programming – ページ 365 – プログラミング de 落描き

2020年8月11日2020年8月11日

Text by reflective lines. Draw by openFrameworks

[ Video ]

[ About ]
反射する線による文字。

Text by reflective lines.

[ 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) {};

	int number_of_agent;
	int len_of_tail;
	float speed_param;
	vector<deque<glm::vec2>> logs;
	vector<glm::vec2> directions;
	vector<ofColor> colors;

	ofFbo fbo;
	ofPixels pixels;
};

#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) {};

int number_of_agent;

int len_of_tail;

float speed_param;

vector<deque<glm::vec2>> logs;

vector<glm::vec2> directions;

vector<ofColor> colors;

ofFbo fbo;

ofPixels pixels;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(2);

	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_MULTIPLY);

	ofColor color;
	vector<ofColor> color_base_list;
	vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };
	for (auto hex : hex_list) {

		color.setHex(hex);
		color_base_list.push_back(color);
	}

	this->fbo.allocate(ofGetWidth(), ofGetHeight());
	this->fbo.begin();
	ofClear(0);

	ofTrueTypeFont font;
	font.loadFont("fonts/Kazesawa-bold.ttf", 320, true, true, true);
	string word = "AB";
	font.drawString(word, ofGetWidth() * 0.5 - font.stringWidth(word) * 0.5, ofGetHeight() * 0.5 - font.stringHeight(word) * 0.05);
	word = "CD";
	font.drawString(word, ofGetWidth() * 0.5 - font.stringWidth(word) * 0.5, ofGetHeight() * 0.5 + font.stringHeight(word) * 1.05);

	this->fbo.end();
	this->fbo.readToPixels(this->pixels);

	this->number_of_agent = 350;
	this->len_of_tail = 30;
	while (this->logs.size() < this->number_of_agent) {

		int x = ofRandom(ofGetWidth());
		int y = ofRandom(ofGetHeight());
		if (this->pixels.getColor(x, y) != ofColor(0, 0)) {

			deque<glm::vec2> log;
			log.push_front(glm::vec2(x, y));
			this->logs.push_back(log);
			this->directions.push_back(glm::normalize(glm::vec2(ofRandom(-1, 1), ofRandom(-1, 1))));
			this->colors.push_back(color_base_list[(int)ofRandom(color_base_list.size())]);
		}
	}
}

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

	if (ofGetFrameNum() % 60 == 0) {

		while (true) {
		
			float tmp = ofRandom(1);
			if (abs(this->speed_param - tmp) > 0.25) {

				this->speed_param = tmp;
				break;
			}

		}
	}

	for (int i = 0; i < this->number_of_agent; i++) {

		glm::vec2 future = this->logs[i].front() + this->directions[i] * 5 * this->speed_param;
		int x = future.x;
		int y = future.y;

		while (this->pixels.getColor(x, y) == ofColor(0, 0)) {

			this->directions[i] = glm::normalize(glm::vec2(ofRandom(-1, 1), ofRandom(-1, 1)));

			future = this->logs[i].front() + this->directions[i] * 10 * this->speed_param;
			x = future.x;
			y = future.y;
		}

		this->logs[i].push_front(future);
		while (this->logs[i].size() > this->len_of_tail) {

			this->logs[i].pop_back();
		}
	}
}

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

	for (int i = 0; i < this->number_of_agent; i++) {

		ofSetColor(this->colors[i]);
		for (int l = 0; l < this->logs[i].size() - 1; l++) {

			ofDrawLine(this->logs[i][l], this->logs[i][l + 1]);
		}
	}
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(2);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_MULTIPLY);

ofColor color;

vector<ofColor> color_base_list;

vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };

for (auto hex : hex_list) {

color.setHex(hex);

color_base_list.push_back(color);

