from direct.showbase.DirectObject import DirectObject
from .DirectUtil import *
from .DirectGeometry import *
from .DirectGlobals import *
from .DirectSelection import SelectionRay
from direct.interval.IntervalGlobal import Sequence, Func
from direct.directnotify import DirectNotifyGlobal
from direct.task import Task
from direct.task.TaskManagerGlobal import taskMgr
CAM_MOVE_DURATION = 1.2
COA_MARKER_SF = 0.0075
Y_AXIS = Vec3(0, 1, 0)
[docs]class DirectCameraControl(DirectObject):
notify = DirectNotifyGlobal.directNotify.newCategory('DirectCameraControl')
[docs] def __init__(self):
# Create the grid
self.startT = 0.0
self.startF = 0
self.orthoViewRoll = 0.0
self.lastView = 0
self.coa = Point3(0, 100, 0)
self.coaMarker = base.loader.loadModel('models/misc/sphere')
self.coaMarker.setName('DirectCameraCOAMarker')
self.coaMarker.setTransparency(1)
self.coaMarker.setColor(1, 0, 0, 0)
self.coaMarker.setPos(0, 100, 0)
useDirectRenderStyle(self.coaMarker)
self.coaMarkerPos = Point3(0)
self.coaMarkerColorIval = None
self.fLockCOA = 0
self.nullHitPointCount = 0
self.cqEntries = []
self.coaMarkerRef = base.direct.group.attachNewNode('coaMarkerRef')
self.camManipRef = base.direct.group.attachNewNode('camManipRef')
self.switchDirBelowZero = True
self.manipulateCameraTask = None
self.manipulateCameraInterval = None
t = CAM_MOVE_DURATION
self.actionEvents = [
['DIRECT-mouse1', self.mouseRotateStart],
['DIRECT-mouse1Up', self.mouseDollyStop],
['DIRECT-mouse2', self.mouseFlyStart],
['DIRECT-mouse2Up', self.mouseFlyStop],
['DIRECT-mouse3', self.mouseDollyStart],
['DIRECT-mouse3Up', self.mouseDollyStop],
]
# [gjeon] moved all of the hotkeys to single place for easy remapping
## self.keyEvents = [
## ['c', self.centerCamIn, 0.5],
## ['f', self.fitOnWidget], # Note: This function doesn't work as intended
## ['h', self.homeCam],
## ['shift-v', self.toggleMarkerVis],
## ['m', self.moveToFit], # Note: This function doesn't work as intended; the object dissappears and screen flashes
## ['n', self.pickNextCOA],
## ['u', self.orbitUprightCam],
## ['shift-u', self.uprightCam],
## [repr(1), self.spawnMoveToView, 1],
## [repr(2), self.spawnMoveToView, 2],
## [repr(3), self.spawnMoveToView, 3],
## [repr(4), self.spawnMoveToView, 4],
## [repr(5), self.spawnMoveToView, 5],
## [repr(6), self.spawnMoveToView, 6],
## [repr(7), self.spawnMoveToView, 7],
## [repr(8), self.spawnMoveToView, 8],
## ['9', self.swingCamAboutWidget, -90.0, t],
## ['0', self.swingCamAboutWidget, 90.0, t],
## ['`', self.removeManipulateCameraTask],
## ['=', self.zoomCam, 0.5, t],
## ['+', self.zoomCam, 0.5, t],
## ['-', self.zoomCam, -2.0, t],
## ['_', self.zoomCam, -2.0, t],
## ]
self.keyEvents = [
['DIRECT-centerCamIn', self.centerCamIn, 0.5],
['DIRECT-fitOnWidget', self.fitOnWidget], # Note: This function doesn't work as intended
['DIRECT-homeCam', self.homeCam],
['DIRECT-toggleMarkerVis', self.toggleMarkerVis],
['DIRECT-moveToFit', self.moveToFit], # Note: This function doesn't work as intended; the object dissappears and screen flashes
['DIRECT-pickNextCOA', self.pickNextCOA],
['DIRECT-orbitUprightCam', self.orbitUprightCam],
['DIRECT-uprightCam', self.uprightCam],
['DIRECT-spwanMoveToView-1', self.spawnMoveToView, 1],
['DIRECT-spwanMoveToView-2', self.spawnMoveToView, 2],
['DIRECT-spwanMoveToView-3', self.spawnMoveToView, 3],
['DIRECT-spwanMoveToView-4', self.spawnMoveToView, 4],
['DIRECT-spwanMoveToView-5', self.spawnMoveToView, 5],
['DIRECT-spwanMoveToView-6', self.spawnMoveToView, 6],
['DIRECT-spwanMoveToView-7', self.spawnMoveToView, 7],
['DIRECT-spwanMoveToView-8', self.spawnMoveToView, 8],
['DIRECT-swingCamAboutWidget-0', self.swingCamAboutWidget, -90.0, t],
['DIRECT-swingCamAboutWidget-1', self.swingCamAboutWidget, 90.0, t],
['DIRECT-removeManipulateCameraTask', self.removeManipulateCameraTask],
['DIRECT-zoomInCam', self.zoomCam, 0.5, t],
['DIRECT-zoomOutCam', self.zoomCam, -2.0, t],
]
# set this to true to prevent the camera from rolling
self.lockRoll = False
# NIK - flag to determine whether to use maya camera controls
self.useMayaCamControls = 0
self.altDown = 0
self.perspCollPlane = None # [gjeon] used for new LE
self.perspCollPlane2 = None # [gjeon] used for new LE
[docs] def toggleMarkerVis(self):
## if base.direct.cameraControl.coaMarker.isHidden():
## base.direct.cameraControl.coaMarker.show()
## else:
## base.direct.cameraControl.coaMarker.hide()
if self.coaMarker.isHidden():
self.coaMarker.show()
else:
self.coaMarker.hide()
[docs] def mouseRotateStart(self, modifiers):
if self.useMayaCamControls and modifiers == 4: # alt is pressed - use maya controls
# base.direct.pushUndo([base.direct.camera]) # Wasteful use of undo
self.spawnMouseRotateTask()
[docs] def mouseDollyStart(self, modifiers):
if self.useMayaCamControls and modifiers == 4: # alt is pressed - use maya controls
# Hide the marker for this kind of motion
self.coaMarker.hide()
# Record time of start of mouse interaction
self.startT = base.clock.getFrameTime()
self.startF = base.clock.getFrameCount()
# If the cam is orthogonal, spawn differentTask
if hasattr(base.direct, "manipulationControl") and base.direct.manipulationControl.fMultiView and\
base.direct.camera.getName() != 'persp':
self.spawnOrthoZoom()
else:
# Start manipulation
self.spawnHPanYZoom()
def __stopManipulateCamera(self):
if self.manipulateCameraTask:
taskMgr.remove(self.manipulateCameraTask)
self.manipulateCameraTask = None
if self.manipulateCameraInterval:
self.manipulateCameraInterval.finish()
self.manipulateCameraInterval = None
def __startManipulateCamera(self, func = None, task = None, ival = None):
self.__stopManipulateCamera()
if func:
assert task is None
task = Task.Task(func)
if task:
self.manipulateCameraTask = taskMgr.add(task, 'manipulateCamera')
if ival:
ival.start()
self.manipulateCameraInterval = ival
[docs] def mouseDollyStop(self):
self.__stopManipulateCamera()
[docs] def mouseFlyStart(self, modifiers):
# Record undo point
# base.direct.pushUndo([base.direct.camera]) # Wasteful use of undo
if self.useMayaCamControls and modifiers == 4: # alt is down, use maya controls
# Hide the marker for this kind of motion
self.coaMarker.hide()
# Record time of start of mouse interaction
self.startT = base.clock.getFrameTime()
self.startF = base.clock.getFrameCount()
# Start manipulation
# If the cam is orthogonal, spawn differentTask
if hasattr(base.direct, "manipulationControl") and base.direct.manipulationControl.fMultiView and\
base.direct.camera.getName() != 'persp':
self.spawnOrthoTranslate()
else:
self.spawnXZTranslate()
self.altDown = 1
elif not self.useMayaCamControls:
# Where are we in the display region?
if ((abs(base.direct.dr.mouseX) < 0.9) and (abs(base.direct.dr.mouseY) < 0.9)):
# MOUSE IS IN CENTRAL REGION
# Hide the marker for this kind of motion
self.coaMarker.hide()
# Record time of start of mouse interaction
self.startT = base.clock.getFrameTime()
self.startF = base.clock.getFrameCount()
# Start manipulation
self.spawnXZTranslateOrHPanYZoom()
# END MOUSE IN CENTRAL REGION
else:
if ((abs(base.direct.dr.mouseX) > 0.9) and
(abs(base.direct.dr.mouseY) > 0.9)):
# Mouse is in corners, spawn roll task
self.spawnMouseRollTask()
else:
# Mouse is in outer frame, spawn mouseRotateTask
self.spawnMouseRotateTask()
if not modifiers == 4:
self.altDown = 0
[docs] def mouseFlyStop(self):
self.__stopManipulateCamera()
stopT = base.clock.getFrameTime()
deltaT = stopT - self.startT
stopF = base.clock.getFrameCount()
deltaF = stopF - self.startF
## No reason this shouldn't work with Maya cam on
# if not self.useMayaCamControls and (deltaT <= 0.25) or (deltaF <= 1):
# Do this when not trying to manipulate camera
if not self.altDown and len(base.direct.selected.getSelectedAsList()) == 0:
# Check for a hit point based on
# current mouse position
# Allow intersection with unpickable objects
# And then spawn task to determine mouse mode
# 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())
self.computeCOA(base.direct.iRay.pickGeom(skipFlags = skipFlags))
# Record reference point
self.coaMarkerRef.setPosHprScale(base.cam, 0, 0, 0, 0, 0, 0, 1, 1, 1)
# Record entries
self.cqEntries = []
for i in range(base.direct.iRay.getNumEntries()):
self.cqEntries.append(base.direct.iRay.getEntry(i))
# Show the marker
self.coaMarker.show()
# Resize it
self.updateCoaMarkerSize()
[docs] def mouseFlyStartTopWin(self):
print("Moving mouse 2 in new window")
#altIsDown = base.getAlt()
#if altIsDown:
# print "Alt is down"
[docs] def mouseFlyStopTopWin(self):
print("Stopping mouse 2 in new window")
[docs] def spawnXZTranslateOrHPanYZoom(self):
# Kill any existing tasks
self.__stopManipulateCamera()
# Spawn the new task
t = Task.Task(self.XZTranslateOrHPanYZoomTask)
# For HPanYZoom
t.zoomSF = Vec3(self.coaMarker.getPos(base.direct.camera)).length()
self.__startManipulateCamera(task = t)
[docs] def spawnXZTranslateOrHPPan(self):
# Kill any existing tasks
self.__stopManipulateCamera()
# Spawn new task
self.__startManipulateCamera(func = self.XZTranslateOrHPPanTask)
[docs] def spawnXZTranslate(self):
# Kill any existing tasks
self.__stopManipulateCamera()
# Spawn new task
self.__startManipulateCamera(func = self.XZTranslateTask)
[docs] def spawnOrthoTranslate(self):
# Kill any existing tasks
self.__stopManipulateCamera()
# Spawn new task
self.__startManipulateCamera(func = self.OrthoTranslateTask)
[docs] def spawnHPanYZoom(self):
# Kill any existing tasks
self.__stopManipulateCamera()
# Spawn new task
t = Task.Task(self.HPanYZoomTask)
t.zoomSF = Vec3(self.coaMarker.getPos(base.direct.camera)).length()
self.__startManipulateCamera(task = t)
[docs] def spawnOrthoZoom(self):
# Kill any existing tasks
self.__stopManipulateCamera()
# Spawn new task
t = Task.Task(self.OrthoZoomTask)
self.__startManipulateCamera(task = t)
[docs] def spawnHPPan(self):
# Kill any existing tasks
self.__stopManipulateCamera()
# Spawn new task
self.__startManipulateCamera(func = self.HPPanTask)
[docs] def XZTranslateOrHPanYZoomTask(self, state):
if base.direct.fShift:
return self.XZTranslateTask(state)
else:
return self.HPanYZoomTask(state)
[docs] def XZTranslateOrHPPanTask(self, state):
if base.direct.fShift:
# Panning action
return self.HPPanTask(state)
else:
# Translation action
return self.XZTranslateTask(state)
[docs] def XZTranslateTask(self, state):
coaDist = Vec3(self.coaMarker.getPos(base.direct.camera)).length()
xlateSF = (coaDist / base.direct.dr.near)
base.direct.camera.setPos(base.direct.camera,
(-0.5 * base.direct.dr.mouseDeltaX *
base.direct.dr.nearWidth *
xlateSF),
0.0,
(-0.5 * base.direct.dr.mouseDeltaY *
base.direct.dr.nearHeight *
xlateSF))
return Task.cont
[docs] def OrthoTranslateTask(self, state):
# create ray from the camera to detect 3d position
iRay = SelectionRay(base.direct.camera)
iRay.collider.setFromLens(base.direct.camNode, base.direct.dr.mouseX, base.direct.dr.mouseY)
#iRay.collideWithBitMask(1)
iRay.collideWithBitMask(BitMask32.bit(21))
iRay.ct.traverse(base.direct.grid)
entry = iRay.getEntry(0)
hitPt = entry.getSurfacePoint(entry.getFromNodePath())
iRay.collisionNodePath.removeNode()
del iRay
if hasattr(state, 'prevPt'):
base.direct.camera.setPos(base.direct.camera, (state.prevPt - hitPt))
state.prevPt = hitPt
return Task.cont
[docs] def HPanYZoomTask(self, state):
# If the cam is orthogonal, don't rotate or zoom.
if (hasattr(base.direct.cam.node(), "getLens") and
base.direct.cam.node().getLens().__class__.__name__ == "OrthographicLens"):
return
if base.direct.fControl:
moveDir = Vec3(self.coaMarker.getPos(base.direct.camera))
# If marker is behind camera invert vector
if moveDir[1] < 0.0:
moveDir.assign(moveDir * -1)
moveDir.normalize()
else:
moveDir = Vec3(Y_AXIS)
if self.useMayaCamControls : # use maya controls
moveDir.assign(moveDir * ((base.direct.dr.mouseDeltaX -1.0 * base.direct.dr.mouseDeltaY)
* state.zoomSF))
hVal = 0.0
else:
moveDir.assign(moveDir * (-1.0 * base.direct.dr.mouseDeltaY *
state.zoomSF))
if base.direct.dr.mouseDeltaY > 0.0:
moveDir.setY(moveDir[1] * 1.0)
hVal = 0.5 * base.direct.dr.mouseDeltaX * base.direct.dr.fovH
base.direct.camera.setPosHpr(base.direct.camera,
moveDir[0],
moveDir[1],
moveDir[2],
hVal,
0.0, 0.0)
if self.lockRoll:
# flatten roll
base.direct.camera.setR(0)
return Task.cont
[docs] def OrthoZoomTask(self, state):
filmSize = base.direct.camNode.getLens().getFilmSize()
factor = (base.direct.dr.mouseDeltaX -1.0 * base.direct.dr.mouseDeltaY) * 0.1
x = base.direct.dr.getWidth()
y = base.direct.dr.getHeight()
base.direct.dr.orthoFactor -= factor
if base.direct.dr.orthoFactor < 0:
base.direct.dr.orthoFactor = 0.0001
base.direct.dr.updateFilmSize(x, y)
return Task.cont
[docs] def HPPanTask(self, state):
base.direct.camera.setHpr(base.direct.camera,
(0.5 * base.direct.dr.mouseDeltaX *
base.direct.dr.fovH),
(-0.5 * base.direct.dr.mouseDeltaY *
base.direct.dr.fovV),
0.0)
return Task.cont
[docs] def spawnMouseRotateTask(self):
# Kill any existing tasks
self.__stopManipulateCamera()
if self.perspCollPlane:
iRay = SelectionRay(base.direct.camera)
iRay.collider.setFromLens(base.direct.camNode, 0.0, 0.0)
iRay.collideWithBitMask(1)
if base.direct.camera.getPos().getZ() >=0:
iRay.ct.traverse(self.perspCollPlane)
else:
iRay.ct.traverse(self.perspCollPlane2)
if iRay.getNumEntries() > 0:
entry = iRay.getEntry(0)
hitPt = entry.getSurfacePoint(entry.getFromNodePath())
# create a temp nodePath to get the position
np = NodePath('temp')
np.setPos(base.direct.camera, hitPt)
self.coaMarkerPos = np.getPos()
np.removeNode()
self.coaMarker.setPos(self.coaMarkerPos)
iRay.collisionNodePath.removeNode()
del iRay
# Set at markers position in render coordinates
self.camManipRef.setPos(self.coaMarkerPos)
self.camManipRef.setHpr(base.direct.camera, ZERO_POINT)
t = Task.Task(self.mouseRotateTask)
if abs(base.direct.dr.mouseX) > 0.9:
t.constrainedDir = 'y'
else:
t.constrainedDir = 'x'
self.__startManipulateCamera(task = t)
[docs] def mouseRotateTask(self, state):
# If the cam is orthogonal, don't rotate.
if (hasattr(base.direct.cam.node(), "getLens") and
base.direct.cam.node().getLens().__class__.__name__ == "OrthographicLens"):
return
# If moving outside of center, ignore motion perpendicular to edge
if ((state.constrainedDir == 'y') and (abs(base.direct.dr.mouseX) > 0.9)):
deltaX = 0
deltaY = base.direct.dr.mouseDeltaY
elif ((state.constrainedDir == 'x') and (abs(base.direct.dr.mouseY) > 0.9)):
deltaX = base.direct.dr.mouseDeltaX
deltaY = 0
else:
deltaX = base.direct.dr.mouseDeltaX
deltaY = base.direct.dr.mouseDeltaY
if base.direct.fShift:
base.direct.camera.setHpr(base.direct.camera,
(deltaX * base.direct.dr.fovH),
(-deltaY * base.direct.dr.fovV),
0.0)
if self.lockRoll:
# flatten roll
base.direct.camera.setR(0)
self.camManipRef.setPos(self.coaMarkerPos)
self.camManipRef.setHpr(base.direct.camera, ZERO_POINT)
else:
if base.direct.camera.getPos().getZ() >=0 or not self.switchDirBelowZero:
dirX = -1
else:
dirX = 1
wrt = base.direct.camera.getTransform(self.camManipRef)
self.camManipRef.setHpr(self.camManipRef,
(dirX * deltaX * 180.0),
(deltaY * 180.0),
0.0)
if self.lockRoll:
# flatten roll
self.camManipRef.setR(0)
base.direct.camera.setTransform(self.camManipRef, wrt)
return Task.cont
[docs] def spawnMouseRollTask(self):
# Kill any existing tasks
self.__stopManipulateCamera()
# Set at markers position in render coordinates
self.camManipRef.setPos(self.coaMarkerPos)
self.camManipRef.setHpr(base.direct.camera, ZERO_POINT)
t = Task.Task(self.mouseRollTask)
t.coaCenter = getScreenXY(self.coaMarker)
t.lastAngle = getCrankAngle(t.coaCenter)
# Store the camera/manipRef offset transform
t.wrt = base.direct.camera.getTransform(self.camManipRef)
self.__startManipulateCamera(task = t)
[docs] def mouseRollTask(self, state):
wrt = state.wrt
angle = getCrankAngle(state.coaCenter)
deltaAngle = angle - state.lastAngle
state.lastAngle = angle
self.camManipRef.setHpr(self.camManipRef, 0, 0, deltaAngle)
if self.lockRoll:
# flatten roll
self.camManipRef.setR(0)
base.direct.camera.setTransform(self.camManipRef, wrt)
return Task.cont
[docs] def lockCOA(self):
self.fLockCOA = 1
base.direct.message('COA Lock On')
[docs] def unlockCOA(self):
self.fLockCOA = 0
base.direct.message('COA Lock Off')
[docs] def toggleCOALock(self):
self.fLockCOA = 1 - self.fLockCOA
if self.fLockCOA:
base.direct.message('COA Lock On')
else:
base.direct.message('COA Lock Off')
[docs] def pickNextCOA(self):
""" Cycle through collision handler entries """
if self.cqEntries:
# Get next entry and rotate entries
entry = self.cqEntries[0]
self.cqEntries = self.cqEntries[1:] + self.cqEntries[:1]
# Filter out object's under camera
nodePath = entry.getIntoNodePath()
if base.direct.camera not in nodePath.getAncestors():
# Compute new hit point
hitPt = entry.getSurfacePoint(entry.getFromNodePath())
# Move coa marker to new point
self.updateCoa(hitPt, ref = self.coaMarkerRef)
else:
# Remove offending entry
self.cqEntries = self.cqEntries[:-1]
self.pickNextCOA()
[docs] def computeCOA(self, entry):
coa = Point3(0)
dr = base.direct.drList.getCurrentDr()
if self.fLockCOA:
# COA is locked, use existing point
# Use existing point
coa.assign(self.coaMarker.getPos(base.direct.camera))
# Reset hit point count
self.nullHitPointCount = 0
elif entry:
# Got a hit point (hit point is in camera coordinates)
# Set center of action
hitPt = entry.getSurfacePoint(entry.getFromNodePath())
hitPtDist = Vec3(hitPt).length()
coa.assign(hitPt)
# Handle case of bad coa point (too close or too far)
if ((hitPtDist < (1.1 * dr.near)) or
(hitPtDist > dr.far)):
# Just use existing point
coa.assign(self.coaMarker.getPos(base.direct.camera))
# Reset hit point count
self.nullHitPointCount = 0
else:
# Increment null hit point count
self.nullHitPointCount = (self.nullHitPointCount + 1) % 7
# No COA lock and no intersection point
# Use a point out in front of camera
# Distance to point increases on multiple null hit points
# MRM: Would be nice to be able to control this
# At least display it
dist = pow(10.0, self.nullHitPointCount)
base.direct.message('COA Distance: ' + repr(dist))
coa.set(0, dist, 0)
# Compute COA Dist
coaDist = Vec3(coa - ZERO_POINT).length()
if coaDist < (1.1 * dr.near):
coa.set(0, 100, 0)
coaDist = 100
# Update coa and marker
self.updateCoa(coa, coaDist = coaDist)
[docs] def updateCoa(self, ref2point, coaDist = None, ref = None):
self.coa.set(ref2point[0], ref2point[1], ref2point[2])
if not coaDist:
coaDist = Vec3(self.coa - ZERO_POINT).length()
# Place the marker in render space
if ref is None:
# KEH: use the current display region
# ref = base.cam
ref = base.direct.drList.getCurrentDr().cam
self.coaMarker.setPos(ref, self.coa)
pos = self.coaMarker.getPos()
self.coaMarker.setPosHprScale(pos, Vec3(0), Vec3(1))
# Resize it
self.updateCoaMarkerSize(coaDist)
# Record marker pos in render space
self.coaMarkerPos.assign(self.coaMarker.getPos())
[docs] def updateCoaMarkerSizeOnDeath(self):
# Needed because tasks pass in state as first arg
self.updateCoaMarkerSize()
[docs] def updateCoaMarkerSize(self, coaDist = None):
if not coaDist:
coaDist = Vec3(self.coaMarker.getPos(base.direct.camera)).length()
# Nominal size based on default 30 degree vertical FOV
# Need to adjust size based on distance and current FOV
sf = COA_MARKER_SF * coaDist * (base.direct.drList.getCurrentDr().fovV/30.0)
if sf == 0.0:
sf = 0.1
self.coaMarker.setScale(sf)
# Lerp color to fade out
if self.coaMarkerColorIval:
self.coaMarkerColorIval.finish()
self.coaMarkerColorIval = Sequence(
Func(self.coaMarker.unstash),
self.coaMarker.colorInterval(1.5, Vec4(1, 0, 0, 0),
startColor = Vec4(1, 0, 0, 1),
blendType = 'easeInOut'),
Func(self.coaMarker.stash)
)
self.coaMarkerColorIval.start()
[docs] def homeCam(self):
# Record undo point
base.direct.pushUndo([base.direct.camera])
base.direct.camera.reparentTo(render)
base.direct.camera.clearMat()
# Resize coa marker
self.updateCoaMarkerSize()
[docs] def uprightCam(self):
self.__stopManipulateCamera()
# Record undo point
base.direct.pushUndo([base.direct.camera])
# Pitch camera till upright
currH = base.direct.camera.getH()
ival = base.direct.camera.hprInterval(CAM_MOVE_DURATION,
(currH, 0, 0),
other = render,
blendType = 'easeInOut',
name = 'manipulateCamera')
self.__startManipulateCamera(ival = ival)
[docs] def orbitUprightCam(self):
self.__stopManipulateCamera()
# Record undo point
base.direct.pushUndo([base.direct.camera])
# Transform camera z axis to render space
mCam2Render = Mat4(Mat4.identMat()) # [gjeon] fixed to give required argument
mCam2Render.assign(base.direct.camera.getMat(render))
zAxis = Vec3(mCam2Render.xformVec(Z_AXIS))
zAxis.normalize()
# Compute rotation angle needed to upright cam
orbitAngle = rad2Deg(math.acos(CLAMP(zAxis.dot(Z_AXIS), -1, 1)))
# Check angle
if orbitAngle < 0.1:
# Already upright
return
# Compute orthogonal axis of rotation
rotAxis = Vec3(zAxis.cross(Z_AXIS))
rotAxis.normalize()
# Find angle between rot Axis and render X_AXIS
rotAngle = rad2Deg(math.acos(CLAMP(rotAxis.dot(X_AXIS), -1, 1)))
# Determine sign or rotation angle
if rotAxis[1] < 0:
rotAngle *= -1
# Position ref CS at coa marker with xaxis aligned with rot axis
self.camManipRef.setPos(self.coaMarker, Vec3(0))
self.camManipRef.setHpr(render, rotAngle, 0, 0)
# Reparent Cam to ref Coordinate system
parent = base.direct.camera.getParent()
base.direct.camera.wrtReparentTo(self.camManipRef)
# Rotate ref CS to final orientation
ival = self.camManipRef.hprInterval(CAM_MOVE_DURATION,
(rotAngle, orbitAngle, 0),
other = render,
blendType = 'easeInOut')
ival = Sequence(ival, Func(self.reparentCam, parent),
name = 'manipulateCamera')
self.__startManipulateCamera(ival = ival)
[docs] def centerCam(self):
self.centerCamIn(1.0)
[docs] def centerCamNow(self):
self.centerCamIn(0.)
[docs] def centerCamIn(self, t):
self.__stopManipulateCamera()
# Record undo point
base.direct.pushUndo([base.direct.camera])
# Determine marker location
markerToCam = self.coaMarker.getPos(base.direct.camera)
dist = Vec3(markerToCam - ZERO_POINT).length()
scaledCenterVec = Y_AXIS * dist
delta = markerToCam - scaledCenterVec
self.camManipRef.setPosHpr(base.direct.camera, Point3(0), Point3(0))
ival = base.direct.camera.posInterval(CAM_MOVE_DURATION,
Point3(delta),
other = self.camManipRef,
blendType = 'easeInOut')
ival = Sequence(ival, Func(self.updateCoaMarkerSizeOnDeath),
name = 'manipulateCamera')
self.__startManipulateCamera(ival = ival)
[docs] def zoomCam(self, zoomFactor, t):
self.__stopManipulateCamera()
# Record undo point
base.direct.pushUndo([base.direct.camera])
# Find a point zoom factor times the current separation
# of the widget and cam
zoomPtToCam = self.coaMarker.getPos(base.direct.camera) * zoomFactor
# Put a target nodePath there
self.camManipRef.setPos(base.direct.camera, zoomPtToCam)
# Move to that point
ival = base.direct.camera.posInterval(CAM_MOVE_DURATION,
ZERO_POINT,
other = self.camManipRef,
blendType = 'easeInOut')
ival = Sequence(ival, Func(self.updateCoaMarkerSizeOnDeath),
name = 'manipulateCamera')
self.__startManipulateCamera(ival = ival)
[docs] def spawnMoveToView(self, view):
# Kill any existing tasks
self.__stopManipulateCamera()
# Record undo point
base.direct.pushUndo([base.direct.camera])
# Calc hprOffset
hprOffset = VBase3()
if view == 8:
# Try the next roll angle
self.orthoViewRoll = (self.orthoViewRoll + 90.0) % 360.0
# but use the last view
view = self.lastView
else:
self.orthoViewRoll = 0.0
# Adjust offset based on specified view
if view == 1:
hprOffset.set(180., 0., 0.)
