2025年8月 – ページ 6 – プログラミング de 落描き

2025年8月16日

Rotting pillar.

[ Video ]

[ About ]
腐った柱。

[ 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) {};

	void setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float size);
	void setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float height, float width, float depth);

	ofEasyCam cam;
	ofMesh face, frame;

	vector<glm::vec3> location_list;
	vector<ofColor> color_list;
};

#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) {};

void setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float size);

void setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float height, float width, float depth);

ofEasyCam cam;

ofMesh face, frame;

vector<glm::vec3> location_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

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

	int span = 10;
	for (int x = -120; x <= 120; x += span) {

		for (int y = -450; y <= 450; y += span) {

			for (int z = -120; z <= 120; z += span) {

				this->location_list.push_back(glm::vec3(x, y, z));
			}
		}
	}
}

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

	ofSeedRandom(39);

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

	float size = 10;
	for (int i = 0; i < this->location_list.size(); i++) {

		this->setBoxToMesh(this->face, this->frame, this->location_list[i], size);
	}
}

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

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

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

	this->cam.end();

	/*
	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);
		}
	}
	*/
}

//--------------------------------------------------------------
void ofApp::setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float size) {

	this->setBoxToMesh(face_target, frame_target, location, size, size, size);
}

//--------------------------------------------------------------
void ofApp::setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float height, float width, float depth) {

	auto noise_value = ofNoise(glm::vec4(location.x * 0.008, location.y * 0.003, location.z * 0.008, ofGetFrameNum() * 0.01));

	if (noise_value < 0.495) { return; }
	else if (noise_value < 0.505) { noise_value = ofMap(noise_value, 0.495, 0.505, 0, 1); }
	else { noise_value = 1; }

	int face_index = face_target.getNumVertices();
	int frame_index = frame_target.getNumVertices();

	vector<glm::vec3> vertices;
	vertices.push_back(glm::vec3(width * -0.5, height * 0.5, depth * -0.5));
	vertices.push_back(glm::vec3(width * 0.5, height * 0.5, depth * -0.5));
	vertices.push_back(glm::vec3(width * 0.5, height * 0.5, depth * 0.5));
	vertices.push_back(glm::vec3(width * -0.5, height * 0.5, depth * 0.5));

	vertices.push_back(glm::vec3(width * -0.5, height * -0.5, depth * -0.5));
	vertices.push_back(glm::vec3(width * 0.5, height * -0.5, depth * -0.5));
	vertices.push_back(glm::vec3(width * 0.5, height * -0.5, depth * 0.5));
	vertices.push_back(glm::vec3(width * -0.5, height * -0.5, depth * 0.5));

	for (auto& vertex : vertices) {

		face_target.addVertex(location + vertex * 0.99 * noise_value);
		frame_target.addVertex(location + vertex * noise_value);
	}

	face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);
	face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

	face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6);
	face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

	face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 1);
	face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1);

	face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6);
	face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 1);

	face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);
	face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 2);

	face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 4);
	face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 3);

	frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);
	frame_target.addIndex(frame_index + 1); frame_target.addIndex(frame_index + 2);
	frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);
	frame_target.addIndex(frame_index + 3); frame_target.addIndex(frame_index + 0);

	frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);
	frame_target.addIndex(frame_index + 5); frame_target.addIndex(frame_index + 6);
	frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7);
	frame_target.addIndex(frame_index + 7); frame_target.addIndex(frame_index + 4);

	frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 4);
	frame_target.addIndex(frame_index + 1); frame_target.addIndex(frame_index + 5);
	frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 6);
	frame_target.addIndex(frame_index + 3); frame_target.addIndex(frame_index + 7);

	for (int i = 0; i < 8; i++) {

		face_target.addColor(ofColor(39));
		frame_target.addColor(ofColor(239));
	}
}

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

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

int span = 10;

for (int x = -120; x <= 120; x += span) {

for (int y = -450; y <= 450; y += span) {

for (int z = -120; z <= 120; z += span) {

this->location_list.push_back(glm::vec3(x, y, z));

