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def _patch ( ) : import sys from OpenGL import GL if sys . version_info > ( 3 , ) : buffersubdatafunc = GL . glBufferSubData if hasattr ( buffersubdatafunc , 'wrapperFunction' ) : buffersubdatafunc = buffersubdatafunc . wrapperFunction _m = sys . modules [ buffersubdatafunc . __module__ ] _m . long = int try : from Ope...
Monkey - patch pyopengl to fix a bug in glBufferSubData .
3,001
def _inject ( ) : NS = _pyopengl2 . __dict__ for glname , ourname in _pyopengl2 . _functions_to_import : func = _get_function_from_pyopengl ( glname ) NS [ ourname ] = func
Copy functions from OpenGL . GL into _pyopengl namespace .
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def _get_vispy_font_filename ( face , bold , italic ) : name = face + '-' name += 'Regular' if not bold and not italic else '' name += 'Bold' if bold else '' name += 'Italic' if italic else '' name += '.ttf' return load_data_file ( 'fonts/%s' % name )
Fetch a remote vispy font
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def _hex_to_rgba ( hexs ) : hexs = np . atleast_1d ( np . array ( hexs , '|U9' ) ) out = np . ones ( ( len ( hexs ) , 4 ) , np . float32 ) for hi , h in enumerate ( hexs ) : assert isinstance ( h , string_types ) off = 1 if h [ 0 ] == '#' else 0 assert len ( h ) in ( 6 + off , 8 + off ) e = ( len ( h ) - off ) // 2 out...
Convert hex to rgba permitting alpha values in hex
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def _rgb_to_hex ( rgbs ) : rgbs , n_dim = _check_color_dim ( rgbs ) return np . array ( [ '#%02x%02x%02x' % tuple ( ( 255 * rgb [ : 3 ] ) . astype ( np . uint8 ) ) for rgb in rgbs ] , '|U7' )
Convert rgb to hex triplet
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def _rgb_to_hsv ( rgbs ) : rgbs , n_dim = _check_color_dim ( rgbs ) hsvs = list ( ) for rgb in rgbs : rgb = rgb [ : 3 ] idx = np . argmax ( rgb ) val = rgb [ idx ] c = val - np . min ( rgb ) if c == 0 : hue = 0 sat = 0 else : if idx == 0 : hue = ( ( rgb [ 1 ] - rgb [ 2 ] ) / c ) % 6 elif idx == 1 : hue = ( rgb [ 2 ] - ...
Convert Nx3 or Nx4 rgb to hsv
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def _hsv_to_rgb ( hsvs ) : hsvs , n_dim = _check_color_dim ( hsvs ) rgbs = list ( ) for hsv in hsvs : c = hsv [ 1 ] * hsv [ 2 ] m = hsv [ 2 ] - c hp = hsv [ 0 ] / 60 x = c * ( 1 - abs ( hp % 2 - 1 ) ) if 0 <= hp < 1 : r , g , b = c , x , 0 elif hp < 2 : r , g , b = x , c , 0 elif hp < 3 : r , g , b = 0 , c , x elif hp ...
Convert Nx3 or Nx4 hsv to rgb
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def _lab_to_rgb ( labs ) : labs , n_dim = _check_color_dim ( labs ) y = ( labs [ : , 0 ] + 16. ) / 116. x = ( labs [ : , 1 ] / 500. ) + y z = y - ( labs [ : , 2 ] / 200. ) xyz = np . concatenate ( ( [ x ] , [ y ] , [ z ] ) ) over = xyz > 0.2068966 xyz [ over ] = xyz [ over ] ** 3. xyz [ ~ over ] = ( xyz [ ~ over ] - 0....
Convert Nx3 or Nx4 lab to rgb
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def get ( self , tags ) : value = tags . get ( self . name , '' ) for name in self . alternate_tags : value = value or tags . get ( name , '' ) value = value or self . default return value
Find an adequate value for this field from a dict of tags .
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def _set_config ( c ) : func = sdl2 . SDL_GL_SetAttribute func ( sdl2 . SDL_GL_RED_SIZE , c [ 'red_size' ] ) func ( sdl2 . SDL_GL_GREEN_SIZE , c [ 'green_size' ] ) func ( sdl2 . SDL_GL_BLUE_SIZE , c [ 'blue_size' ] ) func ( sdl2 . SDL_GL_ALPHA_SIZE , c [ 'alpha_size' ] ) func ( sdl2 . SDL_GL_DEPTH_SIZE , c [ 'depth_siz...
