# BufferViewer

from direct.showbase.BufferViewer import BufferViewer

## Inheritance:

BufferViewer: DirectObject
DirectObject:

## Methods of BufferViewer:

__init__
advanceCard
analyzeTextureSet
enable
isEnabled
isValidTextureSet
maintainReadout
makeFrame
refreshReadout
selectCard
setCardSize
setExclude
setInclude
setLayout
setPosition
setSort
toggleEnable

## Methods of DirectObject:

__init__
accept
acceptOnce
classTree
getAllAccepting
ignore
ignoreAll
isAccepting
isIgnoring

__init__ def __init__(self) Access: private. Constructor.

advanceCard def advanceCard(self) Only useful when using setLayout('cycle'). Increments the index that selects which card to display. The index is taken modulo the actual number of cards.

analyzeTextureSet def analyzeTextureSet(self, x, set) Access: private. Converts a list of GraphicsObject, GraphicsEngine, and Texture into a table of Textures.

enable def enable(self, x) Turn the buffer viewer on or off. The initial state of the buffer viewer depends on the Config variable 'show-buffers'.

isEnabled def isEnabled(self) Returns true if the buffer viewer is currently enabled.

isValidTextureSet def isValidTextureSet(self, x) Access: private. Returns true if the parameter is a list of GraphicsOutput and Texture, or the keyword 'all'.

maintainReadout def maintainReadout(self, task) Access: private. Whenever necessary, rebuilds the entire display from scratch. This is only done when the configuration parameters have changed.

makeFrame def makeFrame(self, sizex, sizey) Access: private. Each texture card is displayed with a two-pixel wide frame (a ring of black and a ring of white). This routine builds the frame geometry. It is necessary to be precise so that the frame exactly aligns to pixel boundaries, and so that it doesn't overlap the card at all.

refreshReadout def refreshReadout(self) Force the readout to be refreshed. This is usually invoked by GraphicsOutput::add_render_texture (via an event handler). However, it is also possible to invoke it manually. Currently, the only time I know of that this is necessary is after a window resize (and I ought to fix that).

selectCard def selectCard(self, i) Only useful when using setLayout('cycle'). Sets the index that selects which card to display. The index is taken modulo the actual number of cards.

setCardSize def setCardSize(self, x, y) Set the size of each card. The units are relative to render2d (ie, 1x1 card is not square). If one of the dimensions is zero, then the viewer will choose a value for that dimension so as to ensure that the aspect ratio of the card matches the aspect ratio of the source-window. If both dimensions are zero, the viewer uses a heuristic to choose a reasonable size for the card. The initial value is (0, 0).

setExclude def setExclude(self, x) Set the exclude-set for the buffer viewer. The exclude-set should be a list of GraphicsOutputs and Textures to ignore. The exclude-set is subtracted from the include-set (so the excludes effectively override the includes.) The initial value is the empty list.

setInclude def setInclude(self, x) Set the include-set for the buffer viewer. The include-set specifies which of the render-to-texture targets to display. Valid inputs are the string 'all' (display every render-to-texture target), or a list of GraphicsOutputs or Textures. The initial value is 'all'.

setLayout def setLayout(self, lay) Set the layout of the cards. The valid values are: * vline - display them in a vertical line * hline - display them in a horizontal line * vgrid - display them in a vertical grid * hgrid - display them in a horizontal grid * cycle - display one card at a time, using selectCard/advanceCard The default value is 'hline'.

setPosition def setPosition(self, pos) Set the position of the cards. The valid values are: * llcorner - put them in the lower-left corner of the window * lrcorner - put them in the lower-right corner of the window * ulcorner - put them in the upper-left corner of the window * urcorner - put them in the upper-right corner of the window * window - put them in a separate window The initial value is 'lrcorner'.

setSort def setSort(self, bin, sort) Set the cull-bin and sort-order for the output cards. The default value is 'fixed', 10000.

toggleEnable def toggleEnable(self) Toggle the buffer viewer on or off. The initial state of the enable flag depends on the Config variable 'show-buffers'.

__init__ def __init__(self) Undocumented function.

accept def accept(self, event, method, extraArgs=[]) Undocumented function.

acceptOnce def acceptOnce(self, event, method, extraArgs=[]) Undocumented function.

classTree def classTree(self) Undocumented function.

getAllAccepting def getAllAccepting(self) Undocumented function.

ignore def ignore(self, event) Undocumented function.

ignoreAll def ignoreAll(self) Undocumented function.

isAccepting def isAccepting(self, event) Undocumented function.

isIgnoring def isIgnoring(self, event) Undocumented function.