nuclear@2: #include "boolanm.h"
nuclear@2: 
nuclear@2: static long default_get_msec();
nuclear@2: 
nuclear@2: BoolAnim::BoolAnim(bool st)
nuclear@2: {
nuclear@3: 	set(st);
nuclear@2: 	trans_start = 0;
nuclear@3: 	trans_dur = 500;
nuclear@2: 	get_msec = default_get_msec;
nuclear@2: }
nuclear@2: 
nuclear@2: void BoolAnim::update(long tm) const
nuclear@2: {
nuclear@2: 	if(trans_dir == 0.0) return;
nuclear@2: 
nuclear@2: 	float dt = (tm - trans_start) / 1000.0;
nuclear@2: 	float t = dt / (trans_dur / 1000.0);
nuclear@2: 
nuclear@2: 	if(trans_dir > 0.0) {
nuclear@2: 		value = t;
nuclear@2: 	} else {
nuclear@2: 		value = 1.0 - t;
nuclear@2: 	}
nuclear@2: 
nuclear@2: 	if(value < 0.0) {
nuclear@2: 		value = 0.0;
nuclear@2: 		trans_dir = 0.0;
nuclear@2: 	} else if(value > 1.0) {
nuclear@2: 		value = 1.0;
nuclear@2: 		trans_dir = 0.0;
nuclear@2: 	}
nuclear@2: }
nuclear@2: 
nuclear@2: void BoolAnim::set_transition_duration(long dur)
nuclear@2: {
nuclear@2: 	trans_dur = dur;
nuclear@2: }
nuclear@2: 
nuclear@2: void BoolAnim::set_time_callback(long (*time_func)())
nuclear@2: {
nuclear@2: 	get_msec = time_func;
nuclear@2: }
nuclear@2: 
nuclear@3: void BoolAnim::set(bool st)
nuclear@3: {
nuclear@3: 	value = st ? 1.0 : 0.0;
nuclear@3: 	trans_dir = 0.0;
nuclear@3: }
nuclear@3: 
nuclear@2: void BoolAnim::change(bool st)
nuclear@2: {
nuclear@2: 	change(st, get_msec());
nuclear@2: }
nuclear@2: 
nuclear@2: void BoolAnim::change(bool st, long tm)
nuclear@2: {
nuclear@2: 	trans_dir = st ? 1.0 : -1.0;
nuclear@2: 	trans_start = tm;
nuclear@2: }
nuclear@2: 
nuclear@2: bool BoolAnim::get_state() const
nuclear@2: {
nuclear@2: 	return get_state(get_msec());
nuclear@2: }
nuclear@2: 
nuclear@2: bool BoolAnim::get_state(long tm) const
nuclear@2: {
nuclear@2: 	update(tm);
nuclear@2: 
nuclear@2: 	// if we're not in transition use the value (should be 0 or 1)
nuclear@2: 	if(trans_dir == 0.0) {
nuclear@2: 		return value > 0.5;
nuclear@2: 	}
nuclear@2: 
nuclear@2: 	// if we're in transition base it on the direction of the transition
nuclear@2: 	return trans_dir > 0.0;
nuclear@2: }
nuclear@2: 
nuclear@2: float BoolAnim::get_value() const
nuclear@2: {
nuclear@2: 	return get_value(get_msec());
nuclear@2: }
nuclear@2: 
nuclear@2: float BoolAnim::get_value(long tm) const
nuclear@2: {
nuclear@2: 	update(tm);
nuclear@2: 	return value;
nuclear@2: }
nuclear@2: 
nuclear@2: float BoolAnim::get_dir() const
nuclear@2: {
nuclear@2: 	return get_dir(get_msec());
nuclear@2: }
nuclear@2: 
nuclear@2: float BoolAnim::get_dir(long tm) const
nuclear@2: {
nuclear@2: 	update(tm);
nuclear@2: 	return trans_dir;
nuclear@2: }
nuclear@2: 
nuclear@2: BoolAnim::operator bool() const
nuclear@2: {
nuclear@2: 	return get_state();
nuclear@2: }
nuclear@2: 
nuclear@2: BoolAnim::operator float() const
nuclear@2: {
nuclear@2: 	return get_value();
nuclear@2: }
nuclear@2: 
nuclear@2: #ifdef WIN32
nuclear@2: #include <windows.h>
nuclear@2: 
nuclear@2: static long default_get_msec()
nuclear@2: {
nuclear@2: 	return GetTickCount();
nuclear@2: }
nuclear@2: #else
nuclear@2: #include <sys/time.h>
nuclear@2: 
nuclear@2: static long default_get_msec()
nuclear@2: {
nuclear@2: 	static struct timeval tv0;
nuclear@2: 	struct timeval tv;
nuclear@2: 
nuclear@2: 	gettimeofday(&tv, 0);
nuclear@2: 	if(tv0.tv_sec == 0 && tv0.tv_usec == 0) {
nuclear@2: 		tv0 = tv;
nuclear@2: 		return 0;
nuclear@2: 	}
nuclear@2: 	return (tv.tv_sec - tv0.tv_sec) * 1000 + (tv.tv_usec - tv0.tv_usec) / 1000;
nuclear@2: }
nuclear@2: #endif