openFrameworks – ページ 390 – プログラミング de 落描き

2021年9月6日2021年9月6日

Switching big and small. Draw by openFrameworks

[ Video ]

[ About ]
ofxBox2の大きいサークルと小さいサークルの挙動の違いを見比べて楽しむ。

Enjoy comparing the differences in behavior between the large and small circles ofxBox2.

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxBox2d.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;

	ofxBox2d box2d;
	vector<shared_ptr<ofxBox2dCircle>> circle_list;
	vector<float> radius_list;
	vector<float> life_list;
	vector<ofColor> color_list;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.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;

ofxBox2d box2d;

vector<shared_ptr<ofxBox2dCircle>> circle_list;

vector<float> radius_list;

vector<float> life_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);

	this->box2d.init();
	this->box2d.setGravity(0, 50);
	this->box2d.createBounds();
	this->box2d.setFPS(60);
	this->box2d.registerGrabbing();
}

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

	vector<ofColor> base_color_list;
	ofColor color;
	vector<int> hex_list = { 0x247BA0, 0x70C1B3, 0xB2DBBF, 0xF3FFBD, 0xFF1654 };
	for (auto hex : hex_list) {

		color.setHex(hex);
		base_color_list.push_back(color);
	}

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

		this->life_list[i] -= 1;

		if (this->life_list[i] < 0) {

			this->circle_list.erase(this->circle_list.begin() + i);
			this->radius_list.erase(this->radius_list.begin() + i);
			this->life_list.erase(this->life_list.begin() + i);
			this->color_list.erase(this->color_list.begin() + i);
		}
	}

	if (ofGetFrameNum() % 240 < 120) {

		for (int i = 0; i < 5; i++) {

			auto radius = ofRandom(2, 5);

			auto circle = make_shared<ofxBox2dCircle>();
			circle->setPhysics(0.5, 0.03, 0.1);
			circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth() * 0.35 - radius, ofGetWidth() * 0.35 + radius), 100 + radius, radius);
			circle->setRotation(ofRandom(360));
			this->circle_list.push_back(circle);
			this->radius_list.push_back(radius);
			this->life_list.push_back(250);

			this->color_list.push_back(base_color_list[ofRandom(base_color_list.size())]);
		}

	} else {

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

			auto radius = ofRandom(5, 10);

			auto circle = make_shared<ofxBox2dCircle>();
			circle->setPhysics(0.5, 0.03, 0.1);
			circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth() * 0.65 - radius, ofGetWidth() * 0.65 + radius), 100 + radius, radius);
			circle->setRotation(ofRandom(360));
			this->circle_list.push_back(circle);
			this->radius_list.push_back(radius);
			this->life_list.push_back(250);

			this->color_list.push_back(base_color_list[ofRandom(base_color_list.size())]);
		}
	}

	this->box2d.update();
}

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

	this->cam.begin();
	ofRotateX(180);
	ofTranslate(ofGetWidth() * -0.5, ofGetHeight() * -0.5);

	ofSetLineWidth(1);
	for (int i = 0; i < this->circle_list.size(); i++) {

		ofFill();
		ofSetColor(this->color_list[i]);
		ofDrawCircle(glm::vec2(this->circle_list[i]->getPosition()), this->radius_list[i]);

		ofNoFill();
		ofSetColor(39);
		ofDrawCircle(glm::vec2(this->circle_list[i]->getPosition()), this->radius_list[i]);

	}

	ofSetLineWidth(3);
	ofSetColor(39);
	ofDrawRectangle(0, 0, 720, 720);

	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(239);

this->box2d.init();

this->box2d.setGravity(0, 50);

this->box2d.createBounds();

this->box2d.setFPS(60);

this->box2d.registerGrabbing();

}

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

void ofApp::update() {

vector<ofColor> base_color_list;

ofColor color;

vector<int> hex_list = { 0x247BA0, 0x70C1B3, 0xB2DBBF, 0xF3FFBD, 0xFF1654 };

for (auto hex : hex_list) {

color.setHex(hex);

base_color_list.push_back(color);

