MapExtractor Class Reference
MapExtractor Class Reference
#include <MapExtractorInterface.h>
Class Description
This is the cental modul for map extraction, this node controls the map extraction process by communicating with the different modules.
The map extraction is done in the following steps:
- The map extraction node calls the ProcessSurface function of the layout module, and passes the address of the current target mesh to it.
- The layout module collects surface points on the target mesh, fills a TargetLocation structure for each of those points, and calls the map extractor modules ProcessSurfacePoint function for each of them separately.
- The map extraction module then uses the locator module to find a point on the source meshes which belongs to the specified target point by calling the LocateSurfacePoint function. The locator module fills a SurfacePoint structure with the requested information.
- The map extraction module uses all the enabled sampler modules to calculate data for the given target-source surface point pair. It passes both the target and the source point location as a parameter to the ProcessSurfacePoint function of the samplers. If there are any Gate modules attached to the given sampler, they are all called in the given order, and they can convert the data in any way they like. The returned data is then passed to the utilizer modules, which does something with the data. In most cases the utilizer modules need additional information about the current target-source surface point pair, which is specific to the type of the layout module. The TargetLocation structure has some generic data fields where the layout module can put additional information, which can be later used by the utilized module to know how to use the result (for example in case of traditional map extraction, the x and y coordinates of the current point is stored in that area).
Note that the map extractor does not process the locations immediately, it collects the target locations specified by the layout in a temporary array, and sometimes it flushes that array by processing all the locations. This processing is done in two steps, first the map extraction node uses the locator module to find the corresponting surface points on the source surfaces, and then it processes these target-source pairs by calling the correspontind functions in the samplers and utilizers. This way the samplers can do preprocession on the target-source location collection if that makes the work easier for them (for example the AO baking sampler uses the GPU to calculate the needed data, so it cannot process the target-source location pairs one by one). The layout node can ask the map extractor to flush these buffers by calling the function Flush.
A full map extraction process consist of the following modules:
- Main map extractor node: it controls the whole extraction process. Any plugin can create a map extraction node, set different parameters for it, and then call the Execute function which will perform the operation.
- Layout module: this module is used to collect points on the target surface. The map extraction will calculate data for each of these points on the target surface. For example in regular texture map extraction the layout node collects surface locations on the target meshes which are belongs to a texel on the texture.
- Locator module: this module is used by the map extractor to find the surface point on the source mesh which belongs to a given surface point on the target mesh (see class Locator). For example in case of arbitrary meshes, the locator object usually fires rays at the target surface location, and calculates intersection between the ray and the source meshes.
- Sampler modules: these modules are used to calculate different kind of data for target-source surface point pairs. The data is represented as a color. This data is then passed to the utilized modules. For example the displacement sampler simly calculates the distance between the target and source locations in the target normal vector direction.
- Utilizer modules: each sampler has a correspoding utilizer module attached. The utilized module takes the data which comes from the sampler and does something with it, for example stores the data in a file. The utilizers are usually comunicating with the layout module to obtain information about the current target-source surface point pair. For this reason, the type of the layout module is controlled by the utilizers. All the samplers must use the same type of utilizer. For example in traditional texture map extraction the utilizers are writing the data which comes from the samplers into image files.
Examples:
Definition at line 64 of file MapExtractorInterface.h.
