RandomWalk – ページ 74 – プログラミング de 落描き

2020年8月8日

Sunshine. Draw by openFrameworks

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[ About ]
Sunshine.

[ 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) {};

	ofMesh frame;

	vector<vector<glm::vec3>> log_list;
	vector<glm::vec3> direction_list;
	vector<int> param_list;
	vector<ofColor> color_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) {};

ofMesh frame;

vector<vector<glm::vec3>> log_list;

vector<glm::vec3> direction_list;

vector<int> param_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(5);

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

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

	this->frame.clear();

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

		auto direction = 5 * glm::normalize(glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), 0));
		vector<glm::vec3> log;
		ofColor color;
		color.setHsb(ofRandom(255), 255, 230);
		
		log.push_back(direction * 10);
		this->log_list.push_back(log);
		this->direction_list.push_back(direction);
		this->param_list.push_back(512);
		this->color_list.push_back(color);
	}

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

		auto location = this->log_list[i].back() + this->direction_list[i];
		this->log_list[i].push_back(location);
	}

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

		int index = this->frame.getNumVertices();
		this->frame.addVertices(this->log_list[i]);

		this->param_list[i] -= 2;

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

			this->frame.addIndex(k);
			this->frame.addIndex(k + 1);
		}

		ofColor color = this->param_list[i] > 255 ? 
			this->color_list[i] : ofColor(this->color_list[i], ofMap(this->param_list[i], 0, 255, 0, 255));
		for (int k = index; k < this->frame.getNumVertices(); k++) {

			this->frame.addColor(color);
		}
	}

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

		if (this->param_list[i] <= 0) {

			this->log_list.erase(this->log_list.begin() + i);
			this->direction_list.erase(this->direction_list.begin() + i);
			this->param_list.erase(this->param_list.begin() + i);
			this->color_list.erase(this->color_list.begin() + i);
		}
	}
}

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

	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

	this->frame.drawWireframe();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(5);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

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

}

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

void ofApp::update() {

this->frame.clear();

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

auto direction = 5 * glm::normalize(glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), 0));

vector<glm::vec3> log;

ofColor color;

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

log.push_back(direction * 10);

this->log_list.push_back(log);

this->direction_list.push_back(direction);

this->param_list.push_back(512);

this->color_list.push_back(color);

}

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

auto location = this->log_list[i].back() + this->direction_list[i];

this->log_list[i].push_back(location);

}

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

int index = this->frame.getNumVertices();

this->frame.addVertices(this->log_list[i]);

this->param_list[i] -= 2;

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

this->frame.addIndex(k);

this->frame.addIndex(k + 1);

}

ofColor color = this->param_list[i] > 255 ?

this->color_list[i] : ofColor(this->color_list[i], ofMap(this->param_list[i], 0, 255, 0, 255));

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

this->frame.addColor(color);

}

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

if (this->param_list[i] <= 0) {

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

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

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

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

}

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

void ofApp::draw() {

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

this->frame.drawWireframe();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200808

[ほしいものリスト]
Amazon

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2020年8月2日

Fireworks by creative coding. Draw by openFrameworks

[ Video ]

[ About ]
クリエイティブコーディングによる花火。

Fireworks by creative coding.

[ 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) {};

	vector<glm::vec2> location_list;
	vector<float> radius_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) {};

vector<glm::vec2> location_list;

vector<float> radius_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(2);

	ofSeedRandom(2020080202);
	while (this->location_list.size() < 8) {

		auto location = glm::vec2(ofRandom(140, ofGetWidth() - 140), ofRandom(140, ofGetHeight() - 140));
		auto radius = ofRandom(50, 120);

		cout << location << ":" << radius << endl;
		auto flag = true;
		for (int i = 0; i < this->location_list.size(); i++) {

			if (glm::distance(location, this->location_list[i]) < this->radius_list[i] + radius) {

				flag = false;
				break;
			}
		}

		if (flag) {

			this->location_list.push_back(location);
			this->radius_list.push_back(radius);

