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4469 lines (3950 loc) · 150 KB
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# Cythonize the encode machinery?
import colorsys
from .rate_control import rate
import platform
from math import sqrt, tan, pi
import time
# vpython provides clock in its namespace
clock = time.perf_counter
def sign(x): # for compatibility with Web VPython
if x > 0: return 1
if x < 0: return -1
return 0
import sys
from . import __version__, __gs_version__
from ._notebook_helpers import _isnotebook
from ._vector_import_helper import (vector, mag, norm, cross, dot, adjust_up,
adjust_axis, object_rotate)
def Exit():
# no infinite loop here so build processs can finish.
# print("in atexit")
pass
import atexit
if platform.system() == 'Windows':
atexit.register(Exit)
# List of names that will be imported from this file with import *
__all__ = ['Camera', 'GlowWidget', 'version', 'GSversion', 'Mouse', 'arrow', 'attach_arrow',
'attach_light', 'attach_trail', 'baseObj', 'box', 'bumpmaps', 'button',
'canvas', 'checkbox', 'clock', 'color', 'combin', 'compound', 'cone', 'controls',
'curve', 'curveMethods', 'cylinder', 'distant_light', 'ellipsoid',
'event_return', 'extrusion', 'faces', 'frame', 'gcurve', 'gdots',
'ghbars', 'gobj', 'graph', 'gvbars', 'helix', 'label',
'local_light', 'menu', 'meta_canvas', 'points', 'pyramid',
'quad', 'radio', 'ring', 'set_browser', 'simple_sphere', 'sleep', 'slider', 'sphere',
'standardAttributes', 'text', 'textures', 'triangle', 'vertex',
'wtext', 'winput', 'keysdown', 'sign']
from inspect import signature # Python 3; needed to allow zero arguments in a bound function
# __version__ is the version number of the Jupyter VPython installer, generated in building the installer.
version = [__version__, 'jupyter']
GSversion = [__gs_version__, 'glowscript']
keysdownlist = [] # list of keys currently pressed
# To print immediately, do this:
# print(.....)
# sys.stdout.flush()
##def eprint(*args, **kwargs): # this may output when ordinary print won't
## print(*args, file=sys.stderr, **kwargs)
##
##def jprint(s): # prints to terminal, for debugging purposes
## os.write(1, json.dumps(s, separators=(',', ':')).encode('utf_8')+ b'\n')
# scalar attribute: { <'a' or 'b'>: string }
# string is str(idx)+attrs[<attributename>]+str(attributevalue)
# for example: {'a':'23K1.72'} thickness of object 23 is 1.72
# vector attrribute:
# string is str(idx)+ attrs[<attributename>]+str(val.x)+','+str(val.y)+','+str(val.z)
# for example: {'a':'37f23.54678,32.12345,-65.00123'} axis of object 37
# text attribute:
# string is str(value)
# boolean values are integers (0,1)
# method: {'m': str(idx)+methods[<methodname>]+<value(s) as above>}
# attrs are X in {'a': '23X....'}
__attrs = {'pos':'a', 'up':'b', 'color':'c', 'trail_color':'d', # don't use single and double quotes; available: comma, but maybe that would cause trouble
'ambient':'e', 'axis':'f', 'size':'g', 'origin':'h',
'direction':'j', 'linecolor':'k', 'bumpaxis':'l', 'dot_color':'m',
'foreground':'n', 'background':'o', 'ray':'p', 'center':'E', 'forward':'#', 'resizable':'+',
# scalar attributes
'graph':'q', 'canvas':'r', 'trail_radius':'s',
'visible':'t', 'opacity':'u','shininess':'v', 'emissive':'w',
'make_trail':'x', 'trail_type':'y', 'interval':'z', 'pps':'A', 'retain':'B',
'red':'C', 'green':'D', 'blue':'F','length':'G', 'width':'H', 'height':'I', 'radius':'J',
'thickness':'K', 'shaftwidth':'L', 'headwidth':'M', 'headlength':'N', 'pickable':'O',
