プログラミング de 落描き – ページ 185 – クリエイティブ・コーディングによる生成物とソース

2022年10月30日

Arrow whirlpool. Draw by openFrameworks

[ video ]

[ About ]
矢印の渦巻。

[ 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 draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor fill_color, ofColor no_fill_color);
	
	vector<glm::vec2> noise_seed_list;
	vector<glm::vec2> location_list;
	vector<glm::vec2> velocity_list;
};

#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 draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor fill_color, ofColor no_fill_color);

vector<glm::vec2> noise_seed_list;

vector<glm::vec2> location_list;

vector<glm::vec2> velocity_list;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(1.5);
	
	for (int i = 0; i < 3; i++) {

		this->noise_seed_list.push_back(glm::vec2(ofRandom(1000), ofRandom(1000)));
	}
}

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

	int index = 0;
	auto radius = 120;
	ofColor color;
	for (auto& noise_seed : this->noise_seed_list) {

		auto deg = ofGetFrameNum() * 3 + index * 120;
		auto next_deg = deg + 3;

		auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
		auto next = glm::vec2(radius * cos(next_deg * DEG_TO_RAD), radius * sin(next_deg * DEG_TO_RAD));

		auto distance = location - next;
		distance *= 1;

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

			auto future = location + distance * 8;
			auto random_deg = ofRandom(360);
			future += glm::vec2(15 * cos(random_deg * DEG_TO_RAD), 15 * sin(random_deg * DEG_TO_RAD));
			auto future_distance = future - location;

			color.setHsb(ofRandom(255), 230, 255);

			this->location_list.push_back(location);
			this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance));
		}

		index++;
	}

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

		this->location_list[i] += this->velocity_list[i];
		this->velocity_list[i] *= 1.01;

		if (glm::distance(glm::vec2(), this->location_list[i]) > 1000) {

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

}

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

	ofTranslate(ofGetWindowSize() * 0.5);
	ofRotateY(180);

	int index = 0;
	for (auto& location : this->location_list) {

		ofPushMatrix();
		ofTranslate(location);

		auto size = ofMap(glm::length(location), 120, 360, 5, 46);
		this->draw_arrow(glm::vec2(), this->velocity_list[index], size, ofColor(0), ofColor(255));

		ofPopMatrix();

		index++;
	}

}

//--------------------------------------------------------------
void ofApp::draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor fill_color, ofColor no_fill_color) {

	auto angle = std::atan2(target.y - location.y, target.x - location.x);
	auto distance = glm::distance(target, location);

	ofPushMatrix();
	ofTranslate(target);

	ofSetColor(fill_color);
	ofFill();
	ofBeginShape();
	ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
	ofEndShape();

	ofBeginShape();
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);
	ofEndShape();

	ofSetColor(no_fill_color);
	ofNoFill();
	ofBeginShape();
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
	ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);
	ofEndShape();

	ofBeginShape();
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);
	ofEndShape();

	ofPopMatrix();
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(1.5);

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

this->noise_seed_list.push_back(glm::vec2(ofRandom(1000), ofRandom(1000)));

}

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

void ofApp::update() {

int index = 0;

auto radius = 120;

ofColor color;

for (auto& noise_seed : this->noise_seed_list) {

auto deg = ofGetFrameNum() * 3 + index * 120;

auto next_deg = deg + 3;

auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

auto next = glm::vec2(radius * cos(next_deg * DEG_TO_RAD), radius * sin(next_deg * DEG_TO_RAD));

auto distance = location - next;

distance *= 1;

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

auto future = location + distance * 8;

auto random_deg = ofRandom(360);

future += glm::vec2(15 * cos(random_deg * DEG_TO_RAD), 15 * sin(random_deg * DEG_TO_RAD));

auto future_distance = future - location;

color.setHsb(ofRandom(255), 230, 255);

this->location_list.push_back(location);

this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance));

}

index++;

}

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

this->location_list[i] += this->velocity_list[i];

this->velocity_list[i] *= 1.01;

if (glm::distance(glm::vec2(), this->location_list[i]) > 1000) {

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

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

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

ofRotateY(180);

int index = 0;

for (auto& location : this->location_list) {

ofPushMatrix();

ofTranslate(location);

auto size = ofMap(glm::length(location), 120, 360, 5, 46);

this->draw_arrow(glm::vec2(), this->velocity_list[index], size, ofColor(0), ofColor(255));

ofPopMatrix();

index++;

}

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

void ofApp::draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor fill_color, ofColor no_fill_color) {

auto angle = std::atan2(target.y - location.y, target.x - location.x);

auto distance = glm::distance(target, location);

ofPushMatrix();

ofTranslate(target);

ofSetColor(fill_color);

ofFill();

ofBeginShape();

ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));

ofEndShape();

ofBeginShape();

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);

ofEndShape();

ofSetColor(no_fill_color);

ofNoFill();

ofBeginShape();

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));

ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);

ofEndShape();

ofBeginShape();

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);

ofEndShape();

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20221030

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2022年10月29日2022年10月29日

whirlpool. Draw by openFrameworks

[ Video ]

[ About ]
渦巻。

[ Source ]

#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) {};

	ofMesh mesh;
};

#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) {};

ofMesh mesh;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetColor(255);
	ofSetLineWidth(0.5);

	ofNoFill();
	ofSetCircleResolution(120);

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

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

	ofSeedRandom(39);

	this->mesh.clear();
	int max_radius = 300;

	for (float deg = 0; deg < 360; deg += 0.2) {

		int base = ofRandom(max_radius);
		int speed = ofRandom(2, 10);
		int tmp_deg = deg + ofGetFrameNum() * speed;

		auto radius = max_radius - (base + ofGetFrameNum() * speed) % max_radius;
		auto location_1 = glm::vec3(radius * cos(tmp_deg * DEG_TO_RAD), radius * sin(tmp_deg * DEG_TO_RAD), 0);
		auto color_1 = ofColor(255, radius > max_radius - 50 ? 255 : radius < 50 ? 0 : ofMap(radius, 50, max_radius - 50, 0, 255));

		tmp_deg += speed;
		
		radius = max_radius - (base + (ofGetFrameNum() + 2) * speed) % max_radius;
		auto location_2 = glm::vec3(radius * cos(tmp_deg * DEG_TO_RAD), radius * sin(tmp_deg * DEG_TO_RAD), 0);
		auto color_2 = ofColor(255, radius > max_radius - 50 ? 255 : radius < 50 ? 0 : ofMap(radius, 50, max_radius - 50, 0, 255));

		if (glm::distance(location_1, location_2) < 100) {

			this->mesh.addVertex(location_1);
			this->mesh.addVertex(location_2);

			this->mesh.addColor(color_1);
			this->mesh.addColor(color_2);

			this->mesh.addIndex(this->mesh.getNumVertices() - 1);
			this->mesh.addIndex(this->mesh.getNumVertices() - 2);
		}
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	this->mesh.drawWireframe();

	ofNoFill();
	ofSetColor(255);
	ofDrawCircle(glm::vec2(), 300);
}


//--------------------------------------------------------------
int main() {
	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetColor(255);

ofSetLineWidth(0.5);

ofNoFill();

ofSetCircleResolution(120);

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

int max_radius = 300;

for (float deg = 0; deg < 360; deg += 0.2) {

int base = ofRandom(max_radius);

int speed = ofRandom(2, 10);

int tmp_deg = deg + ofGetFrameNum() * speed;

auto radius = max_radius - (base + ofGetFrameNum() * speed) % max_radius;

auto location_1 = glm::vec3(radius * cos(tmp_deg * DEG_TO_RAD), radius * sin(tmp_deg * DEG_TO_RAD), 0);

auto color_1 = ofColor(255, radius > max_radius - 50 ? 255 : radius < 50 ? 0 : ofMap(radius, 50, max_radius - 50, 0, 255));

tmp_deg += speed;

radius = max_radius - (base + (ofGetFrameNum() + 2) * speed) % max_radius;

auto location_2 = glm::vec3(radius * cos(tmp_deg * DEG_TO_RAD), radius * sin(tmp_deg * DEG_TO_RAD), 0);

auto color_2 = ofColor(255, radius > max_radius - 50 ? 255 : radius < 50 ? 0 : ofMap(radius, 50, max_radius - 50, 0, 255));

if (glm::distance(location_1, location_2) < 100) {

this->mesh.addVertex(location_1);

this->mesh.addVertex(location_2);

this->mesh.addColor(color_1);

this->mesh.addColor(color_2);

this->mesh.addIndex(this->mesh.getNumVertices() - 1);

this->mesh.addIndex(this->mesh.getNumVertices() - 2);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

this->mesh.drawWireframe();

ofNoFill();

ofSetColor(255);

ofDrawCircle(glm::vec2(), 300);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20221029

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2022年10月28日

Cage of random walk. Draw by openFrameworks

[ Video ]

[ About ]
ランダムウォークの籠。

[ 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 draw_arc(vector<glm::vec3> vertices_1, vector<glm::vec3> vertices_2);

	vector<glm::vec3> location_list;
	vector<int> rotate_param_list;
	vector<int> deg_start_list;
	vector<int> deg_end_list;
	vector<bool> flag_list;

	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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

void draw_arc(vector<glm::vec3> vertices_1, vector<glm::vec3> vertices_2);

vector<glm::vec3> location_list;

vector<int> rotate_param_list;

vector<int> deg_start_list;

vector<int> deg_end_list;

vector<bool> flag_list;

ofEasyCam cam;

