/
CameraPrototypes.py
2186 lines (1921 loc) · 71.6 KB
/
CameraPrototypes.py
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print('<!--')
import x3d
print('-->')
X3D0 = x3d.X3D()
X3D0.profile = "Immersive"
X3D0.version = "3.2"
head1 = x3d.head()
meta2 = x3d.meta()
meta2.name = "title"
meta2.content = "CameraPrototypes.x3d"
head1.children.append(meta2)
meta3 = x3d.meta()
meta3.name = "description"
meta3.content = "Camera, CameraShot and CameraMovement prototypes that demonstrate storyboard capabilities and precise camera operation. This is a developmental effort for potential X3D Specification improvement."
head1.children.append(meta3)
meta4 = x3d.meta()
meta4.name = "creator"
meta4.content = "Don Brutzman and Jeff Weekley"
head1.children.append(meta4)
meta5 = x3d.meta()
meta5.name = "created"
meta5.content = "16 March 2009"
head1.children.append(meta5)
meta6 = x3d.meta()
meta6.name = "modified"
meta6.content = "25 October 2016"
head1.children.append(meta6)
meta7 = x3d.meta()
meta7.name = "TODO"
meta7.content = "Schematron rules, backed up by initialize() checks"
head1.children.append(meta7)
meta8 = x3d.meta()
meta8.name = "reference"
meta8.content = "BeyondViewpointCameraNodesWeb3D2009.pdf"
head1.children.append(meta8)
meta9 = x3d.meta()
meta9.name = "reference"
meta9.content = "https://www.web3d.org/x3d/specifications/ISO-IEC-FDIS-19775-1.2-X3D-AbstractSpecification/Part01/components/navigation.html"
head1.children.append(meta9)
meta10 = x3d.meta()
meta10.name = "subject"
meta10.content = "Camera nodes for Viewpoint navigation control"
head1.children.append(meta10)
meta11 = x3d.meta()
meta11.name = "reference"
meta11.content = "CameraExamples.x3d"
head1.children.append(meta11)
meta12 = x3d.meta()
meta12.name = "identifier"
meta12.content = "https://www.web3d.org/x3d/content/examples/Basic/development/CameraPrototypes.x3d"
head1.children.append(meta12)
meta13 = x3d.meta()
meta13.name = "reference"
meta13.content = "http://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/x3d/content/examples/Basic/development/CameraPrototypes.x3d"
head1.children.append(meta13)
meta14 = x3d.meta()
meta14.name = "generator"
meta14.content = "X3D-Edit 3.3, https://savage.nps.edu/X3D-Edit"
head1.children.append(meta14)
meta15 = x3d.meta()
meta15.name = "license"
meta15.content = "../license.html"
head1.children.append(meta15)
X3D0.head = head1
Scene16 = x3d.Scene()
#=============== Camera ==============
ProtoDeclare17 = x3d.ProtoDeclare()
ProtoDeclare17.name = "Camera"
ProtoDeclare17.appinfo = "Camera node provides direct control of scene view to enable cinematic camera animation shot by shot and move by move along with still digital-photography settings for offline rendering of camera images."
ProtoInterface18 = x3d.ProtoInterface()
#Viewpoint-related fields, NavigationInfo-related fields and Camera-unique fields
field19 = x3d.field()
field19.name = "description"
field19.accessType = "inputOutput"
field19.appinfo = "Text description to be displayed for this Camera"
field19.type = "SFString"
ProtoInterface18.field.append(field19)
field20 = x3d.field()
field20.name = "position"
field20.accessType = "inputOutput"
field20.appinfo = "Camera position in local transformation frame, which is default prior to first CameraShot initialPosition getting activated"
field20.type = "SFVec3f"
field20.value = [0,0,10]
ProtoInterface18.field.append(field20)
field21 = x3d.field()
field21.name = "orientation"
field21.accessType = "inputOutput"
field21.appinfo = "Camera rotation in local transformation frame, which is default prior to first CameraShot initialPosition getting activated"
field21.type = "SFRotation"
field21.value = [0,0,1,0]
ProtoInterface18.field.append(field21)
field22 = x3d.field()
field22.name = "fieldOfView"
field22.accessType = "inputOutput"
field22.appinfo = "pi/4"
field22.type = "SFFloat"
field22.value = 0.7854
ProtoInterface18.field.append(field22)
field23 = x3d.field()
field23.name = "set_fraction"
field23.accessType = "inputOnly"
field23.appinfo = "input fraction drives interpolators"
field23.type = "SFFloat"
ProtoInterface18.field.append(field23)
field24 = x3d.field()
field24.name = "set_bind"
field24.accessType = "inputOnly"
field24.appinfo = "input event binds or unbinds this Camera"
