#include <PixelIop.h>
Public Member Functions | |
virtual void | pixel_engine (const Row &in, int y, int x, int r, ChannelMask, Row &)=0 |
PixelIop (Node *node) | |
unsigned | node_color () const override |
OpHints | opHints () const override |
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void | fetchPlane (ImagePlane &imagePlane) |
virtual PlanarI * | getPlanarI () |
void | force_validate (bool for_real=true) override |
IopImpl * | pImpl () |
virtual void | engine (int y, int x, int r, ChannelMask, Row &)=0 |
Iop * | iop () override |
Cast to an Iop. This is much cheaper and safer than using dynamic_cast. | |
const Iop * | iop () const override |
~Iop () override | |
virtual bool | isBlackIop () const |
bool | test_input (int, Op *) const override |
Op * | default_input (int) const override |
Iop * | input (int n) const |
Iop * | input (int n, int m) const |
Iop & | input0 () const |
Iop & | input1 () const |
Cache * | cache () const |
bool | cached () const |
void | cached (bool b) |
virtual void | in_channels (int, ChannelSet &) const |
ChannelMask | out_channels () const |
int | raw_channels_from () const |
virtual bool | pass_transform () const |
void | request (int x, int y, int r, int t, ChannelMask channels, int count) |
void | request (DD::Image::Box box, ChannelMask channels, int count) |
void | request (ChannelMask channels, int count) |
void | _copyState (Iop *input) |
const Box & | requestedBox () const |
const Box & | unclampedRequestedBox () const |
ChannelMask | requested_channels () const |
ChannelMask | multi_requested_channels () const |
ChannelMask | unclamped_requested_channels () const |
int | requested_count () const |
virtual void | get (int y, int x, int r, ChannelMask, Row &) |
void | at (int x, int y, Pixel &out) |
float | at (int x, int y, Channel) |
ChannelSet | peek (int x, int y, int r, int t, Pixel &out) |
bool | peek (int x, int y, int w, int h, ChannelMask pixelChannels, PixelCallbackI &callback) |
virtual Transform * | getTransform () |
TextureImageInfo | getTextureImageInfo (int maxWidth, int maxHeight, bool extractBbox=true, bool keepImageAspect=false) const |
TextureImageInfo::UVTransform | getTextureTransform () const |
virtual bool | set_texturemap (ViewerContext *, bool gl=true) |
virtual TextureImage | get_texturemap (ViewerContext *ctx) |
virtual void | unset_texturemap (ViewerContext *) |
virtual bool | shade_GL (ViewerContext *, GeoInfo &) |
virtual void | vertex_shader (VertexContext &) |
virtual void | fragment_shader (const VertexContext &, Pixel &out) |
virtual void | displacement_shader (const VertexContext &vtx, VArray &out) |
virtual float | displacement_bound () const |
virtual void | blending_shader (const Pixel &in, Pixel &out) |
virtual void | render_state (GeoInfoRenderState &state) |
virtual void | sample (float cx, float cy, float w, float h, Filter *, Pixel &out) |
void | sample (float cx, float cy, float w, float h, Pixel &out) |
virtual void | sample (const Vector2 ¢er, const Vector2 &dU, const Vector2 &dV, Filter *filter, Pixel &out) |
void | sample (const Vector2 ¢er, const Vector2 &dU, const Vector2 &dV, Pixel &out) |
virtual float | sample_shadowmap (Iop *map, bool map_is_one_over_z, float cx, float cy, float W, float H, Filter *filter, float Pz) |
void | build_handles (ViewerContext *) override |
virtual void | inputsAttached () |
virtual void | gpuEngine_useTextureTransform (bool useTransform) |
GPU support code. | |
virtual void | gpuEngine_setupTextureTransform (const Matrix4 &postOpTransform) |
virtual const char * | gpuEngine_decl () const |
virtual const char * | gpuEngine_body () const |
virtual Hash | gpuEngine_shader_hash_at (double time) |
virtual int | gpuEngine_getNumRequiredTexUnits () const |
virtual void | gpuEngine_GL_begin (GPUContext *context) |
virtual void | gpuEngine_GL_end (GPUContext *context) |
virtual Iop * | viewerPassThrough () const |
OpHints | opHints () const override |
Return hints to control when and how this op will be evaluated by the top-down system. | |
virtual void | setExtendedOpProperties (std::shared_ptr< ExtendedOpProperties > extendedOpProperties) |
Sets the pointer to object implementing extended properties. | |
virtual std::shared_ptr< ExtendedOpProperties > | getExtendedOpProperties () const |
Returns the pointer to object implementing extended properties. | |
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PrevalidateResult | preValidate (ViewerContext *ctx=nullptr, PreValidateContext *=nullptr) |
Op * | rootOp () const |
bool | preValidateAborted (int treeStartingVersion, PrevalidateResult &result) const |
