def __init__(self, element, _pen_x, _pen_y, rX, rY, xRotation, largeArc, sweep, _end_x, _end_y ): """ 3 coordinate systems circular coordinates - in this coordinate system, the elipse is circular and unrotated elements coordinates - circular coordinates * elipse transformation (x*rX and y*Ry, then rotate to generate the elipse) global coordinates - elements coordinates * upper element transformations """ assert not ( _pen_x == _end_x and _pen_y == _end_y ) assert rX <> 0 assert rY <> 0 self._pen_x = _pen_x self._pen_y = _pen_y self._end_x = _end_x self._end_y = _end_y self.scaling = element.scaling2() #scaling between element and global coordinates self.rX = rX #in elements coordinates self.rY = rY #in elements coordinates self.xRotation = xRotation self.largeArc = largeArc self.sweep = sweep #finding center in circular coordinates # X = T_ellipse dot Y # where T_ellipse = [[c -s],[s, c]] dot [[ rX 0],[0 rY]], X is element coordinates, and Y is circular coordinates ##import FreeCAD ##FreeCAD.Console.PrintMessage( 'Xrotation %f\n' % (self.xRotation)) c = cos( xRotation*pi/180) s = sin( xRotation*pi/180) T_ellipse = dot( array([[c,-s] ,[s,c]]), array([[ rX, 0], [0, rY] ])) self.T_ellipse = T_ellipse #FreeCAD.Console.PrintMessage( 'T %s\n' % (T)) x1,y1 = numpy.linalg.solve(T_ellipse, [_pen_x, _pen_y]) x2,y2 = numpy.linalg.solve(T_ellipse, [_end_x, _end_y]) c_x_Y, c_y_Y = findCircularArcCentrePoint( 1, x1, y1, x2, y2, largeArc==1, sweep==1 ) self.center_circular = array([c_x_Y, c_y_Y]) #now determining dtheta in circular coordinates #a,b = 1,1 c = ( ( x2-x1 )**2 + ( y2-y1 )**2 ) ** 0.5 dtheta = arccos2( ( 1 + 1 - c**2 ) / ( 2 ) ) #cos rule #print(x2,x1,y2,y1,c) #print(dtheta) if not dtheta >= 0: raise SvgParseError, "dtheta not >= 0, dtheta %e. locals %s" % (dtheta, locals()) if largeArc: dtheta = 2*pi - dtheta if not sweep: # If sweep-flag is '1', then the arc will be drawn in a "positive-angle" direction dtheta = -dtheta self.dtheta = dtheta self.theta_start = atan2( y1 - c_y_Y, x1 - c_x_Y) self.T_element, self.c_element = element.Transforms() #print(self.valueAt(0), element.applyTransforms(_pen_x, _pen_y)) #print(self.valueAt(1), element.applyTransforms(_end_x, _end_y)) self.startPoint = self.valueAt(0) self.endPoint = self.valueAt(1) self.center = self.applyTransforms( self.center_circular ) self.circular = rX == rY if self.circular: self.r = rX
def generateSelectionGraphicsItems( viewObjects, onClickFun, transform=None, sceneToAddTo=None, clearPreviousSelectionItems=True, doPoints=False, doTextItems=False, doLines=False, doCircles=False, doFittedCircles=False, doPathEndPoints=False, doMidPoints=False, doSelectViewObjectPoints=False, pointWid=1.0 , maskPen=defaultMaskPen , maskBrush=defaultMaskBrush, maskHoverPen=defaultMaskHoverPen ): if clearPreviousSelectionItems: if sceneToAddTo <> None: for gi in sceneToAddTo.items(): if isinstance(gi, CircleSelectionGraphicsItem): sceneToAddTo.removeItem(gi) del graphicItems[:] def postProcessGraphicsItem(gi, elementParms, zValue=0.99): gi.setBrush( maskBrush ) gi.setPen(maskPen) gi.selectionMaskPen = QtGui.QPen(maskPen) gi.selectionMaskHoverPen = QtGui.QPen(maskHoverPen) gi._onClickFun = onClickFun gi.elementParms = elementParms gi.elementXML = element #should be able to get from functions name space gi.elementViewObject = viewObject gi.setAcceptHoverEvents(True) gi.setCursor( QtCore.Qt.CrossCursor ) # http://qt-project.org/doc/qt-5/qt.html#CursorShape-enum ; may not work for lines ... gi.setZValue(zValue) if transform <> None: gi.setTransform( transform ) if sceneToAddTo <> None: sceneToAddTo.addItem(gi) graphicItems.append(gi) pointsAlreadyAdded = [] def addSelectionPoint( x, y, zValue=1.0 ): #common code if [x,y] in pointsAlreadyAdded: return pointsAlreadyAdded.append( [x,y] ) graphicsItem = PointSelectionGraphicsItem( x-pointWid, y-pointWid, 2*pointWid, 2*pointWid ) postProcessGraphicsItem(graphicsItem, {'x':x, 'y':y}, zValue) def addCircle( x, y, r, **extraKWs): graphicsItem = CircleSelectionGraphicsItem( x-r, y-r, 2*r, 2*r ) KWs = {'x':x,'y':y,'r':r} KWs.update(extraKWs) postProcessGraphicsItem(graphicsItem, KWs, zValue=1.01**-r ) #smaller circles on top def circlePoints( x, y, rx, ry ): addSelectionPoint ( x, y, 2 ) #Circle/ellipse center point addSelectionPoint ( x + rx, y, 2 ) #Circle/ellipse right quadrant point addSelectionPoint ( x - rx, y, 2 ) #Circle/ellipse left quadrant point addSelectionPoint ( x , y + ry, 2 ) #Circle/ellipse top quadrant point addSelectionPoint ( x , y - ry, 2 ) #Circle/ellipse bottom quadrant point for viewObject in viewObjects: if viewObject.ViewResult.strip() == '': continue XML_tree = SvgXMLTreeNode(viewObject.ViewResult,0) scaling = XML_tree.scaling() SelectViewObjectPoint_loc = None for element in XML_tree.getAllElements(): if element.tag == 'circle': x, y = element.applyTransforms( float( element.parms['cx'] ), float( element.parms['cy'] ) ) r = float( element.parms['r'] )* scaling if doCircles: addCircle( x, y, r) if doPoints: circlePoints( x, y, r, r) if element.tag == 'ellipse': cx, cy = element.applyTransforms( float( element.parms['cx'] ), float( element.parms['cy'] ) ) rx, ry = float( element.parms['rx'] )* scaling, float( element.parms['ry'] )* scaling if doCircles: if rx == ry: addCircle( cx, cy, rx) if doPoints: circlePoints( cx, cy, rx, ry) if element.tag == 'text' and element.parms.has_key('x'): if doTextItems: addSelectionPoint( *element.applyTransforms( float( element.parms['x'] ), float( element.parms['y'] ) ) ) elif doSelectViewObjectPoints: addSelectionPoint( *element.applyTransforms( float( element.parms['x'] ), float( element.parms['y'] ) ) ) if element.tag == 'path': #https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/d #print(element.XML) fitData = [] dParmsXML = element.parms['d'] #<spacing corrections> i = 0 while i < len(dParmsXML)-1: if dParmsXML[i] in 'MmLlACcQZz,' and dParmsXML[i+1] in '-.0123456789': dParmsXML = dParmsXML[:i+1] + ' ' + dParmsXML[i+1:] i = i + 1 #</spacing corrections> parms = dParmsXML.replace(',',' ').strip().split() _pen_x = 0 _pen_y = 0 j = 0 pathDescriptor = None while j < len(parms): #print(parms[j:]) if parms[j] in list('MmLlACcQZz,'): pathDescriptor = parms[j] else: #using previous pathDescriptor if pathDescriptor == None: raise RuntimeError, 'pathDescriptor == None! unable to parse path "%s" with d parms %s' % (element.XML[element.pStart: element.pEnd], parms) parms.insert(j, pathDescriptor.replace('m','l').replace('M','L')) if parms[j] == 'M' or parms[j] == 'm': if parms[j] == 'M': _pen_x, _pen_y = float(parms[j+1]), float(parms[j+2]) else: _pen_x = _pen_x + float(parms[j+1]) _pen_y = _pen_y + float(parms[j+2]) pen_x, pen_y = element.applyTransforms( _pen_x, _pen_y ) _path_start_x , _path_start_y = _pen_x, _pen_y path_start_x , path_start_y = pen_x, pen_y j = j + 3 elif parms[j] in ['L','l','Z','z']: if parms[j] == 'L' or parms[j] == 'l': if parms[j] == 