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LibGfx: Add Rect::interpolated_to function

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This function interpolates the edges between the rectangle and another
rectangle based on a percentage value.
This commit is contained in:
Tom 2023-04-03 21:34:43 -06:00 committed by Linus Groh
parent 9ff1fa1cf3
commit 035b0f9df6
Notes: sideshowbarker 2024-07-16 23:23:26 +09:00 
Author: https://github.com/tomuta
Commit: https://github.com/SerenityOS/serenity/commit/035b0f9df6
Pull-request: https://github.com/SerenityOS/serenity/pull/18175
Reviewed-by: https://github.com/gmta
Reviewed-by: https://github.com/nico ✅
Reviewed-by: https://github.com/trflynn89
1 changed files with 18 additions and 0 deletions
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18
Userland/Libraries/LibGfx/Rect.h
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@ -557,6 +557,24 @@ public:
return points;
}
template<typename U = T>
[[nodiscard]] Gfx::Rect<U> interpolated_to(Gfx::Rect<T> const& to, float factor) const
{
VERIFY(factor >= 0.0f);
VERIFY(factor <= 1.0f);
if (factor == 0.0f)
return *this;
if (factor == 1.0f)
return to;
if (this == &to)
return *this;
auto interpolated_left = round_to<U>(mix<float>(x(), to.x(), factor));
auto interpolated_top = round_to<U>(mix<float>(y(), to.y(), factor));
auto interpolated_right = round_to<U>(mix<float>(right(), to.right(), factor));
auto interpolated_bottom = round_to<U>(mix<float>(bottom(), to.bottom(), factor));
return { interpolated_left, interpolated_top, interpolated_right - interpolated_left + 1, interpolated_bottom - interpolated_top + 1 };
}
[[nodiscard]] float center_point_distance_to(Rect<T> const& other) const
{
return Line { center(), other.center() }.length();