2018年5月 – ページ 8 – プログラミング de 落描き

2018年5月10日2018年5月15日

力場によって動くParticle openFrameworks Box2d

[ Video ]

[ About ]
画面内の4カ所に力場が存在しており、Particleは力場に引っ張られて動いています。また、Particleのスピードにより尻尾のようなものを生えるようにしました。

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxBox2d.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) {}

	ofxBox2d box2d;
	int force_field_radius;
	vector<shared_ptr<ofxBox2dCircle>> circles;
	vector<ofPoint> force_fields;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.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) {}

ofxBox2d box2d;

int force_field_radius;

vector<shared_ptr<ofxBox2dCircle>> circles;

vector<ofPoint> force_fields;

};

#include "ofApp.h"

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

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

	ofSetColor(39);

	// Initialize ofxBox2d
	this->box2d.init();
	this->box2d.setGravity(0, 0);
	this->box2d.createBounds();
	this->box2d.setFPS(60);
	this->box2d.registerGrabbing();

	// Add Circle
	for (int i = 0; i < 255; i++) {

		float radius = 10;
		auto circle = make_shared<ofxBox2dCircle>();
		circle->setPhysics(1.0, 0.63, 0.1);
		circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth() / 2), ofRandom(ofGetHeight() / 2), radius);

		this->circles.push_back(circle);
	}

	// Add Field of Force
	this->force_fields.push_back(ofPoint(ofGetWidth() / 4, ofGetHeight() / 4));
	this->force_fields.push_back(ofPoint(ofGetWidth() / 4 * 3, ofGetHeight() / 4));
	this->force_fields.push_back(ofPoint(ofGetWidth() / 4 * 3, ofGetHeight() / 4 * 3));
	this->force_fields.push_back(ofPoint(ofGetWidth() / 4, ofGetHeight() / 4 * 3));

	this->force_field_radius = 150;
}

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

	// Field of Force
	for (int i = 0; i < this->circles.size(); i++) {

		shared_ptr<ofxBox2dCircle> circle = this->circles[i];
		ofPoint point = circle->getPosition();
		for (int field_index = 0; field_index < this->force_fields.size(); field_index++) {

			float distance = point.distance(this->force_fields[field_index]);
			if (distance < this->force_field_radius) {

				ofPoint p = ofPoint(this->force_field_radius * cos((field_index * 90 + 10) * DEG_TO_RAD), this->force_field_radius * sin((field_index * 90 + 10) * DEG_TO_RAD));
				circle->addForce(p, ofMap(distance, 0, this->force_field_radius, 0.1, 0.01));
			}
		}
	}

	// Compute box2d
	this->box2d.update();
}


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

	// Draw Circles
	for (int i = 0; i < this->circles.size(); i++) {

		float radius = this->circles[i]->getRadius();
		ofPoint point = this->circles[i]->getPosition();
		ofPoint velocity = this->circles[i]->getVelocity();

		ofPushMatrix();
		ofTranslate(point);

		if (velocity.length() < radius) {

			ofDrawCircle(ofPoint(), radius);
		}
		else {

			float velocity_deg = atan2f(velocity.y, velocity.x) * RAD_TO_DEG + 180;
			ofBeginShape();
			for (int deg = velocity_deg + 90; deg < velocity_deg + 270; deg++) {

				ofVertex(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
			}
			ofVertex(-velocity * 2);
			ofEndShape(true);
		}

		ofPopMatrix();
	}
}

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

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

100

101

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofSetColor(39);

// Initialize ofxBox2d

this->box2d.init();

this->box2d.setGravity(0, 0);

this->box2d.createBounds();

this->box2d.setFPS(60);

this->box2d.registerGrabbing();

// Add Circle

for (int i = 0; i < 255; i++) {

float radius = 10;

auto circle = make_shared<ofxBox2dCircle>();

circle->setPhysics(1.0, 0.63, 0.1);

circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth() / 2), ofRandom(ofGetHeight() / 2), radius);

this->circles.push_back(circle);

}

// Add Field of Force

this->force_fields.push_back(ofPoint(ofGetWidth() / 4, ofGetHeight() / 4));

this->force_fields.push_back(ofPoint(ofGetWidth() / 4 * 3, ofGetHeight() / 4));

this->force_fields.push_back(ofPoint(ofGetWidth() / 4 * 3, ofGetHeight() / 4 * 3));

this->force_fields.push_back(ofPoint(ofGetWidth() / 4, ofGetHeight() / 4 * 3));

this->force_field_radius = 150;

