RotatedRect.cpp

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/*
   Copyright 2022 Rishi Challa
 
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at
 
       http://www.apache.org/licenses/LICENSE-2.0
 
   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/
 
#include "RotatedRect.hpp"
 
#include <Kale/Math/Rect/Rect.hpp>
#include <Kale/Math/Ray/Ray.hpp>
#include <Kale/Math/Line/Line.hpp>
#include <Kale/Math/Circle/Circle.hpp>
 
#include <stdexcept>
 
using namespace Kale;
 
RotatedRect::RotatedRect() : point1(0, 0), point2(0, 0), point3(0, 0), point4(0, 0) {
    // Empty Body
}
 
RotatedRect::RotatedRect(const Vector2f &point1, const Vector2f &point2, const Vector2f &point3, const Vector2f &point4) :
    point1(point1), point2(point2), point3(point3), point4(point4) {
    // Empty Body
}
 
RotatedRect::RotatedRect(const Vector2f &point1, const Vector2f &point3) : point1(point1), point2(point3.x, point1.y), point3(point3), point4(point1.x, point3.y) {
    // Empty Body
}
 
Vector2f RotatedRect::center() const {
    return (point1 + point3) / 2;
}
 
Rect RotatedRect::getBoundingBox() const {
    return {
        {std::min({point1.x, point2.x, point3.x, point4.x}), std::max({point1.y, point2.y, point3.y, point4.y})},
        {std::max({point1.x, point2.x, point3.x, point4.x}), std::min({point1.y, point2.y, point3.y, point4.y})}
    };
}
 
bool RotatedRect::pointCollision(Vector2f point) const {
    return (point1 - point2).dot(point - point2) > 0.0f &&
        (point3 - point4).dot(point - point4) > 0.0f &&
        (point1 - point4).dot(point - point4) > 0.0f &&
        (point3 - point2).dot(point - point2) > 0.0f;
}
 
bool RotatedRect::rectCollision(RotatedRect rect) const {
    return (point2 - point1).dot(rect.point3 - point1) > 0.0f &&
        (point4 - point1).dot(rect.point3 - point1) > 0.0f &&
        (rect.point2 - rect.point1).dot(point3 - rect.point1) > 0.0f &&
        (rect.point4 - rect.point1).dot(point3 - rect.point1) > 0.0f;
}
 
bool RotatedRect::rectCollision(Rect rect) const {
    return rectCollision(RotatedRect{rect.topLeft, rect.bottomRight});
}
 
bool RotatedRect::circleCollision(Circle circle) const {
    return circle.rectCollision(*this);
}
 
bool RotatedRect::rayCollision(Ray ray) const {
    return ray.rectCollision(*this);
}
 
bool RotatedRect::lineCollision(Line line) const {
    return line.rectCollision(*this);
}