25 lines
754 B
C++
25 lines
754 B
C++
#include "utils/easing.hpp"
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namespace Easing {
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auto linear(float t) -> float { return t; }
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auto outQuad(float t) -> float { return 1.0F - (1.0F - t) * (1.0F - t); }
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auto inQuad(float t) -> float { return t * t; }
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auto inOutQuad(float t) -> float {
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return t < 0.5F ? 2.0F * t * t : 1.0F - (-2.0F * t + 2.0F) * (-2.0F * t + 2.0F) / 2.0F;
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}
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auto outCubic(float t) -> float {
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const float inv = 1.0F - t;
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return 1.0F - inv * inv * inv;
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}
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auto inCubic(float t) -> float { return t * t * t; }
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auto lerp(float a, float b, float t) -> float { return a + (b - a) * t; }
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auto lerpInt(int a, int b, float t) -> int {
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return a + static_cast<int>((b - a) * t);
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}
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} // namespace Easing
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