BoghdadyJR/codesearch_python · Datasets at Hugging Face

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def _get_k_p_a(font, left, right): """This actually calculates the kerning + advance""" # http://lists.apple.com/archives/coretext-dev/2010/Dec/msg00020.html # 1) set up a CTTypesetter chars = left + right args = [None, 1, cf.kCFTypeDictionaryKeyCallBacks, cf.kCFTypeDictionaryValueCallBa...
def set_data(self, xs=None, ys=None, zs=None, colors=None): '''Update the mesh data. Parameters ---------- xs : ndarray \| None A 2d array of x coordinates for the vertices of the mesh. ys : ndarray \| None A 2d array of y coordinates for the vertices of th...
def _make_png(data, level=6): """Convert numpy array to PNG byte array. Parameters ---------- data : numpy.ndarray Data must be (H, W, 3 \| 4) with dtype = np.ubyte (np.uint8) level : int https://docs.python.org/2/library/zlib.html#zlib.compress An integer from 0 to 9 control...
def read_png(filename): """Read a PNG file to RGB8 or RGBA8 Unlike imread, this requires no external dependencies. Parameters ---------- filename : str File to read. Returns ------- data : array Image data. See also -------- write_png, imread, imsave "...
def write_png(filename, data): """Write a PNG file Unlike imsave, this requires no external dependencies. Parameters ---------- filename : str File to save to. data : array Image data. See also -------- read_png, imread, imsave """ data = np.asarray(data) ...
def imread(filename, format=None): """Read image data from disk Requires imageio or PIL. Parameters ---------- filename : str Filename to read. format : str \| None Format of the file. If None, it will be inferred from the filename. Returns ------- data : array ...
def imsave(filename, im, format=None): """Save image data to disk Requires imageio or PIL. Parameters ---------- filename : str Filename to write. im : array Image data. format : str \| None Format of the file. If None, it will be inferred from the filename. See...
def _check_img_lib(): """Utility to search for imageio or PIL""" # Import imageio or PIL imageio = PIL = None try: import imageio except ImportError: try: import PIL.Image except ImportError: pass return imageio, PIL
def read_from_user(input_type, args, kwargs): ''' Helper function to prompt user for input of a specific type e.g. float, str, int Designed to work with both python 2 and 3 Yes I know this is ugly. ''' def _read_in(args, **kwargs): while True: try: tmp = raw_inpu...
def load_builtin_slots(): ''' Helper function to load builtin slots from the data location ''' builtin_slots = {} for index, line in enumerate(open(BUILTIN_SLOTS_LOCATION)): o = line.strip().split('\t') builtin_slots[index] = {'name' : o[0], 'descript...
def timer(logger=None, level=logging.INFO, fmt="function %(function_name)s execution time: %(execution_time).3f", func_or_func_args, *timer_kwargs): """ Function decorator displaying the function execution time All kwargs are the arguments taken by the Timer class constructor. """ ...
def append(self, points, indices, **kwargs): """ Append a new set of vertices to the collection. For kwargs argument, n is the number of vertices (local) or the number of item (shared) Parameters ---------- points : np.array Vertices composing the t...
def _mpl_to_vispy(fig): """Convert a given matplotlib figure to vispy This function is experimental and subject to change! Requires matplotlib and mplexporter. Parameters ---------- fig : instance of matplotlib Figure The populated figure to display. Returns ------- canvas...
def show(block=False): """Show current figures using vispy Parameters ---------- block : bool If True, blocking mode will be used. If False, then non-blocking / interactive mode will be used. Returns ------- canvases : list List of the vispy canvases that were creat...
def _mpl_ax_to(self, mplobj, output='vb'): """Helper to get the parent axes of a given mplobj""" for ax in self._axs.values(): if ax['ax'] is mplobj.axes: return ax[output] raise RuntimeError('Parent axes could not be found!')
def random(adjacency_mat, directed=False, random_state=None): """ Place the graph nodes at random places. Parameters ---------- adjacency_mat : matrix or sparse The graph adjacency matrix directed : bool Whether the graph is directed. If this is True, is will also genera...
def isocurve(data, level, connected=False, extend_to_edge=False): """ Generate isocurve from 2D data using marching squares algorithm. Parameters ---------- data : ndarray 2D numpy array of scalar values level : float The level at which to generate an isosurface connected : ...
def pos(self): """ The position of this event in the local coordinate system of the visual. """ if self._pos is None: tr = self.visual.get_transform('canvas', 'visual') self._pos = tr.map(self.mouse_event.pos) return self._pos
def last_event(self): """ The mouse event immediately prior to this one. This property is None when no mouse buttons are pressed. """ if self.mouse_event.last_event is None: return None ev = self.copy() ev.mouse_event = self.mouse_event.last_event retu...
def press_event(self): """ The mouse press event that initiated a mouse drag, if any. """ if self.mouse_event.press_event is None: return None ev = self.copy() ev.mouse_event = self.mouse_event.press_event return ev
def check_enum(enum, name=None, valid=None): """ Get lowercase string representation of enum. """ name = name or 'enum' # Try to convert res = None if isinstance(enum, int): if hasattr(enum, 'name') and enum.name.startswith('GL_'): res = enum.name[3:].lower() elif isinsta...
def draw_texture(tex): """Draw a 2D texture to the current viewport Parameters ---------- tex : instance of Texture2D The texture to draw. """ from .program import Program program = Program(vert_draw, frag_draw) program['u_texture'] = tex program['a_position'] = [[-1., -1.],...
def _get_dpi_from(cmd, pattern, func): """Match pattern against the output of func, passing the results as floats to func. If anything fails, return None. """ try: out, _ = run_subprocess([cmd]) except (OSError, CalledProcessError): pass else: match = re.search(pattern, ...
