1 files changed, 110 insertions, 0 deletions
diff --git a/SixenseSDK/include/sixense_utils/event_triggers.hpp b/SixenseSDK/include/sixense_utils/event_triggers.hpp
new file mode 100755
index 0000000..53454ef
--- /dev/null
+++ b/SixenseSDK/include/sixense_utils/event_triggers.hpp
@@ -0,0 +1,110 @@
+/*
+ *
+ * SIXENSE CONFIDENTIAL
+ *
+ * Copyright (C) 2011 Sixense Entertainment Inc.
+ * All Rights Reserved
+ *
+ */
+
+#ifndef EVENT_TRIGGERS_HPP
+#define EVENT_TRIGGERS_HPP
+
+#pragma warning(push)
+#pragma warning( disable:4251 )
+
+#include <sixense_math.hpp>
+
+namespace sixenseUtils {
+
+		// Classes for triggering events based on joystick or trigger positions
+
+	// These are classes that call the supplied EventTriggerBase's 'trigger()' events when triggered. They can be 
+	// created and bound to a switch.
+
+	class EventTriggerBase {
+	public:
+		virtual void trigger() const = 0;
+	};
+
+	// Do nothing
+	class NullEventTrigger : public EventTriggerBase {
+	public:
+		virtual void trigger() const {};
+	};
+
+
+
+	// These classes monitor a floating point value, and trigger their events when the value crosses
+	// a threshold, both rising and falling.
+
+	class EventSwitchBase { 
+	public:
+		EventSwitchBase( float thresh, const EventTriggerBase *positive_transition_event, const EventTriggerBase *negative_transition_event ) : _last_state(false), _thresh(thresh), _positive_transition_event(positive_transition_event), _negative_transition_event(negative_transition_event) {}
+		~EventSwitchBase() {
+			delete _positive_transition_event;
+			delete _negative_transition_event;
+		}
+		void test( float val ) {
+			if( val > _thresh  &&  !_last_state ) {
+				if( _positive_transition_event ) {
+					_positive_transition_event->trigger();
+				}
+				_last_state = true;
+			}
+			if( val < _thresh  &&  _last_state ) {
+				if( _negative_transition_event ) {
+					_negative_transition_event->trigger();
+				}
+				_last_state = false;
+			}
+		}
+
+		bool getLastState( void ) {
+			return _last_state;
+		}
+
+	protected:
+		bool _last_state;
+		float _thresh;
+		const EventTriggerBase *_positive_transition_event;
+		const EventTriggerBase *_negative_transition_event;
+
+	private:
+		EventSwitchBase() {}
+	};
+
+	class PlaneCrossEventSwitch : public EventSwitchBase {
+	public:
+		PlaneCrossEventSwitch( sixenseMath::Plane plane, float thresh, const EventTriggerBase *positive_transition_event, const EventTriggerBase *negative_transition_event ) : EventSwitchBase( thresh, positive_transition_event, negative_transition_event ),
+			_plane(plane) {}
+
+		void test( sixenseMath::Vector3 pt ) {
+			EventSwitchBase::test( -1.0f * (float)_plane.whichSide( pt ) );
+		}
+	private:
+		sixenseMath::Plane _plane;
+	};
+
+	class BinaryEventSwitch : public EventSwitchBase {
+	public:
+		BinaryEventSwitch( const EventTriggerBase *positive_transition_event, const EventTriggerBase *negative_transition_event ) : EventSwitchBase( 0.5f, positive_transition_event, negative_transition_event ) {}
+
+		void test( bool val ) {
+			EventSwitchBase::test( val ? 1.0f : 0.0f );
+		}
+	};
+
+	class ValuatorEventSwitch : public EventSwitchBase {
+	public:
+		ValuatorEventSwitch( float thresh, const EventTriggerBase *positive_transition_event, const EventTriggerBase *negative_transition_event ) : EventSwitchBase( thresh, positive_transition_event, negative_transition_event ){}
+		void test( float val ) {
+			EventSwitchBase::test( val );
+		}
+	};
+
+
+}
+#pragma warning(pop)
+
+#endif