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common/math_util: Support float type rectangles

master
ReinUsesLisp 2019-12-26 01:42:31 +07:00
parent c7db1ef565
commit e38ed26b98
1 changed files with 14 additions and 2 deletions
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16
src/common/math_util.h
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@ -24,17 +24,29 @@ struct Rectangle {
: left(left), top(top), right(right), bottom(bottom) {}
T GetWidth() const {
return std::abs(static_cast<std::make_signed_t<T>>(right - left));
if constexpr (std::is_floating_point_v<T>) {
return std::abs(right - left);
} else {
return std::abs(static_cast<std::make_signed_t<T>>(right - left));
}
}
T GetHeight() const {
return std::abs(static_cast<std::make_signed_t<T>>(bottom - top));
if constexpr (std::is_floating_point_v<T>) {
return std::abs(bottom - top);
} else {
return std::abs(static_cast<std::make_signed_t<T>>(bottom - top));
}
}
Rectangle<T> TranslateX(const T x) const {
return Rectangle{left + x, top, right + x, bottom};
}
Rectangle<T> TranslateY(const T y) const {
return Rectangle{left, top + y, right, bottom + y};
}
Rectangle<T> Scale(const float s) const {
return Rectangle{left, top, static_cast<T>(left + GetWidth() * s),
static_cast<T>(top + GetHeight() * s)};