kanzi::ClearRenderPass Class Reference

Use a Clear Render Pass to clear the color, depth, and stencil buffers of the current render context before passing the control to the descendants of this render pass. More...

#include <kanzi/core.ui/graphics3d/clear_render_pass.hpp>

Inheritance diagram for kanzi::ClearRenderPass:
kanzi::RenderPass kanzi::Resource kanzi::Object kanzi::MetaObject kanzi::PropertyObject

Static Public Member Functions

static PropertyTypeEditorInfoSharedPtr makeEditorInfo ()
 
static ClearRenderPassSharedPtr create (Domain *domain, string_view name)
 Creates a Clear Render Pass. More...
 
- Static Public Member Functions inherited from kanzi::RenderPass
static PropertyTypeEditorInfoSharedPtr makeEditorInfo ()
 
static RenderPassSharedPtr create (Domain *domain, string_view name)
 Create a render pass. More...
 
static ResourceManager::LoadTaskSharedPtr createLoadTask (string_view name, KzbFile *kzbFile, unique_ptr< ReadOnlyMemoryFile > file)
 Factory function for RenderPass Load Task, which loads a RenderPass from a kzb file. More...
 
- Static Public Member Functions inherited from kanzi::Object
static const MetaclassgetStaticMetaclass ()
 Returns the metaclass of Object class. More...
 
static PropertyTypeEditorInfoSharedPtr makeEditorInfo ()
 Default implementation that returns empty editor info. More...
 
- Static Public Member Functions inherited from kanzi::MetaObject
static const MetaclassgetStaticMetaclass ()
 Returns the metaclass of Object class. More...
 
static PropertyTypeEditorInfoSharedPtr makeEditorInfo ()
 Default implementation that returns empty editor info. More...
 

Protected Member Functions

 ClearRenderPass (Domain *domain, string_view name)
 Constructor. More...
 
virtual void renderOverride (Renderer3D &renderer, TransformedScene3D &transformedScene, CompositionStack &compositionStack) KZ_OVERRIDE
 RenderPass::renderOverride() implementation. More...
 
virtual CompositionRequirements getCompositionRequirements () const KZ_OVERRIDE
 RenderPass::requiresDepthBuffer() implementation. More...
 
- Protected Member Functions inherited from kanzi::RenderPass
 RenderPass (Domain *domain, string_view name)
 Constructor. More...
 
virtual void onLoaded ()
 Override function called by createLoadTask(), after loading render pass. More...
 
void loadChildRenderPassesFromKZB (ResourceManager &resourceManager, KzbMemoryParser &parser)
 Load child render passes from a kzb file. More...
 
void loadProperties (KzbMemoryParser &parser)
 Reimplementation of the loadProperties from parser to accommodate paths in properties. More...
 
kzsError readProperties (struct KzcInputStream *inputStream, const struct KzuBinaryFileInfo *file, ResourceManager *resourceManager)
 Reimplementation of the property reading to accommodate paths in properties. More...
 
kzsError readProperty (struct KzcInputStream *inputStream, const struct KzuBinaryFileInfo *file, ResourceManager *resourceManager)
 Reimplementation of reading a single property to accommodate paths in properties. More...
 
void renderChildren (Renderer3D &renderer, TransformedScene3D &transformedScene, CompositionStack &compositionStack)
 Render all child render passes of a render pass. More...
 
CompositionRequirements combineChildCompositionRequirements (CompositionRequirements requirements) const
 Iterates the children for composition requirements. More...
 
CompositionRequirements getChildCompositionRequirements () const
 Iterates the children for composition requirements. More...
 
virtual void renderMeshOverride (Node3D &node, Morph *morph, Mesh &mesh, unsigned int clusterIndex, MaterialRenderer &materialRenderer)
 Mesh rendering that is specific for a render pass. More...
 
virtual TextureSharedPtr getCompositionResultOverride (Framebuffer::AttachmentPoint attachmentPoint)
 Acquiring of composition target specific to the RenderPass class. More...
 
