openFrameworks – ページ 685 – プログラミング de 落描き

2019年11月20日2019年11月20日

Spiral cube. openFrameworks

[ Video ]

[ About ]
立方体でらせんを考えてみる。

Spiral cube.

[ 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(30);
	ofSetWindowTitle("openframeworks");

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

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

}

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

	this->cam.begin();

	auto len = 150;
	auto gap = 0.05;
	vector<glm::vec3> vertices;
	for (int i = 0; i < 100; i++) {

		if (i == 0) {

			vertices.push_back(glm::vec3(-len, len, -len));
			vertices.push_back(glm::vec3(len, len, -len));
			vertices.push_back(glm::vec3(len, len, len));
			vertices.push_back(glm::vec3(-len, len, len));

			vertices.push_back(glm::vec3(-len, -len, -len));
			vertices.push_back(glm::vec3(len, -len, -len));
			vertices.push_back(glm::vec3(len, -len, len));
			vertices.push_back(glm::vec3(-len, -len, len));
		}
		else {

			vector<glm::vec3> tmp;

			tmp.push_back((vertices[1] - vertices[0]) * gap + (vertices[4] - vertices[0]) * gap * 0.5 + vertices[0]);
			tmp.push_back((vertices[2] - vertices[1]) * gap + (vertices[5] - vertices[1]) * gap * 0.5 + vertices[1]);
			tmp.push_back((vertices[3] - vertices[2]) * gap + (vertices[6] - vertices[2]) * gap * 0.5 + vertices[2]);
			tmp.push_back((vertices[0] - vertices[3]) * gap + (vertices[7] - vertices[3]) * gap * 0.5 + vertices[3]);

			tmp.push_back((vertices[5] - vertices[4]) * gap + (vertices[0] - vertices[4]) * gap * 0.5 + vertices[4]);
			tmp.push_back((vertices[6] - vertices[5]) * gap + (vertices[1] - vertices[5]) * gap * 0.5 + vertices[5]);
			tmp.push_back((vertices[7] - vertices[6]) * gap + (vertices[2] - vertices[6]) * gap * 0.5 + vertices[6]);
			tmp.push_back((vertices[4] - vertices[7]) * gap + (vertices[3] - vertices[7]) * gap * 0.5 + vertices[7]);

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

				ofDrawLine(vertices[i], tmp[i]);
			}

			vertices = tmp;
		}

		if (i == 0 || ofGetFrameNum() % 20 == i % 20) {

			ofSetLineWidth(2);

			ofDrawLine(vertices[0], vertices[1]);
			ofDrawLine(vertices[1], vertices[2]);
			ofDrawLine(vertices[2], vertices[3]);
			ofDrawLine(vertices[3], vertices[0]);

			ofDrawLine(vertices[4], vertices[5]);
			ofDrawLine(vertices[5], vertices[6]);
			ofDrawLine(vertices[6], vertices[7]);
			ofDrawLine(vertices[7], vertices[4]);

			ofDrawLine(vertices[0], vertices[4]);
			ofDrawLine(vertices[1], vertices[5]);
			ofDrawLine(vertices[2], vertices[6]);
			ofDrawLine(vertices[3], vertices[7]);

			for (auto& vertex : vertices) {

				ofDrawSphere(vertex, ofMap(i, 0, 100, 3, 0.5));
			}

			ofSetLineWidth(1);
		}
	}

	this->cam.end();
}

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

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

100

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(2);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

auto len = 150;

auto gap = 0.05;

vector<glm::vec3> vertices;

for (int i = 0; i < 100; i++) {

if (i == 0) {

vertices.push_back(glm::vec3(-len, len, -len));

vertices.push_back(glm::vec3(len, len, -len));

vertices.push_back(glm::vec3(len, len, len));

vertices.push_back(glm::vec3(-len, len, len));

vertices.push_back(glm::vec3(-len, -len, -len));

vertices.push_back(glm::vec3(len, -len, -len));

vertices.push_back(glm::vec3(len, -len, len));

vertices.push_back(glm::vec3(-len, -len, len));

