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You.i Engine
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You.i Engine
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Provides a base for the definition of camera objects.
In 3D rendering, a camera is something that defines a view and a projection using a pair of matrices. This class provides the APIs and behaviours describing the view component of a camera. Subclasses like CYIOrthographicCameraSceneNode and CYIPerspectiveCameraSceneNode add additional APIs and behaviours to describe the projection component.
By virtue of being a scene node a camera can be positioned and oriented spatially relative to other nodes. The view matrix of a camera is the undoing of this positioning and orientation such that the rest of the scene becomes centered and oriented around the camera. The effect of this view matrix, when applied to the world transformation of another node in the scene, is to re-position the node in the location and orientation from which the camera object is seeing it.
Additionally, a camera can have an optional target scene node which it will face before having its transformations applied. The camera will continue to follow this target if either the camera node or its target move.
#include <scenetree/YiAbstractCameraSceneNode.h>
Public Member Functions | |
| void | SetUpVector (const glm::vec3 &fCamUp) |
| const glm::vec3 & | GetUpVector () const |
| void | SetTarget (CYISceneNode *pTargetNode) |
| CYISceneNode * | GetTarget () const |
| void | RemoveTarget () |
| const glm::mat4 & | GetCameraMatrix () const |
| void | SetViewport (const CYIViewport &viewport) |
| const CYIViewport & | GetViewport () const |
| const glm::mat4 & | GetViewMatrix () const |
| const glm::mat4 & | GetProjectionMatrix () const |
 Public Member Functions inherited from CYISceneNode | |
| CYISceneNode () | |
| virtual | ~CYISceneNode () |
| virtual bool | Init () |
| void | ForceDirty () |
| void | ClearDirtyFlag () |
| void | SetDirtyFlag (DirtyFlag eDirtyFlag) |
| DirtyFlag | GetDirtyFlag () const |
| DirtyFlag | GetPreviousDirtyFlag () const |
| const CYIString & | GetName () const |
| CYIString | GetUniqueName () const |
| void | SetSceneManager (CYISceneManager *pSceneManager) |
| void | SetName (const CYIString &name) |
| int32_t | GetID () const |
| void | SetID (int32_t nID) |
| uint64_t | GetUniqueID () const |
| bool | AddChild (std::unique_ptr< CYISceneNode > pSceneNode) |
| bool | AddChild (std::unique_ptr< CYISceneNode >, int32_t nIndex) |
| bool | InsertChildAfter (CYISceneNode *pRefNode, std::unique_ptr< CYISceneNode > pSceneNode) |
| std::unique_ptr< CYISceneNode > | RemoveChild (CYISceneNode *pSceneNode) |
| bool | ReorderChild (uint32_t uFromIndex, uint32_t uToIndex) |
| CYISceneNode * | GetParent () const |
| bool | ChangeParent (CYISceneNode *pParent) |
| CYISceneNode * | GetDrawParent () const |
| bool | IsAncestorOf (const CYISceneNode *pNode) const |
| CYISceneManager * | GetSceneManager () const |
| uint32_t | GetChildCount () const |
| uint32_t | GetChildCountRecursive () const |
| CYISceneNode * | GetChild (uint32_t nIndex) const |
| Iterator | begin (Iterator::ITERATION_MODE eMode=Iterator::IMMEDIATE_CHILDREN) const |
| Iterator | end (Iterator::ITERATION_MODE eMode=Iterator::IMMEDIATE_CHILDREN) const |
| ReverseIterator | rbegin (Iterator::ITERATION_MODE eMode=Iterator::IMMEDIATE_CHILDREN) const |
| ReverseIterator | rend (Iterator::ITERATION_MODE eMode=Iterator::IMMEDIATE_CHILDREN) const |
| CYISceneNode * | GetChild (const CYIString &sName) const |
