EMAN::TestImageCylinder Class Reference

Replace a source image with a cylinder. More...

#include <processor.h>

Inheritance diagram for EMAN::TestImageCylinder:

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Collaboration diagram for EMAN::TestImageCylinder:

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List of all members.

Public Member Functions

virtual void process_inplace (EMData *image)
 To process an image in-place.
virtual string get_name () const
 Get the processor's name.
virtual string get_desc () const
 Get the descrition of this specific processor.
virtual TypeDict get_param_types () const
 Get processor parameter information in a dictionary.

Static Public Member Functions

static ProcessorNEW ()

Static Public Attributes

static const string NAME = "testimage.cylinder"

Detailed Description

Replace a source image with a cylinder.

Parameters:
radius radius for the cylinder
height height for the cylinder, by default it's the nz

Definition at line 6604 of file processor.h.


Member Function Documentation

virtual string EMAN::TestImageCylinder::get_desc (  )  const [inline, virtual]

Get the descrition of this specific processor.

This function must be overwritten by a subclass.

Returns:
The description of this processor.

Implements EMAN::Processor.

Definition at line 6614 of file processor.h.

06615                 {
06616                         return "Replace a source image as a cylinder";
06617                 }

virtual string EMAN::TestImageCylinder::get_name (  )  const [inline, virtual]

Get the processor's name.

Each processor is identified by a unique name.

Returns:
The processor's name.

Implements EMAN::Processor.

Definition at line 6609 of file processor.h.

References NAME.

06610                 {
06611                         return NAME;
06612                 }

virtual TypeDict EMAN::TestImageCylinder::get_param_types (  )  const [inline, virtual]

Get processor parameter information in a dictionary.

Each parameter has one record in the dictionary. Each record contains its name, data-type, and description.

Returns:
A dictionary containing the parameter info.

Reimplemented from EMAN::Processor.

Definition at line 6624 of file processor.h.

References EMAN::EMObject::FLOAT, and EMAN::TypeDict::put().

06625                 {
06626                         TypeDict d;
06627                         d.put("radius", EMObject::FLOAT, "radius for the cylinder");
06628                         d.put("height", EMObject::FLOAT, "height for the cylinder, by default it's the nz");
06629 
06630                         return d;
06631                 }

static Processor* EMAN::TestImageCylinder::NEW (  )  [inline, static]

Definition at line 6619 of file processor.h.

06620                 {
06621                         return new TestImageCylinder();
06622                 }

void TestImageCylinder::process_inplace ( EMData image  )  [virtual]

To process an image in-place.

For those processors which can only be processed out-of-place, override this function to just print out some error message to remind user call the out-of-place version.

Parameters:
image The image to be processed.

Implements EMAN::Processor.

Definition at line 7961 of file processor.cpp.

References EMAN::EMData::get_data(), EMAN::EMData::get_xsize(), EMAN::EMData::get_ysize(), EMAN::EMData::get_zsize(), EMAN::Dict::has_key(), ImageDimensionException, InvalidValueException, min, EMAN::Processor::params, EMAN::TestImageProcessor::preprocess(), and EMAN::EMData::update().

07962 {
07963         preprocess(image);
07964 
07965         int nx = image->get_xsize();
07966         int ny = image->get_ysize();
07967         int nz = image->get_zsize();
07968 
07969         if(nz == 1) {
07970                 throw ImageDimensionException("This processor only apply to 3D image");
07971         }
07972 
07973         float radius = params["radius"];
07974 #ifdef _WIN32
07975         if(radius > _cpp_min(nx, ny)/2.0) {
07976 #else
07977         if(radius > std::min(nx, ny)/2.0) {
07978 #endif
07979                 throw InvalidValueException(radius, "radius must be <= min(nx, ny)/2");
07980         }
07981 
07982         float height;
07983         if(params.has_key("height")) {
07984                 height = params["height"];
07985                 if(height > nz) {
07986                         throw InvalidValueException(radius, "height must be <= nz");
07987                 }
07988         }
07989         else {
07990                 height = static_cast<float>(nz);
07991         }
07992 
07993         float *dat = image->get_data();
07994         float x2, y2; //this is coordinates of this pixel from center axle
07995         float r = 0.0f;
07996         for (int k = 0; k < nz; ++k) {
07997                 for (int j = 0; j < ny; ++j) {
07998                         for (int i = 0; i < nx; ++i, ++dat) {
07999                                 x2 = fabs((float)i - nx/2);
08000                                 y2 = fabs((float)j - ny/2);
08001                                 r = (x2*x2)/(radius*radius) + (y2*y2)/(radius*radius);
08002 
08003                                 if(r<=1 && k>=(nz-height)/2 && k<=(nz+height)/2) {
08004                                         *dat = 1;
08005                                 }
08006                                 else {
08007                                         *dat = 0;
08008                                 }
08009                         }
08010                 }
08011         }
08012 
08013         image->update();
08014 }


Member Data Documentation

const string TestImageCylinder::NAME = "testimage.cylinder" [static]

Definition at line 6633 of file processor.h.

Referenced by get_name().


The documentation for this class was generated from the following files:
Generated on Thu May 3 10:10:58 2012 for EMAN2 by  doxygen 1.4.7