492 lines
17 KiB
C
492 lines
17 KiB
C
/* Lighting Effects 0.2.2 -- image filter plug-in for PIKA
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*
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* Copyright (C) 1996-98 Tom Bech
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* Copyright (C) 1996-98 Federico Mena Quintero
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*
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* E-mail: tomb@gimp.org (Tom) or quartic@gimp.org (Federico)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gtk/gtk.h>
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#include <libpika/pika.h>
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#include "lighting-apply.h"
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#include "lighting-image.h"
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#include "lighting-main.h"
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#include "lighting-preview.h"
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#include "lighting-shade.h"
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#include "lighting-ui.h"
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#include "libpika/stdplugins-intl.h"
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LightingValues mapvals;
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typedef struct _Lighting Lighting;
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typedef struct _LightingClass LightingClass;
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struct _Lighting
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{
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PikaPlugIn parent_instance;
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};
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struct _LightingClass
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{
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PikaPlugInClass parent_class;
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};
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#define LIGHTING_TYPE (lighting_get_type ())
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#define LIGHTING (obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LIGHTING_TYPE, Lighting))
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GType lighting_get_type (void) G_GNUC_CONST;
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static GList * lighting_query_procedures (PikaPlugIn *plug_in);
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static PikaProcedure * lighting_create_procedure (PikaPlugIn *plug_in,
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const gchar *name);
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static PikaValueArray * lighting_run (PikaProcedure *procedure,
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PikaRunMode run_mode,
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PikaImage *image,
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gint n_drawables,
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PikaDrawable **drawables,
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const PikaValueArray *args,
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gpointer run_data);
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static void set_default_settings (void);
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static void check_drawables (void);
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G_DEFINE_TYPE (Lighting, lighting, PIKA_TYPE_PLUG_IN)
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PIKA_MAIN (LIGHTING_TYPE)
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DEFINE_STD_SET_I18N
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static void
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lighting_class_init (LightingClass *klass)
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{
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PikaPlugInClass *plug_in_class = PIKA_PLUG_IN_CLASS (klass);
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plug_in_class->query_procedures = lighting_query_procedures;
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plug_in_class->create_procedure = lighting_create_procedure;
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plug_in_class->set_i18n = STD_SET_I18N;
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}
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static void
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lighting_init (Lighting *lighting)
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{
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}
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static GList *
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lighting_query_procedures (PikaPlugIn *plug_in)
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{
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return g_list_append (NULL, g_strdup (PLUG_IN_PROC));
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}
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static PikaProcedure *
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lighting_create_procedure (PikaPlugIn *plug_in,
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const gchar *name)
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{
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PikaProcedure *procedure = NULL;
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if (! strcmp (name, PLUG_IN_PROC))
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{
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PikaRGB white = { 1.0, 1.0, 1.0, 1.0 };
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procedure = pika_image_procedure_new (plug_in, name,
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PIKA_PDB_PROC_TYPE_PLUGIN,
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lighting_run, NULL, NULL);
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pika_procedure_set_image_types (procedure, "RGB*");
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pika_procedure_set_sensitivity_mask (procedure,
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PIKA_PROCEDURE_SENSITIVE_DRAWABLE);
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pika_procedure_set_menu_label (procedure, _("_Lighting Effects..."));
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pika_procedure_add_menu_path (procedure,
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"<Image>/Filters/Light and Shadow/[Light]");
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pika_procedure_set_documentation (procedure,
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_("Apply various lighting effects "
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"to an image"),
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"No help yet",
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name);
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pika_procedure_set_attribution (procedure,
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"Tom Bech & Federico Mena Quintero",
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"Tom Bech & Federico Mena Quintero",
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"Version 0.2.0, March 15 1998");
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PIKA_PROC_ARG_DRAWABLE (procedure, "bump-drawable",
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"Bump drawable",
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"Bumpmap drawable (set to NULL if disabled)",
