Macro View Rotation/es

Esta GUI permite girar la vista con mayor precisión que el ratón. La rotación es de acuerdo a los ejes fijados con respecto al usuario y no los objetos, aunque la intención es que los objetos giren aproximadamente sobre sus centros en lugar del centro de la vista.

La GUI se muestra en la parte superior derecha de la pantalla, este comportamiento se puede modificar editando

a = QtGui.QDesktopWidget()
 right = a.availableGeometry().width()
  
 self.setGeometry(right-300, 0, 300, 150) 

al final de la función 'initUI'. Los dos primeros argumentos (derecha-300, 0) proporcionan la posición de la esquina superior izquierda de la ventana - mi experiencia es que el comportamiento es intencionado en Ubuntu pero Vista posiciona la ventana demasiado alta y el 0 necesita cambiarse a ~30.

Se utilizan tres iconos para representar las direcciones de rotación. Un archivo zip que contiene los tres iconos puede encontrarse aquí, las imágenes deberían estar situadas en la carpeta que contiene las macros. Por favor, eres libre de contribuir con mejoras!

import PySide
from PySide import QtGui, QtCore
from pivy import coin
from math import pi


def find_centre():
xmax = xmin = ymax = ymin = zmax = zmin = 0
for obj in App.ActiveDocument.Objects:
if obj.TypeId[:4] == "Mesh":
box = obj.Mesh.BoundBox
elif obj.TypeId[:6] == "Points":
box = obj.Points.BoundBox
elif obj.TypeId[:4] == "Part":
box = obj.Shape.BoundBox
else:
continue
xmax = max(xmax, box.XMax)
xmin = min(xmin, box.XMin)
ymax = max(ymax, box.YMax)
ymin = min(ymin, box.YMin)
zmax = max(zmax, box.ZMax)
zmin = min(zmin, box.ZMin)

centre = FreeCAD.Vector((xmax+xmin)/2.0, (ymax+ymin)/2.0, (zmax+zmin)/2.0)
return centre



class rotate_gui(QtGui.QWidget):  
def __init__(self):
super(rotate_gui, self).__init__()
self.initUI()
self.initRotate()


def initUI(self):
self.sld = [0,1,2]
self.tbox = [0,1,2]
path = FreeCAD.ConfigGet("UserAppData")
icon = [0,1,2]
icons = ('right.png', 'up.png', 'out.png')

for i in range(3): 
self.sld[i] = QtGui.QSlider(QtCore.Qt.Horizontal, self)
self.sld[i].setFocusPolicy(QtCore.Qt.NoFocus)
self.sld[i].setSingleStep(5)
self.sld[i].setPageStep(15)
self.sld[i].setValue(0)
self.sld[i].setMaximum(180)
self.sld[i].setMinimum(-180)
self.tbox[i] = QtGui.QLineEdit(self)
self.tbox[i].setText("0")
self.tbox[i].setAlignment(QtCore.Qt.AlignRight)
icon[i] = QtGui.QLabel(self)
icon[i].setPixmap(QtGui.QPixmap(path + icons[i]))
self.sld[i].valueChanged[int].connect(self.valueChange)
self.tbox[i].returnPressed.connect(self.valueEntered)

resetButton = QtGui.QPushButton("Reset")
resetButton.clicked.connect(self.reset)

okButton = QtGui.QPushButton("OK")
okButton.clicked.connect(self.close)

cancelButton = QtGui.QPushButton("Cancel")
cancelButton.clicked.connect(self.cancel)

hbox = [0,1,2,3]
vbox = QtGui.QVBoxLayout()

for i in range(3):
hbox[i] = QtGui.QHBoxLayout()
hbox[i].addWidget(icon[i],1, QtCore.Qt.AlignCenter)
hbox[i].addWidget(self.sld[i],4)
hbox[i].addWidget(self.tbox[i],1)
vbox.addLayout(hbox[i])

hbox[3] = QtGui.QHBoxLayout()
hbox[3].addWidget(resetButton,1)
hbox[3].addWidget(okButton,1)
hbox[3].addWidget(cancelButton,1)
vbox.addStretch(1)
vbox.addLayout(hbox[3])

self.setLayout(vbox)

a = QtGui.QDesktopWidget()
right = a.availableGeometry().width()

self.setGeometry(right-300, 0, 300, 150)
self.setWindowTitle('Rotate view...')
self.show()


def initRotate(self):
self.internal = False
self.current = 0

self.cam = Gui.ActiveDocument.ActiveView.getCameraNode()
self.centre = coin.SbVec3f(find_centre())
self.view = self.cam.orientation.getValue()
self.pos = self.cam.position.getValue()

#store a copy of the original view to be restored in the case of user selecting Reset or Cancel
self.original_view = coin.SbRotation(self.view.getValue())
self.original_pos = coin.SbVec3f(self.pos.getValue())

self.config_direction(0)


def reset(self):
#reset the view to the original one
self.cam.orientation = self.original_view
self.cam.position = self.original_pos
self.internal = True
for sld in self.sld:
sld.setValue(0)
self.internal = False
for tbox in self.tbox:
tbox.setText("0")
self.config_direction(0)


def cancel(self):
self.reset()
self.close()


def config_direction(self, i):
#evaluate the vectors corresponding to the three directions for the current view, and assign the i-th one to self.direction
self.view = self.cam.orientation.getValue()
self.view = coin.SbRotation(self.view.getValue())
self.pos = self.cam.position.getValue()
self.pos = coin.SbVec3f(self.pos.getValue())

up = coin.SbVec3f(0,1,0)
self.up = self.view.multVec(up)
out = coin.SbVec3f(0,0,1)
self.out = self.view.multVec(out)
u = self.up.getValue()
o = self.out.getValue()
r = (u[1]*o[2]-u[2]*o[1], u[2]*o[0]-u[0]*o[2], u[0]*o[1]-u[1]*o[0])
self.right = coin.SbVec3f(r)

self.direction = [self.right, self.up, self.out][i]

 def check(self, i):
#check if the direction of rotation has changed, if so then set previous slider & textbox to zero, and setup the new direction
if i <> self.current:
self.internal = True
self.sld[self.current].setValue(0)
self.tbox[self.current].setText("0")
self.internal = False
self.current = i
self.config_direction(i)


def rotate(self, value):
#carry out the desired rotation about self.direction
val = value*pi/180.0
rot = coin.SbRotation(self.direction, -val)
nrot = self.view*rot
prot = rot.multVec(self.pos - self.centre) + self.centre
self.cam.orientation = nrot
self.cam.position = prot


def valueChange(self, value):
#respond to the change in value of a slider, update the corresponding text box, check for a direction change then rotate
#if the value was changed internally, ignore event.
if self.internal:
return

sender = self.sender()
for i in range(3):
if sender == self.sld[i]:
break
self.tbox[i].setText(str(value))
self.check(i)
self.rotate(value)


def valueEntered(self):
#respond to a value being entered in a text box, updating the corresponding slider, check for direction change then rotate
sender = self.sender()
for i in range(3):
if sender == self.tbox[i]:
break
value = int(self.tbox[i].text())
self.internal = True
self.sld[i].setValue(value)
self.internal = False
self.check(i)
self.rotate(value)
 

rotate = rotate_gui() 

Discussion page

View+Rotation