RandomWalk – ページ 15 – プログラミング de 落描き

2023年4月24日

Dark mode. Draw by openFrameworks

[ Video ]

[ About ]
ダークモード。

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void mouseEntered(int x, int y) {};
	void mouseExited(int x, int y) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofEasyCam cam;

	vector<vector<glm::vec2>> log_list;
	vector<glm::vec2> velocity_list;
	vector<ofColor> color_list;

	vector<ofMesh> mesh_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 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) {};

ofEasyCam cam;

vector<vector<glm::vec2>> log_list;

vector<glm::vec2> velocity_list;

vector<ofColor> color_list;

vector<ofMesh> mesh_list;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(0);
	ofSetLineWidth(3);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
}

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

	this->mesh_list.clear();

	int radius = 100;
	ofColor color;

	while (this->log_list.size() < 1000) {

		int deg_base = ofRandom(360);
		int deg = deg_base / 1 * 1;

		vector<glm::vec2> log;
		auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
		log.push_back(location);
		auto next = glm::vec2((radius - 10) * cos(deg * DEG_TO_RAD), (radius - 10) * sin(deg * DEG_TO_RAD));

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

		auto future = location + distance * 30;
		auto random_deg = ofRandom(360);
		future += glm::vec2(120 * cos(random_deg * DEG_TO_RAD), 120 * sin(random_deg * DEG_TO_RAD));
		auto future_distance = future - location;

		this->log_list.push_back(log);
		this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance) * ofRandom(0, 0.8));
		auto hue = (int)(ofMap(deg_base, 0, 360, 0, 255) + ofRandom(120)) % 255;
		color.setHsb(hue, 255, 255);
		this->color_list.push_back(color);
	}

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

		auto location = this->log_list[i][this->log_list[i].size() - 1];

		auto deg = atan2(this->velocity_list[i].y, this->velocity_list[i].x) * RAD_TO_DEG;
		deg += ofMap(ofNoise(glm::vec3(location * 0.005, ofGetFrameNum() * 0.01)), 0, 1, -30, 30);
		auto len = glm::length(this->velocity_list[i]);
		location += glm::vec2(len * cos(deg * DEG_TO_RAD), len * sin(deg * DEG_TO_RAD));

		if (glm::distance(glm::vec2(), this->log_list[i][this->log_list[i].size() - 1]) > 500) {

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

			continue;
		}

		this->log_list[i].push_back(location);
		this->velocity_list[i] *= 1.0;
	}

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

		ofMesh mesh;
		mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

		auto len = glm::length(this->log_list[i][this->log_list[i].size() - 1]);
		auto alpha = len < 100 ? 128 : ofMap(len, 100, 600, 128, 0);
		for (int k = 0; k < this->log_list[i].size(); k++) {

			mesh.addVertex(glm::vec3(this->log_list[i][k], 0));
			mesh.addColor(ofColor(this->color_list[i], alpha));

			if (k > 0) {

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

		this->mesh_list.push_back(mesh);
	}
}

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

	this->cam.begin();

	for (auto& mesh : this->mesh_list) {

		mesh.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(3);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

}

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

void ofApp::update() {

this->mesh_list.clear();

int radius = 100;

ofColor color;

while (this->log_list.size() < 1000) {

int deg_base = ofRandom(360);

int deg = deg_base / 1 * 1;

vector<glm::vec2> log;

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

log.push_back(location);

auto next = glm::vec2((radius - 10) * cos(deg * DEG_TO_RAD), (radius - 10) * sin(deg * DEG_TO_RAD));

auto distance = location - next;

distance *= 1;

auto future = location + distance * 30;

auto random_deg = ofRandom(360);

future += glm::vec2(120 * cos(random_deg * DEG_TO_RAD), 120 * sin(random_deg * DEG_TO_RAD));

auto future_distance = future - location;

this->log_list.push_back(log);

this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance) * ofRandom(0, 0.8));

auto hue = (int)(ofMap(deg_base, 0, 360, 0, 255) + ofRandom(120)) % 255;

color.setHsb(hue, 255, 255);

this->color_list.push_back(color);

