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/* $Id: g3d-thumbnailer.c 129 2009-09-05 19:45:19Z mmmaddd $ */
/*
G3DViewer - 3D object viewer
Copyright (C) 2005 - 2009 Markus Dahms <mad@automagically.de>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <GL/osmesa.h>
#include <glib.h>
#include <glib/gi18n.h>
#include <glib-object.h>
#include <g3d/g3d.h>
#include <g3d/quat.h>
#include "gl.h"
#include "screenshot.h"
#include "texture.h"
static void log_handler(const gchar *log_domain, GLogLevelFlags log_level,
const gchar *message, gpointer user_data)
{
}
int main(int argc, char *argv[])
{
OSMesaContext omctxt;
G3DContext *context;
G3DModel *model;
G3DGLRenderOptions *options;
G3DQuat q1[4], q2[4];
G3DVector a1[3] = { 0.0, 1.0, 0.0 }, a2[3] = {1.0, 0.0, 1.0};
guint32 width = 128;
guint32 height = 128;
gint retval = EXIT_FAILURE;
guint8 *imgbuf;
GError *error = NULL;
GOptionContext *opt_ctxt;
gdouble opt_angle_x = 45.0;
gdouble opt_angle_y = 45.0;
gint32 opt_height = 0;
gchar *opt_bgcolor = NULL;
guint32 bgcolor;
GOptionEntry opt_entries[] = {
{ "angle-x", 'x', 0, G_OPTION_ARG_DOUBLE, &opt_angle_x,
_("x rotation of view angle"), NULL },
{ "angle-y", 'y', 0, G_OPTION_ARG_DOUBLE, &opt_angle_y,
_("y rotation of view angle"), NULL },
{ "bgcolor", 'c', 0, G_OPTION_ARG_STRING, &opt_bgcolor,
_("background color in #RRGGBBAA notation"), NULL },
{ "height", 'h', 0, G_OPTION_ARG_INT, &opt_height,
_("height of image in px (default: width)"), NULL },
{ NULL }
};
/* localization stuff */
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
g_type_init();
opt_ctxt = g_option_context_new(
_("<input model> <output image> [<width in px>]"));
g_option_context_add_main_entries(opt_ctxt, opt_entries, PACKAGE);
g_option_context_parse(opt_ctxt, &argc, &argv, &error);
if(error) {
g_warning("option parser: %s", error->message);
g_error_free(error);
error = NULL;
}
if(argc < 3) {
g_print(_("usage: %s <input file: model> <output file: image> "
"[<width in px>]\n"),
argv[0]);
return EXIT_FAILURE;
}
g_option_context_free(opt_ctxt);
g_log_set_handler("LibG3D", G_LOG_LEVEL_DEBUG, log_handler, NULL);
if(argc > 3) {
/* size */
width = atoi(argv[3]);
/* height = width / 4 * 3; */
if(opt_height > 0)
height = opt_height;
else
height = width;
}
/* initialize render options */
options = g_new0(G3DGLRenderOptions, 1);
options->updated = TRUE;
options->initialized = FALSE;
options->glflags =
G3D_FLAG_GL_SHININESS | G3D_FLAG_GL_ALLTWOSIDE |
G3D_FLAG_GL_TEXTURES | G3D_FLAG_GL_COLORS;
options->zoom = 40;
options->aspect = (gfloat)width / (gfloat)height;
options->bgcolor[0] = options->bgcolor[1] = options->bgcolor[2] = 0.5;
options->bgcolor[3] = 0.0;
if(opt_bgcolor && (opt_bgcolor[0] == '#') && (strlen(opt_bgcolor) == 9)) {
bgcolor = strtoul(opt_bgcolor + 1, NULL, 16);
options->bgcolor[0] = ((bgcolor >> 24) & 0xFF) / 255.0;
options->bgcolor[1] = ((bgcolor >> 16) & 0xFF) / 255.0;
options->bgcolor[2] = ((bgcolor >> 8) & 0xFF) / 255.0;
options->bgcolor[3] = (bgcolor & 0xFF) / 255.0;
}
g3d_quat_trackball(options->quat, 0.0, 0.0, 0.0, 0.0, 0.8);
g3d_quat_rotate(q1, a1, - opt_angle_y * G_PI / 180.0);
g3d_quat_rotate(q2, a2, - opt_angle_x * G_PI / 180.0);
g3d_quat_add(options->quat, q1, q2);
/* initialize OSMesa */
omctxt = OSMesaCreateContext(OSMESA_RGBA, NULL);
if(omctxt == 0) {
g_printerr("failed to create OSMesa context");
return EXIT_FAILURE;
}
imgbuf = g_new0(guint8, width * height * 4);
if(!OSMesaMakeCurrent(omctxt, imgbuf, GL_UNSIGNED_BYTE, width, height)) {
g_printerr("OSMesaMakeCurrent failed");
return EXIT_FAILURE;
}
context = g3d_context_new();
model = g3d_model_load_full(context, argv[1],
G3D_MODEL_SCALE | G3D_MODEL_CENTER);
if(model) {
texture_load_all_textures(model);
gl_draw(options, model);
glFinish();
if(screenshot_save_from_pixels(imgbuf, argv[2], width, height))
retval = EXIT_SUCCESS;
g3d_model_free(model);
}
g3d_context_free(context);
OSMesaDestroyContext(omctxt);
g_free(imgbuf);
g_free(options);
return retval;
}
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