プログラミング de 落描き – ページ 776 – クリエイティブ・コーディングによる生成物とソース

2019年5月9日2019年5月9日

Double circle. openFrameworks

[ Video ]

[ About ]
二つの円周が重なったら交点を計算して、くり抜いた形状で描写

Double 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 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) {};

	bool compute_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) {};

bool compute_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);
	ofNoFill();
	ofSetLineWidth(5);
	ofSetCircleResolution(72);

}

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

	ofSeedRandom(39);
}

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

	auto location_1 = glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.5);
	auto radius_1 = 280;

	auto location_2 = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 0, ofGetHeight()));
	auto radius_2 = 120;

	auto theta = 0.0;
	auto a = 0.0;
	auto result = this->compute_angle(location_1, radius_1, location_2, radius_2, theta, a);

	if (result) {

		vector<glm::vec2> vertices;
		for (auto rad = theta + a; rad <= theta + 2 * PI - a; rad += PI / 180) {

			vertices.push_back(location_1 + glm::vec2(radius_1 * cos(rad), radius_1 * sin(rad)));
		}

		this->compute_angle(location_2, radius_2, location_1, radius_1, theta, a);
		for (auto rad = theta + a; rad >= theta - a; rad -= PI / 180) {

			vertices.push_back(location_2 + glm::vec2(radius_2 * cos(rad), radius_2 * sin(rad)));
		}
		
		ofFill();
		ofSetColor(239, 39, 39);
		ofBeginShape();
		ofVertices(vertices);
		ofEndShape();

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

	}
	else {

		ofFill();
		ofSetColor(239, 39, 39);
		ofDrawCircle(location_1, radius_1);
		ofNoFill();
		ofSetColor(39);
		ofDrawCircle(location_1, radius_1);
		
		ofFill();
		ofSetColor(239);
		ofDrawCircle(location_2, radius_2);
		ofNoFill();
		ofSetColor(39);
		ofDrawCircle(location_2, radius_2);
	}
}

//--------------------------------------------------------------
bool ofApp::compute_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);

ofNoFill();

ofSetLineWidth(5);

ofSetCircleResolution(72);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

auto location_1 = glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

auto radius_1 = 280;

auto location_2 = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 0, ofGetHeight()));

auto radius_2 = 120;

auto theta = 0.0;

auto a = 0.0;

auto result = this->compute_angle(location_1, radius_1, location_2, radius_2, theta, a);

if (result) {

vector<glm::vec2> vertices;

for (auto rad = theta + a; rad <= theta + 2 * PI - a; rad += PI / 180) {

vertices.push_back(location_1 + glm::vec2(radius_1 * cos(rad), radius_1 * sin(rad)));

}

this->compute_angle(location_2, radius_2, location_1, radius_1, theta, a);

for (auto rad = theta + a; rad >= theta - a; rad -= PI / 180) {

vertices.push_back(location_2 + glm::vec2(radius_2 * cos(rad), radius_2 * sin(rad)));

}

ofFill();

ofSetColor(239, 39, 39);

ofBeginShape();

ofVertices(vertices);

ofEndShape();

ofNoFill();

ofSetColor(39);

ofBeginShape();

ofVertices(vertices);

ofEndShape();

}

else {

ofFill();

ofSetColor(239, 39, 39);

ofDrawCircle(location_1, radius_1);

ofNoFill();

ofSetColor(39);

ofDrawCircle(location_1, radius_1);

ofFill();

ofSetColor(239);

ofDrawCircle(location_2, radius_2);

ofNoFill();

ofSetColor(39);

ofDrawCircle(location_2, radius_2);

}

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

bool ofApp::compute_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/Insta20190509

2019年5月8日2019年5月8日

Pair of quarter torus. openFrameworks

[ Video ]

[ About ]
4分の1のトーラスペア

Pair of quarter torus.

[ 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) {};

	glm::vec3 make_point(float R, float r, float u, float v);

	ofEasyCam cam;
};

#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) {};

glm::vec3 make_point(float R, float r, float u, float v);

ofEasyCam cam;

};

#include "ofApp.h"	

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

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

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

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

}

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

	this->cam.begin();

	auto r = 100;
	auto R = 300;
	for (int i = 0; i < 2; i++) {

		for (auto v = 0; v < 360; v += 10) {

			auto u_start = ofGetFrameNum() + v * 4 + i * 180;
			for (auto u = u_start; u < u_start + 90; u += 20) {

				i == 0 ? ofSetColor(239) : ofSetColor(39);
				ofFill();

				ofBeginShape();
				ofVertex(this->make_point(R, r, u - 9.9, v - 4.9));
				ofVertex(this->make_point(R, r, u + 9.9, v - 4.9));
				ofVertex(this->make_point(R, r, u + 9.9, v + 4.9));
				ofVertex(this->make_point(R, r, u - 9.9, v + 4.9));
				ofEndShape(true);

				i == 0 ? ofSetColor(39) : ofSetColor(239);
				ofNoFill();

				ofBeginShape();
				ofVertex(this->make_point(R, r, u - 10.1, v - 5.1));
				ofVertex(this->make_point(R, r, u + 10.1, v - 5.1));
				ofVertex(this->make_point(R, r, u + 10.1, v + 5.1));
				ofVertex(this->make_point(R, r, u - 10.1, v + 5.1));
				ofEndShape(true);
			}
		}
	}