}

this->fbo.allocate(ofGetWidth(), ofGetHeight());

this->fbo.begin();

ofClear(0);

ofTrueTypeFont font;

font.loadFont("fonts/Kazesawa-bold.ttf", 320, true, true, true);

string word = "AB";

font.drawString(word, ofGetWidth() * 0.5 - font.stringWidth(word) * 0.5, ofGetHeight() * 0.5 - font.stringHeight(word) * 0.05);

word = "CD";

font.drawString(word, ofGetWidth() * 0.5 - font.stringWidth(word) * 0.5, ofGetHeight() * 0.5 + font.stringHeight(word) * 1.05);

this->fbo.end();

this->fbo.readToPixels(this->pixels);

this->number_of_agent = 350;

this->len_of_tail = 30;

while (this->logs.size() < this->number_of_agent) {

int x = ofRandom(ofGetWidth());

int y = ofRandom(ofGetHeight());

if (this->pixels.getColor(x, y) != ofColor(0, 0)) {

deque<glm::vec2> log;

log.push_front(glm::vec2(x, y));

this->logs.push_back(log);

this->directions.push_back(glm::normalize(glm::vec2(ofRandom(-1, 1), ofRandom(-1, 1))));

this->colors.push_back(color_base_list[(int)ofRandom(color_base_list.size())]);

}

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

void ofApp::update() {

if (ofGetFrameNum() % 60 == 0) {

while (true) {

float tmp = ofRandom(1);

if (abs(this->speed_param - tmp) > 0.25) {

this->speed_param = tmp;

break;

}

for (int i = 0; i < this->number_of_agent; i++) {

glm::vec2 future = this->logs[i].front() + this->directions[i] * 5 * this->speed_param;

int x = future.x;

int y = future.y;

while (this->pixels.getColor(x, y) == ofColor(0, 0)) {

this->directions[i] = glm::normalize(glm::vec2(ofRandom(-1, 1), ofRandom(-1, 1)));

future = this->logs[i].front() + this->directions[i] * 10 * this->speed_param;

x = future.x;

y = future.y;

}

this->logs[i].push_front(future);

while (this->logs[i].size() > this->len_of_tail) {

this->logs[i].pop_back();

}

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

void ofApp::draw() {

for (int i = 0; i < this->number_of_agent; i++) {

ofSetColor(this->colors[i]);

for (int l = 0; l < this->logs[i].size() - 1; l++) {

ofDrawLine(this->logs[i][l], this->logs[i][l + 1]);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200811

2020年8月10日2020年8月10日

Numbered band. Draw by openFrameworks

[ Video ]

[ About ]
数字の帯。

Numbered band.

[ 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 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) {};

	ofEasyCam cam;
	vector<ofPath> path_list;
};

#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) {};

ofEasyCam cam;

vector<ofPath> path_list;

};

#include "ofApp.h"	

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	//ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);
	ofEnableDepthTest();

	ofTrueTypeFont font;
	font.loadFont("fonts/Kazesawa-Bold.ttf", 28, true, true, true);

	string word = "01234567890123456789";
	for (int i = 0; i < (int)word.size(); i++) {

		this->path_list.push_back(font.getCharacterAsPoints(word[i], true, false));
	}
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum());

	int y = 0;
	auto noise_param = glm::vec2(ofRandom(1000), ofRandom(1000));
	for (auto radius = 150; radius < 250; radius += 5) {

		ofPushMatrix();

		ofRotateX(ofMap(ofNoise(noise_param.x + radius * 0.0025, ofGetFrameNum() * 0.001), 0, 1, -360, 360));
		ofRotateZ(ofMap(ofNoise(noise_param.y + radius * 0.0025, ofGetFrameNum() * 0.001), 0, 1, -360, 360));
		for (int deg = 0; deg < 360; deg += 5) {

			auto location = glm::vec3(0, y, -radius);
			auto rotation_y = glm::rotate(glm::mat4(), (float)(deg * DEG_TO_RAD), glm::vec3(0, 1, 0));
			location = glm::vec4(location, 0) * rotation_y;

			ofPushMatrix();
			ofTranslate(location);
			ofRotateY(180 - deg);
			ofRotateX(180);

			int noise_index = ofMap(ofNoise(location.x * 0.008, location.y * 0.008, location.z * 0.008, ofGetFrameNum() * 0.03), 0, 1, 0, path_list.size());
			int tmp_size = (2 * radius * PI) / 48;
			auto outline = path_list[noise_index].getOutline();

			ofSetColor(39);
			ofFill();
			ofBeginShape();
			for (int line_index = 0; line_index < outline.size(); line_index++) {

				if (line_index != 0) { ofNextContour(true); }

				auto vertices = outline[line_index].getVertices();
				for (int i = 0; i < vertices.size(); i++) {

