Fct_Pixel_Get

These function return the TAG pixel value of a pixel identified by its 3D position.

Syntax

unsigned char (*Fct_Pixel_Get_TAG)(

SliceO_Class *pt,

void *ima,

Vect pos

)

Parameters

Pointer to the class calling the function.

ima

Pointer to a Tomo_Image structure, as defined in the SliceO_File class.

pos

position of a point in the image plane.

Return value

This function return the TAG value of the pixel at the location. "pos".

Remarks

By default, the function will apply the local transformation to the position and call the same function for the parent class in the tree. The "root" class will return the actual value.

Requirements

Header:

sliceO_include.hpp

Library:

sliceO_Structures.lib

Example

Default callback for all classes except "Root"

// ----------------------------------------------------------------------------

// Class_Class_Pixel_Get_TAG

// Get one pixel from the original TAG image

// ----------------------------------------------------------------------------

unsigned char Class_Class_Pixel_Get_TAG( SliceO_Class *pt, void *ima, Vect pos )

{

// --- Apply the current transformation to the pixel's coord ---

if ( ! pt->m_ident )

pos *= pt->m_new2old ;

// --- if a parent function exist, use it! ---

SliceO_Class *parent = pt->Parent_Get_Pt() ;

return( parent->Fct_Pixel_Get_TAG( parent, ima, pos ) ) ;

}

Default callback for "Root" class

// ----------------------------------------------------------------------------

// Class_Root_Pixel_Get_TAG

// Get one pixel from the original TAG image

// ----------------------------------------------------------------------------

unsigned char Class_Root_Pixel_Get_TAG( SliceO_Class *pt, void *ima, Vect pos )

{

return( Tomo_Image_Pixel_Get_Tag( NULL, ((Tomo_Image *) ima), (int) pos.x, (int) pos.y, (int) pos.z, (int) pos.t ) ) ;

}