DD::Image::Transform Class Reference

Inherits DD::Image::Iop.

Public Member Functions

void _validate (bool)
void setclip (const Box &)
void _request (int x, int y, int r, int t, ChannelMask, int count)
void engine (int y, int x, int r, ChannelMask allchan, Row &row)
 Transform (Node *node=nullptr)
TransformgetTransform ()
virtual void setInputsValid (bool)
virtual HandlesMode doAnyHandles (ViewerContext *ctx)
void build_handles (ViewerContext *ctx)
void draw_handle (ViewerContext *ctx)
Matrix4matrix ()
virtual void matrix (const Matrix4 &m)
bool transform (double x, double y, double &X, double &Y, double &Z)
bool concat_transform (double x, double y, double &X, double &Y, double &Z)
void reset ()
void multiply (const Matrix4 &m)
void multiply (const Transform &t)
void premultiply (const Matrix4 &m)
void premultiply (const Transform &t)
void scale (float s)
void scale (float x, float y, float z=1.0)
void rotateX (float radians)
void rotateY (float radians)
void rotateZ (float radians)
void rotate (float radians)
void rotate (float a, float x, float y, float z)
void skew (float a)
void translate (float x, float y)
void translate (float x, float y, float z)
const Filterfilter () const
int filter_type () const
void filter_type (int t)
bool clamp () const
void clamp (bool v)
bool black_outside () const
void black_outside (bool v)
const char * Class () const
const char * node_help () const
unsigned node_color () const
const Matrix4concat_matrix () const
Iopconcat_input () const
void filter_knobs (Knob_Callback)
void motionblur_knobs (Knob_Callback cb)
void knobs (Knob_Callback)
float getMotionBlur () const
bool isMotionBlurring () const
float motionBlurSample (int x, int y, RowCacheTile &i, ChannelMask iChannels, Pixel &out)
 do motion blurring for the pixel, returns the guestimated path length of the sample
void sample (const Vector2 &center, const Vector2 &dU, const Vector2 &dV, Filter *filter, Pixel &out)
void sample (float cx, float cy, float w, float h, Filter *filter, Pixel &out)
bool set_texturemap (ViewerContext *, bool)
OprealParent ()
- Public Member Functions inherited from DD::Image::Iop
void fetchPlane (ImagePlane &imagePlane)
virtual PlanarIgetPlanarI ()
void force_validate (bool for_real=true) override
IopImpl * pImpl ()
Iopiop () override
 Cast to an Iop. This is much cheaper and safer than using dynamic_cast.
const Iopiop () const override
virtual ~Iop ()
bool test_input (int, Op *) const override
Opdefault_input (int) const override
Iopinput (int n) const
Iopinput (int n, int m) const
Iopinput0 () const
Iopinput1 () 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 BoxrequestedBox () const
const BoxunclampedRequestedBox () 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 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)
void sample (float cx, float cy, float w, float h, Pixel &out)
void sample (const Vector2 &center, 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)
virtual void inputsAttached ()
virtual void gpuEngine_useTextureTransform (bool useTransform)
 GPU support code. More...
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 IopviewerPassThrough () const
OpHints opHints () const override
 Return hints to control when and how this op will be evaluated by the top-down system.
- Public Member Functions inherited from DD::Image::Op
PrevalidateResult preValidate (ViewerContext *ctx=nullptr, PreValidateContext *=nullptr)
OprootOp () const
bool preValidateAborted (int treeStartingVersion, PrevalidateResult &result) const
const OutputSetgetOutputs () const
 return all the outputs of this node
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
virtual std::vector< DD::Image::OutputContextgetPrevVersionsWanted () const
virtual const MetaData::Bundle_fetchMetaData (const char *keyname)
const MetaData::BundlefetchMetaData (const char *keyname)
Node * node () const
DD::Image::NodeI * getNode () const
void node (Node *v)
OpfirstOp () const
void firstOp (Op *v)
Opparent () 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 ()
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 ()
Knobknob (const char *name) const
Knobknob (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)
void add_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
int inputs () const
int node_inputs () const
Opnode_input (int, GenerateType=OUTPUT_OP) const
Opnode_input (int, GenerateType, const DD::Image::OutputContext *outputContext) const
Opinput_op (int n=0) const
virtual void inputs (int n)
Opinput (int) const
int inputNumber (int input, int offset) const
Opinput (int input, int offset) const
Opinput0 () const
 return the primary input More...
Opinput1 () const
 return the second input, if it exists More...
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 OutputContextoutputContext () const
virtual void setOutputContext (const OutputContext &c)
virtual float uses_input (int) const
virtual void build_splits ()
virtual int split_input (int) const
virtual const OutputContextinputContext (int n, int offset, OutputContext &) const
virtual const OutputContextinputUIContext (int n, OutputContext &) const
const Hashhash () 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::KnobgetDopeItemKnob () 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 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
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)
void update_handles () const
bool valid () const
 Returns true if it has been validated - including if there was an error. More...
bool real_valid () const
 Returns true if it has been real-validated - including if there was an error. More...
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 Executableexecutable ()
void setKnobsToContext (const OutputContext &)
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 Formatinput_format () const
const OutputContextuiContext () 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.
OpTreeHandlergetTreeHandler () const
 Returns the treeHandler for a given Op.
bool hasError () const
bool opOrChildHasError () const
const OpgetErroredOp () 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.
OpMessageHandlergetMsgHandler ()
const OpMessageHandlergetMsgHandler () 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 GeoOpgeoOp ()
 Cast to a GeoOp. This is much cheaper and safer than using dynamic_cast.
virtual const GeoOpgeoOp () const
virtual ParticleOpparticleOp ()
 Cast to a ParticleOp. This is much cheaper and safer than using dynamic_cast.
virtual const ParticleOpparticleOp () const
virtual DeepOnlyOpdeepOnlyOp ()
 Cast to a DeepOnlyOp. This is much cheaper and safer than using dynamic_cast.
virtual const DeepOnlyOpdeepOnlyOp () const
virtual std::string getLibraryName () const
 Return a label and version string to display library version info for the Node.
virtual VersionInfo getLibraryVersion () const
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)
Opget (const Description *description)
- Public Member Functions inherited from DD::Image::IopInfoOwner
const Infoinfo () 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 Formatformat () const
const Formatfull_size_format () const
int ydirection () const
bool black_outside () const
ChannelMask channels () const
const GeneralInfogeneralInfo () const
const Info2Dinfo2D () const
int first_frame () const
int last_frame () const
void format (const Format &f)
void full_size_format (const Format &f)

Static Public Member Functions

static double mitchell (double b, double c, double x)
- Static Public Member Functions inherited from DD::Image::Iop
static Iopdefault_input (const OutputContext &)
static Opdefault_input (const Op *op)
static Channel channel (const char *name)
static const char * channel_name (Channel c)
- Static Public Member Functions inherited from DD::Image::Op
static int treeVersion ()
 get the current tree version
static bool nukeBusy ()
 is nuke processing something on a parallel thread?
static Opcreate (Node *node, const char *name, Op *p_op)
static Opcreate (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 void all_forget_request ()
static void new_request_pass ()
static double callPendingClose (double seconds)
static void clearPendingClose ()
static Operror_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)
static const Descriptionfind_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)

Protected Member Functions

bool degenerate ()
virtual void matrixAt (const OutputContext &, Matrix4 &dest)
void concatMatrixAt (const OutputContext &, Matrix4 &dest)
void append (Hash &hash)
void updateConcat (bool setInfo)
 update the concat_matrix_ / concat_input_ / concat_clamp_ / concat_black_outside_
- Protected Member Functions inherited from DD::Image::Iop
 Iop (Node *node)
virtual void _invalidate () override
virtual void _open () override
virtual 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)
IopasIop (Op *op) const
TransformgetDefaultTransform () 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)
- Protected Member Functions inherited from DD::Image::Op
 Op (Node *node)
 The constructor is protected so only subclasses can create the base class.
Opcreate (Node *node, const char *name)
Opcreate (const char *name)
HandlesMode anyInputHandles (ViewerContext *)
 return if any of the inputs (recursively) wish to draw handles More...
HandlesMode anyKnobHandles (ViewerContext *)
 return if any of the knobs on this node wish to draw handles More...
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 PrevalidateResult doPreValidate (ViewerContext *ctx=nullptr, PreValidateContext *=nullptr)