'coils':'P', 'xoffset':'Q', 'yoffset':'R',
'border':'S', 'line':'T', 'box':'U', 'space':'V', 'linewidth':'W',
'xmin':'X', 'xmax':'Y', 'ymin':'Z', 'ymax':'`',
'ctrl':'~', 'shift':'!', 'alt':'@',
# text attributes:
'text':'$', 'align':'%', 'caption':'^',
'fast':'-', 'title':'&', 'xtitle':'*', 'ytitle':'(',
# Miscellany:
'lights':')', 'objects':'_', 'bind':'=',
'pixel_pos':'[', 'texpos':']',
'v0':'{', 'v1':'}', 'v2':';', 'v3':':', 'vs':'<', 'type':'>',
'font':'?', 'texture':'/'}
# attrsb are X in {'b': '23X....'}; ran out of easily typable one-character codes
__attrsb = {'userzoom':'a', 'userspin':'b', 'range':'c', 'autoscale':'d', 'fov':'e',
'normal':'f', 'data':'g', 'checked':'h', 'disabled':'i', 'selected':'j',
'vertical':'k', 'min':'l', 'max':'m', 'step':'n', 'value':'o', 'left':'p',
'right':'q', 'top':'r', 'bottom':'s', '_cloneid':'t',
'logx':'u', 'logy':'v', 'dot':'w', 'dot_radius':'x',
'markers':'y', 'legend':'z', 'label':'A', 'delta':'B', 'marker_color':'C',
'size_units':'D', 'userpan':'E', 'scroll':'F', 'choices':'G', 'depth':'H',
'round':'I', 'name':'J', 'offset':'K', 'attach_idx':'L', 'ccw':'M'}
# methods are X in {'m': '23X....'}
# pos is normally updated as an attribute, but for interval-based trails, it is updated (multiply) as a method
__methods = {'select':'a', 'pos':'b', 'start':'c', 'stop':'d', 'clear':'f', # unused eghijklmnopvxyzCDFABu
'plot':'q', 'add_to_trail':'s',
'follow':'t', 'clear_trail':'w',
'bind':'G', 'unbind':'H', 'waitfor':'I', 'pause':'J', 'pick':'K',
'delete':'M', 'capture':'N'}
__vecattrs = ['pos', 'up', 'color', 'trail_color', 'axis', 'size', 'origin',
'direction', 'linecolor', 'bumpaxis', 'ambient', 'add_to_trail',
'foreground', 'background', 'ray', 'ambient', 'center', 'forward', 'normal',
'marker_color', 'offset', 'dot_color']
__textattrs = ['text', 'align', 'caption', 'title', 'xtitle', 'ytitle', 'selected', 'label', 'capture', 'name',
'append_to_caption', 'append_to_title', 'bind', 'unbind', 'pause', 'choices']
def _encode_attr2(sendval, val, ismethods):
s = ''
if sendval in __vecattrs: # it would be good to do some kind of compression of doubles
s += "{:.16G},{:.16G},{:.16G}".format(val[0], val[1], val[2])
elif sendval in __textattrs:
# '\n' doesn't survive JSON transmission, so we replace '\n' with '<br>' (and convert back in glowcomm)
if not isinstance(val, str): val = print_to_string(val)
val = val.replace('\n', '<br>')
s += val
elif sendval == 'rotate':
for p in val:
s += "{:.16G},".format(p)
s = s[:-1]
elif sendval == 'plot' or sendval == 'data':
# for p in val:
# s += "{:.16G},{:.16G},".format(p[0], p[1])
if sendval == 'data' and len(val) == 0: s += "None, None,"
else:
for p in val:
s += "{:.16G},{:.16G},".format(p[0], p[1])
s = s[:-1]
elif sendval in ['v0', 'v1', 'v2', 'v3']: # val is the vertex object referenced by triangle or quad
s += str(val.idx)
elif sendval == 'vs':
if len(val) == 3:
s += "{d},{d},{d}".format(val[0].idx, val[1].idx, val[2].idx)
else:
s += "{d},{d},{d},{d}".format(val[0].idx, val[1].idx, val[2].idx, val[3].idx)
elif ismethods:
#if sendval in ['follow', 'waitfor', 'delete']: val = str(val) # scene.camera.follow(object idx)
s += str(val)
else:
s += "{:.16G}".format(val)
return s
def _encode_attr(D, ismethods): # ismethods is True if a list of method operations
# If ismethods is True, D is [ [idx, method, data], [idx, method, data], etc. ]
# If ismethods is False: D is {idx:{'pos':vec, etc.}, idx:{'pos':vec, etc.}, etc.}
# For 'attrs', convert {'opacity': 0.5, 'idx': 3} to 'a(idx)X(value)' or 'b(idx)X(value)'
# where (idx) is a number, X is the attribute code in attrs, (value) is a number or x,y,z or a string
# For a method, we have {idx, method, value} to be converted to 'm(idx)X(value)'
out = []
