プログラミング de 落描き – ページ 495 – クリエイティブ・コーディングによる生成物とソース

2020年3月30日2020年3月30日

Vertices crawling on a sphere. openFrameworks

[ Video ]

[ About ]
球体上の座標で移動する頂点。
互いに接近するように線を引く。

Vertices that move in coordinates on a sphere.
Draw a line when they are close to each other.

[ 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;
	ofMesh 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 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;

ofMesh frame;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetColor(39);
	ofEnableDepthTest();

	this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}
//--------------------------------------------------------------
void ofApp::update() {

	ofSeedRandom(39);

	this->frame.clear();
	for (int i = 0; i < 35; i++) {

		auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
		for (int len = 0; len < 50; len++) {

			auto vertex = glm::vec3(
				ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + len) * 0.008), 0, 1, -200, 200),
				ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + len) * 0.008), 0, 1, -200, 200),
				ofMap(ofNoise(noise_seed.z, (ofGetFrameNum() + len) * 0.008), 0, 1, -200, 200));
			vertex = glm::normalize(vertex) * 200;
			this->frame.addVertex(vertex);
		}
	}

	for (int i = 0; i < this->frame.getNumVertices(); i++) {

		for (int k = i + 1; k < this->frame.getNumVertices(); k++) {

			auto d = glm::distance(this->frame.getVertex(i), this->frame.getVertex(k));
			if (d < 30) {

				this->frame.addIndex(i);
				this->frame.addIndex(k);
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.5);

	this->frame.drawWireframe();

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->frame.clear();

for (int i = 0; i < 35; i++) {

auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

for (int len = 0; len < 50; len++) {

auto vertex = glm::vec3(

ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + len) * 0.008), 0, 1, -200, 200),

ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + len) * 0.008), 0, 1, -200, 200),

ofMap(ofNoise(noise_seed.z, (ofGetFrameNum() + len) * 0.008), 0, 1, -200, 200));

vertex = glm::normalize(vertex) * 200;

this->frame.addVertex(vertex);

}

for (int i = 0; i < this->frame.getNumVertices(); i++) {

for (int k = i + 1; k < this->frame.getNumVertices(); k++) {

auto d = glm::distance(this->frame.getVertex(i), this->frame.getVertex(k));

if (d < 30) {

this->frame.addIndex(i);

this->frame.addIndex(k);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.5);

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200330

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2020年3月29日

Alignment and Dismemberment. openFrameworks

[ Video ]

[ About ]
整列とバラバラを繰り返す正方形。

Squares that repeat alignment and dismemberment.

[ 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(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(0.25);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateX(180);
	ofRotateY(ofGetFrameNum() * 0.5);

	int half_len = 25;

	ofMesh base_mesh;
	base_mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
	base_mesh.addVertex(glm::vec3(-half_len, -half_len, half_len));
	base_mesh.addVertex(glm::vec3(half_len, -half_len, half_len));
	base_mesh.addVertex(glm::vec3(half_len, half_len, half_len));
	base_mesh.addVertex(glm::vec3(-half_len, half_len, half_len));
	base_mesh.addVertex(glm::vec3(-half_len, -half_len, -half_len));
	base_mesh.addVertex(glm::vec3(half_len, -half_len, -half_len));
	base_mesh.addVertex(glm::vec3(half_len, half_len, -half_len));
	base_mesh.addVertex(glm::vec3(-half_len, half_len, -half_len));

	for (int i = 0; i < base_mesh.getNumVertices(); i++) {

		base_mesh.setVertex(i, base_mesh.getVertex(i) * 0.65);
	}

	base_mesh.addIndex(0); base_mesh.addIndex(1);
	base_mesh.addIndex(3); base_mesh.addIndex(2);
	base_mesh.addIndex(4); base_mesh.addIndex(5);
	base_mesh.addIndex(7); base_mesh.addIndex(6);

	base_mesh.addIndex(0); base_mesh.addIndex(3);
	base_mesh.addIndex(1); base_mesh.addIndex(2);
	base_mesh.addIndex(4); base_mesh.addIndex(7);
	base_mesh.addIndex(5); base_mesh.addIndex(6);