}

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

auto location = this->log_list[i][this->log_list[i].size() - 1];

auto deg = atan2(this->velocity_list[i].y, this->velocity_list[i].x) * RAD_TO_DEG;

deg += ofMap(ofNoise(glm::vec3(location * 0.005, ofGetFrameNum() * 0.01)), 0, 1, -30, 30);

auto len = glm::length(this->velocity_list[i]);

location += glm::vec2(len * cos(deg * DEG_TO_RAD), len * sin(deg * DEG_TO_RAD));

if (glm::distance(glm::vec2(), this->log_list[i][this->log_list[i].size() - 1]) > 500) {

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

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

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

continue;

}

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

this->velocity_list[i] *= 1.0;

}

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

ofMesh mesh;

mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

auto len = glm::length(this->log_list[i][this->log_list[i].size() - 1]);

auto alpha = len < 100 ? 128 : ofMap(len, 100, 600, 128, 0);

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

mesh.addVertex(glm::vec3(this->log_list[i][k], 0));

mesh.addColor(ofColor(this->color_list[i], alpha));

if (k > 0) {

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

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

}

this->mesh_list.push_back(mesh);

}

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

void ofApp::draw() {

this->cam.begin();

for (auto& mesh : this->mesh_list) {

mesh.drawWireframe();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230424

[ほしいものリスト]
Amazon

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2023年4月23日

Radiating color. Draw by openFrameworks

[ Video ]

[ About ]
放射する色線。

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void mouseEntered(int x, int y) {};
	void mouseExited(int x, int y) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	vector<vector<glm::vec2>> log_list;
	vector<glm::vec2> velocity_list;
	vector<ofColor> color_list;

	vector<ofMesh> mesh_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 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) {};

vector<vector<glm::vec2>> log_list;

vector<glm::vec2> velocity_list;

vector<ofColor> color_list;

vector<ofMesh> mesh_list;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetLineWidth(3);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_SUBTRACT);
}

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

	this->mesh_list.clear();

	int radius = 100;
	ofColor color;

	while (this->log_list.size() < 3000) {

		int deg_base = ofRandom(360);
		int deg = deg_base / 5 * 5;

		vector<glm::vec2> log;
		auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
		log.push_back(location);
		auto next = glm::vec2((radius - 10) * cos(deg * DEG_TO_RAD), (radius - 10) * sin(deg * DEG_TO_RAD));

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

		auto future = location + distance * 30;
		auto random_deg = ofRandom(360);
		future += glm::vec2(120 * cos(random_deg * DEG_TO_RAD), 120 * sin(random_deg * DEG_TO_RAD));
		auto future_distance = future - location;

		this->log_list.push_back(log);
		this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance) * ofRandom(0.25, 0.6));
		auto hue = (int)(ofMap(deg_base, 0, 360, 0, 255) + ofRandom(120)) % 255;
		color.setHsb(hue, 255, 255);
		this->color_list.push_back(color);
	}

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

		auto location = this->log_list[i][this->log_list[i].size() - 1];

		auto deg = atan2(this->velocity_list[i].y, this->velocity_list[i].x) * RAD_TO_DEG;
		deg += ofMap(ofNoise(glm::vec3(location * 0.005, ofGetFrameNum() * 0.01)), 0, 1, -30, 30);
		auto len = glm::length(this->velocity_list[i]);
		location += glm::vec2(len * cos(deg * DEG_TO_RAD), len * sin(deg * DEG_TO_RAD));

		if (glm::distance(glm::vec2(), this->log_list[i][this->log_list[i].size() - 1]) > 1000) {

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

			continue;
		}

		this->log_list[i].push_back(location);
		this->velocity_list[i] *= 1.0;
	}

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

		ofMesh mesh;
		mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

		auto len = glm::length(this->log_list[i][this->log_list[i].size() - 1]);
		for (int k = 0; k < this->log_list[i].size(); k++) {

			mesh.addVertex(glm::vec3(this->log_list[i][k], 0));
			mesh.addColor(ofColor(this->color_list[i], ofMap(len, 0, 1000, 128, 0)));

			if (k > 0) {

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

		this->mesh_list.push_back(mesh);
	}
}

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

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

	for (auto& mesh : this->mesh_list) {

		mesh.drawWireframe();
	}
}

//--------------------------------------------------------------
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(239);

ofSetLineWidth(3);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_SUBTRACT);

}

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

void ofApp::update() {

this->mesh_list.clear();

int radius = 100;

ofColor color;

while (this->log_list.size() < 3000) {

int deg_base = ofRandom(360);

int deg = deg_base / 5 * 5;

vector<glm::vec2> log;