if ismethods: # methods; a list
for d in D:
s = 'm'+str(d[0])+__methods[d[1]]
s += _encode_attr2(d[1], d[2], True)
out.append(s)
else: # attributes, a dictionary
for idx,d in D.items():
for sendval,val in d.items():
if sendval in __attrs:
s = 'a'+str(idx)+__attrs[sendval]
else:
s = 'b'+str(idx)+__attrsb[sendval]
s += _encode_attr2(sendval, val, False)
out.append(s)
return out
if sys.version > '3':
long = int
def list_to_vec(L):
return vector(L[0], L[1], L[2])
class baseObj(object):
glow = None
objCnt = 0
sent = True # set to True by a render in the non-notebook case
_view_constructed = False
_canvas_constructing = False
# 'cmds': list of constructors,
# 'attrs': {idx:{'pos':vec, etc.}, idx:{'pos':vec, etc.}, etc.},
# 'methods': [ [idx, method, date], [idx, method, date], etc. ]
updates = {'cmds':[], 'methods':[], 'attrs':{}}
object_registry = {} ## idx -> instance
attach_arrows = []
attach_trails = [] # needed only for functions
follow_objects = [] # entries are [invisible object to follow, function to call for pos, prevous pos]
attrs = set() # each element is (idx, attr name)
@classmethod
def initialize(cls):
cls.updates = {'cmds':[], 'methods':[], 'attrs':{}}
cls.attrs = set()
@classmethod
def empty(cls):
b = cls.updates
return b['cmds'] == [] and b['methods'] == [] and len(cls.attrs) == 0
@classmethod
def handle_attach(cls): # called when about to send data to the browser
## update every attach_arrow if relevant vector has changed
for aa in cls.attach_arrows:
if not aa._run: continue
obj = baseObj.object_registry[aa._object]
if not hasattr(obj, aa.attr): # no longer an attribute of the object
continue
vval = getattr(obj, aa.attr) # could be 'velocity', for example
if not isinstance(vval, vector):
raise AttributeError('attach_arrow attribute "'+aa.attr+'" value must be a vector.')
if aa._last_pos.equals(obj._pos) and aa._last_val.equals(vval): continue
aa._last_val = vector(vval) # keep copies of last vectors
aa._last_pos = vector(obj._pos)
aa.pos = obj._pos
aa.axis = aa._scale*vval
## update every attach_trail that depends on a function
for aa in cls.attach_trails:
if aa._obj == '_func':
fval = aa._func()
if not isinstance(fval, vector):
raise AttributeError('attach_trail value must be a vector')
aa.addmethod('add_to_trail', fval.value)
else:
fval = cls.object_registry[aa._obj].pos
if ( isinstance(aa._last_val, vector) and aa._last_val.equals(fval) ):
continue
aa._last_val = fval
## update every scene.camera.follow(function)
for aa in cls.follow_objects:
obj = aa[0]
val = aa[1]()
lastpos = aa[2]
if val != lastpos:
aa[2] = val
obj.pos = val
def __init__(self, **kwargs):
if not (baseObj._view_constructed or
baseObj._canvas_constructing):
if _isnotebook:
from .with_notebook import _
else:
from .no_notebook import _
baseObj._view_constructed = True
self.idx = baseObj.objCnt ## an integer
self.object_registry[self.idx] = self
if kwargs is not None:
for key, value in kwargs.items():
object.__setattr__(self, key, value)
baseObj.incrObjCnt()
def delete(self):
# Currently delete decrements the object count but doesn't
# delete any objects in the browser....so, let's not decrement
# the count for now.
# baseObj.decrObjCnt()
# The body of this and __del__ are the same other than the
# decrement here, so let's just call __del__.
self.__del__()
def appendcmd(self,cmd):
