86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
#include "misc/Shapes.h"
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#include <algorithm>
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#include <cmath>
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namespace td {
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namespace utils {
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namespace shape {
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float Point::Distance(const Point& point) const {
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return std::sqrt(DistanceSquared(point));
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}
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float Point::DistanceSquared(const Point& point) const {
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return (m_X - point.GetX()) * (m_X - point.GetX()) + (m_Y - point.GetY()) * (m_Y - point.GetY());
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}
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bool Rectangle::CollidesWith(const Point& point) const {
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return point.GetX() > GetTopLeft().GetX() && point.GetX() < GetBottomRight().GetX() &&
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point.GetY() > GetTopLeft().GetY() && point.GetY() < GetBottomRight().GetY();
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}
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bool Rectangle::CollidesWith(const Rectangle& rect) const {
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Point point1{ rect.GetTopLeft().GetX(), rect.GetTopLeft().GetY() };
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Point point2{ rect.GetTopLeft().GetX(), rect.GetBottomRight().GetY() };
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Point point3{ rect.GetBottomRight().GetX(), rect.GetTopLeft().GetY() };
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Point point4{ rect.GetBottomRight().GetX(), rect.GetBottomRight().GetY() };
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if (CollidesWith(point1)) return true;
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if (CollidesWith(point2)) return true;
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if (CollidesWith(point3)) return true;
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if (CollidesWith(point4)) return true;
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return false;
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}
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bool Rectangle::CollidesWith(const Circle& circle) const {
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return circle.CollidesWith(*this);
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}
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float Rectangle::Distance(const Circle& circle) const {
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return circle.Distance(*this);
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}
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float Rectangle::DistanceSquared(const Circle& circle) const {
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return circle.DistanceSquared(*this);
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}
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bool Circle::CollidesWith(const Point& point) const {
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return m_Radius * m_Radius > m_Center.DistanceSquared(point);
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}
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bool Circle::CollidesWith(const Rectangle& rect) const {
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float DistanceSquared_ = DistanceSquared(rect);
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return DistanceSquared_ < m_Radius* m_Radius;
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}
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bool Circle::CollidesWith(const Circle& circle) const {
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return m_Radius + circle.GetRadius() > m_Center.DistanceSquared(circle.GetCenter());
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}
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float Circle::Distance(const Rectangle& rect) const {
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return std::sqrt(DistanceSquared(rect));
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}
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float Circle::DistanceSquared(const Rectangle& rect) const {
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float closestX = std::clamp(m_Center.GetX(), rect.GetTopLeft().GetX(), rect.GetBottomRight().GetX());
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float closestY = std::clamp(m_Center.GetY(), rect.GetTopLeft().GetY(), rect.GetBottomRight().GetY());
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float DistanceX = m_Center.GetX() - closestX;
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float DistanceY = m_Center.GetY() - closestY;
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return (DistanceX * DistanceX) + (DistanceY * DistanceY);
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}
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} // namespace shape
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} // namespace utils
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} // namespace td
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