}

else {

vector<glm::vec3> tmp;

tmp.push_back((vertices[1] - vertices[0]) * gap + (vertices[4] - vertices[0]) * gap * 0.5 + vertices[0]);

tmp.push_back((vertices[2] - vertices[1]) * gap + (vertices[5] - vertices[1]) * gap * 0.5 + vertices[1]);

tmp.push_back((vertices[3] - vertices[2]) * gap + (vertices[6] - vertices[2]) * gap * 0.5 + vertices[2]);

tmp.push_back((vertices[0] - vertices[3]) * gap + (vertices[7] - vertices[3]) * gap * 0.5 + vertices[3]);

tmp.push_back((vertices[5] - vertices[4]) * gap + (vertices[0] - vertices[4]) * gap * 0.5 + vertices[4]);

tmp.push_back((vertices[6] - vertices[5]) * gap + (vertices[1] - vertices[5]) * gap * 0.5 + vertices[5]);

tmp.push_back((vertices[7] - vertices[6]) * gap + (vertices[2] - vertices[6]) * gap * 0.5 + vertices[6]);

tmp.push_back((vertices[4] - vertices[7]) * gap + (vertices[3] - vertices[7]) * gap * 0.5 + vertices[7]);

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

ofDrawLine(vertices[i], tmp[i]);

}

vertices = tmp;

}

if (i == 0 || ofGetFrameNum() % 20 == i % 20) {

ofSetLineWidth(2);

ofDrawLine(vertices[0], vertices[1]);

ofDrawLine(vertices[1], vertices[2]);

ofDrawLine(vertices[2], vertices[3]);

ofDrawLine(vertices[3], vertices[0]);

ofDrawLine(vertices[4], vertices[5]);

ofDrawLine(vertices[5], vertices[6]);

ofDrawLine(vertices[6], vertices[7]);

ofDrawLine(vertices[7], vertices[4]);

ofDrawLine(vertices[0], vertices[4]);

ofDrawLine(vertices[1], vertices[5]);

ofDrawLine(vertices[2], vertices[6]);

ofDrawLine(vertices[3], vertices[7]);

for (auto& vertex : vertices) {

ofDrawSphere(vertex, ofMap(i, 0, 100, 3, 0.5));

}

ofSetLineWidth(1);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191120

2019年11月19日

Strap is flapping. openFrameworks

[ Video ]

[ About ]
はためく帯。

Strap is flapping.

[ 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;
	vector<ofMesh> face_mesh_list, frame_mesh_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) {};

ofEasyCam cam;

vector<ofMesh> face_mesh_list, frame_mesh_list;

};

#include "ofApp.h"

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

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

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

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

	this->face_mesh_list.clear();
	this->frame_mesh_list.clear();

	auto width = 15;
	for (auto x = -250; x <= 250; x += width * 2) {

		ofMesh face_mesh, frame_mesh;
		frame_mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
		for (auto y = -200; y < 200; y += 1) {

			int index = face_mesh.getVertices().size();
			auto z_1 = ofMap(ofNoise(x * 0.015, y * 0.003 + ofGetFrameNum() * 0.005), 0, 1, -50, 50);
			auto z_2 = ofMap(ofNoise(x * 0.015, (y + 1) * 0.003 + ofGetFrameNum() * 0.005), 0, 1, -50, 50);

			face_mesh.addVertex(glm::vec3(x - width * 0.5, y, z_1));
			face_mesh.addVertex(glm::vec3(x + width * 0.5, y, z_1));
			face_mesh.addVertex(glm::vec3(x + width * 0.5, y + 1, z_2));
			face_mesh.addVertex(glm::vec3(x - width * 0.5, y + 1, z_2));

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

			frame_mesh.addVertex(glm::vec3(x - width * 0.5, y, z_1));
			frame_mesh.addVertex(glm::vec3(x + width * 0.5, y, z_1));
			frame_mesh.addVertex(glm::vec3(x + width * 0.5, y + 1, z_2));
			frame_mesh.addVertex(glm::vec3(x - width * 0.5, y + 1, z_2));

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

		frame_mesh.addIndex(0); frame_mesh.addIndex(1);
		frame_mesh.addIndex(frame_mesh.getVertices().size() - 2); frame_mesh.addIndex(frame_mesh.getVertices().size() - 1);

		this->face_mesh_list.push_back(face_mesh);
		this->frame_mesh_list.push_back(frame_mesh);
	}
}

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

	this->cam.begin();

	ofSetColor(39);
	for (auto& face_mesh : this->face_mesh_list) {

		face_mesh.drawFaces();
	}

	ofSetColor(239);
	for (auto& frame_mesh : this->frame_mesh_list) {

		frame_mesh.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();

