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2020年6月22日2020年6月22日

Connect the intersections of invisible circles. Draw by openFrameworks

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[ About ]
見えない円の交点をつなげる。

Connect the intersections of invisible circles.

[ 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 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) {};

	float radius;
	vector<pair<glm::vec2, glm::vec2>> particle_list;
	bool calculate_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a);
};

#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 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) {};

float radius;

vector<pair<glm::vec2, glm::vec2>> particle_list;

bool calculate_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a);

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(2);

	this->radius = 50;
	for (auto i = 0; i < 50; i++) {

		auto location = glm::vec2(ofRandom(ofGetWidth()), ofRandom(ofGetHeight()));
		auto direction = glm::vec2(ofRandom(-1.2, 1.2), ofRandom(-1, -3));
		auto particle = make_pair(location, direction);
		this->particle_list.push_back(particle);
	}
}
//--------------------------------------------------------------
void ofApp::update() {

	for (auto& particle : this->particle_list) {

		particle.first += particle.second;

		if (particle.first.y < -this->radius) {

			particle.first = glm::vec2(ofRandom(ofGetWidth()), ofGetHeight() + this->radius);
			particle.second = glm::vec2(ofRandom(-1.2, 1.2), ofRandom(-1, -3));
		}
	}
}

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

	for (auto& particle : this->particle_list) {

		/*
		ofSetColor(39, 32);
		ofDrawCircle(particle.first, this->radius);
		*/

		vector<glm::vec2> vertices;
		for (auto& other : this->particle_list) {

			if (particle == other) { continue; }

			double theta, a;
			if (this->calculate_angle(particle.first, this->radius, other.first, this->radius, theta, a)) {

				vertices.push_back(particle.first + glm::vec2(this->radius * cos(theta + a), this->radius * sin(theta + a)));
				vertices.push_back(particle.first + glm::vec2(this->radius * cos(theta - a), this->radius * sin(theta - a)));
			}
		}

		ofNoFill();
		ofSetColor(39);
		ofBeginShape();
		ofVertices(vertices);
		ofEndShape(true);

		ofFill();
		for (auto& vertex : vertices) {

			ofDrawCircle(vertex, 4);
		}
	}
}

//--------------------------------------------------------------
bool ofApp::calculate_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a) {

	auto distance = glm::distance(location_1, location_2);
	if (distance > radius_1 + radius_2 || distance < radius_1 - radius_2) { return false; }

	theta = atan2(location_2.y - location_1.y, location_2.x - location_1.x);
	auto cos_a = (pow(distance, 2) + pow(radius_1, 2) - pow(radius_2, 2)) / (2 * distance * radius_1);
	a = acos(cos_a);
	return true;
}


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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(2);

this->radius = 50;

for (auto i = 0; i < 50; i++) {

auto location = glm::vec2(ofRandom(ofGetWidth()), ofRandom(ofGetHeight()));

auto direction = glm::vec2(ofRandom(-1.2, 1.2), ofRandom(-1, -3));

auto particle = make_pair(location, direction);

this->particle_list.push_back(particle);

}

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

void ofApp::update() {

for (auto& particle : this->particle_list) {

particle.first += particle.second;

if (particle.first.y < -this->radius) {

particle.first = glm::vec2(ofRandom(ofGetWidth()), ofGetHeight() + this->radius);

particle.second = glm::vec2(ofRandom(-1.2, 1.2), ofRandom(-1, -3));

}

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

void ofApp::draw() {

for (auto& particle : this->particle_list) {

ofSetColor(39, 32);

ofDrawCircle(particle.first, this->radius);

vector<glm::vec2> vertices;

for (auto& other : this->particle_list) {

if (particle == other) { continue; }

double theta, a;

if (this->calculate_angle(particle.first, this->radius, other.first, this->radius, theta, a)) {

vertices.push_back(particle.first + glm::vec2(this->radius * cos(theta + a), this->radius * sin(theta + a)));

vertices.push_back(particle.first + glm::vec2(this->radius * cos(theta - a), this->radius * sin(theta - a)));

}

ofNoFill();

ofSetColor(39);

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

ofFill();

for (auto& vertex : vertices) {

ofDrawCircle(vertex, 4);

}

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

bool ofApp::calculate_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a) {

auto distance = glm::distance(location_1, location_2);

if (distance > radius_1 + radius_2 || distance < radius_1 - radius_2) { return false; }

theta = atan2(location_2.y - location_1.y, location_2.x - location_1.x);

auto cos_a = (pow(distance, 2) + pow(radius_1, 2) - pow(radius_2, 2)) / (2 * distance * radius_1);

a = acos(cos_a);

return true;

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200622

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2020年6月20日

The Disjointed Circle. Draw by openFrameworks

[ Video ]

[ About ]
バラバラな輪。

Disjointed Circle.

