Afterimage of Noise. openFrameworks – プログラミング de 落描き

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Afterimage of Noise.

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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(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
	ofEnableDepthTest();
}

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

}

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

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

	int base_radius = 330;
	for (int radius = base_radius; radius > 0; radius -= 5) {

		vector<glm::vec2> vertices;
		for (int deg = 0; deg < 360; deg += 1) {

			glm::vec2 noise_location = glm::vec2(cos(deg * DEG_TO_RAD), sin(deg * DEG_TO_RAD));
			float noise_value = ofMap(ofNoise(noise_location.x, noise_location.y, radius * 0.005 + ofGetFrameNum() * 0.005), 0, 1, 0.5, 1);
			float noise_radius = radius * noise_value;

			vertices.push_back(glm::vec2(noise_radius * cos(deg * DEG_TO_RAD), noise_radius * sin(deg * DEG_TO_RAD)));
		}

		ofNoFill();
		ofSetColor(255, 0, 0, ofMap(radius , base_radius, 0, 255, 0));
		ofBeginShape();
		ofVertices(vertices);
		ofEndShape(true);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

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

int base_radius = 330;

for (int radius = base_radius; radius > 0; radius -= 5) {

vector<glm::vec2> vertices;

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

glm::vec2 noise_location = glm::vec2(cos(deg * DEG_TO_RAD), sin(deg * DEG_TO_RAD));

float noise_value = ofMap(ofNoise(noise_location.x, noise_location.y, radius * 0.005 + ofGetFrameNum() * 0.005), 0, 1, 0.5, 1);

float noise_radius = radius * noise_value;

vertices.push_back(glm::vec2(noise_radius * cos(deg * DEG_TO_RAD), noise_radius * sin(deg * DEG_TO_RAD)));

}

ofNoFill();

ofSetColor(255, 0, 0, ofMap(radius , base_radius, 0, 255, 0));

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190207

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