const OutputSet & | getOutputs () const |
return all the outputs of this node | |
virtual void | setInputsValid (bool nowValid) |
set whether the input ops are valid (are for the right context) | |
bool | inputsValid () const |
return whether the input ops are valid (are for the right context) | |
virtual bool | can_clone () const |
returns whether or not an op can be cloned in the dag | |
bool | haveHash () const |
return true if the hash() value is meaningful and globally unique | |
bool | varyingOutputHash () const |
void | setVaryingOutputHash (bool varyingHashes) |
Set the varyingOutputHash indicator to a specific state. | |
void | enableVaryingOutputHash () |
Enable the varyingOutputHash indicator. | |
virtual Hash | editState () const |
virtual void | setEditState (const Hash &h) |
virtual std::vector< DD::Image::OutputContext > | getPrevVersionsWanted () const |
virtual const MetaData::Bundle & | _fetchMetaData (const char *keyname) |
const MetaData::Bundle & | fetchMetaData (const char *keyname) |
Node * | node () const |
DD::Image::NodeI * | getNode () const |
void | node (Node *v) |
const char * | nodeName () const |
Return NodeI::name() which is the Node's local name with no parent path. | |
std::string | nodeFullPath (char separator='.') const |
Hash | nodeTopologyHash () const |
Op * | firstOp () const |
void | firstOp (Op *v) |
Op * | parent () const |
void | parent (Op *lpOp) |
virtual void | detach () |
node has been deleted in DAG | |
virtual void | attach () |
node has been created in DAG | |
virtual void | pre_write_knobs () |
void | knobStorePrep (const OutputContext &storeContext) |
virtual void | knobs (Knob_Callback) |
void | knobStorePost (const OutputContext &storeContext, Hash &hash) |
int | replace_knobs (Knob *afterthis, int n, void(*f)(void *, Knob_Callback), void *, const char *fileExt=nullptr) |
int | add_knobs (void(*f)(void *, Knob_Callback), void *, Knob_Callback) |
void | set_unlicensed () |
Knob * | knob (const char *name) const |
Knob * | knob (int) const |
bool | pushed () const |
bool | panel_visible () const |
bool | node_disabled () const |
bool | node_selected () const |
unsigned | node_gl_color () const |
void * | field (const char *name) |
void * | field (const char *name, int &type) |
void * | set_field (const char *name, const void *source, int size) |
void * | get_field (const char *name, void *dest, int size) |
void | beginHandle (HandleType command, ViewerContext *ctx, EventCallback *cb, int index, float x=0, float y=0, float z=0, ViewerContext::Cursor cursor=ViewerContext::kNoCursor) |
void | endHandle (ViewerContext *ctx) |
virtual int | knob_changed (Knob *) |
virtual int | knob_change_finished (Knob *knob, bool changedByUser=true) |
void | addTime (OpTimer::Category category, long long microsecondsCPU, long long microsecondsWall, bool isTopLevel=true) |
void | getPerformanceInfo (OpTimer::Category category, OpTimer::PerformanceInfo &info) const |
return the amount of CPU time taken by this op | |
virtual bool | inputs_clockwise () const |
whether unconnected inputs on the DAG should be arranged clockwise or anticlockwise (default) | |
virtual std::vector< int > | input_order () const |
virtual int | inputArrows (int nodeInputs) const |
bool | script_command (const char *command, bool py=true, bool eval=true) const |
bool | script_expand (const char *str) const |
HandlesMode | anyHandles (ViewerContext *ctx) |
virtual void | build_handles (ViewerContext *) |
void | add_draw_handle (ViewerContext *) |
virtual void | draw_handle (ViewerContext *) |
virtual void | add_input_handle (int input, ViewerContext *) |
void | add_op_handle (ViewerContext *ctx) |
void | add_knob_handle (Knob *, ViewerContext *) |
virtual int | getViewableModes () const |
virtual int | optional_input () const |
virtual int | minimum_inputs () const |
virtual int | maximum_inputs () const |
virtual bool | test_input (int, Op *) const |
int | inputs () const |
int | node_inputs () const |
Op * | node_input (int, GenerateType=OUTPUT_OP) const |
Op * | node_input (int, GenerateType, const DD::Image::OutputContext *outputContext) const |
Op * | input_op (int n=0) const |
virtual void | inputs (int n) |
Op * | input (int) const |
int | inputNumber (int input, int offset) const |
Op * | input (int input, int offset) const |
Op * | input0 () const |
return the primary input | |
Op * | input1 () const |
return the second input, if it exists | |
const std::vector< Op * > & | getInputs () const |
const std::vector< Op * > & | getChildren () const |
virtual void | set_input (int i, Op *op, int input, int offset) |
