ofMesh – ページ 89 – プログラミング de 落描き

2021年12月24日

Tracking cylinders. Draw by openFrameworks

[ Video ]

[ About ]
トーラスを追従させる。

Follow the torus.

[ 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) {};

	glm::vec3 make_point(float R, float r, float u, float v);

	ofEasyCam cam;
};

#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) {};

glm::vec3 make_point(float R, float r, float u, float v);

ofEasyCam cam;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofSetLineWidth(1.25);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateX(360 - 60);

	float R = 200;
	float r = 50;
	float u_span = 10;

	ofMesh face, line;
	line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

	for (int r = 50; r > 0; r -= 2) {

		int v_start = ofMap(ofNoise(r * 0.01 + ofGetFrameNum() * 0.025), 0, 1, -360, 360);
		int v_end = v_start + 30;
		int v_span = 2;

		for (int v = v_start; v <= v_end; v += v_span) {

			for (int u = 0; u < 360; u += u_span) {

				face.addVertex(this->make_point(R, r, u - u_span * 0.5, v - v_span * 0.5));
				face.addVertex(this->make_point(R, r, u + u_span * 0.5, v - v_span * 0.5));
				face.addVertex(this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5));
				face.addVertex(this->make_point(R, r, u - u_span * 0.5, v + v_span * 0.5));

				line.addVertex(this->make_point(R, r, u - u_span * 0.5, v - v_span * 0.5));
				line.addVertex(this->make_point(R, r, u + u_span * 0.5, v - v_span * 0.5));
				line.addVertex(this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5));
				line.addVertex(this->make_point(R, r, u - u_span * 0.5, v + v_span * 0.5));

				for (int i = 0; i < 4; i++) {

					face.addColor(ofColor(0));
					line.addColor(ofColor(255, 0, 0));
				}

				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);

				if (v == v_start) {

					line.addIndex(line.getNumVertices() - 3); line.addIndex(line.getNumVertices() - 4);
				}

				if (v == v_end) {

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

				face.addVertex(this->make_point(R, r, u - u_span * 0.5, v - v_span * 0.5 + 180));
				face.addVertex(this->make_point(R, r, u + u_span * 0.5, v - v_span * 0.5 + 180));
				face.addVertex(this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5 + 180));
				face.addVertex(this->make_point(R, r, u - u_span * 0.5, v + v_span * 0.5 + 180));

				line.addVertex(this->make_point(R, r, u - u_span * 0.5, v - v_span * 0.5 + 180));
				line.addVertex(this->make_point(R, r, u + u_span * 0.5, v - v_span * 0.5 + 180));
				line.addVertex(this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5 + 180));
				line.addVertex(this->make_point(R, r, u - u_span * 0.5, v + v_span * 0.5 + 180));

				for (int i = 0; i < 4; i++) {

					face.addColor(ofColor(0));
					line.addColor(ofColor(0, 0, 255));
				}

				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);

				if (v == v_start) {

					line.addIndex(line.getNumVertices() - 3); line.addIndex(line.getNumVertices() - 4);
				}

				if (v == v_end) {

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

	face.draw();
	line.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

	// 数学デッサン教室 描いて楽しむ数学たち　P.31

	u *= DEG_TO_RAD;
	v *= DEG_TO_RAD;

	auto x = (R + r * cos(u)) * cos(v);
	auto y = (R + r * cos(u)) * sin(v);
	auto z = r * sin(u);

	return glm::vec3(x, y, z);
}

//--------------------------------------------------------------
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(255);

ofSetLineWidth(1.25);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(360 - 60);

float R = 200;

float r = 50;

float u_span = 10;

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

for (int r = 50; r > 0; r -= 2) {

int v_start = ofMap(ofNoise(r * 0.01 + ofGetFrameNum() * 0.025), 0, 1, -360, 360);

int v_end = v_start + 30;

int v_span = 2;

for (int v = v_start; v <= v_end; v += v_span) {

for (int u = 0; u < 360; u += u_span) {

face.addVertex(this->make_point(R, r, u - u_span * 0.5, v - v_span * 0.5));

face.addVertex(this->make_point(R, r, u + u_span * 0.5, v - v_span * 0.5));

face.addVertex(this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5));

face.addVertex(this->make_point(R, r, u - u_span * 0.5, v + v_span * 0.5));

line.addVertex(this->make_point(R, r, u - u_span * 0.5, v - v_span * 0.5));

line.addVertex(this->make_point(R, r, u + u_span * 0.5, v - v_span * 0.5));

line.addVertex(this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5));

line.addVertex(this->make_point(R, r, u - u_span * 0.5, v + v_span * 0.5));

for (int i = 0; i < 4; i++) {

face.addColor(ofColor(0));

line.addColor(ofColor(255, 0, 0));

}

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);

if (v == v_start) {

line.addIndex(line.getNumVertices() - 3); line.addIndex(line.getNumVertices() - 4);

