プログラミング de 落描き – ページ 17 – 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9月22日

Ameba box.

[ Video ]

[ About ]
アメーバ箱。

[ 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(39);
	ofSetColor(239);
	ofEnableDepthTest();
	ofNoFill();

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

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

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

	float span = 1;
	float threshold_1 = 0.43;
	float threshold_2 = 0.57;
	float noise_param = 0.008;

	ofColor face_color(39);
	ofColor line_color(239);

	for (float x = 0; x <= 400; x += span) {

		for (float y = 0; y <= 400; y += span) {

			for (float z = -200; z <= 0; z += span * 20) {

				line_color = ofColor(ofMap(z, -200, 0, 39, 239));

				auto noise_value = ofNoise(x * noise_param, y * noise_param, z * noise_param * 0.75 - ofGetFrameNum() * 0.01);

				if (noise_value < threshold_1 || noise_value > threshold_2) { continue; }

				auto noise_value_1 = ofNoise((x - span) * noise_param, y * noise_param, z * noise_param * 0.75 - ofGetFrameNum() * 0.01);
				auto noise_value_2 = ofNoise(x * noise_param, (y + span) * noise_param, z * noise_param * 0.75 - ofGetFrameNum() * 0.01);
				auto noise_value_3 = ofNoise((x + span) * noise_param, y * noise_param, z * noise_param * 0.75 - ofGetFrameNum() * 0.01);
				auto noise_value_4 = ofNoise(x * noise_param, (y - span) * noise_param, z * noise_param * 0.75 - ofGetFrameNum() * 0.01);


				auto index = this->face.getNumVertices();
				vector<glm::vec3> vertices;

				vertices.push_back(glm::vec3(x - span * 0.5, y - span * 0.5, z));
				vertices.push_back(glm::vec3(x - span * 0.5, y + span * 0.5, z));
				vertices.push_back(glm::vec3(x + span * 0.5, y + span * 0.5, z));
				vertices.push_back(glm::vec3(x + span * 0.5, y - span * 0.5, z));

				this->face.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->face.addColor(face_color);
				this->face.addColor(face_color);
				this->face.addColor(face_color);
				this->face.addColor(face_color);

				if (noise_value_1 < threshold_1 || noise_value_1 > threshold_2 || x == 0) {

					this->line.addVertex(vertices[0]); this->line.addVertex(vertices[1]);
					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
					this->line.addColor(line_color); this->line.addColor(line_color);
				}

				if (noise_value_2 < threshold_1 || noise_value_2 > threshold_2 || y == 400) {

					this->line.addVertex(vertices[1]); this->line.addVertex(vertices[2]);
					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
					this->line.addColor(line_color); this->line.addColor(line_color);
				}

				if (noise_value_3 < threshold_1 || noise_value_3 > threshold_2 || x == 400) {

					this->line.addVertex(vertices[2]); this->line.addVertex(vertices[3]);
					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
					this->line.addColor(line_color); this->line.addColor(line_color);
				}

				if (noise_value_4 < threshold_1 || noise_value_4 > threshold_2 || y == 0) {

					this->line.addVertex(vertices[0]); this->line.addVertex(vertices[3]);
					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
					this->line.addColor(line_color); this->line.addColor(line_color);
				}
			}
		}
	}
}

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

	this->cam.begin();

	ofDrawBox(glm::vec3(0, 0, -100), 400, 400, 200);

	ofTranslate(-200, -200);

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

	this->cam.end();

	/*
	int start = 25;
	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());
}

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openFrameworks");

ofBackground(39);

ofSetColor(239);

ofEnableDepthTest();

ofNoFill();

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

}

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

void ofApp::update() {

this->face.clear();

this->line.clear();

float span = 1;

float threshold_1 = 0.43;

float threshold_2 = 0.57;

float noise_param = 0.008;

ofColor face_color(39);

ofColor line_color(239);

for (float x = 0; x <= 400; x += span) {

for (float y = 0; y <= 400; y += span) {

for (float z = -200; z <= 0; z += span * 20) {

line_color = ofColor(ofMap(z, -200, 0, 39, 239));

auto noise_value = ofNoise(x * noise_param, y * noise_param, z * noise_param * 0.75 - ofGetFrameNum() * 0.01);

if (noise_value < threshold_1 || noise_value > threshold_2) { continue; }

auto noise_value_1 = ofNoise((x - span) * noise_param, y * noise_param, z * noise_param * 0.75 - ofGetFrameNum() * 0.01);

auto noise_value_2 = ofNoise(x * noise_param, (y + span) * noise_param, z * noise_param * 0.75 - ofGetFrameNum() * 0.01);

auto noise_value_3 = ofNoise((x + span) * noise_param, y * noise_param, z * noise_param * 0.75 - ofGetFrameNum() * 0.01);

auto noise_value_4 = ofNoise(x * noise_param, (y - span) * noise_param, z * noise_param * 0.75 - ofGetFrameNum() * 0.01);

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(x - span * 0.5, y - span * 0.5, z));

vertices.push_back(glm::vec3(x - span * 0.5, y + span * 0.5, z));

vertices.push_back(glm::vec3(x + span * 0.5, y + span * 0.5, z));

vertices.push_back(glm::vec3(x + span * 0.5, y - span * 0.5, z));

this->face.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->face.addColor(face_color);

if (noise_value_1 < threshold_1 || noise_value_1 > threshold_2 || x == 0) {

this->line.addVertex(vertices[0]); this->line.addVertex(vertices[1]);

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

this->line.addColor(line_color); this->line.addColor(line_color);

}

if (noise_value_2 < threshold_1 || noise_value_2 > threshold_2 || y == 400) {

this->line.addVertex(vertices[1]); this->line.addVertex(vertices[2]);

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

this->line.addColor(line_color); this->line.addColor(line_color);

}

if (noise_value_3 < threshold_1 || noise_value_3 > threshold_2 || x == 400) {

this->line.addVertex(vertices[2]); this->line.addVertex(vertices[3]);

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

this->line.addColor(line_color); this->line.addColor(line_color);

}

if (noise_value_4 < threshold_1 || noise_value_4 > threshold_2 || y == 0) {

this->line.addVertex(vertices[0]); this->line.addVertex(vertices[3]);

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

this->line.addColor(line_color); this->line.addColor(line_color);

}

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

void ofApp::draw() {

this->cam.begin();

ofDrawBox(glm::vec3(0, 0, -100), 400, 400, 200);

ofTranslate(-200, -200);

this->face.draw();

this->line.draw();

this->cam.end();

int start = 25;

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/Insta20250922

2025年9月21日

noisy bridge.

[ Video ]

[ About ]
ノイズ橋。

[ 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);
	ofEnableDepthTest();
	ofSetLineWidth(3);

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

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

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

	float span = 10;
	float threshold_1 = 0.43;
	float threshold_2 = 0.57;
	float noise_param = 0.008;

	for (float x = 0; x <= 400; x += span) {

		for (float y = 0; y <= 400; y += span) {

			for (float z = -200; z <= 0; z += span * 2) {

				auto noise_value = ofNoise(x * noise_param, y * noise_param, z * noise_param * 0.1 - ofGetFrameNum() * 0.01);

				if (noise_value < threshold_1 || noise_value > threshold_2) { continue; }

				auto noise_value_1 = ofNoise((x - span) * noise_param, y * noise_param, z * noise_param * 0.1 - ofGetFrameNum() * 0.01);
				auto noise_value_2 = ofNoise(x * noise_param, (y + span) * noise_param, z * noise_param * 0.1 - ofGetFrameNum() * 0.01);
				auto noise_value_3 = ofNoise((x + span) * noise_param, y * noise_param, z * noise_param * 0.1 - ofGetFrameNum() * 0.01);
				auto noise_value_4 = ofNoise(x * noise_param, (y - span) * noise_param, z * noise_param * 0.1 - ofGetFrameNum() * 0.01);


				auto index = this->face.getNumVertices();
				vector<glm::vec3> vertices;

				vertices.push_back(glm::vec3(x - span * 0.5, y - span * 0.5, z));
				vertices.push_back(glm::vec3(x - span * 0.5, y + span * 0.5, z));
				vertices.push_back(glm::vec3(x + span * 0.5, y + span * 0.5, z));
				vertices.push_back(glm::vec3(x + span * 0.5, y - span * 0.5, z));

				this->face.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);

				if (noise_value_1 < threshold_1 || noise_value_1 > threshold_2 || x == 0) {

					this->line.addVertex(vertices[0]); this->line.addVertex(vertices[1]);
					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
				}

				if (noise_value_2 < threshold_1 || noise_value_2 > threshold_2 || y == 400) {

					this->line.addVertex(vertices[1]); this->line.addVertex(vertices[2]);
					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
				}

				if (noise_value_3 < threshold_1 || noise_value_3 > threshold_2 || x == 400) {

					this->line.addVertex(vertices[2]); this->line.addVertex(vertices[3]);
					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
				}

				if (noise_value_4 < threshold_1 || noise_value_4 > threshold_2 || y == 0) {

					this->line.addVertex(vertices[0]); this->line.addVertex(vertices[3]);
					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
				}
			}
		}
	}
}

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

	this->cam.begin();
	ofTranslate(-200, -200);

	ofSetColor(239);
	this->face.draw();

	ofSetColor(39);
	this->line.draw();

	this->cam.end();

	/*
	int start = 75;
	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());
}

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofEnableDepthTest();

ofSetLineWidth(3);