void | set_input0 (Op *op) |
void | set_input (int i, Op *op) |
void | set_input (int i, Op &op) |
void | set_input (int input, int offset, Op *op) |
const OutputContext & | outputContext () const |
virtual void | setOutputContext (const OutputContext &c) |
virtual void | append (Hash &) |
virtual float | uses_input (int) const |
virtual void | build_splits () |
virtual int | split_input (int) const |
virtual const OutputContext & | inputContext (int n, int offset, OutputContext &) const |
virtual const OutputContext * | inputUIContext (int n, OutputContext &) const |
virtual Op * | default_input (int) const |
const Hash & | hash () const |
virtual bool | frameTransformImplemented () const |
virtual bool | frameTransformDownstream (const OutputContext &context, unsigned int input, float inFrame, float &outFrame) const |
virtual bool | frameTransformUpstream (const OutputContext &context, unsigned int input, float outFrame, float &inFrame) const |
virtual DopeItemFlags::Mask | getDopeItemFlags () const |
virtual bool | shouldHideInDopeSheet (Knob *knob) const |
virtual DD::Image::Knob * | getDopeItemKnob () const |
virtual ViewSet | viewsProduced () const |
virtual ViewSet | viewsWantOn (int i) const |
virtual ViewSet | splitForViews () const |
bool | requested () const |
void | setRequested () |
void | forgetRequestShallow () |
void | forget_request () |
void | forget_request (std::set< Op * > &forgotten) |
virtual const char * | node_shape () const |
DD::Image::Hash | curveHash () const |
bool | opCurrent () const |
virtual unsigned | node_color () const |
virtual const char * | node_help () const =0 |
virtual const char * | input_label (int, char *) const |
virtual std::string | input_longlabel (int) const |
void | node_redraw () |
void | print_name (std::ostream &o) const |
NodeContext | nodeContext () const |
std::string | node_name () const |
Returns the same string as printed by print_name(ostream). | |
void | invalidateSameHash () |
bool | invalidate () |
bool | invalidate (const Hash &hash) |
bool | update (const Box *=nullptr) |
void | asapUpdate () |
void | asapUpdate (const Box &box, int direction=0) |
void | validate (bool for_real=true) |
virtual void | force_validate (bool for_real=true) |
void | update_handles () const |
bool | valid () const |
Returns true if it has been validated - including if there was an error. | |
bool | real_valid () const |
Returns true if it has been real-validated - including if there was an error. | |
bool | inErrorState () const |
bool | inInvalidState () const |
bool | opened () const |
void | open () |
void | unopen () |
bool | running () const |
void | running (bool v) |
bool | not_closed () const |
void | close () |
void | callCloseAfter (double seconds) |
void | copyState (Op *input) |
bool | cached () const |
void | cached (bool b) |
virtual bool | inUse () const |
virtual Executable * | executable () |
void | setKnobsToContext (const OutputContext &, bool force=false) |
void | gotoContext (const OutputContext &, bool update) |
void | progressFraction (double fraction, StatusFlags flags=StatusNone) |
void | progressFraction (int a, int b, StatusFlags flags=StatusNone) |
void | progressMessage (const char *fmt,...) |
void | progressModalMessage (const char *fmt,...) |
void | progressDismiss () |
int | slowness () const |
void | slowness (int newval) |
virtual bool | firstEngineRendersWholeRequest () const |
virtual bool | updateUI (const OutputContext &context) |
const Format & | input_format () const |
const OutputContext & | uiContext () const |
void | error (const char *fmt,...) |
void | warning (const char *fmt,...) |
void | critical (const char *fmt,...) |
void | debug (const char *fmt,...) |
void | abort () const |
Abort all trees the op is in. | |
bool | aborted () const |
True if one of the trees the op is in was aborted; ops should check this while processing and return quickly when true. | |
void | cancel () const |
Cancel all trees the op is in. Make sure you also call abort() to stop processing. | |
bool | cancelled () const |
True if one of the trees the op is in was cancelled (by user interaction) | |
bool | addToTree (OpTree *lpTree) |
Returns true if the op was added to the tree, or false if its reference count increased. | |
bool | removeFromTree (OpTree *lpTree) |
Returns false if the op was removed from the tree, or true if its reference count decreased. | |
bool | isInTree (OpTree *lpTree) const |
Checks if an op is in a particular tree, for debugging purposes. | |
bool | isInAnyTree () const |
Checks if an op is in any tree at all. | |
