blender/doc/python_api/examples/bge.texture.py
Quentin Wenger 6ed1a1abe2 BGE: bge.texture API documentation enhancement
This patch attempts to improve and review the documentation of bge.texture, as requested in the [[ http://wiki.blender.org/index.php/Dev:2.5/Source/Development/Todo/GameEngine#Video_Texture | TODO list ]].

More specifically, it

  - fixes the rst syntax, including titles of the examples bge.texture.py and bge.texture.1.py;

  - adds, standardizes and reviews description of the API elements, particularly signatures, types, etc.

  - adds SOURCE_* constants to the doc

  - splits the doc into thematical parts (Video, Image, Texture, and Filter Classes, Functions, Constants).

Notes:

  - The parameter "mode" of ImageBuff.plot has to be described better. Actually, the whole set of IMB_BLEND_* constants (from IMB_imbuf.h) should be exposed to Python. I'll do that in a future diff, and complete the doc at the same moment (adding those IMB_BLEND_* constants to the Constants part of this doc).

  - The option of using webcams in VideoFFmpeg is still particularly not well documented. I am planning to make a proposal about fixing T18634 (and its corresponding TODO in the list) by integrating OpenCV in the BGE (and Blender?). The idea would then probably be to add a new class, f.ex. ImageWebcam, making this functionnality more specialized. So for now I don't think it is worth to document that part much.

This patch fixes T44284 too.

Reviewers: moguri, kupoman, campbellbarton, panzergame, lordloki

Reviewed By: panzergame, lordloki

Subscribers: hg1

Projects: #game_engine, #game_python, #documentation

Maniphest Tasks: T44284

Differential Revision: https://developer.blender.org/D1352
2015-07-06 21:48:25 +02:00

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Python

"""
Basic Video Playback
++++++++++++++++++++
Example of how to replace a texture in game with a video. It needs to run
everyframe.
"""
import bge
from bge import texture
from bge import logic
cont = logic.getCurrentController()
obj = cont.owner
# the creation of the texture must be done once: save the
# texture object in an attribute of bge.logic module makes it persistent
if not hasattr(logic, 'video'):
# identify a static texture by name
matID = texture.materialID(obj, 'IMvideo.png')
# create a dynamic texture that will replace the static texture
logic.video = texture.Texture(obj, matID)
# define a source of image for the texture, here a movie
movie = logic.expandPath('//trailer_400p.ogg')
logic.video.source = texture.VideoFFmpeg(movie)
logic.video.source.scale = True
# quick off the movie, but it wont play in the background
logic.video.source.play()
# you need to call this function every frame to ensure update of the texture.
logic.video.refresh(True)