1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/boolanm.cc	Thu Mar 20 07:03:58 2014 +0200
     1.3 @@ -0,0 +1,129 @@
     1.4 +#include "boolanm.h"
     1.5 +
     1.6 +static long default_get_msec();
     1.7 +
     1.8 +BoolAnim::BoolAnim(bool st)
     1.9 +{
    1.10 +	value = st ? 1.0 : 0.0;
    1.11 +	trans_dir = 0.0;
    1.12 +	trans_start = 0;
    1.13 +	trans_dur = 1000;
    1.14 +	get_msec = default_get_msec;
    1.15 +}
    1.16 +
    1.17 +void BoolAnim::update(long tm) const
    1.18 +{
    1.19 +	if(trans_dir == 0.0) return;
    1.20 +
    1.21 +	float dt = (tm - trans_start) / 1000.0;
    1.22 +	float t = dt / (trans_dur / 1000.0);
    1.23 +
    1.24 +	if(trans_dir > 0.0) {
    1.25 +		value = t;
    1.26 +	} else {
    1.27 +		value = 1.0 - t;
    1.28 +	}
    1.29 +
    1.30 +	if(value < 0.0) {
    1.31 +		value = 0.0;
    1.32 +		trans_dir = 0.0;
    1.33 +	} else if(value > 1.0) {
    1.34 +		value = 1.0;
    1.35 +		trans_dir = 0.0;
    1.36 +	}
    1.37 +}
    1.38 +
    1.39 +void BoolAnim::set_transition_duration(long dur)
    1.40 +{
    1.41 +	trans_dur = dur;
    1.42 +}
    1.43 +
    1.44 +void BoolAnim::set_time_callback(long (*time_func)())
    1.45 +{
    1.46 +	get_msec = time_func;
    1.47 +}
    1.48 +
    1.49 +void BoolAnim::change(bool st)
    1.50 +{
    1.51 +	change(st, get_msec());
    1.52 +}
    1.53 +
    1.54 +void BoolAnim::change(bool st, long tm)
    1.55 +{
    1.56 +	trans_dir = st ? 1.0 : -1.0;
    1.57 +	trans_start = tm;
    1.58 +}
    1.59 +
    1.60 +bool BoolAnim::get_state() const
    1.61 +{
    1.62 +	return get_state(get_msec());
    1.63 +}
    1.64 +
    1.65 +bool BoolAnim::get_state(long tm) const
    1.66 +{
    1.67 +	update(tm);
    1.68 +
    1.69 +	// if we're not in transition use the value (should be 0 or 1)
    1.70 +	if(trans_dir == 0.0) {
    1.71 +		return value > 0.5;
    1.72 +	}
    1.73 +
    1.74 +	// if we're in transition base it on the direction of the transition
    1.75 +	return trans_dir > 0.0;
    1.76 +}
    1.77 +
    1.78 +float BoolAnim::get_value() const
    1.79 +{
    1.80 +	return get_value(get_msec());
    1.81 +}
    1.82 +
    1.83 +float BoolAnim::get_value(long tm) const
    1.84 +{
    1.85 +	update(tm);
    1.86 +	return value;
    1.87 +}
    1.88 +
    1.89 +float BoolAnim::get_dir() const
    1.90 +{
    1.91 +	return get_dir(get_msec());
    1.92 +}
    1.93 +
    1.94 +float BoolAnim::get_dir(long tm) const
    1.95 +{
    1.96 +	update(tm);
    1.97 +	return trans_dir;
    1.98 +}
    1.99 +
   1.100 +BoolAnim::operator bool() const
   1.101 +{
   1.102 +	return get_state();
   1.103 +}
   1.104 +
   1.105 +BoolAnim::operator float() const
   1.106 +{
   1.107 +	return get_value();
   1.108 +}
   1.109 +
   1.110 +#ifdef WIN32
   1.111 +#include <windows.h>
   1.112 +
   1.113 +static long default_get_msec()
   1.114 +{
   1.115 +	return GetTickCount();
   1.116 +}
   1.117 +#else
   1.118 +#include <sys/time.h>
   1.119 +
   1.120 +static long default_get_msec()
   1.121 +{
   1.122 +	static struct timeval tv0;
   1.123 +	struct timeval tv;
   1.124 +
   1.125 +	gettimeofday(&tv, 0);
   1.126 +	if(tv0.tv_sec == 0 && tv0.tv_usec == 0) {
   1.127 +		tv0 = tv;
   1.128 +		return 0;
   1.129 +	}
   1.130 +	return (tv.tv_sec - tv0.tv_sec) * 1000 + (tv.tv_usec - tv0.tv_usec) / 1000;
   1.131 +}
   1.132 +#endif