def get_dpi(raise_error=True): """Get screen DPI from the OS Parameters ---------- raise_error : bool If True, raise an error if DPI could not be determined. Returns ------- dpi : float Dots per inch of the primary screen. """ # If we are running without an X server...
def set_data(self, adjacency_mat=None, kwargs): """Set the data Parameters ---------- adjacency_mat : ndarray \| None The adjacency matrix. kwargs : dict Keyword arguments to pass to the arrows. """ if adjacency_mat is not None: ...
def calc_size(rect, orientation): """Calculate a size Parameters ---------- rect : rectangle The rectangle. orientation : str Either "bottom" or "top". """ (total_halfx, total_halfy) = rect.center if orientation in ["bottom", "top"...
def dtype_reduce(dtype, level=0, depth=0): """ Try to reduce dtype up to a given level when it is possible dtype = [ ('vertex', [('x', 'f4'), ('y', 'f4'), ('z', 'f4')]), ('normal', [('x', 'f4'), ('y', 'f4'), ('z', 'f4')]), ('color', [('r', 'f4'), ('g', 'f4'), ('b', 'f4'),...
def fetchcode(utype, prefix=""): """ Generate the GLSL code needed to retrieve fake uniform values from a texture. uniforms : sampler2D Texture to fetch uniforms from uniforms_shape: vec3 Size of texture (width,height,count) where count is the number of float to be fetched....
def create_cube(): """ Generate vertices & indices for a filled and outlined cube Returns ------- vertices : array Array of vertices suitable for use as a VertexBuffer. filled : array Indices to use to produce a filled cube. outline : array Indices to use to produce an o...
def create_plane(width=1, height=1, width_segments=1, height_segments=1, direction='+z'): """ Generate vertices & indices for a filled and outlined plane. Parameters ---------- width : float Plane width. height : float Plane height. width_segments : int ...
def create_box(width=1, height=1, depth=1, width_segments=1, height_segments=1, depth_segments=1, planes=None): """ Generate vertices & indices for a filled and outlined box. Parameters ---------- width : float Box width. height : float Box height. depth : float ...
def create_sphere(rows=10, cols=10, depth=10, radius=1.0, offset=True, subdivisions=3, method='latitude'): """Create a sphere Parameters ---------- rows : int Number of rows (for method='latitude' and 'cube'). cols : int Number of columns (for method='latitude' and...
def create_cylinder(rows, cols, radius=[1.0, 1.0], length=1.0, offset=False): """Create a cylinder Parameters ---------- rows : int Number of rows. cols : int Number of columns. radius : tuple of float Cylinder radii. length : float Length of the cylinder. ...
def create_cone(cols, radius=1.0, length=1.0): """Create a cone Parameters ---------- cols : int Number of faces. radius : float Base cone radius. length : float Length of the cone. Returns ------- cone : MeshData Vertices and faces computed for a co...
def create_arrow(rows, cols, radius=0.1, length=1.0, cone_radius=None, cone_length=None): """Create a 3D arrow using a cylinder plus cone Parameters ---------- rows : int Number of rows. cols : int Number of columns. radius : float Base cylinder radius. ...
def create_grid_mesh(xs, ys, zs): '''Generate vertices and indices for an implicitly connected mesh. The intention is that this makes it simple to generate a mesh from meshgrid data. Parameters ---------- xs : ndarray A 2d array of x coordinates for the vertices of the mesh. Must ...
def _straight_line_vertices(adjacency_mat, node_coords, directed=False): """ Generate the vertices for straight lines between nodes. If it is a directed graph, it also generates the vertices which can be passed to an :class:`ArrowVisual`. Parameters ---------- adjacency_mat : array ...
def _rescale_layout(pos, scale=1): """ Normalize the given coordinate list to the range [0, `scale`]. Parameters ---------- pos : array Coordinate list scale : number The upperbound value for the coordinates range Returns ------- pos : array The rescaled (no...
def get_handle(): ''' Get unique FT_Library handle ''' global __handle__ if not __handle__: __handle__ = FT_Library() error = FT_Init_FreeType(byref(__handle__)) if error: raise RuntimeError(hex(error)) return __handle__
def version(): ''' Return the version of the FreeType library being used as a tuple of ( major version number, minor version number, patch version number ) ''' amajor = FT_Int() aminor = FT_Int() apatch = FT_Int() library = get_handle() FT_Library_Version(library, byref(amajor), byre...
def make_camera(cam_type, args, kwargs): """ Factory function for creating new cameras using a string name. Parameters ---------- cam_type : str May be one of: 'panzoom' : Creates :class:`PanZoomCamera` * 'turntable' : Creates :class:`TurntableCamera` *...
def set_data_values(self, label, x, y, z): """ Set the position of the datapoints """ # TODO: avoid re-allocating an array every time self.layers[label]['data'] = np.array([x, y, z]).transpose() self._update()
def SegmentCollection(mode="agg-fast", args, kwargs): """ mode: string - "raw" (speed: fastest, size: small, output: ugly, no dash, no thickness) - "agg" (speed: slower, size: medium, output: perfect, no dash) """ if mode == "raw": return RawSegmentCollection(args...
def surface(func, umin=0, umax=2 * np.pi, ucount=64, urepeat=1.0, vmin=0, vmax=2 * np.pi, vcount=64, vrepeat=1.0): """ Computes the parameterization of a parametric surface func: function(u,v) Parametric function used to build the surface """ vtype = [('position', np.float32, 3...
def PointCollection(mode="raw", args, kwargs): """ mode: string - "raw" (speed: fastest, size: small, output: ugly) - "agg" (speed: fast, size: small, output: beautiful) """ if mode == "raw": return RawPointCollection(args, *kwargs) return AggPointCollection(args,...
def roll_data(self, data): """Append new data to the right side of every line strip and remove as much data from the left. Parameters ---------- data : array-like A data array to append. """ data = data.astype('float32')[..., np.newaxis] ...
def set_data(self, index, data): """Set the complete data for a single line strip. Parameters ---------- index : int The index of the line strip to be replaced. data : array-like The data to assign to the selected line strip. """ s...
