51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
#pragma once
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#include "engine/point.hpp"
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#include "engine/size.hpp"
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namespace devilution {
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struct Rectangle {
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Point position;
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Size size;
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Rectangle() = default;
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constexpr Rectangle(Point position, Size size)
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: position(position)
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, size(size)
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{
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}
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/**
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* @brief Constructs a rectangle centered on the given point and including all tiles within the given radius.
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*
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* The resulting rectangle will be square with an odd size equal to 2*radius + 1.
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*
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* @param center center point of the target rectangle
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* @param radius a non-negative value indicating how many tiles to include around the center
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*/
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explicit constexpr Rectangle(Point center, int radius)
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: position(center - Displacement { radius })
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, size(2 * radius + 1)
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{
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}
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constexpr bool Contains(Point point) const
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{
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return point.x >= this->position.x
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&& point.x < (this->position.x + this->size.width)
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&& point.y >= this->position.y
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&& point.y < (this->position.y + this->size.height);
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}
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/**
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* @brief Computes the center of this rectangle in integer coordinates. Values are truncated towards zero.
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*/
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constexpr Point Center() const
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{
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return position + Displacement(size / 2);
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}
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};
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} // namespace devilution
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