ofMesh – ページ 88 – プログラミング de 落描き

2021年12月27日2021年12月27日

Break out the shell. Draw by openFrameworks

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[ About ]
ノイズの値で変化する球体と変化しない球体。

Spheres that change with the value of noise and spheres that do not change.

[ 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;
	vector<ofMeshFace> triangle_list;
	ofMesh mesh, yolk;
};

#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;

vector<ofMeshFace> triangle_list;

ofMesh mesh, yolk;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofEnableDepthTest();
	
	auto ico_sphere = ofIcoSpherePrimitive(250, 5);
	this->triangle_list = ico_sphere.getMesh().getUniqueFaces();
}

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

	this->mesh.clear();
	this->yolk.clear();

	for (auto& triangle : this->triangle_list) {

		glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;

		vector<glm::vec3> vertices;
		vertices.push_back(triangle.getVertex(0));
		vertices.push_back(triangle.getVertex(1));
		vertices.push_back(triangle.getVertex(2));

		for (auto& vertex : vertices) {

			auto noise_value = 0.28 + ofNoise(glm::vec4(vertex * 0.01, ofGetFrameNum() * 0.0065));
			noise_value = pow(noise_value, 2);
			auto noise_radius = 280 * noise_value;
			vertex = glm::normalize(vertex) * noise_radius;
		}

		this->yolk.addVertices(vertices);
		this->yolk.addTriangle(this->yolk.getNumVertices() - 1, this->yolk.getNumVertices() - 2, this->yolk.getNumVertices() - 3);
	}

	for (auto& triangle : this->triangle_list) {

		glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;
		auto noise_value = 0.28 + ofNoise(glm::vec4(avg * 0.01, ofGetFrameNum() * 0.0065));
		noise_value = pow(noise_value, 2);
		auto noise_radius = 280 * noise_value;
		
		if (noise_radius < 180) {

			this->mesh.addVertex(triangle.getVertex(0));
			this->mesh.addVertex(triangle.getVertex(1));
			this->mesh.addVertex(triangle.getVertex(2));
		}
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * -0.3333);

	ofSetColor(255);
	
	this->mesh.draw();

	ofSetLineWidth(1);
	this->yolk.drawWireframe();

	ofSetColor(0);

	ofSetLineWidth(2);
	this->mesh.drawWireframe();

	this->yolk.draw();

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(255);

ofEnableDepthTest();

auto ico_sphere = ofIcoSpherePrimitive(250, 5);

this->triangle_list = ico_sphere.getMesh().getUniqueFaces();

}

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

void ofApp::update() {

this->mesh.clear();

this->yolk.clear();

for (auto& triangle : this->triangle_list) {

glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;

vector<glm::vec3> vertices;

vertices.push_back(triangle.getVertex(0));

vertices.push_back(triangle.getVertex(1));

vertices.push_back(triangle.getVertex(2));

for (auto& vertex : vertices) {

auto noise_value = 0.28 + ofNoise(glm::vec4(vertex * 0.01, ofGetFrameNum() * 0.0065));

noise_value = pow(noise_value, 2);

auto noise_radius = 280 * noise_value;

vertex = glm::normalize(vertex) * noise_radius;

}

this->yolk.addVertices(vertices);

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

}

for (auto& triangle : this->triangle_list) {

glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;

auto noise_value = 0.28 + ofNoise(glm::vec4(avg * 0.01, ofGetFrameNum() * 0.0065));

noise_value = pow(noise_value, 2);

auto noise_radius = 280 * noise_value;

if (noise_radius < 180) {

this->mesh.addVertex(triangle.getVertex(0));

this->mesh.addVertex(triangle.getVertex(1));

this->mesh.addVertex(triangle.getVertex(2));

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * -0.3333);

ofSetColor(255);

this->mesh.draw();

ofSetLineWidth(1);

this->yolk.drawWireframe();

ofSetColor(0);

ofSetLineWidth(2);

this->mesh.drawWireframe();

this->yolk.draw();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211227

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2021年12月26日2021年12月26日

Active boxes colorful. Draw by openFrameworks

[ Video ]

[ About ]
動いている箱だけに色を付ける。

Color only the boxes that are moving.