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

float size = 10;

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

this->setBoxToMesh(this->face, this->frame, this->location_list[i], size);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 1.44);

this->face.draw();

this->frame.drawWireframe();

this->cam.end();

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);

}

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

void ofApp::setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float size) {

this->setBoxToMesh(face_target, frame_target, location, size, size, size);

}

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

void ofApp::setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float height, float width, float depth) {

auto noise_value = ofNoise(glm::vec4(location.x * 0.008, location.y * 0.003, location.z * 0.008, ofGetFrameNum() * 0.01));

if (noise_value < 0.495) { return; }

else if (noise_value < 0.505) { noise_value = ofMap(noise_value, 0.495, 0.505, 0, 1); }

else { noise_value = 1; }

int face_index = face_target.getNumVertices();

int frame_index = frame_target.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(width * -0.5, height * 0.5, depth * -0.5));

vertices.push_back(glm::vec3(width * 0.5, height * 0.5, depth * -0.5));

vertices.push_back(glm::vec3(width * 0.5, height * 0.5, depth * 0.5));

vertices.push_back(glm::vec3(width * -0.5, height * 0.5, depth * 0.5));

vertices.push_back(glm::vec3(width * -0.5, height * -0.5, depth * -0.5));

vertices.push_back(glm::vec3(width * 0.5, height * -0.5, depth * -0.5));

vertices.push_back(glm::vec3(width * 0.5, height * -0.5, depth * 0.5));

vertices.push_back(glm::vec3(width * -0.5, height * -0.5, depth * 0.5));

for (auto& vertex : vertices) {

face_target.addVertex(location + vertex * 0.99 * noise_value);

frame_target.addVertex(location + vertex * noise_value);

}

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6);

face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 1);

face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1);

face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6);

face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 1);

face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 2);

face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 4);

face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 3);

frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);

frame_target.addIndex(frame_index + 1); frame_target.addIndex(frame_index + 2);

frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);

frame_target.addIndex(frame_index + 3); frame_target.addIndex(frame_index + 0);

frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);

frame_target.addIndex(frame_index + 5); frame_target.addIndex(frame_index + 6);

frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7);

frame_target.addIndex(frame_index + 7); frame_target.addIndex(frame_index + 4);

frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 4);

frame_target.addIndex(frame_index + 1); frame_target.addIndex(frame_index + 5);

frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 6);

frame_target.addIndex(frame_index + 3); frame_target.addIndex(frame_index + 7);

for (int i = 0; i < 8; i++) {

face_target.addColor(ofColor(39));

frame_target.addColor(ofColor(239));

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20250816

2025年8月15日

Circle of Circle.

[ Video ]

[ About ]
円による円。

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

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

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void 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) {};

	vector<glm::vec2> location_list;
	float rotate_deg;

	void draw_arrow(glm::vec2 location, glm::vec2 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) {};

vector<glm::vec2> location_list;

float rotate_deg;

void draw_arrow(glm::vec2 location, glm::vec2 next_location, float size, ofColor fill_color, ofColor no_fill_color);

};

#include "ofApp.h"

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

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

	ofBackground(39);
	ofSetCircleResolution(60);

	ofFbo fbo;
	fbo.allocate(ofGetWidth(), ofGetHeight());
	fbo.begin();
	ofTranslate(ofGetWindowSize() * 0.5);
	ofClear(0);

	ofDrawCircle(glm::vec2(), 200);

	fbo.end();
	auto span = 10;
	ofPixels pixels;
	fbo.readToPixels(pixels);
	for (int x = 0; x < 720; x += span) {

		for (int y = 0; y < 720; y += span) {

			ofColor color = pixels.getColor(x, y);
			if (color != ofColor(0, 0)) {

				this->location_list.push_back(glm::vec3(x, y, 0) - ofGetWindowSize() * 0.5);
			}
		}
	}