					ofVertex((vertices[i] / 28 * tmp_size) + glm::vec2(tmp_size * -0.5, tmp_size * 0.5));
				}
			}
			ofEndShape(true);

			ofSetColor(239);
			ofNoFill();
			ofBeginShape();
			for (int line_index = 0; line_index < outline.size(); line_index++) {

				if (line_index != 0) { ofNextContour(true); }

				auto vertices = outline[line_index].getVertices();
				for (int i = 0; i < vertices.size(); i++) {

					ofVertex((vertices[i] / 28 * tmp_size) + glm::vec2(tmp_size * -0.5, tmp_size * 0.5));
				}
			}
			ofEndShape(true);

			ofPopMatrix();
		}

		ofPopMatrix();
	}

	this->cam.end();
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

//ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

ofEnableDepthTest();

ofTrueTypeFont font;

font.loadFont("fonts/Kazesawa-Bold.ttf", 28, true, true, true);

string word = "01234567890123456789";

for (int i = 0; i < (int)word.size(); i++) {

this->path_list.push_back(font.getCharacterAsPoints(word[i], true, false));

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum());

int y = 0;

auto noise_param = glm::vec2(ofRandom(1000), ofRandom(1000));

for (auto radius = 150; radius < 250; radius += 5) {

ofPushMatrix();

ofRotateX(ofMap(ofNoise(noise_param.x + radius * 0.0025, ofGetFrameNum() * 0.001), 0, 1, -360, 360));

ofRotateZ(ofMap(ofNoise(noise_param.y + radius * 0.0025, ofGetFrameNum() * 0.001), 0, 1, -360, 360));

for (int deg = 0; deg < 360; deg += 5) {

auto location = glm::vec3(0, y, -radius);

auto rotation_y = glm::rotate(glm::mat4(), (float)(deg * DEG_TO_RAD), glm::vec3(0, 1, 0));

location = glm::vec4(location, 0) * rotation_y;

ofPushMatrix();

ofTranslate(location);

ofRotateY(180 - deg);

ofRotateX(180);

int noise_index = ofMap(ofNoise(location.x * 0.008, location.y * 0.008, location.z * 0.008, ofGetFrameNum() * 0.03), 0, 1, 0, path_list.size());

int tmp_size = (2 * radius * PI) / 48;

auto outline = path_list[noise_index].getOutline();

ofSetColor(39);

ofFill();

ofBeginShape();

for (int line_index = 0; line_index < outline.size(); line_index++) {

if (line_index != 0) { ofNextContour(true); }

auto vertices = outline[line_index].getVertices();

for (int i = 0; i < vertices.size(); i++) {

ofVertex((vertices[i] / 28 * tmp_size) + glm::vec2(tmp_size * -0.5, tmp_size * 0.5));

}

ofEndShape(true);

ofSetColor(239);

ofNoFill();

ofBeginShape();

for (int line_index = 0; line_index < outline.size(); line_index++) {

if (line_index != 0) { ofNextContour(true); }

auto vertices = outline[line_index].getVertices();

for (int i = 0; i < vertices.size(); i++) {

ofVertex((vertices[i] / 28 * tmp_size) + glm::vec2(tmp_size * -0.5, tmp_size * 0.5));

}

ofEndShape(true);

ofPopMatrix();

}

ofPopMatrix();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200810

2020年8月9日

Distorted ripples. Draw by openFrameworks

[ Video ]

[ About ]
歪んださざ波。

Distorted ripples.

[ Source ]

#pragma once
#include "ofMain.h"
#include "opencv2/opencv.hpp"

/* Ripple */

class Ripple
{
public:

	Ripple();
	Ripple(glm::vec3 location);
	void update();
	void draw();
	bool isDead();
private:

	glm::vec3 location;
	float radius;
	float life;
	ofColor color;
};

/* ofApp */

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) {};

	vector<unique_ptr<Ripple>> ripple_list;

	ofFbo fbo;
	ofPixels pixels;
	cv::Mat pixels_mat;
};

#pragma once

#include "ofMain.h"

#include "opencv2/opencv.hpp"

/* Ripple */

class Ripple

{

public:

Ripple();

Ripple(glm::vec3 location);

void update();

void draw();

bool isDead();

private:

glm::vec3 location;

float radius;

float life;

ofColor color;

};