[ Source ]

#pragma once
#include "ofMain.h"

class Actor {
public:
	Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);
	void update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);
	glm::vec3 getLocation();
	deque<glm::vec3> getLog();
	bool isActive();
	float getHue();

private:

	int select_index;
	int next_index;
	float hue;

	glm::vec3 location;
	deque<glm::vec3> log;
};

class ofApp : public ofBaseApp {

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

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

	vector<glm::vec3> location_list;
	vector<vector<int>> next_index_list;
	vector<int> destination_list;

	vector<unique_ptr<Actor>> actor_list;

	ofEasyCam cam;
};

#pragma once

#include "ofMain.h"

class Actor {

public:

Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);

void update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);

glm::vec3 getLocation();

deque<glm::vec3> getLog();

bool isActive();

float getHue();

private:

int select_index;

int next_index;

float hue;

glm::vec3 location;

deque<glm::vec3> log;

};

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

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

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

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

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

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

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

vector<glm::vec3> location_list;

vector<vector<int>> next_index_list;

vector<int> destination_list;

vector<unique_ptr<Actor>> actor_list;

ofEasyCam cam;

};

#include "ofApp.h"	

//--------------------------------------------------------------
Actor::Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

	this->select_index = ofRandom(location_list.size());
	while (true) {

		auto itr = find(destination_list.begin(), destination_list.end(), this->select_index);
		if (itr == destination_list.end()) {

			destination_list.push_back(this->select_index);
			break;
		}

		this->select_index = (this->select_index + 1) % location_list.size();
	}

	this->next_index = this->select_index;
	this->hue = ofRandom(255);
}

//--------------------------------------------------------------
void Actor::update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

	if (ofGetFrameNum() % frame_span == 0) {

		auto tmp_index = this->select_index;
		this->select_index = this->next_index;
		int retry = next_index_list[this->select_index].size();
		this->next_index = next_index_list[this->select_index][(int)ofRandom(next_index_list[this->select_index].size())];
		while (--retry > 0) {

			auto destination_itr = find(destination_list.begin(), destination_list.end(), this->next_index);
			if (destination_itr == destination_list.end()) {

				if (tmp_index != this->next_index) {

					destination_list.push_back(this->next_index);
					break;
				}
			}

			this->next_index = next_index_list[this->select_index][(this->next_index + 1) % next_index_list[this->select_index].size()];
		}
		if (retry <= 0) {

			destination_list.push_back(this->select_index);
			this->next_index = this->select_index;
		}
	}

	auto param = ofGetFrameNum() % frame_span;
	auto distance = location_list[this->next_index] - location_list[this->select_index];
	this->location = location_list[this->select_index] + distance / frame_span * param;

	this->log.push_front(this->location);
	while (this->log.size() > 50) { this->log.pop_back(); }
}

//--------------------------------------------------------------
glm::vec3 Actor::getLocation() {

	return this->location;
}

//--------------------------------------------------------------
deque<glm::vec3> Actor::getLog() {

	return this->log;
}

//--------------------------------------------------------------
bool Actor::isActive() {

	return this->select_index != this->next_index;
}

//--------------------------------------------------------------
float Actor::getHue() {
	
	return this->hue;
}

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

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

	ofBackground(0);
	ofSetLineWidth(1.5);
	ofEnableDepthTest();

	for (int x = -250; x <= 250; x += 25) {

		for (int y = -250; y <= 250; y += 25) {

			for (int z = -250; z <= 250; z += 25) {

				if (glm::length(glm::vec3(x, y, z)) < 250) {

					this->location_list.push_back(glm::vec3(x, y, z));
				}
			}
		}
	}

	for (auto& location : this->location_list) {

		vector<int> next_index = vector<int>();
		int index = -1;
		for (auto& other : this->location_list) {

			index++;
			if (location == other) { continue; }

			float distance = glm::distance(location, other);
			if (distance <= 25) {

				next_index.push_back(index);
			}
		}

		this->next_index_list.push_back(next_index);
	}

	for (int i = 0; i < 3500; i++) {

		this->actor_list.push_back(make_unique<Actor>(this->location_list, this->next_index_list, this->destination_list));
	}
}

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

	int frame_span = 20;
	int prev_index_size = 0;

	if (ofGetFrameNum() % frame_span == 0) {

		prev_index_size = this->destination_list.size();
	}

	for (auto& actor : this->actor_list) {

		actor->update(frame_span, this->location_list, this->next_index_list, this->destination_list);
	}

	if (prev_index_size != 0) {

		this->destination_list.erase(this->destination_list.begin(), this->destination_list.begin() + prev_index_size);
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.6666666666666666);

	for (auto& actor : this->actor_list) {

		ofColor fill_color;

		if (actor->isActive()) {

			if (ofGetFrameNum() % 20 < 10) {

				fill_color.setHsb(actor->getHue(), 130, ofMap(ofGetFrameNum() % 20, 0, 10, 0, 255));
				ofSetColor(fill_color);
			}
			else {

				fill_color.setHsb(actor->getHue(), 130, ofMap(ofGetFrameNum() % 20, 10, 20, 255, 0));
				ofSetColor(fill_color);
			}
			