- Protected Member Functions inherited from kanzi::Resource
virtual void reloadOverride ()
 
virtual void reloadFromKzbOverride (KzcInputStream *inputStream, const KzuBinaryFileInfo *file)
 
virtual void reloadFromKzbOverride (KzbFile &kzbFile, ReadOnlyMemoryFile &file, KzbMemoryParser &parser)
 
virtual void reloadFromFileOverride (string_view filePath)
 
virtual unsigned int getCPUMemoryUsageOverride () const
 
- Protected Member Functions inherited from kanzi::Object
void initialize ()
 
void onCopy (const Object &other)
 
- Protected Member Functions inherited from kanzi::MetaObject
 MetaObject ()
 
void initialize ()
 
- Protected Member Functions inherited from kanzi::PropertyObject
void addPropertyValueSource (AbstractPropertyTypeDescriptor &descriptor, AbstractPropertyTypeDescriptor::ValueSource *valueSource, PropertyValuePrecedence precedence, void *owner)
 
void removePropertyValueSource (AbstractPropertyTypeDescriptor &descriptor, AbstractPropertyTypeDescriptor::ValueSource *valueSource, void *owner)
 
AbstractPropertyTypeDescriptor::ValueSourceEntrygetTopValueSourceEntry (AbstractPropertyTypeDescriptor::PropertyStorage &propertyStorage) const
 
AbstractPropertyTypeDescriptor::ValueSourceEntrygetTopValueSourceEntry (AbstractPropertyTypeDescriptor &descriptor) const
 
AbstractPropertyTypeDescriptor::ValueSourcegetTopValueSource (AbstractPropertyTypeDescriptor &descriptor) const
 
AbstractPropertyTypeDescriptor::ValueSourcegetFinalValueSource (AbstractPropertyTypeDescriptor &descriptor) const
 
AbstractPropertyTypeDescriptor::ValueSourcegetNonClassValueSource (AbstractPropertyTypeDescriptor &descriptor) const
 
AbstractPropertyTypeDescriptor::ValueSourcegetClassValueSource (AbstractPropertyTypeDescriptor &descriptor) const
 
AbstractPropertyTypeDescriptor::ValueSourceEntryfindLocalValueSourceEntry (AbstractPropertyTypeDescriptor::PropertyStorage &propertyStorage)
 
AbstractPropertyTypeDescriptor::ValueSourceEntryconstructLocalValueSourceEntry (AbstractPropertyTypeDescriptor &descriptor, AbstractPropertyTypeDescriptor::PropertyStorage &propertyStorage)
 
AbstractPropertyTypeDescriptor::ValueSourceEntryacquireLocalValueSourceEntry (AbstractPropertyTypeDescriptor &descriptor, PropertyStoragePtr &propertyStorage)
 
AbstractPropertyTypeDescriptor::PropertyStoragefindPropertyStorage (AbstractPropertyTypeDescriptor &descriptor) const
 
PropertyStoragePtr findPropertyStoragePtr (AbstractPropertyTypeDescriptor &descriptor) const
 Gets property storage intrusive pointer that can be used to hold a reference until end of operation. More...
 
PropertyStoragePtr constructPropertyStorage (AbstractPropertyTypeDescriptor &descriptor)
 
PropertyStoragePtr acquirePropertyStorage (AbstractPropertyTypeDescriptor &descriptor)
 
AbstractPropertyTypeDescriptor::ModifierStorageacquireModifierStorage (AbstractPropertyTypeDescriptor &descriptor, AbstractPropertyTypeDescriptor::PropertyStorage &propertyStorage)
 
AbstractPropertyTypeDescriptor::ModifierStoragefindModifierStorage (AbstractPropertyTypeDescriptor &descriptor)
 
AbstractPropertyTypeDescriptor::NotificationStorageacquireNotificationStorage (AbstractPropertyTypeDescriptor &descriptor)
 
AbstractPropertyTypeDescriptor::NotificationStoragefindNotificationStorage (AbstractPropertyTypeDescriptor &descriptor)
 
AbstractPropertyTypeDescriptorfindPropertyTypeDescriptorByUnqualifiedNameAndDataType (string_view unqualifiedName, PropertyDataType dataType)
 
void validatePropertyModifiersAndNotifyHandlers (PropertyStoragePtr &propertyStorage)
 
void copyLocalValue (const AbstractPropertyTypeDescriptor::PropertyStorage &otherPropertyStorage)
 Copy local value from property storage. More...
 