}

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

void ofApp::update() {

// Field of Force

for (int i = 0; i < this->circles.size(); i++) {

shared_ptr<ofxBox2dCircle> circle = this->circles[i];

ofPoint point = circle->getPosition();

for (int field_index = 0; field_index < this->force_fields.size(); field_index++) {

float distance = point.distance(this->force_fields[field_index]);

if (distance < this->force_field_radius) {

ofPoint p = ofPoint(this->force_field_radius * cos((field_index * 90 + 10) * DEG_TO_RAD), this->force_field_radius * sin((field_index * 90 + 10) * DEG_TO_RAD));

circle->addForce(p, ofMap(distance, 0, this->force_field_radius, 0.1, 0.01));

}

// Compute box2d

this->box2d.update();

}

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

void ofApp::draw() {

// Draw Circles

for (int i = 0; i < this->circles.size(); i++) {

float radius = this->circles[i]->getRadius();

ofPoint point = this->circles[i]->getPosition();

ofPoint velocity = this->circles[i]->getVelocity();

ofPushMatrix();

ofTranslate(point);

if (velocity.length() < radius) {

ofDrawCircle(ofPoint(), radius);

}

else {

float velocity_deg = atan2f(velocity.y, velocity.x) * RAD_TO_DEG + 180;

ofBeginShape();

for (int deg = velocity_deg + 90; deg < velocity_deg + 270; deg++) {

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

}

ofVertex(-velocity * 2);

ofEndShape(true);

}

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180510

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2018年5月9日2018年5月9日

中央に力場 openFrameworks ofxBox2d

[ Video ]

[ About ]
ofxBox2dがopenFramworks0.10.0に、既に対応しているようだったので、新しい環境で使ってみました。ofxBox2dの環境構築については、Qiita記事を書きましたので、下記からご参照下さい。

openFrameworks0.10.0でofxBox2dを動かす(Windows)
https://qiita.com/junkiyoshi/items/68e602568a0c94840bec

今回は重力(x, y)を、それぞれ0として無重力にする代わりに、中央にフレーム番号と連動して変動する力場を作ってみました。Circle自身は移動する力を持っていませんが、力場から作用する力に引っ張られて飛び出していきます。

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxBox2d.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) {}

	ofxBox2d box2d;
	vector<pair<shared_ptr<ofxBox2dCircle>, ofColor>> circles;
	int force_field_radius;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.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) {}

ofxBox2d box2d;

vector<pair<shared_ptr<ofxBox2dCircle>, ofColor>> circles;

int force_field_radius;

};

#include "ofApp.h"

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

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

	// Initialize ofxBox2d
	this->box2d.init();
    this->box2d.setGravity(0, 0);
	this->box2d.createBounds();
	this->box2d.setFPS(60);
	this->box2d.registerGrabbing();

	// Add Circle
	for (int i = 0; i < 256; i++) {

		float radius = ofRandom(8.0, 15.0);
		auto circle = make_shared<ofxBox2dCircle>();
		circle->setPhysics(1.0, 0.63, 0.1);
		circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth()), ofRandom(ofGetHeight()), radius);

		ofColor color;
		color.setHsb(ofRandom(255), 239, 239);

		this->circles.push_back(make_pair(circle, color));
	}

	this->force_field_radius = 200;
}

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

	// Field of Force on Center
	for (int i = 0; i < this->circles.size(); i++) {

		shared_ptr<ofxBox2dCircle> circle = get<0>(this->circles[i]);
		ofPoint point = get<0>(this->circles[i])->getPosition();

		float distance = point.distance(ofPoint(ofGetWidth() / 2, ofGetHeight() / 2));
		if(distance < this->force_field_radius) {

			ofPoint p = ofPoint(this->force_field_radius * cos(ofGetFrameNum() * DEG_TO_RAD), this->force_field_radius * sin(ofGetFrameNum() * DEG_TO_RAD));
			circle->addForce(p, ofMap(distance, 0, 200, 10, 1));
		}
	}