# The following code makes sure that constructors are sent to the front end first.
cmd['idx'] = self.idx
while not baseObj.sent: # baseObj.sent is always True in the notebook case
time.sleep(0.001)
baseObj.updates['cmds'].append(cmd) # this is an "atomic" (uninterruptable) operation
def addmethod(self, method, data):
while not baseObj.sent: # baseObj.sent is always True in the notebook case
time.sleep(0.001)
baseObj.updates['methods'].append((self.idx, method, data)) # this is an "atomic" (uninterruptable) operation
def addattr(self, attr):
while not baseObj.sent: # baseObj.sent is always True in the notebook case
time.sleep(0.001)
baseObj.attrs.add((self.idx, attr)) # this is an "atomic" (uninterruptable) operation
@classmethod
def package(cls, objdata): # package up the data to send to the browser
ret = {}
m = None
if objdata['cmds'] != []: ret['cmds'] = objdata['cmds']
if objdata['methods'] != []:
m = _encode_attr(objdata['methods'], True)
if objdata['attrs'] != {}:
ret['attrs'] = _encode_attr(objdata['attrs'], False)
if m is not None: ret['attrs'] += m
elif m is not None:
ret['attrs'] = m
return ret
@classmethod
def trigger(cls): # isnotebook; called by a canvas update event from browser, coming from GlowWidget.handle_msg
if cls.empty():
objdata = 'trigger' # handshake with browser
else:
cls.handle_attach()
for a in baseObj.attrs:
idx, attr = a
val = getattr(baseObj.object_registry[idx], attr)
if type(val) is vector: val = [val.x, val.y, val.z]
if idx in baseObj.updates['attrs']:
baseObj.updates['attrs'][idx][attr] = val
else:
baseObj.updates['attrs'][idx] = {attr:val}
objdata = cls.package(baseObj.updates)
sender(objdata)
cls.initialize()
baseObj.sent = True
@classmethod
def incrObjCnt(cls):
cls.objCnt += 1
@classmethod
def decrObjCnt(cls):
cls.objCnt -= 1
def __del__(self):
cmd = {"cmd": "delete", "idx": self.idx}
if (baseObj.glow is not None and sender is not None):
sender([cmd])
else:
self.appendcmd(cmd)
# Jupyter does not immediately transmit data to the browser from a thread,
# which made for an awkward thread in early versions of Jupyter VPython, and
# even caused display mistakes due to losing portions of data sent to the browser
# from within a thread.
# Now there is no threading in Jupyter VPython. Data is sent to the
# browser from the trigger() function, which is called by a
# canvas_update event sent to Python from the browser (glowcomm.js), currently
# every 33 milliseconds. When trigger() is called, it immediately signals
# the browser to set a timeout of 33 ms to send another signal to Python.
# Note that a typical VPython program starts out by creating objects (constructors) and
# specifying their attributes. The 33 ms signal from the browser is adequate to ensure
# prompt data transmissions to the browser.
# The situation with non-notebook use is similar, but the http server is threaded,
# in order to serve glowcomm.html, jpg texture files, and font files, and the
# websocket is also threaded.
# In both the notebook and non-notebook cases output is buffered in baseObj.updates
# and sent as a block to the browser at render times.
class GlowWidget(object):
def __init__(self, wsport=None, wsuri=None):
global sender
baseObj.glow = self
if _isnotebook:
from ipykernel.comm import Comm
if (wsport):
self.comm = Comm(target_name='glow', data={'wsport':wsport, 'wsuri':wsuri})
else:
self.comm = Comm(target_name='glow')
self.comm.on_close(self.handle_close)
self.comm.on_msg(self.handle_msg)
sender = self.comm.send
self.show = True
else:
sender = None
## baseObj.object_registry = {}
## idx -> instance
def handle_msg(self, msg):
events = msg['content']['data'] # this is a list of time-ordered events
for evt in events:
if 'widget' in evt:
obj = baseObj.object_registry[evt['idx']]
if evt['widget'] == 'button':
pass
elif evt['widget'] == 'slider':
obj._value = evt['value']
elif evt['widget'] == 'menu':
obj._selected = obj._choices[evt['value']]
elif evt['widget'] == 'checkbox':
obj._checked = evt['value']
elif evt['widget'] == 'radio':
obj.checked = evt['value']
elif evt['widget'] == 'winput':
obj._text = evt['text']
obj._number = evt['value']
# inspect the bound function and see what it's expecting
a = signature(obj._bind)