PropertyStorageContainer::iterator beginPropertyStorage ()
 
PropertyStorageContainer::iterator endPropertyStorage ()
 
virtual void notifyPropertyHandlers (PropertyStoragePtr &propertyStorage, PropertyNotificationReason reason)
 
void onCopy (const PropertyObject &other)
 

Properties

static PropertyType< ColorRGBAClearColorProperty
 Use the Clear Color property to set the color that you want the Clear Render Pass to use to clear the color buffer. More...
 
static PropertyType< float > ClearDepthProperty
 Use the Clear Depth property to set the depth that you want the Clear Render Pass to use to clear the depth buffer. More...
 
static PropertyType< int > ClearStencilProperty
 Use the Clear Stencil property to set the clear stencil that you want the Clear Render Pass to use to clear the stencil buffer. More...
 
ColorRGBA getClearColor () const
 Gets the value of the ClearColorProperty property. More...
 
void setClearColor (ColorRGBA value)
 Sets the value of the ClearColorProperty property. More...
 
float getClearDepth () const
 Gets the value of the ClearDepthProperty property. More...
 
void setClearDepth (float value)
 Sets the value of the ClearDepthProperty property. More...
 
int getClearStencil () const
 Gets the value of the ClearStencilProperty property. More...
 
void setClearStencil (int value)
 Sets the value of the ClearStencilProperty property. More...
 

Additional Inherited Members

- Public Types inherited from kanzi::RenderPass
typedef vector< RenderPassSharedPtrChildContainer
 
- Public Types inherited from kanzi::PropertyObject
typedef intrusive_ptr< AbstractPropertyTypeDescriptor::PropertyStoragePropertyStoragePtr
 
typedef vector< PropertyStoragePtrPropertyStorageContainer
 
typedef PropertyStorageContainer::iterator PropertyStorageIterator
 
typedef PropertyStorageContainer::const_iterator PropertyStorageConstIterator
 
typedef PropertyStorageContainer::reverse_iterator PropertyStorageReverseIterator
 
- Public Member Functions inherited from kanzi::RenderPass
RenderPassSharedPtr lookupRenderPass (string_view path)
 Resolve a render pass by path. More...
 
void render (Renderer3D &renderer, TransformedScene3D &transformedScene, CompositionStack &compositionStack)
 Recursively render RenderPass and all of its child render passes. More...
 
void renderMesh (Node3D &node, Morph *morph, Mesh &mesh, unsigned int clusterIndex, MaterialRenderer &materialRenderer)
 Use this function to render a mesh owned by a node using the material renderer that the node owns. More...
 
void addChild (RenderPassSharedPtr childRenderPass)
 Adds a render pass as the last child of the render pass you set. More...
 
void insertChild (size_t index, RenderPassSharedPtr childRenderPass)
 Adds a render pass as a child render pass at given index of the render pass you set. More...
 
void removeChild (RenderPass &childRenderPass)
 Removes a child render pass. More...
 
void removeAllChildren ()
 Removes all child render passes from a render pass. More...
 
RenderPassSharedPtr getParent () const
 Gets the parent of a render pass. More...
 
void setParent (RenderPassSharedPtr parent)
 Sets the parent of a render pass. More...
 
RenderPassSharedPtr getChild (size_t index)
 Gets a child render pass at the given index. More...
 
size_t getChildCount () const
 Returns the number of child render passes. More...
 
ChildContainer::const_iterator beginChildren () const
 Returns an iterator to the beginning of the container of child render passes. More...
 
ChildContainer::const_iterator endChildren () const
 Returns an iterator to the end of the container of child render passes. More...
 
TextureSharedPtr getCompositionResult (Framebuffer::AttachmentPoint attachmentPoint)
 Gets color composition target that was used for rendering. More...
 
size_t getTextureBindingCount () const
 Gets the number of texture bindings. More...
 