		}
		else {

			ofSetColor(0);
		}
		ofFill();
		ofDrawBox(actor->getLocation(), 23);

		if (actor->isActive()) {

			if (ofGetFrameNum() % 20 < 10) {

				ofSetColor(ofMap(ofGetFrameNum() % 20, 0, 10, 255, 0));
			}
			else {

				ofSetColor(ofMap(ofGetFrameNum() % 20, 10, 20, 0, 255));
			}

		}
		else {

			ofSetColor(255);
		}
		ofNoFill();
		ofDrawBox(actor->getLocation(), 23);
	}

	this->cam.end();
}


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

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

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#include "ofApp.h"

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

Actor::Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

this->select_index = ofRandom(location_list.size());

while (true) {

auto itr = find(destination_list.begin(), destination_list.end(), this->select_index);

if (itr == destination_list.end()) {

destination_list.push_back(this->select_index);

break;

}

this->select_index = (this->select_index + 1) % location_list.size();

}

this->next_index = this->select_index;

this->hue = ofRandom(255);

}

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

void Actor::update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

if (ofGetFrameNum() % frame_span == 0) {

auto tmp_index = this->select_index;

this->select_index = this->next_index;

int retry = next_index_list[this->select_index].size();

this->next_index = next_index_list[this->select_index][(int)ofRandom(next_index_list[this->select_index].size())];

while (--retry > 0) {

auto destination_itr = find(destination_list.begin(), destination_list.end(), this->next_index);

if (destination_itr == destination_list.end()) {

if (tmp_index != this->next_index) {

destination_list.push_back(this->next_index);

break;

}

this->next_index = next_index_list[this->select_index][(this->next_index + 1) % next_index_list[this->select_index].size()];

}

if (retry <= 0) {

destination_list.push_back(this->select_index);

this->next_index = this->select_index;

}

auto param = ofGetFrameNum() % frame_span;

auto distance = location_list[this->next_index] - location_list[this->select_index];

this->location = location_list[this->select_index] + distance / frame_span * param;

this->log.push_front(this->location);

while (this->log.size() > 50) { this->log.pop_back(); }

}

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

glm::vec3 Actor::getLocation() {

return this->location;

}

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

deque<glm::vec3> Actor::getLog() {

return this->log;

}

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

bool Actor::isActive() {

return this->select_index != this->next_index;

}

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

float Actor::getHue() {

return this->hue;

}

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(1.5);

ofEnableDepthTest();

for (int x = -250; x <= 250; x += 25) {

for (int y = -250; y <= 250; y += 25) {

for (int z = -250; z <= 250; z += 25) {

if (glm::length(glm::vec3(x, y, z)) < 250) {

this->location_list.push_back(glm::vec3(x, y, z));

}

for (auto& location : this->location_list) {

vector<int> next_index = vector<int>();

int index = -1;

for (auto& other : this->location_list) {

index++;

if (location == other) { continue; }

float distance = glm::distance(location, other);

if (distance <= 25) {

next_index.push_back(index);

}

this->next_index_list.push_back(next_index);

}

for (int i = 0; i < 3500; i++) {

this->actor_list.push_back(make_unique<Actor>(this->location_list, this->next_index_list, this->destination_list));

}

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

void ofApp::update() {

int frame_span = 20;

int prev_index_size = 0;

if (ofGetFrameNum() % frame_span == 0) {

prev_index_size = this->destination_list.size();

}

for (auto& actor : this->actor_list) {

actor->update(frame_span, this->location_list, this->next_index_list, this->destination_list);

}

if (prev_index_size != 0) {

this->destination_list.erase(this->destination_list.begin(), this->destination_list.begin() + prev_index_size);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.6666666666666666);

for (auto& actor : this->actor_list) {

ofColor fill_color;

if (actor->isActive()) {

if (ofGetFrameNum() % 20 < 10) {

fill_color.setHsb(actor->getHue(), 130, ofMap(ofGetFrameNum() % 20, 0, 10, 0, 255));

ofSetColor(fill_color);

