プログラミング de 落描き – ページ 703 – クリエイティブ・コーディングによる生成物とソース

2019年2月14日2019年2月14日

Valentine’s Day 2019. openFrameworks

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[ About ]
DanielShiffman先生(@shiffman)のハート座標ツイートを参考に。Happy Valentine’s Day!

Happy Valentine’s Day!

🧮 + @p5xjs = ♥️
x = 16sin³(θ)
y = 13cos(θ) – 5cos(2θ) – 2cos(3θ) – cos(4θ)
(source: https://t.co/Uc0JAXW65R)
💻 https://t.co/nhnH84UOCG #GIFTrain pic.twitter.com/Nitj2PEFkX

— Daniel Shiffman (@shiffman) 2019年2月13日

[ 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::vec2 make_point(float theta);
};

#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::vec2 make_point(float theta);

};

#include "ofApp.h"

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

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

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

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

	ofSeedRandom(39);
}

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

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

	for (auto scale = 1; scale < 20; scale += 1) {

		vector<glm::vec2> vertices;
		auto param = (ofGetFrameNum() * 2 + scale * 20) % 720;
		for (auto deg = 0; deg < 360; deg += 1) {

			if (param < 360) {

				if (deg < param) { vertices.push_back(this->make_point(deg * DEG_TO_RAD) * scale); }
			}
			else {

				if (deg > param - 360) { vertices.push_back(this->make_point(deg * DEG_TO_RAD) * scale); }
			}

			if (deg == param % 360) {

				ofFill();
				ofDrawCircle(this->make_point(deg * DEG_TO_RAD) * scale, 3);
			}
		}

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

//--------------------------------------------------------------
//Reference by https://twitter.com/shiffman/status/1095764239665512453
glm::vec2 ofApp::make_point(float theta) {

	float x = 16 * (pow(sin(theta), 3));
	float y = 13 * cos(theta) - 5 * cos(2 * theta) - 2 * cos(3 * theta) - cos(4 * theta);
	return glm::vec2(x, -y);
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(2);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

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

for (auto scale = 1; scale < 20; scale += 1) {

vector<glm::vec2> vertices;

auto param = (ofGetFrameNum() * 2 + scale * 20) % 720;

for (auto deg = 0; deg < 360; deg += 1) {

if (param < 360) {

if (deg < param) { vertices.push_back(this->make_point(deg * DEG_TO_RAD) * scale); }

}

else {

if (deg > param - 360) { vertices.push_back(this->make_point(deg * DEG_TO_RAD) * scale); }

}

if (deg == param % 360) {

ofFill();

ofDrawCircle(this->make_point(deg * DEG_TO_RAD) * scale, 3);

}

ofNoFill();

ofBeginShape();

ofVertices(vertices);

ofEndShape();

}

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

//Reference by https://twitter.com/shiffman/status/1095764239665512453

glm::vec2 ofApp::make_point(float theta) {

float x = 16 * (pow(sin(theta), 3));

float y = 13 * cos(theta) - 5 * cos(2 * theta) - 2 * cos(3 * theta) - cos(4 * theta);

return glm::vec2(x, -y);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190214

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2019年2月13日

Rotate color ring. openFrameworks

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[ About ]
回る色輪

Rotate color ring.

[ 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) {}
};

#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) {}

};

#include "ofApp.h"

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

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

	ofBackground(39);
}

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

}

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

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

	auto radius_span = 50;
	auto deg_span = 5;	
	for (auto radius = 50; radius < 350; radius += radius_span) {

		ofRotate(ofGetFrameNum());

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

			ofColor color;
			color.setHsb(ofMap(deg, 0, 360, 0, 255), 255, 255);
			ofSetColor(color);

			ofBeginShape();
			ofVertex(glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));
			ofVertex(glm::vec2(radius * cos((deg + deg_span) * DEG_TO_RAD), radius * sin((deg + deg_span) * DEG_TO_RAD)));
			ofVertex(glm::vec2((radius + radius_span) * cos((deg + deg_span) * DEG_TO_RAD), (radius + radius_span) * sin((deg + deg_span) * DEG_TO_RAD)));
			ofVertex(glm::vec2((radius + radius_span) * cos((deg)* DEG_TO_RAD), (radius + radius_span) * sin((deg)* DEG_TO_RAD)));
			ofEndShape();
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(39);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

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

auto radius_span = 50;

auto deg_span = 5;

for (auto radius = 50; radius < 350; radius += radius_span) {

ofRotate(ofGetFrameNum());

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

ofColor color;

color.setHsb(ofMap(deg, 0, 360, 0, 255), 255, 255);

ofSetColor(color);

ofBeginShape();

ofVertex(glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));

ofVertex(glm::vec2(radius * cos((deg + deg_span) * DEG_TO_RAD), radius * sin((deg + deg_span) * DEG_TO_RAD)));

ofVertex(glm::vec2((radius + radius_span) * cos((deg + deg_span) * DEG_TO_RAD), (radius + radius_span) * sin((deg + deg_span) * DEG_TO_RAD)));

ofVertex(glm::vec2((radius + radius_span) * cos((deg)* DEG_TO_RAD), (radius + radius_span) * sin((deg)* DEG_TO_RAD)));

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190213

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2019年2月12日2019年2月12日

Peephole. openFrameworks

[ Video ]

[ About ]
覗き穴

Peephole.

[ 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);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	auto rect_len = 30;
	auto center = glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.5);
	auto radius_base = 300.f;
	
	for (int z = 0; z > -500; z -= 50) {

		for (auto x = 0; x < ofGetWidth(); x += rect_len) {

			for (auto y = 0; y < ofGetHeight(); y += rect_len) {

				auto rad = std::atan2(center.y - y, center.x - x);
				auto point = glm::vec2(radius_base * cos(rad), radius_base * sin(rad));
				auto radius = radius_base * ofMap(ofNoise(point.x * 0.0008, point.y * 0.0008, z * 0.005, ofGetFrameNum() * 0.01), 0, 1, 0.5, 1.0);
				point = glm::vec2(radius * cos(rad), radius * sin(rad));

				if (glm::distance(glm::vec2(x, y), center) > glm::length(point)) {

					ofNoFill();
					ofSetColor(239);
					ofDrawRectangle(glm::vec3(x, y, z), rect_len, rect_len);

					ofFill();
					ofSetColor(ofMap(z, -500, 0, 239, 0));
					ofDrawRectangle(glm::vec3(x, y, z), rect_len - 0.5, rect_len - 0.5);
				}
			}
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

auto rect_len = 30;

auto center = glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

auto radius_base = 300.f;

for (int z = 0; z > -500; z -= 50) {

for (auto x = 0; x < ofGetWidth(); x += rect_len) {

for (auto y = 0; y < ofGetHeight(); y += rect_len) {

auto rad = std::atan2(center.y - y, center.x - x);

auto point = glm::vec2(radius_base * cos(rad), radius_base * sin(rad));

auto radius = radius_base * ofMap(ofNoise(point.x * 0.0008, point.y * 0.0008, z * 0.005, ofGetFrameNum() * 0.01), 0, 1, 0.5, 1.0);

point = glm::vec2(radius * cos(rad), radius * sin(rad));

if (glm::distance(glm::vec2(x, y), center) > glm::length(point)) {

ofNoFill();

ofSetColor(239);

ofDrawRectangle(glm::vec3(x, y, z), rect_len, rect_len);

ofFill();

ofSetColor(ofMap(z, -500, 0, 239, 0));

ofDrawRectangle(glm::vec3(x, y, z), rect_len - 0.5, rect_len - 0.5);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190212

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