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TRUE,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_DRAWABLE (procedure, "env-drawable",
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"Env drawable",
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"Environmentmap drawable (set to NULL if disabled",
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TRUE,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_BOOLEAN (procedure, "do-bumpmap",
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"Do bumpmap",
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"Enable bumpmapping",
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TRUE,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_BOOLEAN (procedure, "do-envmap",
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"Do envmap",
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"Enable envmapping",
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TRUE,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_INT (procedure, "bumpmap-type",
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"Bumpmap type",
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"Type of mapping (0=linear, 1=log, 2=sinusoidal, "
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"3=spherical)",
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0, 2, 0,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_INT (procedure, "light-type",
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"Light type",
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"Type of lightsource (0=point, 1=directional, "
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"3=spot, 4=none)",
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0 ,4, 0,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_RGB (procedure, "light-color",
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"Light color",
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"Light source color",
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TRUE, &white,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_DOUBLE (procedure, "light-position-x",
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"Light position X",
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"Light source position (x,y,z)",
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-G_MAXDOUBLE, G_MAXDOUBLE, -1,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_DOUBLE (procedure, "light-position-y",
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"Light position Y",
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"Light source position (x,y,z)",
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-G_MAXDOUBLE, G_MAXDOUBLE, -1,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_DOUBLE (procedure, "light-position-z",
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"Light position Z",
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"Light source position (x,y,z)",
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-G_MAXDOUBLE, G_MAXDOUBLE, -1,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_DOUBLE (procedure, "light-direction-x",
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"Light direction X",
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"Light source direction (x,y,z)",
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-G_MAXDOUBLE, G_MAXDOUBLE, -1,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_DOUBLE (procedure, "light-direction-y",
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"Light direction Y",
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"Light source direction (x,y,z)",
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-G_MAXDOUBLE, G_MAXDOUBLE, -1,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_DOUBLE (procedure, "light-direction-z",
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"Light direction Z",
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"Light source direction (x,y,z)",
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-G_MAXDOUBLE, G_MAXDOUBLE, 1,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_DOUBLE (procedure, "ambient-intensity",
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"Ambient intensity",
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"Material ambient intensity",
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0, 1, 0.2,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_DOUBLE (procedure, "diffuse-intensity",
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"Diffuse intensity",
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"Material diffuse intensity",
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0, 1, 0.5,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_DOUBLE (procedure, "diffuse-reflectivity",
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"Diffuse reflectivity",
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"Material diffuse reflectivity",
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0, 1, 0.4,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_DOUBLE (procedure, "specular-reflectivity",
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"Specular reflectivity",
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"Material specular reflectivity",
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0, 1, 0.5,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_DOUBLE (procedure, "highlight",
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"Highlight",
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"Material highlight (note, it's exponential)",
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0, G_MAXDOUBLE, 27.0,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_BOOLEAN (procedure, "antialiasing",
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"Antialiasing",
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"Apply antialiasing",
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FALSE,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_BOOLEAN (procedure, "new-image",
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"New image",
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"Create a new image",
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FALSE,
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G_PARAM_READWRITE);
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PIKA_PROC_ARG_BOOLEAN (procedure, "transparent-background",
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"Transparent background",
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"Make background transparent",
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FALSE,
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G_PARAM_READWRITE);
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}
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return procedure;
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}
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static void
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set_default_settings (void)
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{
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gint k;
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mapvals.update_enabled = TRUE;
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mapvals.light_selected = 0;
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mapvals.light_isolated = FALSE;
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pika_vector3_set (&mapvals.viewpoint, 0.5, 0.5, 0.25);