Set gl configuration for SDL2
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def create_response ( self , message = None , end_session = False , card_obj = None , reprompt_message = None , is_ssml = None ) : response = dict ( self . base_response ) if message : response [ 'response' ] = self . create_speech ( message , is_ssml ) response [ 'response' ] [ 'shouldEndSession' ] = end_session if ca...
message - text message to be spoken out by the Echo end_session - flag to determine whether this interaction should end the session card_obj = JSON card object to substitute the card field in the raw_response
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def intent ( self , intent ) : def _handler ( func ) : self . _handlers [ 'IntentRequest' ] [ intent ] = func return func return _handler
Decorator to register intent handler
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def request ( self , request_type ) : def _handler ( func ) : self . _handlers [ request_type ] = func return func return _handler
Decorator to register generic request handler
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def route_request ( self , request_json , metadata = None ) : request = Request ( request_json ) request . metadata = metadata handler_fn = self . _handlers [ self . _default ] if not request . is_intent ( ) and ( request . request_type ( ) in self . _handlers ) : handler_fn = self . _handlers [ request . request_type ...
Route the request object to the right handler function
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def _viewbox_set ( self , viewbox ) : self . _viewbox = viewbox viewbox . events . mouse_press . connect ( self . viewbox_mouse_event ) viewbox . events . mouse_release . connect ( self . viewbox_mouse_event ) viewbox . events . mouse_move . connect ( self . viewbox_mouse_event ) viewbox . events . mouse_wheel . connec...
Friend method of viewbox to register itself .
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def _viewbox_unset ( self , viewbox ) : self . _viewbox = None viewbox . events . mouse_press . disconnect ( self . viewbox_mouse_event ) viewbox . events . mouse_release . disconnect ( self . viewbox_mouse_event ) viewbox . events . mouse_move . disconnect ( self . viewbox_mouse_event ) viewbox . events . mouse_wheel ...
Friend method of viewbox to unregister itself .
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def set_range ( self , x = None , y = None , z = None , margin = 0.05 ) : init = self . _xlim is None bounds = [ None , None , None ] if x is not None : bounds [ 0 ] = float ( x [ 0 ] ) , float ( x [ 1 ] ) if y is not None : bounds [ 1 ] = float ( y [ 0 ] ) , float ( y [ 1 ] ) if z is not None : bounds [ 2 ] = float ( ...
Set the range of the view region for the camera
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def get_state ( self ) : D = { } for key in self . _state_props : D [ key ] = getattr ( self , key ) return D
Get the current view state of the camera
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def set_state ( self , state = None , ** kwargs ) : D = state or { } D . update ( kwargs ) for key , val in D . items ( ) : if key not in self . _state_props : raise KeyError ( 'Not a valid camera state property %r' % key ) setattr ( self , key , val )
Set the view state of the camera
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def link ( self , camera ) : cam1 , cam2 = self , camera while cam1 in cam2 . _linked_cameras : cam2 . _linked_cameras . remove ( cam1 ) while cam2 in cam1 . _linked_cameras : cam1 . _linked_cameras . remove ( cam2 ) cam1 . _linked_cameras . append ( cam2 ) cam2 . _linked_cameras . append ( cam1 )
Link this camera with another camera of the same type
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def view_changed ( self ) : if self . _resetting : return if self . _viewbox : if self . _xlim is None : args = self . _set_range_args or ( ) self . set_range ( * args ) if self . _default_state is None : self . set_default_state ( ) self . _update_transform ( )
Called when this camera is changes its view . Also called when its associated with a viewbox .
3,021
def on_canvas_change ( self , event ) : if event . old is not None : event . old . events . key_press . disconnect ( self . viewbox_key_event ) event . old . events . key_release . disconnect ( self . viewbox_key_event ) if event . new is not None : event . new . events . key_press . connect ( self . viewbox_key_event ...
Canvas change event handler
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def _set_scene_transform ( self , tr ) : pre_tr = self . pre_transform if pre_tr is None : self . _scene_transform = tr else : self . _transform_cache . roll ( ) self . _scene_transform = self . _transform_cache . get ( [ pre_tr , tr ] ) self . _scene_transform . dynamic = True self . _viewbox . scene . transform = sel...
Called by subclasses to configure the viewbox scene transform .
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def _set_config ( c ) : glformat = QGLFormat ( ) glformat . setRedBufferSize ( c [ 'red_size' ] ) glformat . setGreenBufferSize ( c [ 'green_size' ] ) glformat . setBlueBufferSize ( c [ 'blue_size' ] ) glformat . setAlphaBufferSize ( c [ 'alpha_size' ] ) if QT5_NEW_API : glformat . setSwapBehavior ( glformat . DoubleBu...
