ofMesh – ページ 15 – プログラミング de 落描き

2023年4月26日

Translucent ribbon. Draw by openFrameworks

[ Video ]

[ About ]
半透明リボン。

[ 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;

	glm::vec3 target_location, camera_location;
};

#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;

glm::vec3 target_location, camera_location;

};

#include "ofApp.h"

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

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

	ofBackground(39);
	ofSetLineWidth(3);
	ofEnableDepthTest();
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

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

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

	ofSeedRandom(39);

	int len = 25;

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

	frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

	auto base_noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
	this->camera_location = glm::vec3(
		ofMap(ofNoise(base_noise_seed.x, (ofGetFrameNum()) * 0.005), 0, 1, -500, 500),
		ofMap(ofNoise(base_noise_seed.y, (ofGetFrameNum()) * 0.005), 0, 1, -500, 500),
		ofMap(ofNoise(base_noise_seed.z, (ofGetFrameNum()) * 0.005), 0, 1, -500, 500));

	this->target_location = glm::vec3(
		ofMap(ofNoise(base_noise_seed.x, (ofGetFrameNum() + len) * 0.005), 0, 1, -500, 500),
		ofMap(ofNoise(base_noise_seed.y, (ofGetFrameNum() + len) * 0.005), 0, 1, -500, 500),
		ofMap(ofNoise(base_noise_seed.z, (ofGetFrameNum() + len) * 0.005), 0, 1, -500, 500));

	for (int k = 0; k < 36; k++) {

		auto param = glm::vec3(3, 0, 0);
		auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
		auto start_index = this->face.getNumVertices();

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

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

			auto base_location = glm::vec3(
				ofMap(ofNoise(base_noise_seed.x, (i + ofGetFrameNum()) * 0.005), 0, 1, -500, 500),
				ofMap(ofNoise(base_noise_seed.y, (i + ofGetFrameNum()) * 0.005), 0, 1, -500, 500),
				ofMap(ofNoise(base_noise_seed.z, (i + ofGetFrameNum()) * 0.005), 0, 1, -500, 500));

			auto location = glm::vec3(
				ofMap(ofNoise(noise_seed.x, (i + ofGetFrameNum()) * 0.01), 0, 1, -50, 50),
				ofMap(ofNoise(noise_seed.y, (i + ofGetFrameNum()) * 0.01), 0, 1, -50, 50),
				ofMap(ofNoise(noise_seed.z, (i + ofGetFrameNum()) * 0.01), 0, 1, -50, 50));

			location += base_location;

			this->face.addVertex(location + param);
			this->face.addVertex(location - param);

			color.setHsb(ofMap(k, 0, 36, 0, 255), 255, 255);

			this->face.addColor(ofColor(color, 128));
			this->face.addColor(ofColor(color, 128));

			this->frame.addVertex(location + param);
			this->frame.addVertex(location - param);

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

			if (i > 0) {

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

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

		this->frame.addIndex(start_index + 0); this->frame.addIndex(start_index + 1);
		this->frame.addIndex(frame.getNumVertices() - 1); this->frame.addIndex(frame.getNumVertices() - 2);
	}
}

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

	auto camera_location = this->camera_location + glm::vec3(0, 0, 100);

	this->cam.setPosition(camera_location);
	this->cam.setTarget(target_location);
	this->cam.lookAt(target_location);

	this->cam.begin();

	this->face.drawFaces();
	this->frame.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
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(39);

ofSetLineWidth(3);

ofEnableDepthTest();

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

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

}

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

void ofApp::update() {

ofSeedRandom(39);

int len = 25;

this->face.clear();

this->frame.clear();

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

auto base_noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

this->camera_location = glm::vec3(

ofMap(ofNoise(base_noise_seed.x, (ofGetFrameNum()) * 0.005), 0, 1, -500, 500),

ofMap(ofNoise(base_noise_seed.y, (ofGetFrameNum()) * 0.005), 0, 1, -500, 500),

ofMap(ofNoise(base_noise_seed.z, (ofGetFrameNum()) * 0.005), 0, 1, -500, 500));

this->target_location = glm::vec3(

ofMap(ofNoise(base_noise_seed.x, (ofGetFrameNum() + len) * 0.005), 0, 1, -500, 500),

ofMap(ofNoise(base_noise_seed.y, (ofGetFrameNum() + len) * 0.005), 0, 1, -500, 500),

ofMap(ofNoise(base_noise_seed.z, (ofGetFrameNum() + len) * 0.005), 0, 1, -500, 500));

for (int k = 0; k < 36; k++) {

auto param = glm::vec3(3, 0, 0);

auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

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

ofColor color;

