プログラミング de 落描き – ページ 336 – クリエイティブ・コーディングによる生成物とソース

2021年7月16日2021年7月16日

Teleport font. Draw by openFrameworks

[ Video ]

[ About ]
天地をひっくり返す。
y += ofNoise() > 0.5 ? ofMap(-100, 100) : ofMap(100, -100)

Turn the top and bottom over.
+= ofNoise() > 0.5 ? ofMap(-100, 100) : ofMap(100, -100)

[ 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;

	float font_size;
	ofTrueTypeFont font;
};

#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;

float font_size;

ofTrueTypeFont font;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(2);
	ofEnableDepthTest();

	this->font_size = 80;
	this->font.loadFont("fonts/Kazesawa-Bold.ttf", this->font_size, true, true, true);
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateX(180);

	string word = "ABCDEFGHEJKLMNOPQRSTUVWXYZ!";
	int sample_count = 180;
	auto noise_param = ofRandom(1000);
	
	for (int i = 0; i < word.size(); i++) {

		ofPath chara_path = this->font.getCharacterAsPoints(word[i], true, false);
		vector<ofPolyline> outline = chara_path.getOutline();

		ofFill();
		ofSetColor(239);
		ofBeginShape();
		for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

			if (outline_index != 0) { ofNextContour(true); }

			auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();
			for (auto& vertex : vertices) {

				auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);
				auto rotation_y = glm::rotate(glm::mat4(), (i * 13.5f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));
				location = glm::vec4(location, 0) * rotation_y;

				auto noise_value = ofNoise(noise_param, i * 0.5 + ofGetFrameNum() * 0.02);
				float param = noise_value;
				location += glm::vec3(0, ofMap(noise_value, 0, 1, -100, 100), 0);

				if (location.y > 0) {
				
					ofVertex(location - glm::vec3(0, 100, 0));
				}
			}
		}
		ofEndShape();

		ofNoFill();
		ofSetColor(39);
		ofBeginShape();
		for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

			if (outline_index != 0) { ofNextContour(true); }

			auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();
			for (auto& vertex : vertices) {

				auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);
				auto rotation_y = glm::rotate(glm::mat4(), (i * 13.5f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));
				location = glm::vec4(location, 0) * rotation_y;

				auto noise_value = ofNoise(noise_param, i * 0.5 + ofGetFrameNum() * 0.02);
				float param = noise_value;
				location += glm::vec3(0, ofMap(noise_value, 0, 1, -100, 100), 0);

				if (location.y > 0) {

					ofVertex(location - glm::vec3(0, 100, 0));
				}
			}
		}
		ofEndShape();
	}

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

		ofPath chara_path = this->font.getCharacterAsPoints(word[i], true, false);
		vector<ofPolyline> outline = chara_path.getOutline();

		ofFill();
		ofSetColor(239);
		ofBeginShape();
		for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

			if (outline_index != 0) { ofNextContour(true); }

			auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();
			for (auto& vertex : vertices) {

				auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);
				auto rotation_y = glm::rotate(glm::mat4(), (i * 13.5f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));
				location = glm::vec4(location, 0) * rotation_y;

				auto noise_value = ofNoise(noise_param, i * 0.5 + ofGetFrameNum() * 0.02);
				float param = noise_value;
				location += glm::vec3(0, ofMap(noise_value, 0, 1, -100, 100), 0);

				if (location.y < 0) {

					ofVertex(location + glm::vec3(0, 100, 0));
				}
			}
		}
		ofEndShape();

		ofNoFill();
		ofSetColor(39);
		ofBeginShape();
		for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

			if (outline_index != 0) { ofNextContour(true); }

			auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();
			for (auto& vertex : vertices) {

				auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);
				auto rotation_y = glm::rotate(glm::mat4(), (i * 13.5f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));
				location = glm::vec4(location, 0) * rotation_y;

				auto noise_value = ofNoise(noise_param, i * 0.5 + ofGetFrameNum() * 0.02);
				float param = noise_value;
				location += glm::vec3(0, ofMap(noise_value, 0, 1, -100, 100), 0);

				if (location.y < 0) {

					ofVertex(location + glm::vec3(0, 100, 0));
				}
			}
		}
		ofEndShape();
	}

	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(0);

ofSetLineWidth(2);

ofEnableDepthTest();

this->font_size = 80;

this->font.loadFont("fonts/Kazesawa-Bold.ttf", this->font_size, true, true, true);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

string word = "ABCDEFGHEJKLMNOPQRSTUVWXYZ!";

int sample_count = 180;

auto noise_param = ofRandom(1000);

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

ofPath chara_path = this->font.getCharacterAsPoints(word[i], true, false);

vector<ofPolyline> outline = chara_path.getOutline();

ofFill();

ofSetColor(239);

ofBeginShape();

for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

if (outline_index != 0) { ofNextContour(true); }

auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();

for (auto& vertex : vertices) {

auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);

auto rotation_y = glm::rotate(glm::mat4(), (i * 13.5f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

location = glm::vec4(location, 0) * rotation_y;

auto noise_value = ofNoise(noise_param, i * 0.5 + ofGetFrameNum() * 0.02);

float param = noise_value;

location += glm::vec3(0, ofMap(noise_value, 0, 1, -100, 100), 0);

if (location.y > 0) {

ofVertex(location - glm::vec3(0, 100, 0));