if str(a) != '()':
obj._bind( obj )
else:
obj._bind()
else: ## a canvas event
if 'trigger' not in evt:
cvs = baseObj.object_registry[evt['canvas']]
cvs.handle_event(evt)
if _isnotebook:
baseObj.trigger()
def handle_close(self, data):
print ("comm closed")
def _wait(cvs): # wait for an event
cvs._waitfor = None
if _isnotebook: baseObj.trigger() # in notebook environment must send methods immediately
while cvs._waitfor is None:
rate(30)
return cvs._waitfor
class color(object):
black = vector(0,0,0)
white = vector(1,1,1)
red = vector(1,0,0)
green = vector(0,1,0)
blue = vector(0,0,1)
yellow = vector(1,1,0)
cyan = vector(0,1,1)
magenta = vector(1,0,1)
orange = vector(1,0.6,0)
purple = vector(0.4,0.2,0.6)
@classmethod
def gray(cls,luminance):
return vector(luminance,luminance,luminance)
@classmethod
def rgb_to_hsv(cls,v):
T = [v.x, v.y, v.z]
c = colorsys.rgb_to_hsv(*T)
return list_to_vec(c)
@classmethod
def hsv_to_rgb(cls,v):
T = [v.x, v.y, v.z]
c = colorsys.hsv_to_rgb(*T)
return list_to_vec(c)
@classmethod
def rgb_to_grayscale(cls,v):
luminance = 0.21*v.x + 0.71*v.y + 0.07*v.z
return vector(luminance, luminance, luminance)
class textures(object):
flower = ":flower_texture.jpg"
granite=":granite_texture.jpg"
gravel=":gravel_texture.jpg"
earth=":earth_texture.jpg"
metal=":metal_texture.jpg"
rock=":rock_texture.jpg"
rough=":rough_texture.jpg"
rug=":rug_texture.jpg"
stones=":stones_texture.jpg"
stucco=":stucco_texture.jpg"
wood=":wood_texture.jpg"
wood_old=":wood_old_texture.jpg"
class bumpmaps(object):
gravel=":gravel_bumpmap.jpg"
rock=":rock_bumpmap.jpg"
stones=":stones_bumpmap.jpg"
stucco=":stucco_bumpmap.jpg"
wood_old=":wood_old_bumpmap.jpg"
class standardAttributes(baseObj):
# vector-no-interactions, vector-interactions, scalar-no-interactions, scalar-interactions
attrLists = {'box':[['pos', 'color', 'trail_color'],
['axis', 'size', 'up'],
['visible', 'opacity','shininess', 'emissive',
'make_trail', 'trail_type', 'interval',
'retain', 'trail_color', 'trail_radius', 'texture', 'pickable'],
['red', 'green', 'blue','length', 'width', 'height']],
'group':[['pos', 'color', 'trail_color'],
['axis', 'size', 'up'],
['visible', 'make_trail', 'trail_type', 'interval',
'retain', 'trail_color', 'trail_radius'],
['red', 'green', 'blue','length', 'width', 'height']],
'sphere':[['pos', 'color', 'trail_color'],
['axis', 'size', 'up'],
['visible', 'opacity','shininess', 'emissive',
'make_trail', 'trail_type', 'interval',
'retain', 'trail_color', 'trail_radius', 'texture', 'pickable'],
['red', 'green', 'blue','length', 'width', 'height', 'radius']],
'simple_sphere':[['pos', 'color', 'trail_color'],
['axis', 'size', 'up'],
['visible', 'opacity','shininess', 'emissive',
'make_trail', 'trail_type', 'interval',
'retain', 'trail_color', 'trail_radius', 'texture', 'pickable'],
['red', 'green', 'blue','length', 'width', 'height', 'radius']],
'arrow':[['pos', 'color', 'trail_color'],
['axis', 'size', 'up'],
['visible', 'opacity',
'shininess', 'emissive', 'texture', 'frame', 'material',
'make_trail', 'trail_type', 'interval',
'retain', 'trail_color', 'trail_radius', 'texture',
'round', 'shaftwidth', 'headwidth', 'headlength', 'pickable'],
['red', 'green', 'blue','length', 'width', 'height']],
'ring':[['pos', 'color', 'trail_color', 'size'],
['axis', 'up'],
['visible', 'opacity','shininess', 'emissive',
'make_trail', 'trail_type', 'interval',
'retain', 'trail_color', 'trail_radius', 'texture', 'pickable'],
['red', 'green', 'blue','length', 'width', 'height', 'thickness']],
'helix':[['pos', 'color', 'trail_color'],
['axis', 'size', 'up'],
['visible', 'opacity','shininess', 'emissive',
'make_trail', 'trail_type', 'interval', 'ccw',
'retain', 'trail_color', 'trail_radius', 'coils', 'thickness', 'pickable'],
['red', 'green', 'blue','length', 'width', 'height', 'radius']],
'curve':[['origin', 'color'],
['axis', 'size', 'up'],
['visible', 'shininess', 'emissive', 'radius', 'retain', 'pickable'],
['red', 'green', 'blue','length', 'width', 'height']],
'points':[['color'],
[],
['visible', 'opacity', 'shininess', 'emissive', 'radius', 'retain', 'pickable', 'size_units'],
['red', 'green', 'blue']],