	// Compute box2d
	this->box2d.update();
}


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

	// Draw Filed of Force
	ofPushMatrix();
	ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

	ofNoFill();
	ofSetColor(39);
	ofSetLineWidth(0.5);
	ofBeginShape();
	for (int deg = 0; deg < 360; deg += 1) {

		ofVertex(this->force_field_radius * cos(deg * DEG_TO_RAD), this->force_field_radius * sin(deg * DEG_TO_RAD));
	}
	ofEndShape(true);

	ofFill();
	ofBeginShape();
	for (int deg = ofGetFrameNum(); deg < ofGetFrameNum() + 360; deg += 120) {

		ofVertex(this->force_field_radius * cos(deg * DEG_TO_RAD), this->force_field_radius * sin(deg * DEG_TO_RAD));
	}
	ofEndShape(true);

	ofPopMatrix();

	// Draw Circles
	ofSetLineWidth(3);
	for (int i = 0; i < this->circles.size(); i++) {

		ofSetColor(get<1>(this->circles[i]));
		float radius = get<0>(this->circles[i])->getRadius();
		ofPoint point = get<0>(this->circles[i])->getPosition();

		ofDrawCircle(point, radius);
		ofDrawLine(point, point - get<0>(this->circles[i])->getVelocity());
	}
}

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

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

100

101

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

// Initialize ofxBox2d

this->box2d.init();

this->box2d.setGravity(0, 0);

this->box2d.createBounds();

this->box2d.setFPS(60);

this->box2d.registerGrabbing();

// Add Circle

for (int i = 0; i < 256; i++) {

float radius = ofRandom(8.0, 15.0);

auto circle = make_shared<ofxBox2dCircle>();

circle->setPhysics(1.0, 0.63, 0.1);

circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth()), ofRandom(ofGetHeight()), radius);

ofColor color;

color.setHsb(ofRandom(255), 239, 239);

this->circles.push_back(make_pair(circle, color));

}

this->force_field_radius = 200;

}

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

void ofApp::update() {

// Field of Force on Center

for (int i = 0; i < this->circles.size(); i++) {

shared_ptr<ofxBox2dCircle> circle = get<0>(this->circles[i]);

ofPoint point = get<0>(this->circles[i])->getPosition();

float distance = point.distance(ofPoint(ofGetWidth() / 2, ofGetHeight() / 2));

if(distance < this->force_field_radius) {

ofPoint p = ofPoint(this->force_field_radius * cos(ofGetFrameNum() * DEG_TO_RAD), this->force_field_radius * sin(ofGetFrameNum() * DEG_TO_RAD));

circle->addForce(p, ofMap(distance, 0, 200, 10, 1));

}

// Compute box2d

this->box2d.update();

}

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

void ofApp::draw() {

// Draw Filed of Force

ofPushMatrix();

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

ofNoFill();

ofSetColor(39);

ofSetLineWidth(0.5);

ofBeginShape();

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

ofVertex(this->force_field_radius * cos(deg * DEG_TO_RAD), this->force_field_radius * sin(deg * DEG_TO_RAD));

}

ofEndShape(true);

ofFill();

ofBeginShape();

for (int deg = ofGetFrameNum(); deg < ofGetFrameNum() + 360; deg += 120) {

ofVertex(this->force_field_radius * cos(deg * DEG_TO_RAD), this->force_field_radius * sin(deg * DEG_TO_RAD));

}

ofEndShape(true);

ofPopMatrix();

// Draw Circles

ofSetLineWidth(3);

for (int i = 0; i < this->circles.size(); i++) {

ofSetColor(get<1>(this->circles[i]));

float radius = get<0>(this->circles[i])->getRadius();

ofPoint point = get<0>(this->circles[i])->getPosition();

ofDrawCircle(point, radius);

ofDrawLine(point, point - get<0>(this->circles[i])->getVelocity());

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/insta20180509

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2018年5月8日2018年5月8日

OpenCVで影つけ雨降り openFrameworks

[ Video ]

[ About ]
Twitterのタイムラインで水の波紋を作っている方を見かけて「影を活かすならこれじゃん！」と、過去のヤツと昨日のヤツを組み合わせました。

影を足しただけですが、水面と底面が感じられて、透明感が当社比390% UP！

最近は、あえてクラスは起こさずに、ofSeedRandomを使って、生成された固定の乱数とフレーム番号の組み合わせで乗り切ってきたんですが、今回は断念してRippleクラスを作りました。