}

ofEndShape();

ofNoFill();

ofSetColor(39);

ofBeginShape();

for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

if (outline_index != 0) { ofNextContour(true); }

auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();

for (auto& vertex : vertices) {

auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);

auto rotation_y = glm::rotate(glm::mat4(), (i * 13.5f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

location = glm::vec4(location, 0) * rotation_y;

auto noise_value = ofNoise(noise_param, i * 0.5 + ofGetFrameNum() * 0.02);

float param = noise_value;

location += glm::vec3(0, ofMap(noise_value, 0, 1, -100, 100), 0);

if (location.y > 0) {

ofVertex(location - glm::vec3(0, 100, 0));

}

ofEndShape();

}

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

ofPath chara_path = this->font.getCharacterAsPoints(word[i], true, false);

vector<ofPolyline> outline = chara_path.getOutline();

ofFill();

ofSetColor(239);

ofBeginShape();

for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

if (outline_index != 0) { ofNextContour(true); }

auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();

for (auto& vertex : vertices) {

auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);

auto rotation_y = glm::rotate(glm::mat4(), (i * 13.5f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

location = glm::vec4(location, 0) * rotation_y;

auto noise_value = ofNoise(noise_param, i * 0.5 + ofGetFrameNum() * 0.02);

float param = noise_value;

location += glm::vec3(0, ofMap(noise_value, 0, 1, -100, 100), 0);

if (location.y < 0) {

ofVertex(location + glm::vec3(0, 100, 0));

}

ofEndShape();

ofNoFill();

ofSetColor(39);

ofBeginShape();

for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

if (outline_index != 0) { ofNextContour(true); }

auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();

for (auto& vertex : vertices) {

auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);

auto rotation_y = glm::rotate(glm::mat4(), (i * 13.5f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

location = glm::vec4(location, 0) * rotation_y;

auto noise_value = ofNoise(noise_param, i * 0.5 + ofGetFrameNum() * 0.02);

float param = noise_value;

location += glm::vec3(0, ofMap(noise_value, 0, 1, -100, 100), 0);

if (location.y < 0) {

ofVertex(location + glm::vec3(0, 100, 0));

}

ofEndShape();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210716

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2021年7月15日2021年7月15日

out-of-body experience. Draw by openFrameworks

[ Video ]

[ About ]
文字の座標を2回に分けて回転させる。
ofTrueTypeFont.getStringAsPoints()で取得した座標にglm::highp_mat4で回転した座標を計算する。

Rotate the coordinates of a character twice.
Calculate the coordinates rotated by glm::highp_mat4 to the coordinates retrieved by ofTrueTypeFont.getStringAsPoints().

[ 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;

	float font_size;
	ofTrueTypeFont font;
};

#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;

float font_size;

ofTrueTypeFont font;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(1.5);
	ofEnableDepthTest();

	this->font_size = 80;
	this->font.loadFont("fonts/Kazesawa-Bold.ttf", this->font_size, true, true, true);
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateX(180);

	string word = "ABCDEFGHEJKLMNOPQRSTUVWXYZ!";
	int sample_count = 180;
	auto noise_param = ofRandom(1000);
	
	for (int i = 0; i < word.size(); i++) {

		ofPath chara_path = this->font.getCharacterAsPoints(word[i], true, false);
		vector<ofPolyline> outline = chara_path.getOutline();

		ofFill();
		ofBeginShape();
		for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

			if (outline_index != 0) { ofNextContour(true); }

			auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();
			for (auto& vertex : vertices) {

				auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);
				auto rotation_y = glm::rotate(glm::mat4(), (i * 13.5f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));
				location = glm::vec4(location, 0) * rotation_y;

				auto noise_value = ofNoise(location.x * 0.002, ofGetFrameNum() * 0.005);
				float param = 0.5;
				if (noise_value < 0.3) { param = ofMap(noise_value, 0, 0.3, 0, 0.5); }
				if (noise_value > 0.7) { param = ofMap(noise_value, 0.7, 1, 0.5, 1); }

				auto rotation_x = glm::rotate(glm::mat4(), ofMap(param, 0, 1, -PI * 1, PI * 1), glm::vec3(1, 0, 0));
				location = glm::vec4(location, 0) * rotation_x;


				ofVertex(location);
			}
		}
		ofEndShape();

		ofNoFill();
		ofBeginShape();
		for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

			if (outline_index != 0) { ofNextContour(true); }

			auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();
			for (auto& vertex : vertices) {

				auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);
				auto rotation_y = glm::rotate(glm::mat4(), (i * 13.5f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));
				location = glm::vec4(location, 0) * rotation_y;

				ofVertex(location);
			}
		}
		ofEndShape();
	}

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(1.5);

ofEnableDepthTest();

this->font_size = 80;

this->font.loadFont("fonts/Kazesawa-Bold.ttf", this->font_size, true, true, true);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

string word = "ABCDEFGHEJKLMNOPQRSTUVWXYZ!";

int sample_count = 180;

auto noise_param = ofRandom(1000);