| uint32_t | GetDrawChildCount () const |
| CYISceneNode * | GetDrawChild (uint32_t uIndex) const |
| CYISceneNode * | GetDrawChildByID (int32_t nID) const |
| template<class YI_SCENE_NODE_SUBCLASS > | |
| YI_SCENE_NODE_SUBCLASS * | GetChild (uint32_t uTargetMatchedNodeCount=1) const |
| template<class YI_SCENE_NODE_SUBCLASS > | |
| std::list< YI_SCENE_NODE_SUBCLASS * > | GetChildren () const |
| int32_t | GetIndexOfChild (const CYISceneNode *pSceneNode) const |
| void | Show () |
| void | Hide () |
| void | SetVisibility (bool bVisible) |
| void | SetOpacity (float fOpacity) |
| float | GetCompositeOpacity () const |
| float | GetLocalOpacity () const |
| bool | IsVisible () const |
| bool | IsTrulyVisible () const |
| CYISceneNode * | GetNode (const CYIString &name) |
| CYISceneNode * | GetNode (const CYIString &name, const CYIRuntimeTypeInfo &enforceClassType) |
| CYISceneNode * | GetNode (const CYIRuntimeTypeInfo &enforceClassType) |
| CYISceneNode * | GetNodeAfterTarget (const CYIRuntimeTypeInfo &enforceClassType, CYISceneNode *pStartAfterTarget) |
| template<class YI_SCENE_NODE_SUBCLASS > | |
| YI_SCENE_NODE_SUBCLASS * | GetNode (const CYIString &name) |
| CYISceneNode * | GetNode (const int32_t nID) |
| CYISceneNode * | GetNode (const int32_t nID, const CYIRuntimeTypeInfo &enforceClassType) |
| template<class YI_SCENE_NODE_SUBCLASS > | |
| bool | FindNode (YI_SCENE_NODE_SUBCLASS *&pNode, const CYIString &nodeName, FETCH_TYPE eType, const CYIString &tag) |
| std::list< CYISceneNode * > | GetNodes (const CYIString &name) |
| std::list< CYISceneNode * > | GetNodes (int32_t nID) |
| std::list< CYISceneNode * > | GetNodes (const CYIRuntimeTypeInfo &enforceClassType) |
| template<class YI_SCENE_NODE_SUBCLASS > | |
| const YI_SCENE_NODE_SUBCLASS * | GetNode (uint32_t uTargetMatchedNodeCount=1) const |
| template<class YI_SCENE_NODE_SUBCLASS > | |
| YI_SCENE_NODE_SUBCLASS * | GetNode (uint32_t uTargetMatchedNodeCount=1) |
| void | SetMesh (const std::shared_ptr< CYIMesh > &pMesh) |
| void | SetMaterial (const std::shared_ptr< CYIMaterial > &pMaterial, uint32_t nIndex=0) |
| void | AddEffect (const std::shared_ptr< CYIEffect > &pEffect) |
| void | RemoveEffect (const std::shared_ptr< CYIEffect > &pEffect) |
| uint32_t | GetEffectCount () const |
| std::shared_ptr< CYIEffect > | GetEffect (uint32_t uIndex) const |
| void | ConnectEffectsToTimelines (const CYITimelineTrack *pTrack) |
| void | AddMask (std::unique_ptr< CYIMask > pMask) |
| std::unique_ptr< CYIMask > | RemoveMask (const CYIMask *pMask) |
| uint32_t | GetMaskCount () const |
| const CYIMask * | GetMask (uint32_t uIndex) const |
| CYIMask * | GetMask (uint32_t uIndex) |
| const std::shared_ptr< CYIMesh > & | GetMesh () const |
| uint32_t | GetMaterialCount () const |
| const std::shared_ptr< CYIMaterial > | GetMaterial (uint32_t nIndex=0) const |
| const std::shared_ptr< IYIUniformBufferObject > & | GetShaderUniforms () const |
| void | SetMeshTransform (const glm::mat4 &rTransform) |
| void | DestroyChildren () |
| const glm::mat4 & | GetLocalTransform () const |
| const glm::mat4 & | GetEffectTransform () const |
| const glm::mat4 & | GetWorldTransform () const |
| bool | Intersects (const CYISceneNode *pNode) const |
| void | SetRenderTarget (const std::shared_ptr< CYIRenderTarget > &pRenderTarget) |
| const std::shared_ptr< CYIRenderTarget > | GetRenderTarget () const |
| virtual void | BuildDrawList (std::vector< IYIRenderer::Command > &drawList, CYIAbstractCameraSceneNode *pCameraToDrawWith=nullptr) |
| const CYIAABB & | GetWorldAABB () const |
