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panda3d/doc/SceneEditor/seManipulation.py
Dave Schuyler c76f0eea10 PandaObject to DirectObject
2005-12-20 04:26:50 +00:00

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#################################################################
# seManipulation.py
# Originally from DirectManipulation.py
# Altered by Yi-Hong Lin, yihhongl@andrew.cmu.edu, 2004
#
# We didn't change anything essential.
# Just because we customized the seSession from DirectSession,
# So we need related files can follow the change.
# However, we don't want to change anything inside the original directool
# to let them can work with our scene editor.
# (If we do change original directools, it will force user has to install the latest version of OUR Panda)
#
#################################################################
from direct.showbase.DirectObject import *
from direct.directtools.DirectGlobals import *
from direct.directtools.DirectUtil import *
from seGeometry import *
from direct.task import Task
class DirectManipulationControl(DirectObject):
def __init__(self):
# Create the grid
self.objectHandles = ObjectHandles()
self.hitPt = Point3(0)
self.prevHit = Vec3(0)
self.rotationCenter = Point3(0)
self.initScaleMag = 1
self.manipRef = SEditor.group.attachNewNode('manipRef')
self.hitPtDist = 0
self.constraint = None
self.rotateAxis = 'x'
self.lastCrankAngle = 0
self.fSetCoa = 0
self.fHitInit = 1
self.fScaleInit = 1
self.fWidgetTop = 0
self.fFreeManip = 1
self.fScaling = 0
self.mode = None
self.actionEvents = [
['DIRECT-mouse1', self.manipulationStart],
['DIRECT-mouse1Up', self.manipulationStop],
['tab', self.toggleObjectHandlesMode],
['.', self.objectHandles.multiplyScalingFactorBy, 2.0],
['>', self.objectHandles.multiplyScalingFactorBy, 2.0],
[',', self.objectHandles.multiplyScalingFactorBy, 0.5],
['<', self.objectHandles.multiplyScalingFactorBy, 0.5],
['shift-f', self.objectHandles.growToFit],
['i', self.plantSelectedNodePath],
]
def manipulationStart(self, modifiers):
# Start out in select mode
self.mode = 'select'
# Check for a widget hit point
entry = SEditor.iRay.pickWidget()
# Did we hit a widget?
if entry:
# Yes!
self.hitPt.assign(entry.getSurfacePoint(entry.getFromNodePath()))
self.hitPtDist = Vec3(self.hitPt).length()
# Constraint determined by nodes name
self.constraint = entry.getIntoNodePath().getName()
else:
# Nope, off the widget, no constraint
self.constraint = None
# Check to see if we are moving the object
# We are moving the object if we either wait long enough
taskMgr.doMethodLater(MANIPULATION_MOVE_DELAY,
self.switchToMoveMode,
'manip-move-wait')
# Or we move far enough
self.moveDir = None
watchMouseTask = Task.Task(self.watchMouseTask)
watchMouseTask.initX = SEditor.dr.mouseX
watchMouseTask.initY = SEditor.dr.mouseY
taskMgr.add(watchMouseTask, 'manip-watch-mouse')
def switchToMoveMode(self, state):
taskMgr.remove('manip-watch-mouse')
self.mode = 'move'
self.manipulateObject()
return Task.done
def watchMouseTask(self, state):
if (((abs (state.initX - SEditor.dr.mouseX)) > 0.01) or
((abs (state.initY - SEditor.dr.mouseY)) > 0.01)):
taskMgr.remove('manip-move-wait')
self.mode = 'move'
self.manipulateObject()
return Task.done
else:
return Task.cont
def manipulationStop(self,xy=[]):
taskMgr.remove('manipulateObject')
taskMgr.remove('manip-move-wait')
taskMgr.remove('manip-watch-mouse')
