noise – ページ 262 – プログラミング de 落描き

2020年4月17日2020年4月17日

Individuals, not clusters. openFrameworks

[ Video ]

[ About ]
Individuals, not clusters.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

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

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofEasyCam cam;
	ofMesh frame;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofEasyCam cam;

ofMesh frame;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofEnableDepthTest();

	this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

//--------------------------------------------------------------
void ofApp::update() {

	ofSeedRandom(39);

	this->frame.clear();
	int number_of_satellite = 1;
	int number_of_log = 50;
	int base_radius = 80;

	for (int i = 0; i < 30; i++) {

		auto base_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
		auto base_location = glm::vec3(
			ofMap(ofNoise(base_seed.x, (ofGetFrameNum() + number_of_log) * 0.005), 0, 1, -300, 300),
			ofMap(ofNoise(base_seed.y, (ofGetFrameNum() + number_of_log) * 0.005), 0, 1, -300, 300),
			ofMap(ofNoise(base_seed.z, (ofGetFrameNum() + number_of_log) * 0.005), 0, 1, -300, 300));

		for (int i = 0; i < number_of_satellite; i++) {

			float noise_seed_x = ofRandom(1000);
			float noise_seed_y = ofRandom(1000);
			auto location = glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1));
			location = glm::normalize(location) * base_radius * 1.2;

			for (int k = 0; k < number_of_log; k++) {

				auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_y, (ofGetFrameNum() + k) * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(0, 1, 0));
				auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_x, (ofGetFrameNum() + k) * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(1, 0, 0));
				auto tmp_base_location = glm::vec3(
					ofMap(ofNoise(base_seed.x, (ofGetFrameNum() + k) * 0.005), 0, 1, -300, 300),
					ofMap(ofNoise(base_seed.y, (ofGetFrameNum() + k) * 0.005), 0, 1, -300, 300),
					ofMap(ofNoise(base_seed.z, (ofGetFrameNum() + k) * 0.005), 0, 1, -300, 300));
				auto loc = tmp_base_location + glm::vec4(location, 0) * rotation_y * rotation_x;
				this->frame.addVertex(loc);
				this->frame.addColor(ofColor(255, ofMap(k, 0, number_of_log, 25, 255)));
			}
		}
	}

	for (int i = 0; i < this->frame.getNumVertices(); i++) {

		for (int k = i + 1; k < this->frame.getNumVertices(); k++) {

			if (glm::distance(this->frame.getVertex(i), this->frame.getVertex(k)) < 30) {

				this->frame.addIndex(i); this->frame.addIndex(k);
			}
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw() {

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.5);

	this->frame.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableDepthTest();

this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

}

//--------------------------------------------------------------

void ofApp::update() {

ofSeedRandom(39);

this->frame.clear();

int number_of_satellite = 1;

int number_of_log = 50;

int base_radius = 80;

for (int i = 0; i < 30; i++) {

auto base_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

auto base_location = glm::vec3(

ofMap(ofNoise(base_seed.x, (ofGetFrameNum() + number_of_log) * 0.005), 0, 1, -300, 300),

ofMap(ofNoise(base_seed.y, (ofGetFrameNum() + number_of_log) * 0.005), 0, 1, -300, 300),

ofMap(ofNoise(base_seed.z, (ofGetFrameNum() + number_of_log) * 0.005), 0, 1, -300, 300));

for (int i = 0; i < number_of_satellite; i++) {

float noise_seed_x = ofRandom(1000);

float noise_seed_y = ofRandom(1000);

auto location = glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1));

location = glm::normalize(location) * base_radius * 1.2;

for (int k = 0; k < number_of_log; k++) {

auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_y, (ofGetFrameNum() + k) * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(0, 1, 0));

auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_x, (ofGetFrameNum() + k) * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(1, 0, 0));

auto tmp_base_location = glm::vec3(

ofMap(ofNoise(base_seed.x, (ofGetFrameNum() + k) * 0.005), 0, 1, -300, 300),

ofMap(ofNoise(base_seed.y, (ofGetFrameNum() + k) * 0.005), 0, 1, -300, 300),

ofMap(ofNoise(base_seed.z, (ofGetFrameNum() + k) * 0.005), 0, 1, -300, 300));

auto loc = tmp_base_location + glm::vec4(location, 0) * rotation_y * rotation_x;

this->frame.addVertex(loc);

this->frame.addColor(ofColor(255, ofMap(k, 0, number_of_log, 25, 255)));