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

log.push_back(location);

auto next = glm::vec2((radius - 10) * cos(deg * DEG_TO_RAD), (radius - 10) * sin(deg * DEG_TO_RAD));

auto distance = location - next;

distance *= 1;

auto future = location + distance * 30;

auto random_deg = ofRandom(360);

future += glm::vec2(120 * cos(random_deg * DEG_TO_RAD), 120 * sin(random_deg * DEG_TO_RAD));

auto future_distance = future - location;

this->log_list.push_back(log);

this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance) * ofRandom(0.25, 0.6));

auto hue = (int)(ofMap(deg_base, 0, 360, 0, 255) + ofRandom(120)) % 255;

color.setHsb(hue, 255, 255);

this->color_list.push_back(color);

}

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

auto location = this->log_list[i][this->log_list[i].size() - 1];

auto deg = atan2(this->velocity_list[i].y, this->velocity_list[i].x) * RAD_TO_DEG;

deg += ofMap(ofNoise(glm::vec3(location * 0.005, ofGetFrameNum() * 0.01)), 0, 1, -30, 30);

auto len = glm::length(this->velocity_list[i]);

location += glm::vec2(len * cos(deg * DEG_TO_RAD), len * sin(deg * DEG_TO_RAD));

if (glm::distance(glm::vec2(), this->log_list[i][this->log_list[i].size() - 1]) > 1000) {

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

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

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

continue;

}

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

this->velocity_list[i] *= 1.0;

}

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

ofMesh mesh;

mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

auto len = glm::length(this->log_list[i][this->log_list[i].size() - 1]);

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

mesh.addVertex(glm::vec3(this->log_list[i][k], 0));

mesh.addColor(ofColor(this->color_list[i], ofMap(len, 0, 1000, 128, 0)));

if (k > 0) {

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

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

}

this->mesh_list.push_back(mesh);

}

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

void ofApp::draw() {

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

for (auto& mesh : this->mesh_list) {

mesh.drawWireframe();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230423

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2023年4月18日2023年4月18日

Color thorn. Draw by openFrameworks

[ Video ]

[ About ]
色棘。

[ 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(239);
	ofSetColor(255);
	ofSetLineWidth(3);

	ofEnableDepthTest();
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_MULTIPLY);

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

	for (int i = 0; i < 1000; i++) {

		this->radius_list.push_back(ofRandom(1500));
		this->deg_list.push_back(ofRandom(360));
	}
}
//--------------------------------------------------------------
void ofApp::update() {

	ofSeedRandom(39);

	this->face.clear();
	int threshold_radius = 300;
	int max_radius = 1500;

	for (int radius = 0; radius <= max_radius; 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 += 1) {

			auto z = radius > threshold_radius ? 0 : ofMap(radius, 0, threshold_radius, -1 * pow(threshold_radius - radius, 1.05), 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, 1.05), 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) % max_radius);
		int radius = max_radius - 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), 150, 150);

		for (int k = 0; k < 30; k++) {

			radius = ((int)(this->radius_list[i] + speed * k) % max_radius);
			radius = max_radius - 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, 1.05), 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 && radius < max_radius - 10) {

				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(180);
	ofRotateX(sin(ofGetFrameNum() *  0.03) * 30);
	ofRotateY(cos(ofGetFrameNum() *  0.03) * 30);

	this->face.draw();
	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(239);

ofSetColor(255);

ofSetLineWidth(3);

ofEnableDepthTest();

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_MULTIPLY);

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

for (int i = 0; i < 1000; i++) {

this->radius_list.push_back(ofRandom(1500));

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

int threshold_radius = 300;

int max_radius = 1500;

for (int radius = 0; radius <= max_radius; 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 += 1) {

auto z = radius > threshold_radius ? 0 : ofMap(radius, 0, threshold_radius, -1 * pow(threshold_radius - radius, 1.05), 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, 1.05), 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) % max_radius);

int radius = max_radius - 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), 150, 150);

for (int k = 0; k < 30; k++) {

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

radius = max_radius - 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, 1.05), 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 && radius < max_radius - 10) {

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(180);

ofRotateX(sin(ofGetFrameNum() * 0.03) * 30);

ofRotateY(cos(ofGetFrameNum() * 0.03) * 30);

this->face.draw();

this->line.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230418

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