プログラミング de 落描き – ページ 615 – クリエイティブ・コーディングによる生成物とソース

2020年6月22日2020年6月22日

Connect the intersections of invisible circles. Draw by openFrameworks

[ Video ]

[ 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

2020年6月21日

line * noise. Draw by openFrameworks

[ Video ]

[ About ]
ノイズの値で線を引くかどうかを決める。

The value of noise determines whether 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) {};
};

#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) {};

};

nclude "ofApp.h"

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

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

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

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

	ofSeedRandom(39);
}

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

	int height = 60;
	int y = ofGetHeight() * 0.5;
	
	bool flag = true;
	for (int y = height * 2; y <= ofGetHeight() - height * 2; y += height * 2) {

		int span = (flag = !flag) ? 2 : 5;
		for (int x = 60; x <= ofGetWidth() - 60; x += span) {

			auto noise_value = ofNoise(x * 0.03, y * 0.03, ofGetFrameNum() * 0.05);
			if (noise_value < 0.6) {

				ofDrawLine(x, y - height * 0.5, x, y + height * 0.5);
			}
		}
	}
}

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

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

nclude "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(2);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

int height = 60;

int y = ofGetHeight() * 0.5;

bool flag = true;

for (int y = height * 2; y <= ofGetHeight() - height * 2; y += height * 2) {

int span = (flag = !flag) ? 2 : 5;

for (int x = 60; x <= ofGetWidth() - 60; x += span) {

auto noise_value = ofNoise(x * 0.03, y * 0.03, ofGetFrameNum() * 0.05);

if (noise_value < 0.6) {

ofDrawLine(x, y - height * 0.5, x, y + height * 0.5);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200621

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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