}

for (int i = 0; i < this->frame.getNumVertices(); i++) {

for (int k = i + 1; k < this->frame.getNumVertices(); k++) {

if (glm::distance(this->frame.getVertex(i), this->frame.getVertex(k)) < 30) {

this->frame.addIndex(i); this->frame.addIndex(k);

}

//--------------------------------------------------------------

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.5);

this->frame.drawWireframe();

this->cam.end();

}

//--------------------------------------------------------------

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200417

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2020年4月16日2020年4月16日

Three clusters of coordinates to draw a line. openFrameworks

[ Video ]

[ About ]
Three clusters of coordinates to draw a line.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

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

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofEasyCam cam;
	ofMesh frame;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofEasyCam cam;

ofMesh frame;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofEnableDepthTest();

	this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

//--------------------------------------------------------------
void ofApp::update() {

	ofSeedRandom(39);

	this->frame.clear();
	int number_of_satellite = 10;
	int number_of_log = 35;
	int base_radius = 80;

	for (int i = 0; i < 3; i++) {

		auto base_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
		auto base_location = glm::vec3(
			ofMap(ofNoise(base_seed.x, (ofGetFrameNum() + number_of_log) * 0.005), 0, 1, -300, 300),
			ofMap(ofNoise(base_seed.y, (ofGetFrameNum() + number_of_log) * 0.005), 0, 1, -300, 300),
			ofMap(ofNoise(base_seed.z, (ofGetFrameNum() + number_of_log) * 0.005), 0, 1, -300, 300));

		for (int i = 0; i < number_of_satellite; i++) {

			float noise_seed_x = ofRandom(1000);
			float noise_seed_y = ofRandom(1000);
			auto location = glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1));
			location = glm::normalize(location) * base_radius * 1.2;

			for (int k = 0; k < number_of_log; k++) {

				auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_y, (ofGetFrameNum() + k) * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(0, 1, 0));
				auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_x, (ofGetFrameNum() + k) * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(1, 0, 0));
				auto tmp_base_location = glm::vec3(
					ofMap(ofNoise(base_seed.x, (ofGetFrameNum() + k) * 0.005), 0, 1, -300, 300),
					ofMap(ofNoise(base_seed.y, (ofGetFrameNum() + k) * 0.005), 0, 1, -300, 300),
					ofMap(ofNoise(base_seed.z, (ofGetFrameNum() + k) * 0.005), 0, 1, -300, 300));
				auto loc = tmp_base_location + glm::vec4(location, 0) * rotation_y * rotation_x;
				this->frame.addVertex(loc);
				this->frame.addColor(ofColor(39, ofMap(k, 0, number_of_log, 25, 255)));
			}
		}
	}

	for (int i = 0; i < this->frame.getNumVertices(); i++) {

		for (int k = i + 1; k < this->frame.getNumVertices(); k++) {

			if (glm::distance(this->frame.getVertex(i), this->frame.getVertex(k)) < 25) {

				this->frame.addIndex(i); this->frame.addIndex(k);
			}
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw() {

	this->cam.begin();

	this->frame.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofEnableDepthTest();

this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

}

//--------------------------------------------------------------

void ofApp::update() {

ofSeedRandom(39);

this->frame.clear();

int number_of_satellite = 10;

int number_of_log = 35;

int base_radius = 80;

for (int i = 0; i < 3; i++) {

auto base_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

auto base_location = glm::vec3(

ofMap(ofNoise(base_seed.x, (ofGetFrameNum() + number_of_log) * 0.005), 0, 1, -300, 300),

