mirror of https://github.com/GNOME/gimp.git
984 lines
32 KiB
C
984 lines
32 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* SuperNova plug-in
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* Copyright (C) 1997 Eiichi Takamori <taka@ma1.seikyou.ne.jp>,
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* Spencer Kimball, Federico Mena Quintero
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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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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* version 1.200
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*
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* This plug-in produces an effect like a supernova burst.
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*
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* Eiichi Takamori <taka@ma1.seikyou.ne.jp>
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* http://ha1.seikyou.ne.jp/home/taka/gimp/
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*
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* Preview render mode by timecop@japan.co.jp
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* http://www.ne.jp/asahi/linux/timecop
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*
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* Changes from version 1.122 to version 1.200 by tim copperfield:
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* - preview mode now previews the nova with scale;
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* - toggle for cursor show/hide during preview
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*
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* Changes from version 1.1115 to version 1.122 by Martin Weber:
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* - Little bug fixes
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* - Added random hue
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* - Freeing memory
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*
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* Changes from version 1.1114 to version 1.1115:
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* - Added gtk_rc_parse
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* - Fixed bug that drawing preview of small height image
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* (maybe image height < PREVIEW_SIZE) caused core dump.
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* - Changed default value.
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* - Moved to <Image>/Filters/Effects. right?
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* - etc...
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*
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* Changes from version 1.1112 to version 1.1114:
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* - Modified proc args to GIMP_PDB_COLOR, also included nspoke.
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* - nova_int_entryscale_new(): Fixed caption was guchar -> gchar, etc.
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* - Now nova renders properly with alpha channel.
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* (Very thanks to Spencer Kimball and Federico Mena !)
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*
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* TODO:
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* - clean up the code more
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* - add notebook interface and so on
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <string.h>
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#include <gtk/gtk.h>
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#include <libgimp/gimp.h>
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#include <libgimp/gimpui.h>
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#include "libgimp/stdplugins-intl.h"
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#define ENTRY_WIDTH 50
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#define SCALE_WIDTH 125
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typedef struct
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{
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gint xcenter;
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gint ycenter;
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GimpRGB color;
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gint radius;
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gint nspoke;
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gint randomhue;
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gboolean preview;
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} NovaValues;
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typedef struct
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{
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GimpDrawable *drawable;
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GimpPreview *preview;
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GtkWidget *coords;
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gint cursor_drawn;
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gint curx, cury; /* x,y of cursor in preview */
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gint oldx, oldy;
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} NovaCenter;
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/* Declare a local function.
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*/
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static void query (void);
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static void run (const gchar *name,
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gint nparams,
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const GimpParam *param,
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gint *nreturn_vals,
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GimpParam **return_vals);
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static void nova (GimpDrawable *drawable,
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GimpPreview *preview);
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static gboolean nova_dialog (GimpDrawable *drawable);
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static GtkWidget * nova_center_create (GimpDrawable *drawable,
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GimpPreview *preview);
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static void nova_center_cursor_draw (NovaCenter *center);
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static void nova_center_coords_update (GimpSizeEntry *coords,
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NovaCenter *center);
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static void nova_center_cursor_update (NovaCenter *center);
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static void nova_center_preview_realize (GtkWidget *widget,
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NovaCenter *center);
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static gboolean nova_center_preview_expose (GtkWidget *widget,
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GdkEvent *event,
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NovaCenter *center);
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static gboolean nova_center_preview_events (GtkWidget *widget,
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GdkEvent *event,
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NovaCenter *center);
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GimpPlugInInfo PLUG_IN_INFO =
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{
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NULL, /* init_proc */
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NULL, /* quit_proc */
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query, /* query_proc */
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run, /* run_proc */
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};
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static NovaValues pvals =
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{
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128, 128, /* xcenter, ycenter */
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{ 0.35, 0.39, 1.0, 1.0 }, /* color */
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20, /* radius */
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100, /* nspoke */
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0, /* random hue */
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TRUE /* preview */
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};
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static gboolean show_cursor = TRUE;
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MAIN ()
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static void
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query (void)
