数学から創るジェネラティブアート – ページ 3

[ 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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[ Video ]

[ About ]
「数学から創るジェネラティブアート」のサンプルDivRectを引用。時間経過でパラメータが変化

Divide rectangle.

[ Source ]
※ ランダムでの色付け処理がゴチャっとしてたので除いてあります。必要な方おりましたら連絡下さい。

#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) {};

	void draw_div_rect(glm::vec2 draw_location, int a, int b);
};

#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) {};

void draw_div_rect(glm::vec2 draw_location, int a, int b);

};

#include "ofApp.h"	

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

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

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(3);
	ofNoFill();
}

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

	ofSeedRandom(39);
}

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

	int span = 180;
	for (int x = span * 0.5; x < ofGetWidth(); x += span) {

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

			int a = ofMap(ofNoise(ofRandom(100), ofGetFrameNum() * 0.005), 0, 1, 2, 12);
			int b = ofMap(ofNoise(ofRandom(100), ofGetFrameNum() * 0.005), 0, 1, 2, 12);
			this->draw_div_rect(glm::vec2(x, y), a, b);
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw_div_rect(glm::vec2 draw_location, int a, int b) {

	// 数学から創るジェネラティブアート P.51

	auto scale = 13;
	auto width = a * scale;
	auto height = b * scale;
	auto length = height;
	auto location = glm::vec2();
	auto count = 0;

	ofPushMatrix();
	ofTranslate(draw_location.x - width * 0.5, draw_location.y - height * 0.5);

	while (length > 0) {

		if (count++ % 2 == 0) {

			while (location.x + length <= width) {

				ofDrawRectangle(location, length, length);
				location.x += length;
			}
			length = width - location.x;
		}
		else {

			while (location.y + length <= height) {

				ofDrawRectangle(location, length, length);
				location.y += length;
			}
			length = height - location.y;
		}
	}

	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);

ofSetLineWidth(3);

ofNoFill();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

int span = 180;

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

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

int a = ofMap(ofNoise(ofRandom(100), ofGetFrameNum() * 0.005), 0, 1, 2, 12);

int b = ofMap(ofNoise(ofRandom(100), ofGetFrameNum() * 0.005), 0, 1, 2, 12);

this->draw_div_rect(glm::vec2(x, y), a, b);

}

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

void ofApp::draw_div_rect(glm::vec2 draw_location, int a, int b) {

// 数学から創るジェネラティブアート P.51

auto scale = 13;

auto width = a * scale;

auto height = b * scale;

auto length = height;

auto location = glm::vec2();

auto count = 0;

ofPushMatrix();

ofTranslate(draw_location.x - width * 0.5, draw_location.y - height * 0.5);

while (length > 0) {

if (count++ % 2 == 0) {

while (location.x + length <= width) {

ofDrawRectangle(location, length, length);

location.x += length;

}

length = width - location.x;

}

else {

while (location.y + length <= height) {

ofDrawRectangle(location, length, length);

location.y += length;

}

length = height - location.y;

}

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190426

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タグ: 数学から創るジェネラティブアート

Octagon spiral. openFrameworks

Divide rectangle. openFrameworks