OpTreeHandler * | getTreeHandler () const |
Returns the treeHandler for a given Op. | |
bool | hasError () const |
bool | opOrChildHasError () const |
const Op * | getErroredOp () const |
void | setPopUpScheme (PopUpScheme lScheme) |
PopUpScheme | getPopUpScheme () const |
bool | arePopUpsEnabled () |
Returns whether a pop-up should be enabled for the next message, modifying internal data when necessary. | |
OpMessageHandler & | getMsgHandler () |
const OpMessageHandler & | getMsgHandler () const |
std::string | getDebugInfo () const |
Returns a string of debug information about the op. For internal use. | |
std::string | getDetailedDebugInfo () const |
bool | tryValidate (bool for_real=true) |
virtual Iop * | iop () |
Cast to an Iop. This is much cheaper and safer than using dynamic_cast. | |
virtual const Iop * | iop () const |
virtual GeoOp * | geoOp () |
Cast to a GeoOp. This is much cheaper and safer than using dynamic_cast. | |
virtual const GeoOp * | geoOp () const |
virtual GeomOp * | geomOp () |
Cast to a GeomOp. This is much cheaper and safer than using dynamic_cast. | |
virtual const GeomOp * | geomOp () const |
virtual ParticleOp * | particleOp () |
Cast to a ParticleOp. This is much cheaper and safer than using dynamic_cast. | |
virtual const ParticleOp * | particleOp () const |
virtual DeepOnlyOp * | deepOnlyOp () |
Cast to a DeepOnlyOp. This is much cheaper and safer than using dynamic_cast. | |
virtual const DeepOnlyOp * | deepOnlyOp () const |
virtual AxisOp * | axisOp () |
Cast to an AxisOp. This is much cheaper and safer than using dynamic_cast. | |
virtual const AxisOp * | axisOp () const |
virtual CameraOp * | cameraOp () |
Cast to an CameraOp. This is much cheaper and safer than using dynamic_cast. | |
virtual const CameraOp * | cameraOp () const |
virtual LightOp * | lightOp () |
Cast to an LightOp. This is much cheaper and safer than using dynamic_cast. | |
virtual const LightOp * | lightOp () const |
virtual std::string | getLibraryName () const |
Return a label and version string to display library version info for the Node. | |
virtual VersionInfo | getLibraryVersion () const |
virtual OpHints | opHints () const |
Return hints to control when and how this op will be evaluated by the top-down system. | |
virtual std::string | resolveKnobAsset (Knob *knob, const std::string &assetPath) |
virtual bool | updateKnobsFromAsset (Knob *knob) |
virtual void | _updateKnobsFromAsset (Knob *assetKnob, const ndk::asset::AssetData &assetData) |
virtual const char * | Class () const =0 |
const std::string | libraryDisplayName () const |
virtual const char * | displayName () const |
virtual std::string | docsPath () const |
virtual bool | onAction (const ViewerContext *c, const DD::Image::Flags f, void *d) |
Op * | get (const Description *description) |
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const Info & | info () const |
int | x () const |
int | y () const |
int | r () const |
int | t () const |
int | w () const |
int | h () const |
bool | is_constant () const |
int | clampx (int x) const |
int | clampy (int y) const |
const Format & | format () const |
const Format & | full_size_format () const |
int | ydirection () const |
bool | black_outside () const |
ChannelMask | channels () const |
const GeneralInfo & | generalInfo () const override |
const Info2D & | info2D () const override |
int | first_frame () const |
int | last_frame () const |
void | format (const Format &f) |
void | full_size_format (const Format &f) |
Protected Member Functions | |
void | engine (int y, int x, int r, ChannelMask, Row &) override |
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Iop (Node *node) | |
void | _invalidate () override |
void | _validate (bool for_real) override |
virtual void | _request (int x, int y, int r, int t, ChannelMask, int count) |
void | _open () override |
void | _close () override |
virtual void | doFetchPlane (ImagePlane &imagePlane) |
bool | inUse () const override |
void | copy_info (int input) |
void | copy_info (int input, ChannelMask) |
void | copy_info () |
void | clear_info () |
void | merge_info (int input=0) |
void | merge_info (int input, ChannelMask) |
void | mergeFrameRange (int input) |
void | set_out_channels (ChannelMask m) |
void | set_out_channels (ChannelSetInit m) |
void | set_out_channels (Channel z) |
void | raw_channels_from (int n) |
void | set_out_channels (ChannelMask m, int n) |
Iop * | asIop (Op *op) const |
Transform * | getDefaultTransform () const |
template<class TileType > | |
void | doSample (float cx, float cy, float w, float h, Filter *, Pixel &out) |
