/* MapObject 1.2.0 -- image filter plug-in for PIKA
 *
 * Copyright (C) 1996-98 Tom Bech
 * Copyright (C) 1996-98 Federico Mena Quintero
 *
 * E-mail: tomb@gimp.org (Tom) or quartic@gimp.org (Federico)
 *
 * 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 3 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, see <https://www.gnu.org/licenses/>.
 */

#include "config.h"

#include <gtk/gtk.h>

#include <libpika/pika.h>
#include <libpika/pikaui.h>

#include "map-object-ui.h"
#include "map-object-image.h"
#include "map-object-apply.h"
#include "map-object-preview.h"
#include "map-object-main.h"

#include "libpika/stdplugins-intl.h"


MapObjectValues mapvals;


typedef struct _Map      Map;
typedef struct _MapClass MapClass;

struct _Map
{
  PikaPlugIn parent_instance;
};

struct _MapClass
{
  PikaPlugInClass parent_class;
};


#define MAP_TYPE  (map_get_type ())
#define MAP(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), MAP_TYPE, Map))

GType                   map_get_type         (void) G_GNUC_CONST;

static GList          * map_query_procedures (PikaPlugIn           *plug_in);
static PikaProcedure  * map_create_procedure (PikaPlugIn           *plug_in,
                                                   const gchar          *name);

static PikaValueArray * map_run              (PikaProcedure        *procedure,
                                              PikaRunMode           run_mode,
                                              PikaImage            *image,
                                              gint                  n_drawables,
                                              PikaDrawable        **drawables,
                                              PikaProcedureConfig  *config,
                                              gpointer              run_data);

static void             set_default_settings (void);
static void             check_drawables      (PikaDrawable         *drawable);


G_DEFINE_TYPE (Map, map, PIKA_TYPE_PLUG_IN)

PIKA_MAIN (MAP_TYPE)
DEFINE_STD_SET_I18N


static void
map_class_init (MapClass *klass)
{
  PikaPlugInClass *plug_in_class = PIKA_PLUG_IN_CLASS (klass);

  plug_in_class->query_procedures = map_query_procedures;
  plug_in_class->create_procedure = map_create_procedure;
  plug_in_class->set_i18n         = STD_SET_I18N;
}

static void
map_init (Map *map)
{
}

static GList *
map_query_procedures (PikaPlugIn *plug_in)
{
  return g_list_append (NULL, g_strdup (PLUG_IN_PROC));
}

static PikaProcedure *
map_create_procedure (PikaPlugIn  *plug_in,
                      const gchar *name)
{
  PikaProcedure *procedure = NULL;

  if (! strcmp (name, PLUG_IN_PROC))
    {
      PikaRGB white = { 1.0, 1.0, 1.0, 1.0 };

      procedure = pika_image_procedure_new (plug_in, name,
                                             PIKA_PDB_PROC_TYPE_PLUGIN,
                                             map_run, NULL, NULL);

      pika_procedure_set_image_types (procedure, "RGB*");
      pika_procedure_set_sensitivity_mask (procedure,
                                           PIKA_PROCEDURE_SENSITIVE_DRAWABLE);

      pika_procedure_set_menu_label (procedure, _("Map _Object..."));
      pika_procedure_add_menu_path (procedure, "<Image>/Filters/Map");

      pika_procedure_set_documentation (procedure,
                                        _("Map the image to an object "
                                          "(plane, sphere, box or cylinder)"),
                                        "No help yet",
                                        name);
      pika_procedure_set_attribution (procedure,
                                      "Tom Bech & Federico Mena Quintero",
                                      "Tom Bech & Federico Mena Quintero",
                                      "Version 1.2.0, July 16 1998");

      PIKA_PROC_ARG_CHOICE (procedure, "map-type",
                            _("Map _to"),
                            _("Type of mapping"),
                            pika_choice_new_with_values ("map-plane",    MAP_PLANE,    _("Plane"),    NULL,
                                                         "map-sphere",   MAP_SPHERE,   _("Sphere"),   NULL,
                                                         "map-box",      MAP_BOX,      _("Box"),      NULL,
                                                         "map-cylinder", MAP_CYLINDER, _("Cylinder"), NULL,
                                                         NULL),
                            "map-plane",
                            G_PARAM_READWRITE);

