プログラミング de 落描き – ページ 3 – クリエイティブ・コーディングによる生成物とソース

2025年4月20日

Barber pole.

[ Video ]

[ About ]
床屋のサインポール

[ 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(25);
	ofSetWindowTitle("openFrameworks");

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

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

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

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

	auto radius = 200;
	for (int i = 0; i < 2; i++) {

		for (int z = -600; z <= 600; z += 1) {

			auto deg = ofMap(ofNoise(z * 0.0006 + ofGetFrameNum() * 0.015), 0, 1, -720, 720);
			deg += i % 2 == 0 ? 0 : 180;
			auto location_1 = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z);
			auto location_2 = glm::vec3(radius * cos((deg + 30) * DEG_TO_RAD), radius * sin((deg + 10) * DEG_TO_RAD), z);

			this->face.addVertex(location_1);
			this->face.addVertex(location_2);

			this->line.addVertex(location_1);
			this->line.addVertex(location_2);

			this->face.addColor(i % 2 == 0 ? ofColor(239, 39, 39) : ofColor(39, 39, 239));
			this->face.addColor(i % 2 == 0 ? ofColor(239, 39, 39) : ofColor(39, 39, 239));

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

			if (z > -600) {

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

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

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

				this->line.addIndex(this->line.getNumVertices() - 2);
				this->line.addIndex(this->line.getNumVertices() - 4);
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateX(90);

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

	this->cam.end();

	/*
	int start = 300 + 35;
	if (ofGetFrameNum() > start) {

		ostringstream os;
		os << setw(4) << 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);

ofSetLineWidth(2);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

this->face.clear();

this->line.clear();

auto radius = 200;

for (int i = 0; i < 2; i++) {

for (int z = -600; z <= 600; z += 1) {

auto deg = ofMap(ofNoise(z * 0.0006 + ofGetFrameNum() * 0.015), 0, 1, -720, 720);

deg += i % 2 == 0 ? 0 : 180;

auto location_1 = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z);

auto location_2 = glm::vec3(radius * cos((deg + 30) * DEG_TO_RAD), radius * sin((deg + 10) * DEG_TO_RAD), z);

this->face.addVertex(location_1);

this->face.addVertex(location_2);

this->line.addVertex(location_1);

this->line.addVertex(location_2);

this->face.addColor(i % 2 == 0 ? ofColor(239, 39, 39) : ofColor(39, 39, 239));

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

if (z > -600) {

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

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

this->face.addIndex(this->face.getNumVertices() - 4);

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

this->face.addIndex(this->face.getNumVertices() - 3);

this->face.addIndex(this->face.getNumVertices() - 4);

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

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

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

this->line.addIndex(this->line.getNumVertices() - 4);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(90);

this->face.draw();

this->line.drawWireframe();

this->cam.end();

int start = 300 + 35;

if (ofGetFrameNum() > start) {

ostringstream os;

os << setw(4) << 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/Insta20250420

2025年4月19日2025年4月19日

Twin Arrows.

[ Video ]

[ About ]
ツイン・やじるし。

[ 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;

	void draw_arrow(glm::vec3 location, glm::vec3 next_location, float size, ofColor fill_color, ofColor no_fill_color);
};

#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;

void draw_arrow(glm::vec3 location, glm::vec3 next_location, float size, ofColor fill_color, ofColor no_fill_color);

};

#include "ofApp.h"

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

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

	ofBackground(39);
	ofSetLineWidth(0.2);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateY(25);

	auto noise_seed = ofRandom(1000);
	for (int radius = 200; radius <= 300; radius += 2) {

		ofPushMatrix();
		ofRotateZ(ofMap(ofNoise(noise_seed, radius * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -90, 90));
		ofRotateY(radius * 5 + ofGetFrameNum() * 3);

		auto size = ofMap(radius, 200, 300, 5, 30);
		this->draw_arrow(glm::vec3(0, 0, radius), glm::vec3(1, 0, radius), size, ofColor(0), ofColor(255));

		ofPopMatrix();
	}

	noise_seed = ofRandom(1000);
	for (int radius = 201; radius <= 301; radius += 2) {

		ofPushMatrix();
		ofRotateZ(ofMap(ofNoise(noise_seed, radius * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -90, 90));
		ofRotateY(radius * 5 + ofGetFrameNum() * 3);

		auto size = ofMap(radius, 200, 300, 5, 30);
		this->draw_arrow(glm::vec3(0, 0, radius), glm::vec3(1, 0, radius), size, ofColor(255), ofColor(0));

		ofPopMatrix();
	}

	this->cam.end();

	/*
	int start = 90;
	if (ofGetFrameNum() > start) {

		ostringstream os;
		os << setw(4) << 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);
		}
	}
	*/
}

//--------------------------------------------------------------
void ofApp::draw_arrow(glm::vec3 location, glm::vec3 next_location, float size, ofColor fill_color, ofColor no_fill_color) {

	auto angle = std::atan2(next_location.y - location.y, next_location.x - location.x);

	ofSetColor(fill_color);
	ofFill();
	ofBeginShape();
	ofVertex(glm::vec3(size * 0.8 * cos(angle), size * 0.8 * sin(angle), 0) + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) + location);
	ofEndShape(true);

	ofBeginShape();
	ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 + location);
	ofEndShape(true);

	ofSetColor(no_fill_color);
	ofNoFill();
	ofSetLineWidth(3);
	ofBeginShape();
	ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) + location);
	ofVertex(glm::vec3(size * 0.8 * cos(angle), size * 0.8 * sin(angle), 0) + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 + location);
	ofEndShape();

	ofBeginShape();
	ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 + location);
	ofEndShape();
}

//--------------------------------------------------------------
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(39);

ofSetLineWidth(0.2);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(25);

auto noise_seed = ofRandom(1000);

for (int radius = 200; radius <= 300; radius += 2) {

ofPushMatrix();

ofRotateZ(ofMap(ofNoise(noise_seed, radius * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -90, 90));

ofRotateY(radius * 5 + ofGetFrameNum() * 3);

auto size = ofMap(radius, 200, 300, 5, 30);

this->draw_arrow(glm::vec3(0, 0, radius), glm::vec3(1, 0, radius), size, ofColor(0), ofColor(255));

ofPopMatrix();

}

noise_seed = ofRandom(1000);

for (int radius = 201; radius <= 301; radius += 2) {

ofPushMatrix();

ofRotateZ(ofMap(ofNoise(noise_seed, radius * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -90, 90));

ofRotateY(radius * 5 + ofGetFrameNum() * 3);

auto size = ofMap(radius, 200, 300, 5, 30);

this->draw_arrow(glm::vec3(0, 0, radius), glm::vec3(1, 0, radius), size, ofColor(255), ofColor(0));

ofPopMatrix();

}

this->cam.end();

int start = 90;

if (ofGetFrameNum() > start) {

ostringstream os;

os << setw(4) << 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);

}

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

void ofApp::draw_arrow(glm::vec3 location, glm::vec3 next_location, float size, ofColor fill_color, ofColor no_fill_color) {

auto angle = std::atan2(next_location.y - location.y, next_location.x - location.x);

ofSetColor(fill_color);

ofFill();

ofBeginShape();

ofVertex(glm::vec3(size * 0.8 * cos(angle), size * 0.8 * sin(angle), 0) + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) + location);

ofEndShape(true);

ofBeginShape();

ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 + location);

ofEndShape(true);

ofSetColor(no_fill_color);

ofNoFill();

ofSetLineWidth(3);

ofBeginShape();

ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) + location);

ofVertex(glm::vec3(size * 0.8 * cos(angle), size * 0.8 * sin(angle), 0) + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 + location);

ofEndShape();

ofBeginShape();

ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 + location);

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20250419

2025年4月18日

Arrow chain.

[ Video ]

[ About ]
矢印チェーン。

[ 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;

	void draw_arrow(glm::vec3 location, glm::vec3 next_location, float size, ofColor fill_color, ofColor no_fill_color);
};

#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;

void draw_arrow(glm::vec3 location, glm::vec3 next_location, float size, ofColor fill_color, ofColor no_fill_color);

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 1.44);

	for (int radius = 200; radius <= 300; radius += 2) {

		ofPushMatrix();
		ofRotateZ(ofMap(ofNoise(radius * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -360, 360));
		ofRotateY(radius * 5 + ofGetFrameNum() * 3);

		this->draw_arrow(glm::vec3(0, 0, radius), glm::vec3(1, 0, radius), 30, ofColor(0), ofColor(255));

		ofNoFill();
		ofSetColor(0, 128);
		ofSetLineWidth(0.5);
		ofBeginShape();
		for (int deg = 0; deg < 360; deg += 3) {

			ofVertex(glm::vec3((radius - 3) * cos(deg * DEG_TO_RAD), 0, (radius - 3) * sin(deg * DEG_TO_RAD)));
		}
		ofEndShape(true);

		ofPopMatrix();
	}

	this->cam.end();

	/*
	int start = 50;
	if (ofGetFrameNum() > start) {

		ostringstream os;
		os << setw(4) << 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);
		}
	}
	*/
}

//--------------------------------------------------------------
void ofApp::draw_arrow(glm::vec3 location, glm::vec3 next_location, float size, ofColor fill_color, ofColor no_fill_color) {

	auto angle = std::atan2(next_location.y - location.y, next_location.x - location.x);

	ofSetColor(fill_color);
	ofFill();
	ofBeginShape();
	ofVertex(glm::vec3(size * 0.8 * cos(angle), size * 0.8 * sin(angle), 0) + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) + location);
	ofEndShape(true);

	ofBeginShape();
	ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 + location);
	ofEndShape(true);

	ofSetColor(no_fill_color);
	ofNoFill();
	ofSetLineWidth(3);
	ofBeginShape();
	ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) + location);
	ofVertex(glm::vec3(size * 0.8 * cos(angle), size * 0.8 * sin(angle), 0) + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 + location);
	ofEndShape();

	ofBeginShape();
	ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);
	ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 + location);
	ofEndShape();
}

//--------------------------------------------------------------
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(239);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 1.44);

for (int radius = 200; radius <= 300; radius += 2) {

ofPushMatrix();

ofRotateZ(ofMap(ofNoise(radius * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -360, 360));

ofRotateY(radius * 5 + ofGetFrameNum() * 3);

this->draw_arrow(glm::vec3(0, 0, radius), glm::vec3(1, 0, radius), 30, ofColor(0), ofColor(255));

ofNoFill();

ofSetColor(0, 128);

ofSetLineWidth(0.5);

ofBeginShape();

for (int deg = 0; deg < 360; deg += 3) {

ofVertex(glm::vec3((radius - 3) * cos(deg * DEG_TO_RAD), 0, (radius - 3) * sin(deg * DEG_TO_RAD)));

}

ofEndShape(true);

ofPopMatrix();

}

this->cam.end();

int start = 50;

if (ofGetFrameNum() > start) {

ostringstream os;

os << setw(4) << 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);

}

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

void ofApp::draw_arrow(glm::vec3 location, glm::vec3 next_location, float size, ofColor fill_color, ofColor no_fill_color) {

auto angle = std::atan2(next_location.y - location.y, next_location.x - location.x);

ofSetColor(fill_color);

ofFill();

ofBeginShape();

ofVertex(glm::vec3(size * 0.8 * cos(angle), size * 0.8 * sin(angle), 0) + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) + location);

ofEndShape(true);

ofBeginShape();

ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 + location);

ofEndShape(true);

ofSetColor(no_fill_color);

ofNoFill();

ofSetLineWidth(3);

ofBeginShape();

ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) + location);

ofVertex(glm::vec3(size * 0.8 * cos(angle), size * 0.8 * sin(angle), 0) + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 + location);

ofEndShape();

ofBeginShape();

ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5), 0) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);

ofVertex(glm::vec3(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5), 0) * 0.25 + location);

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20250418

2025年4月
月	火	水	木	金	土	日
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