ResourceBinding getTextureBinding (size_t index) const
 Gets a texture binding by index. More...
 
void addTextureBinding (AbstractPropertyType propertyType, string_view path, bool fromKzb)
 Adds a texture binding. More...
 
void addTextureBinding (AbstractPropertyType propertyType, string_view path)
 Adds a texture binding. More...
 
bool removeTextureBinding (AbstractPropertyType propertyType)
 Removes the texture binding. More...
 
void removeKzbTextureBindings ()
 Removes the resource bindings loaded from kzb files. More...
 
void restoreResourcesRecursive ()
 Recursively calls restoreResources for a RenderPass and all its children. More...
 
virtual void restoreResources ()
 Restore resources after suspend. More...
 
virtual void loadFromKZB (const ResourceLoaderThreadContext *threadContext, KzcInputStream *inputStream, const KzuBinaryFileInfo *file) KZ_OVERRIDE
 Resource::loadFromKZB() implementation. More...
 
- Public Member Functions inherited from kanzi::Resource
KzcMemoryManagergetMemoryManager () const
 
 Resource (Domain *domain, string_view name)
 
virtual ~Resource ()
 
virtual void unloadOverride ()
 Unload function for resource. Releases all CPU memory taken by the resource except the resource loader. More...
 
virtual unsigned int getCPUMemoryUsage () const
 Function for getting the memory usage of a resource. More...
 
void setKZB (const KzuBinaryDirectory *binaryDirectory, string_view path)
 Set the binary directory and path of the resource. More...
 
const string & getName () const
 Gets the resource name. More...
 
const string & getUrl () const
 Gets the resource URL. More...
 
void setUrl (string_view url)
 Sets the resource URL. More...
 
void setNotLoaded ()
 
bool isFromKZB () const
 
void reload ()
 
void reloadFromKzb (KzcInputStream *inputStream, const KzuBinaryFileInfo *file)
 
void reloadFromKzb (KzbFile &kzbFile, ReadOnlyMemoryFile &file, KzbMemoryParser &parser)
 
void reloadFromFile (string_view filePath)
 
void load ()
 
void unload ()
 
bool isLoaded () const
 
void kzuResourceLoad_private (const ResourceLoaderThreadContext *threadContext)
 Private function for kzuResourceLoad() with specified thread context. More...
 
void kzuResourceFinishLoading_private (const ResourceLoaderThreadContext *threadContext)
 Private function for finishing the loading of the resource. More...
 
bool isKeepAlive () const
 Tells if the resource has keep alive flag set. More...
 
void setKeepAlive (bool keepAlive)
 Sets the keep alive flag. More...
 
- Public Member Functions inherited from kanzi::Object
 Object (Domain *domain)
 
virtual ~Object ()
 
DomaingetDomain () const
 Returns the domain the object belongs to. More...
 
KzuTaskSchedulergetTaskScheduler () const
 Returns the task scheduler of the object. More...
 
KzuMessageDispatchergetMessageDispatcher () const
 Returns the message dispatcher of the object. More...
 
ResourceManagergetResourceManager () const
 Returns the resource manager of the object. More...
 
virtual const MetaclassgetDynamicMetaclass () const KZ_OVERRIDE
 Returns the metaclass of the dynamic type of the object. More...
 
AppliedStyleEntrySharedPtr applyObjectStyle (kanzi::StyleSharedPtr style)
 Applies a style to an object. More...
 
void unapplyObjectStyle (AppliedStyleEntrySharedPtr appliedStyleEntry)
 
void applyObjectStyles ()
 Apply all styles for an object node. More...
 
void unapplyObjectStyles ()
 Unapplies and removes all applied styles. More...
 
- Public Member Functions inherited from kanzi::MetaObject
virtual ~MetaObject ()
 
bool isTypeOf (const Metaclass *objectType) const
 Determines if the type of this object is the given type or derived from it. More...
 
- Public Member Functions inherited from kanzi::PropertyObject
 PropertyObject ()
 
virtual ~PropertyObject ()
 
template<typename DataType >
void setProperty (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Traits::ParameterType value)
 Sets the local value of a property. More...
 
void removeKzbProperties ()
 
template<typename DataType >
PropertyType< DataType >::Traits::ReturnType getProperty (const PropertyType< DataType > &propertyType) const
 Returns the current value of a property. More...
 
template<typename DataType >
optional< typename PropertyType< DataType >::Traits::ReturnType > getOptionalProperty (const PropertyType< DataType > &propertyType) const
 Evaluates the property value in the same way as the overload above but does not default to the value in property metadata if there are no inputs to the property value. More...
 