# depending on flag.....
if self.mode == 'select':
# Check for object under mouse
# Don't intersect with hidden or backfacing objects
skipFlags = SKIP_HIDDEN | SKIP_BACKFACE
# Skip camera (and its children), unless control key is pressed
skipFlags |= SKIP_CAMERA * (1 - base.getControl())
entry = SEditor.iRay.pickGeom(skipFlags = skipFlags)
if entry:
# Record hit point information
self.hitPt.assign(entry.getSurfacePoint(entry.getFromNodePath()))
self.hitPtDist = Vec3(self.hitPt).length()
# Select it
SEditor.select(entry.getIntoNodePath(), SEditor.fShift)
else:
SEditor.deselectAll()
else:
self.manipulateObjectCleanup()
def manipulateObjectCleanup(self):
if self.fScaling:
# We had been scaling, need to reset object handles
self.objectHandles.transferObjectHandlesScale()
self.fScaling = 0
SEditor.selected.highlightAll()
self.objectHandles.showAllHandles()
self.objectHandles.hideGuides()
# Restart followSelectedNodePath task
self.spawnFollowSelectedNodePathTask()
messenger.send('DIRECT_manipulateObjectCleanup')
def spawnFollowSelectedNodePathTask(self):
# If nothing selected, just return
if not SEditor.selected.last:
return
# Clear out old task to make sure
taskMgr.remove('followSelectedNodePath')
# Where are the object handles relative to the selected object
pos = VBase3(0)
hpr = VBase3(0)
decomposeMatrix(SEditor.selected.last.mCoa2Dnp,
VBase3(0), hpr, pos, CSDefault)
# Create the task
t = Task.Task(self.followSelectedNodePathTask)
# Update state variables
t.pos = pos
t.hpr = hpr
t.base = SEditor.selected.last
# Spawn the task
taskMgr.add(t, 'followSelectedNodePath')
def followSelectedNodePathTask(self, state):
SEditor.widget.setPosHpr(state.base, state.pos, state.hpr)
return Task.cont
def enableManipulation(self):
# Accept events
for event in self.actionEvents:
self.accept(event[0], event[1], extraArgs = event[2:])
def disableManipulation(self):
# Ignore events
for event in self.actionEvents:
self.ignore(event[0])
self.removeManipulateObjectTask()
taskMgr.remove('manipulateObject')
taskMgr.remove('manip-move-wait')
taskMgr.remove('manip-watch-mouse')
taskMgr.remove('highlightWidgetTask')
taskMgr.remove('resizeObjectHandles')
def toggleObjectHandlesMode(self):
self.fSetCoa = 1 - self.fSetCoa
if self.fSetCoa:
self.objectHandles.coaModeColor()
else:
self.objectHandles.manipModeColor()
def removeManipulateObjectTask(self):
taskMgr.remove('manipulateObject')
def manipulateObject(self):
# Only do this if something is selected
if SEditor.selected:
# Remove the task to keep the widget attached to the object
taskMgr.remove('followSelectedNodePath')
# and the task to highlight the widget
taskMgr.remove('highlightWidgetTask')
# Set manipulation flag
self.fManip = 1
# Record undo point
SEditor.pushUndo(SEditor.selected)
# Update object handles visibility
self.objectHandles.showGuides()
self.objectHandles.hideAllHandles()
self.objectHandles.showHandle(self.constraint)
# Record relationship between selected nodes and widget
SEditor.selected.getWrtAll()
# hide the bbox of the selected objects during interaction
SEditor.selected.dehighlightAll()
# Send event to signal start of manipulation
messenger.send('DIRECT_manipulateObjectStart')
# Manipulate the real object with the constraint
# The constraint is passed as the name of the node
self.spawnManipulateObjectTask()
def spawnManipulateObjectTask(self):
# reset hit-pt flag
self.fHitInit = 1
self.fScaleInit = 1
# record initial offset between widget and camera
t = Task.Task(self.manipulateObjectTask)
t.fMouseX = abs(SEditor.dr.mouseX) > 0.9
t.fMouseY = abs(SEditor.dr.mouseY) > 0.9
if t.fMouseX:
t.constrainedDir = 'y'
else:
t.constrainedDir = 'x'
# Compute widget's xy coords in screen space
t.coaCenter = getScreenXY(SEditor.widget)
# These are used to rotate about view vector
if t.fMouseX and t.fMouseY:
t.lastAngle = getCrankAngle(t.coaCenter)
taskMgr.add(t, 'manipulateObject')
def manipulateObjectTask(self, state):
# Widget takes precedence
if self.constraint:
type = self.constraint[2:]
if type == 'post':
self.xlate1D(state)
elif type == 'disc':
self.xlate2D(state)
elif type == 'ring':
self.rotate1D(state)
# No widget interaction, determine free manip mode
elif self.fFreeManip:
# If we've been scaling and changed modes, reset object handles
if 0 and self.fScaling and (not SEditor.fAlt):
self.objectHandles.transferObjectHandlesScale()
self.fScaling = 0
# Alt key switches to a scaling mode
if SEditor.fControl:
self.fScaling = 1
self.scale3D(state)
# Otherwise, manip mode depends on where you started
elif state.fMouseX and state.fMouseY:
# In the corner, spin around camera's axis
self.rotateAboutViewVector(state)
elif state.fMouseX or state.fMouseY:
# Mouse started elsewhere in the outer frame, rotate
self.rotate2D(state)
else:
# Mouse started in central region, xlate
# Mode depends on shift key
if SEditor.fShift or SEditor.fControl:
self.xlateCamXY(state)
else:
self.xlateCamXZ(state)
if self.fSetCoa:
# Update coa based on current widget position
SEditor.selected.last.mCoa2Dnp.assign(
SEditor.widget.getMat(SEditor.selected.last))
else:
# Move the objects with the widget
SEditor.selected.moveWrtWidgetAll()
# Continue
return Task.cont
### WIDGET MANIPULATION METHODS ###
def xlate1D(self, state):