'label':[['pos', 'color', 'background', 'linecolor'],
[],
['visible', 'xoffset', 'yoffset', 'font', 'height', 'opacity',
'border', 'line', 'box', 'space', 'align', 'linewidth', 'pixel_pos'],
['text']],
'local_light':[['pos', 'color', 'offset'],
[],
['visible', 'attach_idx'],
[]],
'distant_light':[['direction', 'color'],
[],
['visible'],
[]],
'compound':[['pos', 'color', 'trail_color'],
['axis', 'size', 'up', 'origin'],
['visible', 'opacity','shininess', 'emissive',
'make_trail', 'trail_type', 'interval', 'texture',
'retain', 'trail_color', 'trail_radius', 'obj_idxs', 'pickable'],
['red', 'green', 'blue', 'length', 'width', 'height']],
'vertex':[['pos', 'color', 'normal', 'bumpaxis', 'texpos'],
[],
['visible', 'opacity','shininess', 'emissive'],
['red', 'green', 'blue']],
'triangle': [ [],
[],
['texture', 'bumpmap', 'visible', 'pickable'],
['v0', 'v1', 'v2'] ],
'quad': [ [],
[],
['texture', 'bumpmap', 'visible', 'pickable'],
['v0', 'v1', 'v2', 'v3'] ],
'attach_trail': [ ['color'],
[],
['radius', 'pps', 'retain', 'type', '_obj'],
[] ],
'wtext': [[],
[],
['location', 'text'],
[]],
'extrusion':[ ['pos', 'color', 'start_face_color', 'end_face_color',
'start_normal', 'end_normal'],
[ 'axis', 'size', 'up' ],
['path', 'shape', 'visible', 'opacity','shininess', 'emissive',
'show_start_face', 'show_end_face', 'smooth', 'smooth_joints', 'sharp_joints',
'scale', 'xscale', 'yscale', 'twist',
'make_trail', 'trail_type', 'interval', 'show_start_face', 'show_end_face',
'retain', 'trail_color', 'trail_radius', 'texture', 'pickable' ],
['red', 'green', 'blue','length', 'width', 'height'] ],
'text': [ ['pos', 'up', 'color', 'start_face_color', 'end_face_color', 'axis'],
[],
['visible', 'opacity','shininess', 'emissive',
'make_trail', 'trail_type', 'interval',
'retain', 'trail_color', 'trail_radius', 'obj_idxs', 'pickable',
'align', 'text', 'font', 'billboard', 'show_start_face', 'show_end_face', 'descender',
'vertical_spacing', 'depth', 'length', 'width', 'height'],
['red', 'green', 'blue'] ]
}
attrLists['pyramid'] = attrLists['box']
attrLists['cylinder'] = attrLists['sphere']
attrLists['cone'] = attrLists['sphere']
attrLists['ellipsoid'] = attrLists['sphere']
def setup(self, args):
super(standardAttributes, self).__init__()
self._constructing = True ## calls to setters are from constructor
objName = self._objName = args['_objName'] ## identifies object type
if objName[:8] == 'compound': objName = 'compound'
del args['_objName']
# default values
self._sizing = True # axis/size connection is the default; False for sphere, ring, text, compound
self._pos = vector(0,0,0)
self._axis = vector(1,0,0)
self._up = vector(0,1,0)
self._color = vector(1,1,1)
defaultSize = args['_default_size']
if defaultSize is not None: # is not points or vertex or triangle or quad
self._size = defaultSize
del args['_default_size']
self._texture = None
self._opacity = 1.0
self._shininess = 0.6
self._emissive = False
self._make_trail = False
self._trail_type = 'curve'
self._trail_color = self._color
self._interval = 0 # means no interval set
self._retain = -1
self._trail_radius = None # set by default after size set
self._canvas = None
if 'canvas' in args: ## converted to idx below
self._canvas = args['canvas']
self._visible = True
self._frame = None
self._size_units = 'pixels'
self._texture = None
self._pickable = True
self._offset = vector(0,0,0)
self._attach_idx = None
self._save_oldaxis = None # used in linking axis and up
self._save_oldup = None # used in linking axis and up
_special_clone = None
if '_cloneid' in args: # text, extrusion, or compound is being cloned
_special_clone = args['_cloneid']
del args['_cloneid']
argsToSend = [] ## send to GlowScript only attributes specified in constructor
## override defaults for vector attributes without side effects
attrs = standardAttributes.attrLists[objName][0]
for a in attrs:
if a in args:
argsToSend.append(a)
val = args[a]
if objName == 'extrusion' and a == 'color':
setattr(self, '_'+a, val) # '_' bypasses setters
else:
if isinstance(val, vector): setattr(self, '_'+a, vector(val)) # '_' bypasses setters; copy of val
else: raise AttributeError(a+' must be a vector')
del args[a]