ofMap(ofNoise(base_seed.y, (ofGetFrameNum() + number_of_log) * 0.005), 0, 1, -300, 300),

ofMap(ofNoise(base_seed.z, (ofGetFrameNum() + number_of_log) * 0.005), 0, 1, -300, 300));

for (int i = 0; i < number_of_satellite; i++) {

float noise_seed_x = ofRandom(1000);

float noise_seed_y = ofRandom(1000);

auto location = glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1));

location = glm::normalize(location) * base_radius * 1.2;

for (int k = 0; k < number_of_log; k++) {

auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_y, (ofGetFrameNum() + k) * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(0, 1, 0));

auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_x, (ofGetFrameNum() + k) * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(1, 0, 0));

auto tmp_base_location = glm::vec3(

ofMap(ofNoise(base_seed.x, (ofGetFrameNum() + k) * 0.005), 0, 1, -300, 300),

ofMap(ofNoise(base_seed.y, (ofGetFrameNum() + k) * 0.005), 0, 1, -300, 300),

ofMap(ofNoise(base_seed.z, (ofGetFrameNum() + k) * 0.005), 0, 1, -300, 300));

auto loc = tmp_base_location + glm::vec4(location, 0) * rotation_y * rotation_x;

this->frame.addVertex(loc);

this->frame.addColor(ofColor(39, ofMap(k, 0, number_of_log, 25, 255)));

}

for (int i = 0; i < this->frame.getNumVertices(); i++) {

for (int k = i + 1; k < this->frame.getNumVertices(); k++) {

if (glm::distance(this->frame.getVertex(i), this->frame.getVertex(k)) < 25) {

this->frame.addIndex(i); this->frame.addIndex(k);

}

//--------------------------------------------------------------

void ofApp::draw() {

this->cam.begin();

this->frame.drawWireframe();

this->cam.end();

}

//--------------------------------------------------------------

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200416

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Amazon

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2020年4月15日

Physics And Sound 2020. openFrameworks

[ Video ]

[ About ]
The theme for 4/15 of the #dailycodingchallenge was “improvisation”, so I modified a post from the past (8/9/2018).

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxBox2d.h"

#include "Particle.h"
#include "Obstruct.h"

class ofApp : public ofBaseApp {

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

	void keyPressed(int key) {}
	void keyReleased(int key) {}
	void mouseMoved(int x, int y) {}
	void mouseDragged(int x, int y, int button) {}
	void mousePressed(int x, int y, int button) {}
	void mouseReleased(int x, int y, int button) {}
	void mouseEntered(int x, int y) {}
	void mouseExited(int x, int y) {}
	void windowResized(int w, int h) {}
	void dragEvent(ofDragInfo dragInfo) {}
	void gotMessage(ofMessage msg) {}

	void contactStart(ofxBox2dContactArgs &e);
	void contactEnd(ofxBox2dContactArgs &e);

	ofxBox2d box2d;
	vector<unique_ptr<Particle>> particles;
	vector<unique_ptr<Obstruct>> obstructs;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.h"

#include "Particle.h"

#include "Obstruct.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {}

void keyReleased(int key) {}

void mouseMoved(int x, int y) {}

void mouseDragged(int x, int y, int button) {}

void mousePressed(int x, int y, int button) {}

void mouseReleased(int x, int y, int button) {}

void mouseEntered(int x, int y) {}

void mouseExited(int x, int y) {}

void windowResized(int w, int h) {}

void dragEvent(ofDragInfo dragInfo) {}

void gotMessage(ofMessage msg) {}

void contactStart(ofxBox2dContactArgs &e);

void contactEnd(ofxBox2dContactArgs &e);

ofxBox2d box2d;

vector<unique_ptr<Particle>> particles;

vector<unique_ptr<Obstruct>> obstructs;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);

	this->box2d.init();
	this->box2d.enableEvents();
	this->box2d.setGravity(0, 15);
	this->box2d.createBounds();
	this->box2d.setFPS(60);
	this->box2d.registerGrabbing();

	ofAddListener(box2d.contactStartEvents, this, &ofApp::contactStart);
	ofAddListener(box2d.contactEndEvents, this, &ofApp::contactEnd);

	vector<string> sound_path_list = { "sound/pianoC.mp3", "sound/pianoD.mp3", "sound/pianoE.mp3", "sound/pianoF.mp3", "sound/pianoG.mp3", "sound/pianoA.mp3", "sound/pianoB.mp3", "sound/pianoC2.mp3" };

	int number_of_sound = 8;
	for (int i = 0; i < number_of_sound; i++) {

		unique_ptr<Obstruct> ob(new Obstruct(this->box2d, ofPoint(i * 80 + 80, 640), 50, 50, i * 28));
		ob->SetSound(sound_path_list[i]);
		this->obstructs.push_back(std::move(ob));
	}
}

//--------------------------------------------------------------
void ofApp::update() {

	if (ofGetFrameNum() % 10 == 0) {

		ofPoint point(ofRandom(ofGetWidth()) , 30);
		float radius = 8;
		unique_ptr<Particle> p(new Particle(this->box2d, point, radius));

		this->particles.push_back(std::move(p));
	}

	for (int i = this->particles.size() - 1; i >= 0; i--) {

		this->particles[i]->Update();
		if (this->particles[i]->IsDead()) {

			this->particles.erase(this->particles.begin() + i);
		}
	}

	for (int i = 0; i < this->obstructs.size(); i++) {

		this->obstructs[i]->Update();
	}

	this->box2d.update();
	ofSoundUpdate();
}

//--------------------------------------------------------------
void ofApp::draw() {

	for (int i = 0; i < this->obstructs.size(); i++) {

		this->obstructs[i]->Draw();
	}

	for (int i = 0; i < this->particles.size(); i++) {

		this->particles[i]->Draw();
	}
}

//--------------------------------------------------------------
void ofApp::contactStart(ofxBox2dContactArgs &e) {

	if (e.a != NULL && e.b != NULL) {

		if (e.a->GetType() == b2Shape::e_circle && e.b->GetType() == b2Shape::e_circle) {

			Particle* p_a = (Particle*)e.a->GetBody()->GetUserData();
			Particle* p_b = (Particle*)e.b->GetBody()->GetUserData();
			if (p_a != nullptr && p_b != nullptr) {

				// Particle Collide
			}

			return;
		}

		if (e.a->GetType() == b2Shape::e_polygon && e.b->GetType() == b2Shape::e_circle) {

			Obstruct* o_a = (Obstruct*)e.a->GetBody()->GetUserData();
			Particle* p_b = (Particle*)e.b->GetBody()->GetUserData();
			if (o_a != nullptr && p_b != nullptr) {

				p_b->SetColor(o_a->GetColor());
				o_a->SoundPlay();
			}

			return;
		}

		if (e.a->GetType() == b2Shape::e_circle && e.b->GetType() == b2Shape::e_polygon) {

			Particle* p_a = (Particle*)e.a->GetBody()->GetUserData();
			Obstruct* o_b = (Obstruct*)e.b->GetBody()->GetUserData();
			if (p_a != nullptr && o_b != nullptr) {

				p_a->SetColor(o_b->GetColor());
				o_b->SoundPlay();
			}

			return;
		}
	}
}

//--------------------------------------------------------------
void ofApp::contactEnd(ofxBox2dContactArgs &e) {

	if (e.a != NULL && e.b != NULL) {

		// do nothing
	}
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

this->box2d.init();

this->box2d.enableEvents();

this->box2d.setGravity(0, 15);

this->box2d.createBounds();

this->box2d.setFPS(60);

this->box2d.registerGrabbing();

ofAddListener(box2d.contactStartEvents, this, &ofApp::contactStart);