elif view == 2:
hprOffset.set(0., 0., 0.)
elif view == 3:
hprOffset.set(90., 0., 0.)
elif view == 4:
hprOffset.set(-90., 0., 0.)
elif view == 5:
hprOffset.set(0., -90., 0.)
elif view == 6:
hprOffset.set(0., 90., 0.)
elif view == 7:
hprOffset.set(135., -35.264, 0.)
# Position target
self.camManipRef.setPosHpr(self.coaMarker, ZERO_VEC,
hprOffset)
# Scale center vec by current distance to target
offsetDistance = Vec3(base.direct.camera.getPos(self.camManipRef) -
ZERO_POINT).length()
scaledCenterVec = Y_AXIS * (-1.0 * offsetDistance)
# Now put the camManipRef at that point
self.camManipRef.setPosHpr(self.camManipRef,
scaledCenterVec,
ZERO_VEC)
# Record view for next time around
self.lastView = view
ival = base.direct.camera.posHprInterval(CAM_MOVE_DURATION,
pos = ZERO_POINT,
hpr = VBase3(0, 0, self.orthoViewRoll),
other = self.camManipRef,
blendType = 'easeInOut')
ival = Sequence(ival, Func(self.updateCoaMarkerSizeOnDeath),
name = 'manipulateCamera')
self.__startManipulateCamera(ival = ival)
[docs] def reparentCam(self, parent):
base.direct.camera.wrtReparentTo(parent)
self.updateCoaMarkerSize()
[docs] def moveToFit(self):
# How big is the active widget?
widgetScale = base.direct.widget.scalingNode.getScale(render)
maxScale = max(widgetScale[0], widgetScale[1], widgetScale[2])
# At what distance does the widget fill 50% of the screen?
camY = ((2 * base.direct.dr.near * (1.5 * maxScale)) /
min(base.direct.dr.nearWidth, base.direct.dr.nearHeight))
# Find a point this distance along the Y axis
# MRM: This needs to be generalized to support non uniform frusta
centerVec = Y_AXIS * camY
# Before moving, record the relationship between the selected nodes
# and the widget, so that this can be maintained
base.direct.selected.getWrtAll()
# Push state onto undo stack
base.direct.pushUndo(base.direct.selected)
# Remove the task to keep the widget attached to the object
taskMgr.remove('followSelectedNodePath')
# Spawn a task to keep the selected objects with the widget
taskMgr.add(self.stickToWidgetTask, 'stickToWidget')
# Spawn a task to move the widget
ival = base.direct.widget.posInterval(CAM_MOVE_DURATION,
Point3(centerVec),
other = base.direct.camera,
blendType = 'easeInOut')
ival = Sequence(ival, Func(lambda: taskMgr.remove('stickToWidget')),
name = 'moveToFit')
ival.start()
[docs] def enableMouseFly(self, fKeyEvents = 1):
# disable C++ fly interface
base.disableMouse()
# Enable events
for event in self.actionEvents:
self.accept(event[0], event[1], extraArgs = event[2:])
if fKeyEvents:
for event in self.keyEvents:
self.accept(event[0], event[1], extraArgs = event[2:])
# Show marker
self.coaMarker.reparentTo(base.direct.group)
[docs] def disableMouseFly(self):
# Hide the marker
self.coaMarker.reparentTo(hidden)
# Ignore events
for event in self.actionEvents:
self.ignore(event[0])
for event in self.keyEvents:
self.ignore(event[0])
# Kill tasks
self.removeManipulateCameraTask()
taskMgr.remove('stickToWidget')
base.enableMouse()
[docs] def removeManipulateCameraTask(self):
self.__stopManipulateCamera()