あとopenFrameworksの0.10.0が出たのでVisual Studio 2017で作りました。あんま自分が触ってる周りでは関係なさそうですが…

[ Source ]

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

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>> ripples;

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

#pragma once

#include "ofMain.h"

#include "Ripple.h"

#include "opencv2/opencv.hpp"

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>> ripples;

ofFbo fbo;

ofPixels pixels;

cv::Mat pixels_mat;

};

#include "ofApp.h"

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

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

	ofNoFill();
	ofSetLineWidth(1.5);

	// Fbo Initialize (+ Shadow Gap)
	this->fbo.allocate(ofGetWidth() + 25, ofGetHeight() + 25);

	// Link pixels And pixels_mat
	this->fbo.readToPixels(this->pixels);
	this->pixels_mat = cv::Mat(this->pixels.getHeight(), this->pixels.getWidth(), CV_8UC4, this->pixels.getData());
}

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

	// Make New Ripple
	if (ofGetFrameNum() % 3 == 0) {

		ofPoint point(ofRandom(this->fbo.getWidth()), ofRandom(this->fbo.getHeight()), ofRandom(500, 1000));
		unique_ptr<Ripple> ripple(new Ripple(point));
		this->ripples.push_back(move(ripple));
	}

	// Draw Ripples
	this->fbo.begin();
	ofClear(0);

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

		if (this->ripples[i]->isLife()) {

			this->ripples[i]->update();
			this->ripples[i]->draw();
		}
		else {

			this->ripples.erase(this->ripples.begin() + i);
		}
	}

	this->fbo.end();

	// Copy Fbo To pixels
	this->fbo.readToPixels(this->pixels);

	// Gray
	cv::Mat gray_mat;
	cv::cvtColor(this->pixels_mat, gray_mat, cv::COLOR_RGBA2GRAY);
	for (int y = 0; y < this->pixels_mat.cols; y++) {

		for (int x = 0; x < this->pixels_mat.rows; x++) {

			if (gray_mat.at<unsigned char>(y, x) > 0) {

				this->pixels_mat.at<cv::Vec4b>(y, x) = cv::Vec4b(gray_mat.at<unsigned char>(y, x), gray_mat.at<unsigned char>(y, x), gray_mat.at<unsigned char>(y, x), this->pixels_mat.at<cv::Vec4b>(y, x)[3]);
			}
		}
	}

	// Blur Process
	cv::GaussianBlur(this->pixels_mat, this->pixels_mat, cv::Size(19, 19), 10, 10);
}

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

	ofSetColor(255);

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

	// Draw Fbo Image 
	this->fbo.draw(-25, -25);
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofNoFill();

ofSetLineWidth(1.5);

// Fbo Initialize (+ Shadow Gap)

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

// Link pixels And pixels_mat

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

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

}

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

void ofApp::update() {

// Make New Ripple

if (ofGetFrameNum() % 3 == 0) {

ofPoint point(ofRandom(this->fbo.getWidth()), ofRandom(this->fbo.getHeight()), ofRandom(500, 1000));

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

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

}

// Draw Ripples

this->fbo.begin();

ofClear(0);

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

if (this->ripples[i]->isLife()) {

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

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

}

else {

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

}

this->fbo.end();

// Copy Fbo To pixels

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

// Gray

cv::Mat gray_mat;

cv::cvtColor(this->pixels_mat, gray_mat, cv::COLOR_RGBA2GRAY);

for (int y = 0; y < this->pixels_mat.cols; y++) {

for (int x = 0; x < this->pixels_mat.rows; x++) {

if (gray_mat.at<unsigned char>(y, x) > 0) {

this->pixels_mat.at<cv::Vec4b>(y, x) = cv::Vec4b(gray_mat.at<unsigned char>(y, x), gray_mat.at<unsigned char>(y, x), gray_mat.at<unsigned char>(y, x), this->pixels_mat.at<cv::Vec4b>(y, x)[3]);

}

// Blur Process

cv::GaussianBlur(this->pixels_mat, this->pixels_mat, cv::Size(19, 19), 10, 10);

}

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

void ofApp::draw() {

ofSetColor(255);

// