transformInternal method
- double t
override
Returns the value of the curve at point t
.
The given parametric value t
will be between 0.0 and 1.0, inclusive.
Implementation
@override
double transformInternal(double t) {
double start = 0.0;
double end = 1.0;
while (true) {
final double midpoint = (start + end) / 2;
final double estimate = _evaluateCubic(a, c, midpoint);
if ((t - estimate).abs() < _cubicErrorBound) {
return _evaluateCubic(b, d, midpoint);
}
if (estimate < t) {
start = midpoint;
} else {
end = midpoint;
}
}
}