2025年7月 – ページ 2 – プログラミング de 落描き

2025年7月27日

Square torus.

[ Video ]

[ About ]
正方形トーラス。

[ 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) {};

	glm::vec3 make_point(float R, float r, float u, float v);

	ofEasyCam cam;
};

#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) {};

glm::vec3 make_point(float R, float r, float u, float v);

ofEasyCam cam;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateX(270);
	ofRotateZ(180);

	int v_span = 5;
	int u_span = 90;
	int R = 200;
	int r = 70;

	ofMesh face, line;
	line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
	ofColor line_color_1, line_color_2;

	for (int v = 0; v < 360; v += v_span) {

		int u_start = ofMap(ofNoise(v * 0.005 + ofGetFrameNum() * 0.015), 0, 1, -360, 360);
		int next_u = u_start + u_span;
		for (int u = u_start; u < u_start + 360; u += u_span) {

			face.addVertex(this->make_point(R, r, u, v));
			face.addVertex(this->make_point(R, r, u + u_span, v));
			face.addVertex(this->make_point(R, r, next_u + u_span, v + v_span * 0.5));
			face.addVertex(this->make_point(R, r, next_u, v + v_span * 0.5));

			line.addVertex(this->make_point(R, r, u, v));
			line.addVertex(this->make_point(R, r, u + u_span, v));
			line.addVertex(this->make_point(R, r, next_u + u_span, v + v_span * 0.5));
			line.addVertex(this->make_point(R, r, next_u, v + v_span * 0.5));

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

			face.addColor(face_color);
			face.addColor(face_color);
			face.addColor(face_color);
			face.addColor(face_color);

			line.addColor(line_color);
			line.addColor(line_color);
			line.addColor(line_color);
			line.addColor(line_color);

			face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3);
			face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4);

			line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 2);
			line.addIndex(line.getNumVertices() - 3); line.addIndex(line.getNumVertices() - 4);

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

			next_u += u_span;
		}
	}

	face.drawFaces();
	line.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);
		}
	}
	*/
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

	// 数学デッサン教室 描いて楽しむ数学たち　P.31

	u *= DEG_TO_RAD;
	v *= DEG_TO_RAD;

	auto x = (R + r * cos(u)) * cos(v);
	auto y = (R + r * cos(u)) * sin(v);
	auto z = r * sin(u);

	return glm::vec3(x, y, z);
}

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

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(270);

ofRotateZ(180);

int v_span = 5;

int u_span = 90;

int R = 200;

int r = 70;

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

ofColor line_color_1, line_color_2;

for (int v = 0; v < 360; v += v_span) {

int u_start = ofMap(ofNoise(v * 0.005 + ofGetFrameNum() * 0.015), 0, 1, -360, 360);

int next_u = u_start + u_span;

for (int u = u_start; u < u_start + 360; u += u_span) {

face.addVertex(this->make_point(R, r, u, v));

face.addVertex(this->make_point(R, r, u + u_span, v));

face.addVertex(this->make_point(R, r, next_u + u_span, v + v_span * 0.5));

face.addVertex(this->make_point(R, r, next_u, v + v_span * 0.5));

line.addVertex(this->make_point(R, r, u, v));

line.addVertex(this->make_point(R, r, u + u_span, v));

line.addVertex(this->make_point(R, r, next_u + u_span, v + v_span * 0.5));

line.addVertex(this->make_point(R, r, next_u, v + v_span * 0.5));

ofColor face_color = ofColor(39);

ofColor line_color = ofColor(39, 39, 239);

face.addColor(face_color);

line.addColor(line_color);

face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3);

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

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

line.addIndex(line.getNumVertices() - 3); line.addIndex(line.getNumVertices() - 4);

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

next_u += u_span;

}

face.drawFaces();

line.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);

}

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

glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

// 数学デッサン教室描いて楽しむ数学たち　P.31

u *= DEG_TO_RAD;

v *= DEG_TO_RAD;

auto x = (R + r * cos(u)) * cos(v);

auto y = (R + r * cos(u)) * sin(v);

auto z = r * sin(u);

return glm::vec3(x, y, z);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20250727

2025年7月26日2025年7月27日

Polygons.

[ Video ]

[ About ]
多角形。

[ 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 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 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);
	ofSetColor(239);
	ofNoFill();
	ofSetLineWidth(1.5);
}

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

	ofSeedRandom(39);

	if (ofGetFrameNum() % 50 < 30) {

		this->noise_param += ofMap(ofGetFrameNum() % 50, 0, 30, 0.1, 0);
	}
}

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

	auto deg_span = 60;
	for (int x = 90; x < ofGetWindowWidth(); x += 180) {

		for (int y = 90; y < ofGetWindowHeight(); y += 180) {

			vector<glm::vec2> vertices_1;
			vector<glm::vec2> vertices_2;

			auto base_radius = 40;
			auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));
			auto deg_start = ofMap(ofNoise(ofRandom(1000), this->noise_param), 0, 1, -360, 360);
			auto deg_span = 360 / (int)ofRandom(3, 6);
			for (int deg = deg_start; deg < deg_start + 360; deg += deg_span) {

				auto noise_radius = ofMap(ofNoise(noise_seed.y, this->noise_param), 0, 1, 0, 80);
				auto noise_deg = ofMap(ofNoise(noise_seed.x, this->noise_param), 0, 1, -360, 360);