# Constrained 1D Translation along widget axis
# Compute nearest hit point along axis and try to keep
# that point as close to the current mouse position as possible
# what point on the axis is the mouse pointing at?
self.hitPt.assign(self.objectHandles.getAxisIntersectPt(
self.constraint[:1]))
# use it to see how far to move the widget
if self.fHitInit:
# First time through, just record that point
self.fHitInit = 0
self.prevHit.assign(self.hitPt)
else:
# Move widget to keep hit point as close to mouse as possible
offset = self.hitPt - self.prevHit
SEditor.widget.setPos(SEditor.widget, offset)
def xlate2D(self, state):
# Constrained 2D (planar) translation
# Compute point of intersection of ray from eyepoint through cursor
# to one of the three orthogonal planes on the widget.
# This point tracks all subsequent mouse movements
self.hitPt.assign(self.objectHandles.getWidgetIntersectPt(
SEditor.widget, self.constraint[:1]))
# use it to see how far to move the widget
if self.fHitInit:
# First time through just record hit point
self.fHitInit = 0
self.prevHit.assign(self.hitPt)
else:
offset = self.hitPt - self.prevHit
SEditor.widget.setPos(SEditor.widget, offset)
def rotate1D(self, state):
# Constrained 1D rotation about the widget's main axis (X,Y, or Z)
# Rotation depends upon circular motion of the mouse about the
# projection of the widget's origin on the image plane
# A complete circle about the widget results in a change in
# orientation of 360 degrees.
# First initialize hit point/rotation angle
if self.fHitInit:
self.fHitInit = 0
self.rotateAxis = self.constraint[:1]
self.fWidgetTop = self.widgetCheck('top?')
self.rotationCenter = getScreenXY(SEditor.widget)
self.lastCrankAngle = getCrankAngle(self.rotationCenter)
# Rotate widget based on how far cursor has swung around origin
newAngle = getCrankAngle(self.rotationCenter)
deltaAngle = self.lastCrankAngle - newAngle
if self.fWidgetTop:
deltaAngle = -1 * deltaAngle
if self.rotateAxis == 'x':
SEditor.widget.setP(SEditor.widget, deltaAngle)
elif self.rotateAxis == 'y':
if base.config.GetBool('temp-hpr-fix',0):
SEditor.widget.setR(SEditor.widget, deltaAngle)
else:
SEditor.widget.setR(SEditor.widget, -deltaAngle)
elif self.rotateAxis == 'z':
SEditor.widget.setH(SEditor.widget, deltaAngle)
# Record crank angle for next time around
self.lastCrankAngle = newAngle
def widgetCheck(self,type):
# Utility to see if we are looking at the top or bottom of
# a 2D planar widget or if we are looking at a 2D planar widget
# edge on
# Based upon angle between view vector from eye through the
# widget's origin and one of the three principle axes
axis = self.constraint[:1]
# First compute vector from eye through widget origin
mWidget2Cam = SEditor.widget.getMat(SEditor.camera)
# And determine where the viewpoint is relative to widget
pos = VBase3(0)
decomposeMatrix(mWidget2Cam, VBase3(0), VBase3(0), pos,
CSDefault)
widgetDir = Vec3(pos)
widgetDir.normalize()
# Convert specified widget axis to view space
if axis == 'x':
widgetAxis = Vec3(mWidget2Cam.xformVec(X_AXIS))
elif axis == 'y':
widgetAxis = Vec3(mWidget2Cam.xformVec(Y_AXIS))
elif axis == 'z':
widgetAxis = Vec3(mWidget2Cam.xformVec(Z_AXIS))
widgetAxis.normalize()
if type == 'top?':
# Check sign of angle between two vectors
return (widgetDir.dot(widgetAxis) < 0.)
