SplashDisplay Member List

This is the complete list of members for SplashDisplay, including all inherited members.

_absolutePlacement	ComponentBase	protected
_alphaMode	DisplayObject	protected
_antiAlias	DisplayObject	protected
_attributesAdded	DisplayObject	protected
_blinking	DisplayObject	protected
_blinkRate	DisplayObject	protected
_clearBitfield	DisplayFrame	protected
_color	DisplayObject	protected
_componentHeaderFileName	DisplayFrame	protected
_cullBackFace	DisplayObject	protected
_cullingEnabled	DisplayFrame	protected
_currentCursor	DisplayFrame	protected
_cursorsDown	DisplayFrame	protected
_dcsMatrix	DisplayObject	protected
_depthTest	DisplayObject	protected
_drawMatrix	DisplayObject	protected
_editorTransformMatrix	ComponentBase	protected
_height	DisplayFrame	protected
_lastPickedDepth	DisplayFrame	protected
_lightMgr	DisplayFrame	protected
_lineStippleMultiplier	DisplayObject	protected
_lineStipplePattern	DisplayObject	protected
_lineWidth	DisplayObject	protected
_liveAccessor	ComponentBase	protected
_location	DisplayObject	protected
_materialPalette	DisplayFrame	protected
_modelMatrix	DisplayObject	protected
_multitouchEnabled	DisplayFrame	protected
_normals	DisplayObject	protected
_nTex_vertices	DisplayObject	protected
_nVertices	DisplayObject	protected
_parentDisplayFrame	ComponentBase	protected
_polygonEnd	DisplayObject	protected
_polygonMode	DisplayObject	protected
_polygonOffset	DisplayObject	protected
_projMatrix	DisplayObject	protected
_shading	DisplayObject	protected
_sound_player	DisplayFrame
_texCoord	DisplayObject	protected
_textureBlendColor	DisplayObject	protected
_textureIndex	DisplayObject	protected
_textureMagFilter	DisplayObject	protected
_textureMap	DisplayObject	protected
_textureMinFilter	DisplayObject	protected
_texturePoints	DisplayObject	protected
_textureRepeat	DisplayObject	protected
_userData	DisplayObject	protected
_vertices	DisplayObject	protected
_viewMatrix	DisplayObject	protected
_visible	DisplayObject	protected
_weakRefs	WeakReferenceableMixin	protected
_width	DisplayFrame	protected
AbsolutePlacement() const	ComponentBase	inline
AbsolutePlacement(bool val)	ComponentBase	virtual
AddAvailableAttributes(unsigned int availableAttributes)	Group	protectedvirtual
AddWeakReference(WeakReference *weakRef) override	WeakReferenceableMixin	inlinevirtual
AllocateModelMatrix()	DisplayObject	protected
AlphaMode(int mode) override	Group	virtual
AlphaMode(void) override	Group	virtual
AntiAlias(bool mode) override	Group	virtual
AntiAlias(void) override	Group	virtual
ApplyDynamicRotation(void)	DisplayObject	protected
ApplyTextureSettings(int textureIndex=-1)	DisplayObject
Attributes()	DisplayObject	inline
AvailableAttributesEnum enum name	DisplayObject
BlinkedOff(void)	DisplayObject
Blinking(void)	DisplayObject	virtual
Blinking(const bool blink)	DisplayObject	virtual
BlinkRate(void)	DisplayObject	virtual
BlinkRate(const float rate)	DisplayObject	virtual
BoundingVolumeCenter() const	DisplayObject	inline
BoundingVolumeCenter(const Vector &center)	DisplayObject
BoundingVolumeHit(const Vector &start, const Vector &direction)	DisplayObject
BoundingVolumeRadius() const	DisplayObject	inline
BoundingVolumeRadius(float radius)	DisplayObject
CalcDrawMatrix()	ComponentBase	protectedvirtual
CalcDrawMatrixIfExists()	DisplayObject	inlineprotected
Calculate(double time)	SplashDisplay	virtual
CalculateCollisionPoint(const Vector &pickLoc, const Vector &directionVector, Vector *collisionPoint)	DisplayObject
CalculateMatrices(const OpenGLMatrices &newMatrices)	ComponentBase	protectedvirtual
