class Logger:
"""
Prints messages to the consol and/or file and or gui element
"""
def __init__(self, gui=None, out_file=None):
self.notify = DirectNotify().newCategory('a4p')
self.gui = gui
self.out_file = None
if out_file:
self.out_file = open(path + out_file, 'a')
self.out_file.write('---<Opening file on: ' + str(datetime.now()) +
' >---\n')
self.debug('Logger is now logging')
self.debug('Logger gui is ' + str(gui))
self.debug('Logger out_file is ' + str(out_file))
def error(self, msg):
if self.gui:
self.gui.showMsg('Error: ' + msg)
if self.out_file:
self.out_file.write('Error:' + msg + '\n')
self.notify.warning('Error: ' + msg)
def warning(self, msg):
self.notify.warning(msg)
if self.gui:
self.gui.showMsg('Warning: ' + msg)
if self.out_file:
self.out_file.write('Warning: ' + msg + '\n')
def info(self, msg):
self.notify.info(msg)
if self.gui:
self.gui.showMsg(msg)
if self.out_file:
self.out_file.write(msg)
def debug(self, msg):
self.notify.debug(msg)
if self.gui:
self.gui.showMsg('Debug: ' + msg)
if self.out_file:
self.out_file.write('Debug: ' + msg + '\n')
def exception(self, msg):
if self.gui:
self.gui.showMsg('Exception: ' + msg)
if self.out_file:
self.out_file.write('Exception: ' + msg + '\n')
self.notify.error(msg)
def closeLogFile(self):
if self.out_file:
self.out_file.write('---<Closing file on: ' + str(datetime.now()) +
' >---\n')
self.out_file.close()
self.out_file = None
class Logging(object):
def __init__(self):
#create a new notify category
self._notify = DirectNotify().newCategory("CamMovement")
self._notify.info("Put some informational text here.")
self._notify.debug("Put some informational text here.")
self._notify.warning("Put some informational text here.")
self._notify.error(
"Put some informational text here.") #raise an exeption
class Logger:
"""
Prints messages to the consol and/or file and or gui element
"""
def __init__(self, gui=None, out_file=None):
self.notify = DirectNotify().newCategory('a4p')
self.gui=gui
self.out_file=None
if out_file:
self.out_file=open(path+out_file,'a')
self.out_file.write('---<Opening file on: '+str(datetime.now())+' >---\n')
self.debug('Logger is now logging')
self.debug('Logger gui is '+str(gui))
self.debug('Logger out_file is '+str(out_file))
def error(self, msg):
if self.gui:
self.gui.showMsg('Error: '+msg)
if self.out_file:
self.out_file.write('Error:'+msg+'\n')
self.notify.warning('Error: '+msg)
def warning(self, msg):
self.notify.warning(msg)
if self.gui:
self.gui.showMsg('Warning: '+msg)
if self.out_file:
self.out_file.write('Warning: '+msg+'\n')
def info(self, msg):
self.notify.info(msg)
if self.gui:
self.gui.showMsg(msg)
if self.out_file:
self.out_file.write(msg)
def debug(self, msg):
self.notify.debug(msg)
if self.gui:
self.gui.showMsg('Debug: '+msg)
if self.out_file:
self.out_file.write('Debug: '+msg+'\n')
def exception(self, msg):
if self.gui:
self.gui.showMsg('Exception: '+msg)
if self.out_file:
self.out_file.write('Exception: '+msg+'\n')
self.notify.error(msg)
def closeLogFile(self):
if self.out_file:
self.out_file.write('---<Closing file on: '+str(datetime.now())+' >---\n')
self.out_file.close()
self.out_file=None
class Logger:
def __init__(self):
self.notify = DirectNotify().newCategory("core")
def error(self, msg):
self.notify.warning(msg)
def warning(self, msg):
self.notify.warning(msg)
def info(self, msg):
self.notify.info(msg)
def debug(self, msg):
self.notify.debug(msg)
def exception(self, msg):