'L': _end_x, _end_y = float(parms[j+1]), float(parms[j+2]) else: _end_x = _pen_x + float(parms[j+1]) _end_y = _pen_y + float(parms[j+2]) end_x, end_y = element.applyTransforms( _end_x, _end_y ) j = j + 3 else: #parms[j] == 'Z': _end_x, _end_y = _path_start_x , _path_start_y end_x, end_y = path_start_x , path_start_y j = j + 1 if doPoints: addSelectionPoint ( pen_x, pen_y ) addSelectionPoint ( end_x, end_y ) if doLines: graphicsItem = LineSelectionGraphicsItem( pen_x, pen_y, end_x, end_y ) postProcessGraphicsItem(graphicsItem, {'x1':pen_x,'y1':pen_y,'x2':end_x,'y2':end_y}) if doMidPoints: addSelectionPoint( (pen_x+end_x)/2, (pen_y+end_y)/2 ) _pen_x, _pen_y = _end_x, _end_y pen_x, pen_y = end_x, end_y elif parms[j] == 'A': # The arc command begins with the x and y radius and ends with the ending point of the arc. # Between these are three other values: x axis rotation, large arc flag and sweep flag. rX, rY, xRotation, largeArc, sweep, _end_x, _end_y = map( float, parms[j+1:j+1 + 7] ) end_x, end_y = element.applyTransforms( _end_x, _end_y ) if doPoints: addSelectionPoint ( pen_x, pen_y ) addSelectionPoint ( end_x, end_y ) if rX==rY : _c_x, _c_y = findCircularArcCentrePoint( rX, _pen_x, _pen_y, _end_x, _end_y, largeArc==1, sweep==1 ) #do in untranformed co-ordinates as to preserve sweep flag if not numpy.isnan(_c_x): #if all went well findCircularArcCentrePoint c_x, c_y = element.applyTransforms( _c_x, _c_y ) r = rX * scaling if doCircles: #addCircle( c_x, c_y, r , largeArc=largeArc, sweep=sweep) gi = PathSelectionGraphicsItem() path = QtGui.QPainterPath(QtCore.QPointF(pen_x, pen_y)) #path.arcTo(c_x - r, c_y -r , 2*r, 2*r, angle_1, angle_CCW) #dont know what is up with this function so trying something else. for _p in pointsAlongCircularArc(rX, _pen_x, _pen_y, _end_x, _end_y, largeArc==1, sweep==1, noPoints=12): path.lineTo(* element.applyTransforms(*_p) ) gi.setPath(path) postProcessGraphicsItem( gi, {'x':c_x,'y':c_y,'r':r, 'largeArc':largeArc, 'sweep':sweep, } ) #if doPoints: # circlePoints( c_x, c_y, r, r) _pen_x, _pen_y = _end_x, _end_y pen_x, pen_y = end_x, end_y j = j + 8 elif parms[j] == 'C' or parms[j] == 'c' or parms[j] =='Q': #Bézier curve if parms[j] == 'C' or parms[j] == 'c': #cubic Bézier curve from the current point to (x,y) using # (x1,y1) as the control point at the beginning of the curve and (x2,y2) as the control point at the end of the curve. if parms[j] == 'C': _x1, _y1, _x2, _y2, _end_x, _end_y = map( float, parms[j+1:j+1 + 6] ) else: #parms[j] == 'c': _x1, _y1, _x2, _y2, _end_x, _end_y = numpy.array(map( float, parms[j+1:j+1 + 6] )) + numpy.array([_pen_x,_pen_y]*3) P = [ [pen_x, pen_y], element.applyTransforms(_x1, _y1), element.applyTransforms(_x2, _y2), element.applyTransforms(_end_x, _end_y) ] j = j + 7 elif parms[j] == 'Q': # quadratic Bézier curve from the current point to (x,y) using (x1,y1) as the control point. # Q (uppercase) indicates that absolute coordinates will follow; # q (lowercase) indicates that relative coordinates will follow. # Multiple sets of coordinates may be specified to draw a polybézier. # At the end of the command, the new current point becomes the final (x,y) coordinate pair used in the polybézier. _x1, _y1, _end_x, _end_y = map( float, parms[j+1:j+1 + 4] ) j = j + 5 P = [ [pen_x, pen_y], element.applyTransforms(_x1, _y1), element.applyTransforms(_end_x, _end_y) ] if doFittedCircles: x, y, r, r_error = fitCircle_to_path([P]) #print('fittedCircle: x, y, r, r_error', x, y, r, r_error) if r_error < 10**-4: gi = PathSelectionGraphicsItem() path = QtGui.QPainterPath(QtCore.QPointF(pen_x, pen_y)) if len(P) == 4: path.cubicTo( QtCore.QPointF(*P[1]), QtCore.QPointF(*P[2]), QtCore.QPointF(*P[3]) ) else: path.quadTo( QtCore.QPointF(*P[1]), QtCore.QPointF(*P[2]) ) gi.setPath(path) postProcessGraphicsItem( gi, {'x':x,'y':y,'r':r} ) end_x, end_y = P[-1] if doPoints: addSelectionPoint ( pen_x, pen_y ) addSelectionPoint ( end_x, end_y ) #fitData.append( P ) _pen_x, _pen_y = _end_x, _end_y pen_x, pen_y = end_x, end_y else: raise RuntimeError, 'unable to parse path "%s" with d parms %s' % (element.XML[element.pStart: element.pEnd], parms) if j > 0 and doPathEndPoints: addSelectionPoint ( pen_x, pen_y ) if j > 0 and doSelectViewObjectPoints and SelectViewObjectPoint_loc == None: SelectViewObjectPoint_loc = pen_x, pen_y if element.tag == 'line': x1, y1 = element.applyTransforms( float( element.parms['x1'] ), float( element.parms['y1'] ) ) x2, y2 = element.applyTransforms( float( element.parms['x2'] ), float( element.parms['y2'] ) ) if doPoints: addSelectionPoint ( x1, y1 ) addSelectionPoint ( x2, y2 ) if doLines: graphicsItem = LineSelectionGraphicsItem( x1, y1, x2, y2 ) postProcessGraphicsItem(graphicsItem, {'x1':x1,'y1':y1,'x2':x2,'y2':y2}) if doMidPoints: addSelectionPoint( (x1+x2)/2, (y1+y2)/2 ) if doSelectViewObjectPoints and SelectViewObjectPoint_loc == None: #second check to textElementes preference SelectViewObjectPoint_loc = x2,y2 if doSelectViewObjectPoints and SelectViewObjectPoint_loc <> None: addSelectionPoint( *SelectViewObjectPoint_loc ) #if len(fitData) > 0: # x, y, r, r_error = fitCircle_to_path(fitData) # #print('fittedCircle: x, y, r, r_error', x, y, r, r_error) # if r_error < 10**-4: # if doFittedCircles: # addCircle( x, y, r , r_error=r_error ) # if doPoints: # circlePoints( x, y, r, r) return graphicItems
def __init__(self, element, _pen_x, _pen_y, rX, rY, xRotation, largeArc, sweep, _end_x, _end_y): """ 3 coordinate systems circular coordinates - in this coordinate system, the elipse is circular and unrotated elements coordinates - circular coordinates * elipse transformation (x*rX and y*Ry, then rotate to generate the elipse) global coordinates - elements coordinates * upper element transformations """ assert not (_pen_x == _end_x and _pen_y == _end_y) assert rX <> 0 assert rY <> 0 self._pen_x = _pen_x self._pen_y = _pen_y self._end_x = _end_x self._end_y = _end_y self.scaling = element.scaling2( ) #scaling between element and global coordinates self.rX = rX #in elements coordinates self.rY = rY #in elements coordinates self.xRotation = xRotation self.largeArc = largeArc self.sweep = sweep #finding center in circular coordinates # X = T_ellipse dot Y # where T_ellipse = [[c -s],[s, c]] dot [[ rX 0],[0 rY]], X is element coordinates, and Y is circular coordinates ##import FreeCAD ##FreeCAD.Console.PrintMessage( 'Xrotation %f\n' % (self.xRotation)) c = cos(xRotation * pi / 180) s = sin(xRotation * pi / 180) T_ellipse = dot(array([[c, -s], [s, c]]), array([[rX, 0], [0, rY]])) self.T_ellipse = T_ellipse #FreeCAD.Console.PrintMessage( 'T %s\n' % (T)) x1, y1 = numpy.linalg.solve(T_ellipse, [_pen_x, _pen_y]) x2, y2 = numpy.linalg.solve(T_ellipse, [_end_x, _end_y]) c_x_Y, c_y_Y = findCircularArcCentrePoint(1, x1, y1, x2, y2, largeArc == 1, sweep == 1) self.center_circular = array([c_x_Y, c_y_Y]) #now determining dtheta in circular coordinates #a,b = 1,1 c = ((x2 - x1)**2 + (y2 - y1)**2)**0.5 dtheta = arccos2((1 + 1 - c**2) / (2)) #cos rule #print(x2,x1,y2,y1,c) #print(dtheta) if not dtheta >= 0: raise SvgParseError, "dtheta not >= 0, dtheta %e. locals %s" % ( dtheta, locals()) if largeArc: dtheta = 2 * pi - dtheta if not sweep: # If sweep-flag is '1', then the arc will be drawn in a "positive-angle" direction dtheta = -dtheta self.dtheta = dtheta self.theta_start = arctan2(y1 - c_y_Y, x1 - c_x_Y) self.T_element, self.c_element = element.Transforms() #print(self.valueAt(0), element.applyTransforms(_pen_x, _pen_y)) #print(self.valueAt(1), element.applyTransforms(_end_x, _end_y)) self.startPoint = self.valueAt(0) self.endPoint = self.valueAt(1) self.center = self.applyTransforms(self.center_circular) self.circular = rX == rY if self.circular: self.r = rX
def generateSelectionGraphicsItems(viewObjects, onClickFun, transform=None, sceneToAddTo=None, clearPreviousSelectionItems=True, doPoints=False, doTextItems=False, doLines=False, doCircles=False, doFittedCircles=False, doPathEndPoints=False, doMidPoints=False, doSelectViewObjectPoints=True, pointWid=1.0, maskPen=defaultMaskPen, maskBrush=defaultMaskBrush, maskHoverPen=defaultMaskHoverPen): if clearPreviousSelectionItems: if sceneToAddTo <> None: for gi in sceneToAddTo.items(): if isinstance(gi, CircleSelectionGraphicsItem): sceneToAddTo.removeItem(gi) del graphicItems[:] def postProcessGraphicsItem(gi, elementParms, zValue=0.99): gi.setBrush(maskBrush) gi.setPen(maskPen) gi.selectionMaskPen = QtGui.QPen(maskPen) gi.selectionMaskHoverPen = QtGui.QPen(maskHoverPen) gi._onClickFun = onClickFun gi.elementParms = elementParms gi.elementXML = element #should be able to get from functions name space gi.elementViewObject = viewObject gi.setAcceptHoverEvents(True) gi.setCursor( QtCore.Qt.CrossCursor ) # http://qt-project.org/doc/qt-5/qt.html#CursorShape-enum ; may not work for lines ... gi.setZValue(zValue) if transform <> None: gi.setTransform(transform) if sceneToAddTo <> None: sceneToAddTo.addItem(gi) graphicItems.append(gi) pointsAlreadyAdded = [] def addSelectionPoint(x, y, zValue=1.0): #common code if [x, y] in pointsAlreadyAdded: return pointsAlreadyAdded.append([x, y]) graphicsItem = PointSelectionGraphicsItem(x - pointWid, y - pointWid, 2 * pointWid, 2 * pointWid) postProcessGraphicsItem(graphicsItem, {'x': x, 'y': y}, zValue) def addCircle(x, y, r, **extraKWs): graphicsItem = CircleSelectionGraphicsItem(x - r, y - r, 2 * r, 2 * r) KWs = {'x': x, 'y': y, 'r': r} KWs.update(extraKWs) postProcessGraphicsItem(graphicsItem, KWs, zValue=1.01**-r) #smaller circles on top def circlePoints(x, y, r): addSelectionPoint(x, y, 2) #Circle center point addSelectionPoint(x + r, y, 2) #Circle right quadrant point addSelectionPoint(x - r, y, 2) #Circle left quadrant point addSelectionPoint(x, y + r, 2) #Circle top quadrant point addSelectionPoint(x, y - r, 2) #Circle bottom quadrant point for viewObject in viewObjects: if viewObject.ViewResult.strip() == '': continue XML_tree = SvgXMLTreeNode(viewObject.ViewResult, 0) scaling = XML_tree.scaling() SelectViewObjectPoint_loc = None for element in XML_tree.getAllElements(): if element.tag == 'circle': x, y = element.applyTransforms(float(element.parms['cx']), float(element.parms['cy'])) r = float(element.parms['r']) * scaling if doCircles: addCircle(x, y, r) if doPoints: circlePoints(x, y, r) if element.tag == 'text' and element.parms.has_key('x'): if