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

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

auto base_location = glm::vec3(

ofMap(ofNoise(base_noise_seed.x, (i + ofGetFrameNum()) * 0.005), 0, 1, -500, 500),

ofMap(ofNoise(base_noise_seed.y, (i + ofGetFrameNum()) * 0.005), 0, 1, -500, 500),

ofMap(ofNoise(base_noise_seed.z, (i + ofGetFrameNum()) * 0.005), 0, 1, -500, 500));

auto location = glm::vec3(

ofMap(ofNoise(noise_seed.x, (i + ofGetFrameNum()) * 0.01), 0, 1, -50, 50),

ofMap(ofNoise(noise_seed.y, (i + ofGetFrameNum()) * 0.01), 0, 1, -50, 50),

ofMap(ofNoise(noise_seed.z, (i + ofGetFrameNum()) * 0.01), 0, 1, -50, 50));

location += base_location;

this->face.addVertex(location + param);

this->face.addVertex(location - param);

color.setHsb(ofMap(k, 0, 36, 0, 255), 255, 255);

this->face.addColor(ofColor(color, 128));

this->frame.addVertex(location + param);

this->frame.addVertex(location - param);

this->frame.addColor(color);

if (i > 0) {

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

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

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

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

}

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

this->frame.addIndex(frame.getNumVertices() - 1); this->frame.addIndex(frame.getNumVertices() - 2);

}

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

void ofApp::draw() {

auto camera_location = this->camera_location + glm::vec3(0, 0, 100);

this->cam.setPosition(camera_location);

this->cam.setTarget(target_location);

this->cam.lookAt(target_location);

this->cam.begin();

this->face.drawFaces();

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230426

2023年4月25日

Rainbow Ribbons. Draw by openFrameworks

[ Video ]

[ About ]
虹リボン。

[ 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;

	glm::vec3 target_location, camera_location;
};

#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;

glm::vec3 target_location, camera_location;

};

#include "ofApp.h"

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

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

	ofBackground(39);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

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

	frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

	auto base_noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
	this->camera_location = glm::vec3(
		ofMap(ofNoise(base_noise_seed.x, (ofGetFrameNum()) * 0.01), 0, 1, -500, 500),
		ofMap(ofNoise(base_noise_seed.y, (ofGetFrameNum()) * 0.01), 0, 1, -500, 500),
		ofMap(ofNoise(base_noise_seed.z, (ofGetFrameNum()) * 0.01), 0, 1, -500, 500));

	this->target_location = glm::vec3(
		ofMap(ofNoise(base_noise_seed.x, (ofGetFrameNum() + 100) * 0.01), 0, 1, -500, 500),
		ofMap(ofNoise(base_noise_seed.y, (ofGetFrameNum() + 100) * 0.01), 0, 1, -500, 500),
		ofMap(ofNoise(base_noise_seed.z, (ofGetFrameNum() + 100) * 0.01), 0, 1, -500, 500));

	for (int k = 0; k < 7; k++) {

		auto param = glm::vec3(15, 0, 0);
		auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
		auto start_index = this->face.getNumVertices();

		ofColor color;
		for (int i = 0; i < 100; i++) {

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

			auto base_location = glm::vec3(
				ofMap(ofNoise(base_noise_seed.x, (i + ofGetFrameNum()) * 0.01), 0, 1, -500, 500),
				ofMap(ofNoise(base_noise_seed.y, (i + ofGetFrameNum()) * 0.01), 0, 1, -500, 500),
				ofMap(ofNoise(base_noise_seed.z, (i + ofGetFrameNum()) * 0.01), 0, 1, -500, 500));

			auto location = glm::vec3(
				ofMap(ofNoise(noise_seed.x, (i + ofGetFrameNum()) * 0.02), 0, 1, -100, 100),
				ofMap(ofNoise(noise_seed.y, (i + ofGetFrameNum()) * 0.02), 0, 1, -100, 100),
				ofMap(ofNoise(noise_seed.z, (i + ofGetFrameNum()) * 0.02), 0, 1, -100, 100));

			location += base_location;

			this->face.addVertex(location + param);
			this->face.addVertex(location - param);

			color.setHsb(ofMap(k, 0, 7, 0, 255), 200, 255);

			this->face.addColor(color);
			this->face.addColor(color);

			this->frame.addVertex(location + param);
			this->frame.addVertex(location - param);

			this->frame.addColor(ofColor(255));
			this->frame.addColor(ofColor(255));

			if (i > 0) {

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

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

		this->frame.addIndex(start_index + 0); this->frame.addIndex(start_index + 1);
		this->frame.addIndex(frame.getNumVertices() - 1); this->frame.addIndex(frame.getNumVertices() - 2);
	}
}

