2 * Copyright (C) 2009-2010 Andy Spencer <andy753421@gmail.com>
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 #ifndef __GRITS_OBJECT_H__
19 #define __GRITS_OBJECT_H__
22 #include <glib-object.h>
23 #include "grits-util.h"
26 #define GRITS_TYPE_OBJECT (grits_object_get_type())
27 #define GRITS_OBJECT(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GRITS_TYPE_OBJECT, GritsObject))
28 #define GRITS_IS_OBJECT(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), GRITS_TYPE_OBJECT))
29 #define GRITS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GRITS_TYPE_OBJECT, GritsObjectClass))
30 #define GRITS_IS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GRITS_TYPE_OBJECT))
31 #define GRITS_OBJECT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GRITS_TYPE_OBJECT, GritsObjectClass))
33 /* Bitmask of things to skip while drawing the object */
34 #define GRITS_SKIP_LOD (1<<0)
35 #define GRITS_SKIP_HORIZON (1<<1)
36 #define GRITS_SKIP_CENTER (1<<2)
37 #define GRITS_SKIP_STATE (1<<3)
45 typedef struct _GritsObject GritsObject;
46 typedef struct _GritsObjectClass GritsObjectClass;
48 #include "grits-opengl.h"
50 GObject parent_instance;
51 GritsViewer *viewer; // The viewer the object was added to
52 gpointer ref; // Reference for objects that have been added
53 GritsPoint center; // Center of the object
54 gboolean hidden; // If true, the object will not be drawn
55 gdouble lod; // Level of detail, used to hide small objects
56 guint32 skip; // Bit mask of safe operations
58 GritsState state; // Internal, used for picking
61 struct _GritsObjectClass {
62 GObjectClass parent_class;
64 /* Move some of these to GObject? */
65 void (*draw) (GritsObject *object, GritsOpenGL *opengl);
66 void (*pick) (GritsObject *object, GritsOpenGL *opengl);
67 void (*hide) (GritsObject *object, gboolean hidden);
70 GType grits_object_get_type(void);
72 /* Implemented by sub-classes */
73 void grits_object_draw(GritsObject *object, GritsOpenGL *opengl);
75 void grits_object_hide(GritsObject *object, gboolean hidden);
77 /* Interal, used by grits_opengl */
78 void grits_object_pick_begin(GritsObject *object, GritsOpenGL *opengl);
79 void grits_object_pick_pointer(GritsObject *object, double x, double y);
80 void grits_object_pick_end(GritsObject *object);
83 * grits_object_queue_draw:
84 * @object: The #GritsObject that needs drawing
86 * Cause the widget to be redrawn on the screen at some later point
88 void grits_object_queue_draw(GritsObject *object);
91 * grits_object_center:
92 * @object: The #GritsObject to get the center of
94 * Get the #GritsPoint representing the center of an object
96 * Returns: the center point
98 #define grits_object_center(object) \
99 (&GRITS_OBJECT(object)->center)