noise – ページ 393 – プログラミング de 落描き

2018年3月11日2018年3月9日

カラフルわっか openFrameworks

[ Video ]

[ About ]
SNSに投稿を始めたころのヤツをイメージして。以前はParticleクラスとして定義していましたが、今回はRandomとNoiseを使って毎フレーム計算して算出するようにしました。

[ Source ]

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

	//ofBackground(39);
	//ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
}

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

//--------------------------------------------------------------
void ofApp::draw() {
	
	ofSeedRandom(39);
	ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

	float radius = 250;
	for (int i = 0; i < 512; i++) {

		float size = ofRandom(20.f);
		float deg = ofRandom(360.f) + ofGetFrameNum() * ofMap(size, 0, 20, 0.8, 0.15);
		float noise_value = ofMap(ofNoise(i * 0.5, ofGetFrameNum() * 0.005), 0, 1, 0.8, 1.2);
		float x = radius * noise_value * cos(deg * DEG_TO_RAD);
		float y = radius * noise_value * sin(deg * DEG_TO_RAD);
		ofPoint point = ofPoint(x, y);

		ofColor c;
		c.setHsb(i % 256, 239, 239);
		ofSetColor(c, 139);
		ofFill();
		ofDrawCircle(point, size);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

//ofBackground(39);

//ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofSeedRandom(39);

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

float radius = 250;

for (int i = 0; i < 512; i++) {

float size = ofRandom(20.f);

float deg = ofRandom(360.f) + ofGetFrameNum() * ofMap(size, 0, 20, 0.8, 0.15);

float noise_value = ofMap(ofNoise(i * 0.5, ofGetFrameNum() * 0.005), 0, 1, 0.8, 1.2);

float x = radius * noise_value * cos(deg * DEG_TO_RAD);

float y = radius * noise_value * sin(deg * DEG_TO_RAD);

ofPoint point = ofPoint(x, y);

ofColor c;

c.setHsb(i % 256, 239, 239);

ofSetColor(c, 139);

ofFill();

ofDrawCircle(point, size);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180310

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2018年3月9日2018年3月8日

ぐりんぐりん openFrameworks

[ Video ]

[ About ]
円の円周に円を描写しています。それぞれの小さい方の円の場所は、属している大きい円の座標からNoise関数で計算されいるので、座標で近い値を指します。

[ Source ]

#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_circle(ofPoint point, float radius);
};

#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_circle(ofPoint point, float radius);

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofBackground(239);
	ofSetWindowTitle("Insta");

	ofSetColor(39);
	ofNoFill();
}

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

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

	int size = 60;

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

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

			ofPoint point = ofPoint(x, y);
			float radius = (size * 0.5) * 0.8;
			ofNoFill();
			this->draw_circle(point, radius);

			float mini_radius = radius * 0.25;
			float mini_deg = ofNoise(x * 0.001, y * 0.001 - ofGetFrameNum() * 0.01) * 720;
			ofPoint mini_point = point + ofPoint(radius * cos(mini_deg * DEG_TO_RAD), radius * sin(mini_deg * DEG_TO_RAD));
			ofFill();
			this->draw_circle(mini_point, mini_radius);

		}
	}
}

//--------------------------------------------------------------
void ofApp::draw_circle(ofPoint point, float radius) {

	ofPushMatrix();
	ofTranslate(point);

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

		ofVertex(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
	}
	ofEndShape();

	ofPopMatrix();
}


//--------------------------------------------------------------
int main() {
	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofSetColor(39);

ofNoFill();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

int size = 60;

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

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

ofPoint point = ofPoint(x, y);

float radius = (size * 0.5) * 0.8;

ofNoFill();

this->draw_circle(point, radius);

float mini_radius = radius * 0.25;

float mini_deg = ofNoise(x * 0.001, y * 0.001 - ofGetFrameNum() * 0.01) * 720;

ofPoint mini_point = point + ofPoint(radius * cos(mini_deg * DEG_TO_RAD), radius * sin(mini_deg * DEG_TO_RAD));

ofFill();

this->draw_circle(mini_point, mini_radius);

}

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

void ofApp::draw_circle(ofPoint point, float radius) {

ofPushMatrix();

ofTranslate(point);

ofBeginShape();

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

ofVertex(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

}

ofEndShape();

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180308

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2018年3月6日2018年3月5日

ねじれC openFrameworks

[ Video ]

[ About ]
半円をたくさん書いて、その角度が中心の円に追随するようにしてみました。角度の計算の仕方はいつも通り、Noise関数にフレーム数を含ませてステップしています。

[ Source ]

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

	ofNoFill();
	ofSetLineWidth(5);
	ofSetColor(39);
}

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

}

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

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

	float radius = 30;
	for (int i = 0; i < 50; i++) {

		float noise_value = ofNoise(i * 0.05 - ofGetFrameNum() * 0.005);
		radius += 10;

		ofPushMatrix();
		ofRotate(noise_value * 720);

		ofBeginShape();
		for (int deg = 0; deg <= 180; deg += 1) {

			float x = radius * cos(deg * DEG_TO_RAD);
			float y = radius * sin(deg * DEG_TO_RAD);

			ofVertex(x, y);
		}
		ofEndShape();

		ofPopMatrix();
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofNoFill();

ofSetLineWidth(5);

ofSetColor(39);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

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

float radius = 30;

for (int i = 0; i < 50; i++) {

float noise_value = ofNoise(i * 0.05 - ofGetFrameNum() * 0.005);

radius += 10;

ofPushMatrix();

ofRotate(noise_value * 720);

ofBeginShape();

for (int deg = 0; deg <= 180; deg += 1) {

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

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

ofVertex(x, y);

}

ofEndShape();

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180305

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