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

	auto camera_location = this->camera_location + glm::vec3(0, 0, 500);

	this->cam.setPosition(camera_location);
	this->cam.setTarget(target_location);
	this->cam.lookAt(target_location);

	this->cam.begin();

	this->face.drawFaces();

	ofSetColor(239);
	this->frame.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
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(39);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

auto base_noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

this->camera_location = glm::vec3(

ofMap(ofNoise(base_noise_seed.x, (ofGetFrameNum()) * 0.01), 0, 1, -500, 500),

ofMap(ofNoise(base_noise_seed.y, (ofGetFrameNum()) * 0.01), 0, 1, -500, 500),

ofMap(ofNoise(base_noise_seed.z, (ofGetFrameNum()) * 0.01), 0, 1, -500, 500));

this->target_location = glm::vec3(

ofMap(ofNoise(base_noise_seed.x, (ofGetFrameNum() + 100) * 0.01), 0, 1, -500, 500),

ofMap(ofNoise(base_noise_seed.y, (ofGetFrameNum() + 100) * 0.01), 0, 1, -500, 500),

ofMap(ofNoise(base_noise_seed.z, (ofGetFrameNum() + 100) * 0.01), 0, 1, -500, 500));

for (int k = 0; k < 7; k++) {

auto param = glm::vec3(15, 0, 0);

auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

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

ofColor color;

for (int i = 0; i < 100; i++) {

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

auto base_location = glm::vec3(

ofMap(ofNoise(base_noise_seed.x, (i + ofGetFrameNum()) * 0.01), 0, 1, -500, 500),

ofMap(ofNoise(base_noise_seed.y, (i + ofGetFrameNum()) * 0.01), 0, 1, -500, 500),

ofMap(ofNoise(base_noise_seed.z, (i + ofGetFrameNum()) * 0.01), 0, 1, -500, 500));

auto location = glm::vec3(

ofMap(ofNoise(noise_seed.x, (i + ofGetFrameNum()) * 0.02), 0, 1, -100, 100),

ofMap(ofNoise(noise_seed.y, (i + ofGetFrameNum()) * 0.02), 0, 1, -100, 100),

ofMap(ofNoise(noise_seed.z, (i + ofGetFrameNum()) * 0.02), 0, 1, -100, 100));

location += base_location;

this->face.addVertex(location + param);

this->face.addVertex(location - param);

color.setHsb(ofMap(k, 0, 7, 0, 255), 200, 255);

this->face.addColor(color);

this->frame.addVertex(location + param);

this->frame.addVertex(location - param);

this->frame.addColor(ofColor(255));

if (i > 0) {

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

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

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

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

}

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

this->frame.addIndex(frame.getNumVertices() - 1); this->frame.addIndex(frame.getNumVertices() - 2);

}

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

void ofApp::draw() {

auto camera_location = this->camera_location + glm::vec3(0, 0, 500);

this->cam.setPosition(camera_location);

this->cam.setTarget(target_location);

this->cam.lookAt(target_location);

this->cam.begin();

this->face.drawFaces();

ofSetColor(239);

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230425

2023年4月17日

Color vortex. Draw by openFrameworks

[ Video ]

[ About ]
色渦。

[ 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, line;

	vector<float> radius_list;
	vector<float> deg_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) {};

ofEasyCam cam;

ofMesh face, line;

vector<float> radius_list;

vector<float> deg_list;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(2);

	ofEnableDepthTest();
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

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

	for (int i = 0; i < 2000; i++) {

		this->radius_list.push_back(ofRandom(1000));
		this->deg_list.push_back(ofRandom(360));
	}
}
//--------------------------------------------------------------
void ofApp::update() {

	ofSeedRandom(39);

	this->face.clear();
	int threshold_radius = 150;

	for (int radius = 0; radius <= 1000; radius += 10) {

		int start_index = this->line.getNumVertices();
		int index = start_index;
		int deg_start = radius;
		for (float deg = deg_start; deg < deg_start + 360; deg += 0.5) {

			auto z = radius > threshold_radius ? 0 : ofMap(radius, 0, threshold_radius, -1 * pow(threshold_radius - radius, 1.1), 0);
			int next_radius = radius + 10;
			int next_z = next_radius > threshold_radius ? 0 : ofMap(next_radius, 0, threshold_radius, -1 * pow(threshold_radius - next_radius, 1.1), 0);

			vector<glm::vec3> vertices;
			vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z));
			vertices.push_back(glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), z));
			vertices.push_back(glm::vec3(next_radius * cos((deg + 1) * DEG_TO_RAD), next_radius * sin((deg + 1) * DEG_TO_RAD), next_z));
			vertices.push_back(glm::vec3(next_radius * cos(deg * DEG_TO_RAD), next_radius * sin(deg * DEG_TO_RAD), next_z));

			face.addVertices(vertices);

			face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3);
			face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4);
		}
	}

	this->line.clear();