Inheritance diagram for MapExtractor:
Additional Inherited Members | |
| Public Types inherited from Node | |
| enum | DiagnosticLevel { dgnLevel1, dgnLevel2, dgnLevel3 } |
| Indicates the level of validity checking that is performed in CheckValidity() More... | |
| Public Member Functions inherited from TreeNode | |
| TreeNode (void) | |
| ~TreeNode (void) | |
| virtual void | Serialize (Stream &s) |
| Serializes the node. More... | |
| virtual void | AddChild (TreeNode *pChild, bool bFirst=false) const |
| Adds a node/subtree to the list of children. The added node will be removed from the current parent if it has one. More... | |
| virtual void | RemoveChild (TreeNode *pChild) const |
| Removes a node/subtree from the list of children. More... | |
| virtual TreeNode * | FirstChild (void) const |
| Returns the first node from the child list. More... | |
| virtual TreeNode * | Parent (void) const |
| Returns the parent node. More... | |
| virtual TreeNode * | NextSibling (void) const |
| Returns the next linked node with the same parent. More... | |
| virtual TreeNode * | PrevSibling (void) const |
| Returns the previous linked node with the same parent. More... | |
| virtual void | MoveChild (TreeNode *pChild, TreeNode *pAfter) |
| Moves the child after the given node in order. More... | |
| virtual TreeNode * | ChildByClass (const ClassDesc *pClass, bool bAutoCreate=true) const |
| Returns the first child with the specified type. When the bAutoCreate parameter is true and such a child does not exists, it creates it with the preferred descedant type. More... | |
| template<typename type > | |
| type * | ChildByClass (bool bAutoCreate=true) const |
| Same as above, a most confortable version. More... | |
| virtual TreeNode * | ChildByClass (const ClassDesc *pClass, unsigned int iIndex=0) const |
| Returns the first child with the specified type, or returns zero if no child found. More... | |
| template<typename type > | |
| type * | ChildByClass (unsigned int iIndex=0) const |
| Same as above, a most confortable version. More... | |
| virtual void | DeleteChildByClass (const ClassDesc *pClass) |
| Deletes all child which is derived from a specific class. More... | |
| virtual QString | Info (void) const |
| Returns descriptive information about the node. More... | |
| virtual bool | Visible (void) const |
| Returns if the node is visible. Should be overridden in derived classes. More... | |
| virtual void | SetVisible (bool b) |
| Sets the node visibility Should be overridden in derived classes. More... | |
| virtual bool | Locked (void) const |
| Returns if the node is locked. Should be overridden in derived classes. More... | |
| virtual void | SetLocked (bool b) |
| Sets the locking of the node. Should be overridden in derived classes. More... | |
| virtual bool | HiddenFromUI (void) const |
| Returns true if the node cannot be seen from UI. More... | |
| virtual void | SetHiddenFromUI (bool b) |
| Sets visibility in UI. More... | |
| virtual void | OnLinked (const TreeNode *pOldParent) |
| This function is called then the node is linked to a new parent. More... | |
| virtual void | CheckValidity (Node::DiagnosticLevel iLevel=dgnLevel2) const |
| See the documentation for Node::CheckValidity. More... | |
| QString | UniqueChildName (const TreeNode *pChild, const QString &sPrefix="") const |
| Finds a node name that is unique among the children of this node. More... | |
| virtual void | SetStringID (const QString &sName) |
| This method does the same thing as Node::SetStringID, except it ensures the name is unique among this node's siblings. More... | |
| virtual void | CopyTo (Node *pNode) const |
| Public Member Functions inherited from Node | |
| Node (const QString &sStringID="", const QString &sDisplayName="") | |
| Standard constructor. More... | |
| virtual | ~Node (void) |
| virtual void | Initialize (void) |
| void | LoadTemplate (const QString &sFileName="", bool bStartEvent=false) |
| Use an external XML file to initialize the attributes. More... | |
| void | SaveTemplate (const QString &sFileName="", bool bSaveOnlyVisible=false) |
| Save current attributes as an XML template. More... | |
| unsigned int | Version (void) const |
| Returns the current version of the node. This number increases when the content of the node changed (when ContentChanged() called). More... | |
| void | SetVersion (unsigned int iVersion) |
| Sets the current version number for the node. More... | |
| unsigned int | ReferenceCount (void) const |
| Returns the number of pointers referencing this node. More... | |
| Attribute * | ReferencePointer (unsigned int iIndex) const |
| Returns the address of an attribute which refers to this node. The type of the attribute is always aptr. More... | |
| Node * | ReferenceNode (unsigned int iIndex) const |
| Returns the address of a node referencing this node. More... | |
| virtual QString | Name (const ClassDesc *pClass=0) const |
| Deprecated. More... | |
| virtual void | SetName (const QString &sName) |
| Deprecated. More... | |
| virtual QString | StringID (const ClassDesc *pClass=0) const |
| Returns the string id of the node. More... | |
| virtual QString | DisplayName (void) const |
| Returns the display name of the node. More... | |
| virtual void | SetDisplayName (const QString &sDisplayName) |
| Sets the display name of the node. More... | |
| virtual QString | HelpID (void) const |
| Returns the help entry id of the node. Can be overwritten in derived classes. More... | |
| virtual void | SetHelpID (const QString &sHelpID) |
| Sets the help entry id of the node. More... | |
| void | Annex (Node *pSource, const QString &sCategory="") |
| Relink all the attributes of the source node to this one. More... | |
| bool | IsKindOf (const ClassDesc *pClass) const |
| Returns true if this node is derived from the pClass class. More... | |
| void | ContentChanged (void) const |
| This function must be called if the content of the node is changed. More... | |
| virtual Node * | Duplicate (void) const |
| virtual void | OnNodeEvent (const Attribute &cAttribute, NodeEventType cType) |
| This function is called if an event occurs with any of the attributes of the node. More... | |
| virtual void | OnEvent (const EventGate &cEvent) |
| This function is called when a generic event occurs. See EventGate class. More... | |
| void | RequestDeferredEvent (Attribute &cAttribute) |
| Request for a deferred event, which will occur only in the main loop. More... | |
| unsigned int | AttributeCount (void) const |
| Returns the number of attributes owned by the node. More... | |
| Attribute * | AttributeByIndex (int iIndex) const |
| Returns a specified attribute (or 0 if iIndex is greater than the number of attributes). More... | |
| Attribute * | AttributeByName (const QString &sName) const |
| Returns a specified attribute by its name. Returns 0 if the attribute not found. More... | |
| Attribute * | AttributeByID (const QString &sID) const |
| Returns a specified attribute by its ID. Returns 0 if the attribute not found. More... | |
| void | SetAttributeValue (const QString &sAttributeID, const QString &sNewValue) |
| Set the value of an attribute from a string. More... | |
| QString | AttributeValue (const QString &sAttributeID) const |
| Returns the current value of an attribute as a string. More... | |
| void | LogAttributes (void) const |
| Write all attributes into the log file. More... | |
| virtual QWidget * | CreatePropertiesWindow (QWidget *pParent) |
| Create a window which displays the attributes of the node. Can be overriden to provide a custom interface. More... | |
| Attribute * | AddAttribute (Attribute::AttributeType type, const QString &id) |
| Allows SDK users to add attributes at runtime. More... | |
| Node * | Next (void) const |
| Returns the next node in the chain. Used to enumerate the current nodes. See also First(). More... | |
| int | ID (void) const |
| Returns an ID for the node. The ID is unique in the whole application life. More... | |
| bool | SetID (int iID) |
| Set ID for the node. More... | |
| Static Public Member Functions inherited from Node | |
| static void | StartHashing () |
| This is called once in main once static ctors are done. More... | |
| static Node * | First (void) |
| This function will return the first node in the memory. Used to enumerate all the current nodes. See also Next(). More... | |
| static Node * | ByID (int iID) |
| Returns the node with the specified ID, or zero if such a node does not exists. More... | |
| static Node * | ByName (const QString &sClass, const QString &sName) |
| Search for a node with the name sName. More... | |
| Public Attributes inherited from TreeNode | |
| DECLARE_CLASS | |
| Public Attributes inherited from Node | |
| AttributeThisPointer | m_pThis |
| DECLARE_CLASS | |
The documentation for this class was generated from the following file:
- MapExtractor/MapExtractorInterface.h