Triangle vortex. openFrameworks – プログラミング de 落描き

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Triangle vortex.

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#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(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetColor(39);
}
//--------------------------------------------------------------
void ofApp::update() {

}

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

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

	int deg = 0;
	int deg_span = 10;
	for (int radius = 0; radius <= 430; radius += 2) {

		float circumference = 2 * PI * radius;
		float small_radius = circumference / 360 * deg_span * 0.5;

		ofPushMatrix();
		ofPoint point = ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
		ofTranslate(point);

		ofNoFill();
		ofDrawCircle(ofPoint(), small_radius);

		int start_deg = ofMap(ofNoise(radius * 0.05 + ofGetFrameNum() * 0.05), 0, 1, 0, 720);
		ofFill();
		ofBeginShape();
		for (int small_deg = start_deg; small_deg < start_deg + 360; small_deg += 120) {
		
			ofVertex(small_radius * cos(small_deg * DEG_TO_RAD), small_radius * sin(small_deg * DEG_TO_RAD));
		}
		ofEndShape(true);

		ofPopMatrix();
		
		deg += deg_span;
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

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

int deg = 0;

int deg_span = 10;

for (int radius = 0; radius <= 430; radius += 2) {

float circumference = 2 * PI * radius;

float small_radius = circumference / 360 * deg_span * 0.5;

ofPushMatrix();

ofPoint point = ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

ofTranslate(point);

ofNoFill();

ofDrawCircle(ofPoint(), small_radius);

int start_deg = ofMap(ofNoise(radius * 0.05 + ofGetFrameNum() * 0.05), 0, 1, 0, 720);

ofFill();

ofBeginShape();

for (int small_deg = start_deg; small_deg < start_deg + 360; small_deg += 120) {

ofVertex(small_radius * cos(small_deg * DEG_TO_RAD), small_radius * sin(small_deg * DEG_TO_RAD));

}

ofEndShape(true);

ofPopMatrix();

deg += deg_span;

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20181007

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