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diff --git a/content/Informatique/wiimote.rst b/content/Informatique/wiimote.rst deleted file mode 100644 index eb6641d..0000000 --- a/content/Informatique/wiimote.rst +++ /dev/null @@ -1,123 +0,0 @@ -.. -*- mode: rst -*- -.. -*- coding: utf-8 -*- - -Controling the wiimote (I) -########################## - - -:date: 2009-03-11 -:tags: Programmation, Wiimote, Python -:slug: controling-the-wiimote-i -:lang: en - - -Creating the plugin for wminput -------------------------------- - -There are a lot of tutorials about how to configure cwiid. I let you follow -them for getting a functionnal system for your wiimote. You can read the links -at the end of this article. Be sure your system works well before continuing. - -This is a code that we'll use as template for the creation of our driver. Used -as main, it use pygame for displaying the infrared sources the wiimote can -detect, but it is also compatible as plugin for wminput ( even if it does -anything for now ). - -You can get it here : -`wm\_control.py <http://www.chimrod.com/downloads/wiimote/ir_control_0.py>`_ -( This code is licenced under GPL 3+ ) - -About the code : - -.. code-block:: python - - import wmplugin - -This import does not exist, but is created by wminput when executed. It provide -the connexion with the wminput core. Just put ( or link ) the script in the -wminput plugin path ( on my debian this is the /usr/lib/cwiid/plugins/ ) - -.. code-block:: python - - def wmplugin_init(id, wiimote_arg): - wmplugin.set_rpt_mode(id, cwiid.RPT_IR | cwiid.RPT_BTN) - return - - def wmplugin_info(): - return [], - [("X", wmplugin.REL | wmplugin.ABS, 1024, 0, 0, 0), - ("Y", wmplugin.REL | wmplugin.ABS, 768, 0, 0, 0)], - [] - -We instanciate the wiimote object here and configure it in the IR mode. The -name is choosen by wminput if we want to use it as plugin. We define that the -plugin return the coordonates X and Y in a relative system ( -you can get the signification of all the parameters here : `actions list -<http://abstrakraft.org/cwiid/browser/trunk/wminput/action_enum.txt>`_) - -If we want to define new butons, we just have to name them in the first list, -the'll be accessible in the configuration file as plugin.[buton\_name] = ACTION - -.. code-block:: python - - def wmplugin_exec(messages): - '''Wiimote callback managing method - Recieves a message list, each element is different, see the libcwiid docs''' - x = y = 0 - - for msg in messages: - if msg[0] == cwiid.MESG_IR: - x, y = ir_sensor.get_movement(msg) - return [], (x, y) - -Here is the core of our driver. The name is choosen by wminput too, as the -format value we return. We have in parameter the list of the messages the -wiimote has sent. - -If we have defined buton we need to return their state here. It is a boolean -saying if the buton is pressed ( True ) or not ( False ). - -This method doesn't send any others parameters, and this is a problem when we -need to store data between two calls ( ie for saving the cursor position ). One -way for passing throught is to use global variables. But it is unelegant and -can cause problems if we want to use our code in imports. So we'ill use a list -as default parameter and let python save it as you can see here : - -.. code-block:: python - - >>> def meth(a=[]): - ... a.append(1) - ... print a - ... - >>> meth() - [1] - >>> meth() - [1, 1] - >>> meth() - [1, 1, 1] - -So the ir\_sensor.get\_movement method is defined with each parameter we -want to save as an optional list - -.. code-block:: python - - def get_movement(msg, _old_points=[], _old_position = [0, 0]): - return 0, 0 - -The get\_movement method need to return the difference between the old position -of the cursor and the new one in tuple : (0, 0) mean that the cursor didn't -move, (-10, 0) mean a deplacement to the left. - -For now, the plugin doesn't move the cursor, and doesn't read what the wiimote -has sent. But you know everything for creating your own plugin for controlling -your wiimote. You can use all the cwiid method for setting the led, activating -the differents modes of your wiimote ( IR, Acc, rumble ... ), and define here -your own actions. - -I'll explain the core of the movement analysis in IR mode in the next article. - -Links : - `The cwiid project <http://abstrakraft.org/cwiid/>`_ - -`Install Cwiid ( Ubuntu Documentation -) <https://help.ubuntu.com/community/CWiiD>`_ |