openFrameworks – ページ 797 – プログラミング de 落描き

2019年1月27日2019年2月7日

Torus knot. openFrameworks

[ Video ]

[ About ]
「数学デッサン教室描いて楽しむ数学のかたち」という本に記載のある数式を元にトーラス結び目(7, 2)をopenFrameworksで描写しました

Torus knot.

[ 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 draw_torus(float R, float r, float p, float q);
	glm::vec3 make_point(float R, float r, float t, float p, float q);

	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) {};

void draw_torus(float R, float r, float p, float q);

glm::vec3 make_point(float R, float r, float t, float p, float q);

ofEasyCam cam;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetLineWidth(5);
	ofEnableDepthTest();
}

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

}

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

	this->cam.begin();

	this->draw_torus(200, 60, 7, 2);

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::draw_torus(float R, float r, float p, float q) {

	ofColor color;
	for (int t_start = ofGetFrameNum() * 0.75; t_start < ofGetFrameNum() * 0.75 + 360; t_start += 30) {

		ofSetColor(39);
		for (int t = t_start; t <= t_start + 20; t++) {

			ofDrawLine(this->make_point(R, r, t, p, q), this->make_point(R, r, t + 1, p, q));
		}

		color.setHsb(ofMap(t_start % 360, 0, 360, 0, 255), 255, 255);
		ofSetColor(color);

		ofDrawSphere(this->make_point(R, r, t_start + 25, p, q), 10);
	}
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_point(float R, float r, float t, float p, float q) {

	// 数学デッサン教室 描いて楽しむ数学たち　P.39
	float x = (R + r * cos(p * t * DEG_TO_RAD)) * cos(q * t * DEG_TO_RAD);
	float y = (R + r * cos(p * t * DEG_TO_RAD)) * sin(q * t * DEG_TO_RAD);
	float z = r * sin(p * t * DEG_TO_RAD);

	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(5);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

this->draw_torus(200, 60, 7, 2);

this->cam.end();

}

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

void ofApp::draw_torus(float R, float r, float p, float q) {

ofColor color;

for (int t_start = ofGetFrameNum() * 0.75; t_start < ofGetFrameNum() * 0.75 + 360; t_start += 30) {

ofSetColor(39);

for (int t = t_start; t <= t_start + 20; t++) {

ofDrawLine(this->make_point(R, r, t, p, q), this->make_point(R, r, t + 1, p, q));

}

color.setHsb(ofMap(t_start % 360, 0, 360, 0, 255), 255, 255);

ofSetColor(color);

ofDrawSphere(this->make_point(R, r, t_start + 25, p, q), 10);

}

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

glm::vec3 ofApp::make_point(float R, float r, float t, float p, float q) {

// 数学デッサン教室描いて楽しむ数学たち　P.39

float x = (R + r * cos(p * t * DEG_TO_RAD)) * cos(q * t * DEG_TO_RAD);

float y = (R + r * cos(p * t * DEG_TO_RAD)) * sin(q * t * DEG_TO_RAD);

float z = r * sin(p * t * DEG_TO_RAD);

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

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190127

2019年1月25日2019年1月25日

Split circles. openFrameworks

[ Video ]

[ About ]
ノイズ関数を使って円を分割

Split circles from Perlin Noise.

[ 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(60);
	ofSetWindowTitle("openFrameworks");

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

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

	ofSeedRandom(39);
}

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

	int span = 144;
	for (int x = span * 0.5; x < ofGetWidth(); x += span) {

		for (int y = span * 0.5; y < ofGetHeight(); y += span) {

			ofPushMatrix();
			ofTranslate(x, y);
			ofRotateDeg(ofRandom(360));

			int radius = 60;
			int deg_span = 1;
			float noise_seed = ofRandom(1000);
			vector<int> degs;
			for (int deg = 0; deg < 180; deg += deg_span) {

				float noise_value = ofNoise((noise_seed + deg) * 0.04, ofGetFrameNum() * 0.01);
				if (noise_value > 0.4) {

					degs.push_back(deg);
				}
				else {

					if (degs.size() > 0) {

						vector<ofPoint> vertices;
						for (int i = 0; i < degs.size(); i++) {

							vertices.push_back(ofPoint(radius * cos(degs[i] * DEG_TO_RAD), radius * sin(degs[i] * DEG_TO_RAD)));
						}

						for (int i = degs.size() - 1; i >= 0; i--) {

							vertices.push_back(ofPoint(radius * cos((360 - degs[i]) * DEG_TO_RAD), radius * sin((360 - degs[i]) * DEG_TO_RAD)));
						}

