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Rectangle Fitting
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| #include <iostream> | |
| struct rect_t | |
| { | |
| float top_m; | |
| float left_m; | |
| float bottom_m; | |
| float right_m; | |
| float height() const { return bottom_m - top_m; } | |
| float width() const { return right_m - left_m; } | |
| }; | |
| rect_t operator*(const rect_t& src, float scale) | |
| { | |
| return rect_t{src.top_m * scale, | |
| src.left_m * scale, | |
| src.bottom_m * scale, | |
| src.right_m * scale}; | |
| } | |
| rect_t operator/(const rect_t& src, float scale) | |
| { | |
| return rect_t{src.top_m / scale, | |
| src.left_m / scale, | |
| src.bottom_m / scale, | |
| src.right_m / scale}; | |
| } | |
| std::ostream& operator<<(std::ostream& s, const rect_t& src) | |
| { | |
| return s << "{" | |
| << " t: " << src.top_m | |
| << ", l: " << src.left_m | |
| << ", b: " << src.bottom_m | |
| << ", r: " << src.right_m << ',' | |
| << " h: " << src.height() | |
| << ", w: " << src.width() | |
| << " }"; | |
| } | |
| rect_t scale_to_fit(const rect_t& src, const rect_t& dst) | |
| { | |
| float v_scale(src.height() / dst.height()); | |
| float h_scale(src.width() / dst.width()); | |
| float scale(std::max(v_scale, h_scale)); | |
| rect_t scale_rect(src / scale); | |
| float v_offset((dst.width() - scale_rect.width()) / 2); | |
| float h_offset((dst.height() - scale_rect.height()) / 2); | |
| float new_top(dst.top_m + v_offset); | |
| float new_left(dst.left_m + h_offset); | |
| return rect_t{new_top, | |
| new_left, | |
| new_top + scale_rect.height(), | |
| new_left + scale_rect.width()}; | |
| } | |
| int main(int, char**) | |
| { | |
| std::cout << "Hello, world!\n"; | |
| rect_t dst{0, 0, 65, 120}; | |
| rect_t wide{0, 0, 75, 150}; | |
| rect_t tall{0, 0, 150, 75}; | |
| std::cout << "dst: " << dst << "\n"; | |
| std::cout << "wide: " << wide << "\n"; | |
| std::cout << "tall: " << tall << "\n"; | |
| rect_t wide_fit(scale_to_fit(wide, dst)); | |
| std::cout << "wide_fit: " << wide_fit << "\n"; | |
| rect_t tall_fit(scale_to_fit(tall, dst)); | |
| std::cout << "tall_fit: " << tall_fit << "\n"; | |
| return 0; | |
| } |
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