field24.type = "SFBool"
ProtoInterface18.field.append(field24)
field25 = x3d.field()
field25.name = "bindTime"
field25.accessType = "outputOnly"
field25.appinfo = "output event indicates when this Camera is bound"
field25.type = "SFTime"
ProtoInterface18.field.append(field25)
field26 = x3d.field()
field26.name = "isBound"
field26.accessType = "outputOnly"
field26.appinfo = "output event indicates whether this Camera is bound or unbound"
field26.type = "SFBool"
ProtoInterface18.field.append(field26)
field27 = x3d.field()
field27.name = "nearClipPlane"
field27.accessType = "inputOutput"
field27.appinfo = "Vector distance to near clipping plane corresponds to NavigationInfo.avatarSize[0]"
field27.type = "SFFloat"
field27.value = 0.25
ProtoInterface18.field.append(field27)
field28 = x3d.field()
field28.name = "farClipPlane"
field28.accessType = "inputOutput"
field28.appinfo = "Vector distance to far clipping plane corresponds to NavigationInfo.visibilityLimit"
field28.type = "SFFloat"
field28.value = 0
ProtoInterface18.field.append(field28)
field29 = x3d.field()
field29.name = "shots"
field29.accessType = "inputOutput"
field29.appinfo = "Array of CameraShot nodes which in turn contain CameraMovement nodes"
field29.type = "MFNode"
#initialization nodes (if any) go here
ProtoInterface18.field.append(field29)
field30 = x3d.field()
field30.name = "headlight"
field30.accessType = "inputOutput"
field30.appinfo = "Whether camera headlight is on or off"
field30.type = "SFBool"
field30.value = True
ProtoInterface18.field.append(field30)
field31 = x3d.field()
field31.name = "headlightColor"
field31.accessType = "inputOutput"
field31.appinfo = "Camera headlight color"
field31.type = "SFColor"
field31.value = [1,1,1]
ProtoInterface18.field.append(field31)
field32 = x3d.field()
field32.name = "headlightIntensity"
field32.accessType = "inputOutput"
field32.appinfo = "Camera headlight intensity"
field32.type = "SFFloat"
field32.value = 1
ProtoInterface18.field.append(field32)
field33 = x3d.field()
field33.name = "filterColor"
field33.accessType = "inputOutput"
field33.appinfo = "Camera filter color that modifies virtual lens capture"
field33.type = "SFColor"
field33.value = [1,1,1]
ProtoInterface18.field.append(field33)
field34 = x3d.field()
field34.name = "filterTransparency"
field34.accessType = "inputOutput"
field34.appinfo = "Camera filter transparency that modifies virtual lens capture"
field34.type = "SFFloat"
field34.value = 1
ProtoInterface18.field.append(field34)
field35 = x3d.field()
field35.name = "upVector"
field35.accessType = "inputOutput"
field35.appinfo = "upVector changes modify camera orientation (and possibly vice versa)"
field35.type = "SFVec3f"
field35.value = [0,1,0]
ProtoInterface18.field.append(field35)
field36 = x3d.field()
field36.name = "fStop"
field36.accessType = "inputOutput"
field36.appinfo = "Focal length divided effective aperture diameter indicating width of focal plane"
field36.type = "SFFloat"
field36.value = 5.6
ProtoInterface18.field.append(field36)
field37 = x3d.field()
field37.name = "focusDistance"
field37.accessType = "inputOutput"
field37.appinfo = "Distance to focal plane of sharpest focus"
field37.type = "SFFloat"
field37.value = 10
ProtoInterface18.field.append(field37)
field38 = x3d.field()
field38.name = "isActive"
field38.accessType = "outputOnly"
field38.appinfo = "Mark start/stop with true/false output respectively useful to trigger external animations"
field38.type = "SFBool"
ProtoInterface18.field.append(field38)
field39 = x3d.field()
field39.name = "totalDuration"
field39.accessType = "outputOnly"
field39.appinfo = "Total duration of contained enabled CameraShot (and thus CameraMovement) move durations"
field39.type = "SFTime"
ProtoInterface18.field.append(field39)
field40 = x3d.field()
field40.name = "offlineRender"
field40.accessType = "inputOutput"
field40.appinfo = "OfflineRender node"
field40.type = "SFNode"
#initialization node (if any) goes here
ProtoInterface18.field.append(field40)
field41 = x3d.field()
field41.name = "traceEnabled"
field41.accessType = "initializeOnly"
field41.appinfo = "enable console output to trace script computations and prototype progress"
field41.type = "SFBool"
field41.value = False