| const CYIAABB & | GetLocalAABB () const |
| void | SetAnchorPoint (const glm::vec3 &ref) |
| void | SetAnchorPoint (float fX, float fY, float fZ) |
| void | SetAnchorPointX (float fX) |
| void | SetAnchorPointY (float fY) |
| void | SetAnchorPointZ (float fZ) |
| void | SetPosition (const glm::vec3 &ref) |
| void | SetPosition (float fX, float fY, float fZ) |
| void | SetPositionX (float fX) |
| void | SetPositionY (float fY) |
| void | SetPositionZ (float fZ) |
| void | SetRotation (const glm::vec3 &fEulerDegrees) |
| void | SetRotation (float fPitchDegrees, float fYawDegrees, float fRollDegrees) |
| void | SetRotationX (float fPitchDegrees) |
| void | SetRotationY (float fYawDegrees) |
| void | SetRotationZ (float fRollDegrees) |
| void | SetOrientation (float fPitchDegrees, float fYawDegrees, float fRollDegrees) |
| void | SetOrientation (const glm::quat &orient) |
| void | SetScale (const glm::vec3 &fScaleFactors) |
| void | SetScale (float fFactorX, float fFactorY, float fFactorZ) |
| void | SetScaleX (float fFactor) |
| void | SetScaleY (float fFactor) |
| void | SetScaleZ (float fFactor) |
| const glm::vec3 & | GetPosition () const |
| const glm::vec3 & | GetScale () const |
| const glm::vec3 & | GetWorldScale () const |
| const glm::vec3 & | GetWorldSurfaceScale () const |
| const glm::vec3 & | GetRotation () const |
| const glm::quat & | GetOrientation () const |
| const glm::vec3 & | GetAnchorPoint () const |
| virtual void | SetSize (const glm::vec3 &vSize, bool bDirtyLayout=true) |
| const glm::vec3 & | GetSize () const |
| const glm::vec3 & | GetInitialSize () const |
| void | SetMeasuredSize (const glm::vec3 &vMeasuredSize) |
| const glm::vec3 & | GetMeasuredSize () const |
| void | SetInternalCustomTimelineValue (uint32_t nTrackID, const CYIVariant &value) |
| virtual void | SetCustomTimelineValue (uint32_t nTrackID, const CYIVariant &value) |
| void | SetClippingOn () |
| void | SetClippingOff () |
| bool | GetClipping () const |
| void | SetClippingBox (const CYIAABB &rWorldBox) |
| const CYIAABB & | GetClippingBox () const |
| void | StartPropertyAnimation (YI_NODE_PROPERTY_TYPE ePropType, float fFrom, float fTo, uint32_t nDurMs, CYITimeInterpolator *pTimeInterpolator=nullptr, bool bDirtyLayout=true) |
| void | StopPropertyAnimation (YI_NODE_PROPERTY_TYPE ePropType) |
| void | UpdateLocalSpaceCollision (CYIActionEvent *pActionEvent) |
| virtual bool | BroadcastEvent (const std::shared_ptr< CYIEventDispatcher > &pDispatcher, CYIEvent *pEvent) |
| void | UpdateEventForLocalSpace (CYIActionEvent *pActionEvent, glm::vec3 &rayOrigin, glm::vec3 &rayNonOriginPoint) const |
| bool | IsBoundingBoxHit (const CYIRay &rWorldSpaceRay) const |
| bool | IsMeshHit (const CYIRay &rWorldSpaceRay) const |
| void | DumpTree () const |
| void | StartCaptureKeyboardEvents () |
| void | StopCaptureKeyboardEvents () |
| void | StartCaptureTrackpadEvents () |
| void | StopCaptureTrackpadEvents () |
| void | StartCapturePointerEvents (uint8_t uPointerID) |
| void | StopCapturePointerEvents (uint8_t uPointerID) |
| bool | DrawBehindChildren (CYISceneNode *pSceneNode) |
| bool | DrawInFrontOfChildren (CYISceneNode *pSceneNode) |
| bool | DrawBehind (CYISceneNode *pSceneNode) |
| bool | DrawInFront (CYISceneNode *pSceneNode) |
| bool | IsFocusRoot () const |
| void | SetIsFocusRoot (bool bIsFocusRoot) |
| virtual void | OnFocusGainedInDescendants () |
| virtual void | FocusGainedInDescendants () |
| virtual void | OnFocusLostInDescendants () |
| virtual void | FocusLostInDescendants () |
| virtual void | OnFocusChangedInDescendants () |