			cout << this->location_list.size() << endl;
		}
	}

	while (this->location_list.size() < 20) {

		auto location = glm::vec2(ofRandom(100, ofGetWidth() - 100), ofRandom(100, ofGetHeight() - 100));
		auto radius = ofRandom(30, 60);
		auto flag = true;
		for (int i = 0; i < this->location_list.size(); i++) {

			if (glm::distance(location, this->location_list[i]) < this->radius_list[i] + radius) {

				flag = false;
				break;
			}
		}

		if (flag) {

			this->location_list.push_back(location);
			this->radius_list.push_back(radius * 1.2);

			cout << this->location_list.size() << endl;
		}
	}

	while (this->location_list.size() < 36) {

		auto location = glm::vec2(ofRandom(100, ofGetWidth() - 100), ofRandom(100, ofGetHeight() - 100));
		auto radius = ofRandom(10, 20);
		auto flag = true;
		for (int i = 0; i < this->location_list.size(); i++) {

			if (glm::distance(location, this->location_list[i]) < this->radius_list[i] + radius) {

				flag = false;
				break;
			}
		}

		if (flag) {

			this->location_list.push_back(location);
			this->radius_list.push_back(radius * 1.2);

			cout << this->location_list.size() << endl;
		}
	}
}

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

	ofSeedRandom(39);
}

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

	ofColor color;
	vector<ofColor> color_list;
	vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };
	for (auto hex : hex_list) {

		color.setHex(hex);
		color_list.push_back(color);
	}

	auto head_size = 4;
	for (int m = 0; m < this->location_list.size(); m++) {

		ofPushMatrix();
		ofTranslate(this->location_list[m]);

		for (int k = 0; k < 5; k++) {

			ofColor color = color_list[(int)ofRandom(color_list.size())];

			ofMesh mesh;
			vector<glm::vec3> right, left, frame;
			auto noise_seed_deg = ofRandom(1000);
			auto noise_seed_radius = ofRandom(1000);

			glm::vec3 last_location;
			float last_theta;

			for (int i = 0; i < 15; i++) {

				auto noise_deg = ofMap(ofNoise(noise_seed_deg, (ofGetFrameNum() + i) * 0.001), 0, 1, -360, 360);
				auto noise_radius = ofMap(ofNoise(noise_seed_radius, (ofGetFrameNum() + i) * 0.01), 0, 1, this->radius_list[m] * -0.98, this->radius_list[m] * 0.98);
				auto next_noise_deg = ofMap(ofNoise(noise_seed_deg, (ofGetFrameNum() + i + 1) * 0.001), 0, 1, -360, 360);
				auto next_noise_radius = ofMap(ofNoise(noise_seed_radius, (ofGetFrameNum() + i + 1) * 0.01), 0, 1, this->radius_list[m] * -0.98, this->radius_list[m] * 0.98);

				auto location = glm::vec3(noise_radius * cos(noise_deg * DEG_TO_RAD), noise_radius * sin(noise_deg * DEG_TO_RAD), 0);
				auto next = glm::vec3(next_noise_radius * cos(next_noise_deg * DEG_TO_RAD), next_noise_radius * sin(next_noise_deg * DEG_TO_RAD), 0);

				auto direction = next - location;
				auto theta = atan2(direction.y, direction.x);

				right.push_back(location + glm::vec3(ofMap(i, 0, 25, 0, head_size) * cos(theta + PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta + PI * 0.5), 0));
				left.push_back(location + glm::vec3(ofMap(i, 0, 25, 0, head_size) * cos(theta - PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta - PI * 0.5), 0));

				last_location = location;
				last_theta = theta;
			}

			for (int i = 0; i < right.size(); i++) {

				mesh.addVertex(left[i]);
				mesh.addVertex(right[i]);
			}

			for (int i = 0; i < mesh.getNumVertices() - 2; i += 2) {

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

			mesh.addVertex(last_location);
			int index = mesh.getNumVertices();
			for (auto theta = last_theta - PI * 0.5; theta <= last_theta + PI * 0.5; theta += PI / 20) {