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{
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static GimpParamDef args[]=
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{
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{ GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
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{ GIMP_PDB_IMAGE, "image", "Input image (unused)" },
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{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
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{ GIMP_PDB_INT32, "xcenter", "X coordinates of the center of supernova" },
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{ GIMP_PDB_INT32, "ycenter", "Y coordinates of the center of supernova" },
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{ GIMP_PDB_COLOR, "color", "Color of supernova" },
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{ GIMP_PDB_INT32, "radius", "Radius of supernova" },
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{ GIMP_PDB_INT32, "nspoke", "Number of spokes" },
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{ GIMP_PDB_INT32, "randomhue", "Random hue" }
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};
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gimp_install_procedure ("plug_in_nova",
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"Produce Supernova effect to the specified drawable",
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"This plug-in produces an effect like a supernova "
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"burst. The amount of the light effect is "
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"approximately in proportion to 1/r, where r is the "
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"distance from the center of the star. It works with "
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"RGB*, GRAY* image.",
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"Eiichi Takamori",
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"Eiichi Takamori",
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"May 2000",
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N_("Su_perNova..."),
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"RGB*, GRAY*",
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GIMP_PLUGIN,
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G_N_ELEMENTS (args), 0,
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args, NULL);
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gimp_plugin_menu_register ("plug_in_nova", "<Image>/Filters/Light Effects");
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}
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static void
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run (const gchar *name,
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gint nparams,
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const GimpParam *param,
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gint *nreturn_vals,
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GimpParam **return_vals)
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{
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static GimpParam values[1];
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GimpDrawable *drawable;
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GimpRunMode run_mode;
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GimpPDBStatusType status = GIMP_PDB_SUCCESS;
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INIT_I18N ();
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run_mode = param[0].data.d_int32;
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*nreturn_vals = 1;
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*return_vals = values;
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values[0].type = GIMP_PDB_STATUS;
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values[0].data.d_status = status;
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/* Get the specified drawable */
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drawable = gimp_drawable_get (param[2].data.d_drawable);
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switch (run_mode)
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{
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case GIMP_RUN_INTERACTIVE:
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/* Possibly retrieve data */
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gimp_get_data ("plug_in_nova", &pvals);
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/* First acquire information with a dialog */
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if (! nova_dialog (drawable))
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{
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gimp_drawable_detach (drawable);
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return;
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}
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break;
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case GIMP_RUN_NONINTERACTIVE:
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/* Make sure all the arguments are there! */
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if (nparams != 9)
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status = GIMP_PDB_CALLING_ERROR;
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if (status == GIMP_PDB_SUCCESS)
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{
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pvals.xcenter = param[3].data.d_int32;
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pvals.ycenter = param[4].data.d_int32;
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pvals.color = param[5].data.d_color;
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pvals.radius = param[6].data.d_int32;
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pvals.nspoke = param[7].data.d_int32;
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pvals.randomhue = param[8].data.d_int32;
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}
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if ((status == GIMP_PDB_SUCCESS) &&
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pvals.radius <= 0)
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status = GIMP_PDB_CALLING_ERROR;
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break;
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case GIMP_RUN_WITH_LAST_VALS:
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/* Possibly retrieve data */
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gimp_get_data ("plug_in_nova", &pvals);
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break;
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default:
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break;
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}
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if (status == GIMP_PDB_SUCCESS)
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{
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/* Make sure that the drawable is gray or RGB color */
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if (gimp_drawable_is_rgb (drawable->drawable_id) ||
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gimp_drawable_is_gray (drawable->drawable_id))
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{
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gimp_progress_init (_("Rendering SuperNova..."));
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gimp_tile_cache_ntiles (2 *
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(drawable->width / gimp_tile_width () + 1));
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nova (drawable, NULL);
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if (run_mode != GIMP_RUN_NONINTERACTIVE)
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gimp_displays_flush ();
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/* Store data */
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if (run_mode == GIMP_RUN_INTERACTIVE)
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gimp_set_data ("plug_in_nova", &pvals, sizeof (NovaValues));
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}
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else
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{
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/* gimp_message ("nova: cannot operate on indexed color images"); */
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status = GIMP_PDB_EXECUTION_ERROR;
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}
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}
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values[0].data.d_status = status;
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gimp_drawable_detach (drawable);
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}
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/*******************/