doTextItems: addSelectionPoint(*element.applyTransforms( float(element.parms['x']), float(element.parms['y']))) elif doSelectViewObjectPoints: addSelectionPoint(*element.applyTransforms( float(element.parms['x']), float(element.parms['y']))) if element.tag == 'path': #https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/d #print(element.XML) fitData = [] dParmsXML = element.parms['d'] #<spacing corrections> i = 0 while i < len(dParmsXML) - 1: if dParmsXML[i] in 'MmLlACcQZz,' and dParmsXML[ i + 1] in '-.0123456789': dParmsXML = dParmsXML[:i + 1] + ' ' + dParmsXML[i + 1:] i = i + 1 #</spacing corrections> parms = dParmsXML.replace(',', ' ').strip().split() _pen_x = 0 _pen_y = 0 j = 0 pathDescriptor = None while j < len(parms): #print(parms[j:]) if parms[j] in list('MmLlACcQZz,'): pathDescriptor = parms[j] else: #using previous pathDescriptor if pathDescriptor == None: raise RuntimeError, 'pathDescriptor == None! unable to parse path "%s" with d parms %s' % ( element.XML[element.pStart:element.pEnd], parms) parms.insert( j, pathDescriptor.replace('m', 'l').replace('M', 'L')) if parms[j] == 'M' or parms[j] == 'm': if parms[j] == 'M': _pen_x, _pen_y = float(parms[j + 1]), float( parms[j + 2]) else: _pen_x = _pen_x + float(parms[j + 1]) _pen_y = _pen_y + float(parms[j + 2]) pen_x, pen_y = element.applyTransforms(_pen_x, _pen_y) _path_start_x, _path_start_y = _pen_x, _pen_y path_start_x, path_start_y = pen_x, pen_y j = j + 3 elif parms[j] in ['L', 'l', 'Z', 'z']: if parms[j] == 'L' or parms[j] == 'l': if parms[j] == 'L': _end_x, _end_y = float(parms[j + 1]), float( parms[j + 2]) else: _end_x = _pen_x + float(parms[j + 1]) _end_y = _pen_y + float(parms[j + 2]) end_x, end_y = element.applyTransforms( _end_x, _end_y) j = j + 3 else: #parms[j] == 'Z': _end_x, _end_y = _path_start_x, _path_start_y end_x, end_y = path_start_x, path_start_y j = j + 1 if doPoints: addSelectionPoint(pen_x, pen_y) addSelectionPoint(end_x, end_y) if doLines: graphicsItem = LineSelectionGraphicsItem( pen_x, pen_y, end_x, end_y) postProcessGraphicsItem(graphicsItem, { 'x1': pen_x, 'y1': pen_y, 'x2': end_x, 'y2': end_y }) if doMidPoints: addSelectionPoint((pen_x + end_x) / 2, (pen_y + end_y) / 2) _pen_x, _pen_y = _end_x, _end_y pen_x, pen_y = end_x, end_y elif parms[j] == 'A': # The arc command begins with the x and y radius and ends with the ending point of the arc. # Between these are three other values: x axis rotation, large arc flag and sweep flag. rX, rY, xRotation, largeArc, sweep, _end_x, _end_y = map( float, parms[j + 1:j + 1 + 7]) end_x, end_y = element.applyTransforms(_end_x, _end_y) if doPoints: addSelectionPoint(pen_x, pen_y) addSelectionPoint(end_x, end_y) if rX == rY: _c_x, _c_y = findCircularArcCentrePoint( rX, _pen_x, _pen_y, _end_x, _end_y, largeArc == 1, sweep == 1 ) #do in untranformed co-ordinates as to preserve sweep flag if not numpy.isnan( _c_x ): #if all went well findCircularArcCentrePoint c_x, c_y = element.applyTransforms(_c_x, _c_y) r = rX * scaling if doCircles: #addCircle( c_x, c_y, r , largeArc=largeArc, sweep=sweep) gi = PathSelectionGraphicsItem() path = QtGui.QPainterPath( QtCore.QPointF(pen_x, pen_y)) #path.arcTo(c_x - r, c_y -r , 2*r, 2*r, angle_1, angle_CCW) #dont know what is up with this function so trying something else. for _p in pointsAlongCircularArc( rX, _pen_x, _pen_y, _end_x, _end_y, largeArc == 1, sweep == 1, noPoints=12): path.lineTo(*element.applyTransforms( *_p)) gi.setPath(path) postProcessGraphicsItem( gi, { 