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pika_vector3_set (&mapvals.planenormal, 0.0, 0.0, 1.0);
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pika_vector3_set (&mapvals.lightsource[0].position, -1.0, -1.0, 1.0);
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pika_vector3_set (&mapvals.lightsource[0].direction, -1.0, -1.0, 1.0);
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pika_rgba_set (&mapvals.lightsource[0].color, 1.0, 1.0, 1.0, 1.0);
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mapvals.lightsource[0].intensity = 1.0;
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mapvals.lightsource[0].type = POINT_LIGHT;
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mapvals.lightsource[0].active = TRUE;
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/* init lights 2 and 3 pos to upper left and below */
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pika_vector3_set (&mapvals.lightsource[1].position, 2.0, -1.0, 1.0);
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pika_vector3_set (&mapvals.lightsource[1].direction, 1.0, -1.0, 1.0);
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pika_vector3_set (&mapvals.lightsource[2].position, 1.0, 2.0, 1.0);
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pika_vector3_set (&mapvals.lightsource[2].direction, 0.0, 1.0, 1.0);
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/* init any remaining lights to directly overhead */
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for (k = 3; k < NUM_LIGHTS; k++)
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{
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pika_vector3_set (&mapvals.lightsource[k].position, 0.0, 0.0, 1.0);
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pika_vector3_set (&mapvals.lightsource[k].direction, 0.0, 0.0, 1.0);
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}
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for (k = 1; k < NUM_LIGHTS; k++)
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{
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pika_rgba_set (&mapvals.lightsource[k].color, 1.0, 1.0, 1.0, 1.0);
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mapvals.lightsource[k].intensity = 1.0;
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mapvals.lightsource[k].type = NO_LIGHT;
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mapvals.lightsource[k].active = TRUE;
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}
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mapvals.material.ambient_int = 0.2;
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mapvals.material.diffuse_int = 0.5;
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mapvals.material.diffuse_ref = 0.4;
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mapvals.material.specular_ref = 0.5;
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mapvals.material.highlight = 27.0;
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mapvals.material.metallic = FALSE;
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mapvals.pixel_threshold = 0.25;
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mapvals.max_depth = 3.0;
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mapvals.preview_zoom_factor = 1.0;
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mapvals.bumpmaptype = 0;
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mapvals.bumpmin = 0.0;
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mapvals.bumpmax = 0.1;
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mapvals.antialiasing = FALSE;
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mapvals.create_new_image = FALSE;
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mapvals.transparent_background = FALSE;
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mapvals.bump_mapped = FALSE;
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mapvals.env_mapped = FALSE;
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mapvals.ref_mapped = FALSE;
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mapvals.previewquality = FALSE;
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mapvals.interactive_preview = TRUE;
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mapvals.bumpmap_id = -1;
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mapvals.envmap_id = -1;
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}
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static void
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check_drawables (void)
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{
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PikaDrawable *drawable;
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PikaDrawable *map;
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if (mapvals.bump_mapped)
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{
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if (! pika_item_id_is_drawable (mapvals.bumpmap_id))
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{
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mapvals.bump_mapped = FALSE;
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mapvals.bumpmap_id = -1;
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}
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else
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{
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drawable = pika_drawable_get_by_id (mapvals.drawable_id);
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map = pika_drawable_get_by_id (mapvals.bumpmap_id);
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if (pika_drawable_is_indexed (map) ||
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(pika_drawable_get_width (drawable) != pika_drawable_get_width (map)) ||
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(pika_drawable_get_height (drawable) != pika_drawable_get_height (map)))
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{
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mapvals.bump_mapped = FALSE;
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mapvals.bumpmap_id = -1;
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}
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}
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}
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if (mapvals.env_mapped)
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{
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if (! pika_item_id_is_drawable (mapvals.envmap_id))
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{
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mapvals.env_mapped = FALSE;
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mapvals.envmap_id = -1;
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}
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else
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{
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map = pika_drawable_get_by_id (mapvals.envmap_id);
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if (pika_drawable_is_gray (map) ||
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pika_drawable_has_alpha (map))
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{
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mapvals.env_mapped = FALSE;
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mapvals.envmap_id = -1;
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}
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}
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}