CalculateParentBoundingBox(void)	DisplayObject	virtual
CalculateTextureCoordinates(void) override	Group	virtual
CallbackCaller() const	DisplayObject	inline
CallbackCaller(CallbackMethodCallerBase *cb)	DisplayObject
CheckLiveVersion(ComponentBase *comp, const GlsBuiltVersionInfo &callingVersion=GlsBuiltVersionInfo())	ComponentBase	static
CleanupDragMap()	DisplayFrame	protected
ClearBitfield(GLbitfield bitField)	DisplayFrame	inline
ClearBitfield()	DisplayFrame	inline
ClearDrag()	DisplayFrame	virtual
ClearDragAndFocus()	ComponentBase	virtual
ClearFocus()	DisplayFrame	virtual
CloneObject(bool generateNames=false)	SplashDisplay	virtual
ComponentBase(int generateInstance=0)	ComponentBase
CopyGeometry(DisplayObject *src)	ComponentBase	virtual
CopyHierarchyProperties(DisplayObject *src, bool copyName)	DisplayObject	virtual
CopyProperties(DisplayObject *src)	ComponentBase	virtual
Count(void) const	Group	inline
CreateComponent(DisplayObject::AvailableAttributesEnum availableAttributes=DisplayObject::GLS_ATTRIBUTES_ALL)	ComponentBase	inlinestatic
CreateLiveComponent(const char *fileName=NULL, const char *className=NULL, bool performCreate=true, const GlsBuiltVersionInfo &callingVersion=GlsBuiltVersionInfo())	ComponentBase	static
CreateObjects(void)	SplashDisplay	virtual
CullBackFace(const bool mode) override	Group	virtual
CullBackFace(void) override	Group	virtual
Culled() const	DisplayObject	inline
CullingEnabled(void)	DisplayFrame
CullingEnabled(const bool enabled)	DisplayFrame
CullTest(const GlsMatrixType *matrix, const Culler &culler)	DisplayObject	inline
CullTestChildren(void) const	Group	inline
CullTestChildren(bool mode)	Group
CurrentCursor(unsigned int cursor_id)	DisplayFrame	protectedvirtual
DcsMatrix()	DisplayObject	inline
DcsMatrix(const GlsMatrixType &matrix)	DisplayObject
DCSToLogical(Vector dcsPoint, Vector &logicalPoint, const GlsMatrixType *dcsMatrix=NULL)	DisplayObject
DeleteAllChildren()	ComponentBase	virtual
DeleteObject(DisplayObject *obj, bool recalculateBoundingbox=true)	Group	virtual
DeleteVertex(unsigned int indexAfter) final	DisplayObject	inlinevirtual
DeleteVertexAt(unsigned) override	Group	inline
disti::DisplayObject::DeleteVertexAt(unsigned int index)	DisplayObject	virtual
DepthTest(unsigned char mode) override	Group	virtual
DepthTest(void) override	Group	virtual
Destroy()	DisplayObject
DisplayFrame(int width, int height, bool allocateObjects=true)	DisplayFrame
DisplayObject(float x, float y, float z)	DisplayObject
DisplayObject(const DisplayObject &object, const bool generateNames)	DisplayObject
DragObject(DisplayObject *obj)	DisplayFrame	virtual
DragObject(void)	DisplayFrame	virtual
Draw()	ComponentBase	virtual
DrawMatrix()	DisplayObject	inline
DynamicRotate(float angle, int axis)	DisplayObject
DynamicRotate(const Vector &v)	DisplayObject
DynamicRotate(float angle[])	DisplayObject
DynamicRotate(float x, float y, float z)	DisplayObject	virtual
DynamicRotateRelative(float angle, int axis)	DisplayObject	virtual
DynamicRotation(int axis)	DisplayObject	virtual
DynamicScale()	DisplayObject	virtual
DynamicScale(float x, float y, float z)	DisplayObject	virtual
DynamicScale(const Vector &scale)	DisplayObject
DynamicTranslate(float x, float y, float z, bool relative=false)	DisplayObject	virtual
DynamicTranslate(const Vertex &amount, bool relative)	DisplayObject
DynamicTranslate(const Vector &amount)	DisplayObject
DynamicTranslate(float amount, int axis, bool relative=false)	DisplayObject	virtual
