プログラミング de 落描き – ページ 101 – クリエイティブ・コーディングによる生成物とソース

2024年9月26日

Birdcage.

[ Video ]

[ About ]
鳥かご。

[ 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) {};

	ofEasyCam cam;
	ofMesh face, frame;
};

#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) {};

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

	ofSetFrameRate(25);
	ofSetWindowTitle("openFrameworks");

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

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

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

	ofSeedRandom(39);

	this->face.clear();
	this->frame.clear();

	float x_span = 1;
	auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

	for (int x_param = -1; x_param <= 1; x_param += 2) {

		int start_index = this->face.getNumVertices();
		for (float x = 50; x < 150; x += x_span) {

			float next_x = x + x_span;
			int index = this->face.getNumVertices();

			float angle_x = ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + x) * 0.005), 0, 1, -360, 360);
			auto rotation_x = glm::rotate(glm::mat4(), angle_x * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));

			float angle_y = ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + x) * 0.005), 0, 1, -360, 360);
			auto rotation_y = glm::rotate(glm::mat4(), angle_y * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

			float next_angle_x = ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + x + 1) * 0.005), 0, 1, -360, 360);
			auto next_rotation_x = glm::rotate(glm::mat4(), next_angle_x * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));

			float next_angle_y = ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + x + 1) * 0.005), 0, 1, -360, 360);
			auto next_rotation_y = glm::rotate(glm::mat4(), next_angle_y * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

			vector<glm::vec3> vertices;
			vertices.push_back(glm::vec4(x * x_param, 5, 0, 0) * rotation_y * rotation_x);
			vertices.push_back(glm::vec4(next_x * x_param, 5, 0, 0) * next_rotation_y * next_rotation_x);
			vertices.push_back(glm::vec4(next_x * x_param, -5, 0, 0) * next_rotation_y * next_rotation_x);
			vertices.push_back(glm::vec4(x * x_param, -5, 0, 0) * rotation_y * rotation_x);

			this->face.addVertices(vertices);
			this->frame.addVertices(vertices);

			this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 2);
			this->face.addIndex(index + 0); this->face.addIndex(index + 2); this->face.addIndex(index + 3);

			this->frame.addIndex(index + 0); this->frame.addIndex(index + 1);
			this->frame.addIndex(index + 2); this->frame.addIndex(index + 3);
		}

		this->frame.addIndex(start_index + 0); this->frame.addIndex(start_index + 3);
		this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 3);
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.77);

	for (int i = 0; i < 18; i++) {

		ofRotateX(20);

		ofSetColor(39);
		this->face.draw();

		ofSetColor(239, 0, 0);
		this->frame.drawWireframe();
	}

	this->cam.end();

	/*
	int start = 118 + 234;
	if (ofGetFrameNum() > start) {

		ostringstream os;
		os << setw(4) << setfill('0') << ofGetFrameNum() - start;
		ofImage image;
		image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
		image.saveImage("image/cap/img_" + os.str() + ".jpg");
		if (ofGetFrameNum() - start >= 25 * 20) {

			std::exit(1);
		}
	}
	*/
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(2);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

float x_span = 1;

auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

for (int x_param = -1; x_param <= 1; x_param += 2) {

int start_index = this->face.getNumVertices();

for (float x = 50; x < 150; x += x_span) {

float next_x = x + x_span;