}

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

this->life_list[i] -= 1;

if (this->life_list[i] < 0) {

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

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

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

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

}

if (ofGetFrameNum() % 240 < 120) {

for (int i = 0; i < 5; i++) {

auto radius = ofRandom(2, 5);

auto circle = make_shared<ofxBox2dCircle>();

circle->setPhysics(0.5, 0.03, 0.1);

circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth() * 0.35 - radius, ofGetWidth() * 0.35 + radius), 100 + radius, radius);

circle->setRotation(ofRandom(360));

this->circle_list.push_back(circle);

this->radius_list.push_back(radius);

this->life_list.push_back(250);

this->color_list.push_back(base_color_list[ofRandom(base_color_list.size())]);

}

} else {

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

auto radius = ofRandom(5, 10);

auto circle = make_shared<ofxBox2dCircle>();

circle->setPhysics(0.5, 0.03, 0.1);

circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth() * 0.65 - radius, ofGetWidth() * 0.65 + radius), 100 + radius, radius);

circle->setRotation(ofRandom(360));

this->circle_list.push_back(circle);

this->radius_list.push_back(radius);

this->life_list.push_back(250);

this->color_list.push_back(base_color_list[ofRandom(base_color_list.size())]);

}

this->box2d.update();

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

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

ofSetLineWidth(1);

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

ofFill();

ofSetColor(this->color_list[i]);

ofDrawCircle(glm::vec2(this->circle_list[i]->getPosition()), this->radius_list[i]);

ofNoFill();

ofSetColor(39);

ofDrawCircle(glm::vec2(this->circle_list[i]->getPosition()), this->radius_list[i]);

}

ofSetLineWidth(3);

ofSetColor(39);

ofDrawRectangle(0, 0, 720, 720);

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210906

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2021年9月5日

Twin color ribbon and sphere. Draw by openFrameworks

[ Video ]

[ About ]
真ん中の球体はリボンとの距離を比較して色を変える。

The sphere in the middle changes color based on its distance from the ribbon.

if (glm::distance(avg, this->red_location) > glm::distance(avg, this->blue_location)) {

	this->sphere_face.addColor(ofColor(0, 203, 255));
	this->sphere_face.addColor(ofColor(0, 203, 255));
	this->sphere_face.addColor(ofColor(0, 203, 255));
}
else{
	this->sphere_face.addColor(ofColor(255, 0, 153));
	this->sphere_face.addColor(ofColor(255, 0, 153));
	this->sphere_face.addColor(ofColor(255, 0, 153));
}

if (glm::distance(avg, this->red_location) > glm::distance(avg, this->blue_location)) {

this->sphere_face.addColor(ofColor(0, 203, 255));

}

else{

this->sphere_face.addColor(ofColor(255, 0, 153));

}

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp { 
<pre class="lang:default decode:true " title="ofApp.cpp" >#include "ofApp.h"

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

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

	ofBackground(239);
	ofNoFill();
	ofSetColor(39);
	ofEnableDepthTest();
	ofSetCircleResolution(60);
	ofSetLineWidth(2);

		auto ico_sphere = ofIcoSpherePrimitive(80, 5);
	this->triangle_list.insert(this->triangle_list.end(), ico_sphere.getMesh().getUniqueFaces().begin(), ico_sphere.getMesh().getUniqueFaces().end());

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

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

	ofSeedRandom(39);

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

	float x_span = 1;
	auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

	for (int x_param = -1; x_param <= 1; x_param += 2) {

		int start_index = this->face.getNumVertices();
		for (float x = 100; x < 250; x += x_span) {

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

			float angle_x = ofMap(ofNoise(noise_seed.x, x * 0.0035 + ofGetFrameNum() * 0.0085), 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() * 0.0085), 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() * 0.0085), 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() * 0.0085), 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 * x_param, 20, 0, 0) * rotation_y * rotation_x);
			vertices.push_back(glm::vec4(next_x * x_param, 20, 0, 0)* next_rotation_y* next_rotation_x);
			vertices.push_back(glm::vec4(next_x * x_param, -20, 0, 0) * next_rotation_y * next_rotation_x);
			vertices.push_back(glm::vec4(x * x_param, -20, 0, 0) * rotation_y * rotation_x);


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

			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);

			if (x_param == -1) {
				
				this->face.addColor(ofColor(255, 0, 153));
				this->face.addColor(ofColor(255, 0, 153));
				this->face.addColor(ofColor(255, 0, 153));
				this->face.addColor(ofColor(255, 0, 153));
			}else{

				this->face.addColor(ofColor(0, 203, 255));
				this->face.addColor(ofColor(0, 203, 255));
				this->face.addColor(ofColor(0, 203, 255));
				this->face.addColor(ofColor(0, 203, 255));
			}

			if (x == 100 && x_param == -1) {

				this->red_location = (vertices[0] + vertices[3]) / 2;
			}

			if (x == 100 && x_param == 1) {

				this->blue_location = (vertices[0] + vertices[3]) / 2;
			}

		}

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

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

		vector<glm::vec3> vertices;

		glm::vec3 avg = (this->triangle_list[i].getVertex(0) + this->triangle_list[i].getVertex(1) + this->triangle_list[i].getVertex(2)) / 3;
		vertices.push_back(this->triangle_list[i].getVertex(0));
		vertices.push_back(this->triangle_list[i].getVertex(1));
		vertices.push_back(this->triangle_list[i].getVertex(2));

		this->sphere_face.addVertices(vertices);
		this->sphere_line.addVertices(vertices);

		if (glm::distance(avg, this->red_location) > glm::distance(avg, this->blue_location)) {

			this->sphere_face.addColor(ofColor(0, 203, 255));
			this->sphere_face.addColor(ofColor(0, 203, 255));
			this->sphere_face.addColor(ofColor(0, 203, 255));
		}
		else{

			this->sphere_face.addColor(ofColor(255, 0, 153));
			this->sphere_face.addColor(ofColor(255, 0, 153));
			this->sphere_face.addColor(ofColor(255, 0, 153));
		}

		this->sphere_line.addColor(ofColor(239));
		this->sphere_line.addColor(ofColor(239));
		this->sphere_line.addColor(ofColor(239));

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

		this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 1); this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 2);
		this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 2); this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 3);
		this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 1); this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 3);
	}
}

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

	this->cam.begin();

	ofDrawCircle(glm::vec3(), 81);

	ofRotateX(ofGetFrameNum() * 0.37);
	ofRotateY(ofGetFrameNum() * 0.72);

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

	this->sphere_face.draw();
	//this->sphere_line.drawWireframe();


	this->cam.end();
}

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

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

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#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

<pre class="lang:default decode:true " title="ofApp.cpp" >#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofNoFill();

ofSetColor(39);

ofEnableDepthTest();

ofSetCircleResolution(60);

ofSetLineWidth(2);

auto ico_sphere = ofIcoSpherePrimitive(80, 5);

this->triangle_list.insert(this->triangle_list.end(), ico_sphere.getMesh().getUniqueFaces().begin(), ico_sphere.getMesh().getUniqueFaces().end());

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

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->line.clear();

this->sphere_face.clear();

this->sphere_line.clear();

float x_span = 1;

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

for (int x_param = -1; x_param <= 1; x_param += 2) {

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

for (float x = 100; x < 250; x += x_span) {

float next_x = x + x_span;

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

float angle_x = ofMap(ofNoise(noise_seed.x, x * 0.0035 + ofGetFrameNum() * 0.0085), 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() * 0.0085), 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() * 0.0085), 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() * 0.0085), 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 * x_param, 20, 0, 0) * rotation_y * rotation_x);

vertices.push_back(glm::vec4(next_x * x_param, 20, 0, 0)* next_rotation_y* next_rotation_x);

vertices.push_back(glm::vec4(next_x * x_param, -20, 0, 0) * next_rotation_y * next_rotation_x);

vertices.push_back(glm::vec4(x * x_param, -20, 0, 0) * rotation_y * rotation_x);

this->face.addVertices(vertices);

this->line.addVertices(vertices);

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);

if (x_param == -1) {

this->face.addColor(ofColor(255, 0, 153));

}else{

this->face.addColor(ofColor(0, 203, 255));

}

if (x == 100 && x_param == -1) {

this->red_location = (vertices[0] + vertices[3]) / 2;

}

if (x == 100 && x_param == 1) {

this->blue_location = (vertices[0] + vertices[3]) / 2;

}

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

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

}

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

vector<glm::vec3> vertices;

glm::vec3 avg = (this->triangle_list[i].getVertex(0) + this->triangle_list[i].getVertex(1) + this->triangle_list[i].getVertex(2)) / 3;

vertices.push_back(this->triangle_list[i].getVertex(0));

vertices.push_back(this->triangle_list[i].getVertex(1));

vertices.push_back(this->triangle_list[i].getVertex(2));

this->sphere_face.addVertices(vertices);

this->sphere_line.addVertices(vertices);

if (glm::distance(avg, this->red_location) > glm::distance(avg, this->blue_location)) {

this->sphere_face.addColor(ofColor(0, 203, 255));

}

else{

this->sphere_face.addColor(ofColor(255, 0, 153));

}

this->sphere_line.addColor(ofColor(239));

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

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

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

this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 1); this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 3);

}

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

void ofApp::draw() {

this->cam.begin();

ofDrawCircle(glm::vec3(), 81);

ofRotateX(ofGetFrameNum() * 0.37);

ofRotateY(ofGetFrameNum() * 0.72);

this->face.draw();

this->line.drawWireframe();

this->sphere_face.draw();

//this->sphere_line.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

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, sphere_face, sphere_line;
vector<ofMeshFace> triangle_list;

glm::vec3 blue_location;
glm::vec3 red_location;
};

[ Link ]
https://github.com/junkiyoshi/Insta20210905

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2021年9月4日

Gradation circle. Draw by openFrameworks

[ Video ]

[ About ]
ノイズに渡す引数の間隔を変える。

Change the interval of arguments passed to noise.

[ 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;
};

#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;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();

	float deg_span = 0.1;
	float noise_span = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 0.0001, 0.025);
	for (float radius = 50; radius <= 200; radius += 50) {

		ofMesh face, line;
		line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
		for (float deg = 0; deg < 360; deg += deg_span) {

			int index = face.getNumVertices() - 2;

			auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
			auto noise_value = ofNoise(glm::vec3(location * noise_span, ofGetFrameNum() * 0.0001));
			float z = noise_value < 0.45 ? 1 : noise_value < 0.65 ? ofMap(noise_value, 0.45, 0.65, 0, 50) : 50;

			face.addVertex(glm::vec3(location, -z));
			face.addVertex(glm::vec3(location, z));

			line.addVertex(glm::vec3(location, -z));
			line.addVertex(glm::vec3(location, z));

			ofColor color;
			color.setHsb((int)ofMap(deg, 0, 360, 0, 255 * 3) % 255, 255, 255);

			face.addColor(color);
			face.addColor(color);

			if (index > -1) {

				face.addIndex(index); face.addIndex(index + 1); face.addIndex(index + 3);
				face.addIndex(index); face.addIndex(index + 2); face.addIndex(index + 3);

				line.addIndex(index); line.addIndex(index + 2);
				line.addIndex(index + 1); line.addIndex(index + 3);
			}
		}

		face.addIndex(0); face.addIndex(1); face.addIndex(face.getNumVertices() - 2);
		face.addIndex(1); face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2);

		line.addIndex(0); line.addIndex(line.getNumVertices() - 2);
		line.addIndex(1); line.addIndex(line.getNumVertices() - 1);

		face.draw();

		ofSetColor(39);
		line.drawWireframe();
	}


	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);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

float deg_span = 0.1;

float noise_span = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 0.0001, 0.025);

for (float radius = 50; radius <= 200; radius += 50) {

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

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

int index = face.getNumVertices() - 2;

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

auto noise_value = ofNoise(glm::vec3(location * noise_span, ofGetFrameNum() * 0.0001));

float z = noise_value < 0.45 ? 1 : noise_value < 0.65 ? ofMap(noise_value, 0.45, 0.65, 0, 50) : 50;

face.addVertex(glm::vec3(location, -z));

face.addVertex(glm::vec3(location, z));

line.addVertex(glm::vec3(location, -z));

line.addVertex(glm::vec3(location, z));

ofColor color;

color.setHsb((int)ofMap(deg, 0, 360, 0, 255 * 3) % 255, 255, 255);

face.addColor(color);

if (index > -1) {

face.addIndex(index); face.addIndex(index + 1); face.addIndex(index + 3);

face.addIndex(index); face.addIndex(index + 2); face.addIndex(index + 3);

line.addIndex(index); line.addIndex(index + 2);

line.addIndex(index + 1); line.addIndex(index + 3);

}

face.addIndex(0); face.addIndex(1); face.addIndex(face.getNumVertices() - 2);

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

line.addIndex(0); line.addIndex(line.getNumVertices() - 2);

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

face.draw();

ofSetColor(39);

line.drawWireframe();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210904

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