float trajectry;
float activeAge = @P.x;
float bias = 0.5;
float toConstant = 4;
float ageStreach = activeAge/toConstant;
if(ageStreach<1){
trajectry = pow(ageStreach,bias)/bias;
} else {
trajectry = ageStreach - (1-1/bias);
}
@P.y = trajectry * toConstant;