DynamicTranslation(int axis)	DisplayObject	virtual
DynamicTranslation()	DisplayObject	virtual
Editor()	DisplayObject
Editor() const	DisplayObject
Editor(DisplayObjectEditor *editor)	DisplayObject
FindByName(const char *name)	Group
FindByName(DisplayObject *obj)	Group	inline
FindByNameSameFrame(const char *name)	ComponentBase	virtual
FindByQualifiedName(const char *name)	Group
FindDragObject()	DisplayFrame	protected
FindNonRecursive(DisplayObject *obj)	Group
FinishObject()	DisplayObject	inlinevirtual
First()	Group
FirstObject()	Group
FocusObject(DisplayObject *obj)	DisplayFrame	virtual
FocusObject(void)	DisplayFrame	virtual
FrameAttribDict(void)	DisplayFrame	inline
FrameAttribDict(void) const	DisplayFrame	inline
GenerateInstanceName(void)	DisplayObject	virtual
GetApplicableTextureIndex()	DisplayObject	protected
GetApplicableTextureRepeat()	DisplayObject	protected
GetBlendColor(void)	Group	virtual
disti::DisplayObject::GetBlendColor(unsigned char color[])	DisplayObject
disti::DisplayObject::GetBlendColor(unsigned char &r, unsigned char &g, unsigned char &b, unsigned char &a)	DisplayObject
GetCenter(Vector &center)	DisplayObject	virtual
GetColor(void)	Group	virtual
disti::DisplayObject::GetColor(unsigned char c4[])	DisplayObject
disti::DisplayObject::GetColor(unsigned char &r, unsigned char &g, unsigned char &b, unsigned char &a)	DisplayObject
GetCppInterfaceDescription(InterfaceListType *addToThisList=NULL)	SplashDisplay	virtual
GetCppInterfaceDescriptionFree(InterfaceListType *array)	SplashDisplay	virtual
GetDragObjectForCursor(unsigned int cursorID)	DisplayFrame	protected
GetExtents(float &x, float &y, float &z, float &x1, float &y1, float &z1)	ComponentBase	virtual
GetExtentsDCS(Vector &min, Vector &max)	DisplayObject
GetFillColor(void)	Group	virtual
disti::DisplayObject::GetFillColor(unsigned char &r, unsigned char &g, unsigned char &b, unsigned char &a)	DisplayObject
disti::DisplayObject::GetFillColor(unsigned char c4[])	DisplayObject
GetInputHandler()	ComponentBase	virtual
GetLocation(Vertex &v)	DisplayObject	virtual
GetLocation(float &x, float &y, float &z)	DisplayObject	virtual
GetPainter()	DisplayObject	virtual
GetPlaneVectorPoints(Vertex &p1, Vertex &p2, Vertex &p3, Vertex &planeVector)	DisplayObject	virtual
GetResource(const std::string &resourceName)	DisplayFrame	inline
GetResource_CRTClean(const char *name)	DisplayFrame	virtual
GetResourceFree_CRTClean(char *memoryToFree)	DisplayFrame	virtual
GetResources(std::ostream &outstr, GlsResourceFilter *filter=NULL)	ComponentBase	virtual
GetResources_CRTClean(GlsResourceFilter *filter)	DisplayFrame	virtual
GetResourcesFree_CRTClean(char *memoryToFree)	DisplayFrame	virtual
GetRotationPoint(Vertex &v)	DisplayObject	virtual
GetTextureCoordinates(void)	DisplayObject	inline
GetTexturePoints(void)	DisplayObject	virtual
GetTexturePointTransformationMatrix(GlsMatrixType &world2tex)	DisplayObject
GetTransformedExtents(Vector &min, Vector &max, const GlsMatrixType &matrix, bool resetMinMax=true)	ComponentBase	virtual
Group(int generateInstance=0)	Group	explicit
Group(const Group &group, bool generateNames)	Group
GrowBoundingBox(DisplayObject *obj)	Group	protectedvirtual
handle(DisplayEvent *ev)	DisplayObject	virtual
HandleDisplayEvent(DisplayEvent *ev)	DisplayFrame	virtual
HandleInput(DisplayEvent *ev)	ComponentBase	virtual
Height(void)	DisplayFrame
Hit(float x, float y, float z, float scale, const Vector &directionVector, Vector *collisionPoint)	Group	virtual