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

		int speed = 5;
		int radius_start = ((int)(this->radius_list[i] + speed) % 1000);
		int radius = 1000 - radius_start;
		float deg_start = this->deg_list[i] + (radius > threshold_radius ? 1 : ofMap(radius, 0, threshold_radius, pow(speed, ofMap(radius, 0, threshold_radius, 2, 1)), 1));
		float deg = deg_start;
		ofColor color;
		color.setHsb(ofRandom(255), 255, 150);

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

			radius = ((int)(this->radius_list[i] + speed * k) % 1000);
			radius = 1000 - radius;

			deg += (radius > threshold_radius ? 1 : ofMap(radius, 1, threshold_radius, pow(speed, ofMap(radius, 0, threshold_radius, 2, 1)), 1));

			auto z = radius > threshold_radius ? 0 : ofMap(radius, 0, threshold_radius, -1 * pow(threshold_radius - radius, 1.1), 0);
			auto vertex = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z + 2);
			this->line.addVertex(vertex);
			this->line.addColor(ofColor(color));

			if (k > 0) {

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

		}

		this->radius_list[i] = radius_start;
		this->deg_list[i] = deg_start;
	}
}

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

	this->cam.begin();
	ofRotateX(-35);

	ofSetColor(0);
	this->face.draw();
	ofSetColor(255);
	this->line.drawWireframe();

	this->cam.end();

}

//--------------------------------------------------------------
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(2);

ofEnableDepthTest();

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

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

for (int i = 0; i < 2000; i++) {

this->radius_list.push_back(ofRandom(1000));

this->deg_list.push_back(ofRandom(360));

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

int threshold_radius = 150;

for (int radius = 0; radius <= 1000; radius += 10) {

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

int index = start_index;

int deg_start = radius;

for (float deg = deg_start; deg < deg_start + 360; deg += 0.5) {

auto z = radius > threshold_radius ? 0 : ofMap(radius, 0, threshold_radius, -1 * pow(threshold_radius - radius, 1.1), 0);

int next_radius = radius + 10;

int next_z = next_radius > threshold_radius ? 0 : ofMap(next_radius, 0, threshold_radius, -1 * pow(threshold_radius - next_radius, 1.1), 0);

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z));

vertices.push_back(glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), z));

vertices.push_back(glm::vec3(next_radius * cos((deg + 1) * DEG_TO_RAD), next_radius * sin((deg + 1) * DEG_TO_RAD), next_z));

vertices.push_back(glm::vec3(next_radius * cos(deg * DEG_TO_RAD), next_radius * sin(deg * DEG_TO_RAD), next_z));

face.addVertices(vertices);

face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3);

face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4);

}

this->line.clear();

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

int speed = 5;

int radius_start = ((int)(this->radius_list[i] + speed) % 1000);

int radius = 1000 - radius_start;

float deg_start = this->deg_list[i] + (radius > threshold_radius ? 1 : ofMap(radius, 0, threshold_radius, pow(speed, ofMap(radius, 0, threshold_radius, 2, 1)), 1));

float deg = deg_start;

ofColor color;

color.setHsb(ofRandom(255), 255, 150);

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

radius = ((int)(this->radius_list[i] + speed * k) % 1000);

radius = 1000 - radius;

deg += (radius > threshold_radius ? 1 : ofMap(radius, 1, threshold_radius, pow(speed, ofMap(radius, 0, threshold_radius, 2, 1)), 1));

auto z = radius > threshold_radius ? 0 : ofMap(radius, 0, threshold_radius, -1 * pow(threshold_radius - radius, 1.1), 0);

auto vertex = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z + 2);

this->line.addVertex(vertex);

this->line.addColor(ofColor(color));

if (k > 0) {

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

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

}

this->radius_list[i] = radius_start;

this->deg_list[i] = deg_start;

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(-35);

ofSetColor(0);

this->face.draw();

ofSetColor(255);

this->line.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230417

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