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

float angle_x = ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + x) * 0.005), 0, 1, -360, 360);

auto rotation_x = glm::rotate(glm::mat4(), angle_x * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));

float angle_y = ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + x) * 0.005), 0, 1, -360, 360);

auto rotation_y = glm::rotate(glm::mat4(), angle_y * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

float next_angle_x = ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + x + 1) * 0.005), 0, 1, -360, 360);

auto next_rotation_x = glm::rotate(glm::mat4(), next_angle_x * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));

float next_angle_y = ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + x + 1) * 0.005), 0, 1, -360, 360);

auto next_rotation_y = glm::rotate(glm::mat4(), next_angle_y * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

vector<glm::vec3> vertices;

vertices.push_back(glm::vec4(x * x_param, 5, 0, 0) * rotation_y * rotation_x);

vertices.push_back(glm::vec4(next_x * x_param, 5, 0, 0) * next_rotation_y * next_rotation_x);

vertices.push_back(glm::vec4(next_x * x_param, -5, 0, 0) * next_rotation_y * next_rotation_x);

vertices.push_back(glm::vec4(x * x_param, -5, 0, 0) * rotation_y * rotation_x);

this->face.addVertices(vertices);

this->frame.addVertices(vertices);

this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 2);

this->face.addIndex(index + 0); this->face.addIndex(index + 2); this->face.addIndex(index + 3);

this->frame.addIndex(index + 0); this->frame.addIndex(index + 1);

this->frame.addIndex(index + 2); this->frame.addIndex(index + 3);

}

this->frame.addIndex(start_index + 0); this->frame.addIndex(start_index + 3);

this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 3);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.77);

for (int i = 0; i < 18; i++) {

ofRotateX(20);

ofSetColor(39);

this->face.draw();

ofSetColor(239, 0, 0);

this->frame.drawWireframe();

}

this->cam.end();

int start = 118 + 234;

if (ofGetFrameNum() > start) {

ostringstream os;

os << setw(4) << setfill('0') << ofGetFrameNum() - start;

ofImage image;

image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());

image.saveImage("image/cap/img_" + os.str() + ".jpg");

if (ofGetFrameNum() - start >= 25 * 20) {

std::exit(1);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20240926

2024年9月25日

Fire flower.

[ Video ]

[ About ]
ファイアーフラワー。

[ 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::vec3> param_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::vec3> param_list;

};

#include "ofApp.h"

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

	ofSetFrameRate(25);
	ofSetWindowTitle("openframeworks");

	ofBackground(39);
	ofSetColor(0);
	
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);


	for (int i = 0; i < 9; i++) {

		this->param_list.push_back(glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)));
	}
}

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

}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	auto len = 10;
	auto head_size = 3;

	for (int k = 0; k < this->param_list.size(); k++) {

		ofPushMatrix();
		ofTranslate(0, 0);

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

		glm::vec3 last_location;
		float last_theta, last_radius;

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

			auto noise_deg = ofMap(ofNoise(this->param_list[k].x, (ofGetFrameNum() + i) * 0.005), 0, 1, -360, 360);
			auto noise_radius = ofMap(ofNoise(this->param_list[k].y, (ofGetFrameNum() + i) * 0.01), 0, 1, -340, 340);
			auto next_noise_deg = ofMap(ofNoise(this->param_list[k].x, (ofGetFrameNum() + i + 1) * 0.005), 0, 1, -360, 360);
			auto next_noise_radius = ofMap(ofNoise(this->param_list[k].y, (ofGetFrameNum() + i + 1) * 0.01), 0, 1, -340, 340);

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

			last_location = location;
			last_theta = theta;
			last_radius = noise_radius;
		}

		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);
		}

		auto tmp_head_size = ofMap(mesh.getNumVertices() - 2, 0, mesh.getNumVertices(), 0, head_size);

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

		if (abs(last_radius) < 2) { this->param_list[k].z += 0.1; }

		ofColor color;
		int span = ofMap(ofNoise(this->param_list[k].z), 0, 1, 0, 12);
		int deg_span = 360 / span;
		for (int i = 0; i < span; i++) {

			color.setHsb(ofMap(k, 0, this->param_list.size() - 1 , 0, 255), 180, 255);
			ofSetColor(color);

			ofRotate(deg_span);
			mesh.draw();
		}

		ofPopMatrix();
	}

	/*
	int start = 50;
	if (ofGetFrameNum() > start) {

		ostringstream os;
		os << setw(4) << setfill('0') << ofGetFrameNum() - start;
		ofImage image;
		image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
		image.saveImage("image/cap/img_" + os.str() + ".jpg");
		if (ofGetFrameNum() - start >= 25 * 20) {

			std::exit(1);
		}
	}
	*/
}


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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openframeworks");

ofBackground(39);

ofSetColor(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

for (int i = 0; i < 9; i++) {

this->param_list.push_back(glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)));