};

#include "ofApp.h"	

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

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

	ofBackground(0);
	ofEnableDepthTest();
	ofSetLineWidth(2.5);

	int size = 90;
	for (int x = ofGetWidth() * -0.5 + size * 0.5; x <= ofGetWidth() * 0.5 - size * 0.5; x += size) {

		for (int y = ofGetHeight() * -0.5 + size * 0.5; y <= ofGetHeight() * 0.5 - size * 0.5; y += size) {

			this->location_list.push_back(glm::vec3(x, y, 360));

			int rotate_param = ofRandom(4);
			this->rotate_param_list.push_back(rotate_param);

			this->deg_start_list.push_back(0);
			this->deg_end_list.push_back(90);
			this->flag_list.push_back(false);
		}
	}
}

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

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

		if (ofGetFrameNum() % 9 == 0) {

			if (ofRandom(100) < 10) { this->flag_list[i] = true; }
		}

		if (this->flag_list[i]) {

			if (this->deg_end_list[i] < 90) {

				this->deg_end_list[i] += 10;
			}
			else {

				this->deg_start_list[i] += 10;
				if (this->deg_start_list[i] >= 90) {

					this->deg_end_list[i] = 0;
					this->deg_start_list[i] = 0;
					this->rotate_param_list[i] = (this->rotate_param_list[i] + 1) % this->rotate_param_list.size();
				}
			}

			if (this->deg_start_list[i] == 0 && this->deg_end_list[i] == 90) { this->flag_list[i] = false; }
		}
	}
}

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

	this->cam.begin();

	ofRotateY(ofGetFrameNum());
	//ofRotateX(ofGetFrameNum() * 1.2);

	int size = 90;
	int radius = size * 0.5;
	int width = 10;
	for (int i = 0; i < 6; i++) {

		if (i < 4) {
			ofRotateY(90);
		}
		else if (i < 5) {

			ofRotateX(90);
		}
		else if (i < 6) {

			ofRotateX(180);
		}

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

			ofPushMatrix();
			ofTranslate(this->location_list[i].x, this->location_list[i].y);
			ofRotate(90 * this->rotate_param_list[i]);

			vector<glm::vec3> vertices_1, vertices_2;
			for (int deg = this->deg_start_list[i]; deg <= this->deg_end_list[i]; deg += 2) {

				vertices_1.push_back(glm::vec3(size * -0.5 + (radius + width) * cos(deg * DEG_TO_RAD), size * -0.5 + (radius + width) * sin(deg * DEG_TO_RAD), 360));
				vertices_2.push_back(glm::vec3(size * -0.5 + (radius - width) * cos(deg * DEG_TO_RAD), size * -0.5 + (radius - width) * sin(deg * DEG_TO_RAD), 360));
			}

			this->draw_arc(vertices_1, vertices_2);

			vertices_1.clear();
			vertices_2.clear();
			for (int deg = 180 + this->deg_start_list[i]; deg <= 180 + this->deg_end_list[i]; deg += 2) {

				vertices_1.push_back(glm::vec3(size * 0.5 + (radius + width) * cos(deg * DEG_TO_RAD), size * 0.5 + (radius + width) * sin(deg * DEG_TO_RAD), 360));
				vertices_2.push_back(glm::vec3(size * 0.5 + (radius - width) * cos(deg * DEG_TO_RAD), size * 0.5 + (radius - width) * sin(deg * DEG_TO_RAD), 360));
			}

			this->draw_arc(vertices_1, vertices_2);

			ofPopMatrix();
		}
	}

	ofSeedRandom(39);

	ofColor color;
	ofFill();
	for (int i = 0; i < 90; i++) {

		color.setHsb(ofRandom(255), 130, 255);
		ofSetColor(color);

		auto location = glm::vec3(
			ofMap(ofNoise(ofRandom(1000) + ofGetFrameNum() * 0.01), 0, 1, -450, 450),
			ofMap(ofNoise(ofRandom(1000) + ofGetFrameNum() * 0.01), 0, 1, -450, 450),
			ofMap(ofNoise(ofRandom(1000) + ofGetFrameNum() * 0.01), 0, 1, -450, 450));
		ofDrawSphere(location, 30);
	}

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::draw_arc(vector<glm::vec3> vertices_1, vector<glm::vec3> vertices_2) {

	ofFill();
	ofSetColor(0);
	std::reverse(vertices_2.begin(), vertices_2.end());

	ofBeginShape();
	ofVertices(vertices_1);
	ofVertices(vertices_2);
	ofEndShape(true);

	ofNoFill();
	ofSetColor(255);

	ofBeginShape();
	ofVertices(vertices_1);
	ofEndShape(false);

	ofBeginShape();
	ofVertices(vertices_2);
	ofEndShape(false);