elif type == 'edge?':
# Checking to see if we are viewing edge-on
# Check angle between two vectors
return(abs(widgetDir.dot(widgetAxis)) < .2)
### FREE MANIPULATION METHODS ###
def xlateCamXZ(self, state):
"""Constrained 2D motion parallel to the camera's image plane
This moves the object in the camera's XZ plane"""
# reset fHitInit in case we later switch to manip mode
self.fHitInit = 1
# Reset scaling init flag
self.fScaleInit = 1
# Where is the widget relative to current camera view
vWidget2Camera = SEditor.widget.getPos(SEditor.camera)
x = vWidget2Camera[0]
y = vWidget2Camera[1]
z = vWidget2Camera[2]
# Move widget (and objects) based upon mouse motion
# Scaled up accordingly based upon widget distance
dr = SEditor.dr
SEditor.widget.setX(
SEditor.camera,
x + 0.5 * dr.mouseDeltaX * dr.nearWidth * (y/dr.near))
SEditor.widget.setZ(
SEditor.camera,
z + 0.5 * dr.mouseDeltaY * dr.nearHeight * (y/dr.near))
def xlateCamXY(self, state):
"""Constrained 2D motion perpendicular to camera's image plane
This moves the object in the camera's XY plane if shift is held
Moves object toward camera if control is held
"""
# Reset scaling init flag
self.fScaleInit = 1
# Now, where is the widget relative to current camera view
vWidget2Camera = SEditor.widget.getPos(SEditor.camera)
# If this is first time around, record initial y distance
if self.fHitInit:
self.fHitInit = 0
# Use distance to widget to scale motion along Y
self.xlateSF = Vec3(vWidget2Camera).length()
# Get widget's current xy coords in screen space
coaCenter = getNearProjectionPoint(SEditor.widget)
self.deltaNearX = coaCenter[0] - SEditor.dr.nearVec[0]
# Which way do we move the object?
if SEditor.fControl:
moveDir = Vec3(vWidget2Camera)
# If widget is behind camera invert vector
if moveDir[1] < 0.0:
moveDir.assign(moveDir * -1)
moveDir.normalize()
else:
moveDir = Vec3(Y_AXIS)
# Move selected objects
dr = SEditor.dr
# Scale move dir
moveDir.assign(moveDir * (2.0 * dr.mouseDeltaY * self.xlateSF))
# Add it to current widget offset
vWidget2Camera += moveDir
# The object, however, stays at the same relative point to mouse in X
vWidget2Camera.setX((dr.nearVec[0] + self.deltaNearX) *
(vWidget2Camera[1]/dr.near))
# Move widget
SEditor.widget.setPos(SEditor.camera, vWidget2Camera)
def rotate2D(self, state):
""" Virtual trackball rotation of widget """
# Reset init flag in case we switch to another mode
self.fHitInit = 1
# Reset scaling init flag
self.fScaleInit = 1
tumbleRate = 360
# If moving outside of center, ignore motion perpendicular to edge
if ((state.constrainedDir == 'y') and (abs(SEditor.dr.mouseX) > 0.9)):
deltaX = 0
deltaY = SEditor.dr.mouseDeltaY
elif ((state.constrainedDir == 'x') and (abs(SEditor.dr.mouseY) > 0.9)):
deltaX = SEditor.dr.mouseDeltaX
deltaY = 0
else:
deltaX = SEditor.dr.mouseDeltaX
deltaY = SEditor.dr.mouseDeltaY
# Mouse motion edge to edge of display region results in one full turn
relHpr(SEditor.widget, SEditor.camera, deltaX * tumbleRate,
-deltaY * tumbleRate, 0)
def rotateAboutViewVector(self, state):
# Reset init flag in case we switch to another mode
self.fHitInit = 1
# Reset scaling init flag
self.fScaleInit = 1
# Compute current angle
angle = getCrankAngle(state.coaCenter)
deltaAngle = angle - state.lastAngle
state.lastAngle = angle
# Mouse motion edge to edge of display region results in one full turn
if base.config.GetBool('temp-hpr-fix',0):
relHpr(SEditor.widget, SEditor.camera, 0, 0, -deltaAngle)
else:
relHpr(SEditor.widget, SEditor.camera, 0, 0, deltaAngle)
def scale3D(self, state):