template<class TileType > | |
float | do_sample_shadowmap (Iop *map, bool map_is_one_over_z, float cx, float cy, float W, float H, Filter *filter, float Pz) |
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Op (Node *node) | |
The constructor is protected so only subclasses can create the base class. | |
virtual void | _knobStorePrep (const OutputContext &storeContext) |
The subclass-specific portion of knobStorePrep(). See that method for more info. | |
virtual void | _knobStorePost (const OutputContext &storeContext, Hash &hash) |
The subclass-specific portion of knobStorePost(). See that method for more info. | |
virtual void | _invalidate () |
virtual void | _validate (bool for_real) |
virtual void | _open () |
virtual void | _close () |
Op * | create (Node *node, const char *name) |
Op * | create (const char *name) |
HandlesMode | anyInputHandles (ViewerContext *) |
return if any of the inputs (recursively) wish to draw handles | |
HandlesMode | anyKnobHandles (ViewerContext *) |
return if any of the knobs on this node wish to draw handles | |
void | build_input_handles (ViewerContext *) |
void | build_knob_handles (ViewerContext *) |
void | disallowNoTrees () |
Call this to tell the op that it should always have op trees for normal behaviour (for internal use) | |
virtual HandlesMode | doAnyHandles (ViewerContext *ctx) |
virtual PrevalidateResult | doPreValidate (ViewerContext *ctx=nullptr, PreValidateContext *=nullptr) |
Additional Inherited Members | |
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enum | HandlesMode { eNoHandles , eHandlesUncooked , eHandlesCooked , eHandlesMax } |
enum | PrevalidateResult { eFinished , eCancelled , eAbandoned } |
This is a tribool return value. Do not extend. | |
enum | HandleType { eNone , eMouseLeftClick , eMouseRightClick , eMouseMove , eMouseDrag , eMouseRelease , eSelectionChanged , eSelectionChangeFinished , eHandleDragTranslate , eHandleDragRotate , eHandleDragScale , eHandleDragPivot , eAllHandles } |
enum | ViewableModes { eViewableMode2D , eViewableMode3D , eViewableMode3D_2DReference } |
enum | GenerateType { OUTPUT_OP , ANY_CONTEXT , INPUT_OP , INPUT_OP_PEEK , EXECUTABLE , EXECUTABLE_SKIP , EXECUTABLE_INPUT , UICONTEXT_ONLY } |
enum | NodeContext { eNodeGraph , eTimeline , eOpGraph } |
enum | StatusFlags { StatusNone , StatusModal , StatusUseCallback } |
enum | PopUpScheme { ePU_Never , ePU_Done , ePU_Once , ePU_Default , ePU_Always } |
Pop-up schemes determine when pop-up messages are displayed for op errors. More... | |
enum | VersionComponents { eMajor , eMinor , ePoint , eRevision } |
Enum to help get the desired version component from the VersionInfo tuple. | |
typedef std::pair< int, DD::Image::Op * > | Output |
Combination of input number and pointer to Op. | |
typedef std::set< Output > | OutputSet |
Set of all outputs from this Op. | |
typedef std::map< Hash, std::vector< unsigned int > > | ItemSelectionList |
typedef bool() | EventCallback(Op *op, EventContext eventCtx) |
using | VersionInfo = std::tuple< int, int, int, int > |
Contains version components with each index defined by the VersionComponents enum. | |
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typedef IopInfo | Info |
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static Iop * | default_input (const OutputContext &) |
static Op * | default_input (const Op *op) |
static Channel | channel (const char *name) |
static const char * | channel_name (Channel c) |
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static int | treeVersion () |
static bool | nukeBusy () |
is nuke processing something on a parallel thread? | |
static Op * | create (Node *node, const char *name, Op *p_op) |
static Op * | create (const char *name, Op *p_op) |
static void | resetTimers () |
reset all the performance timers | |
static void | setTimingEnabled (bool enabled) |
turn performance timing on or off | |
static bool | isTimingEnabled () |
return whether performance timing is on or not | |
static const char * | script_result (bool py=false) |
static void | script_unlock () |
static Op * | retrieveOp (const char *node_path, GenerateType generate_op_type, const OutputContext *generate_op_context=nullptr) |
static Op * | retrieveOp (const char *node_path, const Hash &op_hash, int tree_version) |
static void | all_forget_request () |
static void | new_request_pass () |
static double | callPendingClose (double seconds) |
static void | clearPendingClose () |
static Op * | error_op () |
static const char * | error_message () |
static void | clearAbortAndError () |
To be removed. | |
