#define GRITS_SKIP_CENTER (1<<2)
#define GRITS_SKIP_STATE (1<<3)
+/* Picking states */
+typedef struct {
+ guint picked : 1;
+ guint selected : 1;
+} GritsState;
+
typedef struct _GritsObject GritsObject;
typedef struct _GritsObjectClass GritsObjectClass;
gboolean hidden; // If true, the object will not be drawn
gdouble lod; // Level of detail, used to hide small objects
guint32 skip; // Bit mask of safe operations
+
+ GritsState state; // Internal, used for picking
};
struct _GritsObjectClass {
/* Move some of these to GObject? */
void (*draw) (GritsObject *object, GritsOpenGL *opengl);
+ void (*pick) (GritsObject *object, GritsOpenGL *opengl);
void (*hide) (GritsObject *object, gboolean hidden);
};
void grits_object_hide(GritsObject *object, gboolean hidden);
+/* Interal, used by grits_opengl */
+void grits_object_pick_begin(GritsObject *object, GritsOpenGL *opengl);
+void grits_object_pick_pointer(GritsObject *object, double x, double y);
+void grits_object_pick_end(GritsObject *object);
+
/**
* grits_object_queue_draw:
* @object: The #GritsObject that needs drawing