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/* Main Dialog */
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/*******************/
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static gboolean
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nova_dialog (GimpDrawable *drawable)
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{
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GtkWidget *dialog;
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GtkWidget *main_vbox;
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GtkWidget *preview;
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GtkWidget *frame;
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GtkWidget *table;
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GtkWidget *button;
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GtkObject *adj;
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gboolean run;
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gimp_ui_init ("nova", TRUE);
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dialog = gimp_dialog_new (_("SuperNova"), "nova",
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NULL, 0,
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gimp_standard_help_func, "plug-in-nova",
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GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
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GTK_STOCK_OK, GTK_RESPONSE_OK,
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NULL);
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main_vbox = gtk_vbox_new (FALSE, 12);
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gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
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gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dialog)->vbox), main_vbox);
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gtk_widget_show (main_vbox);
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preview = gimp_aspect_preview_new (drawable, &pvals.preview);
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gtk_widget_add_events (GIMP_PREVIEW (preview)->area,
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GDK_POINTER_MOTION_MASK);
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gtk_box_pack_start (GTK_BOX (main_vbox), preview, TRUE, TRUE, 0);
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gtk_widget_show (preview);
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g_signal_connect_swapped (preview, "invalidated",
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G_CALLBACK (nova),
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drawable);
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frame = nova_center_create (drawable, GIMP_PREVIEW (preview));
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gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
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gtk_widget_show (frame);
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table = gtk_table_new (4, 3, FALSE);
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gtk_table_set_row_spacings (GTK_TABLE (table), 6);
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gtk_table_set_col_spacings (GTK_TABLE (table), 6);
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gtk_box_pack_start (GTK_BOX (main_vbox), table, FALSE, FALSE, 0);
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gtk_widget_show (table);
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/* Color */
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if (gimp_drawable_is_rgb (drawable->drawable_id))
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{
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button = gimp_color_button_new (_("SuperNova Color Picker"),
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SCALE_WIDTH - 8, 16,
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&pvals.color, GIMP_COLOR_AREA_FLAT);
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gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
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_("Co_lor:"), 0.0, 0.5,
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button, 1, TRUE);
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g_signal_connect (button, "color_changed",
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G_CALLBACK (gimp_color_button_get_color),
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&pvals.color);
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g_signal_connect_swapped (button, "color_changed",
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G_CALLBACK (gimp_preview_invalidate),
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preview);
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}
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/* Radius */
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adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
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_("_Radius:"), SCALE_WIDTH, 8,
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pvals.radius, 1, 100, 1, 10, 0,
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FALSE, 1, GIMP_MAX_IMAGE_SIZE,
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NULL, NULL);
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g_signal_connect (adj, "value_changed",
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G_CALLBACK (gimp_int_adjustment_update),
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&pvals.radius);
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g_signal_connect_swapped (adj, "value_changed",
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G_CALLBACK (gimp_preview_invalidate),
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preview);
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/* Number of spokes */
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adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 2,
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_("_Spokes:"), SCALE_WIDTH, 8,
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pvals.nspoke, 1, 1024, 1, 16, 0,
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TRUE, 0, 0,
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NULL, NULL);
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g_signal_connect (adj, "value_changed",
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G_CALLBACK (gimp_int_adjustment_update),
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&pvals.nspoke);
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g_signal_connect_swapped (adj, "value_changed",
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G_CALLBACK (gimp_preview_invalidate),
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preview);
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/* Randomness of hue */
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if (gimp_drawable_is_rgb (drawable->drawable_id))
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{
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adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 3,
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_("R_andom hue:"), SCALE_WIDTH, 8,
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pvals.randomhue, 0, 360, 1, 15, 0,
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TRUE, 0, 0,
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NULL, NULL);
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g_signal_connect (adj, "value_changed",
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G_CALLBACK (gimp_int_adjustment_update),
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&pvals.randomhue);
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g_signal_connect_swapped (adj, "value_changed",
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G_CALLBACK (gimp_preview_invalidate),
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preview);
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}
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gtk_widget_show (dialog);
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run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
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gtk_widget_destroy (dialog);
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return run;
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}
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/*=================================================================
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CenterFrame
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A frame that contains one preview and 2 entrys, used for positioning
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of the center of Nova.
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==================================================================*/
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/*
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* Create new CenterFrame, and return it (GtkFrame).