def add_program(self, name=None): """Create a program and add it to this MultiProgram. It is the caller's responsibility to keep a reference to the returned program. The name must be unique, but is otherwise arbitrary and used for debugging purposes. ...
def _new_program(self, p): """New program was added to the multiprogram; update items in the shader. """ for k, v in self._set_items.items(): getattr(p, self._shader)[k] = v
def attach(self, canvas): """Attach this tranform to a canvas Parameters ---------- canvas : instance of Canvas The canvas. """ self._canvas = canvas canvas.events.resize.connect(self.on_resize) canvas.events.mouse_wheel.connect(self.on_mouse_...
def on_resize(self, event): """Resize handler Parameters ---------- event : instance of Event The event. """ if self._aspect is None: return w, h = self._canvas.size aspect = self._aspect / (w / h) self.scale = (self.scale[...
def on_mouse_move(self, event): """Mouse move handler Parameters ---------- event : instance of Event The event. """ if event.is_dragging: dxy = event.pos - event.last_event.pos button = event.press_event.button if button ...
def on_mouse_wheel(self, event): """Mouse wheel handler Parameters ---------- event : instance of Event The event. """ self.zoom(np.exp(event.delta * (0.01, -0.01)), event.pos)
def _frenet_frames(points, closed): '''Calculates and returns the tangents, normals and binormals for the tube.''' tangents = np.zeros((len(points), 3)) normals = np.zeros((len(points), 3)) epsilon = 0.0001 # Compute tangent vectors for each segment tangents = np.roll(points, -1, axis=0) -...
def max_order(self): """ Depth of the smallest HEALPix cells found in the MOC instance. """ # TODO: cache value combo = int(0) for iv in self._interval_set._intervals: combo \|= iv[0] \| iv[1] ret = AbstractMOC.HPY_MAX_NORDER - (utils.number_trailing_ze...
def intersection(self, another_moc, *args): """ Intersection between the MOC instance and other MOCs. Parameters ---------- another_moc : `~mocpy.moc.MOC` The MOC used for performing the intersection with self. args : `~mocpy.moc.MOC` Other additi...
def union(self, another_moc, *args): """ Union between the MOC instance and other MOCs. Parameters ---------- another_moc : `~mocpy.moc.MOC` The MOC used for performing the union with self. args : `~mocpy.moc.MOC` Other additional MOCs to perform ...
def difference(self, another_moc, *args): """ Difference between the MOC instance and other MOCs. Parameters ---------- another_moc : `~mocpy.moc.MOC` The MOC used that will be substracted to self. args : `~mocpy.moc.MOC` Other additional MOCs to ...
def _neighbour_pixels(hp, ipix): """ Returns all the pixels neighbours of ``ipix`` """ neigh_ipix = np.unique(hp.neighbours(ipix).ravel()) # Remove negative pixel values returned by `~astropy_healpix.HEALPix.neighbours` return neigh_ipix[np.where(neigh_ipix >= 0)]
def from_cells(cls, cells): """ Creates a MOC from a numpy array representing the HEALPix cells. Parameters ---------- cells : `numpy.ndarray` Must be a numpy structured array (See https://docs.scipy.org/doc/numpy-1.15.0/user/basics.rec.html). The structu...
def from_json(cls, json_moc): """ Creates a MOC from a dictionary of HEALPix cell arrays indexed by their depth. Parameters ---------- json_moc : dict(str : [int] A dictionary of HEALPix cell arrays indexed by their depth. Returns ------- moc...
def _uniq_pixels_iterator(self): """ Generator giving the NUNIQ HEALPix pixels of the MOC. Returns ------- uniq : the NUNIQ HEALPix pixels iterator """ intervals_uniq_l = IntervalSet.to_nuniq_interval_set(self._interval_set)._intervals for uni...
def from_fits(cls, filename): """ Loads a MOC from a FITS file. The specified FITS file must store the MOC (i.e. the list of HEALPix cells it contains) in a binary HDU table. Parameters ---------- filename : str The path to the FITS file. Returns ...
def from_str(cls, value): """ Create a MOC from a str. This grammar is expressed is the `MOC IVOA <http://ivoa.net/documents/MOC/20190215/WD-MOC-1.1-20190215.pdf>`__ specification at section 2.3.2. Parameters ---------- value : str The MOC as...
def _to_json(uniq): """ Serializes a MOC to the JSON format. Parameters ---------- uniq : `~numpy.ndarray` The array of HEALPix cells representing the MOC to serialize. Returns ------- result_json : {str : [int]} A dictionary of H...
def _to_str(uniq): """ Serializes a MOC to the STRING format. HEALPix cells are separated by a comma. The HEALPix cell at order 0 and number 10 is encoded by the string: "0/10", the first digit representing the depth and the second the HEALPix cell number for this depth. HEALPix...
def _to_fits(self, uniq, optional_kw_dict=None): """ Serializes a MOC to the FITS format. Parameters ---------- uniq : `numpy.ndarray` The array of HEALPix cells representing the MOC to serialize. optional_kw_dict : dict Optional keywords argument...
def serialize(self, format='fits', optional_kw_dict=None): """ Serializes the MOC into a specific format. Possible formats are FITS, JSON and STRING Parameters ---------- format : str 'fits' by default. The other possible choice is 'json' or 'str'. o...
def write(self, path, format='fits', overwrite=False, optional_kw_dict=None): """ Writes the MOC to a file. Format can be 'fits' or 'json', though only the fits format is officially supported by the IVOA. Parameters ---------- path : str, optional The path t...
def degrade_to_order(self, new_order): """ Degrades the MOC instance to a new, less precise, MOC. The maximum depth (i.e. the depth of the smallest HEALPix cells that can be found in the MOC) of the degraded MOC is set to ``new_order``. Parameters ---------- ne...
def set_name(self, name): """ Set Screen Name """ self.name = name self.server.request("screen_set %s name %s" % (self.ref, self.name))
def set_width(self, width): """ Set Screen Width """ if width > 0 and width <= self.server.server_info.get("screen_width"): self.width = width self.server.request("screen_set %s wid %i" % (self.ref, self.width))
def set_height(self, height): """ Set Screen Height """ if height > 0 and height <= self.server.server_info.get("screen_height"): self.height = height self.server.request("screen_set %s hgt %i" % (self.ref, self.height))
def set_cursor_x(self, x): """ Set Screen Cursor X Position """ if x >= 0 and x <= self.server.server_info.get("screen_width"): self.cursor_x = x self.server.request("screen_set %s cursor_x %i" % (self.ref, self.cursor_x))
def set_cursor_y(self, y): """ Set Screen Cursor Y Position """ if y >= 0 and y <= self.server.server_info.get("screen_height"): self.cursor_y = y self.server.request("screen_set %s cursor_y %i" % (self.ref, self.cursor_y))
def set_duration(self, duration): """ Set Screen Change Interval Duration """ if duration > 0: self.duration = duration self.server.request("screen_set %s duration %i" % (self.ref, (self.duration * 8)))
def set_timeout(self, timeout): """ Set Screen Timeout Duration """ if timeout > 0: self.timeout = timeout self.server.request("screen_set %s timeout %i" % (self.ref, (self.timeout * 8)))
def set_priority(self, priority): """ Set Screen Priority Class """ if priority in ["hidden", "background", "info", "foreground", "alert", "input"]: self.priority = priority self.server.request("screen_set %s priority %s" % (self.ref, self.priority))
def set_backlight(self, state): """ Set Screen Backlight Mode """ if state in ["on", "off", "toggle", "open", "blink", "flash"]: self.backlight = state self.server.request("screen_set %s backlight %s" % (self.ref, self.backlight))
def set_heartbeat(self, state): """ Set Screen Heartbeat Display Mode """ if state in ["on", "off", "open"]: self.heartbeat = state self.server.request("screen_set %s heartbeat %s" % (self.ref, self.heartbeat))
def set_cursor(self, cursor): """ Set Screen Cursor Mode """ if cursor in ["on", "off", "under", "block"]: self.cursor = cursor self.server.request("screen_set %s cursor %s" % (self.ref, self.cursor))
def clear(self): """ Clear Screen """ widgets.StringWidget(self, ref="_w1_", text=" " * 20, x=1, y=1) widgets.StringWidget(self, ref="_w2_", text=" " * 20, x=1, y=2) widgets.StringWidget(self, ref="_w3_", text=" " * 20, x=1, y=3) widgets.StringWidget(self, ref="_w4_", text=" " * ...
def add_string_widget(self, ref, text="Text", x=1, y=1): """ Add String Widget """ if ref not in self.widgets: widget = widgets.StringWidget(screen=self, ref=ref, text=text, x=x, y=y) self.widgets[ref] = widget return self.widgets[ref]
def add_title_widget(self, ref, text="Title"): """ Add Title Widget """ if ref not in self.widgets: widget = widgets.TitleWidget(screen=self, ref=ref, text=text) self.widgets[ref] = widget return self.widgets[ref]
def add_hbar_widget(self, ref, x=1, y=1, length=10): """ Add Horizontal Bar Widget """ if ref not in self.widgets: widget = widgets.HBarWidget(screen=self, ref=ref, x=x, y=y, length=length) self.widgets[ref] = widget return self.widgets[ref]
def add_vbar_widget(self, ref, x=1, y=1, length=10): """ Add Vertical Bar Widget """ if ref not in self.widgets: widget = widgets.VBarWidget(screen=self, ref=ref, x=x, y=y, length=length) self.widgets[ref] = widget return self.widgets[ref]
def add_frame_widget(self, ref, left=1, top=1, right=20, bottom=1, width=20, height=4, direction="h", speed=1): """ Add Frame Widget """ if ref not in self.widgets: widget = widgets.FrameWidget( screen=self, ref=ref, left=left, top=top, right=right, bottom=bottom, width=widt...
def add_number_widget(self, ref, x=1, value=1): """ Add Number Widget """ if ref not in self.widgets: widget = widgets.NumberWidget(screen=self, ref=ref, x=x, value=value) self.widgets[ref] = widget return self.widgets[ref]
def del_widget(self, ref): """ Delete/Remove A Widget """ self.server.request("widget_del %s %s" % (self.name, ref)) del(self.widgets[ref])
def orbit(self, azim, elev): """ Orbits the camera around the center position. Parameters ---------- azim : float Angle in degrees to rotate horizontally around the center point. elev : float Angle in degrees to rotate vertically around the center point. ...
def _update_rotation(self, event): """Update rotation parmeters based on mouse movement""" p1 = event.mouse_event.press_event.pos p2 = event.mouse_event.pos if self._event_value is None: self._event_value = self.azimuth, self.elevation self.azimuth = self._event_value...
def _rotate_tr(self): """Rotate the transformation matrix based on camera parameters""" up, forward, right = self._get_dim_vectors() self.transform.rotate(self.elevation, -right) self.transform.rotate(self.azimuth, up)
def _dist_to_trans(self, dist): """Convert mouse x, y movement into x, y, z translations""" rae = np.array([self.roll, self.azimuth, self.elevation]) * np.pi / 180 sro, saz, sel = np.sin(rae) cro, caz, cel = np.cos(rae) dx = (+ dist[0] * (cro * caz + sro * sel * saz) ...
def _set_config(c): """Set gl configuration for GLFW """ glfw.glfwWindowHint(glfw.GLFW_RED_BITS, c['red_size']) glfw.glfwWindowHint(glfw.GLFW_GREEN_BITS, c['green_size']) glfw.glfwWindowHint(glfw.GLFW_BLUE_BITS, c['blue_size']) glfw.glfwWindowHint(glfw.GLFW_ALPHA_BITS, c['alpha_size']) glfw.glf...
def _process_mod(self, key, down): """Process (possible) keyboard modifiers GLFW provides "mod" with many callbacks, but not (critically) the scroll callback, so we keep track on our own here. """ if key in MOD_KEYS: if down: if key not in self._mod: ...
def _patch(): """ Monkey-patch pyopengl to fix a bug in glBufferSubData. """ import sys from OpenGL import GL if sys.version_info > (3,): buffersubdatafunc = GL.glBufferSubData if hasattr(buffersubdatafunc, 'wrapperFunction'): buffersubdatafunc = buffersubdatafunc.wrapperFunc...
def _get_function_from_pyopengl(funcname): """ Try getting the given function from PyOpenGL, return a dummy function (that shows a warning when called) if it could not be found. """ func = None # Get function from GL try: func = getattr(_GL, funcname) except AttributeError: ...
def _inject(): """ Copy functions from OpenGL.GL into _pyopengl namespace. """ NS = _pyopengl2.__dict__ for glname, ourname in _pyopengl2._functions_to_import: func = _get_function_from_pyopengl(glname) NS[ourname] = func
def _get_vispy_font_filename(face, bold, italic): """Fetch a remote vispy font""" 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)
def _check_color_dim(val): """Ensure val is Nx(n_col), usually Nx3""" val = np.atleast_2d(val) if val.shape[1] not in (3, 4): raise RuntimeError('Value must have second dimension of size 3 or 4') return val, val.shape[1]

