def add_child(self, dispatcher):
try:
assert dispatcher.dispatcher_id not in self._children_dispatchers
except AssertionError:
debuginfo((dispatcher.dispatcher_id, list(self._children_dispatchers.keys())))
raise
self._children_dispatchers[dispatcher.dispatcher_id] = dispatcher
dispatcher.set_parent(self)
def __init__(self, action_data):
self.main_data = self.main_data
try:
assert isinstance(action_data, self.ActionDataCls)
except AssertionError:
debuginfo(action_data.__class__.__name__, action_data, self.ActionDataCls)
raise
self.action_data = action_data
self.is_valid = True
def box_frustum_volume(frustum):
""":type frustum: vtk.vtkPlanes"""
points_ = frustum.GetPoints()
normals_ = frustum.GetNormals()
assert points_.GetNumberOfPoints() == 6
points = []
normals = []
for i in range(6):
points.append(np.array(points_.GetPoint(i), dtype=np.float64))
normals.append(np.array(normals_.GetTuple3(i), dtype=np.float64))
used = []
pairs = []
count = 0
while count < 3:
for i in range(6):
if i in used:
continue
for j in range(6):
if i == j or j in used:
continue
if round(abs(np.dot(normals[i], normals[j])), 3) == 1.:
pairs.append((i, j))
used.append(i)
used.append(j)
count += 1
dimensions = [0, 0, 0]
for i in range(3):
pair = pairs[i]
i1 = pair[0]
i2 = pair[1]
d = points[i1] - points[i2]
dimensions[i] = np.dot(d, normals[i1])
debuginfo(dimensions)
volume = dimensions[0] * dimensions[1] * dimensions[2]
debuginfo('volume = ', volume)
return volume
def _make_connection(action):
obj_signal = getattr(obj, action)
if not isinstance(obj_signal, MrSignal):
debuginfo(obj_signal)
raise TypeError("Not a Signal!!!")
action_name = "%s.%s" % (obj_name, action)
def _connection(*args):
return self.dispatch((action_name, args))
_connection.__name__ = "%s_%s" % (obj_name, action)
obj_signal.connect(_connection)
setattr(obj, _connection.__name__, _connection)
def create_triangle_frustum(wp1, wp2, wp3, renderer):
camera = renderer.GetActiveCamera()
renderer.SetWorldPoint(wp1[0], wp1[1], wp1[2], 1)
renderer.WorldToDisplay()
dp1 = renderer.GetDisplayPoint()
renderer.SetWorldPoint(wp2[0], wp2[1], wp2[2], 1)
renderer.WorldToDisplay()
dp2 = renderer.GetDisplayPoint()
renderer.SetWorldPoint(wp3[0], wp3[1], wp3[2], 1)
renderer.WorldToDisplay()
dp3 = renderer.GetDisplayPoint()
renderer.SetDisplayPoint(dp1[0], dp1[1], 0)
renderer.DisplayToWorld()
wp1 = renderer.GetWorldPoint()[:4]
renderer.SetDisplayPoint(dp2[0], dp2[1], 0)
renderer.DisplayToWorld()
wp2 = renderer.GetWorldPoint()[:4]
renderer.SetDisplayPoint(dp3[0], dp3[1], 0)
renderer.DisplayToWorld()
wp3 = renderer.GetWorldPoint()[:4]
renderer.SetDisplayPoint(dp1[0], dp1[1], 1)
renderer.DisplayToWorld()
wp1_ = renderer.GetWorldPoint()[:4]
renderer.SetDisplayPoint(dp2[0], dp2[1], 1)
renderer.DisplayToWorld()
wp2_ = renderer.GetWorldPoint()[:4]
renderer.SetDisplayPoint(dp3[0], dp3[1], 1)
renderer.DisplayToWorld()
wp3_ = renderer.GetWorldPoint()[:4]
normals = vtk.vtkFloatArray()
normals.SetNumberOfComponents(3)
normals.SetNumberOfTuples(6)
points = vtk.vtkPoints()
points.SetNumberOfPoints(6)
dp1 = [dp1[0], dp1[1], 0]
dp2 = [dp2[0], dp2[1], 0]
dp3 = [dp3[0], dp3[1], 0]
check = calculate_normal_from_points(dp1, dp2, dp3)
debuginfo(check)
if check[2] < 0:
tmp = wp3
wp3 = wp2
wp2 = tmp
tmp = wp3_
wp3_ = wp2_
wp2_ = tmp
normal1 = calculate_normal_from_points(wp1, wp2, wp3)
points.SetPoint(0, wp1[:3])
normals.SetTuple3(0, *normal1)
normal2 = calculate_normal_from_points(wp1_, wp3_, wp2_)
points.SetPoint(1, wp1_[:3])
normals.SetTuple3(1, *normal2)
normal3 = calculate_normal_from_points(wp1, wp3, wp1_)
points.SetPoint(2, wp1[:3])
normals.SetTuple3(2, *normal3)
normal4 = calculate_normal_from_points(wp1, wp1_, wp2)
points.SetPoint(3, wp1[:3])
normals.SetTuple3(3, *normal4)
normal5 = calculate_normal_from_points(wp2, wp2_, wp3)
points.SetPoint(4, wp2[:3])
normals.SetTuple3(4, *normal5)
points.SetPoint(5, wp2[:3])
normals.SetTuple3(5, *normal5)
planes = vtk.vtkPlanes()
planes.SetNormals(normals)
planes.SetPoints(points)
return planes
def picking_ray(pos, renderer):
"""
:param pos: list
:param renderer: vtk.vtkRenderer
:return:
"""
selectionX = pos[0]
selectionY = pos[1]
selectionZ = pos[2]
# code below is adapted from vtkPicker::Pick to calculate ray end points
# Initialize picking process
selection_point = [selectionX, selectionY, selectionZ]