# Track side effects of modifying size, axis, or up
# For consistency with GlowScript, axis is listed before up in the attrLists,
# so that setting axis may affect up, but then setting up can affect axis afterwards.
attrs = standardAttributes.attrLists[objName][1] # vector attributes with interactions
for a in attrs:
if a in args:
val = args[a]
if isinstance(val, vector):
setattr(self, a, vector(val))
if a not in argsToSend:
argsToSend.append(a)
if a == 'size':
self._axis = self._axis.norm()*val.x
elif a == 'axis':
self._size.x = mag(val)
self.axis = val # this will have the side effect of modifying up
elif a == 'up':
self.up = val # this will have the side effect of modifying axis
else: raise AttributeError(a+' must be a vector')
del args[a]
if defaultSize is not None:
self._trail_radius = 0.1 * self._size.y ## default depends on size
elif objName == 'points':
self._trail_radius = self._radius # points object
# override defaults for scalar attributes without side effects
attrs = standardAttributes.attrLists[objName][2]
for a in attrs:
if a in args:
argsToSend.append(a)
setattr(self, '_'+a, args[a]) ## by-pass setters
del args[a]
scalarInteractions={'red':'color', 'green':'color', 'blue':'color', 'radius':'size', 'thickness':'size',
'length':'size', 'height':'size', 'width':'size', 'v0':'v0', 'v1':'v1',
'v2':'v2', 'v3':'v3', 'text':'text'}
# override defaults for scalar attributes with side effects
attrs = standardAttributes.attrLists[objName][3]
for a in attrs:
if a in args:
setattr(self, a, args[a]) ## use setter to take care of side effects
if scalarInteractions[a] not in argsToSend:
argsToSend.append(scalarInteractions[a]) # e.g. if a is radius, send size
# The following makes sure that size.x is nonzero.
# It will be reset when axis is no longer zero.
if defaultSize is not None and self._size._x == 0: self._size._x = 1
del args[a]
# set values of user-defined attributes
for key, value in args.items(): # Assign all other properties
setattr(self, key, value)
cmd = {"cmd": objName, "idx": self.idx}
# now put all args to send into cmd
nosize = ['compound', 'extrusion', 'text'] # size will be computed by the constuctor
for a in argsToSend:
aval = getattr(self,a)
if isinstance(aval, vector):
aval = aval.value
elif isinstance(aval, vertex):
aval = aval.idx
if objName in nosize and a == 'size': continue # do not send superfluous size
cmd[a] = aval
# set canvas
if self.canvas is None: ## not specified in constructor
self.canvas = canvas.get_selected()
#cmd["attrs"].append({"attr": 'canvas', "value": self.canvas.idx})
cmd['canvas'] = self.canvas.idx
# Lights are listed in canvas.lights, not canvas.objects
if not (objName == 'distant_light' or objName == 'local_light'):
self.canvas.objz(self,'add')
self._constructing = False ## from now on any setter call will not be from constructor
# _special_clone is True if text, extrusion, or compound objects
if _special_clone is not None: cmd["_cloneid"] = _special_clone
self.appendcmd(cmd)
# attribute vectors have these methods which call self.addattr()
# The vector class calls a change function when there's a change in x, y, or z.
noSize = ['points', 'label', 'vertex', 'triangle', 'quad', 'attach_trail']
if not (objName == 'extrusion'): #
self._color.on_change = self._on_color_change
if objName not in noSize:
self._axis.on_change = self._on_axis_change
self._size.on_change = self._on_size_change
self._up.on_change = self._on_up_change
noPos = ['curve', 'points', 'triangle', 'quad']
if objName not in noPos:
self._pos.on_change = self._on_pos_change
elif objName == 'curve':
self._origin.on_change = self._on_origin_change
if objName == 'vertex':
self._bumpaxis.on_change = self._on_bumpaxis_change
self._normal.on_change = self._on_normal_change
# Ensure that if axis or up is <0,0,0> in constructor, we'll recover eventually:
if self._axis.mag2 == 0: self._save_oldaxis = vector(1,0,0)
if self._up.mag2 == 0: self._save_oldup = vector(0,1,0)
@property
def pos(self):
return self._pos
@pos.setter
def pos(self,value):
self._pos.value = value
if not self._constructing:
if self._make_trail and self._interval > 0:
self.addmethod('pos', value.value)
else:
self.addattr('pos')
@property
def up(self):
return self._up
@up.setter
def up(self,value):
self._save_oldup = adjust_axis(self._up, value, self._axis, self._save_oldup) # this sets self._axis and self._up
if not self._constructing:
self.addattr('up')
@property
def axis(self):
return self._axis
@axis.setter
def axis(self,value): # sphere or ring or text or compound have no axis/size link