/* ofApp */

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) {};

vector<unique_ptr<Ripple>> ripple_list;

ofFbo fbo;

ofPixels pixels;

cv::Mat pixels_mat;

};

#include "ofApp.h"

/* Ripple */

//--------------------------------------------------------------
Ripple::Ripple() : Ripple(glm::vec3()) { }

//--------------------------------------------------------------
Ripple::Ripple(glm::vec3 location) {

	this->location = location;
	this->radius = 1;
	this->life = 255;
	this->color.setHsb(ofRandom(255), 255, 230);
}

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

	if (this->location.z > 0) {

		this->location.z = this->location.z > 20 ? this->location.z - 20 : 0;
		return;
	}

	this->radius += 2;
	this->life -= 3;
}

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

	ofPushMatrix();
	ofTranslate(this->location);

	ofSetColor(this->color);
	if (this->location.z > 0) {

		ofDrawLine(glm::vec3(), glm::vec3(0, 0, 30));
	}
	else {

		if (this->life < 200) {

			ofSetColor(this->color, ofMap(this->life, 0, 200, 0, 255));
		}

		int deg_span = 60;
		for (int deg = 0; deg < 360; deg += deg_span) {

			int next_deg = deg + deg_span;
			float noise_param = ofMap(ofNoise(glm::vec3(
				this->location.x + cos(deg * DEG_TO_RAD),
				this->location.y + sin(deg * DEG_TO_RAD),
				ofGetFrameNum() * 0.008)),
				0, 1, 0, 2);
			float next_noise_param = ofMap(ofNoise(glm::vec3(
				this->location.x + cos((deg + deg_span) * DEG_TO_RAD),
				this->location.y + sin((deg + deg_span) * DEG_TO_RAD),
				ofGetFrameNum() * 0.008)),
				0, 1, 2, 0);

			vector<glm::vec2> vertices;
			vertices.push_back(glm::vec2(
				radius * cos(deg * DEG_TO_RAD),
				radius * sin(deg * DEG_TO_RAD)));
			vertices.push_back(glm::vec2(
				(radius * noise_param) * cos((deg + deg_span * 0.25) * DEG_TO_RAD),
				(radius * noise_param) * sin((deg + deg_span * 0.25) * DEG_TO_RAD)));
			vertices.push_back(glm::vec2(
				(radius * next_noise_param) * cos((next_deg - deg_span * 0.25) * DEG_TO_RAD),
				(radius * next_noise_param) * sin((next_deg - deg_span * 0.25) * DEG_TO_RAD)));
			vertices.push_back(glm::vec2(
				radius * cos(next_deg * DEG_TO_RAD),
				radius * sin(next_deg * DEG_TO_RAD)));

			ofNoFill();
			ofSetLineWidth(2);
			ofBeginShape();
			ofVertex(vertices[0]);
			ofBezierVertex(vertices[1], vertices[2], vertices[3]);
			ofEndShape();
		}
	}

	ofPopMatrix();
}

//--------------------------------------------------------------
bool Ripple::isDead() {

	return this->life < 0;
}

/* ofApp */

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetLineWidth(3);

	this->fbo.allocate(ofGetWidth() + 25, ofGetHeight() + 25);
	this->fbo.readToPixels(this->pixels);
	this->pixels_mat = cv::Mat(this->pixels.getHeight(), this->pixels.getWidth(), CV_8UC4, this->pixels.getData());
}

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

	if (ofGetFrameNum() % 4 == 0) {

		glm::vec3 location(ofRandom(100, this->fbo.getWidth() - 100), ofRandom(100, this->fbo.getHeight() - 100), ofRandom(800, 1500));
		unique_ptr<Ripple> ripple(new Ripple(location));
		this->ripple_list.push_back(move(ripple));
	}

	this->fbo.begin();
	ofClear(0);

	for (int i = this->ripple_list.size() - 1; i >= 0; i--) {

		if (this->ripple_list[i]->isDead()) {

			this->ripple_list.erase(this->ripple_list.begin() + i);
		}
		else {

			this->ripple_list[i]->update();
			this->ripple_list[i]->draw();
		}
	}

	this->fbo.end();
	this->fbo.readToPixels(this->pixels);

	cv::GaussianBlur(this->pixels_mat, this->pixels_mat, cv::Size(11, 11), 10, 10);
}