ProtoInterface18.field.append(field41)
ProtoDeclare17.ProtoInterface = ProtoInterface18
ProtoBody42 = x3d.ProtoBody()
Viewpoint43 = x3d.Viewpoint()
Viewpoint43.DEF = "CameraViewpoint"
IS44 = x3d.IS()
connect45 = x3d.connect()
connect45.nodeField = "description"
connect45.protoField = "description"
IS44.connect.append(connect45)
connect46 = x3d.connect()
connect46.nodeField = "position"
connect46.protoField = "position"
IS44.connect.append(connect46)
connect47 = x3d.connect()
connect47.nodeField = "orientation"
connect47.protoField = "orientation"
IS44.connect.append(connect47)
connect48 = x3d.connect()
connect48.nodeField = "fieldOfView"
connect48.protoField = "fieldOfView"
IS44.connect.append(connect48)
connect49 = x3d.connect()
connect49.nodeField = "set_bind"
connect49.protoField = "set_bind"
IS44.connect.append(connect49)
connect50 = x3d.connect()
connect50.nodeField = "bindTime"
connect50.protoField = "bindTime"
IS44.connect.append(connect50)
connect51 = x3d.connect()
connect51.nodeField = "isBound"
connect51.protoField = "isBound"
IS44.connect.append(connect51)
Viewpoint43.IS = IS44
ProtoBody42.children.append(Viewpoint43)
#NavInfo EXAMINE used since some browsers (InstantReality) try to lock view to vertical when flying to avoid disorientation
NavigationInfo52 = x3d.NavigationInfo()
NavigationInfo52.DEF = "CameraNavInfo"
NavigationInfo52.type = ["EXAMINE","FLY","ANY"]
IS53 = x3d.IS()
connect54 = x3d.connect()
connect54.nodeField = "set_bind"
connect54.protoField = "set_bind"
IS53.connect.append(connect54)
connect55 = x3d.connect()
connect55.nodeField = "headlight"
connect55.protoField = "headlight"
IS53.connect.append(connect55)
connect56 = x3d.connect()
connect56.nodeField = "visibilityLimit"
connect56.protoField = "farClipPlane"
IS53.connect.append(connect56)
#No need to bind outputs bindTime, isBound from NavigationInfo since Viewpoint outputs will suffice. TODO inform BitManagement that bindTime field is missing.
NavigationInfo52.IS = IS53
ProtoBody42.children.append(NavigationInfo52)
#this DirectionalLight replaces NavigationInfo headlight in order to add color capability
DirectionalLight57 = x3d.DirectionalLight()
DirectionalLight57.DEF = "CameraDirectionalLight"
DirectionalLight57.global = True
#TODO confirm other default field values match NavigationInfo spec
IS58 = x3d.IS()
connect59 = x3d.connect()
connect59.nodeField = "on"
connect59.protoField = "headlight"
IS58.connect.append(connect59)
connect60 = x3d.connect()
connect60.nodeField = "color"
connect60.protoField = "headlightColor"
IS58.connect.append(connect60)
connect61 = x3d.connect()
connect61.nodeField = "intensity"
connect61.protoField = "headlightIntensity"
IS58.connect.append(connect61)
DirectionalLight57.IS = IS58
ProtoBody42.children.append(DirectionalLight57)
PositionInterpolator62 = x3d.PositionInterpolator()
PositionInterpolator62.DEF = "CameraPositionInterpolator"
PositionInterpolator62.key = [0,1]
IS63 = x3d.IS()
connect64 = x3d.connect()
connect64.nodeField = "set_fraction"
connect64.protoField = "set_fraction"
IS63.connect.append(connect64)
PositionInterpolator62.IS = IS63
ProtoBody42.children.append(PositionInterpolator62)
OrientationInterpolator65 = x3d.OrientationInterpolator()
OrientationInterpolator65.DEF = "CameraOrientationInterpolator"
OrientationInterpolator65.key = [0,1]
IS66 = x3d.IS()
connect67 = x3d.connect()
connect67.nodeField = "set_fraction"
connect67.protoField = "set_fraction"
IS66.connect.append(connect67)
OrientationInterpolator65.IS = IS66
ProtoBody42.children.append(OrientationInterpolator65)
ROUTE68 = x3d.ROUTE()
ROUTE68.fromField = "value_changed"
ROUTE68.fromNode = "CameraPositionInterpolator"
ROUTE68.toField = "position"
ROUTE68.toNode = "CameraViewpoint"
ProtoBody42.children.append(ROUTE68)
ROUTE69 = x3d.ROUTE()
ROUTE69.fromField = "value_changed"
ROUTE69.fromNode = "CameraOrientationInterpolator"
ROUTE69.toField = "orientation"
ROUTE69.toNode = "CameraViewpoint"
ProtoBody42.children.append(ROUTE69)
Script70 = x3d.Script()
Script70.DEF = "CameraScript"
Script70.directOutput = True
Script70.mustEvaluate = True
#binding is controlled externally, all camera operations proceed the same regardless of whether bound or not
field71 = x3d.field()
field71.name = "description"