ofAddListener(box2d.contactEndEvents, this, &ofApp::contactEnd);

vector<string> sound_path_list = { "sound/pianoC.mp3", "sound/pianoD.mp3", "sound/pianoE.mp3", "sound/pianoF.mp3", "sound/pianoG.mp3", "sound/pianoA.mp3", "sound/pianoB.mp3", "sound/pianoC2.mp3" };

int number_of_sound = 8;

for (int i = 0; i < number_of_sound; i++) {

unique_ptr<Obstruct> ob(new Obstruct(this->box2d, ofPoint(i * 80 + 80, 640), 50, 50, i * 28));

ob->SetSound(sound_path_list[i]);

this->obstructs.push_back(std::move(ob));

}

//--------------------------------------------------------------

void ofApp::update() {

if (ofGetFrameNum() % 10 == 0) {

ofPoint point(ofRandom(ofGetWidth()) , 30);

float radius = 8;

unique_ptr<Particle> p(new Particle(this->box2d, point, radius));

this->particles.push_back(std::move(p));

}

for (int i = this->particles.size() - 1; i >= 0; i--) {

this->particles[i]->Update();

if (this->particles[i]->IsDead()) {

this->particles.erase(this->particles.begin() + i);

}

for (int i = 0; i < this->obstructs.size(); i++) {

this->obstructs[i]->Update();

}

this->box2d.update();

ofSoundUpdate();

}

//--------------------------------------------------------------

void ofApp::draw() {

for (int i = 0; i < this->obstructs.size(); i++) {

this->obstructs[i]->Draw();

}

for (int i = 0; i < this->particles.size(); i++) {

this->particles[i]->Draw();

}

//--------------------------------------------------------------

void ofApp::contactStart(ofxBox2dContactArgs &e) {

if (e.a != NULL && e.b != NULL) {

if (e.a->GetType() == b2Shape::e_circle && e.b->GetType() == b2Shape::e_circle) {

Particle* p_a = (Particle*)e.a->GetBody()->GetUserData();

Particle* p_b = (Particle*)e.b->GetBody()->GetUserData();

if (p_a != nullptr && p_b != nullptr) {

// Particle Collide

}

return;

}

if (e.a->GetType() == b2Shape::e_polygon && e.b->GetType() == b2Shape::e_circle) {

Obstruct* o_a = (Obstruct*)e.a->GetBody()->GetUserData();

Particle* p_b = (Particle*)e.b->GetBody()->GetUserData();

if (o_a != nullptr && p_b != nullptr) {

p_b->SetColor(o_a->GetColor());

o_a->SoundPlay();

}

return;

}

if (e.a->GetType() == b2Shape::e_circle && e.b->GetType() == b2Shape::e_polygon) {

Particle* p_a = (Particle*)e.a->GetBody()->GetUserData();

Obstruct* o_b = (Obstruct*)e.b->GetBody()->GetUserData();

if (p_a != nullptr && o_b != nullptr) {

p_a->SetColor(o_b->GetColor());

o_b->SoundPlay();

}

return;

}

//--------------------------------------------------------------

void ofApp::contactEnd(ofxBox2dContactArgs &e) {

if (e.a != NULL && e.b != NULL) {

// do nothing

}

//--------------------------------------------------------------

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"
#include "ofxBox2d.h"

class Obstruct
{
public:

	Obstruct(ofxBox2d& box2d, ofPoint point, float width, float height, float fue);
	~Obstruct();

	void Update();
	void Draw();
	void SoundPlay();

	void SetSound(string soude_path);
	ofColor GetColor();
private:

	ofxBox2dRect* rect = nullptr;
	ofColor color;
	ofSoundPlayer sound;
	vector<float> waves;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.h"

class Obstruct

{

public:

Obstruct(ofxBox2d& box2d, ofPoint point, float width, float height, float fue);

~Obstruct();

void Update();

void Draw();

void SoundPlay();

void SetSound(string soude_path);

ofColor GetColor();

private:

ofxBox2dRect* rect = nullptr;

ofColor color;

ofSoundPlayer sound;

vector<float> waves;