HitUtil(float x, float y, float z, float scale, Vertex *vertices, unsigned int vertex_cnt, const Vector &directionVector, Vector *collisionPoint)	DisplayObject	virtual
Init()	ComponentBase	virtual
InitialGroupCount(unsigned int cnt)	Group
Initialize()	SplashDisplay	virtual
disti::InsertObject(DisplayObject *obj, bool reparent=true, bool recalculateBoundingbox=true, int loc=-1)	Group	virtual
disti::DisplayFrame::InsertObject(DisplayObject *obj, int loc)	DisplayFrame
InsertVertex(unsigned int indexAfter) final	DisplayObject	inlinevirtual
InsertVertexAt(unsigned) override	Group	inline
disti::DisplayObject::InsertVertexAt(unsigned int index)	DisplayObject	virtual
InsideVertexExtents(float x, float y, unsigned int nVerts, Vertex *verts, float tolerance)	DisplayObject	protected
InstanceName(void)	DisplayObject
InstanceName(const char *name)	DisplayObject
InvalidatePainter()	DisplayObject
IsEmpty() const	Group	inline
IsVisibleInScene(const DisplayObject *obj=NULL) const	DisplayObject	virtual
Item(unsigned int index)	Group
Last()	Group
LastObject(void)	Group
LightingEnabled() override	Group	virtual
LightingEnabled(bool lighting) override	Group	virtual
LightMgr(void)	DisplayFrame	inline
LightMgr(ComponentLightMgr *val)	DisplayFrame	inline
LineStippleMultiplier(int mult) override	Group	virtual
LineStippleMultiplier(void) override	Group	virtual
LineStipplePattern(int pattern) override	Group	virtual
LineStipplePattern(void) override	Group	virtual
LineWidth(float width) override	Group	virtual
LineWidth(void) override	Group	virtual
LiveAccessor()	ComponentBase	inline
Location(void) const override	ComponentBase	inlinevirtual
Location(const Vertex &v) override	ComponentBase	virtual
Location(float x, float y, float z)	ComponentBase	virtual
LogicalToDCS(Vector logicalPoint, Vector &objectLocal, const Vector *directionVector, const Vector &planeNormal=Vector(0, 0, 1), const Vector &planePoint=Vector(), const GlsMatrixType *dcsMatrix=NULL)	DisplayObject
LogicalToWindow(const Vector &logical, Vector &winLoc, const OpenGLMatrices &alternateMatrices=OpenGLMatrices())	DisplayObject
MaterialIndex()	DisplayObject	virtual
MaterialIndex(int index)	DisplayObject	virtual
MaterialIndices()	DisplayObject	virtual
MaterialIndices(DynamicArray< int > indices)	DisplayObject	virtual
MaterialPalette(void)	DisplayFrame	inline
ModelMatrix()	DisplayObject
MultitouchEnabled(bool enabled)	DisplayFrame	virtual
MultitouchEnabled(void)	DisplayFrame	virtual
NeedCalcDrawMatrix()	DisplayObject	inline
NeedCalculate()	DisplayObject	inline
NeedCalculate(bool val)	DisplayObject	inlineprotected
Normals()	DisplayObject	inline
NotifyAttributeChanged(const AttributeName &name) override	ComponentBase	virtual
NotifyWeakReferenceDestroyed(WeakReference *ref) override	WeakReferenceableMixin	inlinevirtual
NumberOfVertices() const	DisplayObject	inline
ObjectDepth(void)	DisplayObject	virtual
ObjectHeight(void)	DisplayObject	virtual
Objects()	Group	inline
Objects() const	Group	inline
objects	DisplayFrame
ObjectWidth(void)	DisplayObject	virtual
operator[](unsigned int index)	Group	inline
operator[](unsigned int index) const	Group	inline
Parent(DisplayFrame *par)	ComponentBase	virtual
disti::DisplayObject::Parent(void) const	DisplayObject	inline
ParentDisplayFrame() const	ComponentBase	inline
ParentDisplayFrame(DisplayFrame *val)	ComponentBase	inline
ParentGroup(Group *group)	DisplayObject	virtual
ParentGroup(void) const	DisplayObject	inline
PerformGroupCullCheck(void) const	Group	inline
PerformGroupCullCheck(bool mode)	Group