field71.accessType = "inputOutput"
field71.appinfo = "Text description to be displayed for this Camera"
field71.type = "SFString"
Script70.field.append(field71)
field72 = x3d.field()
field72.name = "position"
field72.accessType = "inputOutput"
field72.appinfo = "Camera position in local transformation frame"
field72.type = "SFVec3f"
Script70.field.append(field72)
field73 = x3d.field()
field73.name = "orientation"
field73.accessType = "inputOutput"
field73.appinfo = "Camera rotation in local transformation frame"
field73.type = "SFRotation"
Script70.field.append(field73)
field74 = x3d.field()
field74.name = "set_fraction"
field74.accessType = "inputOnly"
field74.appinfo = "input fraction drives interpolators"
field74.type = "SFFloat"
Script70.field.append(field74)
field75 = x3d.field()
field75.name = "set_bind"
field75.accessType = "inputOnly"
field75.appinfo = "input event binds or unbinds this Camera"
field75.type = "SFBool"
Script70.field.append(field75)
field76 = x3d.field()
field76.name = "fieldOfView"
field76.accessType = "inputOutput"
field76.appinfo = "pi/4"
field76.type = "SFFloat"
Script70.field.append(field76)
field77 = x3d.field()
field77.name = "nearClipPlane"
field77.accessType = "inputOutput"
field77.appinfo = "Vector distance to near clipping plane"
field77.type = "SFFloat"
Script70.field.append(field77)
field78 = x3d.field()
field78.name = "farClipPlane"
field78.accessType = "inputOutput"
field78.appinfo = "Vector distance to far clipping plane"
field78.type = "SFFloat"
Script70.field.append(field78)
field79 = x3d.field()
field79.name = "shots"
field79.accessType = "inputOutput"
field79.appinfo = "Array of CameraShot nodes which in turn contain CameraMovement nodes"
field79.type = "MFNode"
#initialization nodes (if any) go here
Script70.field.append(field79)
field80 = x3d.field()
field80.name = "filterColor"
field80.accessType = "inputOutput"
field80.appinfo = "Camera filter color that modifies virtual lens capture"
field80.type = "SFColor"
Script70.field.append(field80)
field81 = x3d.field()
field81.name = "filterTransparency"
field81.accessType = "inputOutput"
field81.appinfo = "Camera filter transparency that modifies virtual lens capture"
field81.type = "SFFloat"
Script70.field.append(field81)
field82 = x3d.field()
field82.name = "upVector"
field82.accessType = "inputOutput"
field82.appinfo = "upVector changes modify camera orientation (and possibly vice versa)"
field82.type = "SFVec3f"
Script70.field.append(field82)
field83 = x3d.field()
field83.name = "fStop"
field83.accessType = "inputOutput"
field83.appinfo = "Focal length divided effective aperture diameter indicating width of focal plane"
field83.type = "SFFloat"
Script70.field.append(field83)
field84 = x3d.field()
field84.name = "focusDistance"
field84.accessType = "inputOutput"
field84.appinfo = "Distance to focal plane of sharpest focus"
field84.type = "SFFloat"
Script70.field.append(field84)
field85 = x3d.field()
field85.name = "isActive"
field85.accessType = "outputOnly"
field85.appinfo = "Mark start/stop with true/false output respectively useful to trigger external animations"
field85.type = "SFBool"
Script70.field.append(field85)
field86 = x3d.field()
field86.name = "totalDuration"
field86.accessType = "outputOnly"
field86.appinfo = "Total duration of contained enabled CameraShot (and thus CameraMovement) move durations"
field86.type = "SFTime"
Script70.field.append(field86)
field87 = x3d.field()
field87.name = "offlineRender"
field87.accessType = "inputOutput"
field87.appinfo = "OfflineRender node"
field87.type = "SFNode"
#initialization node (if any) goes here
Script70.field.append(field87)
field88 = x3d.field()
field88.name = "ViewpointNode"
field88.accessType = "initializeOnly"
field88.appinfo = "node reference to permit getting setting fields from within Script"
field88.type = "SFNode"
Viewpoint89 = x3d.Viewpoint()
Viewpoint89.USE = "CameraViewpoint"
field88.children.append(Viewpoint89)
Script70.field.append(field88)
field90 = x3d.field()
field90.name = "NavInfoNode"
field90.accessType = "initializeOnly"
field90.appinfo = "node reference to permit getting setting fields from within Script"
field90.type = "SFNode"
NavigationInfo91 = x3d.NavigationInfo()
NavigationInfo91.USE = "CameraNavInfo"