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*/
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static GtkWidget *
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nova_center_create (GimpDrawable *drawable,
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GimpPreview *preview)
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{
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NovaCenter *center;
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GtkWidget *frame;
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GtkWidget *check;
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gint32 image_ID;
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gdouble res_x;
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gdouble res_y;
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center = g_new0 (NovaCenter, 1);
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center->drawable = drawable;
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center->preview = preview;
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center->cursor_drawn = FALSE;
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center->curx = 0;
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center->cury = 0;
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center->oldx = 0;
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center->oldy = 0;
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frame = gimp_frame_new (_("Center of SuperNova"));
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g_signal_connect_swapped (frame, "destroy",
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G_CALLBACK (g_free),
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center);
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image_ID = gimp_drawable_get_image (drawable->drawable_id);
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gimp_image_get_resolution (image_ID, &res_x, &res_y);
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center->coords = gimp_coordinates_new (GIMP_UNIT_PIXEL, "%p", TRUE, TRUE, -1,
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GIMP_SIZE_ENTRY_UPDATE_SIZE,
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FALSE, FALSE,
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_("_X:"), pvals.xcenter, res_x,
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- (gdouble) drawable->width,
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2 * drawable->width,
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0, drawable->width,
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_("_Y:"), pvals.ycenter, res_y,
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- (gdouble) drawable->height,
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2 * drawable->height,
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0, drawable->height);
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gtk_table_set_row_spacing (GTK_TABLE (center->coords), 1, 12);
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gtk_container_add (GTK_CONTAINER (frame), center->coords);
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gtk_widget_show (center->coords);
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g_signal_connect (center->coords, "value_changed",
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G_CALLBACK (nova_center_coords_update),
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center);
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g_signal_connect (center->coords, "refval_changed",
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G_CALLBACK (nova_center_coords_update),
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center);
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check = gtk_check_button_new_with_mnemonic (_("S_how cursor"));
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gtk_table_attach (GTK_TABLE (center->coords), check, 0, 5, 2, 3,
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GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
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gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check), show_cursor);
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gtk_widget_show (check);
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g_signal_connect (check, "toggled",
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G_CALLBACK (gimp_toggle_button_update),
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&show_cursor);
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g_signal_connect_swapped (check, "toggled",
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G_CALLBACK (gimp_preview_invalidate),
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preview);
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g_signal_connect (preview->area, "realize",
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G_CALLBACK (nova_center_preview_realize),
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center);
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g_signal_connect_after (preview->area, "expose_event",
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G_CALLBACK (nova_center_preview_expose),
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center);
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g_signal_connect (preview->area, "event",
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G_CALLBACK (nova_center_preview_events),
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center);
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nova_center_cursor_update (center);
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return frame;
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}
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/*
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* Drawing CenterFrame
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* if update & PREVIEW, draw preview
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* if update & CURSOR, draw cross cursor
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*/
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|
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static void
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nova_center_cursor_draw (NovaCenter *center)
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{
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GtkWidget *prvw = center->preview->area;
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gint width, height;
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|
|
|
gimp_preview_get_size (center->preview, &width, &height);
|
|
|
|
gdk_gc_set_function (prvw->style->black_gc, GDK_INVERT);
|
|
|
|
if (show_cursor)
|
|
{
|
|
if (center->cursor_drawn)
|
|
{
|
|
gdk_draw_line (prvw->window,
|
|
prvw->style->black_gc,
|
|
center->oldx, 1, center->oldx,
|
|
height - 1);
|
|
gdk_draw_line (prvw->window,
|
|
prvw->style->black_gc,
|
|
1, center->oldy,
|
|
width - 1, center->oldy);
|
|
}
|
|
|
|
gdk_draw_line (prvw->window,
|
|
prvw->style->black_gc,
|
|
center->curx, 1, center->curx,
|
|
height - 1);
|
|
gdk_draw_line (prvw->window,
|
|
prvw->style->black_gc,
|
|
1, center->cury,
|
|
width - 1, center->cury);
|
|
}
|
|
|
|
/* current position of cursor is updated */
|
|
center->oldx = center->curx;
|
|
center->oldy = center->cury;
|
|
center->cursor_drawn = TRUE;
|
|
|
|
gdk_gc_set_function (prvw->style->black_gc, GDK_COPY);
|
|
}
|
|
|
|
