noise – ページ 386 – プログラミング de 落描き

2018年4月13日2018年4月12日

ノイズのスケールを可視化 openFrameworks

[ Video ]

[ About ]
Noise関数の引数として、頻繁にx, y座標を与えたるする事が多いのですが、その間隔を変化させたらどうなるだろう？と思いついた結果です。

四角を描写、色をNoise関数の結果で表しています。中央付近は小さい四角なのでx, y座標の値が近く模様っぽいものが現れますが、中央から離れるにしたがって四角が大きくなるので、x, y座標の値も離れます。

[ 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);
	ofBackground(239);
	ofSetWindowTitle("Insta");

	ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);
}

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

	ofSeedRandom(39);
}

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

	ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

	float size = 1;
	float noise_value;
	ofColor rect_color;
	for (int y = size / 2; y < ofGetHeight() / 2 + size;) {

		for (int x = size / 2; x < ofGetWidth() / 2 + size / 2; x += size) {

			noise_value = ofNoise(x * 0.005, y * 0.005 - ofGetFrameNum() * 0.005);
			ofSetColor(noise_value * 255);

			ofDrawRectangle(ofPoint(x, y), size, size);
			ofDrawRectangle(ofPoint(x, -y), size, size);
			ofDrawRectangle(ofPoint(-x, y), size, size);
			ofDrawRectangle(ofPoint(-x, -y), size, size);
		}

		y += size * 1.25;
		size *= 1.5;
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

float size = 1;

float noise_value;

ofColor rect_color;

for (int y = size / 2; y < ofGetHeight() / 2 + size;) {

for (int x = size / 2; x < ofGetWidth() / 2 + size / 2; x += size) {

noise_value = ofNoise(x * 0.005, y * 0.005 - ofGetFrameNum() * 0.005);

ofSetColor(noise_value * 255);

ofDrawRectangle(ofPoint(x, y), size, size);

ofDrawRectangle(ofPoint(x, -y), size, size);

ofDrawRectangle(ofPoint(-x, y), size, size);

ofDrawRectangle(ofPoint(-x, -y), size, size);

}

y += size * 1.25;

size *= 1.5;

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180412

2018年4月11日2018年4月10日

黒白ドット openFrameworks

[ Video ]

[ About ]
画面の左端と右端を結ぶ線を作り、線より上部には白い丸だけ、下部には黒い丸だけを描写しています。結ばれた線上にかかっている円は切れて見えるようになっているので実際には描写していないのですが、線が見えてくる気がします。

[ 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);
	ofBackground(139);
	ofSetWindowTitle("Insta");
}

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

}

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

	ofPoint start = ofPoint(0, ofNoise(11, ofGetFrameNum() * 0.01) * ofGetHeight());
	ofPoint end = ofPoint(ofGetWidth(), ofNoise(3, ofGetFrameNum() * 0.01) * ofGetHeight());
	ofPoint distance = end - start;

	float radius = 72;
	bool flag = true;
	for (int circle_x = radius; circle_x < ofGetWidth() + radius; circle_x += radius * 2) {

		for (int circle_y = radius; circle_y < ofGetHeight() + radius; circle_y += radius * 2) {

			flag ? ofSetColor(39) : ofSetColor(239);

			ofBeginShape();
			for (int deg = 0; deg < 360; deg++) {

				float x = radius * cos(deg * DEG_TO_RAD) + circle_x;
				float y = radius * sin(deg * DEG_TO_RAD) + circle_y;
				ofPoint point = start + (distance / ofGetWidth()) * x;
				if (y > point.y) {

					flag ? ofVertex(x, y) : ofVertex(point);
				}
				else {

					flag ? ofVertex(point) : ofVertex(x, y);
				}
			}
			ofEndShape(true);

			flag = !flag;
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(139);

ofSetWindowTitle("Insta");

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofPoint start = ofPoint(0, ofNoise(11, ofGetFrameNum() * 0.01) * ofGetHeight());

ofPoint end = ofPoint(ofGetWidth(), ofNoise(3, ofGetFrameNum() * 0.01) * ofGetHeight());

ofPoint distance = end - start;

float radius = 72;

bool flag = true;

for (int circle_x = radius; circle_x < ofGetWidth() + radius; circle_x += radius * 2) {

for (int circle_y = radius; circle_y < ofGetHeight() + radius; circle_y += radius * 2) {

flag ? ofSetColor(39) : ofSetColor(239);

ofBeginShape();

for (int deg = 0; deg < 360; deg++) {

float x = radius * cos(deg * DEG_TO_RAD) + circle_x;

float y = radius * sin(deg * DEG_TO_RAD) + circle_y;

ofPoint point = start + (distance / ofGetWidth()) * x;

if (y > point.y) {

flag ? ofVertex(x, y) : ofVertex(point);

}

else {

flag ? ofVertex(point) : ofVertex(x, y);

}

ofEndShape(true);

flag = !flag;

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180410

2018年4月10日2018年4月9日

ねじれにねじれ openFrameworks

[ Video ]

[ About ]
Z軸に等間隔で、ある半径の円周上に5度間隔で取得した座標を取得。それぞれの点でSphereを描写・下層の点と線を結んでいます。

5度間隔の開始位置となる角度はNoise関数とフレーム数でズラしていっているので、前後の円周でズレが大きくなったり、小さくなったりしています。

[ 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) {};

	// Make Member
	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) {};

// Make Member

ofEasyCam cam;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofBackground(39);
	ofSetWindowTitle("Insta");

	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	int radius = 300;
	int z_span = 150;
	int deg_span = 5;

	vector<vector<ofPoint>> points_list;

	this->cam.begin();
	ofRotateX(-90);

	for (int z = -300; z <= 300; z += z_span) {

		vector<ofPoint> points;
		int deg_start = ofNoise(z * 0.1, ofGetFrameNum() * 0.005) * 720;
		for (int deg = deg_start; deg < deg_start + 360; deg += deg_span) {

			points.push_back(ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z));
		}
		points_list.push_back(points);
	}

	
	for (int list_index = 1; list_index < points_list.size(); list_index++) {

		for (int i = 0; i < points_list[list_index].size(); i++) {

			ofSetColor(239);
			ofDrawSphere(points_list[list_index][i], 2);

			if (list_index == 1) {

				ofDrawSphere(points_list[0][i], 2);
			}

			ofSetColor(239, ofMap(points_list[list_index][i].distance(points_list[list_index - 1][i]), 0, radius, 0, 255));
			ofDrawLine(points_list[list_index][i], points_list[list_index - 1][i]);
		}
	}

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(39);

ofSetWindowTitle("Insta");

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

int radius = 300;

int z_span = 150;

int deg_span = 5;

vector<vector<ofPoint>> points_list;

this->cam.begin();

ofRotateX(-90);

for (int z = -300; z <= 300; z += z_span) {

vector<ofPoint> points;

int deg_start = ofNoise(z * 0.1, ofGetFrameNum() * 0.005) * 720;

for (int deg = deg_start; deg < deg_start + 360; deg += deg_span) {

points.push_back(ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z));

}

points_list.push_back(points);

}

for (int list_index = 1; list_index < points_list.size(); list_index++) {

for (int i = 0; i < points_list[list_index].size(); i++) {

ofSetColor(239);

ofDrawSphere(points_list[list_index][i], 2);

if (list_index == 1) {

ofDrawSphere(points_list[0][i], 2);

}

ofSetColor(239, ofMap(points_list[list_index][i].distance(points_list[list_index - 1][i]), 0, radius, 0, 255));

ofDrawLine(points_list[list_index][i], points_list[list_index - 1][i]);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180409

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