}

else {

fill_color.setHsb(actor->getHue(), 130, ofMap(ofGetFrameNum() % 20, 10, 20, 255, 0));

ofSetColor(fill_color);

}

else {

ofSetColor(0);

}

ofFill();

ofDrawBox(actor->getLocation(), 23);

if (actor->isActive()) {

if (ofGetFrameNum() % 20 < 10) {

ofSetColor(ofMap(ofGetFrameNum() % 20, 0, 10, 255, 0));

}

else {

ofSetColor(ofMap(ofGetFrameNum() % 20, 10, 20, 0, 255));

}

else {

ofSetColor(255);

}

ofNoFill();

ofDrawBox(actor->getLocation(), 23);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211226

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2021年12月25日

Symmetrical ribbons flower. Draw by openFrameworks

[ Video ]

[ About ]
リボンを対称に描写する。

Describe the ribbons symmetrically.

[ 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;
};

#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;

};

#include "ofApp.h"

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

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

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

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

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

	ofSeedRandom(39);

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

	auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));
	int start_index = this->face.getNumVertices();
	for (float x = 128; x < 255; x += 1) {

		float next_x = x + 1;
		int index = this->face.getNumVertices();

		float angle_x = ofMap(ofNoise(noise_seed.x, x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);
		auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));

		float angle_y = ofMap(ofNoise(noise_seed.y, x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);
		auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));

		float next_angle_x = ofMap(ofNoise(noise_seed.x, next_x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);
		auto next_rotation_x = glm::rotate(glm::mat4(), next_angle_x, glm::vec3(1, 0, 0));

		float next_angle_y = ofMap(ofNoise(noise_seed.y, next_x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);
		auto next_rotation_y = glm::rotate(glm::mat4(), next_angle_y, glm::vec3(0, 1, 0));

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec4(x, 10, 0, 0) * rotation_y * rotation_x);
		vertices.push_back(glm::vec4(next_x, 10, 0, 0)* next_rotation_y* next_rotation_x);
		vertices.push_back(glm::vec4(next_x, -10, 0, 0) * next_rotation_y * next_rotation_x);
		vertices.push_back(glm::vec4(x, -10, 0, 0) * rotation_y * rotation_x);

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

		auto color = ofColor();
		auto next_color = ofColor();

		color.setHsb(ofMap((int)(x + ofGetFrameNum() * 1) % 128, 1, 128, 0, 255), 180, 255);
		next_color.setHsb(ofMap((int)(next_x + ofGetFrameNum() * 1) % 128, 1, 128, 0, 255), 180, 255);

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

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

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

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

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

	this->cam.begin();
	ofRotateY(270);

	for (int i = 0; i < 8; i++) {

		ofRotateX(45);

		this->line.drawWireframe();
		this->face.draw();
	}

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableDepthTest();

ofSetLineWidth(2);

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->line.clear();

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

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

for (float x = 128; x < 255; x += 1) {

float next_x = x + 1;

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

float angle_x = ofMap(ofNoise(noise_seed.x, x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);

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

float angle_y = ofMap(ofNoise(noise_seed.y, x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);

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

float next_angle_x = ofMap(ofNoise(noise_seed.x, next_x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);

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

float next_angle_y = ofMap(ofNoise(noise_seed.y, next_x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec4(x, 10, 0, 0) * rotation_y * rotation_x);

vertices.push_back(glm::vec4(next_x, 10, 0, 0)* next_rotation_y* next_rotation_x);

vertices.push_back(glm::vec4(next_x, -10, 0, 0) * next_rotation_y * next_rotation_x);

vertices.push_back(glm::vec4(x, -10, 0, 0) * rotation_y * rotation_x);

this->face.addVertices(vertices);

this->line.addVertices(vertices);

auto color = ofColor();

auto next_color = ofColor();

color.setHsb(ofMap((int)(x + ofGetFrameNum() * 1) % 128, 1, 128, 0, 255), 180, 255);

next_color.setHsb(ofMap((int)(next_x + ofGetFrameNum() * 1) % 128, 1, 128, 0, 255), 180, 255);

this->face.addColor(color);

this->face.addColor(next_color);

this->face.addColor(color);

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

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

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

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

}

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

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

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(270);

for (int i = 0; i < 8; i++) {

ofRotateX(45);

this->line.drawWireframe();

this->face.draw();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211225

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