shader
st_sineT(
float s = 0
[[
int lockgeom = 0,
string widget = "null",
]],
float t = 0
[[
int lockgeom = 0,
string widget = "null",
]],
float freq = 28,
float amp = 1,
float offset = 0.5,
output float resultF = 0)
{
resultF =(sin ((s - 1/freq) * 6.283185 * freq) + amp) * offset;
}