				mesh.addVertex(last_location + glm::vec3(head_size * 0.5 * cos(theta), head_size * 0.5 * sin(theta), 0));
				frame.push_back(last_location + glm::vec3(head_size * 0.5 * cos(theta), head_size * 0.5 * sin(theta), 0));
			}

			for (int i = index; i < mesh.getNumVertices() - 1; i++) {

				mesh.addIndex(index); mesh.addIndex(i + 0); mesh.addIndex(i + 1);
			}

			for (int deg = 0; deg < 360; deg += 30) {

				ofRotate(30);

				ofSetColor(color);
				mesh.draw();
			}
		}

		ofPopMatrix();
	}
}

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

ofSetLineWidth(2);

ofSeedRandom(2020080202);

while (this->location_list.size() < 8) {

auto location = glm::vec2(ofRandom(140, ofGetWidth() - 140), ofRandom(140, ofGetHeight() - 140));

auto radius = ofRandom(50, 120);

cout << location << ":" << radius << endl;

auto flag = true;

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

if (glm::distance(location, this->location_list[i]) < this->radius_list[i] + radius) {

flag = false;

break;

}

if (flag) {

this->location_list.push_back(location);

this->radius_list.push_back(radius);

cout << this->location_list.size() << endl;

}

while (this->location_list.size() < 20) {

auto location = glm::vec2(ofRandom(100, ofGetWidth() - 100), ofRandom(100, ofGetHeight() - 100));

auto radius = ofRandom(30, 60);

auto flag = true;

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

if (glm::distance(location, this->location_list[i]) < this->radius_list[i] + radius) {

flag = false;

break;

}

if (flag) {

this->location_list.push_back(location);

this->radius_list.push_back(radius * 1.2);

cout << this->location_list.size() << endl;

}

while (this->location_list.size() < 36) {

auto location = glm::vec2(ofRandom(100, ofGetWidth() - 100), ofRandom(100, ofGetHeight() - 100));

auto radius = ofRandom(10, 20);

auto flag = true;

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

if (glm::distance(location, this->location_list[i]) < this->radius_list[i] + radius) {

flag = false;

break;

}

if (flag) {

this->location_list.push_back(location);

this->radius_list.push_back(radius * 1.2);

cout << this->location_list.size() << endl;

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofColor color;

vector<ofColor> color_list;

vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };

for (auto hex : hex_list) {

color.setHex(hex);

color_list.push_back(color);

}

auto head_size = 4;

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

ofPushMatrix();

ofTranslate(this->location_list[m]);

for (int k = 0; k < 5; k++) {

ofColor color = color_list[(int)ofRandom(color_list.size())];

ofMesh mesh;

vector<glm::vec3> right, left, frame;

auto noise_seed_deg = ofRandom(1000);

auto noise_seed_radius = ofRandom(1000);

glm::vec3 last_location;

float last_theta;

for (int i = 0; i < 15; i++) {

auto noise_deg = ofMap(ofNoise(noise_seed_deg, (ofGetFrameNum() + i) * 0.001), 0, 1, -360, 360);

auto noise_radius = ofMap(ofNoise(noise_seed_radius, (ofGetFrameNum() + i) * 0.01), 0, 1, this->radius_list[m] * -0.98, this->radius_list[m] * 0.98);

auto next_noise_deg = ofMap(ofNoise(noise_seed_deg, (ofGetFrameNum() + i + 1) * 0.001), 0, 1, -360, 360);

auto next_noise_radius = ofMap(ofNoise(noise_seed_radius, (ofGetFrameNum() + i + 1) * 0.01), 0, 1, this->radius_list[m] * -0.98, this->radius_list[m] * 0.98);