/*
|
|
* CenterFrame entry callback
|
|
*/
|
|
static void
|
|
nova_center_coords_update (GimpSizeEntry *coords,
|
|
NovaCenter *center)
|
|
{
|
|
pvals.xcenter = gimp_size_entry_get_refval (coords, 0);
|
|
pvals.ycenter = gimp_size_entry_get_refval (coords, 1);
|
|
|
|
nova_center_cursor_update (center);
|
|
nova_center_cursor_draw (center);
|
|
|
|
gimp_preview_invalidate (center->preview);
|
|
}
|
|
|
|
/*
|
|
* Update the cross cursor's coordinates accoding to pvals.[xy]center
|
|
* but not redraw it
|
|
*/
|
|
static void
|
|
nova_center_cursor_update (NovaCenter *center)
|
|
{
|
|
gint width, height;
|
|
|
|
gimp_preview_get_size (center->preview, &width, &height);
|
|
|
|
center->curx = pvals.xcenter * width / center->drawable->width;
|
|
center->cury = pvals.ycenter * height / center->drawable->height;
|
|
|
|
center->curx = CLAMP (center->curx, 0, width - 1);
|
|
center->cury = CLAMP (center->cury, 0, height - 1);
|
|
}
|
|
|
|
/*
|
|
* Set the preview area'a cursor on realize
|
|
*/
|
|
static void
|
|
nova_center_preview_realize (GtkWidget *widget,
|
|
NovaCenter *center)
|
|
{
|
|
GdkDisplay *display = gtk_widget_get_display (widget);
|
|
GdkCursor *cursor = gdk_cursor_new_for_display (display, GDK_CROSSHAIR);
|
|
|
|
gimp_preview_set_default_cursor (center->preview, cursor);
|
|
gdk_cursor_unref (cursor);
|
|
}
|
|
|
|
/*
|
|
* Handle the expose event on the preview
|
|
*/
|
|
static gboolean
|
|
nova_center_preview_expose (GtkWidget *widget,
|
|
GdkEvent *event,
|
|
NovaCenter *center)
|
|
{
|
|
center->cursor_drawn = FALSE;
|
|
|
|
nova_center_cursor_update (center);
|
|
nova_center_cursor_draw (center);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
* Handle other events on the preview
|
|
*/
|
|
static gboolean
|
|
nova_center_preview_events (GtkWidget *widget,
|
|
GdkEvent *event,
|
|
NovaCenter *center)
|
|
{
|
|
gint width, height;
|
|
|
|
gimp_preview_get_size (center->preview, &width, &height);
|
|
|
|
switch (event->type)
|
|
{
|
|
case GDK_MOTION_NOTIFY:
|
|
if (! (((GdkEventMotion *) event)->state & GDK_BUTTON1_MASK))
|
|
break;
|
|
|
|
case GDK_BUTTON_PRESS:
|
|
gtk_widget_get_pointer (widget, ¢er->curx, ¢er->cury);
|
|
|
|
nova_center_cursor_draw (center);
|
|
|
|
g_signal_handlers_block_by_func (center->coords,
|
|
nova_center_coords_update,
|
|
center);
|
|
|
|
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (center->coords), 0,
|
|
center->curx * center->drawable->width /
|
|
width);
|
|
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (center->coords), 1,
|
|
center->cury * center->drawable->height /
|
|
height);
|
|
|
|
g_signal_handlers_unblock_by_func (center->coords,
|
|
nova_center_coords_update,
|
|
center);
|
|
|
|
nova_center_coords_update (GIMP_SIZE_ENTRY (center->coords), center);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
################################################################
|
|
## ##
|
|
## Main Calculation ##
|
|
## ##
|
|
################################################################
|
|
*/
|
|
|
|
static gdouble
|
|
gauss (GRand *gr)
|
|
{
|
|
gdouble sum = 0.0;
|
|
gint i;
|
|
|
|
for (i = 0; i < 6; i++)
|
|
sum += (gdouble) g_rand_double (gr);
|
|
|
|
return sum / 6.0;
|
|
}
|
|
|
|
static void
|
|
nova (GimpDrawable *drawable,
|
|
GimpPreview *preview)
|
|
{
|
|
GimpPixelRgn src_rgn;
|
|
GimpPixelRgn dest_rgn;
|
|
gpointer pr;
|
|
guchar *src_row, *dest_row, *save_src;
|
|
guchar *src, *dest;
|
|
gint x1, y1, x2, y2, x, y;
|
|
gint row, col;
|
|
gint alpha, bpp;
|
|
gint progress, max_progress;
|
|
gboolean has_alpha;
|
|
gint xc, yc; /* center of nova */
|
|
gdouble u, v, l, w, w1, c, t;
|
|
gdouble *spoke;
|
|
gdouble nova_alpha, src_alpha, new_alpha = 0.0;
|
|
gdouble compl_ratio, ratio;