def _get_k_p_a(font, left, right): """This actually calculates the kerning + advance""" # http://lists.apple.com/archives/coretext-dev/2010/Dec/msg00020.html # 1) set up a CTTypesetter chars = left + right args = [None, 1, cf.kCFTypeDictionaryKeyCallBacks, cf.kCFTypeDictionaryValueCallBa...

def set_data(self, xs=None, ys=None, zs=None, colors=None): '''Update the mesh data. Parameters ---------- xs : ndarray | None A 2d array of x coordinates for the vertices of the mesh. ys : ndarray | None A 2d array of y coordinates for the vertices of th...

def _make_png(data, level=6): """Convert numpy array to PNG byte array. Parameters ---------- data : numpy.ndarray Data must be (H, W, 3 | 4) with dtype = np.ubyte (np.uint8) level : int https://docs.python.org/2/library/zlib.html#zlib.compress An integer from 0 to 9 control...

def read_png(filename): """Read a PNG file to RGB8 or RGBA8 Unlike imread, this requires no external dependencies. Parameters ---------- filename : str File to read. Returns ------- data : array Image data. See also -------- write_png, imread, imsave "...

def write_png(filename, data): """Write a PNG file Unlike imsave, this requires no external dependencies. Parameters ---------- filename : str File to save to. data : array Image data. See also -------- read_png, imread, imsave """ data = np.asarray(data) ...

def imread(filename, format=None): """Read image data from disk Requires imageio or PIL. Parameters ---------- filename : str Filename to read. format : str | None Format of the file. If None, it will be inferred from the filename. Returns ------- data : array ...

def imsave(filename, im, format=None): """Save image data to disk Requires imageio or PIL. Parameters ---------- filename : str Filename to write. im : array Image data. format : str | None Format of the file. If None, it will be inferred from the filename. See...

def _check_img_lib(): """Utility to search for imageio or PIL""" # Import imageio or PIL imageio = PIL = None try: import imageio except ImportError: try: import PIL.Image except ImportError: pass return imageio, PIL

def read_from_user(input_type, *args, **kwargs): ''' Helper function to prompt user for input of a specific type e.g. float, str, int Designed to work with both python 2 and 3 Yes I know this is ugly. ''' def _read_in(*args, **kwargs): while True: try: tmp = raw_inpu...

def load_builtin_slots(): ''' Helper function to load builtin slots from the data location ''' builtin_slots = {} for index, line in enumerate(open(BUILTIN_SLOTS_LOCATION)): o = line.strip().split('\t') builtin_slots[index] = {'name' : o[0], 'descript...

def timer(logger=None, level=logging.INFO, fmt="function %(function_name)s execution time: %(execution_time).3f", *func_or_func_args, **timer_kwargs): """ Function decorator displaying the function execution time All kwargs are the arguments taken by the Timer class constructor. """ ...

def append(self, points, indices, **kwargs): """ Append a new set of vertices to the collection. For kwargs argument, n is the number of vertices (local) or the number of item (shared) Parameters ---------- points : np.array Vertices composing the t...

def _mpl_to_vispy(fig): """Convert a given matplotlib figure to vispy This function is experimental and subject to change! Requires matplotlib and mplexporter. Parameters ---------- fig : instance of matplotlib Figure The populated figure to display. Returns ------- canvas...

def show(block=False): """Show current figures using vispy Parameters ---------- block : bool If True, blocking mode will be used. If False, then non-blocking / interactive mode will be used. Returns ------- canvases : list List of the vispy canvases that were creat...

def _mpl_ax_to(self, mplobj, output='vb'): """Helper to get the parent axes of a given mplobj""" for ax in self._axs.values(): if ax['ax'] is mplobj.axes: return ax[output] raise RuntimeError('Parent axes could not be found!')

def random(adjacency_mat, directed=False, random_state=None): """ Place the graph nodes at random places. Parameters ---------- adjacency_mat : matrix or sparse The graph adjacency matrix directed : bool Whether the graph is directed. If this is True, is will also genera...

def isocurve(data, level, connected=False, extend_to_edge=False): """ Generate isocurve from 2D data using marching squares algorithm. Parameters ---------- data : ndarray 2D numpy array of scalar values level : float The level at which to generate an isosurface connected : ...

def pos(self): """ The position of this event in the local coordinate system of the visual. """ if self._pos is None: tr = self.visual.get_transform('canvas', 'visual') self._pos = tr.map(self.mouse_event.pos) return self._pos

def last_event(self): """ The mouse event immediately prior to this one. This property is None when no mouse buttons are pressed. """ if self.mouse_event.last_event is None: return None ev = self.copy() ev.mouse_event = self.mouse_event.last_event retu...

def press_event(self): """ The mouse press event that initiated a mouse drag, if any. """ if self.mouse_event.press_event is None: return None ev = self.copy() ev.mouse_event = self.mouse_event.press_event return ev

def check_enum(enum, name=None, valid=None): """ Get lowercase string representation of enum. """ name = name or 'enum' # Try to convert res = None if isinstance(enum, int): if hasattr(enum, 'name') and enum.name.startswith('GL_'): res = enum.name[3:].lower() elif isinsta...

def draw_texture(tex): """Draw a 2D texture to the current viewport Parameters ---------- tex : instance of Texture2D The texture to draw. """ from .program import Program program = Program(vert_draw, frag_draw) program['u_texture'] = tex program['a_position'] = [[-1., -1.],...

def _get_dpi_from(cmd, pattern, func): """Match pattern against the output of func, passing the results as floats to func. If anything fails, return None. """ try: out, _ = run_subprocess([cmd]) except (OSError, CalledProcessError): pass else: match = re.search(pattern, ...

def get_dpi(raise_error=True): """Get screen DPI from the OS Parameters ---------- raise_error : bool If True, raise an error if DPI could not be determined. Returns ------- dpi : float Dots per inch of the primary screen. """ # If we are running without an X server...

def set_data(self, adjacency_mat=None, **kwargs): """Set the data Parameters ---------- adjacency_mat : ndarray | None The adjacency matrix. **kwargs : dict Keyword arguments to pass to the arrows. """ if adjacency_mat is not None: ...

