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use eina_fp fixed point sincos table to reduce calc overhead. 

SVN revision: 59442
This commit is contained in:
Carsten Haitzler 2011-05-16 10:51:02 +00:00
parent d05399250e
commit b63e9a5689
1 changed files with 17 additions and 5 deletions
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22
legacy/ecore/src/lib/ecore/ecore_anim.c
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@ -214,12 +214,24 @@ ecore_animator_timeline_add(double runtime, Ecore_Timeline_Cb func, const void *
return animator;
}
static double
_pos_map_sin(double in)
{
return eina_f32p32_double_to(eina_f32p32_sin(eina_f32p32_double_from(in)));
}
static double
_pos_map_cos(double in)
{
return eina_f32p32_double_to(eina_f32p32_cos(eina_f32p32_double_from(in)));
}
static double
_pos_map_accel_factor(double pos, double v1)
{
int i, fact = (int)v1;
double p, o1 = pos, o2 = pos, v;
p = 1.0 - sin((M_PI / 2.0) + ((pos * M_PI) / 2.0));
p = 1.0 - _pos_map_sin((M_PI / 2.0) + ((pos * M_PI) / 2.0));
o2 = p;
for (i = 0; i < fact; i++)
{
@ -255,7 +267,7 @@ _pos_map_spring(double pos, int bounces, double decfac)
if (b1 < 0) b1 = 0;
decpos = (double)b1 / (double)b2;
decay = _pos_map_accel_factor(1.0 - decpos, decfac);
return sin((M_PI / 2.0) + (p2 * len)) * decay;
return _pos_map_sin((M_PI / 2.0) + (p2 * len)) * decay;
}
/**
@ -296,13 +308,13 @@ ecore_animator_pos_map(double pos, Ecore_Pos_Map map, double v1, double v2)
case ECORE_POS_MAP_LINEAR:
return pos;
case ECORE_POS_MAP_ACCELERATE:
pos = 1.0 - sin((M_PI / 2.0) + ((pos * M_PI) / 2.0));
pos = 1.0 - _pos_map_sin((M_PI / 2.0) + ((pos * M_PI) / 2.0));
return pos;
case ECORE_POS_MAP_DECELERATE:
pos = sin((pos * M_PI) / 2.0);
pos = _pos_map_sin((pos * M_PI) / 2.0);
return pos;
case ECORE_POS_MAP_SINUSOIDAL:
pos = (1.0 - cos(pos * M_PI)) / 2.0;
pos = (1.0 - _pos_map_cos(pos * M_PI)) / 2.0;
return pos;
case ECORE_POS_MAP_ACCELERATE_FACTOR:
pos = _pos_map_accel_factor(pos, v1);