field90.children.append(NavigationInfo91)
Script70.field.append(field90)
field92 = x3d.field()
field92.name = "CameraPI"
field92.accessType = "initializeOnly"
field92.appinfo = "node reference to permit getting setting fields from within Script"
field92.type = "SFNode"
PositionInterpolator93 = x3d.PositionInterpolator()
PositionInterpolator93.USE = "CameraPositionInterpolator"
field92.children.append(PositionInterpolator93)
Script70.field.append(field92)
field94 = x3d.field()
field94.name = "CameraOI"
field94.accessType = "initializeOnly"
field94.appinfo = "node reference to permit getting setting fields from within Script"
field94.type = "SFNode"
OrientationInterpolator95 = x3d.OrientationInterpolator()
OrientationInterpolator95.USE = "CameraOrientationInterpolator"
field94.children.append(OrientationInterpolator95)
Script70.field.append(field94)
field96 = x3d.field()
field96.name = "key"
field96.accessType = "inputOutput"
field96.appinfo = "key array for interpolators"
field96.type = "MFFloat"
Script70.field.append(field96)
field97 = x3d.field()
field97.name = "keyValuePosition"
field97.accessType = "inputOutput"
field97.appinfo = "keyValue array for PositionInterpolator"
field97.type = "MFVec3f"
Script70.field.append(field97)
field98 = x3d.field()
field98.name = "keyValueOrientation"
field98.accessType = "inputOutput"
field98.appinfo = "keyValue array for OrientationInterpolator"
field98.type = "MFRotation"
Script70.field.append(field98)
field99 = x3d.field()
field99.name = "animated"
field99.accessType = "inputOutput"
field99.appinfo = "whether internal CameraShot and CameraMove nodes are tracking or changed via ROUTE events"
field99.type = "SFBool"
field99.value = False
Script70.field.append(field99)
field100 = x3d.field()
field100.name = "initialized"
field100.accessType = "initializeOnly"
field100.appinfo = "perform checkShots() function once immediately after initialization"
field100.type = "SFBool"
field100.value = False
Script70.field.append(field100)
field101 = x3d.field()
field101.name = "shotCount"
field101.accessType = "initializeOnly"
field101.appinfo = "how many CameraShot nodes are contained in shots array"
field101.type = "SFInt32"
field101.value = 0
Script70.field.append(field101)
field102 = x3d.field()
field102.name = "movesCount"
field102.accessType = "initializeOnly"
field102.appinfo = "how many CameraMove nodes are contained in moves array"
field102.type = "SFInt32"
field102.value = 0
Script70.field.append(field102)
field103 = x3d.field()
field103.name = "frameCount"
field103.accessType = "initializeOnly"
field103.appinfo = "how many frames were created in current loop"
field103.type = "SFFloat"
field103.value = 0
Script70.field.append(field103)
field104 = x3d.field()
field104.name = "startTime"
field104.accessType = "initializeOnly"
field104.appinfo = "holding variable"
field104.type = "SFTime"
field104.value = 0
Script70.field.append(field104)
field105 = x3d.field()
field105.name = "priorTraceTime"
field105.accessType = "initializeOnly"
field105.appinfo = "holding variable"
field105.type = "SFTime"
field105.value = 0
Script70.field.append(field105)
field106 = x3d.field()
field106.name = "traceEnabled"
field106.accessType = "initializeOnly"
field106.appinfo = "enable console output to trace script computations and prototype progress"
field106.type = "SFBool"
Script70.field.append(field106)
IS107 = x3d.IS()
connect108 = x3d.connect()
connect108.nodeField = "description"
connect108.protoField = "description"
IS107.connect.append(connect108)
connect109 = x3d.connect()
connect109.nodeField = "position"
connect109.protoField = "position"
IS107.connect.append(connect109)
connect110 = x3d.connect()
connect110.nodeField = "orientation"
connect110.protoField = "orientation"
IS107.connect.append(connect110)
connect111 = x3d.connect()
connect111.nodeField = "set_fraction"
connect111.protoField = "set_fraction"
IS107.connect.append(connect111)
connect112 = x3d.connect()
connect112.nodeField = "set_bind"
connect112.protoField = "set_bind"
IS107.connect.append(connect112)
connect113 = x3d.connect()
connect113.nodeField = "fieldOfView"
connect113.protoField = "fieldOfView"
IS107.connect.append(connect113)
connect114 = x3d.connect()
connect114.nodeField = "nearClipPlane"
connect114.protoField = "nearClipPlane"
IS107.connect.append(connect114)
connect115 = x3d.connect()
connect115.nodeField = "farClipPlane"
connect115.protoField = "farClipPlane"
IS107.connect.append(connect115)
connect116 = x3d.connect()
connect116.nodeField = "shots"
connect116.protoField = "shots"
IS107.connect.append(connect116)
connect117 = x3d.connect()
connect117.nodeField = "filterColor"
connect117.protoField = "filterColor"
IS107.connect.append(connect117)
connect118 = x3d.connect()
connect118.nodeField = "filterTransparency"
connect118.protoField = "filterTransparency"
IS107.connect.append(connect118)
connect119 = x3d.connect()
connect119.nodeField = "upVector"
connect119.protoField = "upVector"
IS107.connect.append(connect119)
connect120 = x3d.connect()
connect120.nodeField = "fStop"
connect120.protoField = "fStop"
IS107.connect.append(connect120)
connect121 = x3d.connect()
connect121.nodeField = "focusDistance"
connect121.protoField = "focusDistance"
IS107.connect.append(connect121)
connect122 = x3d.connect()
connect122.nodeField = "isActive"
connect122.protoField = "isActive"
IS107.connect.append(connect122)
connect123 = x3d.connect()
connect123.nodeField = "totalDuration"
connect123.protoField = "totalDuration"
IS107.connect.append(connect123)
connect124 = x3d.connect()
connect124.nodeField = "offlineRender"
connect124.protoField = "offlineRender"
IS107.connect.append(connect124)
connect125 = x3d.connect()
connect125.nodeField = "traceEnabled"
connect125.protoField = "traceEnabled"
IS107.connect.append(connect125)
Script70.IS = IS107
Script70.sourceCode = '''ecmascript:\n"+
"function initialize () // CameraScript\n"+
"{\n"+
"// tracePrint ('initialize start...');\n"+
"\n"+
" NavInfoNode.avatarSize[0] = nearClipPlane;\n"+
"\n"+
" // remaining setups deferred to invocation of checkShots() method\n"+
" // thanks to Yvonne Jung Fraunhofer for diagnosing better approach to function initialization\n"+
" alwaysPrint ('initialize complete');\n"+
"}\n"+
"\n"+
"function checkShots (eventValue)\n"+
"{\n"+
" tracePrint ('checkShots() method should only occur after initialize() methods in all other Scripts are complete');\n"+
"\n"+
" // compute totalDuration by summing durations from contained CameraShot and CameraMovement nodes\n"+
" totalDuration= 0;\n"+
" shotCount = shots.length;\n"+
" movesCount = 0;\n"+
" for (i = 0; i < shotCount; i++) // shots index\n"+
" {\n"+
" tracePrint ('shots[' + i + '].moves.length=' + shots[i].moves.length);\n"+
" movesCount += shots[i].moves.length;\n"+
" totalDuration = totalDuration + shots[i].shotDuration;\n"+
" if (shots[i].moves.length == 0)\n"+
" {\n"+
" alwaysPrint ('warning: CameraShot[' + i + '][' + shots[i].description + '] has no contained CameraMove nodes');\n"+
" }\n"+
" }\n"+
" // size checks before proceeding\n"+
" if (shotCount == 0)\n"+
" {\n"+
" alwaysPrint ('warning: no CameraShot nodes found for the shots, nothing to do!');\n"+
" return;\n"+
" }\n"+
" else if (movesCount == 0)\n"+
" {\n"+
" alwaysPrint ('warning: no CameraMove nodes found for the shots, nothing to do!');\n"+
" return;\n"+
" }\n"+
" else if (totalDuration == 0)\n"+
" {\n"+
" alwaysPrint ('warning: totalDuration = 0 seconds, nothing to do!');\n"+
" return;\n"+
" }\n"+
" tracePrint ('number of contained CameraShot nodes=' + shotCount);\n"+
" tracePrint ('number of contained CameraMove nodes=' + movesCount);\n"+
" tracePrint ('totalDuration=' + totalDuration + ' seconds for all shots and moves');\n"+
"\n"+
" // compute interpolators\n"+
" var k = 0; // index for latest key, keyValuePosition, keyValueOrientation\n"+
" for (i = 0; i < shotCount; i++) // shots index\n"+
" {\n"+
" if (i==0) // initial entries\n"+
" {\n"+
" key[0] = 0.0; // no previous move\n"+
" keyValuePosition[0] = shots[i].initialPosition;\n"+
" keyValueOrientation[0] = shots[i].initialOrientation;\n"+
" }\n"+
" else // new shot repositions, reorients camera as clean break from preceding shot/move\n"+
" {\n"+
" key[k+1] = key[k]; // start from end from previous move\n"+
" keyValuePosition[k+1] = shots[i].initialPosition;\n"+
" keyValueOrientation[k+1] = shots[i].initialOrientation;\n"+
" k++;\n"+
" }\n"+
" tracePrint (shots[i].description);\n"+
" tracePrint ('shots[i].moves.length=' + shots[i].moves.length);\n"+
"\n"+
" for (j = 0; j < shots[i].moves.length; j++) // moves index\n"+
" {\n"+
" var durationFloat = shots[i].moves[j].duration; // implicit type conversion from SFTime\n"+
" // durationFloat = new SFFloat (shots[i].moves[j].duration); // explicit type conversion from SFTime\n"+
" // tracePrint ('durationFloat=' + durationFloat);\n"+
" key[k+1] = key[k] + (durationFloat / totalDuration);\n"+
" keyValuePosition[k+1] = shots[i].moves[j].goalPosition;\n"+
" if (!animated)\n"+
" {\n"+
" keyValueOrientation[k+1] = shots[i].moves[j].goalOrientation;\n"+
" }\n"+
" else\n"+
" {\n"+
" // using constructor SFRotation (SFVec3f fromVector, SFVec3f toVector)\n"+
" // see X3D ECMAScript binding Table 7.18 — SFRotation instance creation functions\n"+
"\n"+
" // test if difference vector is zero, if so maintain previous rotation\n"+
" var shotVector = ViewpointNode.position.subtract(shots[i].moves[j].goalAimPoint).normalize();\n"+
" if (shotVector.length() >= 0)\n"+
" {\n"+
" // default view direction is along -Z axis\n"+
" shots[i].moves[j].goalOrientation = new SFRotation (new SFVec3f (0, 0, 1), shotVector);\n"+
" keyValueOrientation[k+1] = shots[i].moves[j].goalOrientation;\n"+
" }\n"+
" else // note (k > 0)\n"+
" {\n"+
" keyValueOrientation[k+1] = keyValueOrientation[k]; // no change\n"+
" }\n"+
"\n"+
" tracePrint ('shots[' + i + '].moves[' + j + '].goalAimPoint=' + shots[i].moves[j].goalAimPoint.toString());\n"+
" tracePrint (' ViewpointNode.position=' + ViewpointNode.position.toString());\n"+
" tracePrint (' shotVector delta=' + ViewpointNode.position.subtract(shots[i].moves[j].goalAimPoint).toString());\n"+
" tracePrint (' shotVector normalize=' + ViewpointNode.position.subtract(shots[i].moves[j].goalAimPoint).normalize().toString());\n"+
" tracePrint (' goalOrientation=' + shots[i].moves[j].goalOrientation.toString());\n"+
" tracePrint (' keyValueOrientation[k+1]=' + keyValueOrientation[k+1].toString() + '\\n');\n"+
" }\n"+
" k++; // update index to match latest key, keyValuePosition, keyValueOrientation\n"+
"\n"+
" // check animated parameter: set true if any of moves are tracking moves\n"+
" if (!animated) animated = shots[i].moves[j].tracking; // once true, remains true\n"+
" // tracePrint ('shots[' + i + '].moves[' + j + '].tracking=' + shots[i].moves[j].tracking + ', animated=' + animated);\n"+
"\n"+
" // intermediate trace\n"+
" tracePrint (' key=' + key);\n"+
" tracePrint (' keyValuePosition=' + keyValuePosition);\n"+
" tracePrint ('keyValueOrientation=' + keyValueOrientation);\n"+
" tracePrint ('- ' + shots[i].moves[j].description);\n"+
" }\n"+
" }\n"+
" tracePrint (' key=' + key);\n"+
" tracePrint (' keyValuePosition=' + keyValuePosition);\n"+
" tracePrint ('keyValueOrientation=' + keyValueOrientation);\n"+
" if (key.length != keyValuePosition.length)\n"+
" {\n"+
" alwaysPrint ('warning: internal error during array construction, ' +\n"+
" 'key.length=' + key.length + ' must equal ' +\n"+
" 'keyValuePosition.length=' + keyValuePosition.length);\n"+
" }\n"+
" if (key.length != keyValueOrientation.length)\n"+
" {\n"+
" alwaysPrint ('warning: internal error during array construction, ' +\n"+
" 'key.length=' + key.length + ' must equal ' +\n"+
" 'keyValueOrientation.length=' + keyValueOrientation.length);\n"+
" }\n"+
" if (key.length != (shotCount + movesCount))\n"+
" {\n"+
" alwaysPrint ('warning: internal error during array construction, ' +\n"+
" 'key.length=' + key.length + ' must equal ' +\n"+
" '(shotCount + movesCount)=' + (shotCount + movesCount));\n"+
" }\n"+
" tracePrint (' animated=' + animated);\n"+
" // set node values\n"+
" CameraPI.key = key;\n"+
" CameraOI.key = key;\n"+
" CameraPI.keyValue = keyValuePosition;\n"+
" CameraOI.keyValue = keyValueOrientation;\n"+
"\n"+
" if (!animated) // output results\n"+
" {\n"+
" tracePrint ('<PositionInterpolator DEF=\\'CameraPositionInterpolator\\' key=\\'' + stripBrackets(CameraPI.key) + '\\' keyValue=\\'' + stripBrackets(CameraPI.keyValue) + '\\'/>');\n"+
" tracePrint ('<OrientationInterpolator DEF=\\'CameraOrientationInterpolator\\' key=\\'' + stripBrackets(CameraOI.key) + '\\' keyValue=\\'' + stripBrackets(CameraOI.keyValue) + '\\'/>');\n"+
" }\n"+