static void | SetDefaultPopUpEnable (bool lEnable) |
This is used by Nuke to indicate when ops using the default pop-up scheme should show pop-ups. Not recommended for customisation. | |
static std::string | getVersionInfoStr (const VersionInfo &versionInfo) |
Helper function to convert a VersionInfo tuple into a string. | |
static const Description * | find_description (const char *name, const Op *op_) |
static int | message_f (char t, const char *,...) |
static int | message_vf (char t, const char *, va_list) |
static void | add_timeout (float t, TimeoutHandler, void *v=nullptr) |
static void | repeat_timeout (float t, TimeoutHandler, void *=nullptr) |
static bool | has_timeout (TimeoutHandler, void *=nullptr) |
static void | remove_timeout (TimeoutHandler, void *=nullptr) |
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const MetaData::Bundle * | metaCache |
Hash | metaCacheHash |
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static bool | sPreserveCaches |
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static unsigned | current_request_pass |
static void(* | node_redraw_cb )(const Op *) |
static void(* | print_name_cb )(std::ostream &, const Op *) |
static void(* | status_callback )(const Op *, float, float, const char *, StatusFlags) |
static const int | kInvalidVersion |
static const VersionInfo | kUnsetVersion |
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ChannelSet | out_channels_ |
protected so validate() can directly modify it | |
int | raw_channels_from_ |
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bool | _haveHash |
whether the _hash actually has been set by a call to invalidate(Hash) ever. | |
bool | _varyingOutputHash |
whether the hash value will animate over time | |
Hash | _editState |
Op's current edit state, usually the combination of input & knob edit states. | |
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Info | info_ |
This is a base class for a very common type of operation, where each output pixel depends only on the input pixel at the same location, the x,y position, and on the Iop's controls. This includes all drawing operations, color correctors, merge, most key pullers, etc.
To subclass PixelIop you must write in_channels(), and pixel_engine(). You also need to call set_out_channels() if your op does not modify all channels (either call it in the constructor or in _validate()).
NukeWrapper will call a subclass of PixelIop much more efficiently than it will call a normal Iop.
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overrideprotectedvirtual |
engine() gets all the channels that are not in out_channels(), and all the channels needed by in_channels(), from the input. It then calls pixel_engine() to have it modify the data.
Don't replace engine(), as NukeWrapper will bypass this anyway.
Implements DD::Image::Iop.
References DD::Image::IopInfoOwner::channels(), DD::Image::Iop::get(), DD::Image::Iop::in_channels(), DD::Image::Iop::input0(), DD::Image::Iop::out_channels(), pixel_engine(), DD::Image::IopInfoOwner::r(), DD::Image::IopInfoOwner::x(), and DD::Image::IopInfoOwner::y().
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pure virtual |
engine() calls this to calculate the result. This must calculate all the pixels between horizontal positions x and r, for vertical line y, for all channels in mask, and write them to out.
mask will always be a subset of out_channels().
in contains the channels returned by in_channels(0,mask) in the range x through r-1 of line y of input0(). It may contain additional channels and pixels but you should ignore them. You can use at() or get() or any other methods to read pixels that are not in this row, or to get pixels from other inputs.
in and out may be the same instance of Row. This means that writing to out.writable(n)[x] may overwrite in[n][x], and that out.writable(n) or out.erase(n) may change the pointer returned by in[n]. The proper way to write your algorithim is something like this:
If you wish to copy a channel unchanged from input to output, use the following code, which may allocate less memory than calling out.writable():
Implemented in DD::Image::DrawIop.
References DD::Image::Op::debug().
Referenced by engine().
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overridevirtual |
Reimplemented from DD::Image::Op.
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overridevirtual |
Return hints to control when and how this op will be evaluated by the top-down system.
Reimplemented from DD::Image::Iop.
References DD::Image::eChainable.
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