Return a FunctionChain that Filters may use to modify the program. *shader* should be "vert", "geom", or "frag" *name* should be "pre

Mix b (with proportion x) with a.

Update the canvas's TransformSystem to correct for the current canvas size, framebuffer, and viewport.

Create a program and add it to this MultiProgram. It is the caller's responsibility to keep a reference to the returned program.

Attach a Filter to this visual Each filter modifies the appearance or behavior of the visual. Parameters ----------

Connect a function to an event The name of the function should be on_X, with X the name of the event (e.g. 'on_draw'). This

Produce a darker color (if possible) Parameters ---------- dv : float Amount to decrease the color value by.

Return the list of colormap names.

Proxy for context.get_current_canvas to avoud circular import. This function replaces itself with the real function the first time it is calle

Get the object with the given id or None if it does not exist.

Show an image Parameters ---------- data : ndarray Should have shape (N, M), (N, M, 3) or (N, M, 4). cmap

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

Link this camera with another camera of the same type Linked camera's keep each-others' state in sync. Parameters ----------

loadShapeTexture - load 8-bit shape texture data from a TGA file and set up the corresponding texture object.

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

Get maximum value an image array should have for a specific dtype. This is max int for each integer type or 1.0 for floating point types.

Return two lists describing the path from this node to another Parameters ---------- node : instance of Node The

Remove a widget from this grid. Parameters ---------- widget : Widget The Widget to remove

Resize all attached buffers with the given shape Parameters ---------- shape : tuple of two integers New buffer s

Set the data Parameters ---------- adjacency_mat : ndarray | None The adjacency matrix. **kwargs : dict

Convenience function for setting the logging level Parameters ---------- verbose : bool, str, int, or None The verbosity of messa

Set the vertex color array Parameters ---------- colors : array Array of colors. Must have shape (Nv, 4) (indexin

The size of canvas/window.

Factors less than zero zoom in, and greater than zero zoom out. If mouse_coords is given, the point under the mouse stays stationary

Helper to ensure users have OpenGL for 3D texture support (for now)

Determines a textures byte alignment. If the width isn't a power of 2 we need to adjust the byte alignment of the image. The

This method is called whenever the TransformSystem instance is changed for a view. Assign a view's transforms to the proper shader te

Decrement the reference count for *dep*. If the reference count reaches 0, then the dependency is removed and its *changed* event is d

Context manager to store and revert GL state for a list of visuals. Parameters ---------- prev_gl_state : list A list of (Visual,

Create app and canvas so we have a context. Then run tests.

Create app and canvas so we have a context. Then run tests.

Return array of coordinates that can be mapped by Transform classes.

Update vertex buffers & texture

Update, process, and check result

Avoid overhead in calling glUseProgram with same arg. Warning: this will break if glUseProgram is used somewhere else. Per context we

Check docstring, return list of incorrect results.

Create the native application.

Generate vertices & indices for a filled and outlined box. Parameters ---------- width : float Box width. height : float

Get the known color names Returns ------- names : list List of color names known by Vispy.

Get face normals Parameters ---------- indexed : str | None If None, return an array (Nf, 3) of normal vectors fo

Read image data from disk Requires imageio or PIL. Parameters ---------- filename : str Filename to read. format : str |

Link this Varying to another object from which it will derive its dtype. This method is used internally when assigning an attribute t

Load spatial-filters kernel Parameters ---------- packed : bool Whether or not the data should be in "packed" representation

Change the translation of this transform by the amount given. Parameters ---------- move : array-like The values

Return the list of parents starting from this node. The chain ends at the first node with no parents.

Convert pixel coordinates to Mandelbrot set coordinates.

Convert pixel coordinates to Mandelbrot set coordinates.

Preprocess a code by removing comments, version and merging includes.

Read pixels from the currently selected buffer. Under most circumstances, this function reads from the front buffer. Unlike all other functio

Reset the view to the default state.