'x': c_x, 'y': c_y, 'r': r, 'largeArc': largeArc, 'sweep': sweep, }) #if doPoints: # circlePoints( c_x, c_y, r) _pen_x, _pen_y = _end_x, _end_y pen_x, pen_y = end_x, end_y j = j + 8 elif parms[j] == 'C' or parms[j] == 'c' or parms[ j] == 'Q': #Bézier curve if parms[j] == 'C' or parms[j] == 'c': #cubic Bézier curve from the current point to (x,y) using # (x1,y1) as the control point at the beginning of the curve and (x2,y2) as the control point at the end of the curve. if parms[j] == 'C': _x1, _y1, _x2, _y2, _end_x, _end_y = map( float, parms[j + 1:j + 1 + 6]) else: #parms[j] == 'c': _x1, _y1, _x2, _y2, _end_x, _end_y = numpy.array( map(float, parms[j + 1:j + 1 + 6])) + numpy.array( [_pen_x, _pen_y] * 3) P = [[pen_x, pen_y], element.applyTransforms(_x1, _y1), element.applyTransforms(_x2, _y2), element.applyTransforms(_end_x, _end_y)] j = j + 7 elif parms[ j] == 'Q': # quadratic Bézier curve from the current point to (x,y) using (x1,y1) as the control point. # Q (uppercase) indicates that absolute coordinates will follow; # q (lowercase) indicates that relative coordinates will follow. # Multiple sets of coordinates may be specified to draw a polybézier. # At the end of the command, the new current point becomes the final (x,y) coordinate pair used in the polybézier. _x1, _y1, _end_x, _end_y = map( float, parms[j + 1:j + 1 + 4]) j = j + 5 P = [[pen_x, pen_y], element.applyTransforms(_x1, _y1), element.applyTransforms(_end_x, _end_y)] if doFittedCircles or True: x, y, r, r_error = fitCircle_to_path([P]) #print('fittedCircle: x, y, r, r_error', x, y, r, r_error) if r_error < 10**-4: gi = PathSelectionGraphicsItem() path = QtGui.QPainterPath( QtCore.QPointF(pen_x, pen_y)) if len(P) == 4: path.cubicTo(QtCore.QPointF(*P[1]), QtCore.QPointF(*P[2]), QtCore.QPointF(*P[3])) else: path.quadTo(QtCore.QPointF(*P[1]), QtCore.QPointF(*P[2])) gi.setPath(path) postProcessGraphicsItem( gi, { 'x': x, 'y': y, 'r': r }) end_x, end_y = P[-1] if doPoints: addSelectionPoint(pen_x, pen_y) addSelectionPoint(end_x, end_y) #fitData.append( P ) _pen_x, _pen_y = _end_x, _end_y pen_x, pen_y = end_x, end_y else: raise RuntimeError, 'unable to parse path "%s" with d parms %s' % ( element.XML[element.pStart:element.pEnd], parms) if j > 0 and doPathEndPoints: addSelectionPoint(pen_x, pen_y) if j > 0 and doSelectViewObjectPoints and SelectViewObjectPoint_loc == None: SelectViewObjectPoint_loc = pen_x, pen_y if element.tag == 'line': x1, y1 = element.applyTransforms(float(element.parms['x1']), float(element.parms['y1'])) x2, y2 = element.applyTransforms(float(element.parms['x2']), float(element.parms['y2'])) if doPoints: addSelectionPoint(x1, y1) addSelectionPoint(x2, y2) if doLines: graphicsItem = LineSelectionGraphicsItem(x1, y1, x2, y2) postProcessGraphicsItem(graphicsItem, { 'x1': x1, 'y1': y1, 'x2': x2, 'y2': y2 }) if doMidPoints: addSelectionPoint((x1 + x2) / 2, (y1 + y2) / 2) if doSelectViewObjectPoints and SelectViewObjectPoint_loc == None: #second check to textElementes preference SelectViewObjectPoint_loc = x2, y2 if doSelectViewObjectPoints and SelectViewObjectPoint_loc <> None: addSelectionPoint(*SelectViewObjectPoint_loc) #if len(fitData) > 0: # x, y, r, r_error = fitCircle_to_path(fitData) # #print('fittedCircle: x, y, r, r_error', x, y, r, r_error) # if r_error < 10**-4: # if doFittedCircles: # addCircle( x, y, r , r_error=r_error ) # if doPoints: # circlePoints( x, y, r) return graphicItems