      PIKA_PROC_ARG_DOUBLE (procedure, "viewpoint-x",
                            _("X"),
                            _("Position of viewpoint (x,y,z)"),
                            -G_MAXDOUBLE, G_MAXDOUBLE, 0.5,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "viewpoint-y",
                            _("Y"),
                            _("Position of viewpoint (x,y,z)"),
                            -G_MAXDOUBLE, G_MAXDOUBLE, 0.5,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "viewpoint-z",
                            _("Z"),
                            _("Position of viewpoint (x,y,z)"),
                            -G_MAXDOUBLE, G_MAXDOUBLE, 2.0,
                            G_PARAM_READWRITE);

      PIKA_PROC_ARG_DOUBLE (procedure, "position-x",
                            _("Position X"),
                            _("Object position (x,y,z)"),
                            -1.0, 2.0, 0.5,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "position-y",
                            _("Position Y"),
                            _("Object position (x,y,z)"),
                            -1.0, 2.0, 0.5,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "position-z",
                            _("Position Z"),
                            _("Object position (x,y,z)"),
                            -1.0, 2.0, 0.0,
                            G_PARAM_READWRITE);

      PIKA_PROC_ARG_DOUBLE (procedure, "first-axis-x",
                            _("X"),
                            _("First axis of object (x,y,z)"),
                            -1.0, 2.0, 1.0,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "first-axis-y",
                            _("y"),
                            _("First axis of object (x,y,z)"),
                            -1.0, 2.0, 0.0,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "first-axis-z",
                            _("Z"),
                            _("First axis of object (x,y,z)"),
                            -1.0, 2.0, 0.0,
                            G_PARAM_READWRITE);

      PIKA_PROC_ARG_DOUBLE (procedure, "second-axis-x",
                            _("X"),
                            _("Second axis of object (x,y,z)"),
                            -1.0, 2.0, 0.0,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "second-axis-y",
                            _("Y"),
                            _("Second axis of object (x,y,z)"),
                            -1.0, 2.0, 1.0,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "second-axis-z",
                            _("Z"),
                            _("Second axis of object (x,y,z)"),
                            -1.0, 2.0, 0.0,
                            G_PARAM_READWRITE);

      PIKA_PROC_ARG_DOUBLE (procedure, "rotation-angle-x",
                            _("Angle X"),
                            _("Rotation about X axis in degrees"),
                            -180, 180, 0.0,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "rotation-angle-y",
                            _("Angle Y"),
                            _("Rotation about Y axis in degrees"),
                            -180, 180, 0.0,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "rotation-angle-z",
                            _("Angle Z"),
                            _("Rotation about Z axis in degrees"),
                            -180, 180, 0.0,
                            G_PARAM_READWRITE);

      PIKA_PROC_ARG_CHOICE (procedure, "light-type",
                            _("Light source type"),
                            _("Type of lightsource"),
                            pika_choice_new_with_values ("point-light",       POINT_LIGHT,       _("Point Light"),       NULL,
                                                         "directional-light", DIRECTIONAL_LIGHT, _("Directional Light"), NULL,
                                                         "no-light",          NO_LIGHT,          _("No Light"),          NULL,
                                                         NULL),
                            "point-light",
                            G_PARAM_READWRITE);

      PIKA_PROC_ARG_RGB (procedure, "light-color",
                         _("Light source _color"),
                         _("Light source color"),
                         TRUE, &white,
                         G_PARAM_READWRITE);

      PIKA_PROC_ARG_DOUBLE (procedure, "light-position-x",
                            _("Light position X"),
                            _("Light source position (x,y,z)"),
                            -G_MAXDOUBLE, G_MAXDOUBLE, -0.5,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "light-position-y",
                            _("Light position Y"),
                            _("Light source position (x,y,z)"),
                            -G_MAXDOUBLE, G_MAXDOUBLE, -0.5,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "light-position-z",
                            _("Light position Z"),
                            _("Light source position (x,y,z)"),
                            -G_MAXDOUBLE, G_MAXDOUBLE, 2.0,
                            G_PARAM_READWRITE);

      PIKA_PROC_ARG_DOUBLE (procedure, "light-direction-x",
                            _("Light direction X"),
                            _("Light source direction (x,y,z)"),
                            -G_MAXDOUBLE, G_MAXDOUBLE, -1.0,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "light-direction-y",
                            _("Light direction Y"),
                            _("Light source direction (x,y,z)"),
                            -G_MAXDOUBLE, G_MAXDOUBLE, -1.0,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "light-direction-z",
                            _("Light direction Z"),
                            _("Light source direction (x,y,z)"),
                            -G_MAXDOUBLE, G_MAXDOUBLE, 1.0,
                            G_PARAM_READWRITE);

      PIKA_PROC_ARG_DOUBLE (procedure, "ambient-intensity",
                            _("Ambie_nt"),
                            _("Material ambient intensity"),
                            0, 1, 0.3,
                            G_PARAM_READWRITE);

      PIKA_PROC_ARG_DOUBLE (procedure, "diffuse-intensity",
                            _("D_iffuse"),
                            _("Material diffuse intensity"),
                            0, 1, 1.0,
                            G_PARAM_READWRITE);

      /* Reflectivity */
      PIKA_PROC_ARG_DOUBLE (procedure, "diffuse-reflectivity",
                            _("Di_ffuse"),
                            _("Material diffuse reflectivity"),
                            0, 1, 0.5,
                            G_PARAM_READWRITE);

      PIKA_PROC_ARG_DOUBLE (procedure, "specular-reflectivity",
                            _("Spec_ular"),
                            _("Material specular reflectivity"),
                            0, 1, 0.5,
                            G_PARAM_READWRITE);

      PIKA_PROC_ARG_DOUBLE (procedure, "highlight",
                            _("Highligh_t"),
                            _("Material highlight "
                              "(note, it's exponential)"),
                            0, G_MAXDOUBLE, 27.0,
                            G_PARAM_READWRITE);

      PIKA_PROC_ARG_BOOLEAN (procedure, "antialiasing",
                             _("Antialia_sing"),
                             _("Apply antialiasing"),
                             TRUE,
                             G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "depth",
                            _("_Depth"),
                            _("Antialiasing quality. Higher is better, "
                              "but slower"),
                            1.0, 5.0, 3.0,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "threshold",
                            _("Thr_eshold"),
                            _("Stop when pixel differences are smaller than "
                              "this value"),
                            0.001, 1000.0, 0.250,
                            G_PARAM_READWRITE);

      PIKA_PROC_ARG_BOOLEAN (procedure, "tiled",
                             _("_Tile source image"),
                             _("Tile source image"),
                             FALSE,
                             G_PARAM_READWRITE);

      PIKA_PROC_ARG_BOOLEAN (procedure, "new-image",
                             _("Create _new image"),
                             _("Create a new image"),
                             FALSE,
                             G_PARAM_READWRITE);

      PIKA_PROC_ARG_BOOLEAN (procedure, "new-layer",
                             _("Create ne_w layer"),
                             _("Create a new layer when applying filter"),
                             FALSE,
                             G_PARAM_READWRITE);

      PIKA_PROC_ARG_BOOLEAN (procedure, "transparent-background",
                             _("Transparent bac_kground"),
                             _("Make background transparent"),
                             FALSE,
                             G_PARAM_READWRITE);

      /* Sphere Options */
      PIKA_PROC_ARG_DOUBLE (procedure, "sphere-radius",
                            _("Radi_us"),
                            _("Sphere radius"),
                            0, G_MAXDOUBLE, 0.25,
                            G_PARAM_READWRITE);

      /* Box Options */
      PIKA_PROC_ARG_DRAWABLE (procedure, "box-front-drawable",
                              _("Fro_nt"),
                              _("Box front face "
                                "(set this to NULL if not used)"),
                              TRUE,
                              G_PARAM_READWRITE);
      PIKA_PROC_ARG_DRAWABLE (procedure, "box-back-drawable",
                              _("B_ack"),
                              _("Box back face"),
                              TRUE,
                              G_PARAM_READWRITE);
      PIKA_PROC_ARG_DRAWABLE (procedure, "box-top-drawable",
                              _("To_p"),
                              _("Box top face"),
                              TRUE,
                              G_PARAM_READWRITE);
      PIKA_PROC_ARG_DRAWABLE (procedure, "box-bottom-drawable",
                              _("Bo_ttom"),
                              _("Box bottom face"),
                              TRUE,
                              G_PARAM_READWRITE);
      PIKA_PROC_ARG_DRAWABLE (procedure, "box-left-drawable",
                              _("Le_ft"),
                              _("Box left face"),
                              TRUE,
                              G_PARAM_READWRITE);
      PIKA_PROC_ARG_DRAWABLE (procedure, "box-right-drawable",
                              _("Ri_ght"),
                              _("Box right face"),
                              TRUE,
                              G_PARAM_READWRITE);

      PIKA_PROC_ARG_DOUBLE (procedure, "x-scale",
                            _("Scale X"),
                            _("Box X size"),
                            0, G_MAXDOUBLE, 0.5,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "y-scale",
                            _("Scale Y"),
                            _("Box Y size"),
                            0, G_MAXDOUBLE, 0.5,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "z-scale",
                            _("Scale Z"),
                            _("Box Z size"),
                            0, G_MAXDOUBLE, 0.5,
                            G_PARAM_READWRITE);

      /* Cylinder options */
      PIKA_PROC_ARG_DRAWABLE (procedure, "cyl-top-drawable",
                              _("_Top"),
                              _("Cylinder top face "
                                "(set this to NULL if not used)"),
                              TRUE,
                              G_PARAM_READWRITE);
      PIKA_PROC_ARG_DRAWABLE (procedure, "cyl-bottom-drawable",
                              _("_Bottom"),
                              _("Cylinder bottom face "
                                "(set this to NULL if not used)"),
                              TRUE,
                              G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "cylinder-radius",
                            _("Radi_us"),
                            _("Cylinder radius"),
                            0, G_MAXDOUBLE, 0.25,
                            G_PARAM_READWRITE);
      PIKA_PROC_ARG_DOUBLE (procedure, "cylinder-length",
                            _("Cylin_der length"),
                            _("Cylinder length"),
                            0, G_MAXDOUBLE, 0.25,
                            G_PARAM_READWRITE);
    }

  return procedure;
}

static void
set_default_settings (void)
{
  gint i;

  pika_vector3_set (&mapvals.viewpoint,  0.5, 0.5, 2.0);
  pika_vector3_set (&mapvals.firstaxis,  1.0, 0.0, 0.0);
  pika_vector3_set (&mapvals.secondaxis, 0.0, 1.0, 0.0);
  pika_vector3_set (&mapvals.normal,     0.0, 0.0, 1.0);
  pika_vector3_set (&mapvals.position,   0.5, 0.5, 0.0);
  pika_vector3_set (&mapvals.lightsource.position,  -0.5, -0.5, 2.0);
  pika_vector3_set (&mapvals.lightsource.direction, -1.0, -1.0, 1.0);
  pika_vector3_set (&mapvals.scale,      0.5, 0.5, 0.5);

  mapvals.maptype = MAP_PLANE;

  mapvals.pixelthreshold  = 0.25;
  mapvals.alpha           = 0.0;
  mapvals.beta            = 0.0;
  mapvals.gamma           = 0.0;
  mapvals.maxdepth        = 3.0;
  mapvals.radius          = 0.25;
  mapvals.cylinder_radius = 0.25;
  mapvals.cylinder_length = 1.0;