auto location = glm::vec3(noise_radius * cos(noise_deg * DEG_TO_RAD), noise_radius * sin(noise_deg * DEG_TO_RAD), 0);

auto next = glm::vec3(next_noise_radius * cos(next_noise_deg * DEG_TO_RAD), next_noise_radius * sin(next_noise_deg * DEG_TO_RAD), 0);

auto direction = next - location;

auto theta = atan2(direction.y, direction.x);

right.push_back(location + glm::vec3(ofMap(i, 0, 25, 0, head_size) * cos(theta + PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta + PI * 0.5), 0));

left.push_back(location + glm::vec3(ofMap(i, 0, 25, 0, head_size) * cos(theta - PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta - PI * 0.5), 0));

last_location = location;

last_theta = theta;

}

for (int i = 0; i < right.size(); i++) {

mesh.addVertex(left[i]);

mesh.addVertex(right[i]);

}

for (int i = 0; i < mesh.getNumVertices() - 2; i += 2) {

mesh.addIndex(i + 0); mesh.addIndex(i + 1); mesh.addIndex(i + 3);

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

}

mesh.addVertex(last_location);

int index = mesh.getNumVertices();

for (auto theta = last_theta - PI * 0.5; theta <= last_theta + PI * 0.5; theta += PI / 20) {

mesh.addVertex(last_location + glm::vec3(head_size * 0.5 * cos(theta), head_size * 0.5 * sin(theta), 0));

frame.push_back(last_location + glm::vec3(head_size * 0.5 * cos(theta), head_size * 0.5 * sin(theta), 0));

}

for (int i = index; i < mesh.getNumVertices() - 1; i++) {

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

}

for (int deg = 0; deg < 360; deg += 30) {

ofRotate(30);

ofSetColor(color);

mesh.draw();

}

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200802

[ほしいものリスト]
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2020年8月1日

Flowers by Random Walk. Draw by openFrameworks

[ Video ]

[ About ]
ランダムウォークによる花。

Flowers by Random Walk.

[ 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) {};

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(2);
}

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

	ofSeedRandom(39);
}

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

	ofColor color;
	vector<ofColor> color_list;
	vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };
	for (auto hex : hex_list) {

		color.setHex(hex);
		color_list.push_back(color);
	}

	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

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

		auto head_size = 8;

		ofMesh mesh;
		vector<glm::vec3> right, left, frame;
		auto noise_seed_deg = ofRandom(1000);
		auto noise_seed_radius = ofRandom(1000);

		glm::vec3 last_location;
		float last_theta;

		for (int i = 0; i < 25; i++) {

			auto noise_deg = ofMap(ofNoise(noise_seed_deg, (ofGetFrameNum() + i) * 0.001), 0, 1, -360, 360);
			auto noise_radius = ofMap(ofNoise(noise_seed_radius, (ofGetFrameNum() + i) * 0.01), 0, 1, -320, 320);
			auto next_noise_deg = ofMap(ofNoise(noise_seed_deg, (ofGetFrameNum() + i + 1) * 0.001), 0, 1, -360, 360);
			auto next_noise_radius = ofMap(ofNoise(noise_seed_radius, (ofGetFrameNum() + i + 1) * 0.01), 0, 1, -320, 320);

			auto location = glm::vec3(noise_radius * cos(noise_deg * DEG_TO_RAD), noise_radius * sin(noise_deg * DEG_TO_RAD), 0);
			auto next = glm::vec3(next_noise_radius * cos(next_noise_deg * DEG_TO_RAD), next_noise_radius * sin(next_noise_deg * DEG_TO_RAD), 0);

			auto direction = next - location;
			auto theta = atan2(direction.y, direction.x);

			right.push_back(location + glm::vec3(ofMap(i, 0, 25, 0, head_size) * cos(theta + PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta + PI * 0.5), 0));
			left.push_back(location + glm::vec3(ofMap(i, 0, 25, 0, head_size) * cos(theta - PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta - PI * 0.5), 0));

