カラフルな円を沢山描く openFrameworks – プログラミング de 落描き

[ Video ]

[ About ]
円を沢山描写しています。円の座標や大きさは、ランダムの値＋Noise関数による揺らぎをもってい、ふわふわと揺れ動いています。また、円の色は0座標(左上)からの距離によって決まり、変化するようになっているので色が連続的に変化しています。

[ 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) {};
};

#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(39);
	ofSetWindowTitle("Insta");

	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
}

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

	ofSeedRandom(39);
}

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

	int min_size = 3;
	int max_size = 35;
	int number_of_circle = 512 + 128;
	for (int i = 0; i < number_of_circle; i++) {

		float size = ofRandom(min_size, max_size) + ofMap(ofNoise(ofRandom(512) * 0.005, ofGetFrameNum() * 0.001), 0, 1, -max_size, max_size);
		float x = ofRandom(0, ofGetWidth());
		float y = ofRandom(0, ofGetHeight());
		x += ofMap(ofNoise(ofRandom(number_of_circle) * 0.005, ofGetFrameNum() * 0.005), 0, 1, -size, size);
		y += ofMap(ofNoise(ofRandom(number_of_circle) * 0.005, ofGetFrameNum() * 0.005), 0, 1, -size, size);

		ofColor circle_color;
		circle_color.setHsb(((int)ofPoint(x, y).length() - ofGetFrameNum()) % 255, 255, 255);
		ofSetColor(circle_color, ofMap(size, min_size, max_size, 255, 25));

		ofDrawCircle(x, y, size);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(39);

ofSetWindowTitle("Insta");

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

int min_size = 3;

int max_size = 35;

int number_of_circle = 512 + 128;

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

float size = ofRandom(min_size, max_size) + ofMap(ofNoise(ofRandom(512) * 0.005, ofGetFrameNum() * 0.001), 0, 1, -max_size, max_size);

float x = ofRandom(0, ofGetWidth());

float y = ofRandom(0, ofGetHeight());

x += ofMap(ofNoise(ofRandom(number_of_circle) * 0.005, ofGetFrameNum() * 0.005), 0, 1, -size, size);

y += ofMap(ofNoise(ofRandom(number_of_circle) * 0.005, ofGetFrameNum() * 0.005), 0, 1, -size, size);

ofColor circle_color;

circle_color.setHsb(((int)ofPoint(x, y).length() - ofGetFrameNum()) % 255, 255, 255);

ofSetColor(circle_color, ofMap(size, min_size, max_size, 255, 25));

ofDrawCircle(x, y, size);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180419

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