# Scale the selected node based upon up down mouse motion
# Mouse motion from edge to edge results in a factor of 4 scaling
# From midpoint to edge doubles or halves objects scale
if self.fScaleInit:
self.fScaleInit = 0
self.manipRef.setPos(SEditor.widget, 0, 0, 0)
self.manipRef.setHpr(SEditor.camera, 0, 0, 0)
self.initScaleMag = Vec3(
self.objectHandles.getWidgetIntersectPt(
self.manipRef, 'y')).length()
# record initial scale
self.initScale = SEditor.widget.getScale()
# Reset fHitInitFlag
self.fHitInit = 1
# Begin
# Scale factor is ratio current mag with init mag
currScale = (
self.initScale *
(self.objectHandles.getWidgetIntersectPt(
self.manipRef, 'y').length() /
self.initScaleMag)
)
SEditor.widget.setScale(currScale)
## Utility functions ##
def plantSelectedNodePath(self):
""" Move selected object to intersection point of cursor on scene """
# Check for intersection
entry = SEditor.iRay.pickGeom(
skipFlags = SKIP_HIDDEN | SKIP_BACKFACE | SKIP_CAMERA)
# MRM: Need to handle moving COA
if (entry != None) and (SEditor.selected.last != None):
# Record undo point
SEditor.pushUndo(SEditor.selected)
# Record wrt matrix
SEditor.selected.getWrtAll()
# Move selected
SEditor.widget.setPos(
SEditor.camera,entry.getSurfacePoint(entry.getFromNodePath()))
# Move all the selected objects with widget
# Move the objects with the widget
SEditor.selected.moveWrtWidgetAll()
# Let everyone know that something was moved
messenger.send('DIRECT_manipulateObjectCleanup')
class ObjectHandles(NodePath,DirectObject):
def __init__(self):
# Initialize the superclass
NodePath.__init__(self)
# Load up object handles model and assign it to self
self.assign(loader.loadModel('models/misc/objectHandles'))
self.setName('objectHandles')
self.scalingNode = self.getChild(0)
self.scalingNode.setName('ohScalingNode')
self.ohScalingFactor = 1.0
# To avoid recreating a vec every frame
self.hitPt = Vec3(0)
# Get a handle on the components
self.xHandles = self.find('**/X')
self.xPostGroup = self.xHandles.find('**/x-post-group')
self.xPostCollision = self.xHandles.find('**/x-post')
self.xRingGroup = self.xHandles.find('**/x-ring-group')
self.xRingCollision = self.xHandles.find('**/x-ring')
self.xDiscGroup = self.xHandles.find('**/x-disc-group')
self.xDisc = self.xHandles.find('**/x-disc-visible')
self.xDiscCollision = self.xHandles.find('**/x-disc')
self.yHandles = self.find('**/Y')
self.yPostGroup = self.yHandles.find('**/y-post-group')
self.yPostCollision = self.yHandles.find('**/y-post')
self.yRingGroup = self.yHandles.find('**/y-ring-group')
self.yRingCollision = self.yHandles.find('**/y-ring')
self.yDiscGroup = self.yHandles.find('**/y-disc-group')
self.yDisc = self.yHandles.find('**/y-disc-visible')
self.yDiscCollision = self.yHandles.find('**/y-disc')
self.zHandles = self.find('**/Z')
self.zPostGroup = self.zHandles.find('**/z-post-group')
self.zPostCollision = self.zHandles.find('**/z-post')
self.zRingGroup = self.zHandles.find('**/z-ring-group')
self.zRingCollision = self.zHandles.find('**/z-ring')
self.zDiscGroup = self.zHandles.find('**/z-disc-group')
self.zDisc = self.zHandles.find('**/z-disc-visible')
self.zDiscCollision = self.zHandles.find('**/z-disc')
# Adjust visiblity, colors, and transparency
self.xPostCollision.hide()
self.xRingCollision.hide()
self.xDisc.setColor(1,0,0,.2)
self.yPostCollision.hide()
self.yRingCollision.hide()
self.yDisc.setColor(0,1,0,.2)
self.zPostCollision.hide()
self.zRingCollision.hide()
self.zDisc.setColor(0,0,1,.2)
# Augment geometry with lines
self.createObjectHandleLines()