Pick3D(const Vector &winLoc, const Vector &logicalCoords, float scale, const Vector &directionVector, Vector &collisionWinLoc, const OpenGLMatrices &drawnMatrices)	ComponentBase	virtual
Pickable()	DisplayObject	inline
Pickable(unsigned char pick)	DisplayObject	virtual
PickCleanup(Vertex *vertices, unsigned int vertex_cnt)	DisplayObject	protected
PickSetup(float x, float y, float z, Vertex *vertices, unsigned int vertex_cnt, const Vector &directionVector)	DisplayObject	protected
PolygonEnd(const int mode) override	Group	virtual
PolygonEnd(void) override	Group	virtual
PolygonMode(void) override	Group	virtual
PolygonMode(int mode) override	Group	virtual
Position(const DisplayObject *obj) const	Group
PreDraw(const OpenGLMatrices &current, Culler &culler)	ComponentBase	virtual
ProjMatrix()	DisplayObject
disti::PushObject(DisplayObject *obj)	Group	virtual
disti::DisplayFrame::PushObject(DisplayObject *obj)	DisplayFrame
ReadResources(const char *filename)	DisplayFrame	virtual
ReallocateVertices(unsigned int numVertices, bool initializeNew, bool copyOld)	DisplayObject	virtual
RelativeAngle(const float x, const float y)	DisplayObject	virtual
ReorderObject(unsigned int oldIndex, unsigned int newIndex)	Group	virtual
Resource(const char *name)	ComponentBase	virtual
RestoreAlpha(void)	DisplayObject
RestoreAntiAlias(void)	DisplayObject
RestoreLighting(void)	DisplayObject
RestoreLineStyle(void)	DisplayObject
RestoreOpenGLState(void)	DisplayFrame	static
Rotate(const Vector &orig, float angle, const Vector &axis)	ComponentBase	virtual
disti::DisplayObject::Rotate(float angle, int axis=Z_AXIS)	DisplayObject	virtual
disti::DisplayObject::Rotate(const Vector &origin, float angle, int axis=Z_AXIS)	DisplayObject	virtual
RotationPoint() const	DisplayObject	inline
RotationPoint(const Vertex &v)	DisplayObject	virtual
RotationPoint(float x, float y, float z)	DisplayObject	virtual
SaveMatrices()	DisplayObject
Scale(float px, float py, float pz, Vertex *parentAnchor, int handleBar=0)	ComponentBase	virtual
disti::DisplayFrame::Scale(void)	DisplayFrame	inlineprotectedvirtual
Set(int spec,...)	DisplayObject
SetAvailableAttributes(unsigned int value)	ComponentBase	virtual
SetBlendColor(const GlsColor &color)	Group	virtual
disti::DisplayObject::SetBlendColor(unsigned char color[])	DisplayObject
disti::DisplayObject::SetBlendColor(unsigned char r, unsigned char g, unsigned char b, unsigned char a)	DisplayObject
SetColor(const GlsColor &color)	Group	virtual
disti::DisplayObject::SetColor(unsigned char c4[])	DisplayObject	inline
disti::DisplayObject::SetColor(unsigned char r, unsigned char g, unsigned char b, unsigned char a)	DisplayObject	inline
SetFillColor(const GlsColor &color)	Group	virtual
disti::DisplayObject::SetFillColor(unsigned char r, unsigned char g, unsigned char b, unsigned char a)	DisplayObject	inline
disti::DisplayObject::SetFillColor(unsigned char c4[])	DisplayObject	inline
SetGroupLocation(const Vertex &v)	Group	virtual
SetHeight(int h)	DisplayFrame
SetManualBlinkElapsedTime(double elapsedTime)	DisplayObject	static
SetNormals(unsigned int nPoints, Vector *vertices)	DisplayObject	virtual
SetOpenGLDefaultState(bool saveVal)	DisplayFrame	static
SetOrigin(const Vertex &vert)	DisplayObject	virtual
SetPainter(GlsPainter *painter) override	Group	virtual
SetRedraw(void)	ComponentBase	virtual
SetResource(const std::string &resourceName, const std::string &resourceVal)	DisplayFrame	inline
SetResource_CRTClean(const char *name, const char *value)	DisplayFrame	virtual
SetResources(std::istream &instr)	DisplayFrame	virtual
SetResources_CRTClean(const char *buf)	DisplayFrame	virtual