Set the OpenGL configuration
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def get_window_id ( self ) : winid = self . winId ( ) if IS_RPI : nw = ( ctypes . c_int * 3 ) ( winid , self . width ( ) , self . height ( ) ) return ctypes . pointer ( nw ) elif IS_LINUX : return int ( winid ) ctypes . pythonapi . PyCapsule_GetName . restype = ctypes . c_char_p ctypes . pythonapi . PyCapsule_GetName ....
Get the window id of a PySide Widget . Might also work for PyQt4 .
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def obj ( x ) : x1 = x [ 0 ] x2 = x [ 1 ] f = ( 4 - 2.1 * ( x1 * x1 ) + ( x1 * x1 * x1 * x1 ) / 3.0 ) * ( x1 * x1 ) + x1 * x2 + ( - 4 + 4 * ( x2 * x2 ) ) * ( x2 * x2 ) return f
Six - hump camelback function
3,026
def move ( self , move ) : move = as_vec4 ( move , default = ( 0 , 0 , 0 , 0 ) ) self . translate = self . translate + move
Change the translation of this transform by the amount given .
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def zoom ( self , zoom , center = ( 0 , 0 , 0 ) , mapped = True ) : zoom = as_vec4 ( zoom , default = ( 1 , 1 , 1 , 1 ) ) center = as_vec4 ( center , default = ( 0 , 0 , 0 , 0 ) ) scale = self . scale * zoom if mapped : trans = center - ( center - self . translate ) * zoom else : trans = self . scale * ( 1 - zoom ) * c...
Update the transform such that its scale factor is changed but the specified center point is left unchanged .
3,028
def from_mapping ( cls , x0 , x1 ) : t = cls ( ) t . set_mapping ( x0 , x1 ) return t
Create an STTransform from the given mapping
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def set_mapping ( self , x0 , x1 , update = True ) : if isinstance ( x0 , Rect ) : x0 = x0 . _transform_in ( ) [ : 3 ] if isinstance ( x1 , Rect ) : x1 = x1 . _transform_in ( ) [ : 3 ] x0 = np . asarray ( x0 ) x1 = np . asarray ( x1 ) if ( x0 . ndim != 2 or x0 . shape [ 0 ] != 2 or x1 . ndim != 2 or x1 . shape [ 0 ] !=...
Configure this transform such that it maps points x0 = > x1
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def translate ( self , pos ) : self . matrix = np . dot ( self . matrix , transforms . translate ( pos [ 0 , : 3 ] ) )
Translate the matrix
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def scale ( self , scale , center = None ) : scale = transforms . scale ( as_vec4 ( scale , default = ( 1 , 1 , 1 , 1 ) ) [ 0 , : 3 ] ) if center is not None : center = as_vec4 ( center ) [ 0 , : 3 ] scale = np . dot ( np . dot ( transforms . translate ( - center ) , scale ) , transforms . translate ( center ) ) self ....
Scale the matrix about a given origin .
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def rotate ( self , angle , axis ) : self . matrix = np . dot ( self . matrix , transforms . rotate ( angle , axis ) )
Rotate the matrix by some angle about a given axis .
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def set_mapping ( self , points1 , points2 ) : self . matrix = transforms . affine_map ( points1 , points2 ) . T
Set to a 3D transformation matrix that maps points1 onto points2 .
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def set_ortho ( self , l , r , b , t , n , f ) : self . matrix = transforms . ortho ( l , r , b , t , n , f )
Set ortho transform
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def set_perspective ( self , fov , aspect , near , far ) : self . matrix = transforms . perspective ( fov , aspect , near , far )
Set the perspective
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def set_frustum ( self , l , r , b , t , n , f ) : self . matrix = transforms . frustum ( l , r , b , t , n , f )
Set the frustum
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def set_data ( self , data = None , ** kwargs ) : if data is None : pos = None else : if isinstance ( data , tuple ) : pos = np . array ( data ) . T . astype ( np . float32 ) else : pos = np . atleast_1d ( data ) . astype ( np . float32 ) if pos . ndim == 1 : pos = pos [ : , np . newaxis ] elif pos . ndim > 2 : raise V...
Set the line data
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def curve3_bezier ( p1 , p2 , p3 ) : x1 , y1 = p1 x2 , y2 = p2 x3 , y3 = p3 points = [ ] _curve3_recursive_bezier ( points , x1 , y1 , x2 , y2 , x3 , y3 ) dx , dy = points [ 0 ] [ 0 ] - x1 , points [ 0 ] [ 1 ] - y1 if ( dx * dx + dy * dy ) > 1e-10 : points . insert ( 0 , ( x1 , y1 ) ) dx , dy = points [ - 1 ] [ 0 ] - x...