def calc_size(rect, orientation): """Calculate a size Parameters ---------- rect : rectangle The rectangle. orientation : str Either "bottom" or "top". """ (total_halfx, total_halfy) = rect.center if orientation in ["bottom", "top"...

def dtype_reduce(dtype, level=0, depth=0): """ Try to reduce dtype up to a given level when it is possible dtype = [ ('vertex', [('x', 'f4'), ('y', 'f4'), ('z', 'f4')]), ('normal', [('x', 'f4'), ('y', 'f4'), ('z', 'f4')]), ('color', [('r', 'f4'), ('g', 'f4'), ('b', 'f4'),...

def fetchcode(utype, prefix=""): """ Generate the GLSL code needed to retrieve fake uniform values from a texture. uniforms : sampler2D Texture to fetch uniforms from uniforms_shape: vec3 Size of texture (width,height,count) where count is the number of float to be fetched....

def create_cube(): """ Generate vertices & indices for a filled and outlined cube Returns ------- vertices : array Array of vertices suitable for use as a VertexBuffer. filled : array Indices to use to produce a filled cube. outline : array Indices to use to produce an o...

def create_plane(width=1, height=1, width_segments=1, height_segments=1, direction='+z'): """ Generate vertices & indices for a filled and outlined plane. Parameters ---------- width : float Plane width. height : float Plane height. width_segments : int ...

def create_box(width=1, height=1, depth=1, width_segments=1, height_segments=1, depth_segments=1, planes=None): """ Generate vertices & indices for a filled and outlined box. Parameters ---------- width : float Box width. height : float Box height. depth : float ...

def create_sphere(rows=10, cols=10, depth=10, radius=1.0, offset=True, subdivisions=3, method='latitude'): """Create a sphere Parameters ---------- rows : int Number of rows (for method='latitude' and 'cube'). cols : int Number of columns (for method='latitude' and...

def create_cylinder(rows, cols, radius=[1.0, 1.0], length=1.0, offset=False): """Create a cylinder Parameters ---------- rows : int Number of rows. cols : int Number of columns. radius : tuple of float Cylinder radii. length : float Length of the cylinder. ...

def create_cone(cols, radius=1.0, length=1.0): """Create a cone Parameters ---------- cols : int Number of faces. radius : float Base cone radius. length : float Length of the cone. Returns ------- cone : MeshData Vertices and faces computed for a co...

def create_arrow(rows, cols, radius=0.1, length=1.0, cone_radius=None, cone_length=None): """Create a 3D arrow using a cylinder plus cone Parameters ---------- rows : int Number of rows. cols : int Number of columns. radius : float Base cylinder radius. ...

def create_grid_mesh(xs, ys, zs): '''Generate vertices and indices for an implicitly connected mesh. The intention is that this makes it simple to generate a mesh from meshgrid data. Parameters ---------- xs : ndarray A 2d array of x coordinates for the vertices of the mesh. Must ...

def _straight_line_vertices(adjacency_mat, node_coords, directed=False): """ Generate the vertices for straight lines between nodes. If it is a directed graph, it also generates the vertices which can be passed to an :class:`ArrowVisual`. Parameters ---------- adjacency_mat : array ...

def _rescale_layout(pos, scale=1): """ Normalize the given coordinate list to the range [0, `scale`]. Parameters ---------- pos : array Coordinate list scale : number The upperbound value for the coordinates range Returns ------- pos : array The rescaled (no...

def get_handle(): ''' Get unique FT_Library handle ''' global __handle__ if not __handle__: __handle__ = FT_Library() error = FT_Init_FreeType(byref(__handle__)) if error: raise RuntimeError(hex(error)) return __handle__

def version(): ''' Return the version of the FreeType library being used as a tuple of ( major version number, minor version number, patch version number ) ''' amajor = FT_Int() aminor = FT_Int() apatch = FT_Int() library = get_handle() FT_Library_Version(library, byref(amajor), byre...

def make_camera(cam_type, *args, **kwargs): """ Factory function for creating new cameras using a string name. Parameters ---------- cam_type : str May be one of: * 'panzoom' : Creates :class:`PanZoomCamera` * 'turntable' : Creates :class:`TurntableCamera` *...

def set_data_values(self, label, x, y, z): """ Set the position of the datapoints """ # TODO: avoid re-allocating an array every time self.layers[label]['data'] = np.array([x, y, z]).transpose() self._update()

def SegmentCollection(mode="agg-fast", *args, **kwargs): """ mode: string - "raw" (speed: fastest, size: small, output: ugly, no dash, no thickness) - "agg" (speed: slower, size: medium, output: perfect, no dash) """ if mode == "raw": return RawSegmentCollection(*args...

def surface(func, umin=0, umax=2 * np.pi, ucount=64, urepeat=1.0, vmin=0, vmax=2 * np.pi, vcount=64, vrepeat=1.0): """ Computes the parameterization of a parametric surface func: function(u,v) Parametric function used to build the surface """ vtype = [('position', np.float32, 3...

def PointCollection(mode="raw", *args, **kwargs): """ mode: string - "raw" (speed: fastest, size: small, output: ugly) - "agg" (speed: fast, size: small, output: beautiful) """ if mode == "raw": return RawPointCollection(*args, **kwargs) return AggPointCollection(*args,...

def roll_data(self, data): """Append new data to the right side of every line strip and remove as much data from the left. Parameters ---------- data : array-like A data array to append. """ data = data.astype('float32')[..., np.newaxis] ...

def set_data(self, index, data): """Set the complete data for a single line strip. Parameters ---------- index : int The index of the line strip to be replaced. data : array-like The data to assign to the selected line strip. """ s...

def add_program(self, name=None): """Create a program and add it to this MultiProgram. It is the caller's responsibility to keep a reference to the returned program. The *name* must be unique, but is otherwise arbitrary and used for debugging purposes. ...

def _new_program(self, p): """New program was added to the multiprogram; update items in the shader. """ for k, v in self._set_items.items(): getattr(p, self._shader)[k] = v

def attach(self, canvas): """Attach this tranform to a canvas Parameters ---------- canvas : instance of Canvas The canvas. """ self._canvas = canvas canvas.events.resize.connect(self.on_resize) canvas.events.mouse_wheel.connect(self.on_mouse_...

