EMAN::TestImageSinewave Class Reference

Replace a source image as a sine wave in specified wave length. More...

#include <processor.h>

Inheritance diagram for EMAN::TestImageSinewave:

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Collaboration diagram for EMAN::TestImageSinewave:

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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 Processor *	NEW ()

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Detailed Description

Replace a source image as a sine wave in specified wave length.

Parameters:

	wavelength	wavelength in equation sin(x*2*PI/wavelength - phase*180/PI)
	axis	(optional) specify a major axis for asymmetric features, default x axis
	phase	(optional) the phase in equation sin(x*2*PI/wavelength - phase*180/PI)
	az	(optional) angle in degree. for 2D image, this is the rotated angle of the image, in 3D image, it's az for euler angle. default is zero
	alt	(optional) angle in degree. only in 3D case, alt for euler angle, default is zero
	phi	(optional) angle in degree. only in 3D case, phi for euler angle, default is zero

Definition at line 5822 of file processor.h.

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Member Function Documentation

void TestImageSinewave::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 6816 of file processor.cpp.

References EMAN::EMData::get_data(), get_name(), EMAN::EMData::get_ndim(), EMAN::Dict::has_key(), InvalidParameterException, LOGERR, EMAN::Processor::params, phase(), phi, EMAN::TestImageProcessor::preprocess(), EMAN::EMData::transform(), and EMAN::EMData::update().

{
        preprocess(image);

        if(!params.has_key("wavelength")) {
                LOGERR("%s wavelength is required parameter", get_name().c_str());
                throw InvalidParameterException("wavelength parameter is required.");
        }
        float wavelength = params["wavelength"];

        string axis = "";
        if(params.has_key("axis")) {
                axis = (const char*)params["axis"];
        }

        float phase = 0;
        if(params.has_key("phase")) {
                phase = params["phase"];
        }

        int ndim = image->get_ndim();
        float * dat = image->get_data();

        if(ndim==1) {   //1D
                for(int i=0; i<nx; ++i, ++dat) {
                        *dat = sin(i*(2.0f*M_PI/wavelength) - phase*180/M_PI);
                }
        }
        else if(ndim==2) {      //2D
                float alpha = 0;
                if(params.has_key("az")) {
                        alpha = params["az"];
                }
                for(int j=0; j<ny; ++j) {
                        for(int i=0; i<nx; ++i, ++dat) {
                                if(alpha != 0) {
                                        *dat = sin((i*sin((180-alpha)*M_PI/180)+j*cos((180-alpha)*M_PI/180))*(2.0f*M_PI/wavelength) - phase*M_PI/180);
                                }
                                else if(axis.compare("y")==0 || axis.compare("Y")==0) {
                                        *dat = sin(j*(2.0f*M_PI/wavelength) - phase*M_PI/180);
                                }
                                else {
                                        *dat = sin(i*(2.0f*M_PI/wavelength) - phase*M_PI/180);
                                }
                        }
                }
        }
        else {  //3D
                float az = 0;
                if(params.has_key("az")) {
                        az = params["az"];
                }
                float alt = 0;
                if(params.has_key("alt")) {
                        alt = params["alt"];
                }
                float phi = 0;
                if(params.has_key("phi")) {
                        phi = params["phi"];
                }

                for(int k=0; k<nz; ++k) {
                        for(int j=0; j<ny; ++j) {
                                for(int i=0; i<nx; ++i, ++dat) {
                                        if(axis.compare("z")==0 || axis.compare("Z")==0) {
                                                *dat = sin(k*(2.0f*M_PI/wavelength) - phase*M_PI/180);
                                        }
                                        else if(axis.compare("y")==0 || axis.compare("Y")==0) {
                                                *dat = sin(j*(2.0f*M_PI/wavelength) - phase*M_PI/180);
                                        }
                                        else {
                                                *dat = sin(i*(2.0f*M_PI/wavelength) - phase*M_PI/180);
                                        }
                                }
                        }
                }

                if(az != 0 || alt != 0 || phi != 0) {
                        Dict d("type","eman");
                        d["az"] = az; d["phi"] = phi; d["alt"] = alt;
                        image->transform(Transform(d));
                }
        }

        image->update();
}

virtual string EMAN::TestImageSinewave::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 5827 of file processor.h.

Referenced by process_inplace().

                {
                        return "testimage.sinewave";
                }

virtual string EMAN::TestImageSinewave::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 5832 of file processor.h.

                {
                        return "Replace a source image as a sine wave in specified wave length";
                }

static Processor* EMAN::TestImageSinewave::NEW

(

)

[inline, static]

Definition at line 5837 of file processor.h.

                {
                        return new TestImageSinewave();
                }

virtual TypeDict EMAN::TestImageSinewave::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 5842 of file processor.h.

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

                {
                        TypeDict d;
                        d.put("wavelength", EMObject::FLOAT, "wavelength in equation sin(x*2*PI/wavelength - phase*180/PI)");
                        d.put("axis", EMObject::STRING, "(optional) specify a major axis for asymmetric features, default x axis");
                        d.put("phase", EMObject::FLOAT, "(optional) the phase in equation sin(x*2*PI/wavelength - phase*180/PI)");
                        d.put("az", EMObject::FLOAT, "(optional) angle in degree. for 2D image, this is the rotated angle of the image, \
                                                                                                in 3D image, it's az for euler angle. default is zero");
                        d.put("alt", EMObject::FLOAT, "(optional) angle in degree. only in 3D case, alt for euler angle, default is zero");
                        d.put("phi", EMObject::FLOAT, "(optional) angle in degree. only in 3D case, phi for euler angle, default is zero");
                        return d;
                }

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

• processor.h
• processor.cpp