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727b147268
As those functions are not game specific per se, they can be part of base instead. Closes #3334.
28 lines
640 B
C++
28 lines
640 B
C++
#ifndef BASE_BEZIER_H
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#define BASE_BEZIER_H
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// Evaluates the Bernstein polynomial of degree 3/a one-dimensional Bezier curve
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//
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// https://en.wikipedia.org/w/index.php?title=Bernstein_polynomial&oldid=965314973
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//
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// f(t) = (1-t)³ a + 3(1-t)²t b + 3(1-t)t² c + t³ d
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class CCubicBezier
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{
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float a;
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float b;
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float c;
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float d;
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CCubicBezier(float a_, float b_, float c_, float d_) :
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a(a_), b(b_), c(c_), d(d_)
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{
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}
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public:
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CCubicBezier() {}
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float Evaluate(float t) const;
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float Derivative(float t) const;
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static CCubicBezier With(float Start, float StartDerivative, float EndDerivative, float End);
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};
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#endif // BASE_BEZIER_H
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