/usr/share/pyshared/pymecavideo/label_trajectoire.py is in python-mecavideo 6.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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"""
Label_Video, a module for pymecavideo:
a program to track moving points in a video frameset
Copyright (C) 2007 Jean-Baptiste Butet <ashashiwa@gmail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from math import sqrt, atan2, degrees
from vecteur import vecteur
class Label_Trajectoire(QLabel):
def __init__(self, parent, app, origine = vecteur(0,0), referentiel = 0):
QLabel.__init__(self,parent)
self.app=app
self.setGeometry(QRect(0,0,640,480))
self.setCursor(Qt.ArrowCursor)
self.setAutoFillBackground(True)
self.setMouseTracking(1)
self.couleurs=["red", "blue", "cyan", "magenta", "yellow", "gray", "green","red", "blue", "cyan", "magenta", "yellow", "gray", "green"]
self.origine = origine
self.referentiel = referentiel
self.origine_mvt=vecteur(self.geometry().width()/2,self.geometry().height()/2)
self.setMouseTracking(True)
self.speedToDraw = []
self.speedtest = []
self.pos=None
def reDraw(self):
"""call when somthing change as repere, origine ..."""
self.giveCoordonatesToPaint()
self.repaint()
def giveCoordonatesToPaint(self):
#print "recalcul vitesse"
self.speedToDraw = []
if self.app.ui.checkBoxVectorSpeed.isChecked():
#print "état des boutons,vecteur,poitn,partout",self.app.ui.checkBoxVectorSpeed.isChecked(),self.app.ui.radioButtonNearMouse.isChecked(),self.app.ui.radioButtonSpeedEveryWhere.isChecked()
for key in self.app.points.keys() :
points= self.app.points[key]
for i in range(len(points)):
wroteSpeed=False
point=points[i]
if self.referentiel !=0:
ptreferentiel = points[int(self.referentiel)]
try :
ptreferentielAfter = self.app.points[key+1][int(self.referentiel)]
ptreferentielBefore = self.app.points[key-1][int(self.referentiel)]
except KeyError: #last point -> can't compute speed
break
else :
ptreferentiel = vecteur(0,0)
ptreferentielBefore = vecteur(0,0)
ptreferentielAfter = vecteur(0,0)
if type(point)!= type(""):
#self.app.dbg.p(2,"distance between mouse and a point")
if self.app.ui.radioButtonNearMouse.isChecked() and self.pos!=None:
near=20
pos = self.pos
distance = QPoint(point.x()+self.origine.x()-ptreferentiel.x(), point.y()+self.origine.y()-ptreferentiel.y())-pos
if distance.manhattanLength() < near :
self.app.dbg.p(2,"mouse near a point")
wroteSpeed=True
##compute speed
#print "chez souris", wroteSpeed
elif self.app.ui.radioButtonSpeedEveryWhere.isChecked():
wroteSpeed=True
#print "partout", wroteSpeed
if wroteSpeed :
keyMax = len(self.app.points.keys())
if key != 0 and key!=keyMax-1:##first and last point can't have speed.
##coordonnates of n-1 and n+1 point
pointBefore = QPoint(self.app.points[key-1][i].x()+self.origine.x()-ptreferentielBefore.x(), self.app.points[key-1][i].y()+self.origine.y()-ptreferentielBefore.y())
try :
pointAfter = QPoint(self.app.points[key+1][i].x()+self.origine.x()-ptreferentielAfter.x(), self.app.points[key+1][i].y()+self.origine.y()-ptreferentielAfter.y())
vector_speed = pointAfter-pointBefore
#self.speedToDraw = [(QPoint(point.x(),point.y()), vector_speed,i)] #i give the color
#self.speedtest.append((QPoint(point.x()+self.origine.x()-ptreferentiel.x(), point.y()+self.origine.y()-ptreferentiel.y()), vector_speed,i))
self.speedToDraw.append((QPoint(point.x()+self.origine.x()-ptreferentiel.x(), point.y()+self.origine.y()-ptreferentiel.y()), vector_speed,i))
#self.repaint()
except KeyError: #last point -> can't compute speed
pass
def mouseMoveEvent(self, event):
#self.app.traiteSouris(event.pos())
#self.app.dbg.p(2,"in label_trajectoire, mousemoveevent")
#print self.app.points
####Look if mouse is near a point
