2025年5月 – プログラミング de 落描き

2025年5月9日2025年5月9日

Crooked lines.

[ Video ]

[ About ]
曲がる線.

[ 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, frame;
};

#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, frame;

};

#include "ofApp.h"

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

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

	ofBackground(39);
	ofSetLineWidth(2);
	ofEnableDepthTest();
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

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

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

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

	int span = 1;
	int len = 100;

	int z = len + span * 1.5;

	float angle;
	glm::highp_mat4 rotation, twist;
	for (auto i = 0; i < 12; i++) {

		ofColor face_color, line_color;
		face_color.setHsb(ofMap(i, 0, 12, 0, 255), 200, 255, 64);
		line_color.setHsb(ofMap(i, 0, 12, 0, 255), 200, 255);

		for (auto x = 0; x <= len * 0.05; x += span) {

			for (auto y = 0; y <= len * 48; y += span) {

				angle = PI * 0.01 * i;
				rotation = glm::rotate(glm::mat4(), angle, glm::vec3(0, 1, 0));

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

				vertices.push_back(glm::vec4(x - span * 0.5, y - span * 0.5, z, 0) * rotation);
				vertices.push_back(glm::vec4(x + span * 0.5, y - span * 0.5, z, 0) * rotation);
				vertices.push_back(glm::vec4(x + span * 0.5, y + span * 0.5, z, 0) * rotation);
				vertices.push_back(glm::vec4(x - span * 0.5, y + span * 0.5, z, 0) * rotation);

				for (auto& vertex : vertices) {

					auto noise_value = ofNoise(i * 1000, vertex.y * 0.0005 + ofGetFrameNum() * 0.0025);
					auto twist_rad = ofMap(noise_value, 0, 1, PI * -6, PI * 6);
					twist = glm::rotate(glm::mat4(), twist_rad, glm::vec3(0, 1, 0));

					vertex = glm::vec4(vertex, 0) * twist;
				}

				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 (x == 0) {

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

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

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

				if (x >= len * 0.05) {

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

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

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

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

	this->cam.begin();
	ofRotateX(90);
	ofTranslate(0, -1200, 0);
	
	this->frame.drawWireframe();
	this->face.draw();

	this->cam.end();

	/*
	// ffmpeg -i img_%04d.jpg aaa.mp4
	int start = 300;
	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);

ofSetLineWidth(2);

ofEnableDepthTest();

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

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

}

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

void ofApp::update() {

this->face.clear();

this->frame.clear();

int span = 1;

int len = 100;

int z = len + span * 1.5;

float angle;

glm::highp_mat4 rotation, twist;

for (auto i = 0; i < 12; i++) {

ofColor face_color, line_color;

face_color.setHsb(ofMap(i, 0, 12, 0, 255), 200, 255, 64);

line_color.setHsb(ofMap(i, 0, 12, 0, 255), 200, 255);

for (auto x = 0; x <= len * 0.05; x += span) {

for (auto y = 0; y <= len * 48; y += span) {

angle = PI * 0.01 * i;

rotation = glm::rotate(glm::mat4(), angle, glm::vec3(0, 1, 0));

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec4(x - span * 0.5, y - span * 0.5, z, 0) * rotation);

vertices.push_back(glm::vec4(x + span * 0.5, y - span * 0.5, z, 0) * rotation);

vertices.push_back(glm::vec4(x + span * 0.5, y + span * 0.5, z, 0) * rotation);

vertices.push_back(glm::vec4(x - span * 0.5, y + span * 0.5, z, 0) * rotation);

for (auto& vertex : vertices) {

auto noise_value = ofNoise(i * 1000, vertex.y * 0.0005 + ofGetFrameNum() * 0.0025);

auto twist_rad = ofMap(noise_value, 0, 1, PI * -6, PI * 6);

twist = glm::rotate(glm::mat4(), twist_rad, glm::vec3(0, 1, 0));

vertex = glm::vec4(vertex, 0) * twist;

}

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 (x == 0) {

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

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

this->frame.addColor(line_color);

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

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

}

if (x >= len * 0.05) {

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

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

this->frame.addColor(line_color);

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

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

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(90);

ofTranslate(0, -1200, 0);

this->frame.drawWireframe();

this->face.draw();

this->cam.end();

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

int start = 300;

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/Insta20250509

2025年5月8日

Varying speeds.

[ Video ]

[ About ]
流れの速度が異なる。

[ 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) {};

	ofEasyCam cam;
	ofMesh face, frame;
};

#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, frame;

};

#include "ofApp.h"

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

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

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

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

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

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

	int span = 10;
	int len = 100;

	int z = len + span * 0.5;

	float angle;
	glm::highp_mat4 rotation, twist;
	for (auto i = 0; i < 50; i++) {

		z += 5;
		ofColor face_color, line_color;
		face_color.setHsb(150, ofMap(i, 0, 50, 0, 255), 255);
		line_color.setHsb(150, 255, ofMap(i, 0, 50, 255, 0));

		for (auto x = 0; x <= len * 0.2; x += span) {

			for (auto y = 0; y <= len * 24; y += span) {

				angle = PI * 0.01 * i;
				rotation = glm::rotate(glm::mat4(), angle, glm::vec3(0, 1, 0));

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

				vertices.push_back(glm::vec4(x - span * 0.5, y - span * 0.5, z, 0) * rotation);
				vertices.push_back(glm::vec4(x + span * 0.5, y - span * 0.5, z, 0) * rotation);
				vertices.push_back(glm::vec4(x + span * 0.5, y + span * 0.5, z, 0) * rotation);
				vertices.push_back(glm::vec4(x - span * 0.5, y + span * 0.5, z, 0) * rotation);

				for (auto& vertex : vertices) {

					auto noise_value = ofNoise(i * 1000, vertex.y * 0.0003 + ofGetFrameNum() * ofMap(i, 0, 50, 0.01, 0.0005));
					auto twist_rad = ofMap(noise_value, 0, 1, PI * -3, PI * 3);
					twist = glm::rotate(glm::mat4(), twist_rad, glm::vec3(0, 1, 0));

					vertex = glm::vec4(vertex, 0) * twist;
				}

				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 (x == 0) {

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

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

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

				if (x >= len * 0.2) {

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

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

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

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

	this->cam.begin();
	ofTranslate(0, -1200, 0);
	ofRotateY(ofGetFrameNum() * 0.72);

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

	this->cam.end();

	/*
	// ffmpeg -i img_%04d.jpg aaa.mp4
	int start = 300;
	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);

ofSetLineWidth(2);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

this->face.clear();

this->frame.clear();

int span = 10;

int len = 100;

int z = len + span * 0.5;

float angle;

glm::highp_mat4 rotation, twist;

for (auto i = 0; i < 50; i++) {

z += 5;

ofColor face_color, line_color;

face_color.setHsb(150, ofMap(i, 0, 50, 0, 255), 255);

line_color.setHsb(150, 255, ofMap(i, 0, 50, 255, 0));

for (auto x = 0; x <= len * 0.2; x += span) {

for (auto y = 0; y <= len * 24; y += span) {

angle = PI * 0.01 * i;

rotation = glm::rotate(glm::mat4(), angle, glm::vec3(0, 1, 0));

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec4(x - span * 0.5, y - span * 0.5, z, 0) * rotation);

vertices.push_back(glm::vec4(x + span * 0.5, y - span * 0.5, z, 0) * rotation);

vertices.push_back(glm::vec4(x + span * 0.5, y + span * 0.5, z, 0) * rotation);

vertices.push_back(glm::vec4(x - span * 0.5, y + span * 0.5, z, 0) * rotation);

for (auto& vertex : vertices) {

auto noise_value = ofNoise(i * 1000, vertex.y * 0.0003 + ofGetFrameNum() * ofMap(i, 0, 50, 0.01, 0.0005));

auto twist_rad = ofMap(noise_value, 0, 1, PI * -3, PI * 3);

twist = glm::rotate(glm::mat4(), twist_rad, glm::vec3(0, 1, 0));

vertex = glm::vec4(vertex, 0) * twist;

}

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 (x == 0) {

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

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

this->frame.addColor(line_color);

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

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

}

if (x >= len * 0.2) {

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

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

this->frame.addColor(line_color);

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

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

}

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

void ofApp::draw() {

this->cam.begin();

ofTranslate(0, -1200, 0);

ofRotateY(ofGetFrameNum() * 0.72);

this->frame.drawWireframe();

this->face.draw();

this->cam.end();

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

int start = 300;

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/Insta20250508

2025年5月7日

neon collar.

[ Video ]

[ About ]
ネオンカラー。

[ 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) {};

	float noise_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) {};

float noise_param;

};

#include "ofApp.h"

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

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

	ofBackground(39);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
}

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

	ofSeedRandom(39);

	auto param = ofGetFrameNum() % 50;
	if (param > 12 && param < 38) {

		if (param < 25) {

			this->noise_param += ofMap(param, 12, 25, 0.0001, 0.015);
		}
		else if (param > 25) {

			this->noise_param += ofMap(param, 25, 38, 0.015, 0.0001);
		}
		else {

			this->noise_param += 0.0001;
		}
	}
	else {

		this->noise_param += 0.0001;
	}
}

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

	vector<glm::vec2> location_list;

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

		location_list.push_back(glm::vec2(
			ofMap(ofNoise(ofRandom(1000), this->noise_param), 0, 1, -100, 820),
			ofMap(ofNoise(ofRandom(1000), this->noise_param), 0, 1, -100, 820)));
	}

	int span = 80;
	ofColor color;
	for (int i = 0; i < location_list.size(); i++) {

		float max_alpha = 0;
		color.setHsb(ofMap(i, 0, 200, 0, 255), 255, 255);
		for (int k = 0; k < location_list.size(); k++) {

			if (i == k) { continue; }

			auto distance = glm::distance(location_list[i], location_list[k]);
			if (distance < span) {

				vector<glm::vec2> vertices;
				auto direction_rad = std::atan2(location_list[k].y - location_list[i].y, location_list[k].x - location_list[i].x);
				auto direction_deg = direction_rad * RAD_TO_DEG + 90;

				int radius = 3;
				for (int deg = direction_deg; deg <= direction_deg + 180; deg += 3) {

					vertices.push_back(location_list[i] + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));
				}

				for (int deg = direction_deg + 180; deg <= direction_deg + 360; deg += 3) {

					vertices.push_back(location_list[k] + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));
				}

				auto alpha = distance < span * 0.6 ? 255 : ofMap(distance, span * 0.6, span * 0.85, 255, 0);
				ofSetColor(color, alpha);
				ofNoFill();
				ofBeginShape();
				ofVertices(vertices);
				ofEndShape(true);

				if (alpha > max_alpha) { max_alpha = alpha; }
			}
		}
	}

	for (int i = 0; i < location_list.size(); i++) {

		float max_alpha = 0;
		color.setHsb(ofMap(i, 0, 200, 0, 255), 255, 255);
		for (int k = 0; k < location_list.size(); k++) {

			if (i == k) { continue; }

			auto distance = glm::distance(location_list[i], location_list[k]);
			if (distance < span) {

				vector<glm::vec2> vertices;
				auto direction_rad = std::atan2(location_list[k].y - location_list[i].y, location_list[k].x - location_list[i].x);
				auto direction_deg = direction_rad * RAD_TO_DEG + 90;

				int radius = 1;
				for (int deg = direction_deg; deg <= direction_deg + 180; deg += 3) {

					vertices.push_back(location_list[i] + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));
				}

				for (int deg = direction_deg + 180; deg <= direction_deg + 360; deg += 3) {

					vertices.push_back(location_list[k] + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));
				}

				auto alpha = distance < span * 0.6 ? 255 : ofMap(distance, span * 0.6, span * 0.85, 255, 0);
				ofSetColor(255, alpha);
				ofFill();
				ofBeginShape();
				ofVertices(vertices);
				ofEndShape(true);

				if (alpha > max_alpha) { max_alpha = alpha; }
			}
		}
	}

	/*
	int start = 300;
	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);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

}

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

void ofApp::update() {

ofSeedRandom(39);

auto param = ofGetFrameNum() % 50;

if (param > 12 && param < 38) {

if (param < 25) {

this->noise_param += ofMap(param, 12, 25, 0.0001, 0.015);

}

else if (param > 25) {

this->noise_param += ofMap(param, 25, 38, 0.015, 0.0001);

}

else {

this->noise_param += 0.0001;

}

else {

this->noise_param += 0.0001;

}

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

void ofApp::draw() {

vector<glm::vec2> location_list;

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

location_list.push_back(glm::vec2(

ofMap(ofNoise(ofRandom(1000), this->noise_param), 0, 1, -100, 820),

ofMap(ofNoise(ofRandom(1000), this->noise_param), 0, 1, -100, 820)));

}

int span = 80;

ofColor color;

for (int i = 0; i < location_list.size(); i++) {

float max_alpha = 0;

color.setHsb(ofMap(i, 0, 200, 0, 255), 255, 255);

for (int k = 0; k < location_list.size(); k++) {

if (i == k) { continue; }

auto distance = glm::distance(location_list[i], location_list[k]);

if (distance < span) {

vector<glm::vec2> vertices;

auto direction_rad = std::atan2(location_list[k].y - location_list[i].y, location_list[k].x - location_list[i].x);

auto direction_deg = direction_rad * RAD_TO_DEG + 90;

int radius = 3;

for (int deg = direction_deg; deg <= direction_deg + 180; deg += 3) {

vertices.push_back(location_list[i] + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));

}

for (int deg = direction_deg + 180; deg <= direction_deg + 360; deg += 3) {

vertices.push_back(location_list[k] + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));

}

auto alpha = distance < span * 0.6 ? 255 : ofMap(distance, span * 0.6, span * 0.85, 255, 0);

ofSetColor(color, alpha);

ofNoFill();

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

if (alpha > max_alpha) { max_alpha = alpha; }

}

for (int i = 0; i < location_list.size(); i++) {

float max_alpha = 0;

color.setHsb(ofMap(i, 0, 200, 0, 255), 255, 255);

for (int k = 0; k < location_list.size(); k++) {

if (i == k) { continue; }

auto distance = glm::distance(location_list[i], location_list[k]);

if (distance < span) {

vector<glm::vec2> vertices;

auto direction_rad = std::atan2(location_list[k].y - location_list[i].y, location_list[k].x - location_list[i].x);

auto direction_deg = direction_rad * RAD_TO_DEG + 90;

int radius = 1;

for (int deg = direction_deg; deg <= direction_deg + 180; deg += 3) {

vertices.push_back(location_list[i] + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));

}

for (int deg = direction_deg + 180; deg <= direction_deg + 360; deg += 3) {

vertices.push_back(location_list[k] + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));

}

auto alpha = distance < span * 0.6 ? 255 : ofMap(distance, span * 0.6, span * 0.85, 255, 0);

ofSetColor(255, alpha);

ofFill();

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

if (alpha > max_alpha) { max_alpha = alpha; }

}

int start = 300;

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/Insta20250507

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