[ 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) {};

	void setRingToMesh(ofMesh& mesh, glm::vec3 location, float radius, float width, int deg_start, int deg_end);

	ofMesh mesh;
	float noise_param;
};

#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) {};

void setRingToMesh(ofMesh& mesh, glm::vec3 location, float radius, float width, int deg_start, int deg_end);

ofMesh mesh;

float noise_param;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetColor(39);

	this->noise_param = ofRandom(1000);
}

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

	ofSeedRandom(39);

	this->mesh.clear();

	int width = 20;
	int deg_span = 5;
	for (int x = 90; x < ofGetWidth(); x += 180) {

		for (int y = 90; y < ofGetHeight(); y += 180) {

			for (int deg = 0; deg < 360; deg += deg_span) {

				int radius = ofMap(ofNoise(ofRandom(1000), this->noise_param), 0, 1, 20, 50);

				this->setRingToMesh(this->mesh, glm::vec3(x, y, 0), radius, width, deg, deg + deg_span);
			}
		}
	}

	if (ofGetFrameNum() % 60 < 45) {

		this->noise_param += ofMap(ofGetFrameNum() % 60, 0, 45, 0.1, 0);
	}
}

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

	this->mesh.draw();
}

//--------------------------------------------------------------
void ofApp::setRingToMesh(ofMesh& mesh, glm::vec3 location, float radius, float width, int deg_start, int deg_end) {

	if (deg_start == deg_end) { return; }

	int deg_span = 5;
	for (int deg = deg_start; deg < deg_end; deg += deg_span) {

		auto index = mesh.getNumVertices();

		vector<glm::vec3> vertices;
		vertices.push_back(location + glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), 0));
		vertices.push_back(location + glm::vec3((radius + width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), 0));
		vertices.push_back(location + glm::vec3((radius - width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), 0));
		vertices.push_back(location + glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), 0));

		mesh.addVertices(vertices);

		mesh.addIndex(index + 0); mesh.addIndex(index + 1); mesh.addIndex(index + 2);
		mesh.addIndex(index + 0); mesh.addIndex(index + 2); mesh.addIndex(index + 3);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetColor(39);

this->noise_param = ofRandom(1000);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

int width = 20;

int deg_span = 5;

for (int x = 90; x < ofGetWidth(); x += 180) {

for (int y = 90; y < ofGetHeight(); y += 180) {

for (int deg = 0; deg < 360; deg += deg_span) {

int radius = ofMap(ofNoise(ofRandom(1000), this->noise_param), 0, 1, 20, 50);

this->setRingToMesh(this->mesh, glm::vec3(x, y, 0), radius, width, deg, deg + deg_span);

}

if (ofGetFrameNum() % 60 < 45) {

this->noise_param += ofMap(ofGetFrameNum() % 60, 0, 45, 0.1, 0);

}

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

void ofApp::draw() {

this->mesh.draw();

}

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

void ofApp::setRingToMesh(ofMesh& mesh, glm::vec3 location, float radius, float width, int deg_start, int deg_end) {

if (deg_start == deg_end) { return; }

int deg_span = 5;

for (int deg = deg_start; deg < deg_end; deg += deg_span) {

auto index = mesh.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(location + glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), 0));

vertices.push_back(location + glm::vec3((radius + width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), 0));

vertices.push_back(location + glm::vec3((radius - width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), 0));

vertices.push_back(location + glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), 0));

mesh.addVertices(vertices);

mesh.addIndex(index + 0); mesh.addIndex(index + 1); mesh.addIndex(index + 2);

mesh.addIndex(index + 0); mesh.addIndex(index + 2); mesh.addIndex(index + 3);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200620

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2020年6月19日2020年6月19日

It’s rainy season in Japan. Draw by openFrameworks

[ Video ]

[ About ]
日本は梅雨の時期。

It’s rainy season in Japan.

[ Source ]

#pragma once
#include "ofMain.h"

//--------------------------------------------------------------
class Ripple {

public:
	glm::vec2 location;
	float radius;
};

//--------------------------------------------------------------
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) {};

	vector<Ripple> ripple_list;
};

#pragma once

#include "ofMain.h"

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

class Ripple {

public:

glm::vec2 location;

float radius;

};

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

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) {};

vector<Ripple> ripple_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(2);
	ofNoFill();
}

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

	ofSeedRandom(39);

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

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

			auto noise_location = glm::vec2(
				ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 120, ofGetWidth() - 120),
				ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 120, ofGetHeight() - 120)
			);

			auto ripple = Ripple();
			ripple.location = noise_location;
			ripple.radius = 1;

			this->ripple_list.push_back(ripple);
		}
	}

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

		if (this->ripple_list[i].radius < 70) {

			this->ripple_list[i].radius += 1;
		}
		else {

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

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

	for (auto& ripple : this->ripple_list) {

		if (ripple.radius > 50) {

			ofSetColor(ofMap(ripple.radius, 50, 70, 39, 239));
		}
		else {

			ofSetColor(39);
		}

		ofBeginShape();
		for (int deg = 0; deg < 360; deg += 5) {

			ofVertex(ripple.location + glm::vec2(ripple.radius * cos(deg * DEG_TO_RAD), ripple.radius * sin(deg * DEG_TO_RAD)));
		}
		ofEndShape(true);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(2);

ofNoFill();

}

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

void ofApp::update() {

ofSeedRandom(39);

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

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

auto noise_location = glm::vec2(

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 120, ofGetWidth() - 120),

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 120, ofGetHeight() - 120)

);

auto ripple = Ripple();

ripple.location = noise_location;

ripple.radius = 1;

this->ripple_list.push_back(ripple);

}

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

if (this->ripple_list[i].radius < 70) {

this->ripple_list[i].radius += 1;

}

else {

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

}

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

void ofApp::draw() {

for (auto& ripple : this->ripple_list) {

if (ripple.radius > 50) {

ofSetColor(ofMap(ripple.radius, 50, 70, 39, 239));

}

else {

ofSetColor(39);

}

ofBeginShape();

for (int deg = 0; deg < 360; deg += 5) {

ofVertex(ripple.location + glm::vec2(ripple.radius * cos(deg * DEG_TO_RAD), ripple.radius * sin(deg * DEG_TO_RAD)));

}

ofEndShape(true);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200619

[ほしいものリスト]
Amazon

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