def on_resize(self, event): """Resize handler Parameters ---------- event : instance of Event The event. """ if self._aspect is None: return w, h = self._canvas.size aspect = self._aspect / (w / h) self.scale = (self.scale[...

def on_mouse_move(self, event): """Mouse move handler Parameters ---------- event : instance of Event The event. """ if event.is_dragging: dxy = event.pos - event.last_event.pos button = event.press_event.button if button ...

def on_mouse_wheel(self, event): """Mouse wheel handler Parameters ---------- event : instance of Event The event. """ self.zoom(np.exp(event.delta * (0.01, -0.01)), event.pos)

def _frenet_frames(points, closed): '''Calculates and returns the tangents, normals and binormals for the tube.''' tangents = np.zeros((len(points), 3)) normals = np.zeros((len(points), 3)) epsilon = 0.0001 # Compute tangent vectors for each segment tangents = np.roll(points, -1, axis=0) -...

def max_order(self): """ Depth of the smallest HEALPix cells found in the MOC instance. """ # TODO: cache value combo = int(0) for iv in self._interval_set._intervals: combo |= iv[0] | iv[1] ret = AbstractMOC.HPY_MAX_NORDER - (utils.number_trailing_ze...

def intersection(self, another_moc, *args): """ Intersection between the MOC instance and other MOCs. Parameters ---------- another_moc : `~mocpy.moc.MOC` The MOC used for performing the intersection with self. args : `~mocpy.moc.MOC` Other additi...

def union(self, another_moc, *args): """ Union between the MOC instance and other MOCs. Parameters ---------- another_moc : `~mocpy.moc.MOC` The MOC used for performing the union with self. args : `~mocpy.moc.MOC` Other additional MOCs to perform ...

def difference(self, another_moc, *args): """ Difference between the MOC instance and other MOCs. Parameters ---------- another_moc : `~mocpy.moc.MOC` The MOC used that will be substracted to self. args : `~mocpy.moc.MOC` Other additional MOCs to ...

def _neighbour_pixels(hp, ipix): """ Returns all the pixels neighbours of ``ipix`` """ neigh_ipix = np.unique(hp.neighbours(ipix).ravel()) # Remove negative pixel values returned by `~astropy_healpix.HEALPix.neighbours` return neigh_ipix[np.where(neigh_ipix >= 0)]

def from_cells(cls, cells): """ Creates a MOC from a numpy array representing the HEALPix cells. Parameters ---------- cells : `numpy.ndarray` Must be a numpy structured array (See https://docs.scipy.org/doc/numpy-1.15.0/user/basics.rec.html). The structu...

def from_json(cls, json_moc): """ Creates a MOC from a dictionary of HEALPix cell arrays indexed by their depth. Parameters ---------- json_moc : dict(str : [int] A dictionary of HEALPix cell arrays indexed by their depth. Returns ------- moc...

def _uniq_pixels_iterator(self): """ Generator giving the NUNIQ HEALPix pixels of the MOC. Returns ------- uniq : the NUNIQ HEALPix pixels iterator """ intervals_uniq_l = IntervalSet.to_nuniq_interval_set(self._interval_set)._intervals for uni...

def from_fits(cls, filename): """ Loads a MOC from a FITS file. The specified FITS file must store the MOC (i.e. the list of HEALPix cells it contains) in a binary HDU table. Parameters ---------- filename : str The path to the FITS file. Returns ...

def from_str(cls, value): """ Create a MOC from a str. This grammar is expressed is the `MOC IVOA <http://ivoa.net/documents/MOC/20190215/WD-MOC-1.1-20190215.pdf>`__ specification at section 2.3.2. Parameters ---------- value : str The MOC as...

def _to_json(uniq): """ Serializes a MOC to the JSON format. Parameters ---------- uniq : `~numpy.ndarray` The array of HEALPix cells representing the MOC to serialize. Returns ------- result_json : {str : [int]} A dictionary of H...

def _to_str(uniq): """ Serializes a MOC to the STRING format. HEALPix cells are separated by a comma. The HEALPix cell at order 0 and number 10 is encoded by the string: "0/10", the first digit representing the depth and the second the HEALPix cell number for this depth. HEALPix...

def _to_fits(self, uniq, optional_kw_dict=None): """ Serializes a MOC to the FITS format. Parameters ---------- uniq : `numpy.ndarray` The array of HEALPix cells representing the MOC to serialize. optional_kw_dict : dict Optional keywords argument...

def serialize(self, format='fits', optional_kw_dict=None): """ Serializes the MOC into a specific format. Possible formats are FITS, JSON and STRING Parameters ---------- format : str 'fits' by default. The other possible choice is 'json' or 'str'. o...

def write(self, path, format='fits', overwrite=False, optional_kw_dict=None): """ Writes the MOC to a file. Format can be 'fits' or 'json', though only the fits format is officially supported by the IVOA. Parameters ---------- path : str, optional The path t...

def degrade_to_order(self, new_order): """ Degrades the MOC instance to a new, less precise, MOC. The maximum depth (i.e. the depth of the smallest HEALPix cells that can be found in the MOC) of the degraded MOC is set to ``new_order``. Parameters ---------- ne...

def set_name(self, name): """ Set Screen Name """ self.name = name self.server.request("screen_set %s name %s" % (self.ref, self.name))

def set_width(self, width): """ Set Screen Width """ if width > 0 and width <= self.server.server_info.get("screen_width"): self.width = width self.server.request("screen_set %s wid %i" % (self.ref, self.width))

def set_height(self, height): """ Set Screen Height """ if height > 0 and height <= self.server.server_info.get("screen_height"): self.height = height self.server.request("screen_set %s hgt %i" % (self.ref, self.height))

def set_cursor_x(self, x): """ Set Screen Cursor X Position """ if x >= 0 and x <= self.server.server_info.get("screen_width"): self.cursor_x = x self.server.request("screen_set %s cursor_x %i" % (self.ref, self.cursor_x))

def set_cursor_y(self, y): """ Set Screen Cursor Y Position """ if y >= 0 and y <= self.server.server_info.get("screen_height"): self.cursor_y = y self.server.request("screen_set %s cursor_y %i" % (self.ref, self.cursor_y))

def set_duration(self, duration): """ Set Screen Change Interval Duration """ if duration > 0: self.duration = duration self.server.request("screen_set %s duration %i" % (self.ref, (self.duration * 8)))