if value.mag2 == 0:
if self._save_oldaxis is None: self._save_oldaxis = self._axis
self._axis = value
else:
self._save_oldaxis = adjust_up(self._axis, value, self._up, self._save_oldaxis) # this sets self._axis and self._up
if not self._constructing:
self.addattr('axis')
if self._sizing:
self._size._x = value.mag # changing axis length changes size.x
@property
def size(self):
return self._size
@size.setter
def size(self,value): # sphere or ring or text or compound have no axis/size link
currentaxis = self._axis
self._size = value
if value.x == 0:
if self._save_oldaxis is not None:
currentaxis = self._save_oldaxis
self._save_oldaxis = None
else:
currentaxis = vector(1,0,0)
if not self._constructing:
self.addattr('size')
if self._sizing:
self._axis = currentaxis.norm()*value.x
@property
def length(self):
return self._size.x
@length.setter
def length(self,value):
if value == 0:
if self._save_oldaxis is None: self._save_oldaxis = vector(self._axis.x, self._axis.y, self._axis.z)
self._axis = vector(0,0,0)
self._size._x = 0
else:
if self._save_oldaxis is not None:
self._axis = self._save_oldaxis
self._save_oldaxis = None
if self._size._x == 0:
self.axis = vector(value, 0, 0)
else:
if self._sizing:
self.axis = value*self._axis.norm() # this will set length if self._sizing
else:
self._size._x = value # for objects whose axis and size are not linked
if not self._constructing:
self.addattr('axis')
self.addattr('size')
@property
def height(self):
return self._size.y
@height.setter
def height(self,value):
self._size._y = value
if not self._constructing:
self.addattr('size')
@property
def width(self):
return self._size.z
@width.setter
def width(self,value):
self._size._z = value
if not self._constructing:
self.addattr('size')
@property
def color(self):
return self._color
@color.setter
def color(self,value):
if isinstance(self._color, list): # may be a list of extrusion colors of the form [ [1,0,0], [0,1,0] ]
self._color = vector(0,0,0) # change list to a vector
self._color.value = value # modify the vector
self._color.value = value
if not self._constructing:
self.addattr('color')
@property
def red(self):
return self._color.x
@red.setter
def red(self,value):
self._color = (value,self.green,self.blue)
if not self._constructing:
self.addattr('color')
@property
def green(self):
return self._color.y
@green.setter
def green(self,value):
self._color = (self.red,value,self.blue)
if not self._constructing:
self.addattr('color')
@property
def blue(self):
return self._color.z
@blue.setter
def blue(self,value):
self._color = (self.red,self.green,value)
if not self._constructing:
self.addattr('color')
@property
def visible(self):
return self._visible
@visible.setter
def visible(self,value):
self._visible = value
if not self._constructing:
self.addattr('visible')
@property
def pickable(self):
return self._pickable
@pickable.setter
def pickable(self,value):
self._pickable = value
if not self._constructing:
self.addattr('pickable')
@property
def canvas(self):
return self._canvas
@canvas.setter
def canvas(self,value):
self._canvas = value
if not self._constructing:
raise AttributeError('canvas cannot be modified')
@property
def opacity(self):
return self._opacity
@opacity.setter
def opacity(self,value):
self._opacity = value
if not self._constructing:
self.addattr('opacity')
@property
def emissive(self):
return self._emissive
@emissive.setter
def emissive(self,value):
self._emissive = value
if not self._constructing:
self.addattr('emissive')
@property
def texture(self):
return self._texture
@texture.setter
def texture(self,value):
self._texture = value
if not self._constructing:
self.appendcmd({"texture":value})
@property
def shininess(self):
return self._shininess
@shininess.setter
def shininess(self,value):
self._shininess = value
if not self._constructing:
self.addattr('shininess')
@property
def make_trail(self):
return self._make_trail
@make_trail.setter
def make_trail(self,value):
self._make_trail = value
if not self._constructing:
self.addattr('make_trail')
@property
def trail_type(self):
return self._trail_type
@trail_type.setter
def trail_type(self,value):
if (value not in ['curve', 'points']):
raise Exception("ArgumentError: trail_type must be 'curve' or 'points'")
self._trail_type = value
if not self._constructing:
self.addattr('trail_type')
@property
def trail_color(self):
return self._trail_color
@trail_color.setter
def trail_color(self, value):
if isinstance(value, vector):
self._trail_color.value = value
else:
raise TypeError('trail_color must be a vector')