Collision Detection Using openFrameworks and ofRectangle

ofApp.cpp

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {
}

//--------------------------------------------------------------
void ofApp::update() {
	a2.update({static_cast<float>(ofGetMouseX()), static_cast<float>(ofGetMouseY())});
}

//--------------------------------------------------------------
void ofApp::draw() {
	a2.draw();
	a1.draw(a2);
}

ofApp.h

#pragma once

#include "ofMain.h"

struct Coordinate {
	float x, y;
};

class Actor {
	ofColor color;

public:
	ofRectangle collision;

	Actor(Coordinate coordinate, float width, float height, ofColor color):
		color{color}, collision{coordinate.x, coordinate.y, width, height} {
	}

	void draw() {
		ofSetColor(color);
		ofDrawRectangle(collision);
	}

	void draw(Actor other) {
		draw();

		if (collision.intersects(other.collision)) {
			ofSetColor(ofColor::white);

			ofDrawRectangle(collision.getIntersection(other.collision));
		}
	}

	void update(Coordinate newCoordinate) {
		collision.setX(newCoordinate.x);
		collision.setY(newCoordinate.y);
	}
};

class ofApp : public ofBaseApp {

public:
	void setup() override;
	void update() override;
	void draw() override;

private:
	Actor a1{{200, 200}, 200, 100, ofColor::blue};
	Actor a2{{400, 400}, 50, 50, ofColor::red};
};