|
|
GimpRGB color;
|
|
GimpRGB *spokecolor;
|
|
GimpHSV hsv;
|
|
gdouble spokecol;
|
|
gint i;
|
|
GRand *gr;
|
|
guchar *cache = NULL;
|
|
gint width, height;
|
|
|
|
gr = g_rand_new ();
|
|
|
|
/* initialize */
|
|
has_alpha = gimp_drawable_has_alpha (drawable->drawable_id);
|
|
|
|
spoke = g_new (gdouble, pvals.nspoke);
|
|
spokecolor = g_new (GimpRGB, pvals.nspoke);
|
|
|
|
gimp_rgb_set_alpha (&pvals.color, 1.0);
|
|
gimp_rgb_to_hsv (&pvals.color, &hsv);
|
|
|
|
for (i = 0; i < pvals.nspoke; i++)
|
|
{
|
|
spoke[i] = gauss (gr);
|
|
|
|
hsv.h += ((gdouble) pvals.randomhue / 360.0) *
|
|
g_rand_double_range (gr, -0.5, 0.5);
|
|
if (hsv.h < 0)
|
|
hsv.h += 1.0;
|
|
else if (hsv.h >= 1.0)
|
|
hsv.h -= 1.0;
|
|
|
|
gimp_hsv_to_rgb (&hsv, spokecolor + i);
|
|
}
|
|
|
|
if (preview)
|
|
{
|
|
gimp_preview_get_size (preview, &width, &height);
|
|
bpp = gimp_drawable_bpp (drawable->drawable_id);
|
|
cache = gimp_drawable_get_thumbnail_data (drawable->drawable_id,
|
|
&width, &height, &bpp);
|
|
xc = (gdouble) pvals.xcenter * width / drawable->width;
|
|
yc = (gdouble) pvals.ycenter * height / drawable->height;
|
|
|
|
x1 = y1 = 0;
|
|
x2 = width;
|
|
y2 = height;
|
|
}
|
|
else
|
|
{
|
|
gimp_drawable_mask_bounds (drawable->drawable_id, &x1, &y1, &x2, &y2);
|
|
bpp = gimp_drawable_bpp (drawable->drawable_id);
|
|
xc = pvals.xcenter;
|
|
yc = pvals.ycenter;
|
|
|
|
gimp_pixel_rgn_init (&src_rgn, drawable,
|
|
x1, y1, x2-x1, y2-y1, FALSE, FALSE);
|
|
gimp_pixel_rgn_init (&dest_rgn, drawable,
|
|
x1, y1, x2-x1, y2-y1, TRUE, TRUE);
|
|
}
|
|
alpha = (has_alpha) ? bpp - 1 : bpp;
|
|
|
|
/* Initialize progress */
|
|
progress = 0;
|
|
max_progress = (x2 - x1) * (y2 - y1);
|
|
|
|
if (preview)
|
|
{
|
|
save_src = src_row = g_new (guchar, y2 * width * bpp);
|
|
memcpy (src_row, cache, y2 * width * bpp);
|
|
|
|
dest_row = g_new (guchar, y2 * width * bpp);
|
|
dest = dest_row;
|
|
src = src_row;
|
|
|
|
for (row = 0, y = 0; row < y2; row++, y++)
|
|
{
|
|
|
|
for (col = 0, x = 0; col < x2; col++, x++)
|
|
{
|
|
u = (gdouble) (x - xc) /
|
|
(pvals.radius * width / drawable->width);
|
|
v = (gdouble) (y - yc) /
|
|
(pvals.radius * height / drawable->height);
|
|
l = sqrt (u * u + v * v);
|
|
|
|
/* This algorithm is still under construction. */
|
|
t = (atan2 (u, v) / (2 * G_PI) + .51) * pvals.nspoke;
|
|
i = (gint) floor (t);
|
|
t -= i;
|
|
i %= pvals.nspoke;
|
|
w1 = spoke[i] * (1 - t) + spoke[(i + 1) % pvals.nspoke] * t;
|
|
w1 = w1 * w1;
|
|
|
|
w = 1.0 / (l + 0.001) * 0.9;
|
|
|
|
nova_alpha = CLAMP (w, 0.0, 1.0);
|
|
|
|
if (has_alpha)
|
|
{
|
|
src_alpha = (gdouble) src[alpha] / 255.0;
|
|
new_alpha = src_alpha + (1.0 - src_alpha) * nova_alpha;
|
|
if (new_alpha != 0.0)
|
|
ratio = nova_alpha / new_alpha;
|
|
else
|
|
ratio = 0.0;
|
|
}
|
|
else
|
|
ratio = nova_alpha;
|
|
|
|
compl_ratio = 1.0 - ratio;
|
|
|
|
/* red or gray */
|
|
spokecol = (gdouble)spokecolor[i ].r * (1.0-t) +
|
|
(gdouble)spokecolor[(i+1) % pvals.nspoke].r * t;
|
|
|
|
if (w>1.0)
|
|
color.r = CLAMP (spokecol * w, 0.0, 1.0);
|
|
else
|
|
color.r = src[0]/255.0 * compl_ratio + spokecol * ratio;
|
|
c = CLAMP (w1 * w, 0.0, 1.0);
|
|
color.r += c;
|
|
dest[0] = CLAMP (color.r*255.0, 0, 255);
|
|
|
|
if (bpp>2)
|
|
{
|
|
/* green */
|
|
spokecol = (gdouble)spokecolor[i ].g * (1.0-t) +
|
|
(gdouble)spokecolor[(i+1) % pvals.nspoke].g * t;
|
|
|
|
if (w>1.0)
|
|
color.g = CLAMP (spokecol * w, 0.0, 1.0);
|
|
else
|
|
color.g = src[1]/255.0 * compl_ratio + spokecol * ratio;
|
|
c = CLAMP (w1 * w, 0.0, 1.0);
|
|
color.g += c;
|
|
dest[1] = CLAMP (color.g*255.0, 0, 255);
|
|
|
|
/* blue */
|
|
spokecol = (gdouble)spokecolor[i ].b * (1.0-t) +
|
|
(gdouble)spokecolor[(i+1) % pvals.nspoke].b * t;
|
|
|
|
if (w>1.0)
