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/**
* $Id: invert_cpp.cc 22454 2019-08-31 19:53:40Z yeti-dn $
* A very simple Gwyddion plug-in example in C++.
* Written by Yeti <yeti@gwyddion.net>. Public domain.
**/
#include <dump.hh>
#include <plugin-helper.hh>
#include <cfloat>
#include <iostream>
using namespace std;
/* Plug-in helper data.
* Each action (register, run) is represented by a PluginAction object with
* one function actually performing the action. */
static bool action_register(char *args[]);
static bool action_run (char *args[]);
static PluginAction plugin_actions[] = {
/* name arguments action */
{ string("register"), 0, &action_register },
{ string("run"), 2, &action_run },
};
#define NACTIONS sizeof(plugin_actions)/sizeof(plugin_actions[0])
int
main(int argc, char *argv[])
{
/* Just let plug-in helper decide what to do */
return !run_action(NACTIONS, plugin_actions, argc, argv);
}
/* "register" action: print registration information to standard output */
static bool
action_register(char *args[])
{
cout << "invert_cpp" << endl;
cout << "/_Test/Value Invert (C++)" << endl;
cout << "noninteractive with_defaults" << endl;
return true;
}
/* "run" action: actually do something;
* the first argument is run mode, the second one a dump file name to read
* and overwrite with result */
static bool
action_run(char *args[])
{
/* Run mode sanity check */
if (string("noninteractive") != args[0]
&& string("with_defaults") != args[0])
return false;
/* Read the dump file */
Dump dump;
dump.read(args[1]);
/* Get "/0/data" data field, i.e., the main data. */
map<string,DataField>::iterator iter = dump.data.find(string("/0/data"));
/* Find minimum and maximum to keep data range during value inversion */
double min = DBL_MAX;
double max = -DBL_MAX;
unsigned long int n = iter->second.xres * iter->second.yres;
double *a = iter->second.data;
unsigned long int i;
for (i = 0; i < n; i++) {
if (a[i] < min)
min = a[i];
if (a[i] > max)
max = a[i];
}
/* Invert */
double mirror = min + max;
for (i = 0; i < n; i++)
a[i] = mirror - a[i];
/* Write back the dump file */
dump.write(args[1]);
return true;
}
/* vim: set cin et ts=4 sw=4 cino=>1s,e0,n0,f0,{0,}0,^0,\:1s,=0,g1s,h0,t0,+1s,c3,(0,u0 : */
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