}

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

	ofSeedRandom(39);
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	if (ofGetFrameNum() % 50 > 9) {

		int span = 10;
		auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));
		for (auto& location : this->location_list) {

			auto x = location.x;
			auto y = location.y;

			auto p = ofGetFrameNum() % 50;
			auto next_p = (ofGetFrameNum() + 1) % 50;

			auto param = p < 10 ? 0 : p < 25 ? ofMap(p, 10, 25, 0, 1) : p < 40 ? 1 : ofMap(p, 40, 50, 1, 0);
			auto next_param = next_p < 10 ? 0 : next_p < 25 ? ofMap(next_p, 10, 25, 0, 1) : next_p < 40 ? 1 : ofMap(next_p, 40, 50, 1, 0);

			auto param_x = ofMap(ofNoise(noise_seed.x, x * 0.015, y * 0.015, ofGetFrameNum() * 0.025), 0, 1, span * -20, span * 20) * param;
			auto param_y = ofMap(ofNoise(noise_seed.y, x * 0.015, y * 0.015, ofGetFrameNum() * 0.025), 0, 1, span * -20, span * 20) * param;

			auto next_param_x = ofMap(ofNoise(noise_seed.x, x * 0.015, y * 0.015, (ofGetFrameNum() + 1) * 0.025), 0, 1, span * -20, span * 20) * next_param;
			auto next_param_y = ofMap(ofNoise(noise_seed.y, x * 0.015, y * 0.015, (ofGetFrameNum() + 1) * 0.025), 0, 1, span * -20, span * 20) * next_param;

			ofSetColor(39);
			ofFill();
			ofDrawCircle(x + param_x, y + param_y, span * 0.3);

			ofSetColor(239);
			ofNoFill();
			ofDrawCircle(x + param_x, y + param_y, span * 0.3);
		}
	}
	else {

		ofSetColor(39);
		ofFill();
		ofDrawCircle(glm::vec2(), 200);

		ofSetColor(239);
		ofNoFill(); 
		ofDrawCircle(glm::vec2(), 200);
	}

	/*
	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::vec2 location, glm::vec2 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::vec2(size * 0.8 * cos(angle), size * 0.8 * sin(angle)) + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) + location);
	ofEndShape(true);

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

	ofSetColor(no_fill_color);
	ofNoFill();
	ofBeginShape();
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) + location);
	ofVertex(glm::vec2(size * 0.8 * cos(angle), size * 0.8 * sin(angle)) + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 + location);
	ofEndShape();

	ofBeginShape();
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 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(25);

ofSetWindowTitle("openFrameworks");

ofBackground(39);

ofSetCircleResolution(60);

ofFbo fbo;

fbo.allocate(ofGetWidth(), ofGetHeight());

fbo.begin();

ofTranslate(ofGetWindowSize() * 0.5);

ofClear(0);

ofDrawCircle(glm::vec2(), 200);

fbo.end();

auto span = 10;

ofPixels pixels;

fbo.readToPixels(pixels);

for (int x = 0; x < 720; x += span) {

for (int y = 0; y < 720; y += span) {

ofColor color = pixels.getColor(x, y);

if (color != ofColor(0, 0)) {

this->location_list.push_back(glm::vec3(x, y, 0) - ofGetWindowSize() * 0.5);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

if (ofGetFrameNum() % 50 > 9) {

int span = 10;

auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

for (auto& location : this->location_list) {

auto x = location.x;

auto y = location.y;

auto p = ofGetFrameNum() % 50;

auto next_p = (ofGetFrameNum() + 1) % 50;

auto param = p < 10 ? 0 : p < 25 ? ofMap(p, 10, 25, 0, 1) : p < 40 ? 1 : ofMap(p, 40, 50, 1, 0);

auto next_param = next_p < 10 ? 0 : next_p < 25 ? ofMap(next_p, 10, 25, 0, 1) : next_p < 40 ? 1 : ofMap(next_p, 40, 50, 1, 0);

auto param_x = ofMap(ofNoise(noise_seed.x, x * 0.015, y * 0.015, ofGetFrameNum() * 0.025), 0, 1, span * -20, span * 20) * param;