self.notify.error(msg)
class Logger:
def __init__(self):
self.notify = DirectNotify().newCategory("core")
def error(self, msg):
self.notify.warning(msg)
def warning(self, msg):
self.notify.warning(msg)
def info(self, msg):
self.notify.info(msg)
def debug(self, msg):
self.notify.debug(msg)
def exception(self, msg):
self.notify.error(msg)
class Grabber(object):
def __init__( self, levitNP):
""" A widget to position, rotate, and scale Panda 3D Models and Actors
* handleM1 decides what to do with a mouse1 click
-- object selection by calling handleSelection when the grabModel is inactive (hidden)
-- object manipulation by calling handleManipulationSetup (sets the stage for and launches the dragTask)
isHidden() when nothing is selected
isDragging means not running collision checks for selection setup and LMB is pressed
call handleM1 from another class to push control up
in the program hierarchy (remove inner class calls)
"""
# TODO remove selection functionality from grabber and put it in a selector class
self.levitorNP = levitNP # TODO remove this and use barebonesNP
self.selected = None
self.initialize()
def initialize(self):
"""Reset everything except LevitorNP and selected, also called inside __init__"""
self.notify = DirectNotify().newCategory('grabberErr')
self.currPlaneColNorm = Vec3(0.0)
self.isCameraControlOn = False
self.isDragging = False
self.isMultiselect = False
self.grabScaleFactor = .075
self.currTransformDir = Point3(0.0)
self.interFrameMousePosition = Point3(0.0)
self.init3DemVal = Point3(0.0)
# initCommVal holds the value before a command operation has taken place
self.initialCommandTrgVal = None
# To load the grabber model, this climbs up the absolute path to /barebones/ to gain access to the model folder
self.grabModelNP = loader.loadModel(Filename.fromOsSpecific(
ntpath.split( ntpath.split(inspect.stack()[0][1])[0] )[0])
+ '/EditorModels/widget')
self.grabModelNP.setPos(0.0, 0.0, 0.0)
self.grabModelNP.setBin("fixed", 40)
self.grabModelNP.setDepthTest(False)
self.grabModelNP.setDepthWrite(False)
self.transformOpEnum = Enum('rot, scale, trans')
self.currTransformOperation = None
# TODO For readability, use this enum in the nested if/else as was the original intent.
self.grabInd = Enum('xRot, yRot, zRot, xScaler, yScaler, zScaler, xTrans, yTrans, zTrans, xyTrans, xzTrans, zyTrans, grabCore')
grbrNodLst = [self.grabModelNP.find("**/XRotator;+h-s-i"), # 0
self.grabModelNP.find("**/YRotator;+h-s-i"), # 1
self.grabModelNP.find("**/ZRotator;+h-s-i"), # 2 end rotate
self.grabModelNP.find("**/XScaler;+h-s-i"), # 3
self.grabModelNP.find("**/YScaler;+h-s-i"), # 4
self.grabModelNP.find("**/ZScaler;+h-s-i"), # 5 end scale
self.grabModelNP.find("**/XTranslator;+h-s-i"), # 6
self.grabModelNP.find("**/YTranslator;+h-s-i"), # 7
self.grabModelNP.find("**/ZTranslator;+h-s-i"), # 8 end translate / end single dir operations
self.grabModelNP.find("**/XYTranslator;+h-s-i"), # 9
self.grabModelNP.find("**/XZTranslator;+h-s-i"), # 10
self.grabModelNP.find("**/ZYTranslator;+h-s-i"), # 11 end bi-directional operations
self.grabModelNP.find("**/WidgetCore;+h-s-i")] # 12
#Mat4.yToZUpMat() # change coordinate to z up
grbrNodLst[12].getParent().setHprScale(0, 0, 0, 1, 1, -1)
self.grabModelNP.setPythonTag('grabberRoot', grbrNodLst)
self.grabModelNP.reparentTo(BBGlobalVars.bareBonesObj.levitorNP)
self.grabModelNP.hide()
#self.grabIntoBitMask = COLLISIONMASKS
self.grabModelNP.setCollideMask(COLLISIONMASKS['default'])