template<typename DataType >
PropertyType< DataType >::Traits::ReturnType getPropertyBase (const PropertyType< DataType > &propertyType) const
 Returns the current value of a property disregarding modifiers. More...
 
template<typename DataType >
void setAbstractProperty (AbstractPropertyType abstractPropertyType, typename PropertyType< DataType >::Traits::ParameterType value)
 
template<typename DataType >
PropertyType< DataType >::Traits::ReturnType getAbstractProperty (AbstractPropertyType abstractPropertyType) const
 
template<typename DataType >
PropertyType< DataType >::Traits::ReturnType getAbstractPropertyBase (AbstractPropertyType abstractPropertyType) const
 
template<typename DataType >
optional< typename PropertyType< DataType >::Traits::ReturnType > getOptionalAbstractProperty (AbstractPropertyType abstractPropertyType) const
 
void setPropertyFlag (AbstractPropertyType propertyType, uint32_t flag)
 
bool isPropertyFlagSet (AbstractPropertyType propertyType, uint32_t flag) const
 
void clearPropertyFlag (AbstractPropertyType propertyType, uint32_t flag)
 
bool hasValue (AbstractPropertyType propertyType) const
 Evaluates whether there are any inputs into the property value. More...
 
bool hasBaseValue (AbstractPropertyType propertyType) const
 Evaluates whether there are any inputs into the property value, disregarding modifiers. More...
 
bool hasLocalValue (AbstractPropertyType propertyType) const
 Evaluates whether there is a local value set for the property. More...
 
bool hasNonClassValue (AbstractPropertyType propertyType) const
 Evaluates whether there is a value of any precedence higher than class default value set for the property. More...
 
void removeLocalValue (AbstractPropertyType propertyType)
 Removes the local value associated with the property. More...
 
void copyLocalValue (const PropertyObject &other, AbstractPropertyType propertyType)
 Copies local value of single property from another object. More...
 
void copyLocalValues (const PropertyObject &other)
 Copies all local values from another object. More...
 
virtual void onPropertyChanged (AbstractPropertyType propertyType, PropertyNotificationReason reason)
 Virtual function to handle property change notifications. More...
 
template<typename DataType >
void addPropertyValueSource (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::TypedValueSource *valueSource, PropertyValuePrecedence precedence, void *owner)
 
template<typename DataType >
void removePropertyValueSource (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::TypedValueSource *valueSource, void *owner)
 
template<typename DataType >
void addPropertyModifier (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::ModifierCallback callback, void *owner)
 
template<typename DataType >
void removePropertyModifier (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::ModifierCallback callback, void *owner)
 
void validatePropertyModifiers (AbstractPropertyType propertyType)
 
template<typename DataType >
void addPropertyNotificationHandler (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::NotificationCallback callback, void *owner)
 
template<typename DataType >
void removePropertyNotificationHandler (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::NotificationCallback callback, void *owner)
 
template<typename DataType >
size_t getPropertyNotificationHandlerCount (const PropertyType< DataType > &propertyType)
 Gets number of current notification handlers for given property type. More...
 
- Protected Types inherited from kanzi::Object
typedef vector< AppliedStyleEntrySharedPtrAppliedStyleContainer
 Applied style container. More...
 
- Protected Attributes inherited from kanzi::Object
AppliedStyleContainer m_appliedStyles
 Listing of applied styles applied to this object. More...
 

Detailed Description

Use a Clear Render Pass to clear the color, depth, and stencil buffers of the current render context before passing the control to the descendants of this render pass.

When you create a Clear Render Pass using the API, it does not clear any buffers. However, when you create a Clear Render Pass in Kanzi Studio, the render pass clears the depth buffer.

You control which buffers a Clear Render Pass clears by setting in the render pass the properties for those buffers. To disable the clearing of a buffer, remove from that render pass the property for the buffer the clearing of which you want to disable.

Clear values

Valid value for the ClearColorProperty property is any RGBA color. Values for each color range from 0.0f to 1.0f. When using the Clear Render Pass in Kanzi Studio, the most common use cases include clearing to either transparent black or any given opaque color. ColorRGBA::TransparentBlack is synonymous to ColorRGBA(0.0f, 0.0f, 0.0f, 0.0f) and provided for convenience.