Generate the vertices for a quadratic Bezier curve .
3,039
def curve4_bezier ( p1 , p2 , p3 , p4 ) : x1 , y1 = p1 x2 , y2 = p2 x3 , y3 = p3 x4 , y4 = p4 points = [ ] _curve4_recursive_bezier ( points , x1 , y1 , x2 , y2 , x3 , y3 , x4 , y4 ) dx , dy = points [ 0 ] [ 0 ] - x1 , points [ 0 ] [ 1 ] - y1 if ( dx * dx + dy * dy ) > 1e-10 : points . insert ( 0 , ( x1 , y1 ) ) dx , d...
Generate the vertices for a third order Bezier curve .
3,040
def render_to_texture ( self , data , texture , offset , size ) : assert isinstance ( texture , Texture2D ) set_state ( blend = False , depth_test = False ) orig_tex = Texture2D ( 255 - data , format = 'luminance' , wrapping = 'clamp_to_edge' , interpolation = 'nearest' ) edf_neg_tex = self . _render_edf ( orig_tex ) o...
Render a SDF to a texture at a given offset and size
3,041
def _render_edf ( self , orig_tex ) : sdf_size = orig_tex . shape [ : 2 ] comp_texs = [ ] for _ in range ( 2 ) : tex = Texture2D ( sdf_size + ( 4 , ) , format = 'rgba' , interpolation = 'nearest' , wrapping = 'clamp_to_edge' ) comp_texs . append ( tex ) self . fbo_to [ 0 ] . color_buffer = comp_texs [ 0 ] self . fbo_to...
Render an EDF to a texture
3,042
def _add_intent_interactive ( self , intent_num = 0 ) : print ( "Name of intent number : " , intent_num ) slot_type_mappings = load_builtin_slots ( ) intent_name = read_from_user ( str ) print ( "How many slots?" ) num_slots = read_from_user ( int ) slot_list = [ ] for i in range ( num_slots ) : print ( "Slot name no."...
Interactively add a new intent to the intent schema object
3,043
def from_filename ( self , filename ) : if os . path . exists ( filename ) : with open ( filename ) as fp : return IntentSchema ( json . load ( fp , object_pairs_hook = OrderedDict ) ) else : print ( 'File does not exist' ) return IntentSchema ( )
Build an IntentSchema from a file path creates a new intent schema if the file does not exist throws an error if the file exists but cannot be loaded as a JSON
3,044
def launch_request_handler ( request ) : user_id = request . access_token ( ) if user_id in twitter_cache . users ( ) : user_cache = twitter_cache . get_user_state ( user_id ) user_cache [ "amzn_id" ] = request . user_id ( ) base_message = "Welcome to Twitter, {} . How may I help you today ?" . format ( user_cache [ "s...
Annotate functions with
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def post_tweet_intent_handler ( request ) : tweet = request . get_slot_value ( "Tweet" ) tweet = tweet if tweet else "" if tweet : user_state = twitter_cache . get_user_state ( request . access_token ( ) ) def action ( ) : return post_tweet ( request . access_token ( ) , tweet ) message = "I am ready to post the tweet,...
Use the intent field in the VoiceHandler to map to the respective intent .
3,046
def tweet_list_handler ( request , tweet_list_builder , msg_prefix = "" ) : tweets = tweet_list_builder ( request . access_token ( ) ) print ( len ( tweets ) , 'tweets found' ) if tweets : twitter_cache . initialize_user_queue ( user_id = request . access_token ( ) , queue = tweets ) text_to_read_out = twitter_cache . ...
This is a generic function to handle any intent that reads out a list of tweets
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def focused_on_tweet ( request ) : slots = request . get_slot_map ( ) if "Index" in slots and slots [ "Index" ] : index = int ( slots [ 'Index' ] ) elif "Ordinal" in slots and slots [ "Index" ] : parse_ordinal = lambda inp : int ( "" . join ( [ l for l in inp if l in string . digits ] ) ) index = parse_ordinal ( slots ...
Return index if focused on tweet False if couldn t
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def next_intent_handler ( request ) : message = "Sorry, couldn't find anything in your next queue" end_session = True if True : user_queue = twitter_cache . user_queue ( request . access_token ( ) ) if not user_queue . is_finished ( ) : message = user_queue . read_out_next ( MAX_RESPONSE_TWEETS ) if not user_queue . is...
Takes care of things whenver the user says next
3,049
def set_data ( self , vertices = None , faces = None , vertex_colors = None , face_colors = None , color = None , meshdata = None ) : if meshdata is not None : self . _meshdata = meshdata else : self . _meshdata = MeshData ( vertices = vertices , faces = faces , vertex_colors = vertex_colors , face_colors = face_colors...
Set the mesh data
3,050
def bounds ( self , axis , view = None ) : if view is None : view = self if axis not in self . _vshare . bounds : self . _vshare . bounds [ axis ] = self . _compute_bounds ( axis , view ) return self . _vshare . bounds [ axis ]
Get the bounds of the Visual
3,051
def _get_hook ( self , shader , name ) : assert name in ( 'pre' , 'post' ) key = ( shader , name ) if key in self . _hooks : return self . _hooks [ key ] hook = StatementList ( ) if shader == 'vert' : self . view_program . vert [ name ] = hook elif shader == 'frag' : self . view_program . frag [ name ] = hook self . _h...
Return a FunctionChain that Filters may use to modify the program .
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def add_subvisual ( self , visual ) : visual . transforms = self . transforms visual . _prepare_transforms ( visual ) self . _subvisuals . append ( visual ) visual . events . update . connect ( self . _subv_update ) self . update ( )
Add a subvisual
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def remove_subvisual ( self , visual ) : visual . events . update . disconnect ( self . _subv_update ) self . _subvisuals . remove ( visual ) self . update ( )
Remove a subvisual
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def draw ( self ) : if not self . visible : return if self . _prepare_draw ( view = self ) is False : return for v in self . _subvisuals : if v . visible : v . draw ( )
Draw the visual
3,055
def checkPos ( self ) : soup = BeautifulSoup ( self . css1 ( path [ 'movs-table' ] ) . html , 'html.parser' ) poss = [ ] for label in soup . find_all ( "tr" ) : pos_id = label [ 'id' ] pos_list = [ x for x in self . positions if x . id == pos_id ] if pos_list : pos = pos_list [ 0 ] pos . update ( label ) else : pos = s...
check all positions
3,056
def checkStock ( self ) : if not self . preferences : logger . debug ( "no preferences" ) return None soup = BeautifulSoup ( self . xpath ( path [ 'stock-table' ] ) [ 0 ] . html , "html.parser" ) count = 0 for product in soup . select ( "div.tradebox" ) : prod_name = product . select ( "span.instrument-name" ) [ 0 ] . ...
check stocks in preference
3,057
def clearPrefs ( self ) : self . preferences . clear ( ) tradebox_num = len ( self . css ( 'div.tradebox' ) ) for i in range ( tradebox_num ) : self . xpath ( path [ 'trade-box' ] ) [ 0 ] . right_click ( ) self . css1 ( 'div.item-trade-contextmenu-list-remove' ) . click ( ) logger . info ( "cleared preferences" )
clear the left panel and preferences
3,058
def addPrefs ( self , prefs = [ ] ) : if len ( prefs ) == len ( self . preferences ) == 0 : logger . debug ( "no preferences" ) return None self . preferences . extend ( prefs ) self . css1 ( path [ 'search-btn' ] ) . click ( ) count = 0 for pref in self . preferences : self . css1 ( path [ 'search-pref' ] ) . fill ( p...
add preference in self . preferences
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def _load_glyph ( f , char , glyphs_dict ) : from . . . ext . freetype import ( FT_LOAD_RENDER , FT_LOAD_NO_HINTING , FT_LOAD_NO_AUTOHINT ) flags = FT_LOAD_RENDER | FT_LOAD_NO_HINTING | FT_LOAD_NO_AUTOHINT face = _load_font ( f [ 'face' ] , f [ 'bold' ] , f [ 'italic' ] ) face . set_char_size ( f [ 'size' ] * 64 ) face...
Load glyph from font into dict
3,060
def _set_clipper ( self , node , clipper ) : if node in self . _clippers : self . detach ( self . _clippers . pop ( node ) ) if clipper is not None : self . attach ( clipper ) self . _clippers [ node ] = clipper
Assign a clipper that is inherited from a parent node .
3,061
def cfnumber_to_number ( cfnumber ) : numeric_type = cf . CFNumberGetType ( cfnumber ) cfnum_to_ctype = { kCFNumberSInt8Type : c_int8 , kCFNumberSInt16Type : c_int16 , kCFNumberSInt32Type : c_int32 , kCFNumberSInt64Type : c_int64 , kCFNumberFloat32Type : c_float , kCFNumberFloat64Type : c_double , kCFNumberCharType : c...
Convert CFNumber to python int or float .
3,062
def cftype_to_value ( cftype ) : if not cftype : return None typeID = cf . CFGetTypeID ( cftype ) if typeID in known_cftypes : convert_function = known_cftypes [ typeID ] return convert_function ( cftype ) else : return cftype
Convert a CFType into an equivalent python type . The convertible CFTypes are taken from the known_cftypes dictionary which may be added to if another library implements its own conversion methods .
3,063
def cfset_to_set ( cfset ) : count = cf . CFSetGetCount ( cfset ) buffer = ( c_void_p * count ) ( ) cf . CFSetGetValues ( cfset , byref ( buffer ) ) return set ( [ cftype_to_value ( c_void_p ( buffer [ i ] ) ) for i in range ( count ) ] )
Convert CFSet to python set .
3,064
def cfarray_to_list ( cfarray ) : count = cf . CFArrayGetCount ( cfarray ) return [ cftype_to_value ( c_void_p ( cf . CFArrayGetValueAtIndex ( cfarray , i ) ) ) for i in range ( count ) ]
Convert CFArray to python list .
3,065
def ctype_for_encoding ( self , encoding ) : if encoding in self . typecodes : return self . typecodes [ encoding ] elif encoding [ 0 : 1 ] == b'^' and encoding [ 1 : ] in self . typecodes : return POINTER ( self . typecodes [ encoding [ 1 : ] ] ) elif encoding [ 0 : 1 ] == b'^' and encoding [ 1 : ] in [ CGImageEncodin...
Return ctypes type for an encoded Objective - C type .
3,066
def classmethod ( self , encoding ) : encoding = ensure_bytes ( encoding ) typecodes = parse_type_encoding ( encoding ) typecodes . insert ( 1 , b'@:' ) encoding = b'' . join ( typecodes ) def decorator ( f ) : def objc_class_method ( objc_cls , objc_cmd , * args ) : py_cls = ObjCClass ( objc_cls ) py_cls . objc_cmd = ...
Function decorator for class methods .
3,067
def get_frag_shader ( volumes , clipped = False , n_volume_max = 5 ) : declarations = "" before_loop = "" in_loop = "" after_loop = "" for index in range ( n_volume_max ) : declarations += "uniform $sampler_type u_volumetex_{0:d};\n" . format ( index ) before_loop += "dummy = $sample(u_volumetex_{0:d}, loc).g;\n" . for...
Get the fragment shader code - we use the shader_program object to determine which layers are enabled and therefore what to include in the shader code .
3,068
def eglGetDisplay ( display = EGL_DEFAULT_DISPLAY ) : res = _lib . eglGetDisplay ( display ) if not res or res == EGL_NO_DISPLAY : raise RuntimeError ( 'Could not create display' ) return res
Connect to the EGL display server .
3,069
def eglInitialize ( display ) : majorVersion = ( _c_int * 1 ) ( ) minorVersion = ( _c_int * 1 ) ( ) res = _lib . eglInitialize ( display , majorVersion , minorVersion ) if res == EGL_FALSE : raise RuntimeError ( 'Could not initialize' ) return majorVersion [ 0 ] , minorVersion [ 0 ]
Initialize EGL and return EGL version tuple .
3,070
def eglQueryString ( display , name ) : out = _lib . eglQueryString ( display , name ) if not out : raise RuntimeError ( 'Could not query %s' % name ) return out
Query string from display
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def set_faces ( self , faces ) : self . _faces = faces self . _edges = None self . _edges_indexed_by_faces = None self . _vertex_faces = None self . _vertices_indexed_by_faces = None self . reset_normals ( ) self . _vertex_colors_indexed_by_faces = None self . _face_colors_indexed_by_faces = None
Set the faces
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def get_vertices ( self , indexed = None ) : if indexed is None : if ( self . _vertices is None and self . _vertices_indexed_by_faces is not None ) : self . _compute_unindexed_vertices ( ) return self . _vertices elif indexed == 'faces' : if ( self . _vertices_indexed_by_faces is None and self . _vertices is not None )...
Get the vertices
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def get_bounds ( self ) : if self . _vertices_indexed_by_faces is not None : v = self . _vertices_indexed_by_faces elif self . _vertices is not None : v = self . _vertices else : return None bounds = [ ( v [ : , ax ] . min ( ) , v [ : , ax ] . max ( ) ) for ax in range ( v . shape [ 1 ] ) ] return bounds
Get the mesh bounds
3,074
def set_vertices ( self , verts = None , indexed = None , reset_normals = True ) : if indexed is None : if verts is not None : self . _vertices = verts self . _vertices_indexed_by_faces = None elif indexed == 'faces' : self . _vertices = None if verts is not None : self . _vertices_indexed_by_faces = verts else : raise...
