junkiyoshi – ページ 2 – プログラミング de 落描き

2025年12月18日2025年12月18日

Circle by rings.

[ video ]

[ About ]
輪による円。

[ 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(25);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetLineWidth(2);
	ofEnableDepthTest();
}

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

}

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

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

	float R = 230;
	float r = 10;
	float u_span = 5;

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

	float v_span = 0.5;
	for (float v_start = 0; v_start < 360; v_start += v_span) {

		int v_end = v_start + v_span;
		float span = 0.5;

		r = ofMap(ofNoise(cos(v_start * DEG_TO_RAD) * 100, sin(v_start * DEG_TO_RAD) * 100, ofGetFrameNum() * 0.02), 0, 1, R * -0.5, R * 0.5);

		for (float v = v_start; v <= v_end; v += span) {

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

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

				line.addVertex(this->make_point(R, r, u - u_span * 0.51, v - span * 0.51));
				line.addVertex(this->make_point(R, r, u + u_span * 0.51, v - span * 0.51));
				line.addVertex(this->make_point(R, r, u + u_span * 0.51, v + span * 0.51));
				line.addVertex(this->make_point(R, r, u - u_span * 0.51, v + span * 0.51));

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

					face.addColor(ofColor(239));
					line.addColor(ofColor(39));
				}

				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();

	/*
	// ffmpeg -i img_%04d.jpg aaa.mp4
	int start = 300;
	if (ofGetFrameNum() > start) {

		std::ostringstream os;
		os << std::setw(4) << std::setfill('0') << ofGetFrameNum() - start;
		ofImage image;
		image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
		image.saveImage("image/cap/img_" + os.str() + ".jpg");
		if (ofGetFrameNum() - start >= 25 * 20) {

			std::exit(1);
		}
	}
	*/
}

//--------------------------------------------------------------
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(25);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(2);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(360 - 60);

float R = 230;

float r = 10;

float u_span = 5;

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

float v_span = 0.5;

for (float v_start = 0; v_start < 360; v_start += v_span) {

int v_end = v_start + v_span;

float span = 0.5;

r = ofMap(ofNoise(cos(v_start * DEG_TO_RAD) * 100, sin(v_start * DEG_TO_RAD) * 100, ofGetFrameNum() * 0.02), 0, 1, R * -0.5, R * 0.5);

for (float v = v_start; v <= v_end; v += span) {

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

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

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

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

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

line.addVertex(this->make_point(R, r, u - u_span * 0.51, v - span * 0.51));

line.addVertex(this->make_point(R, r, u + u_span * 0.51, v - span * 0.51));

line.addVertex(this->make_point(R, r, u + u_span * 0.51, v + span * 0.51));

line.addVertex(this->make_point(R, r, u - u_span * 0.51, v + span * 0.51));

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

face.addColor(ofColor(239));

line.addColor(ofColor(39));

}

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();

// ffmpeg -i img_%04d.jpg aaa.mp4

int start = 300;

if (ofGetFrameNum() > start) {

std::ostringstream os;

os << std::setw(4) << std::setfill('0') << ofGetFrameNum() - start;

ofImage image;

image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());

image.saveImage("image/cap/img_" + os.str() + ".jpg");

if (ofGetFrameNum() - start >= 25 * 20) {

std::exit(1);

}

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

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/DoodleDeProgramming/tree/13db75f9b3e81a5e4ee176cc29591aac221f4003

2025年12月17日

Chain Ring.

[ Video ]

[ About ]
チェーンりんぐ。

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

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

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

	ofEasyCam cam;
	float noise_step;
	int color_param;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

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

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

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

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

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

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

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

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofEasyCam cam;

float noise_step;

int color_param;

};

#include "ofApp.h"

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

	ofSetFrameRate(25);
	ofSetWindowTitle("openframeworks");

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

	this->noise_step = ofRandom(1000);
	this->color_param = 0;
}

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

	ofSeedRandom(39);

	auto param = ofGetFrameNum() % 50;
	if (param < 20) { 

		this->noise_step += 0; 
	}
	else if (param < 25) {

		this->noise_step += ofMap(param, 20, 25, 0, 0.015); 
		this->color_param += 2;
	}
	else if (param < 45) { 
		
		this->noise_step += 0.015; 
		this->color_param += 2;
	}
	else { 

		this->noise_step += ofMap(param, 45, 50, 0.015, 0);
		this->color_param += 2;
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 2.88);

	auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
	ofColor color;
	for (int i = 0; i < 32; i++) {

		ofPushMatrix();
		ofRotateZ(ofMap(ofNoise(noise_seed.z, this->noise_step + i * 0.0075), 0, 1, -360, 360));
		ofRotateY(ofMap(ofNoise(noise_seed.y, this->noise_step + i * 0.0075), 0, 1, -360, 360));
		ofRotateX(ofMap(ofNoise(noise_seed.x, this->noise_step + i * 0.0075), 0, 1, -360, 360));

		color.setHsb((i * 2 + this->color_param) % 255, 200, 255);
		ofSetColor(color);

		auto radius = ofMap(i, 0, 32, 150, 350);

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

		for (int deg = 0; deg < 360; deg++) {
		
			face.addVertex(glm::vec3() + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0));
			face.addVertex(glm::vec3() + glm::vec3((radius - 10) * cos(deg * DEG_TO_RAD), (radius - 10) * sin(deg * DEG_TO_RAD), 0));
			face.addVertex(glm::vec3() + glm::vec3((radius - 10) * cos((deg + 1) * DEG_TO_RAD), (radius - 10) * sin((deg + 1) * DEG_TO_RAD), 0));
			face.addVertex(glm::vec3() + glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), 0));

			face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 4);
			face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4);

			face.addColor(ofColor(color, 64));
			face.addColor(ofColor(color, 64));
			face.addColor(ofColor(color, 64));
			face.addColor(ofColor(color, 64));

			line.addVertex(glm::vec3() + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0));
			line.addVertex(glm::vec3() + glm::vec3((radius - 5) * cos(deg * DEG_TO_RAD), (radius - 5) * sin(deg * DEG_TO_RAD), 0));
			line.addVertex(glm::vec3() + glm::vec3((radius - 5) * cos((deg + 1) * DEG_TO_RAD), (radius - 5) * sin((deg + 1) * DEG_TO_RAD), 0));
			line.addVertex(glm::vec3() + glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), 0));

			line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 4);
			line.addIndex(line.getNumVertices() - 2); line.addIndex(line.getNumVertices() - 3);

			line.addColor(color);
			line.addColor(color);
			line.addColor(color);
			line.addColor(color);
		}

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

		ofPopMatrix();
	}

	this->cam.end();

	/*
	// ffmpeg -i img_%04d.jpg aaa.mp4
	int start = 300;
	if (ofGetFrameNum() > start) {

		std::ostringstream os;
		os << std::setw(4) << std::setfill('0') << ofGetFrameNum() - start;
		ofImage image;
		image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
		image.saveImage("image/cap/img_" + os.str() + ".jpg");
		if (ofGetFrameNum() - start >= 25 * 20) {

			std::exit(1);
		}
	}
	*/
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openframeworks");

ofBackground(39);

ofSetColor(239);

ofSetCircleResolution(60);

ofNoFill();

ofEnableDepthTest();

this->noise_step = ofRandom(1000);

this->color_param = 0;

}

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

void ofApp::update() {

ofSeedRandom(39);

auto param = ofGetFrameNum() % 50;

if (param < 20) {

this->noise_step += 0;

}

else if (param < 25) {

this->noise_step += ofMap(param, 20, 25, 0, 0.015);

this->color_param += 2;

}

else if (param < 45) {

this->noise_step += 0.015;

this->color_param += 2;

}

else {

this->noise_step += ofMap(param, 45, 50, 0.015, 0);

this->color_param += 2;

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 2.88);

auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

ofColor color;

for (int i = 0; i < 32; i++) {

ofPushMatrix();

ofRotateZ(ofMap(ofNoise(noise_seed.z, this->noise_step + i * 0.0075), 0, 1, -360, 360));

ofRotateY(ofMap(ofNoise(noise_seed.y, this->noise_step + i * 0.0075), 0, 1, -360, 360));

ofRotateX(ofMap(ofNoise(noise_seed.x, this->noise_step + i * 0.0075), 0, 1, -360, 360));

color.setHsb((i * 2 + this->color_param) % 255, 200, 255);

ofSetColor(color);

auto radius = ofMap(i, 0, 32, 150, 350);

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

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

face.addVertex(glm::vec3() + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0));

face.addVertex(glm::vec3() + glm::vec3((radius - 10) * cos(deg * DEG_TO_RAD), (radius - 10) * sin(deg * DEG_TO_RAD), 0));

face.addVertex(glm::vec3() + glm::vec3((radius - 10) * cos((deg + 1) * DEG_TO_RAD), (radius - 10) * sin((deg + 1) * DEG_TO_RAD), 0));

face.addVertex(glm::vec3() + glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), 0));

face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 4);

face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4);

face.addColor(ofColor(color, 64));

line.addVertex(glm::vec3() + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0));

line.addVertex(glm::vec3() + glm::vec3((radius - 5) * cos(deg * DEG_TO_RAD), (radius - 5) * sin(deg * DEG_TO_RAD), 0));

line.addVertex(glm::vec3() + glm::vec3((radius - 5) * cos((deg + 1) * DEG_TO_RAD), (radius - 5) * sin((deg + 1) * DEG_TO_RAD), 0));

line.addVertex(glm::vec3() + glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), 0));

line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 4);