# Create long markers to help line up in world
self.createGuideLines()
self.hideGuides()
# Start with widget handles hidden
self.fActive = 1
self.toggleWidget()
# Make sure object handles are never lit or drawn in wireframe
useDirectRenderStyle(self)
def coaModeColor(self):
self.setColor(.5,.5,.5,1)
def manipModeColor(self):
self.clearColor()
def toggleWidget(self):
if self.fActive:
self.deactivate()
else:
self.activate()
def activate(self):
self.scalingNode.reparentTo(self)
self.fActive = 1
def deactivate(self):
self.scalingNode.reparentTo(hidden)
self.fActive = 0
def showWidgetIfActive(self):
if self.fActive:
self.reparentTo(SEditor.group)
def showWidget(self):
self.reparentTo(SEditor.group)
def hideWidget(self):
self.reparentTo(hidden)
def enableHandles(self, handles):
if type(handles) == types.ListType:
for handle in handles:
self.enableHandle(handle)
elif handles == 'x':
self.enableHandles(['x-post','x-ring','x-disc'])
elif handles == 'y':
self.enableHandles(['y-post','y-ring','y-disc'])
elif handles == 'z':
self.enableHandles(['z-post','z-ring','z-disc'])
elif handles == 'post':
self.enableHandles(['x-post','y-post','z-post'])
elif handles == 'ring':
self.enableHandles(['x-ring','y-ring','z-ring'])
elif handles == 'disc':
self.enableHandles(['x-disc','y-disc','z-disc'])
elif handles == 'all':
self.enableHandles(['x-post','x-ring','x-disc',
'y-post','y-ring','y-disc',
'z-post','z-ring','z-disc'])
def enableHandle(self, handle):
if handle == 'x-post':
self.xPostGroup.reparentTo(self.xHandles)
elif handle == 'x-ring':
self.xRingGroup.reparentTo(self.xHandles)
elif handle == 'x-disc':
self.xDiscGroup.reparentTo(self.xHandles)
if handle == 'y-post':
self.yPostGroup.reparentTo(self.yHandles)
elif handle == 'y-ring':
self.yRingGroup.reparentTo(self.yHandles)
elif handle == 'y-disc':
self.yDiscGroup.reparentTo(self.yHandles)
if handle == 'z-post':
self.zPostGroup.reparentTo(self.zHandles)
elif handle == 'z-ring':
self.zRingGroup.reparentTo(self.zHandles)
elif handle == 'z-disc':
self.zDiscGroup.reparentTo(self.zHandles)
def disableHandles(self, handles):
if type(handles) == types.ListType:
for handle in handles:
self.disableHandle(handle)
elif handles == 'x':
self.disableHandles(['x-post','x-ring','x-disc'])
elif handles == 'y':
self.disableHandles(['y-post','y-ring','y-disc'])
elif handles == 'z':
self.disableHandles(['z-post','z-ring','z-disc'])
elif handles == 'post':
self.disableHandles(['x-post','y-post','z-post'])
elif handles == 'ring':
self.disableHandles(['x-ring','y-ring','z-ring'])
elif handles == 'disc':
self.disableHandles(['x-disc','y-disc','z-disc'])
elif handles == 'all':
self.disableHandles(['x-post','x-ring','x-disc',
'y-post','y-ring','y-disc',
'z-post','z-ring','z-disc'])
def disableHandle(self, handle):
if handle == 'x-post':
self.xPostGroup.reparentTo(hidden)
elif handle == 'x-ring':
self.xRingGroup.reparentTo(hidden)
elif handle == 'x-disc':
self.xDiscGroup.reparentTo(hidden)
if handle == 'y-post':
self.yPostGroup.reparentTo(hidden)
elif handle == 'y-ring':
self.yRingGroup.reparentTo(hidden)
elif handle == 'y-disc':
self.yDiscGroup.reparentTo(hidden)
if handle == 'z-post':
self.zPostGroup.reparentTo(hidden)
elif handle == 'z-ring':
self.zRingGroup.reparentTo(hidden)
elif handle == 'z-disc':
self.zDiscGroup.reparentTo(hidden)
def showAllHandles(self):
self.xPost.show()
self.xRing.show()
self.xDisc.show()
self.yPost.show()
self.yRing.show()
self.yDisc.show()
self.zPost.show()
self.zRing.show()
self.zDisc.show()
def hideAllHandles(self):