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

}

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

void ofApp::update() {

this->face.clear();

this->line.clear();

float span = 10;

float threshold_1 = 0.43;

float threshold_2 = 0.57;

float noise_param = 0.008;

for (float x = 0; x <= 400; x += span) {

for (float y = 0; y <= 400; y += span) {

for (float z = -200; z <= 0; z += span * 2) {

auto noise_value = ofNoise(x * noise_param, y * noise_param, z * noise_param * 0.1 - ofGetFrameNum() * 0.01);

if (noise_value < threshold_1 || noise_value > threshold_2) { continue; }

auto noise_value_1 = ofNoise((x - span) * noise_param, y * noise_param, z * noise_param * 0.1 - ofGetFrameNum() * 0.01);

auto noise_value_2 = ofNoise(x * noise_param, (y + span) * noise_param, z * noise_param * 0.1 - ofGetFrameNum() * 0.01);

auto noise_value_3 = ofNoise((x + span) * noise_param, y * noise_param, z * noise_param * 0.1 - ofGetFrameNum() * 0.01);

auto noise_value_4 = ofNoise(x * noise_param, (y - span) * noise_param, z * noise_param * 0.1 - ofGetFrameNum() * 0.01);

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(x - span * 0.5, y - span * 0.5, z));

vertices.push_back(glm::vec3(x - span * 0.5, y + span * 0.5, z));

vertices.push_back(glm::vec3(x + span * 0.5, y + span * 0.5, z));

vertices.push_back(glm::vec3(x + span * 0.5, y - span * 0.5, z));

this->face.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);

if (noise_value_1 < threshold_1 || noise_value_1 > threshold_2 || x == 0) {

this->line.addVertex(vertices[0]); this->line.addVertex(vertices[1]);

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

}

if (noise_value_2 < threshold_1 || noise_value_2 > threshold_2 || y == 400) {

this->line.addVertex(vertices[1]); this->line.addVertex(vertices[2]);

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

}

if (noise_value_3 < threshold_1 || noise_value_3 > threshold_2 || x == 400) {

this->line.addVertex(vertices[2]); this->line.addVertex(vertices[3]);

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

}

if (noise_value_4 < threshold_1 || noise_value_4 > threshold_2 || y == 0) {

this->line.addVertex(vertices[0]); this->line.addVertex(vertices[3]);

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

}

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

void ofApp::draw() {

this->cam.begin();

ofTranslate(-200, -200);

ofSetColor(239);

this->face.draw();

ofSetColor(39);

this->line.draw();

this->cam.end();

int start = 75;

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/Insta20250921

2025年9月20日

Scattered and gathered.

[ Video ]

[ About ]
散りばって集まる。

[ 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 windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};
	
	float 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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

float param;

};

#include "ofApp.h"

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

	ofSetFrameRate(25);
	ofSetWindowTitle("openFrameworks");

	ofBackground(39);
	ofSetColor(239, 39, 39);
	ofSetLineWidth(3);
	ofNoFill();
}

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

	int frame_number = ofGetFrameNum() % 100;
	if (frame_number < 20) {

		this->param = ofMap(frame_number, 0, 20, 0, 1);
	}
	else if (frame_number < 50) {

		this->param = 1;
	}
	else if(frame_number < 70) {

		this->param = ofMap(frame_number, 50, 70, 1, 0);
	}
	else {

		this->param = 0;
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	int in_radius = 100;
	int out_radius = 550;
	for (int deg = 0; deg < 360; deg += 5) {

		auto out = glm::vec2(out_radius * cos(deg * DEG_TO_RAD), out_radius * sin(deg * DEG_TO_RAD));
		auto noise_value = ofNoise(glm::vec3(out, ofGetFrameNum() * 0.03));
		auto noise_radius = ofMap(noise_value, 0, 1, 0, 250);
		auto radius = in_radius + noise_radius * this->param;
		auto in = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

		ofBeginShape();
		for (float small_deg = deg - 5; small_deg <= deg + 5; small_deg += 0.5) {

			ofVertex(radius * cos(small_deg * DEG_TO_RAD), radius * sin(small_deg * DEG_TO_RAD));
		}
		ofEndShape();

		ofDrawLine(in, out);
	
	}

	/*
	int start = 500;
	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(39);

ofSetColor(239, 39, 39);

ofSetLineWidth(3);

ofNoFill();

}

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

void ofApp::update() {

int frame_number = ofGetFrameNum() % 100;

if (frame_number < 20) {

this->param = ofMap(frame_number, 0, 20, 0, 1);

}

else if (frame_number < 50) {

this->param = 1;

}

else if(frame_number < 70) {

this->param = ofMap(frame_number, 50, 70, 1, 0);

}

else {

this->param = 0;

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

int in_radius = 100;

int out_radius = 550;

for (int deg = 0; deg < 360; deg += 5) {

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

auto noise_value = ofNoise(glm::vec3(out, ofGetFrameNum() * 0.03));

auto noise_radius = ofMap(noise_value, 0, 1, 0, 250);

auto radius = in_radius + noise_radius * this->param;

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

ofBeginShape();

for (float small_deg = deg - 5; small_deg <= deg + 5; small_deg += 0.5) {

ofVertex(radius * cos(small_deg * DEG_TO_RAD), radius * sin(small_deg * DEG_TO_RAD));

}

ofEndShape();

ofDrawLine(in, out);

}

int start = 500;

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/Insta20250920

2025年11月
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