void TestGLCanvas::LoadLWO(const wxString &filename)
{
/* test if lightwave object */
if (!lw_is_lwobject(filename.mb_str())) return;
/* read lightwave object */
lwObject *lwobject = lw_object_read(filename.mb_str());
/* scale */
lw_object_scale(lwobject, 10.0 / lw_object_radius(lwobject));
/* set up mesh info */
info.do_init = true;
info.lwobject = lwobject;
info.beginx = 0.0f;
info.beginy = 0.0f;
info.zoom = 45.0f;
trackball( info.quat, 0.0f, 0.0f, 0.0f, 0.0f );
}
static gint
show_lwobject(const char *lwobject_name)
{
GtkWidget *window, *frame, *glarea;
mesh_info *info;
lwObject *lwobject;
/* read lightwave object */
if (!lw_is_lwobject(lwobject_name))
{
g_print("%s is not a LightWave 3D object\n", lwobject_name);
return FALSE;
}
lwobject = lw_object_read(lwobject_name);
if (lwobject == NULL)
{
g_print("Can't read LightWave 3D object %s\n", lwobject_name);
return FALSE;
}
lw_object_scale(lwobject, 10.0 / lw_object_radius(lwobject));
/* create aspect frame */
frame = gtk_aspect_frame_new(NULL, 0.5,0.5, VIEW_ASPECT, FALSE);
/* create new OpenGL widget */
glarea = gtk_drawing_area_new();
if (glarea == NULL)
{
lw_object_free(lwobject);
g_print("Can't create GtkDrawingArea widget\n");
return FALSE;
}
/* Set OpenGL-capability to the widget. */
gtk_widget_set_gl_capability(GTK_WIDGET (glarea),
glconfig,
NULL,
TRUE,
GDK_GL_RGBA_TYPE);
/* set up events and signals for OpenGL widget */
gtk_widget_set_events(glarea,
GDK_EXPOSURE_MASK|
GDK_BUTTON_PRESS_MASK|
GDK_BUTTON_RELEASE_MASK|
GDK_POINTER_MOTION_MASK|
GDK_POINTER_MOTION_HINT_MASK);
g_signal_connect(G_OBJECT(glarea), "draw",
G_CALLBACK(draw), NULL);
g_signal_connect(G_OBJECT(glarea), "motion_notify_event",
G_CALLBACK(motion_notify), NULL);
g_signal_connect(G_OBJECT(glarea), "button_press_event",
G_CALLBACK(button_press), NULL);
g_signal_connect(G_OBJECT(glarea), "button_release_event",
G_CALLBACK(button_release), NULL);
g_signal_connect(G_OBJECT(glarea), "configure_event",
G_CALLBACK(configure), NULL);
g_signal_connect(G_OBJECT (glarea), "map_event",
G_CALLBACK (map_event), NULL);
g_signal_connect(G_OBJECT (glarea), "unmap_event",
G_CALLBACK (unmap_event), NULL);
g_signal_connect(G_OBJECT (glarea), "visibility_notify_event",
G_CALLBACK (visibility_notify_event), NULL);
g_signal_connect(G_OBJECT(glarea), "destroy",
G_CALLBACK(destroy), NULL);
gtk_widget_set_size_request(glarea, 200,200/VIEW_ASPECT); /* minimum size */
/* set up mesh info */
info = (mesh_info*)g_malloc(sizeof(mesh_info));
info->do_init = TRUE;
info->lwobject = lwobject;
info->beginx = 0;
info->beginy = 0;
info->dx = 0;
info->dy = 0;
info->quat[0] = 0; info->quat[1] = 0; info->quat[2] = 0; info->quat[3] = 1;
info->dquat[0] = 0; info->dquat[1] = 0; info->dquat[2] = 0; info->dquat[3] = 1;
info->zoom = 45;
info->animate = FALSE;
info->timeout_id = 0;
trackball(info->quat , 0.0, 0.0, 0.0, 0.0);
g_object_set_data(G_OBJECT(glarea), "mesh_info", info);
/* create new top level window */
window = gtk_window_new( GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(window), lwobject_name);
gtk_container_set_border_width(GTK_CONTAINER(window), 10);
gtk_container_set_reallocate_redraws(GTK_CONTAINER (window), TRUE);
create_popup_menu(window); /* add popup menu to window */
/* key_press_event handler for top-level window */
g_signal_connect_swapped(G_OBJECT (window), "key_press_event",
G_CALLBACK (key_press_event), glarea);
g_signal_connect(G_OBJECT(window), "destroy",
G_CALLBACK(window_destroy), NULL);
window_count++;
/* put glarea into window and show it all */
gtk_container_add(GTK_CONTAINER(window), frame);
gtk_container_add(GTK_CONTAINER(frame),glarea);
gtk_widget_show(glarea);
gtk_widget_show(frame);
gtk_widget_show(window);
return TRUE;
}