| virtual void | FocusChangedInDescendants () |
| virtual bool | ContainsFocusableDescendant (const CYIFocusSearchOptions &options=CYIFocusSearchOptions()) const |
| void | ShowPointerDebugNode (CYIActionEvent *pActionEvent) |
| void | SetUseLocalTransformAndAlpha (bool bUse) |
| virtual bool | GetProperty (const CYIString &rPropertyName, CYIString *pValue) const override |
| virtual const std::map< CYIString, CYIString > & | GetProperties () const override |
| void | SetProperty (const CYIString &rPropertyName, const CYIString &rPropertyValue) |
| const std::shared_ptr< CYISceneNodeProxy > & | GetSceneNodeProxy () const |
| void | SetLayoutConfig (std::unique_ptr< CYILayoutConfig > pLayoutConfig) |
| const CYILayoutConfig * | GetLayoutConfig (LayoutConfigFetchMode eFetchMode=LAYOUT_CONFIG_LAZY_INSTANTIATE) const |
| CYILayoutConfig * | GetLayoutConfig (LayoutConfigFetchMode eFetchMode=LAYOUT_CONFIG_LAZY_INSTANTIATE) |
| void | SetLayoutState (std::unique_ptr< CYILayoutState > pLayoutState) |
| const CYILayoutState * | GetLayoutState () const |
| CYILayoutState * | GetLayoutState () |
| void | RequestLayout () |
| LayoutDirtyFlag | GetLayoutDirtyFlag () const |
| virtual void | SetLayoutDirtyFlag (LayoutDirtyFlag eFlag) |
| virtual void | Measure (const MeasureSpec &widthSpec, const MeasureSpec &heightSpec, const MeasureSpec &depthSpec) |
| virtual void | ApplyMeasurements () |
| CYIAbstractCameraSceneNode * | FindActiveCamera () const |
| template<typename T > | |
| bool | CanCastTo () const |
| Public Member Functions inherited from CYIEventTarget | |
| CYIEventTarget () | |
| virtual | ~CYIEventTarget () |
| bool | AddEventListener (YI_EVENT_TYPE eEventType, CYIEventHandler *pListener, EVENT_PHASE ePhase=BUBBLE) |
| bool | RemoveEventListener (YI_EVENT_TYPE eEventType, CYIEventHandler *pListener, EVENT_PHASE ePhase=BUBBLE) |
| void | SetSpecialTypeFlag (YI_SPECIAL_EVENT_TARGET_TYPE eType) |
| void | ClearSpecialTypeFlag (YI_SPECIAL_EVENT_TARGET_TYPE eType) |
| YI_SPECIAL_EVENT_TARGET_TYPE | GetSpecialTypes () const |
| Public Member Functions inherited from CYIScriptableRTTIObject | |
| CYIScriptableRTTIObject () | |
| virtual | ~CYIScriptableRTTIObject () |
| virtual const CYIRuntimeTypeInfo * | GetRuntimeTypeInfoForScriptObject () const override |
| Public Member Functions inherited from CYIScriptableObject | |
| CYIScriptableObject () | |
| CYIScriptableObject (const CYIScriptableObject &other) | |
| CYIScriptableObject & | operator= (const CYIScriptableObject &other) |
| virtual | ~CYIScriptableObject () |
| CYIBindingImplementation * | GetBindingImplementation () const |
| void | SetBindingImplementation (CYIBindingImplementation *pBindingImplementation) |
| Public Member Functions inherited from CYISignalHandler | |
| CYISignalHandler () | |
| CYISignalHandler (const CYISignalHandler &rSignalHandler) | |
| virtual | ~CYISignalHandler () |
| CYISignalHandler & | operator= (const CYISignalHandler &rSignalHandler) |
| void | MoveToThread (CYIThread *pThread) |
| This function allows the user to override the default thread affinity to any CYIThread that may or may not be running. More... | |
| CYIThreadHandle | GetThreadAffinity () const |
| void | SetThreadAffinity (const CYIThreadHandle &rThreadAffinity) |
| virtual bool | IsConnected () const |
| virtual bool | IsConnected (const CYISignalBase &rSignal) const |
| void | Disconnect (CYISignalBase &rSignal) |
| void | DisconnectFromAllSignals () |
| Public Member Functions inherited from CYIThread::Listener | |
| Listener () | |
| virtual | ~Listener () |