	//ofDrawLine(vertices_1[0], vertices_2[vertices_2.size() - 1]);
	//ofDrawLine(vertices_1[vertices_1.size() - 1], vertices_2[0]);
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableDepthTest();

ofSetLineWidth(2.5);

int size = 90;

for (int x = ofGetWidth() * -0.5 + size * 0.5; x <= ofGetWidth() * 0.5 - size * 0.5; x += size) {

for (int y = ofGetHeight() * -0.5 + size * 0.5; y <= ofGetHeight() * 0.5 - size * 0.5; y += size) {

this->location_list.push_back(glm::vec3(x, y, 360));

int rotate_param = ofRandom(4);

this->rotate_param_list.push_back(rotate_param);

this->deg_start_list.push_back(0);

this->deg_end_list.push_back(90);

this->flag_list.push_back(false);

}

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

void ofApp::update() {

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

if (ofGetFrameNum() % 9 == 0) {

if (ofRandom(100) < 10) { this->flag_list[i] = true; }

}

if (this->flag_list[i]) {

if (this->deg_end_list[i] < 90) {

this->deg_end_list[i] += 10;

}

else {

this->deg_start_list[i] += 10;

if (this->deg_start_list[i] >= 90) {

this->deg_end_list[i] = 0;

this->deg_start_list[i] = 0;

this->rotate_param_list[i] = (this->rotate_param_list[i] + 1) % this->rotate_param_list.size();

}

if (this->deg_start_list[i] == 0 && this->deg_end_list[i] == 90) { this->flag_list[i] = false; }

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum());

//ofRotateX(ofGetFrameNum() * 1.2);

int size = 90;

int radius = size * 0.5;

int width = 10;

for (int i = 0; i < 6; i++) {

if (i < 4) {

ofRotateY(90);

}

else if (i < 5) {

ofRotateX(90);

}

else if (i < 6) {

ofRotateX(180);

}

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

ofPushMatrix();

ofTranslate(this->location_list[i].x, this->location_list[i].y);

ofRotate(90 * this->rotate_param_list[i]);

vector<glm::vec3> vertices_1, vertices_2;

for (int deg = this->deg_start_list[i]; deg <= this->deg_end_list[i]; deg += 2) {

vertices_1.push_back(glm::vec3(size * -0.5 + (radius + width) * cos(deg * DEG_TO_RAD), size * -0.5 + (radius + width) * sin(deg * DEG_TO_RAD), 360));

vertices_2.push_back(glm::vec3(size * -0.5 + (radius - width) * cos(deg * DEG_TO_RAD), size * -0.5 + (radius - width) * sin(deg * DEG_TO_RAD), 360));

}

this->draw_arc(vertices_1, vertices_2);

vertices_1.clear();

vertices_2.clear();

for (int deg = 180 + this->deg_start_list[i]; deg <= 180 + this->deg_end_list[i]; deg += 2) {

vertices_1.push_back(glm::vec3(size * 0.5 + (radius + width) * cos(deg * DEG_TO_RAD), size * 0.5 + (radius + width) * sin(deg * DEG_TO_RAD), 360));

vertices_2.push_back(glm::vec3(size * 0.5 + (radius - width) * cos(deg * DEG_TO_RAD), size * 0.5 + (radius - width) * sin(deg * DEG_TO_RAD), 360));

}

this->draw_arc(vertices_1, vertices_2);

ofPopMatrix();

}

ofSeedRandom(39);

ofColor color;

ofFill();

for (int i = 0; i < 90; i++) {

color.setHsb(ofRandom(255), 130, 255);

ofSetColor(color);

auto location = glm::vec3(

ofMap(ofNoise(ofRandom(1000) + ofGetFrameNum() * 0.01), 0, 1, -450, 450),

ofMap(ofNoise(ofRandom(1000) + ofGetFrameNum() * 0.01), 0, 1, -450, 450));

ofDrawSphere(location, 30);

}

this->cam.end();

}

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

void ofApp::draw_arc(vector<glm::vec3> vertices_1, vector<glm::vec3> vertices_2) {

ofFill();

ofSetColor(0);

std::reverse(vertices_2.begin(), vertices_2.end());

ofBeginShape();

ofVertices(vertices_1);

ofVertices(vertices_2);

ofEndShape(true);

ofNoFill();

ofSetColor(255);

ofBeginShape();

ofVertices(vertices_1);

ofEndShape(false);

ofBeginShape();

ofVertices(vertices_2);

ofEndShape(false);

//ofDrawLine(vertices_1[0], vertices_2[vertices_2.size() - 1]);

//ofDrawLine(vertices_1[vertices_1.size() - 1], vertices_2[0]);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20221028

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