}

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

void ofApp::update() {

this->face_mesh_list.clear();

this->frame_mesh_list.clear();

auto width = 15;

for (auto x = -250; x <= 250; x += width * 2) {

ofMesh face_mesh, frame_mesh;

frame_mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

for (auto y = -200; y < 200; y += 1) {

int index = face_mesh.getVertices().size();

auto z_1 = ofMap(ofNoise(x * 0.015, y * 0.003 + ofGetFrameNum() * 0.005), 0, 1, -50, 50);

auto z_2 = ofMap(ofNoise(x * 0.015, (y + 1) * 0.003 + ofGetFrameNum() * 0.005), 0, 1, -50, 50);

face_mesh.addVertex(glm::vec3(x - width * 0.5, y, z_1));

face_mesh.addVertex(glm::vec3(x + width * 0.5, y, z_1));

face_mesh.addVertex(glm::vec3(x + width * 0.5, y + 1, z_2));

face_mesh.addVertex(glm::vec3(x - width * 0.5, y + 1, z_2));

face_mesh.addIndex(index + 0); face_mesh.addIndex(index + 1); face_mesh.addIndex(index + 2);

face_mesh.addIndex(index + 0); face_mesh.addIndex(index + 2); face_mesh.addIndex(index + 3);

frame_mesh.addVertex(glm::vec3(x - width * 0.5, y, z_1));

frame_mesh.addVertex(glm::vec3(x + width * 0.5, y, z_1));

frame_mesh.addVertex(glm::vec3(x + width * 0.5, y + 1, z_2));

frame_mesh.addVertex(glm::vec3(x - width * 0.5, y + 1, z_2));

frame_mesh.addIndex(index + 0); frame_mesh.addIndex(index + 3);

frame_mesh.addIndex(index + 1); frame_mesh.addIndex(index + 2);

}

frame_mesh.addIndex(0); frame_mesh.addIndex(1);

frame_mesh.addIndex(frame_mesh.getVertices().size() - 2); frame_mesh.addIndex(frame_mesh.getVertices().size() - 1);

this->face_mesh_list.push_back(face_mesh);

this->frame_mesh_list.push_back(frame_mesh);

}

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

void ofApp::draw() {

this->cam.begin();

ofSetColor(39);

for (auto& face_mesh : this->face_mesh_list) {

face_mesh.drawFaces();

}

ofSetColor(239);

for (auto& frame_mesh : this->frame_mesh_list) {

frame_mesh.drawWireframe();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191119

2019年11月18日2019年11月18日

Octagon spiral. openFrameworks

[ Video ]

[ About ]
昨日のProcessing勉強会で話題になったサンプルの応用例。辺ごとにgapの値を変えれば歪みました。

Octagon spiral.

[ 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) {};

	int gon;
	vector<float> gap_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) {};

int gon;

vector<float> gap_list;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetColor(255);
	ofNoFill();

	this->gon = 8;
	for (auto i = 0; i < this->gon; i++) {

		this->gap_list.push_back(0);
	}
}

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

	ofSeedRandom(39);
	for (auto& gap : this->gap_list) {

		gap = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.002), 0, 1, 0.01, 0.3);
	}
}

//--------------------------------------------------------------
void ofApp::draw() {
	
	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

	auto radius = 350;
	int deg_span = 360 / this->gon;
	vector<glm::vec2> vertices;
	auto first = true;
	while(true) {

		if(first){

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

				vertices.push_back(glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));
			}

			first = false;
		}
		else {

			vector<glm::vec2> tmp;
			for (auto k = 0; k < vertices.size(); k++) {

				tmp.push_back(vertices[k] + (vertices[(k + 1) % vertices.size()] - vertices[k]) * this->gap_list[k]);
			}
			vertices = tmp;
		}

		ofBeginShape();
		ofVertices(vertices);
		ofEndShape(true);

		if (glm::distance(vertices[0], vertices[1]) < 1) {
			
			break;
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(0);

ofSetColor(255);

ofNoFill();

this->gon = 8;

for (auto i = 0; i < this->gon; i++) {

this->gap_list.push_back(0);

}

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

void ofApp::update() {

ofSeedRandom(39);

for (auto& gap : this->gap_list) {

gap = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.002), 0, 1, 0.01, 0.3);

}

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

void ofApp::draw() {

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

auto radius = 350;

int deg_span = 360 / this->gon;

vector<glm::vec2> vertices;

auto first = true;

while(true) {

if(first){

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

vertices.push_back(glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));

}

first = false;

}

else {

vector<glm::vec2> tmp;

for (auto k = 0; k < vertices.size(); k++) {

tmp.push_back(vertices[k] + (vertices[(k + 1) % vertices.size()] - vertices[k]) * this->gap_list[k]);

}

vertices = tmp;

}

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

if (glm::distance(vertices[0], vertices[1]) < 1) {

break;

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191118

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