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

line.addColor(color);

}

face.draw();

line.draw();

ofPopMatrix();

}

this->cam.end();

// ffmpeg -i img_%04d.jpg aaa.mp4

int start = 300;

if (ofGetFrameNum() > start) {

std::ostringstream os;

os << std::setw(4) << std::setfill('0') << ofGetFrameNum() - start;

ofImage image;

image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());

image.saveImage("image/cap/img_" + os.str() + ".jpg");

if (ofGetFrameNum() - start >= 25 * 20) {

std::exit(1);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/DoodleDeProgramming/tree/22be7925b9da82bd97bf5485a97dff5c3f51dedd

2025年12月16日

Pause and think.

[ Video ]

[ About ]
立ち止まって考える。

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

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

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

	ofEasyCam cam;
	float noise_step;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

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

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

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

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

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

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

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

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofEasyCam cam;

float noise_step;

};

#include "ofApp.h"

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

	ofSetFrameRate(25);
	ofSetWindowTitle("openframeworks");

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

	this->noise_step = ofRandom(1000);
}

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

	ofSeedRandom(39);

	auto param = ofGetFrameNum() % 50;
	if (param < 20) { this->noise_step += 0; }
	else if (param < 25) { this->noise_step += ofMap(param, 20, 25, 0, 0.015); }
	else if (param < 45) { this->noise_step += 0.015; }
	else { this->noise_step += ofMap(param, 45, 50, 0.015, 0); }
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 2.88);

	auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
	for (int i = 0; i < 32; i++) {

		ofPushMatrix();
		ofRotateZ(ofMap(ofNoise(noise_seed.z, this->noise_step + i * 0.0075), 0, 1, -360, 360));
		ofRotateY(ofMap(ofNoise(noise_seed.y, this->noise_step + i * 0.0075), 0, 1, -360, 360));
		ofRotateX(ofMap(ofNoise(noise_seed.x, this->noise_step + i * 0.0075), 0, 1, -360, 360));

		ofSetLineWidth(ofMap(i, 0, 32, 1, 5));
		ofDrawCircle(glm::vec3(), ofMap(i, 0, 32, 150, 250));

		ofPopMatrix();
	}

	this->cam.end();

	/*
	// ffmpeg -i img_%04d.jpg aaa.mp4
	int start = 250;
	if (ofGetFrameNum() > start) {

		std::ostringstream os;
		os << std::setw(4) << std::setfill('0') << ofGetFrameNum() - start;
		ofImage image;
		image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
		image.saveImage("image/cap/img_" + os.str() + ".jpg");
		if (ofGetFrameNum() - start >= 25 * 20) {

			std::exit(1);
		}
	}
	*/
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetCircleResolution(60);

ofNoFill();

ofEnableDepthTest();

this->noise_step = ofRandom(1000);

}

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

void ofApp::update() {

ofSeedRandom(39);

auto param = ofGetFrameNum() % 50;

if (param < 20) { this->noise_step += 0; }

else if (param < 25) { this->noise_step += ofMap(param, 20, 25, 0, 0.015); }

else if (param < 45) { this->noise_step += 0.015; }

else { this->noise_step += ofMap(param, 45, 50, 0.015, 0); }

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 2.88);

auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

for (int i = 0; i < 32; i++) {

ofPushMatrix();

ofRotateZ(ofMap(ofNoise(noise_seed.z, this->noise_step + i * 0.0075), 0, 1, -360, 360));

ofRotateY(ofMap(ofNoise(noise_seed.y, this->noise_step + i * 0.0075), 0, 1, -360, 360));

ofRotateX(ofMap(ofNoise(noise_seed.x, this->noise_step + i * 0.0075), 0, 1, -360, 360));

ofSetLineWidth(ofMap(i, 0, 32, 1, 5));

ofDrawCircle(glm::vec3(), ofMap(i, 0, 32, 150, 250));

ofPopMatrix();

}

this->cam.end();

// ffmpeg -i img_%04d.jpg aaa.mp4

int start = 250;

if (ofGetFrameNum() > start) {

std::ostringstream os;

os << std::setw(4) << std::setfill('0') << ofGetFrameNum() - start;

ofImage image;

image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());

image.saveImage("image/cap/img_" + os.str() + ".jpg");

if (ofGetFrameNum() - start >= 25 * 20) {

std::exit(1);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/DoodleDeProgramming/tree/187ce4cda8507100a50d31f6fbd3d5a7e406d563

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