/*
- * Copyright (C) 2009 Andy Spencer <spenceal@rose-hulman.edu>
+ * Copyright (C) 2009-2010 Andy Spencer <andy753421@gmail.com>
*
* 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+/**
+ * SECTION:env
+ * @short_description: Environment plugin
+ *
+ * #GisPluginEnv provides environmental information such as sky images. It can
+ * also paint a blank overlay on the surface so that other plugins can draw
+ * transparent overlays nicely.
+ */
+
#include <math.h>
#include <gtk/gtkgl.h>
#include <GL/gl.h>
-#include <gis/gis.h>
+#include <grits.h>
#include "env.h"
/***********
* Helpers *
***********/
-static gpointer expose(GisCallback *callback, gpointer _self)
+static void expose(GisCallback *callback, gpointer _env)
{
- GisPluginEnv *self = GIS_PLUGIN_ENV(_self);
+ GisPluginEnv *env = GIS_PLUGIN_ENV(_env);
g_debug("GisPluginEnv: expose");
gdouble lat, lon, elev;
- gis_viewer_get_location(self->viewer, &lat, &lon, &elev);
+ gis_viewer_get_location(env->viewer, &lat, &lon, &elev);
/* Misc */
gdouble rg = MAX(0, 1-(elev/20000));
for (elev = -EARTH_R; elev < 0; elev += EARTH_R/10) {
glPushMatrix();
glColor4f(0.3, 0.3, 1.0, 0.2);
- gis_viewer_center_position(self->viewer, lat, lon, elev);
+ gis_viewer_center_position(env->viewer, lat, lon, elev);
glBegin(GL_TRIANGLE_FAN);
glVertex3f(0, 0, 0);
glPopMatrix();
}
*/
-
- return NULL;
}
/***********
* Methods *
***********/
+/**
+ * gis_plugin_env_new:
+ * @viewer: the #GisViewer to use for drawing
+ * @prefs: the #GisPrefs for storing configurations
+ *
+ * Create a new instance of the environment plugin.
+ *
+ * Returns: the new #GisPluginEnv
+ */
GisPluginEnv *gis_plugin_env_new(GisViewer *viewer, GisPrefs *prefs)
{
g_debug("GisPluginEnv: new");
- GisPluginEnv *self = g_object_new(GIS_TYPE_PLUGIN_ENV, NULL);
- self->viewer = viewer;
+ GisPluginEnv *env = g_object_new(GIS_TYPE_PLUGIN_ENV, NULL);
+ env->viewer = g_object_ref(viewer);
+
+ /* Create objects */
+ GisCallback *callback = gis_callback_new(expose, env);
+ GisTile *background = gis_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
+ glGenTextures(1, &env->tex);
+ background->data = &env->tex;
/* Add renderers */
- GisCallback *callback = gis_callback_new(expose, self);
- gis_viewer_add(viewer, GIS_OBJECT(callback), GIS_LEVEL_BACKGROUND, 0);
+ gpointer ref1, ref2;
+ ref1 = gis_viewer_add(viewer, GIS_OBJECT(callback), GIS_LEVEL_BACKGROUND, FALSE);
+ ref2 = gis_viewer_add(viewer, GIS_OBJECT(background), GIS_LEVEL_BACKGROUND, FALSE);
+ env->refs = g_list_prepend(env->refs, ref1);
+ env->refs = g_list_prepend(env->refs, ref2);
- return self;
+ return env;
}
/* Add methods to the interface */
}
/* Class/Object init */
-static void gis_plugin_env_init(GisPluginEnv *self)
+static void gis_plugin_env_init(GisPluginEnv *env)
{
g_debug("GisPluginEnv: init");
/* Set defaults */
static void gis_plugin_env_dispose(GObject *gobject)
{
g_debug("GisPluginEnv: dispose");
- GisPluginEnv *self = GIS_PLUGIN_ENV(gobject);
+ GisPluginEnv *env = GIS_PLUGIN_ENV(gobject);
/* Drop references */
+ if (env->viewer) {
+ for (GList *cur = env->refs; cur; cur = cur->next)
+ gis_viewer_remove(env->viewer, cur->data);
+ g_list_free(env->refs);
+ g_object_unref(env->viewer);
+ glDeleteTextures(1, &env->tex);
+ env->viewer = NULL;
+ }
G_OBJECT_CLASS(gis_plugin_env_parent_class)->dispose(gobject);
}
static void gis_plugin_env_class_init(GisPluginEnvClass *klass)
{
g_debug("GisPluginEnv: class_init");
GObjectClass *gobject_class = (GObjectClass*)klass;
- gobject_class->dispose = gis_plugin_env_dispose;
+ gobject_class->dispose = gis_plugin_env_dispose;
}