プログラミング de 落描き – ページ 242 – クリエイティブ・コーディングによる生成物とソース

2023年9月29日

Stretch and shrink.

[ Video ]

[ About ]
伸びて縮む。

[ 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;
};

#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;

};

#include "ofApp.h"

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

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

	ofBackground(39);
	ofSetColor(255);
	ofSetLineWidth(1.5);
}
//--------------------------------------------------------------
void ofApp::update() {

}

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

	this->cam.begin();
	ofRotateX(120);
	ofTranslate(0, 0, -70);
	ofRotateZ(ofGetFrameNum());

	auto radius = 250;
	int deg_span = 3;

	auto target_deg = ofGetFrameNum() % 360;
	for (int deg = 0; deg < 360; deg += deg_span) {

		auto location = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0);
		auto len = ofMap(ofNoise(glm::vec4(location * 0.005, ofGetFrameNum() * 0.05)), 0, 1, -200, 200);

		auto location_1 = glm::vec3((radius + len * 0.65) * cos(deg * DEG_TO_RAD), (radius + len * 0.65) * sin(deg * DEG_TO_RAD), 0);
		auto location_2 = glm::vec3((radius - len * 0.65) * cos(deg * DEG_TO_RAD), (radius - len * 0.65) * sin(deg * DEG_TO_RAD), 0);

		ofDrawLine(location_1, location_2);
		ofDrawSphere(location_1, 3);
		ofDrawBox(location_2, 4);
	}

	this->cam.end();
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openFrameworks");

ofBackground(39);

ofSetColor(255);

ofSetLineWidth(1.5);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(120);

ofTranslate(0, 0, -70);

ofRotateZ(ofGetFrameNum());

auto radius = 250;

int deg_span = 3;

auto target_deg = ofGetFrameNum() % 360;

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

auto location = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0);

auto len = ofMap(ofNoise(glm::vec4(location * 0.005, ofGetFrameNum() * 0.05)), 0, 1, -200, 200);

auto location_1 = glm::vec3((radius + len * 0.65) * cos(deg * DEG_TO_RAD), (radius + len * 0.65) * sin(deg * DEG_TO_RAD), 0);

auto location_2 = glm::vec3((radius - len * 0.65) * cos(deg * DEG_TO_RAD), (radius - len * 0.65) * sin(deg * DEG_TO_RAD), 0);

ofDrawLine(location_1, location_2);

ofDrawSphere(location_1, 3);

ofDrawBox(location_2, 4);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230929

2023年9月28日

Line bundle.

[ Video ]

[ About ]
線の束。

[ 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(0);
	ofSetLineWidth(1);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
}
//--------------------------------------------------------------
void ofApp::update() {

	ofSeedRandom(39);
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	ofSetColor(16, 16, 16);
	for (int x = -100; x <= 100; x += 5) {

		for (int y = -100; y <= 100; y += 5) {

			vector<glm::vec2> vertices;
			vertices.push_back(glm::vec2(x, y));
			for (int i = 0; i < 120; i++) {

				auto deg = ofMap(ofNoise(vertices.back().x * 0.0008, vertices.back().y * 0.0008 + ofGetFrameNum() * 0.01), 0, 1, -360, 360);
				auto vertex = vertices.back() + glm::vec2(2 * cos(deg * DEG_TO_RAD), 2 * sin(deg * DEG_TO_RAD));
				vertices.push_back(vertex);
			}

			ofNoFill();
			ofBeginShape();
			ofVertices(vertices);
			ofEndShape();
		}
	}
}


//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(1);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

ofSetColor(16, 16, 16);

for (int x = -100; x <= 100; x += 5) {

for (int y = -100; y <= 100; y += 5) {

vector<glm::vec2> vertices;

vertices.push_back(glm::vec2(x, y));

for (int i = 0; i < 120; i++) {

auto deg = ofMap(ofNoise(vertices.back().x * 0.0008, vertices.back().y * 0.0008 + ofGetFrameNum() * 0.01), 0, 1, -360, 360);

auto vertex = vertices.back() + glm::vec2(2 * cos(deg * DEG_TO_RAD), 2 * sin(deg * DEG_TO_RAD));

vertices.push_back(vertex);

}

ofNoFill();

ofBeginShape();

ofVertices(vertices);

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230928

2023年9月27日

Leak out from torus.

[ Video ]

[ About ]
トーラスから漏れ出る。

[ 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) {};

	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(39);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

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

	int R = 235;
	int r = 60;
	int v_span = 4;
	int u_span = 8;

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

	ofColor face_color = ofColor(0);
	ofColor line_color = ofColor(255);

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

		for (int u = 0; u < 360; u += u_span) {

			auto noise_value = ofNoise(glm::vec4(this->make_point(R, 10, u, v) * 0.1, ofGetFrameNum() * 0.05));
			if (noise_value < 0.3) { 
			
				line.addVertex(this->make_point(R, 0, u, v));
				line.addVertex(this->make_point(R, 150, u, v));

				line.addColor(ofColor(255, 255, 0));
				line.addColor(ofColor(255, 255, 0, 0));

				line.addIndex(line.getNumVertices() - 1); 
				line.addIndex(line.getNumVertices() - 2);
			}
			else {

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

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

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

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

		}
	}

	face.drawFaces();
	line.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
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(39);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 1.44);

int R = 235;

int r = 60;

int v_span = 4;

int u_span = 8;

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

ofColor face_color = ofColor(0);

ofColor line_color = ofColor(255);

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

for (int u = 0; u < 360; u += u_span) {

auto noise_value = ofNoise(glm::vec4(this->make_point(R, 10, u, v) * 0.1, ofGetFrameNum() * 0.05));

if (noise_value < 0.3) {

line.addVertex(this->make_point(R, 0, u, v));

line.addVertex(this->make_point(R, 150, u, v));

line.addColor(ofColor(255, 255, 0));

line.addColor(ofColor(255, 255, 0, 0));

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

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

}

else {

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

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

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

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

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

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

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

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

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() - 4);

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

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

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

}

face.drawFaces();

line.drawWireframe();

this->cam.end();

}

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

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/Insta20230927

2025年9月
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