self.grabModelNP.setPythonTag('grabber', self)
##############################################################################
# This whole section is the basics for setting up mouse selection
# --The mouse events are added in the events section (next)
# Create the collision node for the picker ray to add traverser as a 'from' collider
self.grabberColNode = CollisionNode('grabberMouseRay')
# Set the collision bitmask
# TODO: define collision bitmask (let user define thiers? likely not)
self.defaultBitMask = GeomNode.getDefaultCollideMask()
self.grabberColNode.setFromCollideMask(self.defaultBitMask)
self.grabberRayColNP = camera.attachNewNode(self.grabberColNode)
# Create the grabberRay and add it to the picker CollisionNode
self.grabberRay = CollisionRay(0.0, 0.0, 0.0,
0.0, 1.0, 0.0)
self.grabberRayNP = self.grabberColNode.addSolid(self.grabberRay)
# create a collision queue for the traverser
self.colHandlerQueue = CollisionHandlerQueue()
# Create collision traverser
self.colTraverser = CollisionTraverser('grabberTraverser')
# Set the collision traverser's 'fromObj' and handler
# e.g. trav.addCollider( fromObj, handler )
self.colTraverser.addCollider(self.grabberRayColNP, self.colHandlerQueue)
############################################################
# setup event handling with the messenger
# URGENT remove all of this messenger code throughout Grabber, especially the camera control
# disable the mouse when the ~ is pressed (w/o shift)
self.disableCamera() # disable camera control by the mouse
messenger.accept('`', self, self.enableCamera) # enable camera control when the ~ key is pressed w/o shift
messenger.accept('`-up', self, self.disableCamera) # disable camera control when the ~ key is released
# handle mouse selection/deselection & manipulating the scene
messenger.accept('mouse1', self, self.handleM1, persistent=1) # deselect in event handler
taskMgr.add(self.scaleGrabber, 'scaleGrabber')
# ////////////////////////////////////////////////////////////////////
# comment out: good for debug info
#taskMgr.add(self.watchMouseColl, name='grabberDebug')
#this is only good for seeing types and hierarchy
#self.grabModelNP.ls()
#render.ls()
# self.frames = 0 #remove
# self.axis = loader.loadModel("zup-axis")
# self.axis.reparentTo(self.grabModelNP)
# self.axis.setScale(.15)
# self.axis.setPos(0.0)
# self.grabModelNP.append( 'newAttrib', self)
# setattr( self.grabModelNP, 'newAttrib', self)
def prepareForPickle(self):
self.colTraverser = None # Traversers are not picklable
self.defaultBitMask = None # BitMasks "..."
# self.grabIntoBitMask = None # "..."
self.colHandlerQueue = None # CollisonHandlerQueue "..."
self.grabModelNP.removeNode()
self.grabModelNP = None
taskMgr.remove('scaleGrabber')
def recoverFromPickle(self):
self.initialize()
if self.selected is not None:
self.grabModelNP.setPos(render, self.selected.getPos(render))
self.grabModelNP.show()
print "grabber sel ", self.selected, " isHidden() ", self.grabModelNP.isHidden(), '\n'
taskMgr.add(self.scaleGrabber, 'scaleGrabber')
#### May use to gain control over pickling.
# def __repr__(self): # for pickling purposes
# if self.colTraverser:
# self.colTraverser = None
#
# dictrepr = dict.__repr__(self.__dict__)
# dictrepr = '%r(%r)' % (type(self).__name__, dictrepr)
# print dictrepr # REMOVE
# return dictrepr
def watchMouseColl(self, task):
""" This exists for debugging purposes to perpetually watch mouse collisions.
"""
# TODO make this highlight objects under the mouse for predictable object selection/grabber operations
self.colTraverser.showCollisions(render)
if base.mouseWatcherNode.hasMouse() and False == self.isCameraControlOn:
# This gives the screen coordinates of the mouse.
mPos = base.mouseWatcherNode.getMouse()
# This makes the ray's origin the camera and makes the ray point
# to the screen coordinates of the mouse.
self.grabberRay.setFromLens(base.camNode, mPos.getX(), mPos.getY())
# traverses the graph for collisions
self.colTraverser.traverse(render)
return task.cont
def scaleGrabber(self, task):
if self.grabModelNP.isHidden():
return task.cont
coreLst = self.grabModelNP.getPythonTag('grabberRoot')
camPos = self.grabModelNP.getRelativePoint(self.grabModelNP, camera.getPos())
if camPos.z >= 0: # 1-4
if camPos.x > 0.0 <= camPos.y: # quad 1
coreLst[12].getParent().setScale( 1, 1, -1)
elif camPos.x < 0.0 <= camPos.y: # quad 2
coreLst[12].getParent().setScale( -1, 1, -1)
elif camPos.x < 0.0 >= camPos.y: # quad 3
coreLst[12].getParent().setScale( -1, -1, -1)
elif camPos.x > 0.0 >= camPos.y: # quad 4
coreLst[12].getParent().setScale( 1, -1, -1)
else:
self.notify.warning("if-else default, scaleGrabber cam.z > 0")
else: # 5-8
if camPos.x > 0.0 <= camPos.y: # quad 5
coreLst[12].getParent().setScale( 1, 1, 1)
elif camPos.x < 0.0 <= camPos.y: # quad 6
coreLst[12].getParent().setScale( -1, 1, 1)
elif camPos.x < 0.0 >= camPos.y: # quad 7
coreLst[12].getParent().setScale( -1, -1, 1)
elif camPos.x > 0.0 >= camPos.y: # quad 8
coreLst[12].getParent().setScale( 1, -1, 1)
else:
self.notify.warning("if-else default, scaleGrabber cam.z z < 0")
distToCam = (camera.getPos() - render.getRelativePoint(BBGlobalVars.currCoordSysNP, self.grabModelNP.getPos())).length()
self.grabModelNP.setScale(self.grabScaleFactor * distToCam,
self.grabScaleFactor * distToCam,
self.grabScaleFactor * distToCam)
# keep the position identical to the selection
# for when outside objects like undo/redo move selected
self.grabModelNP.setPos(render, self.selected.getPos(render))
return task.cont
# TODO find a way to move camera control to a proper camera handler, perhaps move these to a global
def enableCamera(self):
self.isCameraControlOn = True
PanditorEnableMouseFunc()
def disableCamera(self):
self.isCameraControlOn = False
PanditorDisableMouseFunc()
def handleM3(self):
"""Deselect the selected object."""
if not self.grabModelNP.isHidden() and not self.isCameraControlOn:
# if the grab model is in the scene and the camera is not in control
if base.mouseWatcherNode.hasMouse() and not self.isDragging:
# we're ignoring accidental mouse3 clicks while dragging here with not isDragging
self.selected = None # empty the selected, will be turned back on once something's selected
messenger.ignore('mouse3', self) # turn the deselect event off
self.grabModelNP.hide() # hide the grab model and set it back to render's pos
self.grabModelNP.setPos(0.0)
def handleM1Up(self):
"""Stop dragging the selected object."""
taskMgr.remove('mouse1Dragging')
self.isDragging = False
self.currTransformOperation = None # NOTE other references have been added, but no other object references them
# record the mouse1 operation
BBGlobalVars.undoHandler.record(self.selected, CommandUndo([self.initialCommandTrgVal],
self.selected.setMat, self.selected.getMat(render)))
messenger.ignore('mouse1-up', self)
def handleM1(self):
"""Decides how to handle a mouse1 click."""
if self.isCameraControlOn:
return
if base.mouseWatcherNode.hasMouse():
# give the grabber first chance
if self.grabModelNP.isHidden():
# no collisions w/ grabber or nothing selected
# handle selection with scene objects
self.handleSelection()
elif not self.isDragging:
# The grabber is in place but not dragging. Get ready to drag.
self.handleManipulationSetup() # it'll call self.handleSelection() if no collision w/ grabber
# TODO (if warranted) make self.handleManipulationSetup() return false if no col w/ grabber, call selection here instead
def handleManipulationSetup(self):
"""Sets up all the attributes needed for the mouse dragging task."""
# This makes the ray's origin the camera and makes the ray point
# to the screen coordinates of the mouse.
if self.isDragging:
return
camVec = self.grabModelNP.getRelativeVector(self.grabModelNP, camera.getPos())
mPos = base.mouseWatcherNode.getMouse()
self.grabberRay.setFromLens(base.camNode, mPos.getX(), mPos.getY())
self.colTraverser.traverse(self.grabModelNP) # look for collisions on the grabber
if not self.isCameraControlOn and self.colHandlerQueue.getNumEntries() > 0 and not self.grabModelNP.isHidden():
# see if collided with the grabber if not handle re or multi selection
self.colHandlerQueue.sortEntries()
grabberObj = self.colHandlerQueue.getEntry(0).getIntoNodePath()
grabberLst = self.grabModelNP.getPythonTag('grabberRoot') # see __init__
# the index gives the operations rot < 3 scale < 6 trans < 9 trans2D < 12
# mod index gives axis 0 == x, 1 == y, 2 == z
ind = -1
for i in range(0, 13):
if grabberObj == grabberLst[i]:
ind = i
grabberObj = grabberLst[i]
# ensure we are not picking ourselves, ahem, the grabber
assert(not self.grabModelNP.isAncestorOf(self.selected))
mPos3D = Point3(0.0)
xVec = Vec3(1, 0, 0)
yVec = Vec3(0, 1, 0)
zVec = Vec3(0, 0, 1)
# TODO: ??? break this up into translate rotate and scale function to make it readable
if -1 < ind < 3: # rotate
if ind % 3 == 0: # x
self.initializeManipVars(Point3(1.0, 0.0, 0.0), self.transformOpEnum.rot,
Point3(mPos.getX(), mPos.getY(), 0.0))
elif ind % 3 == 1: # y
self.initializeManipVars(Point3(0.0, 1.0, 0.0), self.transformOpEnum.rot,
Point3(mPos.getX(), mPos.getY(), 0.0))
else: # z
self.initializeManipVars(Point3(0.0, 0.0, 1.0), self.transformOpEnum.rot,
Point3(mPos.getX(), mPos.getY(), 0.0))
elif ind < 6: # scale
if ind % 3 == 0: # x
self.initializeManipVars(Point3(1.0, 0.0, 0.0), self.transformOpEnum.scale,
Point3(mPos.getX(), mPos.getY(), 0.0))
elif ind % 3 == 1: # y
# self.currTransformDir = Point3( 0.0, 1.0, 0.0)
self.initializeManipVars(Point3(0.0, 1.0, 0.0), self.transformOpEnum.scale,
Point3(mPos.getX(), mPos.getY(), 0.0))
else: # z
# self.currTransformDir = Point3( 0.0, 0.0, 1.0)
self.initializeManipVars(Point3(0.0, 0.0, 1.0), self.transformOpEnum.scale,
Point3(mPos.getX(), mPos.getY(), 0.0))
elif ind < 9: # translate
if ind % 3 == 0: # x
# if the camera's too flat to the collision plane bad things happen
if camVec.angleDeg( zVec) < 89.0 and self.getMousePlaneIntersect(mPos3D, zVec):
self.initializeManipVars(Point3(1.0, 0.0, 0.0), self.transformOpEnum.trans, mPos3D, zVec)
elif self.getMousePlaneIntersect(mPos3D, yVec):
self.initializeManipVars(Point3(1.0, 0.0, 0.0), self.transformOpEnum.trans, mPos3D, yVec)
elif ind % 3 == 1: # y
if camVec.angleDeg( zVec) < 89.0 and self.getMousePlaneIntersect(mPos3D, zVec):
self.initializeManipVars(Point3(0.0, 1.0, 0.0), self.transformOpEnum.trans, mPos3D, zVec)
elif self.getMousePlaneIntersect(mPos3D, xVec):
self.initializeManipVars(Point3(0.0, 1.0, 0.0), self.transformOpEnum.trans, mPos3D, xVec)
else: # z
if camVec.angleDeg( yVec) < 89.0 and self.getMousePlaneIntersect(mPos3D, yVec):
self.initializeManipVars(Point3(0.0, 0.0, 1.0), self.transformOpEnum.trans, mPos3D, yVec)
elif self.getMousePlaneIntersect(mPos3D, xVec):
self.initializeManipVars(Point3(0.0, 0.0, 1.0), self.transformOpEnum.trans, mPos3D, xVec)
elif ind < 12: # translate 2D
if ind % 3 == 0: # xy
if self.getMousePlaneIntersect(mPos3D, zVec):
self.initializeManipVars(Point3(1.0, 1.0, 0.0), self.transformOpEnum.trans, mPos3D, zVec)
elif ind % 3 == 1: # xz
if self.getMousePlaneIntersect(mPos3D, yVec):
self.initializeManipVars(Point3(1.0, 0.0, 1.0), self.transformOpEnum.trans, mPos3D, yVec)
else: # zy
if self.getMousePlaneIntersect(mPos3D, xVec):
self.initializeManipVars(Point3(0.0, 1.0, 1.0), self.transformOpEnum.trans, mPos3D, xVec)
elif ind == 12: # scale in three directions
self.initializeManipVars(Point3(1.0, 1.0, 1.0), self.transformOpEnum.scale,
Point3(mPos.getX(), mPos.getY(), 0.0))
else:
self.notify.warning("Grabber Err: no grabber collision when col entries > 0 AND grabber not hidden")
# Save initial value for save/undo.
# The end result of the operation is sent to the undo handler on mouse up event.
if self.selected:
self.initialCommandTrgVal = self.selected.getMat(render)
else:
# no collisions w/ grabber or nothing selected
# handle reselection or multi-selection (not yet implemented) with other scene obj
self.handleSelection()
def handleSelection(self):
if self.isDragging:
return
# First check that the mouse is not outside the screen.
if base.mouseWatcherNode.hasMouse() and False == self.isCameraControlOn:
self.grabberColNode.setFromCollideMask(self.defaultBitMask)
# This gives the screen coordinates of the mouse.
mPos = base.mouseWatcherNode.getMouse()
# This makes the ray's origin the camera and makes the ray point
# to the screen coordinates of the mouse.
self.colHandlerQueue.clearEntries()
self.grabberRay.setFromLens(base.camNode, mPos.getX(), mPos.getY())
self.colTraverser.traverse(render) # look for collisions
if self.colHandlerQueue.getNumEntries() > 0:
self.colHandlerQueue.sortEntries()
grabbedObj = self.colHandlerQueue.getEntry(0).getIntoNodePath()
if not grabbedObj.findNetTag('pickable').isEmpty():
grabbedObj = grabbedObj.findNetTag('pickable')
self.selected = grabbedObj
self.grabModelNP.setPos(render,
grabbedObj.getPos(render).x,
grabbedObj.getPos(render).y,
grabbedObj.getPos(render).z)
self.grabModelNP.show()
messenger.accept('mouse3', self, self.handleM3)
def handleDragging(self, task):
""" Does the actual work of manipulating objects,
once the needed attributes have been setup by handleManipulationSetup().