SetTexCoords(unsigned int nPoints, Vector *new_tex_coord, bool isVectorArray=true)	DisplayObject	virtual
SetTexCoords(unsigned int nPoints, Vertex *new_tex_coord)	DisplayObject	inline
SetTexturePaletteSize(int cnt)	DisplayFrame
SetupAlpha(void)	DisplayObject
SetupAntiAlias(void)	DisplayObject
SetupDepthTest(void)	DisplayObject
SetupLighting(void)	DisplayObject
SetupLineStyle(void)	DisplayObject
SetupPolyDrawStyle(void)	DisplayObject
SetupShading(void)	DisplayObject
SetupTexture(void)	DisplayObject
SetValue(int spec, va_list &args)	ComponentBase	virtual
SetVertexColor(unsigned int vertex, unsigned char CurrentFillColor[])	DisplayObject	virtual
SetVertices(unsigned int nPoints, Vertex *vertices)	DisplayObject	virtual
SetWidth(int w)	DisplayFrame
Shading(const int mode) override	Group	virtual
Shading(void) override	Group	virtual
TextureCoordinates(void)	DisplayObject	inline
TextureIndex()	ComponentBase	virtual
TextureIndex(int index)	ComponentBase	inlinevirtual
TextureMagnificationFilter(const int filter)	Group	virtual
TextureMagnificationFilter(void)	Group	virtual
TextureMappingTechnique(const int map)	Group	virtual
TextureMappingTechnique(void)	Group	virtual
TextureMinificationFilter(const int filter)	Group	virtual
TextureMinificationFilter(void)	Group	virtual
texturePalette	DisplayFrame
TextureRepeat(const int rep)	Group	virtual
disti::DisplayObject::TextureRepeat(void)	DisplayObject	virtual
Translate(float tr[])	ComponentBase	virtual
Translate(float x, float y, float z)	ComponentBase	virtual
TranslateVertices(float x, float y, float z)	Group	virtual
UpdateBoundingVolume(void)	DisplayObject	virtual
UseManualBlinkElapsedTime(bool useManualTime)	DisplayObject	static
UseParentsLighting(const bool &)	ComponentBase	virtual
UseParentsLighting()	ComponentBase	virtual
UserData(void) const	DisplayObject	inline
UserData(void *data)	DisplayObject	inline
VaListSetNormals(unsigned int nPoints, va_list args)	DisplayObject	protectedvirtual
VaListSetTexCoords(unsigned int nPoints, va_list args)	DisplayObject	protectedvirtual
VaListSetVertices(unsigned int nPoints, va_list args)	DisplayObject	protectedvirtual
VaSetNormals(unsigned int nPoints,...)	DisplayObject
VaSetTexCoords(unsigned int nPoints,...)	DisplayObject
VaSetVertices(unsigned int nPoints,...)	DisplayObject
Vertices()	DisplayObject	inlinevirtual
ViewMatrix()	DisplayObject
Visibility(void) const	DisplayObject	inline
Visibility(const bool vis)	DisplayObject	virtual
Visible(void) const	DisplayObject	inline
WeakReferenceableMixin(void)	WeakReferenceableMixin	inlineprotected
Width(void)	DisplayFrame
WindowToLogical(const Vector &winLoc, Vector &logical, Vector *directionVector=NULL, const OpenGLMatrices &alternateMatrices=OpenGLMatrices())	DisplayObject
WorldRotationPoint(void)	DisplayObject	virtual
WorldRotationPoint(const Vector &vert)	DisplayObject	virtual
WorldVertex(unsigned int i)	DisplayObject	virtual
WorldVertex(unsigned int i, const Vertex &vert)	DisplayObject	virtual
WriteResources(const char *filename, GlsResourceFilter *filter=NULL)	DisplayFrame	virtual
X(void) const	DisplayObject	inline
X(const float x)	DisplayObject	inline
Y(void) const	DisplayObject	inline
Y(const float y)	DisplayObject	inline
Z(void) const	DisplayObject	inline
Z(const float z)	DisplayObject	inline
~AttributeChangedNotifier()	AttributeChangedNotifier	inlinevirtual
~ComponentBase()	ComponentBase	virtual
~DisplayObject(void)	DisplayObject	virtual
~Group()	Group	virtual
~WeakReferenceableMixin()	WeakReferenceableMixin	inlineprotectedvirtual