Protected Attributes

Matrix4 matrix_
Matrix4 concat_matrix_
bool clamp_
bool black_outside_
bool concat_clamp_
bool concat_black_outside_
bool can_concat
float _motionblur
 amount of motion blur to do, '1' being heuristically'enough'
ShutterControls _shutter
 shutter controls for motion blurring
Filter filter_
- Protected Attributes inherited from DD::Image::Iop
ChannelSet out_channels_
 protected so validate() can directly modify it
int raw_channels_from_
- Protected Attributes inherited from DD::Image::Op
bool _haveHash
 whether the _hash actually has been set by a call to invalidate(Hash) ever.
- Protected Attributes inherited from DD::Image::IopInfoOwner
Info info_


class TransformI

Additional Inherited Members

- Public Types inherited from DD::Image::Op
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,
enum  ViewableModes { eViewableMode2D, eViewableMode3D, eViewableMode3D_2DReference }
enum  GenerateType {
enum  NodeContext { eNodeGraph, eTimeline, eOpGraph }
enum  StatusFlags { StatusNone, StatusModal, StatusUseCallback }
enum  PopUpScheme {
  ePU_Never, ePU_Done, ePU_Once, ePU_Default,
 Pop-up schemes determine when pop-up messages are displayed for op errors. More...
enum  VersionComponents { eMajor, eMinor, ePoint, eRevision }
typedef std::pair< int, DD::Image::Op * > Output
 Combination of input number and pointer to Op.
typedef std::set< OutputOutputSet
 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 >
- Public Types inherited from DD::Image::IopInfoOwner
typedef IopInfo Info
- Public Attributes inherited from DD::Image::Op
const MetaData::BundlemetaCache
Hash metaCacheHash
- Static Public Attributes inherited from DD::Image::Iop
static bool sPreserveCaches
- Static Public Attributes inherited from DD::Image::Op
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 constexpr int kInvalidVersion
static constexpr VersionInfo kUnsetVersion

Detailed Description

Transforms the input image by a 4x4 transformation matrix.

Constructor & Destructor Documentation

Transform::Transform ( Node *  node = nullptr)

The constructor sets the transformation to the identity matrix.

References _motionblur, and DD::Image::Matrix4::makeIdentity().

Member Function Documentation

bool Transform::degenerate ( )

_validate() calls this when the output image is invisible or otherwise cannot be calculated. It deletes the tp object to indicate this.

References DD::Image::IopInfo::black_outside(), DD::Image::IopInfoOwner::info_, DD::Image::Box::set(), and DD::Image::Op::slowness().

Referenced by _validate().

void Transform::matrixAt ( const OutputContext context,
Matrix4 dest 

For implementing motion blur, return the matrix at various times. Default version changes the knobs and calls validate(), but a subclass can replace this if there is a faster way.

References matrix(), DD::Image::Op::outputContext(), DD::Image::Op::setKnobsToContext(), and DD::Image::Op::validate().

void Transform::append ( Hash hash)

Since _validate is fetching out values of knobs at nearby times to do motionblurring, we have to hash those in here, otherwise changing the velocity of the curve without changing its value will not result in the hash changing.

Reimplemented from DD::Image::Op.

References _shutter, DD::Image::Matrix4::append(), DD::Image::ShutterControls::calcOffset(), DD::Image::ShutterControls::getDuration(), matrix(), DD::Image::Op::outputContext(), step(), and DD::Image::Op::validate().

void Transform::setclip ( const Box box)

After _validate() is called a subclass can call this to force the Transform to clip the output to a rectangle and put black outside it. The rectangle is exactly 1 pixel inside the passed Box (ie the box includes the black edge). The info() is set to this box. This is used by Reformat.

References DD::Image::IopInfoOwner::info_, and DD::Image::Box::set().

void Transform::setInputsValid ( bool  nowValid)

this needs calling whenever the input pointers change even if they are pointing to equivalent Ops, as the Transform keeps its own pointers to its inputs.

Reimplemented from DD::Image::Op.

References DD::Image::Iop::input(), DD::Image::Op::setInputsValid(), and updateConcat().

double Transform::mitchell ( double  b,
double  c,
double  x 

Evaluate a Mitchell filter at position x. This can be used by Nuke to view the filter shapes.

Matrix4 * Transform::matrix ( )

This virtual function should return the matrix used. A subclass can call reset() and then scale, translate, etc to get the matrix wanted and then return Transform::matrix(). You can also skip doing anything and return Transform::matrix() if valid() is true, since you know the matrix has been calculated then.

Referenced by _validate(), append(), matrixAt(), and updateConcat().

bool Transform::transform ( double  x,
double  y,
double &  X,
double &  Y,
double &  Z 

Transform an input uv position into an output xyw.

Returns false for w <= 0. Such a point is not visible and has no output x/y position. However this version makes a "guess" as to what direction visible pixels that are near uv are and returns very large values for x,y in that direction. This is useful for calculating resulting bounding boxes.

bool Transform::concat_transform ( double  x,
double  y,
double &  X,
double &  Y,
double &  Z 

Same as transform() but it uses the concatenated matrix, thus transforming coordinates from concat_input(). This only works after validate() has been called.

void DD::Image::Transform::reset ( )

Set the transformation to the identity.

References DD::Image::Matrix4::makeIdentity().

void DD::Image::Transform::multiply ( const Matrix4 m)

Transform further by an arbitrary transformation matrix. Like OpenGL all transformation operations are done by post-multiply, so this transformation is applied in the object's space. For instance a rotate(1) followed by a translate(1,0) will move the center of the object along a diagonal line.

void Transform::rotateX ( float  radians)

Rotate about x (top towards camera) by angle radians.

References DD::Image::Matrix4::rotateX().

void Transform::rotateY ( float  radians)

Rotate about y (left edge towards camera) by angle radians.

References DD::Image::Matrix4::rotateY().

void Transform::rotateZ ( float  radians)

Rotate about z (counter-clockwise) by angle radians.

References DD::Image::Matrix4::rotateZ().

int Transform::filter ( ) const

Set what filter to use. This is an index into a table presented to the user in the Nuke GUI. Index 0 is impulse, index 1 is our default filter (Cubic). Others are not defined and may change at any time.

Return the current filter type.

void DD::Image::Transform::clamp ( bool  v)

If true then any negative intermediate results are set to zero. This can improve the results from high-contrast images and filters with negative lobes if you know nothing in the input is negative, by deleting a lot of the ringing in black areas.

The default value is false.

void DD::Image::Transform::black_outside ( bool  v)

If true the transform will act as though any data outside the incoming bounding box is black. It will also produce an alpha channel if there is none in the input.

If this is false, Transform will replicate the pixels outside the bounding box instead. This will prevent any antialiasing on the edge. This is used by the Reformat operator, and may be useful for tile or camera shake type operators.

The default value is true.

unsigned Transform::node_color ( ) const

All transform operators default to a purpleish color.

Reimplemented from DD::Image::Op.

const Matrix4 & DD::Image::Transform::concat_matrix ( ) const

After _validate() is done, this returns the transformation between the concat_input() and the output of this operator.

Referenced by updateConcat().

Iop * DD::Image::Transform::concat_input ( ) const

After _validate() is done this returns the operator that input will actually be read from.

Referenced by updateConcat().

void Transform::filter_knobs ( Knob_Callback  cb)

Subclasses should call this to insert a filter-selection control into their control panels. This adds the "filter type" and "clamp" controls.

References DD::Image::Bool_knob(), DD::Image::Filter::knobs(), DD::Image::Knob::NODEGRAPH_ONLY, DD::Image::SetFlags(), and DD::Image::Tooltip().

Referenced by knobs().

void Transform::motionblur_knobs ( Knob_Callback  cb)

Adds the motionblur amount and shutter knobs

do the shutter controls

References _motionblur, _shutter, DD::Image::Float_knob(), DD::Image::ShutterControls::knobs(), DD::Image::Knob::NODEGRAPH_ONLY, DD::Image::SetFlags(), and DD::Image::Tooltip().

Referenced by knobs().

void Transform::knobs ( Knob_Callback  cb)
void Transform::sample ( float  cx,
float  cy,
float  w,
float  h,
Filter filter,
Pixel out 

Disables motion blur!

Reimplemented from DD::Image::Iop.

References sample(), and DD::Image::Iop::sample().

bool Transform::set_texturemap ( ViewerContext ctx,
bool  gl 

Uses the input's texture map, but changes the OpenGL texture matrix to show it correctly translated.

Reimplemented from DD::Image::Iop.

References DD::Image::Matrix4::array(), and DD::Image::Iop::set_texturemap().

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