  mapvals.zoom             = 1.0;
  mapvals.lightsource.type = POINT_LIGHT;

  mapvals.antialiasing           = TRUE;
  mapvals.create_new_image       = FALSE;
  mapvals.create_new_layer       = FALSE;
  mapvals.transparent_background = FALSE;
  mapvals.tiled                  = FALSE;
  mapvals.livepreview            = FALSE;
  mapvals.showgrid               = TRUE;

  mapvals.lightsource.intensity = 1.0;
  pika_rgba_set (&mapvals.lightsource.color, 1.0, 1.0, 1.0, 1.0);

  mapvals.material.ambient_int  = 0.3;
  mapvals.material.diffuse_int  = 1.0;
  mapvals.material.diffuse_ref  = 0.5;
  mapvals.material.specular_ref = 0.5;
  mapvals.material.highlight    = 27.0;

  for (i = 0; i < 6; i++)
    mapvals.boxmap_id[i] = -1;

  for (i = 0; i < 2; i++)
    mapvals.cylindermap_id[i] = -1;
}

static void
check_drawables (PikaDrawable *drawable)
{
  PikaDrawable *map;
  gint          i;

  /* Check that boxmap images are valid */
  /* ================================== */

  for (i = 0; i < 6; i++)
    {
      map = pika_drawable_get_by_id (mapvals.boxmap_id[i]);

      if (! map || pika_drawable_is_gray (map))
        mapvals.boxmap_id[i] = pika_item_get_id (PIKA_ITEM (drawable));
    }

  /* Check that cylindermap images are valid */
  /* ======================================= */

  for (i = 0; i < 2; i++)
    {
     map = pika_drawable_get_by_id (mapvals.cylindermap_id[i]);

     if (! map || pika_drawable_is_gray (map))
        mapvals.cylindermap_id[i] = pika_item_get_id (PIKA_ITEM (drawable));
    }
}

static PikaValueArray *
map_run (PikaProcedure        *procedure,
         PikaRunMode           run_mode,
         PikaImage            *_image,
         gint                  n_drawables,
         PikaDrawable        **drawables,
         PikaProcedureConfig  *config,
         gpointer              run_data)
{
  PikaDrawable *drawable;

  gegl_init (NULL, NULL);

  image = _image;

  if (n_drawables != 1)
    {
      GError *error = NULL;

      g_set_error (&error, PIKA_PLUG_IN_ERROR, 0,
                   _("Procedure '%s' only works with one drawable."),
                   pika_procedure_get_name (procedure));

      return pika_procedure_new_return_values (procedure,
                                               PIKA_PDB_CALLING_ERROR,
                                               error);
    }
  else
    {
      drawable = drawables[0];
    }

  set_default_settings ();

  switch (run_mode)
    {
    case PIKA_RUN_INTERACTIVE:
      check_drawables (drawable);

      if (! main_dialog (procedure, config, drawable))
        {
          return pika_procedure_new_return_values (procedure,
                                                   PIKA_PDB_CANCEL,
                                                   NULL);
        }

      copy_from_config (config);
      compute_image ();
      break;

    case PIKA_RUN_WITH_LAST_VALS:
      check_drawables (drawable);

      if (! image_setup (drawable, FALSE, config))
        {
          return pika_procedure_new_return_values (procedure,
                                                   PIKA_PDB_SUCCESS,
                                                   NULL);
        }

      copy_from_config (config);
      compute_image ();
      break;

    case PIKA_RUN_NONINTERACTIVE:
      check_drawables (drawable);

      if (! image_setup (drawable, FALSE, config))
        {
          return pika_procedure_new_return_values (procedure,
                                                   PIKA_PDB_SUCCESS,
                                                   NULL);
        }

      copy_from_config (config);
      compute_image ();
      break;
    }

  if (run_mode != PIKA_RUN_NONINTERACTIVE)
    pika_displays_flush ();

  return pika_procedure_new_return_values (procedure, PIKA_PDB_SUCCESS, NULL);
}