auto param_y = ofMap(ofNoise(noise_seed.y, x * 0.015, y * 0.015, ofGetFrameNum() * 0.025), 0, 1, span * -20, span * 20) * param;

auto next_param_x = ofMap(ofNoise(noise_seed.x, x * 0.015, y * 0.015, (ofGetFrameNum() + 1) * 0.025), 0, 1, span * -20, span * 20) * next_param;

auto next_param_y = ofMap(ofNoise(noise_seed.y, x * 0.015, y * 0.015, (ofGetFrameNum() + 1) * 0.025), 0, 1, span * -20, span * 20) * next_param;

ofSetColor(39);

ofFill();

ofDrawCircle(x + param_x, y + param_y, span * 0.3);

ofSetColor(239);

ofNoFill();

ofDrawCircle(x + param_x, y + param_y, span * 0.3);

}

else {

ofSetColor(39);

ofFill();

ofDrawCircle(glm::vec2(), 200);

ofSetColor(239);

ofNoFill();

ofDrawCircle(glm::vec2(), 200);

}

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::vec2 location, glm::vec2 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::vec2(size * 0.8 * cos(angle), size * 0.8 * sin(angle)) + location);

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

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

ofEndShape(true);

ofBeginShape();

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

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

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

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

ofEndShape(true);

ofSetColor(no_fill_color);

ofNoFill();

ofBeginShape();

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

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

ofVertex(glm::vec2(size * 0.8 * cos(angle), size * 0.8 * sin(angle)) + location);

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

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

ofEndShape();

ofBeginShape();

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

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

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

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

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20250815/

2025年8月14日

Arrow of arrows.

[ Video ]

[ About ]
矢印による矢印。

[ 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) {};

	vector<glm::vec2> location_list;
	float rotate_deg;

	void draw_arrow(glm::vec2 location, glm::vec2 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) {};

vector<glm::vec2> location_list;

float rotate_deg;

void draw_arrow(glm::vec2 location, glm::vec2 next_location, float size, ofColor fill_color, ofColor no_fill_color);

};

#include "ofApp.h"

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

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

	ofBackground(239);

	ofFbo fbo;
	fbo.allocate(ofGetWidth(), ofGetHeight());
	fbo.begin();
	ofTranslate(ofGetWindowSize() * 0.5);
	ofClear(0);

	this->draw_arrow(glm::vec2(), glm::vec2(1, 0), 300, ofColor(0), ofColor(0));

	fbo.end();
	auto span = 10;
	ofPixels pixels;
	fbo.readToPixels(pixels);
	for (int x = 0; x < 720; x += span) {

		for (int y = 0; y < 720; y += span) {

			ofColor color = pixels.getColor(x, y);
			if (color != ofColor(0, 0)) {

				this->location_list.push_back(glm::vec3(x, y, 0) - ofGetWindowSize() * 0.5);
			}
		}
	}

}

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

	ofSeedRandom(39);

	int p = ofGetFrameNum() % 50;
	if (p < 10) {
		
		this->rotate_deg += 7.2;
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);
	ofRotate(this->rotate_deg);

	int span = 10;
	for (auto& location : this->location_list) {

		auto x = location.x;
		auto y = location.y;

		auto p = ofGetFrameNum() % 50;
		auto next_p = (ofGetFrameNum() + 1) % 50;

		auto param = p < 10 ? 0 : p < 25 ? ofMap(p, 10, 25, 0, 1) : p < 40 ? 1 : ofMap(p, 40, 50, 1, 0);
		auto next_param = next_p < 10 ? 0 : next_p < 25 ? ofMap(next_p, 10, 25, 0, 1) : next_p < 40 ? 1 : ofMap(next_p, 40, 50, 1, 0);

		auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

		auto param_x = ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.015), 0, 1, span * -15, span * 15) * param;
		auto param_y = ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.015), 0, 1, span * -15, span * 15) * param;

		auto next_param_x = ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + 1) * 0.015), 0, 1, span * -15, span * 15) * next_param;
		auto next_param_y = ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + 1) * 0.015), 0, 1, span * -15, span * 15) * next_param;

		if (param > 0) {

			this->draw_arrow(glm::vec2(x + param_x, y + param_y), glm::vec2(x + next_param_x, y + next_param_y), span * 1.5, ofColor(0), ofColor(255));
		}
		else {

			ofSetColor(0);
			ofFill();
			ofDrawCircle(x + param_x, y + param_y, span * 0.35);

			ofSetColor(255);
			ofNoFill();
			ofDrawCircle(x + param_x, y + param_y, span * 0.35);
		}
	}