Set the mesh vertices
3,075
def has_vertex_color ( self ) : for v in ( self . _vertex_colors , self . _vertex_colors_indexed_by_faces , self . _vertex_colors_indexed_by_edges ) : if v is not None : return True return False
Return True if this data set has vertex color information
3,076
def has_face_color ( self ) : for v in ( self . _face_colors , self . _face_colors_indexed_by_faces , self . _face_colors_indexed_by_edges ) : if v is not None : return True return False
Return True if this data set has face color information
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def get_face_normals ( self , indexed = None ) : if self . _face_normals is None : v = self . get_vertices ( indexed = 'faces' ) self . _face_normals = np . cross ( v [ : , 1 ] - v [ : , 0 ] , v [ : , 2 ] - v [ : , 0 ] ) if indexed is None : return self . _face_normals elif indexed == 'faces' : if self . _face_normals_...
Get face normals
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def get_vertex_normals ( self , indexed = None ) : if self . _vertex_normals is None : faceNorms = self . get_face_normals ( ) vertFaces = self . get_vertex_faces ( ) self . _vertex_normals = np . empty ( self . _vertices . shape , dtype = np . float32 ) for vindex in xrange ( self . _vertices . shape [ 0 ] ) : faces =...
Get vertex normals
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def get_vertex_colors ( self , indexed = None ) : if indexed is None : return self . _vertex_colors elif indexed == 'faces' : if self . _vertex_colors_indexed_by_faces is None : self . _vertex_colors_indexed_by_faces = self . _vertex_colors [ self . get_faces ( ) ] return self . _vertex_colors_indexed_by_faces else : r...
Get vertex colors
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def set_vertex_colors ( self , colors , indexed = None ) : colors = _fix_colors ( np . asarray ( colors ) ) if indexed is None : if colors . ndim != 2 : raise ValueError ( 'colors must be 2D if indexed is None' ) if colors . shape [ 0 ] != self . n_vertices : raise ValueError ( 'incorrect number of colors %s, expected ...
Set the vertex color array
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def get_face_colors ( self , indexed = None ) : if indexed is None : return self . _face_colors elif indexed == 'faces' : if ( self . _face_colors_indexed_by_faces is None and self . _face_colors is not None ) : Nf = self . _face_colors . shape [ 0 ] self . _face_colors_indexed_by_faces = np . empty ( ( Nf , 3 , 4 ) , ...
Get the face colors
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def set_face_colors ( self , colors , indexed = None ) : colors = _fix_colors ( colors ) if colors . shape [ 0 ] != self . n_faces : raise ValueError ( 'incorrect number of colors %s, expected %s' % ( colors . shape [ 0 ] , self . n_faces ) ) if indexed is None : if colors . ndim != 2 : raise ValueError ( 'colors must ...
Set the face color array
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def n_faces ( self ) : if self . _faces is not None : return self . _faces . shape [ 0 ] elif self . _vertices_indexed_by_faces is not None : return self . _vertices_indexed_by_faces . shape [ 0 ]
The number of faces in the mesh
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def get_vertex_faces ( self ) : if self . _vertex_faces is None : self . _vertex_faces = [ [ ] for i in xrange ( len ( self . get_vertices ( ) ) ) ] for i in xrange ( self . _faces . shape [ 0 ] ) : face = self . _faces [ i ] for ind in face : self . _vertex_faces [ ind ] . append ( i ) return self . _vertex_faces
List mapping each vertex index to a list of face indices that use it .
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def save ( self ) : import pickle if self . _faces is not None : names = [ '_vertices' , '_faces' ] else : names = [ '_vertices_indexed_by_faces' ] if self . _vertex_colors is not None : names . append ( '_vertex_colors' ) elif self . _vertex_colors_indexed_by_faces is not None : names . append ( '_vertex_colors_indexe...
Serialize this mesh to a string appropriate for disk storage
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def cubehelix ( start = 0.5 , rot = 1 , gamma = 1.0 , reverse = True , nlev = 256. , minSat = 1.2 , maxSat = 1.2 , minLight = 0. , maxLight = 1. , ** kwargs ) : if kwargs is not None : if 'startHue' in kwargs : start = ( kwargs . get ( 'startHue' ) / 360. - 1. ) * 3. if 'endHue' in kwargs : rot = kwargs . get ( 'endHue...
A full implementation of Dave Green s cubehelix for Matplotlib . Based on the FORTRAN 77 code provided in D . A . Green 2011 BASI 39 289 .