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

ofPath chara_path = this->font.getCharacterAsPoints(word[i], true, false);

vector<ofPolyline> outline = chara_path.getOutline();

ofFill();

ofBeginShape();

for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

if (outline_index != 0) { ofNextContour(true); }

auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();

for (auto& vertex : vertices) {

auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);

auto rotation_y = glm::rotate(glm::mat4(), (i * 13.5f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

location = glm::vec4(location, 0) * rotation_y;

auto noise_value = ofNoise(location.x * 0.002, ofGetFrameNum() * 0.005);

float param = 0.5;

if (noise_value < 0.3) { param = ofMap(noise_value, 0, 0.3, 0, 0.5); }

if (noise_value > 0.7) { param = ofMap(noise_value, 0.7, 1, 0.5, 1); }

auto rotation_x = glm::rotate(glm::mat4(), ofMap(param, 0, 1, -PI * 1, PI * 1), glm::vec3(1, 0, 0));

location = glm::vec4(location, 0) * rotation_x;

ofVertex(location);

}

ofEndShape();

ofNoFill();

ofBeginShape();

for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

if (outline_index != 0) { ofNextContour(true); }

auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();

for (auto& vertex : vertices) {

auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);

auto rotation_y = glm::rotate(glm::mat4(), (i * 13.5f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

location = glm::vec4(location, 0) * rotation_y;

ofVertex(location);

}

ofEndShape();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210715

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Amazon

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2021年7月14日2021年7月14日

Twisting circles. Draw by openFrameworks

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[ About ]
ofNoise(x, y + ofGetFrameNum())で伝播する動き。

Movement propagated by ofNoise(x, y + ofGetFrameNum())

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

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

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

	void setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float height);

	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) {};

void setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float height);

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(1.5);
	ofEnableDepthTest();

	this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}
//--------------------------------------------------------------
void ofApp::update() {

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

	for (int radius = 50; radius <= 170; radius += 20) {

		this->setRingToMesh(this->face, this->frame, glm::vec3(), radius, 60);
	}
}

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

	this->cam.begin();
	ofRotateY(-39);

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

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

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float height) {

	int index = face_target.getNumVertices();

	for (int deg = 0; deg < 360; deg += 1) {

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), height * 0.5));

		for (auto& vertex : vertices) {

			auto noise_value = ofNoise(
				(vertex.x) * 0.0015,
				(vertex.y) * 0.0015 + ofGetFrameNum() * 0.008);
			float param = 0.5;
			if (noise_value < 0.3) { param = ofMap(noise_value, 0, 0.3, 0, 0.5); }
			if (noise_value > 0.7) { param = ofMap(noise_value, 0.7, 1, 0.5, 1); }

			auto rotation = glm::rotate(glm::mat4(), ofMap(param, 0, 1, -PI * 3, PI * 3), glm::vec3(0, 1, 0));
			vertex = glm::vec4(vertex, 0) * rotation + glm::vec4(location, 0);
		}

		auto face_index = face_target.getNumVertices();
		face_target.addVertices(vertices);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);
		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

		auto frame_index = frame_target.getNumVertices();
		frame_target.addVertices(vertices);

		frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);
		frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(1.5);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

this->face.clear();

this->frame.clear();

for (int radius = 50; radius <= 170; radius += 20) {

this->setRingToMesh(this->face, this->frame, glm::vec3(), radius, 60);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(-39);

ofSetColor(39);

this->face.draw();

ofSetColor(239);

this->frame.drawWireframe();

this->cam.end();

}

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

void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float height) {

int index = face_target.getNumVertices();

for (int deg = 0; deg < 360; deg += 1) {

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), height * 0.5));

for (auto& vertex : vertices) {

auto noise_value = ofNoise(

(vertex.x) * 0.0015,

(vertex.y) * 0.0015 + ofGetFrameNum() * 0.008);

float param = 0.5;

if (noise_value < 0.3) { param = ofMap(noise_value, 0, 0.3, 0, 0.5); }

if (noise_value > 0.7) { param = ofMap(noise_value, 0.7, 1, 0.5, 1); }

auto rotation = glm::rotate(glm::mat4(), ofMap(param, 0, 1, -PI * 3, PI * 3), glm::vec3(0, 1, 0));

vertex = glm::vec4(vertex, 0) * rotation + glm::vec4(location, 0);

}

auto face_index = face_target.getNumVertices();

face_target.addVertices(vertices);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

auto frame_index = frame_target.getNumVertices();

frame_target.addVertices(vertices);

frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);

frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210714

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