	/*
	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);
		}
	}
	*/
}

//--------------------------------------------------------------
void ofApp::draw_arrow(glm::vec2 location, glm::vec2 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::vec2(size * 0.8 * cos(angle), size * 0.8 * sin(angle)) + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) + location);
	ofEndShape(true);

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

	ofSetColor(no_fill_color);
	ofNoFill();
	ofBeginShape();
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) + location);
	ofVertex(glm::vec2(size * 0.8 * cos(angle), size * 0.8 * sin(angle)) + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 + location);
	ofEndShape();

	ofBeginShape();
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 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(25);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofFbo fbo;

fbo.allocate(ofGetWidth(), ofGetHeight());

fbo.begin();

ofTranslate(ofGetWindowSize() * 0.5);

ofClear(0);

this->draw_arrow(glm::vec2(), glm::vec2(1, 0), 300, ofColor(0), ofColor(0));

fbo.end();

auto span = 10;

ofPixels pixels;

fbo.readToPixels(pixels);

for (int x = 0; x < 720; x += span) {

for (int y = 0; y < 720; y += span) {

ofColor color = pixels.getColor(x, y);

if (color != ofColor(0, 0)) {

this->location_list.push_back(glm::vec3(x, y, 0) - ofGetWindowSize() * 0.5);

}

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

void ofApp::update() {

ofSeedRandom(39);

int p = ofGetFrameNum() % 50;

if (p < 10) {

this->rotate_deg += 7.2;

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

ofRotate(this->rotate_deg);

int span = 10;

for (auto& location : this->location_list) {

auto x = location.x;

auto y = location.y;

auto p = ofGetFrameNum() % 50;

auto next_p = (ofGetFrameNum() + 1) % 50;

auto param = p < 10 ? 0 : p < 25 ? ofMap(p, 10, 25, 0, 1) : p < 40 ? 1 : ofMap(p, 40, 50, 1, 0);

auto next_param = next_p < 10 ? 0 : next_p < 25 ? ofMap(next_p, 10, 25, 0, 1) : next_p < 40 ? 1 : ofMap(next_p, 40, 50, 1, 0);

auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

auto param_x = ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.015), 0, 1, span * -15, span * 15) * param;

auto param_y = ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.015), 0, 1, span * -15, span * 15) * param;

auto next_param_x = ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + 1) * 0.015), 0, 1, span * -15, span * 15) * next_param;

auto next_param_y = ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + 1) * 0.015), 0, 1, span * -15, span * 15) * next_param;

if (param > 0) {

this->draw_arrow(glm::vec2(x + param_x, y + param_y), glm::vec2(x + next_param_x, y + next_param_y), span * 1.5, ofColor(0), ofColor(255));

}

else {

ofSetColor(0);

ofFill();

ofDrawCircle(x + param_x, y + param_y, span * 0.35);

ofSetColor(255);

ofNoFill();

ofDrawCircle(x + param_x, y + param_y, span * 0.35);

}

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);

}

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

void ofApp::draw_arrow(glm::vec2 location, glm::vec2 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::vec2(size * 0.8 * cos(angle), size * 0.8 * sin(angle)) + location);

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

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

ofEndShape(true);

ofBeginShape();

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

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

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

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

ofEndShape(true);

ofSetColor(no_fill_color);

ofNoFill();

ofBeginShape();

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

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

ofVertex(glm::vec2(size * 0.8 * cos(angle), size * 0.8 * sin(angle)) + location);

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

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

ofEndShape();

ofBeginShape();

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

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

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

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

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20250814

2025年8月
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