self.pos = event.pos()
if self.app.ui.radioButtonNearMouse.isChecked():
self.reDraw()
def paintEvent(self,event):
self.painter = QPainter()
self.painter.begin(self)
self.painter.save()
self.painter.fillRect(QRect(0,0,640,480),QColor("grey"))
self.painter.setRenderHint(QPainter.Antialiasing)
############################################################
#paint the origin
self.painter.setPen(Qt.green)
self.painter.drawLine(self.origine_mvt.x()-5, self.origine_mvt.y(), self.origine_mvt.x()+5, self.origine_mvt.y())
self.painter.drawLine(self.origine_mvt.x(), self.origine_mvt.y()-5, self.origine_mvt.x(), self.origine_mvt.y()+5)
self.painter.drawText(self.origine_mvt.x(), self.origine_mvt.y()+15, "O")
self.painter.end()
############################################################
#Paint points
self.painter = QPainter()
self.painter.begin(self)
self.painter.setRenderHint(QPainter.Antialiasing)
for points in self.app.points.values() :
color=0
for point in points:
if self.referentiel !=0:
ptreferentiel = points[int(self.referentiel)]
else :
ptreferentiel = vecteur(0,0)
if type(point)!= type(""):
self.painter.setPen(QColor(self.couleurs[color]))
self.painter.setFont(QFont("", 10))
self.painter.translate(point.x()+self.origine.x()-ptreferentiel.x(), point.y()+self.origine.y()-ptreferentiel.y())
self.painter.drawLine(-2,0,2,0)
self.painter.drawLine(0,-2,0,2)
self.painter.translate(-10, +10)
self.painter.drawText(0,0,str(color+1))
self.painter.translate(-point.x()-self.origine.x()+ptreferentiel.x()+10, -point.y()-10-self.origine.y()+ptreferentiel.y())
color+=1
self.painter.end()
#self.painter.translate(-p.x()-self.origine.x()+ptreferentiel.x(), -p.y()-self.origine.y()+ptreferentiel.y())
############################################################
#paint repere
self.painter = QPainter()
self.painter.begin(self)
self.painter.setRenderHint(QPainter.Antialiasing)
self.painter.setPen(Qt.green)
#self.painter.translate(0,0)
self.painter.translate(self.origine_mvt.x(), self.origine_mvt.y())
p1=QPoint(self.app.sens_X*(-40),0)
p2=QPoint(self.app.sens_X*(40),0)
p3=QPoint(self.app.sens_X*(36),2)
p4=QPoint(self.app.sens_X*(36),-2)
self.painter.scale(1,1)
self.painter.drawPolyline(p1,p2,p3,p4,p2)
self.painter.rotate(self.app.sens_X*self.app.sens_Y*(-90))
self.painter.drawPolyline(p1,p2,p3,p4,p2)
self.painter.rotate(self.app.sens_X*self.app.sens_Y*(90))
self.painter.translate(-self.origine_mvt.x(), -self.origine_mvt.y())
self.painter.end()
############################################################
############################################################
#paint speed vectors if asked
#print self.speedToDraw
if self.speedToDraw!=[]:
for vector in self.speedToDraw:
p, vector_speed,i = vector
if vector_speed!=QPoint():#if speed is not null.
self.painter = QPainter()
self.painter.begin(self)
self.painter.setRenderHint(QPainter.Antialiasing)
self.painter.setPen(QColor(self.couleurs[i-1]))
speed = sqrt(vector_speed.x()**2+vector_speed.y()**2)*float(self.app.echelle_image.mParPx())\
/(2*self.app.deltaT)*float(self.app.ui.checkBoxScale.currentText())
path = QPainterPath()
path.moveTo(0, 0)
path.lineTo(speed, 0)
path.lineTo(QPointF(speed-10,0)+QPointF(0,10))
path.lineTo(speed-8, 0)
path.lineTo(QPointF(speed-10,0)+QPointF(0,-10))
path.lineTo(speed, 0)
angle = atan2(float(vector_speed.y()),float(vector_speed.x()))
self.painter.translate(p.x(), p.y())
self.painter.rotate(degrees(angle))
#self.painter.drawPolyline(p1,p2,p3,p4,p2)
self.painter.drawPath(path)
self.painter.fillPath(path, QColor(self.couleurs[i-1]))#VERIFIER COORDONÉES ICI
path.moveTo(0, 0)
self.painter.end()
else :
pass #null speed
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