| virtual void | OnThreadStarted (CYIThread *) |
| virtual void | OnThreadTerminated (CYIThread *) |
| virtual void | OnThreadFinished (CYIThread *) |
| Public Member Functions inherited from IYIPropertiesSource | |
| virtual | ~IYIPropertiesSource () |
Protected Member Functions | |
| CYIAbstractCameraSceneNode () | |
| void | DirtyProjectionMatrix () |
| virtual glm::mat4 | CalculateProjectionMatrix () const =0 |
| glm::mat4 | CalculateViewMatrix () const |
| glm::mat4 | CalculateViewportMatrix () const |
| const glm::mat4 & | GetViewportWorldMatrix () const |
| virtual void | UpdateEnd () override |
| virtual CYIString | GetDumpTreeString () const override |
| Protected Member Functions inherited from CYISceneNode | |
| void | Update (bool bForceDirty=false) |
| virtual void | OnUpdateBegin () |
| virtual void | UpdateBegin () |
| virtual void | OnUpdateEnd () |
| virtual void | OnDirtyFlagChanged () |
| virtual void | DirtyFlagChanged () |
| virtual void | OnTransformUpdated () |
| virtual void | TransformUpdated () |
| virtual void | OnWorldScaleUpdated () |
| virtual void | WorldScaleUpdated () |
| virtual void | OnWorldSurfaceScaleUpdated () |
| virtual void | WorldSurfaceScaleUpdated () |
| virtual void | OnVisibilityUpdated () |
| virtual void | VisibilityUpdated () |
| virtual void | OnCompositeOpacityUpdated () |
| virtual void | CompositeOpacityUpdated () |
| virtual void | OnWorldBoundingBoxUpdated () |
| virtual void | WorldBoundingBoxUpdated () |
| virtual void | OnLocalBoundingBoxUpdated () |
| virtual void | LocalBoundingBoxUpdated () |
| virtual void | OnChildAdded (CYISceneNode *pChild) |
| virtual void | ChildAdded (CYISceneNode *pChild) |
| virtual void | OnChildRemoved (CYISceneNode *pChild) |
| virtual void | ChildRemoved (CYISceneNode *pChild) |
| virtual void | OnSizeChanged () |
| virtual void | SizeChanged () |
| virtual void | CalculateLocalTransform (glm::mat4 *pTransform) const |
| virtual void | ChildNeedsLayout () |
| virtual void | LayoutDirtied () |
| virtual void | OnChildVisibilityChanged (CYISceneNode *pChild) |
| virtual void | ChildVisibilityChanged (CYISceneNode *pChild) |
| virtual bool | ProcessEvent (const std::shared_ptr< CYIEventDispatcher > &pDispatcher, CYIEvent *pEvent) override |
| LayoutDirtyFlag | GetCurrentLayoutDirtyFlag () const |
| void | DumpTree (int32_t nIndentLevel) const |
| void | SetShaderUniforms () |
| virtual void | SetCustomUniforms () |
| template<class T > | |
| void | SetNodeType () |
| virtual CYISceneNode * | GetNodeFromChildren (const CYIString &name) |
| virtual CYISceneNode * | GetNodeFromChildren (const int32_t nID) |
| virtual CYISceneNode * | GetNodeFromChildren (const CYIRuntimeTypeInfo &enforceClassType) |
| CYISceneNode * | GetNodeFromChildrenAfterTarget (const CYIRuntimeTypeInfo &enforceClassType, bool *pbTargetReached, CYISceneNode *pStartAfterTarget) |
| Protected Member Functions inherited from CYIScriptableRTTIObject | |
| virtual std::pair< const CYIRuntimeTypeInfo *, const void * > | GetRuntimeTypeInfoWithObject () const =0 |
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Subclasses must implement this function to return their calculated projection matrix. This function will be called if the result of IsProjectionDirty() is true on a given frame.
Implemented in CYIPerspectiveCameraSceneNode, and CYIOrthographicCameraSceneNode.
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The view matrix represents the transformation required to center the world coordinate system on the position and orientation of the camera.