				auto base = glm::vec2(x + base_radius * cos(deg * DEG_TO_RAD), y + base_radius * sin(deg * DEG_TO_RAD));
				auto target = glm::vec2(x + noise_radius * cos((deg + noise_deg) * DEG_TO_RAD), y + noise_radius * sin((deg + noise_deg) * DEG_TO_RAD));

				vertices_1.push_back(base);
				vertices_2.push_back(target);

				ofDrawLine(base, target);
			}

			ofBeginShape();
			ofVertices(vertices_1);
			ofEndShape(true);

			ofBeginShape();
			ofVertices(vertices_2);
			ofEndShape(true);
		}
	}

	/*
	int start = 100;
	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);

ofNoFill();

ofSetLineWidth(1.5);

}

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

void ofApp::update() {

ofSeedRandom(39);

if (ofGetFrameNum() % 50 < 30) {

this->noise_param += ofMap(ofGetFrameNum() % 50, 0, 30, 0.1, 0);

}

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

void ofApp::draw() {

auto deg_span = 60;

for (int x = 90; x < ofGetWindowWidth(); x += 180) {

for (int y = 90; y < ofGetWindowHeight(); y += 180) {

vector<glm::vec2> vertices_1;

vector<glm::vec2> vertices_2;

auto base_radius = 40;

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

auto deg_start = ofMap(ofNoise(ofRandom(1000), this->noise_param), 0, 1, -360, 360);

auto deg_span = 360 / (int)ofRandom(3, 6);

for (int deg = deg_start; deg < deg_start + 360; deg += deg_span) {

auto noise_radius = ofMap(ofNoise(noise_seed.y, this->noise_param), 0, 1, 0, 80);

auto noise_deg = ofMap(ofNoise(noise_seed.x, this->noise_param), 0, 1, -360, 360);

auto base = glm::vec2(x + base_radius * cos(deg * DEG_TO_RAD), y + base_radius * sin(deg * DEG_TO_RAD));

auto target = glm::vec2(x + noise_radius * cos((deg + noise_deg) * DEG_TO_RAD), y + noise_radius * sin((deg + noise_deg) * DEG_TO_RAD));

vertices_1.push_back(base);

vertices_2.push_back(target);

ofDrawLine(base, target);

}

ofBeginShape();

ofVertices(vertices_1);

ofEndShape(true);

ofBeginShape();

ofVertices(vertices_2);

ofEndShape(true);

}

int start = 100;

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/Insta20250726

2025年7月25日

Connective vertex.

[ Video ]

[ About ]
頂点を繋ぐ。

[ 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) {};
};

#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) {};

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofNoFill();
	ofSetLineWidth(2);
}

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

	ofSeedRandom(39);
}

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

	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

	auto deg_span = 60;
	for (int x = -180; x <= 180; x += 360) {

		for (int y = -180; y <= 180; y += 360) {

			vector<glm::vec2> vertices_1;
			vector<glm::vec2> vertices_2;

			auto base_radius = 90;
			auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));
			auto deg_start = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -360, 360);
			for (int deg = deg_start; deg < deg_start + 360; deg += deg_span) {

				auto noise_radius = ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.05), 0, 1, 20, 180);
				auto noise_deg = ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.005), 0, 1, -360, 360);

				auto base = glm::vec2(x + base_radius * cos(deg * DEG_TO_RAD), y + base_radius * sin(deg * DEG_TO_RAD));
				auto target = glm::vec2(x + noise_radius * cos((deg + noise_deg) * DEG_TO_RAD), y + noise_radius * sin((deg + noise_deg) * DEG_TO_RAD));

				vertices_1.push_back(base);
				vertices_2.push_back(target);

				ofDrawLine(base, target);
			}

			ofBeginShape();
			ofVertices(vertices_1);
			ofEndShape(true);

			ofBeginShape();
			ofVertices(vertices_2);
			ofEndShape(true);

			deg_span -= 12;
		}
	}

	/*
	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());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofNoFill();

ofSetLineWidth(2);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

auto deg_span = 60;

for (int x = -180; x <= 180; x += 360) {

for (int y = -180; y <= 180; y += 360) {

vector<glm::vec2> vertices_1;

vector<glm::vec2> vertices_2;

auto base_radius = 90;

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

auto deg_start = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -360, 360);

for (int deg = deg_start; deg < deg_start + 360; deg += deg_span) {

auto noise_radius = ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.05), 0, 1, 20, 180);

auto noise_deg = ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.005), 0, 1, -360, 360);

auto base = glm::vec2(x + base_radius * cos(deg * DEG_TO_RAD), y + base_radius * sin(deg * DEG_TO_RAD));

auto target = glm::vec2(x + noise_radius * cos((deg + noise_deg) * DEG_TO_RAD), y + noise_radius * sin((deg + noise_deg) * DEG_TO_RAD));

vertices_1.push_back(base);

vertices_2.push_back(target);

ofDrawLine(base, target);

}

ofBeginShape();

ofVertices(vertices_1);

ofEndShape(true);

ofBeginShape();

ofVertices(vertices_2);

ofEndShape(true);

deg_span -= 12;

}

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/Insta20250725

2025年7月
月	火	水	木	金	土	日
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21	22	23	24	25	26	27
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