Valid range for values in the ClearDepthProperty property is from 0.0f to 1.0f. 1.0f represents the largest possible value in the depth buffer and is the most commonly used value. Unless you want to achieve a very specific effect, set the value of the ClearDepthProperty property to either 1.0f or do not set the value at all.

Valid range for values for the ClearStencilProperty property is from 0 to 255. Since the stencil buffer is usually 8 bits, this means any 8-bit unsigned integer. For example, use the ClearStencilProperty property, to reset the stencil buffer before masking areas in it.

Examples

To create a Clear Render Pass and set it to clear buffers:

// Create a Clear Render Pass.
ClearRenderPassSharedPtr clearRenderPass = ClearRenderPass::create(domain, "Clear Render Pass");
// Set the clear depth to 1.0f, the highest possible depth.
// All depth comparisons using depth test function "less" pass after the clear.
clearRenderPass->setClearDepth(1.0f);
// Set the Clear Color property to transparent black.
clearRenderPass->setClearColor(ColorRGBA(0.0f, 0.0f, 0.0f, 0.0f));

Constructor & Destructor Documentation

kanzi::ClearRenderPass::ClearRenderPass ( Domain domain,
string_view  name 
)
explicitprotected

Constructor.

Parameters
domainThe domain to use.
nameThe name of the Clear Render Pass.

Member Function Documentation

ColorRGBA kanzi::ClearRenderPass::getClearColor ( ) const
inline

Gets the value of the ClearColorProperty property.

See also
setClearColor()
void kanzi::ClearRenderPass::setClearColor ( ColorRGBA  value)
inline

Sets the value of the ClearColorProperty property.

See also
getClearColor()
float kanzi::ClearRenderPass::getClearDepth ( ) const
inline

Gets the value of the ClearDepthProperty property.

See also
setClearDepth()
void kanzi::ClearRenderPass::setClearDepth ( float  value)
inline

Sets the value of the ClearDepthProperty property.

See also
getClearDepth()
int kanzi::ClearRenderPass::getClearStencil ( ) const
inline

Gets the value of the ClearStencilProperty property.

See also
setClearStencil()
void kanzi::ClearRenderPass::setClearStencil ( int  value)
inline

Sets the value of the ClearStencilProperty property.

See also
getClearStencil()
static PropertyTypeEditorInfoSharedPtr kanzi::ClearRenderPass::makeEditorInfo ( )
static
static ClearRenderPassSharedPtr kanzi::ClearRenderPass::create ( Domain domain,
string_view  name 
)
static

Creates a Clear Render Pass.

Parameters
domainThe domain to use.
nameThe name of the Clear Render Pass.
Returns
The created Clear Render Pass.
virtual void kanzi::ClearRenderPass::renderOverride ( Renderer3D renderer,
TransformedScene3D transformedScene,
CompositionStack compositionStack 
)
protectedvirtual

RenderPass::renderOverride() implementation.

Reimplemented from kanzi::RenderPass.

virtual CompositionRequirements kanzi::ClearRenderPass::getCompositionRequirements ( ) const
protectedvirtual

RenderPass::requiresDepthBuffer() implementation.

Reimplemented from kanzi::RenderPass.

Member Data Documentation

PropertyType<ColorRGBA> kanzi::ClearRenderPass::ClearColorProperty
static

Use the Clear Color property to set the color that you want the Clear Render Pass to use to clear the color buffer.

The default value is ColorRGBA(0.4f, 0.4f, 0.4f, 1.0f).

See also
setClearColor(), getClearColor()
PropertyType<float> kanzi::ClearRenderPass::ClearDepthProperty
static

Use the Clear Depth property to set the depth that you want the Clear Render Pass to use to clear the depth buffer.

The default value is 1.0f.

See also
setClearDepth(), getClearDepth()
PropertyType<int> kanzi::ClearRenderPass::ClearStencilProperty
static

Use the Clear Stencil property to set the clear stencil that you want the Clear Render Pass to use to clear the stencil buffer.

The default value is 0.

See also
setClearStencil(), getClearStencil()

The documentation for this class was generated from the following file: