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/*
* $Id: latsim.c 24451 2021-11-01 15:34:25Z yeti-dn $
* Copyright (C) 2012-2021 David Necas (Yeti), Petr Klapetek.
* E-mail: yeti@gwyddion.net, klapetek@gwyddion.net.
*
* This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with this program; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include <gtk/gtk.h>
#include <libgwyddion/gwymacros.h>
#include <libgwyddion/gwymath.h>
#include <libprocess/gwyprocesstypes.h>
#include <libprocess/stats.h>
#include <libgwydgets/gwystock.h>
#include <libgwymodule/gwymodule-process.h>
#include <app/gwyapp.h>
#define RUN_MODES (GWY_RUN_IMMEDIATE | GWY_RUN_INTERACTIVE)
enum {
PARAM_MU,
PARAM_ADHESION,
PARAM_LOAD,
};
typedef struct {
GwyParams *params;
GwyDataField *field;
GwyDataField *forward;
GwyDataField *reverse;
} ModuleArgs;
typedef struct {
ModuleArgs *args;
GtkWidget *dialog;
GwyParamTable *table;
} ModuleGUI;
static gboolean module_register (void);
static GwyParamDef* define_module_params(void);
static void latsim (GwyContainer *data,
GwyRunType runtype);
static gboolean execute (ModuleArgs *args);
static GwyDialogOutcome run_gui (ModuleArgs *args);
static GwyModuleInfo module_info = {
GWY_MODULE_ABI_VERSION,
&module_register,
N_("Lateral force simulator"),
"Petr Klapetek <klapetek@gwyddion.net>",
"2.0",
"David Nečas (Yeti) & Petr Klapetek",
"2012",
};
GWY_MODULE_QUERY2(module_info, latsim)
static gboolean
module_register(void)
{
gwy_process_func_register("latsim",
(GwyProcessFunc)&latsim,
N_("/SPM M_odes/_Force and Indentation/_Lateral Force..."),
GWY_STOCK_TIP_LATERAL_FORCE,
RUN_MODES,
GWY_MENU_FLAG_DATA,
N_("Simulate topography artifacts in lateral force channels"));
return TRUE;
}
static GwyParamDef*
define_module_params(void)
{
static GwyParamDef *paramdef = NULL;
if (paramdef)
return paramdef;
paramdef = gwy_param_def_new();
gwy_param_def_set_function_name(paramdef, gwy_process_func_current());
gwy_param_def_add_double(paramdef, PARAM_MU, "mu", _("_Friction coefficient"), 0.01, 20.0, 1.0);
gwy_param_def_add_double(paramdef, PARAM_ADHESION, "adhesion", _("_Adhesion force"), 0.0, 1e-6, 1e-9);
gwy_param_def_add_double(paramdef, PARAM_LOAD, "load", _("_Normal force"), 0.0, 1e-6, 1e-9);
return paramdef;
}
static void
latsim(GwyContainer *data, GwyRunType runtype)
{
GwyDialogOutcome outcome = GWY_DIALOG_PROCEED;
ModuleArgs args;
gint oldid, newid;
g_return_if_fail(runtype & RUN_MODES);
gwy_app_data_browser_get_current(GWY_APP_DATA_FIELD, &args.field,
GWY_APP_DATA_FIELD_ID, &oldid,
0);
g_return_if_fail(args.field);
args.forward = gwy_data_field_new_alike(args.field, TRUE);
gwy_si_unit_set_from_string(gwy_data_field_get_si_unit_z(args.forward), "N");
args.reverse = gwy_data_field_new_alike(args.forward, TRUE);
args.params = gwy_params_new_from_settings(define_module_params());
if (runtype == GWY_RUN_INTERACTIVE) {
outcome = run_gui(&args);
gwy_params_save_to_settings(args.params);
if (outcome == GWY_DIALOG_CANCEL)
goto end;
}
if (outcome != GWY_DIALOG_HAVE_RESULT) {
if (!execute(&args))
goto end;
}
newid = gwy_app_data_browser_add_data_field(args.forward, data, TRUE);
gwy_app_sync_data_items(data, data, oldid, newid, FALSE,
GWY_DATA_ITEM_GRADIENT,
GWY_DATA_ITEM_MASK_COLOR,
0);
gwy_app_set_data_field_title(data, newid, _("Fw lateral force "));
gwy_app_channel_log_add_proc(data, oldid, newid);
newid = gwy_app_data_browser_add_data_field(args.reverse, data, TRUE);
gwy_app_sync_data_items(data, data, oldid, newid, FALSE,
GWY_DATA_ITEM_GRADIENT,
GWY_DATA_ITEM_MASK_COLOR,
0);
gwy_app_set_data_field_title(data, newid, _("Rev lateral force"));
gwy_app_channel_log_add_proc(data, oldid, newid);
end:
GWY_OBJECT_UNREF(args.forward);
GWY_OBJECT_UNREF(args.reverse);
g_object_unref(args.params);
}
static GwyDialogOutcome
run_gui(ModuleArgs *args)
{
GwyDialog *dialog;
GwyParamTable *table;
ModuleGUI gui;
gui.args = args;
gui.dialog = gwy_dialog_new(_("Lateral Force Simulation"));
dialog = GWY_DIALOG(gui.dialog);
gwy_dialog_add_buttons(dialog, GWY_RESPONSE_RESET, GTK_RESPONSE_CANCEL, GTK_RESPONSE_OK, 0);
table = gui.table = gwy_param_table_new(args->params);
gwy_param_table_append_slider(table, PARAM_MU);
gwy_param_table_slider_set_mapping(table, PARAM_MU, GWY_SCALE_MAPPING_LOG);
gwy_param_table_append_slider(table, PARAM_LOAD);
gwy_param_table_slider_set_factor(table, PARAM_LOAD, 1e9);
gwy_param_table_set_unitstr(table, PARAM_LOAD, "nN");
gwy_param_table_append_slider(table, PARAM_ADHESION);
gwy_param_table_slider_set_factor(table, PARAM_ADHESION, 1e9);
gwy_param_table_set_unitstr(table, PARAM_ADHESION, "nN");
gwy_dialog_add_param_table(dialog, table);
gwy_dialog_add_content(dialog, gwy_param_table_widget(table), FALSE, TRUE, 0);
return gwy_dialog_run(dialog);
}
static gboolean
execute(ModuleArgs *args)
{
GwyDataField *field = args->field, *forward = args->forward, *reverse = args->reverse;
gdouble mu = gwy_params_get_double(args->params, PARAM_MU);
gdouble load = gwy_params_get_double(args->params, PARAM_LOAD);
gdouble adhesion = gwy_params_get_double(args->params, PARAM_ADHESION);
gint xres, yres, col, row, k;
gdouble slope, dx, theta;
gdouble va, vb, vc, vd;
gdouble *dfw, *drev;
const gdouble *surface;
xres = gwy_data_field_get_xres(field);
yres = gwy_data_field_get_yres(field);
dx = 2.0*gwy_data_field_get_dx(field);
dfw = gwy_data_field_get_data(forward);
drev = gwy_data_field_get_data(reverse);
surface = gwy_data_field_get_data_const(field);
for (row = 0; row < yres; row++) {
for (col = 0; col < xres; col++) {
k = row*xres + col;
if (col == 0)
slope = 2.0*(surface[k + 1] - surface[k])/dx;
else if (col == xres-1)
slope = 2.0*(surface[k] - surface[k - 1])/dx;
else
slope = (surface[k + 1] - surface[k - 1])/dx;
theta = fabs(atan(slope));
va = load*sin(theta);
vc = cos(theta);
vb = mu*(load*vc + adhesion);
vd = mu*sin(theta);
if (slope >= 0.0) {
dfw[k] = (va + vb)/(vc - vd);
drev[k] = -(va - vb)/(vc + vd);
}
else {
dfw[k] = -(va - vb)/(vc + vd);
drev[k] = (va + vb)/(vc - vd);
}
}
}
return TRUE;
}
/* vim: set cin columns=120 tw=118 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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