}

if (v == v_end) {

line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 2);

}

face.addVertex(this->make_point(R, r, u - u_span * 0.5, v - v_span * 0.5 + 180));

face.addVertex(this->make_point(R, r, u + u_span * 0.5, v - v_span * 0.5 + 180));

face.addVertex(this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5 + 180));

face.addVertex(this->make_point(R, r, u - u_span * 0.5, v + v_span * 0.5 + 180));

line.addVertex(this->make_point(R, r, u - u_span * 0.5, v - v_span * 0.5 + 180));

line.addVertex(this->make_point(R, r, u + u_span * 0.5, v - v_span * 0.5 + 180));

line.addVertex(this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5 + 180));

line.addVertex(this->make_point(R, r, u - u_span * 0.5, v + v_span * 0.5 + 180));

for (int i = 0; i < 4; i++) {

face.addColor(ofColor(0));

line.addColor(ofColor(0, 0, 255));

}

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);

if (v == v_start) {

line.addIndex(line.getNumVertices() - 3); line.addIndex(line.getNumVertices() - 4);

}

if (v == v_end) {

line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 2);

}

face.draw();

line.drawWireframe();

this->cam.end();

}

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

glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

// 数学デッサン教室描いて楽しむ数学たち　P.31

u *= DEG_TO_RAD;

v *= DEG_TO_RAD;

auto x = (R + r * cos(u)) * cos(v);

auto y = (R + r * cos(u)) * sin(v);

auto z = r * sin(u);

return glm::vec3(x, y, z);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211224

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2021年12月23日

Circle at intersection. Draw by openFrameworks

[ Video ]

[ About ]
近づいたら円を描くものをノイズの線で。

Use a noise line to draw a circle when you get close.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

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

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

	ofMesh mesh;
	vector<glm::vec3> circle_list;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofMesh mesh;

vector<glm::vec3> circle_list;

};

#include "ofApp.h"	

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

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

	ofBackground(0);
	ofSetLineWidth(1.5);
	ofSetCircleResolution(36);

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

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

	ofSeedRandom(39);
	
	this->mesh.clear();
	this->circle_list.clear();
	
	vector<glm::vec2> location_list;
	for (int i = 0; i < 3; i++) {

		auto noise_seed = ofRandom(1000);
		for (int x = -360; x <= 360; x += 5) {

			auto location = glm::vec2(x, ofMap(ofNoise(noise_seed, x * 0.0065, ofGetFrameNum() * 0.0065), 0, 1, -200, 200));
			location_list.push_back(location);

			this->mesh.addVertex(glm::vec3(location, 3));
			if (x > -360) {

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

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

		this->circle_list.push_back(glm::vec3(location_list[i], 0));
		auto near_count = 0;
		for (int k = 0; k < location_list.size(); k++) {

			if (i == k) { continue; }

			auto distance = glm::distance(location_list[i], location_list[k]);
			if (distance < 15) {

				near_count++;
			}
		}

		this->circle_list.back().z = pow(1.5, near_count);
	}
}

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

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

	ofSetColor(255);
	ofSetLineWidth(0.5);
	this->mesh.drawWireframe();
	
	ofNoFill();
	ofSetLineWidth(2);
	for (auto& circle : this->circle_list) {

		ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);
	}

	ofFill();
	ofSetColor(0);
	for (auto& circle : this->circle_list) {

		ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(1.5);

ofSetCircleResolution(36);

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

this->circle_list.clear();

vector<glm::vec2> location_list;

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

auto noise_seed = ofRandom(1000);

for (int x = -360; x <= 360; x += 5) {

auto location = glm::vec2(x, ofMap(ofNoise(noise_seed, x * 0.0065, ofGetFrameNum() * 0.0065), 0, 1, -200, 200));

location_list.push_back(location);

this->mesh.addVertex(glm::vec3(location, 3));

if (x > -360) {

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

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

}

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

this->circle_list.push_back(glm::vec3(location_list[i], 0));

auto near_count = 0;

for (int k = 0; k < location_list.size(); k++) {

if (i == k) { continue; }

auto distance = glm::distance(location_list[i], location_list[k]);

if (distance < 15) {

near_count++;

}

this->circle_list.back().z = pow(1.5, near_count);

}

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

void ofApp::draw() {

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

ofSetColor(255);

ofSetLineWidth(0.5);

this->mesh.drawWireframe();

ofNoFill();

ofSetLineWidth(2);

for (auto& circle : this->circle_list) {

ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);

}

ofFill();

ofSetColor(0);

for (auto& circle : this->circle_list) {

ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211223

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2021年12月21日2021年12月21日

Chain of arcs. Draw by openFrameworks

[ Video ]

[ About ]
Noiseの引数をradius – frameCountとして、伝播するアニメーションにする。

Set the Noise argument as radius – frameCount to make it a propagating animation.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

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

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

	ofMesh 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) {};

ofMesh face, frame;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(2);

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

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

	ofSeedRandom(39);