self.xPost.hide()
self.xRing.hide()
self.xDisc.hide()
self.yPost.hide()
self.yRing.hide()
self.yDisc.hide()
self.zPost.hide()
self.zRing.hide()
self.zDisc.hide()
def showHandle(self, handle):
if handle == 'x-post':
self.xPost.show()
elif handle == 'x-ring':
self.xRing.show()
elif handle == 'x-disc':
self.xDisc.show()
elif handle == 'y-post':
self.yPost.show()
elif handle == 'y-ring':
self.yRing.show()
elif handle == 'y-disc':
self.yDisc.show()
elif handle == 'z-post':
self.zPost.show()
elif handle == 'z-ring':
self.zRing.show()
elif handle == 'z-disc':
self.zDisc.show()
def showGuides(self):
self.guideLines.show()
def hideGuides(self):
self.guideLines.hide()
def setScalingFactor(self, scaleFactor):
self.ohScalingFactor = scaleFactor
self.scalingNode.setScale(self.ohScalingFactor)
def getScalingFactor(self):
return self.scalingNode.getScale()
def transferObjectHandlesScale(self):
# see how much object handles have been scaled
ohs = self.getScale()
sns = self.scalingNode.getScale()
# Transfer this to the scaling node
self.scalingNode.setScale(
ohs[0] * sns[0],
ohs[1] * sns[1],
ohs[2] * sns[2])
self.setScale(1)
def multiplyScalingFactorBy(self, factor):
taskMgr.remove('resizeObjectHandles')
sf = self.ohScalingFactor = self.ohScalingFactor * factor
self.scalingNode.lerpScale(sf,sf,sf, 0.5,
blendType = 'easeInOut',
task = 'resizeObjectHandles')
def growToFit(self):
taskMgr.remove('resizeObjectHandles')
# Increase handles scale until they cover 80% of the min dimension
# Originally, here is "cover 30% of the min dimension", we changed.
pos = SEditor.widget.getPos(SEditor.camera)
minDim = min(SEditor.dr.nearWidth, SEditor.dr.nearHeight)
sf = 0.4 * minDim * (pos[1]/SEditor.dr.near)
self.ohScalingFactor = sf
self.scalingNode.lerpScale(sf,sf,sf, 0.5,
blendType = 'easeInOut',
task = 'resizeObjectHandles')
def createObjectHandleLines(self):
# X post
self.xPost = self.xPostGroup.attachNewNode('x-post-visible')
lines = LineNodePath(self.xPost)
lines.setColor(VBase4(1,0,0,1))
lines.setThickness(5)
lines.moveTo(0,0,0)
lines.drawTo(1.5,0,0)
lines.create()
lines = LineNodePath(self.xPost)
lines.setColor(VBase4(1,0,0,1))
lines.setThickness(1.5)
lines.moveTo(0,0,0)
lines.drawTo(-1.5,0,0)
lines.create()
# X ring
self.xRing = self.xRingGroup.attachNewNode('x-ring-visible')
lines = LineNodePath(self.xRing)
lines.setColor(VBase4(1,0,0,1))
lines.setThickness(3)
lines.moveTo(0,1,0)
for ang in range(15, 370, 15):
lines.drawTo(0,
math.cos(deg2Rad(ang)),
math.sin(deg2Rad(ang)))
lines.create()
# Y post
self.yPost = self.yPostGroup.attachNewNode('y-post-visible')
lines = LineNodePath(self.yPost)
lines.setColor(VBase4(0,1,0,1))
lines.setThickness(5)
lines.moveTo(0,0,0)
lines.drawTo(0,1.5,0)
lines.create()
lines = LineNodePath(self.yPost)
lines.setColor(VBase4(0,1,0,1))
lines.setThickness(1.5)
lines.moveTo(0,0,0)
lines.drawTo(0,-1.5,0)
lines.create()
# Y ring
self.yRing = self.yRingGroup.attachNewNode('y-ring-visible')
lines = LineNodePath(self.yRing)
lines.setColor(VBase4(0,1,0,1))
lines.setThickness(3)
lines.moveTo(1,0,0)
for ang in range(15, 370, 15):
lines.drawTo(math.cos(deg2Rad(ang)),
0,
math.sin(deg2Rad(ang)))
lines.create()
# Z post
self.zPost = self.zPostGroup.attachNewNode('z-post-visible')
lines = LineNodePath(self.zPost)
lines.setColor(VBase4(0,0,1,1))
lines.setThickness(5)
lines.moveTo(0,0,0)
lines.drawTo(0,0,1.5)
lines.create()
lines = LineNodePath(self.zPost)
lines.setColor(VBase4(0,0,1,1))
lines.setThickness(1.5)
lines.moveTo(0,0,0)
lines.drawTo(0,0,-1.5)
lines.create()