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

	ofSetColor(255);

	ofImage draw_image;
	draw_image.setFromPixels(this->pixels);
	draw_image.draw(-5, -5);

	this->fbo.draw(-25, -25);
}

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

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

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#include "ofApp.h"

/* Ripple */

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

Ripple::Ripple() : Ripple(glm::vec3()) { }

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

Ripple::Ripple(glm::vec3 location) {

this->location = location;

this->radius = 1;

this->life = 255;

this->color.setHsb(ofRandom(255), 255, 230);

}

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

void Ripple::update() {

if (this->location.z > 0) {

this->location.z = this->location.z > 20 ? this->location.z - 20 : 0;

return;

}

this->radius += 2;

this->life -= 3;

}

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

void Ripple::draw() {

ofPushMatrix();

ofTranslate(this->location);

ofSetColor(this->color);

if (this->location.z > 0) {

ofDrawLine(glm::vec3(), glm::vec3(0, 0, 30));

}

else {

if (this->life < 200) {

ofSetColor(this->color, ofMap(this->life, 0, 200, 0, 255));

}

int deg_span = 60;

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

int next_deg = deg + deg_span;

float noise_param = ofMap(ofNoise(glm::vec3(

this->location.x + cos(deg * DEG_TO_RAD),

this->location.y + sin(deg * DEG_TO_RAD),

ofGetFrameNum() * 0.008)),

0, 1, 0, 2);

float next_noise_param = ofMap(ofNoise(glm::vec3(

this->location.x + cos((deg + deg_span) * DEG_TO_RAD),

this->location.y + sin((deg + deg_span) * DEG_TO_RAD),

ofGetFrameNum() * 0.008)),

0, 1, 2, 0);

vector<glm::vec2> vertices;

vertices.push_back(glm::vec2(

radius * cos(deg * DEG_TO_RAD),

radius * sin(deg * DEG_TO_RAD)));

vertices.push_back(glm::vec2(

(radius * noise_param) * cos((deg + deg_span * 0.25) * DEG_TO_RAD),

(radius * noise_param) * sin((deg + deg_span * 0.25) * DEG_TO_RAD)));

vertices.push_back(glm::vec2(

(radius * next_noise_param) * cos((next_deg - deg_span * 0.25) * DEG_TO_RAD),

(radius * next_noise_param) * sin((next_deg - deg_span * 0.25) * DEG_TO_RAD)));

vertices.push_back(glm::vec2(

radius * cos(next_deg * DEG_TO_RAD),

radius * sin(next_deg * DEG_TO_RAD)));

ofNoFill();

ofSetLineWidth(2);

ofBeginShape();

ofVertex(vertices[0]);

ofBezierVertex(vertices[1], vertices[2], vertices[3]);

ofEndShape();

}

ofPopMatrix();

}

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

bool Ripple::isDead() {

return this->life < 0;

}

/* ofApp */

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(3);

this->fbo.allocate(ofGetWidth() + 25, ofGetHeight() + 25);

this->fbo.readToPixels(this->pixels);

this->pixels_mat = cv::Mat(this->pixels.getHeight(), this->pixels.getWidth(), CV_8UC4, this->pixels.getData());

}

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

void ofApp::update() {

if (ofGetFrameNum() % 4 == 0) {

glm::vec3 location(ofRandom(100, this->fbo.getWidth() - 100), ofRandom(100, this->fbo.getHeight() - 100), ofRandom(800, 1500));

unique_ptr<Ripple> ripple(new Ripple(location));

this->ripple_list.push_back(move(ripple));

}

this->fbo.begin();

ofClear(0);

for (int i = this->ripple_list.size() - 1; i >= 0; i--) {

if (this->ripple_list[i]->isDead()) {

this->ripple_list.erase(this->ripple_list.begin() + i);

}

else {

this->ripple_list[i]->update();

this->ripple_list[i]->draw();

}

this->fbo.end();

this->fbo.readToPixels(this->pixels);

cv::GaussianBlur(this->pixels_mat, this->pixels_mat, cv::Size(11, 11), 10, 10);

}

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

void ofApp::draw() {

ofSetColor(255);

ofImage draw_image;

draw_image.setFromPixels(this->pixels);

draw_image.draw(-5, -5);

this->fbo.draw(-25, -25);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200809

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