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Diffstat (limited to 'src/python/geom.py')
| -rw-r--r-- | src/python/geom.py | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/src/python/geom.py b/src/python/geom.py new file mode 100644 index 0000000..5f6f98c --- /dev/null +++ b/src/python/geom.py @@ -0,0 +1,202 @@ +# 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 + +class RoundedRect(avg.PolygonNode): + def __init__(self, size, radius, pos=(0,0), parent=None, **kwargs): + super(RoundedRect, self).__init__(**kwargs) + self.__pos = avg.Point2D(pos) + self.__size = avg.Point2D(size) + self.__radius = radius + self.__calcPolygon() + self.registerInstance(self, parent) + + def getPos(self): + return self.__pos + + def setPos(self, pos): + self.__pos = avg.Point2D(pos) + self.__calcPolygon() + polyPos = avg.PolygonNode.pos + pos = property(getPos, setPos) + + def getSize(self): + return self.__size + + def setSize(self, size): + self.__size = avg.Point2D(size) + self.__calcPolygon() + size = property(getSize, setSize) + + def getRadius(self): + return self.__radius + + def setRadius(self, radius): + self.__radius = radius + self.__calcPolygon() + radius = property(getRadius, setRadius) + + def __calcPolygon(self): + def calcQuarterCircle(center, r, startAngle): + pos = [] + for i in xrange(int(r)+1): + angle = i*(1.57/r)+startAngle + p = avg.Point2D(center)+avg.Point2D.fromPolar(angle, r) + pos.append(p) + return pos + + r = self.__radius + if self.__size.x < r*2: + r = self.__size.x/2 + if self.__size.y < r*2: + r = self.__size.y/2 + if r == 0: + r = 0.01 + pos = [] + size = self.__size + pos.extend(calcQuarterCircle(self.pos+(size.x-r,r), r, -1.57)) + pos.extend(calcQuarterCircle(self.pos+(size.x-r,size.y-r), r, 0)) + pos.extend(calcQuarterCircle(self.pos+(r,size.y-r), r, 1.57)) + pos.extend(calcQuarterCircle(self.pos+(r,r), r, 3.14)) + self.polyPos = pos + + +class PieSlice(avg.PolygonNode): + def __init__(self, radius, startangle, endangle, pos=(0,0), parent=None, + **kwargs): + super(PieSlice, self).__init__(**kwargs) + self.__pos = avg.Point2D(pos) + self.__radius = radius + self.__startangle = startangle + self.__endangle = endangle + self.__calcPolygon() + self.registerInstance(self, parent) + + def getPos(self): + return self.__pos + + def setPos(self, pos): + self.__pos = avg.Point2D(pos) + self.__calcPolygon() + polyPos = avg.PolygonNode.pos + pos = property(getPos, setPos) + + def getRadius(self): + return self.__radius + + def setRadius(self, radius): + self.__radius = radius + self.__calcPolygon() + radius = property(getRadius, setRadius) + + def getStartAngle(self): + return self.__startangle + + def setStartAngle(self, startangle): + self.__startangle = startangle + self.__calcPolygon() + startangle = property(getStartAngle, setStartAngle) + + def getEndAngle(self): + return self.__endangle + + def setEndAngle(self, endangle): + self.__endangle = endangle + self.__calcPolygon() + endangle = property(getEndAngle, setEndAngle) + + def __calcPolygon(self): + + def getCirclePoint(i): + angle = self.__startangle + (self.__endangle-self.__startangle)*i + return avg.Point2D(self.__pos)+avg.Point2D.fromPolar(angle, self.__radius) + + pos = [] + circlePart = (self.__endangle - self.__startangle)/6.28 + numPoints = self.__radius*2.*circlePart + if numPoints < 4: + numPoints = 4 + for i in xrange(0, int(numPoints)): + pos.append(getCirclePoint(i/numPoints)) + pos.append(getCirclePoint(1)) + pos.append(self.__pos) + self.polyPos = pos + + +class Arc(avg.PolyLineNode): + # TODO: Code duplication with PieSlice + def __init__(self, radius, startangle, endangle, pos=(0,0), parent=None, + **kwargs): + super(Arc, self).__init__(**kwargs) + self.__pos = avg.Point2D(pos) + self.__radius = radius + self.__startangle = startangle + self.__endangle = endangle + self.__calcPolygon() + self.registerInstance(self, parent) + + def getPos(self): + return self.__pos + + def setPos(self, pos): + self.__pos = avg.Point2D(pos) + self.__calcPolygon() + polyPos = avg.PolyLineNode.pos + pos = property(getPos, setPos) + + def getRadius(self): + return self.__radius + + def setRadius(self, radius): + self.__radius = radius + self.__calcPolygon() + radius = property(getRadius, setRadius) + + def getStartAngle(self): + return self.__startangle + + def setStartAngle(self, startangle): + self.__startangle = startangle + self.__calcPolygon() + startangle = property(getStartAngle, setStartAngle) + + def getEndAngle(self): + return self.__endangle + + def setEndAngle(self, endangle): + self.__endangle = endangle + self.__calcPolygon() + endangle = property(getEndAngle, setEndAngle) + + def __calcPolygon(self): + + def getCirclePoint(i): + angle = self.__startangle + (self.__endangle-self.__startangle)*i + return avg.Point2D(self.__pos)+avg.Point2D.fromPolar(angle, self.__radius) + + pos = [] + circlePart = (self.__endangle - self.__startangle)/6.28 + numPoints = self.__radius*2.*circlePart + for i in xrange(0, int(numPoints)): + pos.append(getCirclePoint(i/numPoints)) + pos.append(getCirclePoint(1)) + self.polyPos = pos + |