# Z ring
self.zRing = self.zRingGroup.attachNewNode('z-ring-visible')
lines = LineNodePath(self.zRing)
lines.setColor(VBase4(0,0,1,1))
lines.setThickness(3)
lines.moveTo(1,0,0)
for ang in range(15, 370, 15):
lines.drawTo(math.cos(deg2Rad(ang)),
math.sin(deg2Rad(ang)),
0)
lines.create()
def createGuideLines(self):
self.guideLines = self.attachNewNode('guideLines')
# X guide lines
lines = LineNodePath(self.guideLines)
lines.setColor(VBase4(1,0,0,1))
lines.setThickness(0.5)
lines.moveTo(-500,0,0)
lines.drawTo(500,0,0)
lines.create()
lines.setName('x-guide')
# Y guide lines
lines = LineNodePath(self.guideLines)
lines.setColor(VBase4(0,1,0,1))
lines.setThickness(0.5)
lines.moveTo(0,-500,0)
lines.drawTo(0,500,0)
lines.create()
lines.setName('y-guide')
# Z guide lines
lines = LineNodePath(self.guideLines)
lines.setColor(VBase4(0,0,1,1))
lines.setThickness(0.5)
lines.moveTo(0,0,-500)
lines.drawTo(0,0,500)
lines.create()
lines.setName('z-guide')
def getAxisIntersectPt(self, axis):
# Calc the xfrom from camera to widget
mCam2Widget = SEditor.camera.getMat(SEditor.widget)
lineDir = Vec3(mCam2Widget.xformVec(SEditor.dr.nearVec))
lineDir.normalize()
# And determine where the viewpoint is relative to widget
lineOrigin = VBase3(0)
decomposeMatrix(mCam2Widget, VBase3(0), VBase3(0), lineOrigin,
CSDefault)
# Now see where this hits the plane containing the 1D motion axis.
# Pick the intersection plane most normal to the intersection ray
# by comparing lineDir with plane normals. The plane with the
# largest dotProduct is most "normal"
if axis == 'x':
if (abs(lineDir.dot(Y_AXIS)) > abs(lineDir.dot(Z_AXIS))):
self.hitPt.assign(
planeIntersect(lineOrigin, lineDir, ORIGIN, Y_AXIS))
else:
self.hitPt.assign(
planeIntersect(lineOrigin, lineDir, ORIGIN, Z_AXIS))
# We really only care about the nearest point on the axis
self.hitPt.setY(0)
self.hitPt.setZ(0)
elif axis == 'y':
if (abs(lineDir.dot(X_AXIS)) > abs(lineDir.dot(Z_AXIS))):
self.hitPt.assign(
planeIntersect(lineOrigin, lineDir, ORIGIN, X_AXIS))
else:
self.hitPt.assign(
planeIntersect(lineOrigin, lineDir, ORIGIN, Z_AXIS))
# We really only care about the nearest point on the axis
self.hitPt.setX(0)
self.hitPt.setZ(0)
elif axis == 'z':
if (abs(lineDir.dot(X_AXIS)) > abs(lineDir.dot(Y_AXIS))):
self.hitPt.assign(
planeIntersect(lineOrigin, lineDir, ORIGIN, X_AXIS))
else:
self.hitPt.assign(
planeIntersect(lineOrigin, lineDir, ORIGIN, Y_AXIS))
# We really only care about the nearest point on the axis
self.hitPt.setX(0)
self.hitPt.setY(0)
return self.hitPt
def getWidgetIntersectPt(self, nodePath, plane):
# Find out the point of interection of the ray passing though the mouse
# with the plane containing the 2D xlation or 1D rotation widgets
# Calc the xfrom from camera to the nodePath
mCam2NodePath = SEditor.camera.getMat(nodePath)
# And determine where the viewpoint is relative to widget
lineOrigin = VBase3(0)
decomposeMatrix(mCam2NodePath, VBase3(0), VBase3(0), lineOrigin,
CSDefault)
# Next we find the vector from viewpoint to the widget through
# the mouse's position on near plane.
# This defines the intersection ray
lineDir = Vec3(mCam2NodePath.xformVec(SEditor.dr.nearVec))
lineDir.normalize()
# Find the hit point
if plane == 'x':
self.hitPt.assign(planeIntersect(
lineOrigin, lineDir, ORIGIN, X_AXIS))
elif plane == 'y':
self.hitPt.assign(planeIntersect(
lineOrigin, lineDir, ORIGIN, Y_AXIS))
elif plane == 'z':
self.hitPt.assign(planeIntersect(
lineOrigin, lineDir, ORIGIN, Z_AXIS))
return self.hitPt
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