			last_location = location;
			last_theta = theta;
		}

		for (int i = 0; i < right.size(); i++) {

			mesh.addVertex(left[i]);
			mesh.addVertex(right[i]);
		}

		for (int i = 0; i < mesh.getNumVertices() - 2; i += 2) {

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

		mesh.addVertex(last_location);
		int index = mesh.getNumVertices();
		for (auto theta = last_theta - PI * 0.5; theta <= last_theta + PI * 0.5; theta += PI / 20) {

			mesh.addVertex(last_location + glm::vec3(head_size * cos(theta), head_size * sin(theta), 0));
			frame.push_back(last_location + glm::vec3(head_size * cos(theta), head_size * sin(theta), 0));
		}

		for (int i = index; i < mesh.getNumVertices() - 1; i++) {

			mesh.addIndex(index); mesh.addIndex(i + 0); mesh.addIndex(i + 1);
		}

		for (int deg = 0; deg < 360; deg += 30) {

			ofRotate(30);

			ofSetColor(39);
			mesh.draw();
		}
	}
}

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

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

100

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102

103

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(2);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofColor color;

vector<ofColor> color_list;

vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };

for (auto hex : hex_list) {

color.setHex(hex);

color_list.push_back(color);

}

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

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

auto head_size = 8;

ofMesh mesh;

vector<glm::vec3> right, left, frame;

auto noise_seed_deg = ofRandom(1000);

auto noise_seed_radius = ofRandom(1000);

glm::vec3 last_location;

float last_theta;

for (int i = 0; i < 25; i++) {

auto noise_deg = ofMap(ofNoise(noise_seed_deg, (ofGetFrameNum() + i) * 0.001), 0, 1, -360, 360);

auto noise_radius = ofMap(ofNoise(noise_seed_radius, (ofGetFrameNum() + i) * 0.01), 0, 1, -320, 320);

auto next_noise_deg = ofMap(ofNoise(noise_seed_deg, (ofGetFrameNum() + i + 1) * 0.001), 0, 1, -360, 360);

auto next_noise_radius = ofMap(ofNoise(noise_seed_radius, (ofGetFrameNum() + i + 1) * 0.01), 0, 1, -320, 320);

auto location = glm::vec3(noise_radius * cos(noise_deg * DEG_TO_RAD), noise_radius * sin(noise_deg * DEG_TO_RAD), 0);

auto next = glm::vec3(next_noise_radius * cos(next_noise_deg * DEG_TO_RAD), next_noise_radius * sin(next_noise_deg * DEG_TO_RAD), 0);

auto direction = next - location;

auto theta = atan2(direction.y, direction.x);

right.push_back(location + glm::vec3(ofMap(i, 0, 25, 0, head_size) * cos(theta + PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta + PI * 0.5), 0));

left.push_back(location + glm::vec3(ofMap(i, 0, 25, 0, head_size) * cos(theta - PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta - PI * 0.5), 0));

last_location = location;

last_theta = theta;

}

for (int i = 0; i < right.size(); i++) {

mesh.addVertex(left[i]);

mesh.addVertex(right[i]);

}

for (int i = 0; i < mesh.getNumVertices() - 2; i += 2) {

mesh.addIndex(i + 0); mesh.addIndex(i + 1); mesh.addIndex(i + 3);

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

}

mesh.addVertex(last_location);

int index = mesh.getNumVertices();

for (auto theta = last_theta - PI * 0.5; theta <= last_theta + PI * 0.5; theta += PI / 20) {

mesh.addVertex(last_location + glm::vec3(head_size * cos(theta), head_size * sin(theta), 0));

frame.push_back(last_location + glm::vec3(head_size * cos(theta), head_size * sin(theta), 0));

}

for (int i = index; i < mesh.getNumVertices() - 1; i++) {

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

}

for (int deg = 0; deg < 360; deg += 30) {

ofRotate(30);

ofSetColor(39);

mesh.draw();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200801

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