| SoRotateProcessing2d Class |
OIV.ImageViz.Engines.GeometryAndMatching.GeometricTransforms.SoRotateProcessing2d image filter.
Inheritance HierarchyOIV.InventorSoNetBase
OIV.InventorSoDisposable
OIV.Inventor.MiscSoBase
OIV.Inventor.FieldsSoFieldContainer
OIV.Inventor.EnginesSoEngine
OIV.ImageViz.EnginesSoImageVizEngine
OIV.ImageViz.Engines.GeometryAndMatching.GeometricTransformsSoRotateProcessing2d
Namespace: OIV.ImageViz.Engines.GeometryAndMatching.GeometricTransforms
Assembly: OIV.ImageViz (in OIV.ImageViz.dll) Version: 2023.1.3.0 (2023.1.3)
SyntaxThe SoRotateProcessing2d type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | SoRotateProcessing2d | Constructor. |
Methods| Name | Description | |
|---|---|---|
| AbortEvaluate | Abort current processing as soon as possible. |
| Copy | Creates and returns an exact copy of the engine. |
| CopyFieldValues(SoFieldContainer) | Calls CopyFieldValues(fc, false). (Inherited from SoFieldContainer.) |
| CopyFieldValues(SoFieldContainer, Boolean) | Copies the contents of fc's fields into this object's fields. |
| Dispose |
Releases all resources used by SoDisposable.
(Inherited from SoDisposable.) |
| EnableNotify | Notification at this Field Container is enabled (if flag == true) or disabled (if flag == false). |
| Equals | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
| FieldsAreEqual | Returns true if this object's fields are exactly equal to fc's fields. |
| Get | Returns the values of the fields of this object in the Open Inventor ASCII file format in the given string. |
| GetAllFields | Returns a list of fields, including the eventIn's and eventOut's. |
| GetEventIn | Returns a the eventIn with the given name. |
| GetEventOut | Returns the eventOut with the given name. |
| GetField | Returns a the field of this object whose name is fieldName. |
| GetFieldName | Returns the name of the given field in the fieldName argument. |
| GetFields | Appends references to all of this object's fields to resultList, and returns the number of fields appended. |
| GetHashCode |
Overrides GetHashCode().
(Inherited from SoNetBase.) |
| GetName | Returns the name of an instance. |
| GetOutput | Returns a reference to the engine output with the given name. |
| GetOutputName | Returns (in outputName) the name of the engine output (output). |
| GetOutputs | Returns a list of outputs in this engine. |
| GetStringName | (Inherited from SoBase.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| HasDefaultValues | Returns true if all of the object's fields have their default values. |
| IsEvaluating | Returns true if the engine evaluation is in progress. |
| IsNotifyEnabled | Notification is the process of telling interested objects that this object has changed. |
| IsSynchronizable | Gets the ScaleViz synchronizable state of this object. |
| Set | Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format. |
| SetName | (Inherited from SoBase.) |
| SetSynchronizable | Sets this to be a ScaleViz synchronizable object. |
| SetToDefaults | Sets all fields in this object to their default values. |
| StartEvaluate | Evaluate engine and dependencies in another thread without blocking the current one. |
| ToString |
Converts this SoBase structure to a human readable string.
(Inherited from SoBase.) |
| Touch | Marks an instance as modified, simulating a change to it. |
| WaitEvaluate | Wait for the end of engine evaluation. |
Properties| Name | Description | |
|---|---|---|
 | inImage | The input image. |
| IsDisposable | ISafeDisposable interface implementation.
(Inherited from SoDisposable.) |
| outImage | The output image. |
| precisionMode | Select the interpolation mode. |
| rotationAngle | The angle of the rotation in degrees (not radians). |
| rotationCenter | The rotation center coordinates. |
| UserData |
Gets or sets the user data to be contained by the field container.
(Inherited from SoFieldContainer.) |
Events| Name | Description | |
|---|---|---|
 | OnBegin | Event raised when the processing begins. |
| OnEnd | Event raised when processing ends and the result is available. |
| OnProgress | Event raised while processing is running. |
RemarksThe OIV.ImageViz.Engines.GeometryAndMatching.GeometricTransforms.SoRotateProcessing2d filter performs a rotation of an image by a user-defined angle 
and an origin 
. The new coordinates 
can be expressed as a function of the old coordinates 
: 
where 
are the coordinates of the center of the rotation. Or in a matrix notation: 
Once again, destination pixels may be outside the image, and normally these pixels are ignored. Furthermore, the coordinates obtained are not always integers, even though an image is a discrete space. The figure below illustrates the grid of the resultant image, the point 
being a pixel in this image. The points are generated from the rotation of the original image and do not fit on the grid.
, two methods are possible:Take the grey level of the nearest neighbor. For the above example
would be given the intensity of 
Take into account the four nearest neighbors and calculate the grey level based on the average of the four points, weighted by their distance, as in:
If 
denotes the distance 
, 
is defined as: 
e.g. 
.
The choice of the 's ensures that the interpolated value is equal to 
if matches 
. This method gives better results but requires more computation time.
NOTE: In OIV.ImageViz.Engines.GeometryAndMatching.GeometricTransforms.SoRotateProcessing2d filter, the image is perceived as a cylinder, where the information outside the image area wraps around and is placed in the blank part.
FILE FORMAT/DEFAULT
RotateProcessing2d {
| inImage | NULL |
| rotationCenter | 0 0 |
| rotationAngle | 10.0f |
| precisionMode | NEARBY_PIXEL |
Library references: rotate
See Also