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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# libavg - Media Playback Engine.
# Copyright (C) 2003-2014 Ulrich von Zadow
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# Current versions can be found at www.libavg.de
from libavg import avg, app, player, filter, widget
class LabledSlider(avg.DivNode):
def __init__(self, label, range, formatStr, parent=None, **kwargs):
super(LabledSlider, self).__init__(**kwargs)
self.registerInstance(self, parent)
self.__formatStr = formatStr
fontStyle = widget.Skin.default.fonts["stdFont"]
avg.WordsNode(text=label, fontstyle=fontStyle, color="FFFFFF", parent=self)
self.__slider = widget.Slider(width=300, range=range, pos=(15,20), parent=self)
self.__slider.subscribe(self.__slider.THUMB_POS_CHANGED, self.__onSliderMove)
self.__valueDisplay = avg.WordsNode(pos=(320, 18), fontstyle=fontStyle,
color="FFFFFF", parent=self)
self.__valueDisplay.text = self.__formatStr%self.__slider.thumbPos
self.publish(widget.Slider.THUMB_POS_CHANGED)
def getThumbPos(self):
return self.__slider.thumbPos
thumbPos = property(getThumbPos)
def __onSliderMove(self, thumbPos):
self.notifySubscribers(widget.Slider.THUMB_POS_CHANGED, [thumbPos,])
self.__valueDisplay.text = self.__formatStr%thumbPos
class JitterFilter(app.MainDiv):
def onArgvParsed(self, options, args, parser):
if self.settings.getBoolean("app_fullscreen"):
self.settings.set("app_resolution", "") # use screen resolution
def onInit(self):
self.__minCutoffSlider = LabledSlider(label="Minimum Cutoff", range=(0.3, 8.0),
formatStr="%.1f", pos=(10,10), parent=self)
self.__minCutoffSlider.subscribe(widget.Slider.THUMB_POS_CHANGED,
self.__onSliderMove)
self.__cutoffSlopeSlider = LabledSlider(label="Cutoff Slope", range=(0.0, 0.05),
formatStr="%.3f", pos=(10,50), parent=self)
self.__minCutoffSlider.subscribe(widget.Slider.THUMB_POS_CHANGED,
self.__onSliderMove)
self.__onSliderMove(avg.Point2D(0,0))
self.subscribe(avg.Node.CURSOR_DOWN, self.__onDown)
self.__contact = None
self.__rawContactCircle = avg.CircleNode(r=7*player.getPixelsPerMM(),
color="FF0000", opacity=0, parent=self)
self.__filteredContactCircle = avg.CircleNode(r=7*player.getPixelsPerMM(),
color="00FF00", opacity=0, parent=self)
self.__filters = None
def __onSliderMove(self, pos):
self.__minCutoff = self.__minCutoffSlider.thumbPos
self.__cutoffSlope = self.__cutoffSlopeSlider.thumbPos
def __onDown(self, event):
if self.__contact is None:
self.__contact = event.contact
event.contact.subscribe(avg.Contact.CURSOR_UP, self.__onUp)
self.__rawContactCircle.opacity = 1
self.__filteredContactCircle.opacity = 1
self.__filters = [
filter.OneEuroFilter(self.__minCutoff,self.__cutoffSlope),
filter.OneEuroFilter(self.__minCutoff,self.__cutoffSlope)]
self.__onFrame = player.subscribe(player.ON_FRAME, self.__moveContact)
def __onUp(self, event):
self.__rawContactCircle.opacity = 0
self.__filteredContactCircle.opacity = 0
self.__contact = None
self.__filters = None
player.unsubscribe(self.__onFrame)
def __moveContact(self):
time = player.getFrameTime()
rawPos = self.__contact.events[-1].pos
self.__rawContactCircle.pos = rawPos
filteredPos = avg.Point2D(self.__filters[0].apply(rawPos.x, time),
self.__filters[1].apply(rawPos.y, time))
self.__filteredContactCircle.pos = filteredPos
if __name__ == "__main__":
app.App().run(JitterFilter(),
app_resolution="800x600",
app_show_cursor="true",
multitouch_enabled="true")
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