" tracePrint ('checkShots() complete');\n"+
"}\n"+
"\n"+
"function stripBrackets (fieldArray)\n"+
"{\n"+
" // some browsers add brackets to array output strings, this function strips them\n"+
" outputString = '';\n"+
" for (i = 0; i < fieldArray.length; i++)\n"+
" {\n"+
" outputString += fieldArray[i].toString();\n"+
" if (i < fieldArray.length - 1) outputString += ' ';\n"+
" }\n"+
" return outputString;\n"+
"}\n"+
"\n"+
"function set_fraction (eventValue, timestamp) // input event received for inputOnly field\n"+
"{\n"+
" // traceEnabled = false; // for testing purposes\n"+
"\n"+
" // if Camera is being animated, immediately recompute interpolator settings\n"+
" if (animated) checkShots (true);\n"+
"\n"+
" // trace progress on console with reduced output frequency\n"+
" if (frameCount == 0)\n"+
" {\n"+
" alwaysPrint ('Animation loop commencing, timestamp=' + timestamp);\n"+
" startTime = timestamp;\n"+
" priorTraceTime = timestamp;\n"+
" alwaysPrint ('shotClock=' + (timestamp - startTime) + ' seconds, frameCount=' + frameCount + ', fraction=' + eventValue + ', position=' + ViewpointNode.position.toString() + ', orientation=' + ViewpointNode.orientation.toString());\n"+
"\n"+
" if (animated) // output results\n"+
" {\n"+
" // TODO how to report or speed up response? alwaysPrint (' aimPoint=' + aimPoint.toString());\n"+
" tracePrint (' <PositionInterpolator DEF=\\'CameraPositionInterpolator\\' key=\\'' + stripBrackets(CameraPI.key) + '\\' keyValue=\\'' + stripBrackets(CameraPI.keyValue) + '\\'/>');\n"+
" tracePrint (' <OrientationInterpolator DEF=\\'CameraOrientationInterpolator\\' key=\\'' + stripBrackets(CameraOI.key) + '\\' keyValue=\\'' + stripBrackets(CameraOI.keyValue) + '\\'/>');\n"+
" }\n"+
" }\n"+
" else if ((timestamp - priorTraceTime) >= 1.0) // 1 second trace interval\n"+
" {\n"+
" alwaysPrint ('shotClock=' + (timestamp - startTime) + ' seconds, frameCount=' + frameCount + ', fraction=' + eventValue + ', position=' + ViewpointNode.position.toString() + ', orientation=' + ViewpointNode.orientation.toString());\n"+
" priorTraceTime = timestamp;\n"+
"\n"+
" if (animated) // output results\n"+
" {\n"+
" // TODO how to report or speed up response? alwaysPrint (' aimPoint=' + aimPoint.toString());\n"+
" tracePrint (' <PositionInterpolator DEF=\\'CameraPositionInterpolator\\' key=\\'' + stripBrackets(CameraPI.key) + '\\' keyValue=\\'' + stripBrackets(CameraPI.keyValue) + '\\'/>');\n"+
" alwaysPrint (' <OrientationInterpolator DEF=\\'CameraOrientationInterpolator\\' key=\\'' + stripBrackets(CameraOI.key) + '\\' keyValue=\\'' + stripBrackets(CameraOI.keyValue) + '\\'/>');\n"+
" }\n"+
" }\n"+
" if (eventValue == 0)\n"+
" {\n"+
" // note that zero value is not necessarily sent first by TimeSensor, so otherwise ignored\n"+
" frameCount++;\n"+
" }\n"+
" else if (eventValue == 1)\n"+
" {\n"+
" alwaysPrint ('shotClock=' + (timestamp - startTime) + ', frameCount=' + frameCount + ', fraction=' + eventValue + ', position=' + ViewpointNode.position.toString() + ', orientation=' + ViewpointNode.orientation.toString());\n"+
" if (animated) // output results\n"+
" {\n"+
" // TODO how to report or speed up response? alwaysPrint (' aimPoint=' + aimPoint.toString());\n"+
" }\n"+
" alwaysPrint ('Animation loop complete.');\n"+
" // do not unbind the Viewpoint and NavigationInfo nodes, let that be controlled externally\n"+
" }\n"+
" else\n"+
" {\n"+
" frameCount++;\n"+
" }\n"+
"}\n"+
"\n"+
"function set_bind (eventValue) // input event received for inputOnly field\n"+
"{\n"+
" // need to ensure CameraShot nodes are properly initialized\n"+
" if (initialized == false)\n"+
" {\n"+
" checkShots (true);\n"+
" initialized = true;\n"+
" }\n"+
" if (eventValue)\n"+
" {\n"+
" tracePrint ('Camera has been bound');\n"+
" }\n"+
" else\n"+
" {\n"+
" tracePrint ('Camera has been unbound');\n"+
" }\n"+
"}\n"+
"\n"+
"function set_description (eventValue) // input event received for inputOutput field\n"+
"{\n"+
" description = eventValue;\n"+
"}\n"+
"\n"+
"function set_position (eventValue) // input event received for inputOutput field\n"+
"{\n"+
" position = eventValue;\n"+
"}\n"+
"\n"+
"function set_orientation (eventValue) // input event received for inputOutput field\n"+
"{\n"+
" orientation = eventValue;\n"+
"}\n"+