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

auto len = 10;

auto head_size = 3;

for (int k = 0; k < this->param_list.size(); k++) {

ofPushMatrix();

ofTranslate(0, 0);

ofMesh mesh;

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

glm::vec3 last_location;

float last_theta, last_radius;

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

auto noise_deg = ofMap(ofNoise(this->param_list[k].x, (ofGetFrameNum() + i) * 0.005), 0, 1, -360, 360);

auto noise_radius = ofMap(ofNoise(this->param_list[k].y, (ofGetFrameNum() + i) * 0.01), 0, 1, -340, 340);

auto next_noise_deg = ofMap(ofNoise(this->param_list[k].x, (ofGetFrameNum() + i + 1) * 0.005), 0, 1, -360, 360);

auto next_noise_radius = ofMap(ofNoise(this->param_list[k].y, (ofGetFrameNum() + i + 1) * 0.01), 0, 1, -340, 340);

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, len, 0, head_size) * cos(theta + PI * 0.5), ofMap(i, 0, len, 0, head_size) * sin(theta + PI * 0.5), 0));

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

last_location = location;

last_theta = theta;

last_radius = noise_radius;

}

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);

}

auto tmp_head_size = ofMap(mesh.getNumVertices() - 2, 0, mesh.getNumVertices(), 0, head_size);

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(tmp_head_size * cos(theta), tmp_head_size * sin(theta), 0));

frame.push_back(last_location + glm::vec3(tmp_head_size * cos(theta), tmp_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);

}

if (abs(last_radius) < 2) { this->param_list[k].z += 0.1; }

ofColor color;

int span = ofMap(ofNoise(this->param_list[k].z), 0, 1, 0, 12);

int deg_span = 360 / span;

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

color.setHsb(ofMap(k, 0, this->param_list.size() - 1 , 0, 255), 180, 255);

ofSetColor(color);

ofRotate(deg_span);

mesh.draw();

}

ofPopMatrix();

}

int start = 50;

if (ofGetFrameNum() > start) {

ostringstream os;

os << setw(4) << setfill('0') << ofGetFrameNum() - start;

ofImage image;

image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());

image.saveImage("image/cap/img_" + os.str() + ".jpg");

if (ofGetFrameNum() - start >= 25 * 20) {

std::exit(1);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20240925

2024年9月24日

Gradation circle.

[ Video ]

[ About ]
グラデーション円。

[ 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::vec3> param_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::vec3> param_list;

};

#include "ofApp.h"

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

	ofSetFrameRate(25);
	ofSetWindowTitle("openframeworks");

	ofBackground(255);
	ofSetColor(0);
	ofSetCircleResolution(60);

	for (int i = 0; i < 9; i++) {

		this->param_list.push_back(glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)));
	}
}

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

}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	auto len = 12;
	auto head_size = 5;

	for (int k = 0; k < this->param_list.size(); k++) {

		ofPushMatrix();
		ofTranslate((k % 3) * 220 - 220, (k / 3) * 220 - 220);

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

		glm::vec3 last_location;
		float last_theta, last_radius;

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

			auto noise_deg = ofMap(ofNoise(this->param_list[k].x, (ofGetFrameNum() + i) * 0.0065), 0, 1, -360, 360);
			auto noise_radius = ofMap(ofNoise(this->param_list[k].y, (ofGetFrameNum() + i) * 0.01), 0, 1, -100, 100);
			auto next_noise_deg = ofMap(ofNoise(this->param_list[k].x, (ofGetFrameNum() + i + 1) * 0.0065), 0, 1, -360, 360);
			auto next_noise_radius = ofMap(ofNoise(this->param_list[k].y, (ofGetFrameNum() + i + 1) * 0.01), 0, 1, -100, 100);