	base_mesh.addIndex(0); base_mesh.addIndex(4);
	base_mesh.addIndex(1); base_mesh.addIndex(5);
	base_mesh.addIndex(2); base_mesh.addIndex(6);
	base_mesh.addIndex(3); base_mesh.addIndex(7);

	for (int x = -100; x <= 100; x += 50) {

		for (int y = -100; y <= 100; y += 50) {

			for (int z = -100; z <= 100; z += 50) {
				
				int param = (ofGetFrameNum() * 3 + y * 7) % 400;
				if (param > 300) { param = 0; }
				else if (param > 200) { param = ofMap(param, 200, 300, 100, 0); }
				else if (param > 100) { param = 100; }

				auto noise_mesh = base_mesh;
				for (int i = 0; i < base_mesh.getNumVertices(); i++) {

					auto location = glm::vec3(
						ofMap(ofNoise(ofRandom(10000)), 0, 1, -half_len, half_len),
						ofMap(ofNoise(ofRandom(10000)), 0, 1, -half_len, half_len),
						ofMap(ofNoise(ofRandom(10000)), 0, 1, -half_len, half_len));

					noise_mesh.setVertex(i, location);
				}

				for (int i = 0; i < base_mesh.getNumVertices(); i++) {

					auto distance = base_mesh.getVertex(i) - noise_mesh.getVertex(i);
					auto d = (distance / 100) * param;

					noise_mesh.setVertex(i, base_mesh.getVertex(i) - d);
				}

				ofPushMatrix();
				ofTranslate(x, y, z);

				noise_mesh.draw();
				for (auto& vertex : noise_mesh.getVertices()) {

					ofDrawSphere(vertex, 1);
				}

				ofPopMatrix();
			}
		}
	}

	this->cam.end();
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(0.25);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

ofRotateY(ofGetFrameNum() * 0.5);

int half_len = 25;

ofMesh base_mesh;

base_mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

base_mesh.addVertex(glm::vec3(-half_len, -half_len, half_len));

base_mesh.addVertex(glm::vec3(half_len, -half_len, half_len));

base_mesh.addVertex(glm::vec3(half_len, half_len, half_len));

base_mesh.addVertex(glm::vec3(-half_len, half_len, half_len));

base_mesh.addVertex(glm::vec3(-half_len, -half_len, -half_len));

base_mesh.addVertex(glm::vec3(half_len, -half_len, -half_len));

base_mesh.addVertex(glm::vec3(half_len, half_len, -half_len));

base_mesh.addVertex(glm::vec3(-half_len, half_len, -half_len));

for (int i = 0; i < base_mesh.getNumVertices(); i++) {

base_mesh.setVertex(i, base_mesh.getVertex(i) * 0.65);

}

base_mesh.addIndex(0); base_mesh.addIndex(1);

base_mesh.addIndex(3); base_mesh.addIndex(2);

base_mesh.addIndex(4); base_mesh.addIndex(5);

base_mesh.addIndex(7); base_mesh.addIndex(6);

base_mesh.addIndex(0); base_mesh.addIndex(3);

base_mesh.addIndex(1); base_mesh.addIndex(2);

base_mesh.addIndex(4); base_mesh.addIndex(7);

base_mesh.addIndex(5); base_mesh.addIndex(6);

base_mesh.addIndex(0); base_mesh.addIndex(4);

base_mesh.addIndex(1); base_mesh.addIndex(5);

base_mesh.addIndex(2); base_mesh.addIndex(6);

base_mesh.addIndex(3); base_mesh.addIndex(7);

for (int x = -100; x <= 100; x += 50) {

for (int y = -100; y <= 100; y += 50) {

for (int z = -100; z <= 100; z += 50) {

int param = (ofGetFrameNum() * 3 + y * 7) % 400;

if (param > 300) { param = 0; }

else if (param > 200) { param = ofMap(param, 200, 300, 100, 0); }

else if (param > 100) { param = 100; }

auto noise_mesh = base_mesh;

for (int i = 0; i < base_mesh.getNumVertices(); i++) {

auto location = glm::vec3(

ofMap(ofNoise(ofRandom(10000)), 0, 1, -half_len, half_len),

ofMap(ofNoise(ofRandom(10000)), 0, 1, -half_len, half_len));

noise_mesh.setVertex(i, location);