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The viewport transform, when applied to a vertex that has undergone the view and projection transforms, will place that vertex into a viewport sized rectangle placed at the origin of the camera's parent node.
The view and projection matrices will result in a bottom-left oriented coordinate system, with +Y being "up," but the coordinate system of the user interface is top-left anchored, so this matrix contains a flip on Y.
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Subclasses must call this function if their projection matrix needs to be recalculated
| const glm::mat4& CYIAbstractCameraSceneNode::GetCameraMatrix | ( | ) | const |
The camera matrix represents the transformations required to display the point of view of the camera inside the region which is represented by the camera's viewport.
This matrix is a concatenation of the camera's view, then projection, and then viewport and viewport world matrices. The effect of applying this matrix on top of world-space vertex coordinates is to map those coordinates on to the viewport of this camera, which is described as a rectangle also defined in world-space.
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Returns a string containing useful information about this node, displayed by DumpTree
Subclasses can implement this method to specify different or additional information. Appending to the default string is recommended.
Reimplemented from CYISceneNode.
Reimplemented in CYIPerspectiveCameraSceneNode, and CYIOrthographicCameraSceneNode.
| const glm::mat4& CYIAbstractCameraSceneNode::GetProjectionMatrix | ( | ) | const |
The projection matrix is calculated based on the camera's projection properties. This differs based on the type of camera and details can be found in the concrete implementations of CYIAbstractCameraSceneNode.
| CYISceneNode* CYIAbstractCameraSceneNode::GetTarget | ( | ) | const |
Returns the target for the camera, or nullptr if the camera has no target.
| const glm::vec3& CYIAbstractCameraSceneNode::GetUpVector | ( | ) | const |
Returns the up vector of the camera. The up vector, expressed in world coordinates, represents which direction "up" will be from the camera's point of view. Imagining the camera as an object in the scene, its up vector determines which direction the top of the camera will be facing.
| const glm::mat4& CYIAbstractCameraSceneNode::GetViewMatrix | ( | ) | const |
The view matrix is calculated from the camera's world transformation, and represents the transform required to center the world coordinate system on the location and orientation of the camera.
| const CYIViewport& CYIAbstractCameraSceneNode::GetViewport | ( | ) | const |
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This function is called during camera matrix calculation to place the generated viewport in the right world-space coordinates Will return the camera's parent's world transformation, or identity if the camera has no parent.
| void CYIAbstractCameraSceneNode::RemoveTarget | ( | ) |
Equivalent to calling SetTarget(nullptr)
Remove the target of the camera. The camera will stop tracking the target and return to the orientation defined by its own rotation properties.
This function does not release any memory, the target is not owned by the camera and it is up to the allocating class to delete the target.
| void CYIAbstractCameraSceneNode::SetTarget | ( | CYISceneNode * | pTargetNode | ) |
Specify a node to use as the camera's point of interest. The transformations of the camera will be applied after the camera has been made to face the target. If no target is provided, the transformations of the camera will be applied from the default pose which is facing +Z.
Setting the camera's target and applying no additional transforms to the camera will result in the target being kept centered on the camera's view. An additional transform, like a 10 degree rotation on Y, will cause the target to move off of the center of the camera; the camera will be looking at a point 10 degrees beside the target from its position. Generally: the camera will orient toward the target and then apply its local orientation overtop.
By default this target will be null and the camera's rotation transforms will dictate where it faces. Adding a target will re-orient the camera to follow the target.
| void CYIAbstractCameraSceneNode::SetUpVector | ( | const glm::vec3 & | fCamUp | ) |
Set the up vector for the camera. The up vector, expressed in world coordinates, represents which direction "up" will be from the camera's point of view. Imagining the camera as an object in the scene, its up vector determines which direction the top of the camera will be facing.
| void CYIAbstractCameraSceneNode::SetViewport | ( | const CYIViewport & | viewport | ) |
Sets the viewport for this camera.
The objects affected by the camera will be rendered to fit inside of this viewport, which will be placed at the origin of the node (that is, the point (0,0,0)) which is the parent of this camera.
Generally, the viewport is specified to be (0, 0, view.width, view.height), where "view" is a CYISceneView which is the parent of this camera.
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This hook provides subclasses a means to do operations subsequent to update. This hook is called after all children of the current node have been updated.
Reimplemented from CYISceneNode.
1.8.11