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}
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static PikaValueArray *
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lighting_run (PikaProcedure *procedure,
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PikaRunMode run_mode,
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PikaImage *image,
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gint n_drawables,
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PikaDrawable **drawables,
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const PikaValueArray *args,
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gpointer run_data)
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{
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PikaDrawable *drawable;
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gegl_init (NULL, NULL);
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if (n_drawables != 1)
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{
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GError *error = NULL;
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g_set_error (&error, PIKA_PLUG_IN_ERROR, 0,
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_("Procedure '%s' only works with one drawable."),
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pika_procedure_get_name (procedure));
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return pika_procedure_new_return_values (procedure,
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PIKA_PDB_CALLING_ERROR,
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error);
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}
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else
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{
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drawable = drawables[0];
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}
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set_default_settings ();
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pika_get_data (PLUG_IN_PROC, &mapvals);
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mapvals.drawable_id = pika_item_get_id (PIKA_ITEM (drawable));
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check_drawables ();
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if (pika_drawable_is_rgb (drawable))
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{
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switch (run_mode)
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{
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case PIKA_RUN_INTERACTIVE:
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if (! main_dialog (drawable))
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{
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return pika_procedure_new_return_values (procedure,
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PIKA_PDB_CANCEL,
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NULL);
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}
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compute_image ();
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pika_set_data (PLUG_IN_PROC, &mapvals, sizeof (LightingValues));
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pika_displays_flush ();
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break;
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case PIKA_RUN_WITH_LAST_VALS:
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if (image_setup (drawable, FALSE))
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compute_image ();
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pika_displays_flush ();
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break;
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case PIKA_RUN_NONINTERACTIVE:
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mapvals.bumpmap_id = PIKA_VALUES_GET_DRAWABLE_ID (args, 0);
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mapvals.envmap_id = PIKA_VALUES_GET_DRAWABLE_ID (args, 1);
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mapvals.bump_mapped = PIKA_VALUES_GET_BOOLEAN (args, 2);
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mapvals.env_mapped = PIKA_VALUES_GET_BOOLEAN (args, 3);
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mapvals.bumpmaptype = PIKA_VALUES_GET_INT (args, 4);
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mapvals.lightsource[0].type = PIKA_VALUES_GET_INT (args, 5);
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PIKA_VALUES_GET_RGB (args, 6, &mapvals.lightsource[0].color);
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mapvals.lightsource[0].position.x = PIKA_VALUES_GET_DOUBLE (args, 7);
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mapvals.lightsource[0].position.y = PIKA_VALUES_GET_DOUBLE (args, 8);
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mapvals.lightsource[0].position.z = PIKA_VALUES_GET_DOUBLE (args, 9);
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mapvals.lightsource[0].direction.x = PIKA_VALUES_GET_DOUBLE (args, 10);
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mapvals.lightsource[0].direction.y = PIKA_VALUES_GET_DOUBLE (args, 11);
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mapvals.lightsource[0].direction.z = PIKA_VALUES_GET_DOUBLE (args, 12);
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mapvals.material.ambient_int = PIKA_VALUES_GET_DOUBLE (args, 13);
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mapvals.material.diffuse_int = PIKA_VALUES_GET_DOUBLE (args, 14);
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mapvals.material.diffuse_ref = PIKA_VALUES_GET_DOUBLE (args, 15);
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mapvals.material.specular_ref = PIKA_VALUES_GET_DOUBLE (args, 16);
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mapvals.material.highlight = PIKA_VALUES_GET_DOUBLE (args, 17);
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mapvals.antialiasing = PIKA_VALUES_GET_BOOLEAN (args, 18);
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mapvals.create_new_image = PIKA_VALUES_GET_BOOLEAN (args, 19);
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mapvals.transparent_background = PIKA_VALUES_GET_BOOLEAN (args, 20);
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check_drawables ();
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if (image_setup (drawable, FALSE))
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compute_image ();
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default:
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break;
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}
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}
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else
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{
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return pika_procedure_new_return_values (procedure,
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PIKA_PDB_EXECUTION_ERROR,
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NULL);
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}
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g_free (xpostab);
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g_free (ypostab);
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return pika_procedure_new_return_values (procedure, PIKA_PDB_SUCCESS, NULL);
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}
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