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def color_to_hex ( color ) : if color is None or colorConverter . to_rgba ( color ) [ 3 ] == 0 : return 'none' else : rgb = colorConverter . to_rgb ( color ) return '#{0:02X}{1:02X}{2:02X}' . format ( * ( int ( 255 * c ) for c in rgb ) )
Convert matplotlib color code to hex color code
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def _many_to_one ( input_dict ) : return dict ( ( key , val ) for keys , val in input_dict . items ( ) for key in keys )
Convert a many - to - one mapping to a one - to - one mapping
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def get_dasharray ( obj ) : if obj . __dict__ . get ( '_dashSeq' , None ) is not None : return ',' . join ( map ( str , obj . _dashSeq ) ) else : ls = obj . get_linestyle ( ) dasharray = LINESTYLES . get ( ls , 'not found' ) if dasharray == 'not found' : warnings . warn ( "line style '{0}' not understood: " "defaulting...
Get an SVG dash array for the given matplotlib linestyle
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def SVG_path ( path , transform = None , simplify = False ) : if transform is not None : path = path . transformed ( transform ) vc_tuples = [ ( vertices if path_code != Path . CLOSEPOLY else [ ] , PATH_DICT [ path_code ] ) for ( vertices , path_code ) in path . iter_segments ( simplify = simplify ) ] if not vc_tuples ...
Construct the vertices and SVG codes for the path
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def get_path_style ( path , fill = True ) : style = { } style [ 'alpha' ] = path . get_alpha ( ) if style [ 'alpha' ] is None : style [ 'alpha' ] = 1 style [ 'edgecolor' ] = color_to_hex ( path . get_edgecolor ( ) ) if fill : style [ 'facecolor' ] = color_to_hex ( path . get_facecolor ( ) ) else : style [ 'facecolor' ]...
Get the style dictionary for matplotlib path objects
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def get_line_style ( line ) : style = { } style [ 'alpha' ] = line . get_alpha ( ) if style [ 'alpha' ] is None : style [ 'alpha' ] = 1 style [ 'color' ] = color_to_hex ( line . get_color ( ) ) style [ 'linewidth' ] = line . get_linewidth ( ) style [ 'dasharray' ] = get_dasharray ( line ) style [ 'zorder' ] = line . ge...
Get the style dictionary for matplotlib line objects
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def get_marker_style ( line ) : style = { } style [ 'alpha' ] = line . get_alpha ( ) if style [ 'alpha' ] is None : style [ 'alpha' ] = 1 style [ 'facecolor' ] = color_to_hex ( line . get_markerfacecolor ( ) ) style [ 'edgecolor' ] = color_to_hex ( line . get_markeredgecolor ( ) ) style [ 'edgewidth' ] = line . get_mar...
Get the style dictionary for matplotlib marker objects
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def get_text_style ( text ) : style = { } style [ 'alpha' ] = text . get_alpha ( ) if style [ 'alpha' ] is None : style [ 'alpha' ] = 1 style [ 'fontsize' ] = text . get_size ( ) style [ 'color' ] = color_to_hex ( text . get_color ( ) ) style [ 'halign' ] = text . get_horizontalalignment ( ) style [ 'valign' ] = text ....
Return the text style dict for a text instance
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def get_axis_properties ( axis ) : props = { } label1On = axis . _major_tick_kw . get ( 'label1On' , True ) if isinstance ( axis , matplotlib . axis . XAxis ) : if label1On : props [ 'position' ] = "bottom" else : props [ 'position' ] = "top" elif isinstance ( axis , matplotlib . axis . YAxis ) : if label1On : props [ ...
Return the property dictionary for a matplotlib . Axis instance
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def image_to_base64 ( image ) : ax = image . axes binary_buffer = io . BytesIO ( ) lim = ax . axis ( ) ax . axis ( image . get_extent ( ) ) image . write_png ( binary_buffer ) ax . axis ( lim ) binary_buffer . seek ( 0 ) return base64 . b64encode ( binary_buffer . read ( ) ) . decode ( 'utf-8' )
Convert a matplotlib image to a base64 png representation
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def set_interactive ( enabled = True , app = None ) : if enabled : inputhook_manager . enable_gui ( 'vispy' , app ) else : inputhook_manager . disable_gui ( )
Activate the IPython hook for VisPy . If the app is not specified the default is used .
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def _resize_buffers ( self , font_scale ) : new_sizes = ( font_scale , ) + self . size if new_sizes == self . _current_sizes : return self . _n_rows = int ( max ( self . size [ 1 ] / ( self . _char_height * font_scale ) , 1 ) ) self . _n_cols = int ( max ( self . size [ 0 ] / ( self . _char_width * font_scale ) , 1 ) )...
Resize buffers only if necessary
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def clear ( self ) : if hasattr ( self , '_bytes_012' ) : self . _bytes_012 . fill ( 0 ) self . _bytes_345 . fill ( 0 ) self . _text_lines = [ ] * self . _n_rows self . _pending_writes = [ ]
Clear the console