};

#include "Obstruct.h"

//--------------------------------------------------------------
Obstruct::Obstruct(ofxBox2d& box2d, ofPoint point, float width, float height, float hue)
{
	this->rect = new ofxBox2dRect();
	this->rect->setPhysics(0.0, 1.0, 1.0);
	this->rect->setup(box2d.getWorld(), point.x, point.y, width, height);
	this->rect->setData(this);

	this->color.setHsb(hue, 255, 230);
}

//--------------------------------------------------------------
Obstruct::~Obstruct()
{
	if (this->rect != nullptr) {

		this->rect->destroy();
		delete this->rect;
	}
}

//--------------------------------------------------------------
void Obstruct::Update() {

	for (int i = this->waves.size() - 1; i >= 0; i -= 1) {

		this->waves[i] += 1;
		if (this->waves[i] > 60) {

			this->waves.erase(this->waves.begin() + i);
		}
	}

	int y = ofMap(ofNoise(this->rect->getPosition().x, ofGetFrameNum() * 0.005), 0, 1, 300, 640);

	this->rect->setPosition(ofPoint(this->rect->getPosition().x, y));	
}

//--------------------------------------------------------------
void Obstruct::Draw() {

	float width = this->rect->getWidth();
	float height = this->rect->getHeight();

	ofFill();
	ofSetColor(this->color);
	ofDrawRectangle(this->rect->getPosition() + ofPoint(width * -0.5, height * -0.5), width, height);

	for (int i = 0; i < this->waves.size(); i++) {

		ofNoFill();
		ofSetColor(this->color, ofMap(this->waves[i], 0, 60, 255, 0));

		float wave_width = width + waves[i];
		float wave_height = height + waves[i];

		ofDrawRectangle(this->rect->getPosition() + ofPoint(wave_width * -0.5, wave_height * -0.5), wave_width, wave_height);
	}
}

//--------------------------------------------------------------
void Obstruct::SoundPlay() {

	this->sound.play();
	this->waves.push_back(0);
}

//--------------------------------------------------------------
void Obstruct::SetSound(string sound_path) {

	this->sound.load(sound_path);
	this->sound.setVolume(0.5);
	this->sound.setMultiPlay(true);
}

//--------------------------------------------------------------
ofColor Obstruct::GetColor() { 
	
	return this->color; 
}

#include "Obstruct.h"

//--------------------------------------------------------------

Obstruct::Obstruct(ofxBox2d& box2d, ofPoint point, float width, float height, float hue)

{

this->rect = new ofxBox2dRect();

this->rect->setPhysics(0.0, 1.0, 1.0);

this->rect->setup(box2d.getWorld(), point.x, point.y, width, height);

this->rect->setData(this);

this->color.setHsb(hue, 255, 230);

}

//--------------------------------------------------------------

Obstruct::~Obstruct()

{

if (this->rect != nullptr) {

this->rect->destroy();

delete this->rect;

}

//--------------------------------------------------------------

void Obstruct::Update() {

for (int i = this->waves.size() - 1; i >= 0; i -= 1) {

this->waves[i] += 1;

if (this->waves[i] > 60) {

this->waves.erase(this->waves.begin() + i);

}

int y = ofMap(ofNoise(this->rect->getPosition().x, ofGetFrameNum() * 0.005), 0, 1, 300, 640);

this->rect->setPosition(ofPoint(this->rect->getPosition().x, y));

}

//--------------------------------------------------------------

void Obstruct::Draw() {

float width = this->rect->getWidth();

float height = this->rect->getHeight();

ofFill();

ofSetColor(this->color);

ofDrawRectangle(this->rect->getPosition() + ofPoint(width * -0.5, height * -0.5), width, height);

for (int i = 0; i < this->waves.size(); i++) {

ofNoFill();

ofSetColor(this->color, ofMap(this->waves[i], 0, 60, 255, 0));

float wave_width = width + waves[i];

float wave_height = height + waves[i];

ofDrawRectangle(this->rect->getPosition() + ofPoint(wave_width * -0.5, wave_height * -0.5), wave_width, wave_height);

