Append a new function to the end of this chain.

Backport

Enter the native GUI event loop. Parameters ---------- allow_interactive : bool Is the application allowed to han

Render the canvas to an offscreen buffer and return the image array. Parameters ---------- alpha : bool If True (

Show or hide the canvas Parameters ---------- visible : bool Make the canvas visible. run : bool

Pop the whole queue (and associated queues) and return a list of commands.

Get a transform from the cache that maps along *path*, which must be a list of Transforms to apply in reverse order (last transform is

Backport

Create a new ViewBox and add it as a child widget. Parameters ---------- row : int The row in which to a

Avoid importing scene until necessary.

Check that an image test result matches a pre-approved standard. If the result does not match, then the user can optionally invoke a GUI to c

Alias for self.events.timeout.connect().

Create an exact copy of this quaternion.

Inform the backend that the Canvas needs to be redrawn Parameters ---------- event : None Not used.

Run tests in a given file if it is run as a script

Add one or more EventEmitter instances to this emitter group. Each keyword argument may be specified as either an EventEmitter instanc

Connect this emitter to a new callback. Parameters ---------- callback : function | tuple *callback* may be eithe

Add a new widget to this grid. This will cause other widgets in the grid to be resized to make room for the new widget. Can be used t

Return a transform mapping between any two coordinate systems. Parameters ---------- map_from : str The starting

Set the OpenGL rendering state, optionally using a preset. Parameters ---------- preset : {'opaque', 'translucent', 'additive

Set the texture size and format Parameters ---------- shape : tuple of integers New texture shape in zyx order. O

Update the Visual

Send a command. See the command spec at: https://github.com/vispy/vispy/wiki/Spec.-GLIR

Define the set of GL state parameters to use when drawing. The arguments are forwarded to :func:`vispy.gloo.wrappers.set_state`. Thi

Set the range of the view region for the camera Parameters ---------- x : tuple | None X range. y : tuple

Buffer dtype

Bind a VertexBuffer that has structured data Parameters ---------- data : VertexBuffer The vertex buffer to bind.

Update simulation

The 4x4 rotation matrix for rotation about a vector. Parameters ---------- angle : float The angle of rotation, in degrees. a

Backport

Set verbatim code replacement It is strongly recommended to use function['$foo'] = 'bar' where possible because template variables ar

Make this the active GL canvas Parameters ---------- event : None Not used.

Extend a ColorArray with new colors Parameters ---------- colors : instance of ColorArray The new colors.

Set data in the buffer (deferred operation). This completely resets the size and contents of the buffer. Parameters --------

Create a new Grid and add it as a child widget. Parameters ---------- row : int The row in which to add

Automatically configure the TransformSystem: * canvas_transform maps from the Canvas logical pixel coordinate system to the framebu

Get a standard vispy demo data file Parameters ---------- fname : str The filename on the remote ``demo-data`` repository to down

Attach this tranform to a canvas

Alias for self.events.timeout.disconnect().

Map coordinates Parameters ---------- coords : array-like Coordinates to map. Returns -------

Process all pending GUI events. If the mainloop is not running, this should be done regularly to keep the visualization interactive an

This classmethod is the entry point for writing mesh data to OBJ. Parameters ---------- fname : string The filena

Set the screen clear color This is a wrapper for gl.glClearColor. Parameters ---------- color : str | tuple | instan

Triangulates the set of vertices and stores the triangles in faces and the convex hull in convex_hull.

Remove a function from the chain.

Compile all code and return a dict {name: code} where the keys are determined by the keyword arguments passed to __init__(). Paramete

Draw the attribute arrays in the specified mode. Parameters ---------- mode : str | GL_ENUM 'points', 'lines', 'l

Returns the exponent of the quaternion. (not tested)

Get the vertices Parameters ---------- indexed : str | None If Note, return an array (N,3) of the positions of ve

Add an item to the list unless it is already present. If the item is an expression, then a semicolon will be appended to it in the fi

Freeze the object so that only existing properties can be set

Create perspective projection matrix Parameters ---------- fovy : float The field of view along the y axis. aspect : float

Translate by an offset (x, y, z) . Parameters ---------- offset : array-like, shape (3,) Translation in x, y, z. dtype : dtyp

Called to inform any listeners that this transform has changed.

Backport

Return the transform that maps from the coordinate system of *self* to the local coordinate system of *node*. Note that ther

Emit an event to inform listeners that properties of this Node have changed. Also request a canvas update.

Insert a new function into the chain at *index*.

Modify the set of GL state parameters to use when drawing. The arguments are forwarded to :func:`vispy.gloo.wrappers.set_state`. Thi

Obtain a colormap by name. Parameters ---------- name : str | Colormap Colormap name. Can also be a Colormap for pass-through.

Entry point for reading OBJ files. Parameters ---------- fname : str The name of the file to read.

The scale of a gesture_zoom event

Return all dependencies required to use this object. The last item in the list is *self*.

Array (Nf, 3) of vertex indices, three per triangular face. If faces have not been computed for this mesh, returns None.

Get/create the default Application object It is safe to call this function multiple times, as long as backend_name is None or matches the alr

Inform dependents that this shaderobject has changed.

Close the context.

The texture format (color channels).

Create a sphere Parameters ---------- rows : int Number of rows (for method='latitude' and 'cube'). cols : int Number

Draw a visual and its children to the canvas or currently active framebuffer. Parameters ---------- visual : Visual

Returns the norm of the quaternion norm = w**2 + x**2 + y**2 + z**2

Stop the timer.