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

	float deg_span = 2;
	float len = 10;

	for (float radius = 50; radius < 720; radius += 20) {

		for (float deg = 0; deg < 360; deg += deg_span) {

			auto noise_location = glm::vec2(cos(deg * DEG_TO_RAD), sin(deg * DEG_TO_RAD));
			auto prev_noise_location = glm::vec2(cos((deg - deg_span) * DEG_TO_RAD), sin((deg - deg_span) * DEG_TO_RAD));
			auto next_noise_location = glm::vec2(cos((deg + deg_span) * DEG_TO_RAD), sin((deg + deg_span) * DEG_TO_RAD));
			
			auto noise_value = ofNoise(glm::vec3(noise_location * 0.5, radius * 0.005 - ofGetFrameNum() * 0.05));
			auto prev_noise_value = ofNoise(glm::vec3(prev_noise_location * 0.5, radius * 0.005 - ofGetFrameNum() * 0.05));
			auto next_noise_value = ofNoise(glm::vec3(next_noise_location * 0.5, radius * 0.005 - ofGetFrameNum() * 0.05));

			if (noise_value > 0.5) {

				vector<glm::vec3> vertices;
				vertices.push_back(glm::vec3((radius + len * 0.5) * cos((deg + deg_span * 0.5) * DEG_TO_RAD), (radius + len * 0.5) * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));
				vertices.push_back(glm::vec3((radius - len * 0.5) * cos((deg + deg_span * 0.5) * DEG_TO_RAD), (radius - len * 0.5) * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));
				vertices.push_back(glm::vec3((radius - len * 0.5) * cos((deg - deg_span * 0.5) * DEG_TO_RAD), (radius - len * 0.5) * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));
				vertices.push_back(glm::vec3((radius + len * 0.5) * cos((deg - deg_span * 0.5) * DEG_TO_RAD), (radius + len * 0.5) * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));

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

				this->face.addTriangle(this->face.getNumVertices() - 1, this->face.getNumVertices() - 2, this->face.getNumVertices() - 3);
				this->face.addTriangle(this->face.getNumVertices() - 1, this->face.getNumVertices() - 3, this->face.getNumVertices() - 4);

				this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 4);
				this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 3);

				if (prev_noise_value <= 0.5) {

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

				if (next_noise_value <= 0.5) {

					this->frame.addIndex(this->frame.getNumVertices() - 3); this->frame.addIndex(this->frame.getNumVertices() - 4);
				}
			}
		}
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);
	
	ofSetColor(255);
	this->face.draw();

	ofSetColor(128);
	this->frame.draw();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(2);

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

float deg_span = 2;

float len = 10;

for (float radius = 50; radius < 720; radius += 20) {

for (float deg = 0; deg < 360; deg += deg_span) {

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

auto prev_noise_location = glm::vec2(cos((deg - deg_span) * DEG_TO_RAD), sin((deg - deg_span) * DEG_TO_RAD));

auto next_noise_location = glm::vec2(cos((deg + deg_span) * DEG_TO_RAD), sin((deg + deg_span) * DEG_TO_RAD));

auto noise_value = ofNoise(glm::vec3(noise_location * 0.5, radius * 0.005 - ofGetFrameNum() * 0.05));

auto prev_noise_value = ofNoise(glm::vec3(prev_noise_location * 0.5, radius * 0.005 - ofGetFrameNum() * 0.05));

auto next_noise_value = ofNoise(glm::vec3(next_noise_location * 0.5, radius * 0.005 - ofGetFrameNum() * 0.05));

if (noise_value > 0.5) {

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3((radius + len * 0.5) * cos((deg + deg_span * 0.5) * DEG_TO_RAD), (radius + len * 0.5) * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));

vertices.push_back(glm::vec3((radius - len * 0.5) * cos((deg + deg_span * 0.5) * DEG_TO_RAD), (radius - len * 0.5) * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));

vertices.push_back(glm::vec3((radius - len * 0.5) * cos((deg - deg_span * 0.5) * DEG_TO_RAD), (radius - len * 0.5) * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));

vertices.push_back(glm::vec3((radius + len * 0.5) * cos((deg - deg_span * 0.5) * DEG_TO_RAD), (radius + len * 0.5) * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));

this->face.addVertices(vertices);

this->frame.addVertices(vertices);

this->face.addTriangle(this->face.getNumVertices() - 1, this->face.getNumVertices() - 2, this->face.getNumVertices() - 3);

this->face.addTriangle(this->face.getNumVertices() - 1, this->face.getNumVertices() - 3, this->face.getNumVertices() - 4);

this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 4);

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

if (prev_noise_value <= 0.5) {

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

}

if (next_noise_value <= 0.5) {

this->frame.addIndex(this->frame.getNumVertices() - 3); this->frame.addIndex(this->frame.getNumVertices() - 4);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

ofSetColor(255);

this->face.draw();

ofSetColor(128);

this->frame.draw();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211221

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