"""
if not self.isDragging:
return task.done
mPos3D = Point3(0.0)
#
# This section handles the actual translating rotating or scale after it's been set up in mouse1SetupManip...()
# ONLY one operation is preformed per frame
if self.currTransformOperation == self.transformOpEnum.trans:
# 1st translation, rotation's section is at next elif
if self.getMousePlaneIntersect(mPos3D, self.currPlaneColNorm):
# get the difference between the last mouse and this frames mouse
selectedNewPos = mPos3D - self.interFrameMousePosition
# store this frames mouse
self.interFrameMousePosition = mPos3D
# add the difference to the selected object's pos
self.selected.setPos(render, self.selected.getPos(render).x + self.currTransformDir.x * selectedNewPos.x,
self.selected.getPos(render).y + self.currTransformDir.y * selectedNewPos.y,
self.selected.getPos(render).z + self.currTransformDir.z * selectedNewPos.z)
self.grabModelNP.setPos(render, self.selected.getPos(render))
elif self.currTransformOperation == self.transformOpEnum.rot:
# 2nd rotation, followed finally by scaling
# if operating on the z-axis, use the y (vertical screen coordinates otherwise use x (horizontal)
mPos = base.mouseWatcherNode.getMouse()
#rotMag = 0.0
if self.currTransformDir == Vec3( 0.0, 0.0, 1.0):
rotMag = (mPos.x - self.interFrameMousePosition.x) * 1000
else:
rotMag = (self.interFrameMousePosition.y - mPos.y) * 1000
initPos = self.selected.getPos()
initPar = self.selected.getParent()
self.selected.wrtReparentTo(render)
self.selected.setMat(self.selected.getMat() * Mat4.rotateMat(rotMag, self.currTransformDir))
self.selected.wrtReparentTo(initPar)
self.selected.setPos(initPos)
self.interFrameMousePosition = Point3(mPos.x, mPos.y, 0.0)
elif self.currTransformOperation == self.transformOpEnum.scale:
# 3rd and final is scaling
mPos = base.mouseWatcherNode.getMouse()
# TODO: make dragging away from the object larger and to the object smaller (not simply left right up down)
# td The problem with this MAY come if negative, mirrored, scaling is implemented.
# if operating on the z-axis, use the y (vertical screen coordinates otherwise use x (horizontal)
if self.currTransformDir == Point3( 0.0, 0.0, 1.0):
sclMag = (mPos.y - self.interFrameMousePosition.y) * 5.5
elif self.currTransformDir == Point3( 0.0, 1.0, 0.0):
sclMag = (mPos.x - self.interFrameMousePosition.x) * 5.5
else:
sclMag = (self.interFrameMousePosition.x - mPos.x) * 5.5
# This is the line that prevents scaling past the origin. Flipping the faces doesn't seem to work.
if -0.0001 < sclMag < 0.0001:
sclMag = 0.000001
# create a dummy node to parent to and position such that applying scale to it will scale selected properly
dummy = self.levitorNP.attachNewNode('dummy')
initScl = dummy.getScale()
# Don't forget the parent. Selected needs put back in place
initPar = self.selected.getParent()
initPos = self.selected.getPos()
self.selected.wrtReparentTo(dummy)
dummy.setScale(initScl.x + sclMag * self.currTransformDir.x,
initScl.y + sclMag * self.currTransformDir.y,
initScl.z + sclMag * self.currTransformDir.z)
# reset selected's parent then destroy dummy
self.selected.wrtReparentTo(initPar)
self.selected.setPos(initPos)
dummy.removeNode()
dummy = None
self.interFrameMousePosition = Point3( mPos.x, mPos.y, 0.0)
else:
self.notify.error("Err: Dragging with invalid curTransformOperation enum in handleDragging")
return task.cont # ended by handleM1Up(), the mouse1-up event handler
def initializeManipVars(self, transformDir, transformOp, mPos3D, planeNormVec=None):
self.currTransformDir = transformDir
self.currPlaneColNorm = planeNormVec # set the norm for the collision plane to be used in mouse1Dragging
self.interFrameMousePosition = mPos3D
self.currTransformOperation = transformOp
self.isDragging = True
taskMgr.add(self.handleDragging, 'mouse1Dragging')
messenger.accept('mouse1-up', self, self.handleM1Up)
def getMousePlaneIntersect(self, mPos3Dref, normVec):
mPos = base.mouseWatcherNode.getMouse()
plane = Plane(normVec, self.grabModelNP.getPos())
nearPoint = Point3()
farPoint = Point3()
base.camLens.extrude(mPos, nearPoint, farPoint)
if plane.intersectsLine(mPos3Dref,
render.getRelativePoint(camera, nearPoint),
render.getRelativePoint(camera, farPoint)):
return True
return False
def destroy(self):
raise NotImplementedError('Make sure messenger etc are cleared of refs and the model node is deleted')
self.grabModelNP.clearPythonTag('grabberRoot')
self.grabModelNP.clearPythonTag('grabber')
self.grabModelNP = None
messenger.ignoreAll(self)