def set_timeout(self, timeout): """ Set Screen Timeout Duration """ if timeout > 0: self.timeout = timeout self.server.request("screen_set %s timeout %i" % (self.ref, (self.timeout * 8)))

def set_priority(self, priority): """ Set Screen Priority Class """ if priority in ["hidden", "background", "info", "foreground", "alert", "input"]: self.priority = priority self.server.request("screen_set %s priority %s" % (self.ref, self.priority))

def set_backlight(self, state): """ Set Screen Backlight Mode """ if state in ["on", "off", "toggle", "open", "blink", "flash"]: self.backlight = state self.server.request("screen_set %s backlight %s" % (self.ref, self.backlight))

def set_heartbeat(self, state): """ Set Screen Heartbeat Display Mode """ if state in ["on", "off", "open"]: self.heartbeat = state self.server.request("screen_set %s heartbeat %s" % (self.ref, self.heartbeat))

def set_cursor(self, cursor): """ Set Screen Cursor Mode """ if cursor in ["on", "off", "under", "block"]: self.cursor = cursor self.server.request("screen_set %s cursor %s" % (self.ref, self.cursor))

def clear(self): """ Clear Screen """ widgets.StringWidget(self, ref="_w1_", text=" " * 20, x=1, y=1) widgets.StringWidget(self, ref="_w2_", text=" " * 20, x=1, y=2) widgets.StringWidget(self, ref="_w3_", text=" " * 20, x=1, y=3) widgets.StringWidget(self, ref="_w4_", text=" " * ...

def add_string_widget(self, ref, text="Text", x=1, y=1): """ Add String Widget """ if ref not in self.widgets: widget = widgets.StringWidget(screen=self, ref=ref, text=text, x=x, y=y) self.widgets[ref] = widget return self.widgets[ref]

def add_title_widget(self, ref, text="Title"): """ Add Title Widget """ if ref not in self.widgets: widget = widgets.TitleWidget(screen=self, ref=ref, text=text) self.widgets[ref] = widget return self.widgets[ref]

def add_hbar_widget(self, ref, x=1, y=1, length=10): """ Add Horizontal Bar Widget """ if ref not in self.widgets: widget = widgets.HBarWidget(screen=self, ref=ref, x=x, y=y, length=length) self.widgets[ref] = widget return self.widgets[ref]

def add_vbar_widget(self, ref, x=1, y=1, length=10): """ Add Vertical Bar Widget """ if ref not in self.widgets: widget = widgets.VBarWidget(screen=self, ref=ref, x=x, y=y, length=length) self.widgets[ref] = widget return self.widgets[ref]

def add_frame_widget(self, ref, left=1, top=1, right=20, bottom=1, width=20, height=4, direction="h", speed=1): """ Add Frame Widget """ if ref not in self.widgets: widget = widgets.FrameWidget( screen=self, ref=ref, left=left, top=top, right=right, bottom=bottom, width=widt...

def add_number_widget(self, ref, x=1, value=1): """ Add Number Widget """ if ref not in self.widgets: widget = widgets.NumberWidget(screen=self, ref=ref, x=x, value=value) self.widgets[ref] = widget return self.widgets[ref]

def del_widget(self, ref): """ Delete/Remove A Widget """ self.server.request("widget_del %s %s" % (self.name, ref)) del(self.widgets[ref])

def orbit(self, azim, elev): """ Orbits the camera around the center position. Parameters ---------- azim : float Angle in degrees to rotate horizontally around the center point. elev : float Angle in degrees to rotate vertically around the center point. ...

def _update_rotation(self, event): """Update rotation parmeters based on mouse movement""" p1 = event.mouse_event.press_event.pos p2 = event.mouse_event.pos if self._event_value is None: self._event_value = self.azimuth, self.elevation self.azimuth = self._event_value...

def _rotate_tr(self): """Rotate the transformation matrix based on camera parameters""" up, forward, right = self._get_dim_vectors() self.transform.rotate(self.elevation, -right) self.transform.rotate(self.azimuth, up)

def _dist_to_trans(self, dist): """Convert mouse x, y movement into x, y, z translations""" rae = np.array([self.roll, self.azimuth, self.elevation]) * np.pi / 180 sro, saz, sel = np.sin(rae) cro, caz, cel = np.cos(rae) dx = (+ dist[0] * (cro * caz + sro * sel * saz) ...

def _set_config(c): """Set gl configuration for GLFW """ glfw.glfwWindowHint(glfw.GLFW_RED_BITS, c['red_size']) glfw.glfwWindowHint(glfw.GLFW_GREEN_BITS, c['green_size']) glfw.glfwWindowHint(glfw.GLFW_BLUE_BITS, c['blue_size']) glfw.glfwWindowHint(glfw.GLFW_ALPHA_BITS, c['alpha_size']) glfw.glf...

def _process_mod(self, key, down): """Process (possible) keyboard modifiers GLFW provides "mod" with many callbacks, but not (critically) the scroll callback, so we keep track on our own here. """ if key in MOD_KEYS: if down: if key not in self._mod: ...

def _patch(): """ Monkey-patch pyopengl to fix a bug in glBufferSubData. """ import sys from OpenGL import GL if sys.version_info > (3,): buffersubdatafunc = GL.glBufferSubData if hasattr(buffersubdatafunc, 'wrapperFunction'): buffersubdatafunc = buffersubdatafunc.wrapperFunc...

def _get_function_from_pyopengl(funcname): """ Try getting the given function from PyOpenGL, return a dummy function (that shows a warning when called) if it could not be found. """ func = None # Get function from GL try: func = getattr(_GL, funcname) except AttributeError: ...

def _inject(): """ Copy functions from OpenGL.GL into _pyopengl namespace. """ NS = _pyopengl2.__dict__ for glname, ourname in _pyopengl2._functions_to_import: func = _get_function_from_pyopengl(glname) NS[ourname] = func

def _get_vispy_font_filename(face, bold, italic): """Fetch a remote vispy font""" 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)

def _check_color_dim(val): """Ensure val is Nx(n_col), usually Nx3""" val = np.atleast_2d(val) if val.shape[1] not in (3, 4): raise RuntimeError('Value must have second dimension of size 3 or 4') return val, val.shape[1]