|
|
color.b = CLAMP (spokecol * w, 0.0, 1.0);
|
|
else
|
|
color.b = src[2]/255.0 * compl_ratio + spokecol * ratio;
|
|
c = CLAMP (w1 * w, 0.0, 1.0);
|
|
color.b += c;
|
|
dest[2] = CLAMP (color.b*255.0, 0, 255);
|
|
}
|
|
|
|
/* alpha */
|
|
if (has_alpha)
|
|
dest[alpha] = new_alpha * 255.0;
|
|
|
|
src += bpp;
|
|
dest += bpp;
|
|
}
|
|
}
|
|
gimp_preview_draw_buffer (preview, dest_row, bpp * width);
|
|
g_free (cache);
|
|
g_free (save_src);
|
|
g_free (dest_row);
|
|
}
|
|
else
|
|
{ /* normal mode */
|
|
for (pr = gimp_pixel_rgns_register (2, &src_rgn, &dest_rgn);
|
|
pr != NULL ;
|
|
pr = gimp_pixel_rgns_process (pr))
|
|
{
|
|
src_row = src_rgn.data;
|
|
dest_row = dest_rgn.data;
|
|
|
|
for (row = 0, y = src_rgn.y; row < src_rgn.h; row++, y++)
|
|
{
|
|
src = src_row;
|
|
dest = dest_row;
|
|
|
|
for (col = 0, x = src_rgn.x; col < src_rgn.w; col++, x++)
|
|
{
|
|
u = (gdouble) (x-xc) / pvals.radius;
|
|
v = (gdouble) (y-yc) / pvals.radius;
|
|
l = sqrt(u*u + v*v);
|
|
|
|
/* This algorithm is still under construction. */
|
|
t = (atan2 (u, v) / (2 * G_PI) + .51) * pvals.nspoke;
|
|
i = (gint) floor (t);
|
|
t -= i;
|
|
i %= pvals.nspoke;
|
|
w1 = spoke[i] * (1 - t) + spoke[(i + 1) % pvals.nspoke] * t;
|
|
w1 = w1 * w1;
|
|
|
|
w = 1/(l+0.001)*0.9;
|
|
|
|
nova_alpha = CLAMP (w, 0.0, 1.0);
|
|
|
|
if (has_alpha)
|
|
{
|
|
src_alpha = (gdouble) src[alpha] / 255.0;
|
|
new_alpha = src_alpha + (1.0 - src_alpha) * nova_alpha;
|
|
|
|
if (new_alpha != 0.0)
|
|
ratio = nova_alpha / new_alpha;
|
|
else
|
|
ratio = 0.0;
|
|
}
|
|
else
|
|
ratio = nova_alpha;
|
|
|
|
compl_ratio = 1.0 - ratio;
|
|
|
|
switch (bpp)
|
|
{
|
|
case 1:
|
|
case 2:
|
|
/* gray */
|
|
spokecol = (gdouble)spokecolor[i ].r * (1.0-t) +
|
|
(gdouble)spokecolor[(i+1) % pvals.nspoke].r * t;
|
|
if (w>1.0)
|
|
color.r = CLAMP (spokecol * w, 0.0, 1.0);
|
|
else
|
|
color.r = src[0]/255.0 * compl_ratio + spokecol * ratio;
|
|
c = CLAMP (w1 * w, 0.0, 1.0);
|
|
color.r += c;
|
|
dest[0] = CLAMP (color.r*255.0, 0, 255);
|
|
break;
|
|
case 3:
|
|
case 4:
|
|
/* red */
|
|
spokecol = (gdouble)spokecolor[i ].r * (1.0-t) +
|
|
(gdouble)spokecolor[(i+1) % pvals.nspoke].r * t;
|
|
if (w>1.0)
|
|
color.r = CLAMP (spokecol * w, 0.0, 1.0);
|
|
else
|
|
color.r = src[0]/255.0 * compl_ratio + spokecol * ratio;
|
|
c = CLAMP (w1 * w, 0.0, 1.0);
|
|
color.r += c;
|
|
dest[0] = CLAMP (color.r*255.0, 0, 255);
|
|
/* green */
|
|
spokecol = (gdouble)spokecolor[i ].g * (1.0-t) +
|
|
(gdouble)spokecolor[(i+1) % pvals.nspoke].g * t;
|
|
if (w>1.0)
|
|
color.g = CLAMP (spokecol * w, 0.0, 1.0);
|
|
else
|
|
color.g = src[1]/255.0 * compl_ratio + spokecol * ratio;
|
|
c = CLAMP (w1 * w, 0.0, 1.0);
|
|
color.g += c;
|
|
dest[1] = CLAMP (color.g*255.0, 0, 255);
|
|
/* blue */
|
|
spokecol = (gdouble)spokecolor[i ].b * (1.0-t) +
|
|
(gdouble)spokecolor[(i+1) % pvals.nspoke].b * t;
|
|
if (w>1.0)
|
|
color.b = CLAMP (spokecol * w, 0.0, 1.0);
|
|
else
|
|
color.b = src[2]/255.0 * compl_ratio + spokecol * ratio;
|
|
c = CLAMP (w1 * w, 0.0, 1.0);
|
|
color.b += c;
|
|
dest[2] = CLAMP (color.b*255.0, 0, 255);
|
|
break;
|
|
}
|
|
|
|
if (has_alpha)
|
|
dest[alpha] = new_alpha * 255.0;
|
|
|
|
src += src_rgn.bpp;
|
|
dest += dest_rgn.bpp;
|
|
}
|
|
src_row += src_rgn.rowstride;
|
|
dest_row += dest_rgn.rowstride;
|
|
}
|
|
|
|
/* Update progress */
|
|
progress += src_rgn.w * src_rgn.h;
|
|
gimp_progress_update ((gdouble) progress / (gdouble) max_progress);
|
|
}
|
|
|
|
gimp_drawable_flush (drawable);
|
|
gimp_drawable_merge_shadow (drawable->drawable_id, TRUE);
|
|
gimp_drawable_update (drawable->drawable_id,
|
|
x1, y1, (x2 - x1), (y2 - y1));
|
|
}
|
|
|
|
g_free (spoke);
|
|
g_free (spokecolor);
|
|
g_rand_free (gr);
|
|
}
|