2025年4月 – ページ 3 – プログラミング de 落描き

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17日

Three Elements of Light.

[ Video ]

[ About ]
光の3要素

[ Source ]

#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) {};

	ofMesh mesh;
	float noise_param;
};

#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) {};

ofMesh mesh;

float noise_param;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	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, 0.001, 0.015);
		}
		else if (param > 25) {

			this->noise_param += ofMap(param, 25, 38, 0.015, 0.001);
		}
		else {

			this->noise_param += 0.001;
		}
	}
	else {

		this->noise_param += 0.001;
	}

	this->mesh.clear();

	int len = 660;
	int span = 3;
	ofColor color;

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

		auto noise_seed = ofRandom(1000);
		for (int x = len * -0.5; x < len * 0.5; x += span) {

			for (int y = len * -0.5; y < len * 0.5; y += span) {

				auto noise_value = ofMap(ofNoise(noise_seed, x * 0.0002, y * 0.00005 - this->noise_param), 0, 1, 0, 20);
				if ((int)noise_value % 2 == 0) {

					continue;
				}

				this->mesh.addVertex(glm::vec3(x, y, 0));
				this->mesh.addVertex(glm::vec3(x + span, y, 0));
				this->mesh.addVertex(glm::vec3(x + span, y + span, 0));
				this->mesh.addVertex(glm::vec3(x, y + span, 0));

				this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 4); this->mesh.addIndex(this->mesh.getNumVertices() - 3);
				this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 2); this->mesh.addIndex(this->mesh.getNumVertices() - 3);

				auto gap_noise_value = noise_value - (int)noise_value;
				color.setHsb(ofMap(i, 0, 3, 0, 255), 200, 255, ofMap(abs(gap_noise_value - 0.5), 0, 0.5, 255, 0));
				for (int k = 0; k < 4; k++) {

					this->mesh.addColor(color);
				}
			}
		}
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	this->mesh.draw();

	/*
	int start = 400 + 480;
	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(30);

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, 0.001, 0.015);

}

else if (param > 25) {

this->noise_param += ofMap(param, 25, 38, 0.015, 0.001);

}

else {

this->noise_param += 0.001;

}

else {

this->noise_param += 0.001;

}

this->mesh.clear();

int len = 660;

int span = 3;

ofColor color;

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

auto noise_seed = ofRandom(1000);

for (int x = len * -0.5; x < len * 0.5; x += span) {

for (int y = len * -0.5; y < len * 0.5; y += span) {

auto noise_value = ofMap(ofNoise(noise_seed, x * 0.0002, y * 0.00005 - this->noise_param), 0, 1, 0, 20);

if ((int)noise_value % 2 == 0) {

continue;

}

this->mesh.addVertex(glm::vec3(x, y, 0));

this->mesh.addVertex(glm::vec3(x + span, y, 0));

this->mesh.addVertex(glm::vec3(x + span, y + span, 0));

this->mesh.addVertex(glm::vec3(x, y + span, 0));

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

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

auto gap_noise_value = noise_value - (int)noise_value;

color.setHsb(ofMap(i, 0, 3, 0, 255), 200, 255, ofMap(abs(gap_noise_value - 0.5), 0, 0.5, 255, 0));

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

this->mesh.addColor(color);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

this->mesh.draw();

int start = 400 + 480;

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/Insta20250417

2025年4月16日

Pixel art.

[ Video ]

[ About ]
ドット絵。

[ Source ]

#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) {};

	ofMesh mesh;
	float noise_param;
};

#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) {};

ofMesh mesh;

float noise_param;

};

#include "ofApp.h"

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

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

	ofBackground(239);
}

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

	ofSeedRandom(39);

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

		if (param < 25) {

			this->noise_param += ofMap(param, 12, 25, 0.001, 0.1);
		}
		else if (param > 25) {

			this->noise_param += ofMap(param, 25, 38, 0.1, 0.001);
		}
		else {

			this->noise_param += 0.001;
		}
	}
	else {

		this->noise_param += 0.001;
	}

	this->mesh.clear();

	int len = 660;
	int span = 30;
	ofColor color;

	for (int x = len * -0.5; x < len * 0.5; x += span) {

		for (int y = len * -0.5; y < len * 0.5; y += span) {

			auto noise_value = ofMap(ofNoise(x * 0.0008, y * 0.0008, this->noise_param), 0, 1, 0, 6);
			if ((int)noise_value % 2 == 0) {

				continue;
			}

			this->mesh.addVertex(glm::vec3(x, y, 0));
			this->mesh.addVertex(glm::vec3(x + span, y, 0));
			this->mesh.addVertex(glm::vec3(x + span, y + span, 0));
			this->mesh.addVertex(glm::vec3(x, y + span, 0));

			this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 4); this->mesh.addIndex(this->mesh.getNumVertices() - 3);
			this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 2); this->mesh.addIndex(this->mesh.getNumVertices() - 3);

			auto gap_noise_value = noise_value - (int)noise_value;
			color = ofColor(0, ofMap(abs(gap_noise_value - 0.5), 0, 0.5, 255, 0));
			for (int i = 0; i < 4; i++) {

				this->mesh.addColor(color);
			}
		}
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	this->mesh.draw();

	/*
	int start = 1;
	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(30);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

}

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

void ofApp::update() {

ofSeedRandom(39);

auto param = ofGetFrameNum() % 50;

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

if (param < 25) {

this->noise_param += ofMap(param, 12, 25, 0.001, 0.1);

}

else if (param > 25) {

this->noise_param += ofMap(param, 25, 38, 0.1, 0.001);

}

else {

this->noise_param += 0.001;

}

else {

this->noise_param += 0.001;

}

this->mesh.clear();

int len = 660;

int span = 30;

ofColor color;

for (int x = len * -0.5; x < len * 0.5; x += span) {

for (int y = len * -0.5; y < len * 0.5; y += span) {

auto noise_value = ofMap(ofNoise(x * 0.0008, y * 0.0008, this->noise_param), 0, 1, 0, 6);

if ((int)noise_value % 2 == 0) {

continue;

}

this->mesh.addVertex(glm::vec3(x, y, 0));

this->mesh.addVertex(glm::vec3(x + span, y, 0));

this->mesh.addVertex(glm::vec3(x + span, y + span, 0));

this->mesh.addVertex(glm::vec3(x, y + span, 0));

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

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

auto gap_noise_value = noise_value - (int)noise_value;

color = ofColor(0, ofMap(abs(gap_noise_value - 0.5), 0, 0.5, 255, 0));

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

this->mesh.addColor(color);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

this->mesh.draw();

int start = 1;

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/Insta20250416

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