mirror of
https://github.com/ddnet/ddnet.git
synced 2024-09-21 01:54:19 +00:00
3be8a592e5
Purely automatic change. In case of conflict with this change, apply the other change and rerun the formatting to restore it: $ python scripts/fix_style.py
19 lines
626 B
C++
19 lines
626 B
C++
#include "bezier.h"
|
|
|
|
CCubicBezier CCubicBezier::With(float Start, float StartDerivative, float EndDerivative, float End)
|
|
{
|
|
return CCubicBezier(Start, Start + StartDerivative / 3, End - EndDerivative / 3, End);
|
|
}
|
|
|
|
// f(t) = (1-t)³ a + 3(1-t)²t b + 3(1-t)t² c + t³ d
|
|
float CCubicBezier::Evaluate(float t) const
|
|
{
|
|
return (1 - t) * (1 - t) * (1 - t) * a + 3 * (1 - t) * (1 - t) * t * b + 3 * (1 - t) * t * t * c + t * t * t * d;
|
|
}
|
|
|
|
// f(t) = 3(1-t)²(b-a) + 6(1-t)t(c-b) + 3t²(d-c)
|
|
float CCubicBezier::Derivative(float t) const
|
|
{
|
|
return 3 * (1 - t) * (1 - t) * (b - a) + 6 * (1 - t) * t * (c - b) + 3 * t * t * (d - c);
|
|
}
|