# Get camera focal point and position. Convert to display (screen)
# coordinates. We need a depth value for z-buffer.
camera = renderer.GetActiveCamera()
cameraPos = camera.GetPosition()
cameraPos += (1., )
cameraFP = camera.GetFocalPoint()
cameraFP += (1., )
renderer.SetWorldPoint(cameraFP[0], cameraFP[1], cameraFP[2], cameraFP[3])
renderer.WorldToDisplay()
displayCoords = renderer.GetDisplayPoint()
selectionZ = displayCoords[2]
# Convert the selection point into world coordinates.
renderer.SetDisplayPoint(selectionX, selectionY, selectionZ)
renderer.DisplayToWorld()
worldCoords = renderer.GetWorldPoint()
if worldCoords[3] == 0.:
debuginfo("Bad homogeneous coordinates")
return -1
PickPosition = [0, 0, 0]
for i in range(3):
PickPosition[i] = worldCoords[i] / worldCoords[3]
# Compute the ray endpoints. The ray is along the line running from
# the camera position to the selection point, starting where this line
# intersects the front clipping plane, and terminating where this
# line intersects the back clipping plane.
ray = [0, 0, 0]
cameraDOP = [0, 0, 0]
magnitude = 0.
for i in range(3):
ray[i] = PickPosition[i] - cameraPos[i]
cameraDOP[i] = cameraFP[i] - cameraPos[i]
magnitude += cameraDOP[i]**2
magnitude **= 0.5
for i in range(3):
cameraDOP[i] /= magnitude
dot_product = cameraDOP[0] * ray[0] + cameraDOP[1] * ray[1] + cameraDOP[
2] * ray[2]
if dot_product == 0.:
debuginfo("Cannot process points")
return -1
rayLength = dot_product
clipRange = camera.GetClippingRange()
p1World = [0, 0, 0, 0]
p2World = [0, 0, 0, 0]
if camera.GetParallelProjection():
tF = clipRange[0] - rayLength
tB = clipRange[1] - rayLength
for i in range(3):
p1World[i] = PickPosition[i] + tF * cameraDOP[i]
p2World[i] = PickPosition[i] + tB * cameraDOP[i]
else:
tF = clipRange[0] / rayLength
tB = clipRange[1] / rayLength
for i in range(3):
p1World[i] = cameraPos[i] + tF * ray[i]
p2World[i] = cameraPos[i] + tB * ray[i]
p1World[3] = p2World[3] = 1.
return [selection_point, PickPosition, p1World, p2World]
def dispatch(self, action, tracking=True, traceback=True, action_str=None):
# debuginfo(action)
if traceback is True and self._parent_dispatcher is not None:
return self._dispatch(action, tracking)
try:
assert isinstance(action, (str, tuple))
except AssertionError:
debuginfo(action.__class__.__name__)
raise
if self._try_undo_redo(action):
return True
if isinstance(action, str):
i1 = action.index('(')
action_name = action[:i1]
action_data = action[i1:]
if '.' in action_name:
# try:
tmp = action_name.split('.')
# noinspection SpellCheckingInspection
childname = tmp[0]
action_ = '.'.join(tmp[1:]) + action_data
# print(self.dispatcher_id, childname, action_)
try:
# debuginfo(
# 'Calling child dispatcher {%s} from {%s}. {%s} {%s}' % (
# childname, self.dispatcher_id, action_, action_str
# )
# )
return self._children_dispatchers[childname].dispatch(action_, tracking, False, action_str)
except KeyError:
debuginfo('###########################################')
debuginfo(self.dispatcher_id, childname, action, action_)
debuginfo(list(self._children_dispatchers.keys()))
debuginfo('###########################################')
raise
# except AttributeError:
# pass
# print(1, self.dispatcher_id, action)
command = self._get_command(action)
# print(2)
if command is None:
return False
command = self._encapsulate_command(command)
# print(3)
command.skip_first = False
command.redo()
command_result = command.command_result
command.skip_first = True
# print(4)
self._action_data = None
# TODO: not sure if this is the desired behavior
if command_result is False:
return False
action_ = command.action
if action_.log_action is True and tracking is True:
if action_str is None:
action_str = str(action_)
self.action_history.append(action_str)
# this notifies the main window that an action has been added, so that it can update the log
self.action_added.emit(action_str)
# if the action is successful, push it to the stack (it will be skipped on first push)
if command_result is True:
if command.push_to_stack and tracking is True:
self.undo_stack.push(command)
if command.set_clean is True:
self.undo_stack.setClean()
return True
else:
return False