on the
shown object.
With bbox=None, the camera's target volume remains unchanged.
color,colormap,linewidth,alpha,eltype,marksize,color1 are passed to the
creation of the 3D actor.
shrink is a floating point shrink factor that will be applied to object
before drawing it.
If the Formex has properties and a color list is specified, then the
the properties will be used as an index in the color list and each member
will be drawn with the resulting color.
If color is one color value, the whole Formex will be drawn with
that color.
Finally, if color=None is specified, the whole Formex is drawn in black.
Each draw action activates a locking mechanism for the next draw action,
which will only be allowed after drawdelay seconds have elapsed. This
makes it easier to see subsequent images and is far more elegant that an
explicit sleep() operation, because all script processing will continue
up to the next drawing instruction.
The value of drawdelay is set in the config, or 2 seconds by default.
The user can disable the wait cycle for the next draw operation by
specifying wait=False. Setting drawdelay=0 will disable the waiting
mechanism for all subsequent draw statements (until set >0 again).
"""
global allowwait
if type(F) == list:
actor = []
nowait = False
for Fi in F:
if Fi == F[-1]:
nowait = wait
actor.append(draw(Fi,view,bbox,
color,colormap,linewidth,alpha,
shrink,eltype,marksize,color1,
wait,clear,allviews))
if Fi == F[0]:
clear = False
view = None
return actor
if type(F) == str:
F = named(F)
if F is None:
return None
if not (isinstance(F,formex.Formex) or
isinstance(F,surface.Surface) or
isinstance(F,tools.Plane)):
raise RuntimeError,"draw() can not draw objects of type %s" % type(F)
if allowwait:
drawwait()
if clear is None:
clear = DrawOptions.get('clear',False)
if clear:
clear_canvas()
if view is not None and view != 'last':
GD.debug("SETTING VIEW to %s" % view)
setView(view)
if shrink is None:
shrink = DrawOptions.get('shrink',None)
# Create the colors
if color == 'prop':
if hasattr(F,'p'):
color = F.p
else:
color = colors.black
elif color == 'random':
# create random colors
color = numpy.random.random((F.nelems(),3))
try:
marksize = float(marksize)
except:
marksize = GD.cfg.get('marksize',0.01)
GD.gui.setBusy()
if shrink is not None:
#GD.debug("DRAWING WITH SHRINK = %s" % shrink)
F = _shrink(F,shrink)
try:
if isinstance(F,formex.Formex):
if color1 is not None:
#GD.debug("DRAWING WITH COLOR1\n%s" % str(color1))
canvas.glSmooth()
actor = actors.FormexActor(F,color=color,colormap=colormap,linewidth=linewidth,eltype=eltype,marksize=marksize,alpha=alpha,color1=color1)
elif isinstance(F,surface.Surface):
actor = actors.SurfaceActor(F,color=color,colormap=colormap,linewidth=linewidth,alpha=alpha)
elif isinstance(F,tools.Plane):
return drawPlane(F.point(),F.normal())
GD.canvas.addActor(actor)
if view is not None or bbox is not None:
#GD.debug("CHANGING VIEW to %s" % view)
if view == 'last':
view = DrawOptions['view']
if bbox == 'auto':
bbox = F.bbox()
#GD.debug("SET CAMERA TO: bbox=%s, view=%s" % (bbox,view))
GD.canvas.setCamera(bbox,view)
#setView(view)
GD.canvas.update()
GD.app.processEvents()
#GD.debug("AUTOSAVE %s" % image.autoSaveOn())
if image.autoSaveOn():
image.saveNext()
if allowwait and wait:
## if stepmode:
## drawblock()
## else:
drawlock()
finally:
GD.gui.setBusy(False)
return actor