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

						degs.clear();
					}
				}
			}

			ofPopMatrix();
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetColor(39);

ofNoFill();

ofSetLineWidth(2);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

int span = 144;

for (int x = span * 0.5; x < ofGetWidth(); x += span) {

for (int y = span * 0.5; y < ofGetHeight(); y += span) {

ofPushMatrix();

ofTranslate(x, y);

ofRotateDeg(ofRandom(360));

int radius = 60;

int deg_span = 1;

float noise_seed = ofRandom(1000);

vector<int> degs;

for (int deg = 0; deg < 180; deg += deg_span) {

float noise_value = ofNoise((noise_seed + deg) * 0.04, ofGetFrameNum() * 0.01);

if (noise_value > 0.4) {

degs.push_back(deg);

}

else {

if (degs.size() > 0) {

vector<ofPoint> vertices;

for (int i = 0; i < degs.size(); i++) {

vertices.push_back(ofPoint(radius * cos(degs[i] * DEG_TO_RAD), radius * sin(degs[i] * DEG_TO_RAD)));

}

for (int i = degs.size() - 1; i >= 0; i--) {

vertices.push_back(ofPoint(radius * cos((360 - degs[i]) * DEG_TO_RAD), radius * sin((360 - degs[i]) * DEG_TO_RAD)));

}

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

degs.clear();

}

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190125

2019年1月24日2019年1月24日

Overlapping circles. openFrameworks

[ Video ]

[ About ]
複数の円達。重なると(距離に応じたサイズの)相手の複製を自身の内部に作ります

Overlapping circles.

[ 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) {};

	vector<glm::vec2> locations;
	vector<ofColor> colors;
};

#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) {};

vector<glm::vec2> locations;

vector<ofColor> colors;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetLineWidth(2);
	ofSetCircleResolution(36);
}

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

	ofSeedRandom(39);
	this->locations.clear();
	this->colors.clear();

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

		glm::vec2 location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, 0, ofGetHeight()));
		this->locations.push_back(location);
		
		color.setHsb(ofRandom(255), 255, 230);
		this->colors.push_back(color);
	}
}

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

	float radius = 30;
	for (int i = 0; i < this->locations.size(); i++) {

		ofFill();
		ofSetColor(239);
		ofDrawCircle(this->locations[i], radius);

		ofNoFill();
		ofSetColor(this->colors[i]);
		ofDrawCircle(this->locations[i], radius);

		vector<glm::vec2> near_locations;
		for (int j = 0; j < this->locations.size(); j++) {

			if (i == j) { continue; }

			glm::vec2 distance = this->locations[i] - this->locations[j];
			float distance_lenght = glm::length(distance);
			if (distance_lenght < radius * 2) {

				ofSetColor(this->colors[j]);
				ofDrawCircle(this->locations[i], ofMap(distance_lenght, 0, radius * 2, radius, 0));
			}
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(2);

ofSetCircleResolution(36);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->locations.clear();

this->colors.clear();

ofColor color;

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

glm::vec2 location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, 0, ofGetHeight()));

this->locations.push_back(location);

color.setHsb(ofRandom(255), 255, 230);

this->colors.push_back(color);

}

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

void ofApp::draw() {

float radius = 30;

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

ofFill();

ofSetColor(239);

ofDrawCircle(this->locations[i], radius);

ofNoFill();

ofSetColor(this->colors[i]);

ofDrawCircle(this->locations[i], radius);

vector<glm::vec2> near_locations;

for (int j = 0; j < this->locations.size(); j++) {

if (i == j) { continue; }

glm::vec2 distance = this->locations[i] - this->locations[j];

float distance_lenght = glm::length(distance);

if (distance_lenght < radius * 2) {

ofSetColor(this->colors[j]);

ofDrawCircle(this->locations[i], ofMap(distance_lenght, 0, radius * 2, radius, 0));

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190124

月	火	水	木	金	土	日
				1	2	3
4	5	6	7	8	9	10
11	12	13	14	15	16	17
18	19	20	21	22	23	24
25	26	27	28	29	30	31