}

//--------------------------------------------------------------

void Obstruct::SoundPlay() {

this->sound.play();

this->waves.push_back(0);

}

//--------------------------------------------------------------

void Obstruct::SetSound(string sound_path) {

this->sound.load(sound_path);

this->sound.setVolume(0.5);

this->sound.setMultiPlay(true);

}

//--------------------------------------------------------------

ofColor Obstruct::GetColor() {

return this->color;

}

#pragma once
#include "ofMain.h"
#include "ofxBox2d.h"

class Particle
{
public:

	Particle(ofxBox2d& box2d, ofPoint point, float radius);
	~Particle();

	void Update();
	void Draw();

	void SetColor(ofColor color);
	ofColor GetColor();
	bool IsDead();
private:

	ofxBox2dCircle* circle = nullptr;
	ofColor color;
	float life;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.h"

class Particle

{

public:

Particle(ofxBox2d& box2d, ofPoint point, float radius);

~Particle();

void Update();

void Draw();

void SetColor(ofColor color);

ofColor GetColor();

bool IsDead();

private:

ofxBox2dCircle* circle = nullptr;

ofColor color;

float life;

};

#include "Particle.h"

//--------------------------------------------------------------
Particle::Particle(ofxBox2d& box2d, ofPoint point, float radius)
{
	this->circle = new ofxBox2dCircle();
	this->circle->setPhysics(1.0, 0.3, 1.0);
	this->circle->setup(box2d.getWorld(), point.x, point.y, radius);
	this->circle->setData(this);

	this->color = ofColor(39);
	this->life = 255;
}

//--------------------------------------------------------------
Particle::~Particle()
{
	if (this->circle != nullptr) {

		this->circle->destroy();
		delete this->circle;
	}
}

//--------------------------------------------------------------
void Particle::Update() {

	this->life -= 1.5;
}

//--------------------------------------------------------------
void Particle::Draw() {

	ofFill();
	ofSetColor(this->color, this->life > 64 ? 255 : ofMap(this->life, 0, 64, 0, 255));
	ofDrawCircle(this->circle->getPosition(), this->circle->getRadius());
}


//--------------------------------------------------------------
void Particle::SetColor(ofColor color) { 
	
	this->color = color; 
}

//--------------------------------------------------------------
ofColor Particle::GetColor() { 

	return this->color; 
}

//--------------------------------------------------------------
bool Particle::IsDead() {
	
	return this->life <= 0; 
}

#include "Particle.h"

//--------------------------------------------------------------

Particle::Particle(ofxBox2d& box2d, ofPoint point, float radius)

{

this->circle = new ofxBox2dCircle();

this->circle->setPhysics(1.0, 0.3, 1.0);

this->circle->setup(box2d.getWorld(), point.x, point.y, radius);

this->circle->setData(this);

this->color = ofColor(39);

this->life = 255;

}

//--------------------------------------------------------------

Particle::~Particle()

{

if (this->circle != nullptr) {

this->circle->destroy();

delete this->circle;

}

//--------------------------------------------------------------

void Particle::Update() {

this->life -= 1.5;

}

//--------------------------------------------------------------

void Particle::Draw() {

ofFill();

ofSetColor(this->color, this->life > 64 ? 255 : ofMap(this->life, 0, 64, 0, 255));

ofDrawCircle(this->circle->getPosition(), this->circle->getRadius());

}

//--------------------------------------------------------------

void Particle::SetColor(ofColor color) {

this->color = color;

}

//--------------------------------------------------------------

ofColor Particle::GetColor() {

return this->color;

}

//--------------------------------------------------------------

bool Particle::IsDead() {

return this->life <= 0;

}

[ Link ]
https://github.com/junkiyoshi/Insta20200415

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