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

	// 数学デッサン教室 描いて楽しむ数学たち　P.31

	u *= DEG_TO_RAD;
	v *= DEG_TO_RAD;

	auto x = (R + r * cos(u)) * cos(v);
	auto y = (R + r * cos(u)) * sin(v);
	auto z = r * sin(u);

	return glm::vec3(x, y, z);
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(2);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

auto r = 100;

auto R = 300;

for (int i = 0; i < 2; i++) {

for (auto v = 0; v < 360; v += 10) {

auto u_start = ofGetFrameNum() + v * 4 + i * 180;

for (auto u = u_start; u < u_start + 90; u += 20) {

i == 0 ? ofSetColor(239) : ofSetColor(39);

ofFill();

ofBeginShape();

ofVertex(this->make_point(R, r, u - 9.9, v - 4.9));

ofVertex(this->make_point(R, r, u + 9.9, v - 4.9));

ofVertex(this->make_point(R, r, u + 9.9, v + 4.9));

ofVertex(this->make_point(R, r, u - 9.9, v + 4.9));

ofEndShape(true);

i == 0 ? ofSetColor(39) : ofSetColor(239);

ofNoFill();

ofBeginShape();

ofVertex(this->make_point(R, r, u - 10.1, v - 5.1));

ofVertex(this->make_point(R, r, u + 10.1, v - 5.1));

ofVertex(this->make_point(R, r, u + 10.1, v + 5.1));

ofVertex(this->make_point(R, r, u - 10.1, v + 5.1));

ofEndShape(true);

}

this->cam.end();

}

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

glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

// 数学デッサン教室描いて楽しむ数学たち　P.31

u *= DEG_TO_RAD;

v *= DEG_TO_RAD;

auto x = (R + r * cos(u)) * cos(v);

auto y = (R + r * cos(u)) * sin(v);

auto z = r * sin(u);

return glm::vec3(x, y, z);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190508

2019年5月7日2019年5月7日

Recursive circles. openFrameworks

[ Video ]

[ About ]
AlminaさんのTeacupsを拝見して、抑えきれない”回したい欲求”が。

Recursive circles.

Teacups

円の中に円を再帰させてみる
遊園地のコーヒーカップみたいなイメージ

もう一捻り欲しいところ☹️#creativecoding #openframeworks #generative pic.twitter.com/o75f99zXs2

— Almina (@Code4_11) 2019年5月5日

[ 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) {};

	void draw_circle(glm::vec2 location, float radius, ofColor color, int level);
};

#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) {};

void draw_circle(glm::vec2 location, float radius, ofColor color, int level);

};

#include "ofApp.h"	

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

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

	ofBackground(239);
	ofSetLineWidth(2);
	ofNoFill();
	ofSetCircleResolution(60);
}

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

	ofSeedRandom(39);
}

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

	auto span = 240;
	for (auto x = span * 0.5; x < ofGetWidth(); x += span) {

		for (auto y = span * 0.5; y < ofGetHeight(); y += span) {

			ofPushMatrix();
			ofTranslate(x, y);

			ofColor color;
			color.setHsb(ofRandom(255), 200, 255);
			this->draw_circle(glm::vec2(), 100, color, 3);

			ofPopMatrix();
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw_circle(glm::vec2 location, float radius, ofColor color, int level) {

	ofFill();
	ofSetColor(color);
	ofDrawCircle(location, radius);

	ofNoFill();
	ofSetColor(39);
	ofDrawCircle(location, radius);

	if (level > 0) {
		
		auto small_radius = radius / 4;
		auto big_radius = small_radius * 3;

		int deg = ofRandom(360) + ofGetFrameNum() * ofRandom(-3, 3);
		auto small_location = location - glm::vec2(small_radius * 3 * cos(deg * DEG_TO_RAD), small_radius * 3 * sin(deg  * DEG_TO_RAD));
		auto big_location = location + glm::vec2(small_radius * cos(deg * DEG_TO_RAD), small_radius * sin(deg * DEG_TO_RAD));
		
		auto small_color = color;
		small_color.setHsb(((int)color.getHue() + 85) % 255, color.getSaturation(), color.getBrightness());
		auto big_color = color;
		big_color.setHsb(((int)color.getHue() + 170) % 255, color.getSaturation(), color.getBrightness());
		
		this->draw_circle(big_location, big_radius, small_color, level - 1);
		this->draw_circle(small_location, small_radius, big_color, level - 1);
	}
}

//--------------------------------------------------------------
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();

ofSetCircleResolution(60);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

auto span = 240;

for (auto x = span * 0.5; x < ofGetWidth(); x += span) {

for (auto y = span * 0.5; y < ofGetHeight(); y += span) {

ofPushMatrix();

ofTranslate(x, y);

ofColor color;

color.setHsb(ofRandom(255), 200, 255);

this->draw_circle(glm::vec2(), 100, color, 3);

ofPopMatrix();

}

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

void ofApp::draw_circle(glm::vec2 location, float radius, ofColor color, int level) {

ofFill();

ofSetColor(color);

ofDrawCircle(location, radius);

ofNoFill();

ofSetColor(39);

ofDrawCircle(location, radius);

if (level > 0) {

auto small_radius = radius / 4;

auto big_radius = small_radius * 3;

int deg = ofRandom(360) + ofGetFrameNum() * ofRandom(-3, 3);

auto small_location = location - glm::vec2(small_radius * 3 * cos(deg * DEG_TO_RAD), small_radius * 3 * sin(deg * DEG_TO_RAD));

auto big_location = location + glm::vec2(small_radius * cos(deg * DEG_TO_RAD), small_radius * sin(deg * DEG_TO_RAD));

auto small_color = color;

small_color.setHsb(((int)color.getHue() + 85) % 255, color.getSaturation(), color.getBrightness());

auto big_color = color;

big_color.setHsb(((int)color.getHue() + 170) % 255, color.getSaturation(), color.getBrightness());

this->draw_circle(big_location, big_radius, small_color, level - 1);

this->draw_circle(small_location, small_radius, big_color, level - 1);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190507

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