}

for (int i = 0; i < base_mesh.getNumVertices(); i++) {

auto distance = base_mesh.getVertex(i) - noise_mesh.getVertex(i);

auto d = (distance / 100) * param;

noise_mesh.setVertex(i, base_mesh.getVertex(i) - d);

}

ofPushMatrix();

ofTranslate(x, y, z);

noise_mesh.draw();

for (auto& vertex : noise_mesh.getVertices()) {

ofDrawSphere(vertex, 1);

}

ofPopMatrix();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200329

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2020年3月28日

Hexagonal torus. openFrameworks

[ Video ]

[ About ]
六角形を円に配置してそれぞれ回す。

Arrange the hexagons in a circle and turn each one.

[ 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;
	ofMesh face_mesh, frame_mesh;
};

#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;

ofMesh face_mesh, frame_mesh;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetLineWidth(1.5);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

	this->face_mesh.clear();
	this->frame_mesh.clear();

	auto R = 200;
	auto r = 65;
	auto v_span = 5;
	auto u_span = 60;
	for (auto v = 0; v < 360; v += v_span) {

		auto u_start = ofMap(ofNoise(cos(v * DEG_TO_RAD) * 0.5, sin(v * DEG_TO_RAD) * 0.5, ofGetFrameNum() * 0.005), 0, 1, -180, 180);
		for (auto u = u_start; u < u_start + 360; u += u_span) {

			vector<glm::vec3> vertices;
			vertices.push_back(this->make_point(R, r, u, v));
			vertices.push_back(this->make_point(R, r, u + u_span, v));
			vertices.push_back(this->make_point(R, r, u + u_span, v + v_span));
			vertices.push_back(this->make_point(R, r, u, v + v_span));

			int index = this->face_mesh.getNumVertices();
			this->face_mesh.addVertices(vertices);
			this->frame_mesh.addVertices(vertices);

			this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 1); this->face_mesh.addIndex(index + 2);
			this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 2); this->face_mesh.addIndex(index + 3);

			this->frame_mesh.addIndex(index + 0); this->frame_mesh.addIndex(index + 1);
			this->frame_mesh.addIndex(index + 1); this->frame_mesh.addIndex(index + 2);
			this->frame_mesh.addIndex(index + 2); this->frame_mesh.addIndex(index + 3);
			this->frame_mesh.addIndex(index + 3); this->frame_mesh.addIndex(index + 0);
		}
	}
}

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

	this->cam.begin();
	ofRotateX(300);

	ofSetColor(39);
	this->face_mesh.drawFaces();

	ofSetColor(239);
	this->frame_mesh.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());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(1.5);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face_mesh.clear();

this->frame_mesh.clear();

auto R = 200;

auto r = 65;

auto v_span = 5;

auto u_span = 60;

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

auto u_start = ofMap(ofNoise(cos(v * DEG_TO_RAD) * 0.5, sin(v * DEG_TO_RAD) * 0.5, ofGetFrameNum() * 0.005), 0, 1, -180, 180);

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

vector<glm::vec3> vertices;

vertices.push_back(this->make_point(R, r, u, v));

vertices.push_back(this->make_point(R, r, u + u_span, v));

vertices.push_back(this->make_point(R, r, u + u_span, v + v_span));

vertices.push_back(this->make_point(R, r, u, v + v_span));

int index = this->face_mesh.getNumVertices();

this->face_mesh.addVertices(vertices);

this->frame_mesh.addVertices(vertices);

this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 1); this->face_mesh.addIndex(index + 2);

this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 2); this->face_mesh.addIndex(index + 3);

this->frame_mesh.addIndex(index + 0); this->frame_mesh.addIndex(index + 1);

this->frame_mesh.addIndex(index + 1); this->frame_mesh.addIndex(index + 2);

this->frame_mesh.addIndex(index + 2); this->frame_mesh.addIndex(index + 3);

this->frame_mesh.addIndex(index + 3); this->frame_mesh.addIndex(index + 0);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(300);

ofSetColor(39);

this->face_mesh.drawFaces();

ofSetColor(239);

this->frame_mesh.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/Insta20200328

[ほしいものリスト]
Amazon

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