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

			last_location = location;
			last_theta = theta;
			last_radius = noise_radius;
		}

		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);
		}

		auto tmp_head_size = ofMap(mesh.getNumVertices() - 2, 0, mesh.getNumVertices(), 0, head_size);

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

		if (abs(last_radius) < 2) { this->param_list[k].z += 0.1; }

		ofColor color;
		int span = ofMap(ofNoise(this->param_list[k].z), 0, 1, 0, 18);
		int deg_span = 360 / span;
		for (int i = 0; i < span; i++) {

			color.setHsb(ofMap(i, 0, span, 0, 255), 200, 255);
			ofSetColor(color);

			ofRotate(deg_span);
			mesh.draw();
		}

		ofPopMatrix();
	}

	/*
	int start = 50;
	if (ofGetFrameNum() > start) {

		ostringstream os;
		os << setw(4) << setfill('0') << ofGetFrameNum() - start;
		ofImage image;
		image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
		image.saveImage("image/cap/img_" + os.str() + ".jpg");
		if (ofGetFrameNum() - start >= 25 * 20) {

			std::exit(1);
		}
	}
	*/
}


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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openframeworks");

ofBackground(255);

ofSetColor(0);

ofSetCircleResolution(60);

for (int i = 0; i < 9; i++) {

this->param_list.push_back(glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)));

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

auto len = 12;

auto head_size = 5;

for (int k = 0; k < this->param_list.size(); k++) {

ofPushMatrix();

ofTranslate((k % 3) * 220 - 220, (k / 3) * 220 - 220);

ofMesh mesh;

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

glm::vec3 last_location;

float last_theta, last_radius;

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

auto noise_deg = ofMap(ofNoise(this->param_list[k].x, (ofGetFrameNum() + i) * 0.0065), 0, 1, -360, 360);

auto noise_radius = ofMap(ofNoise(this->param_list[k].y, (ofGetFrameNum() + i) * 0.01), 0, 1, -100, 100);

auto next_noise_deg = ofMap(ofNoise(this->param_list[k].x, (ofGetFrameNum() + i + 1) * 0.0065), 0, 1, -360, 360);

auto next_noise_radius = ofMap(ofNoise(this->param_list[k].y, (ofGetFrameNum() + i + 1) * 0.01), 0, 1, -100, 100);

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, len, 0, head_size) * cos(theta + PI * 0.5), ofMap(i, 0, len, 0, head_size) * sin(theta + PI * 0.5), 0));

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

last_location = location;

last_theta = theta;

last_radius = noise_radius;

}

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);

}

auto tmp_head_size = ofMap(mesh.getNumVertices() - 2, 0, mesh.getNumVertices(), 0, head_size);

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(tmp_head_size * cos(theta), tmp_head_size * sin(theta), 0));

frame.push_back(last_location + glm::vec3(tmp_head_size * cos(theta), tmp_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);

}

if (abs(last_radius) < 2) { this->param_list[k].z += 0.1; }

ofColor color;

int span = ofMap(ofNoise(this->param_list[k].z), 0, 1, 0, 18);

int deg_span = 360 / span;

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

color.setHsb(ofMap(i, 0, span, 0, 255), 200, 255);

ofSetColor(color);

ofRotate(deg_span);

mesh.draw();

}

ofPopMatrix();

}

int start = 50;

if (ofGetFrameNum() > start) {

ostringstream os;

os << setw(4) << setfill('0') << ofGetFrameNum() - start;

ofImage image;

image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());

image.saveImage("image/cap/img_" + os.str() + ".jpg");

if (ofGetFrameNum() - start >= 25 * 20) {

std::exit(1);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20240924

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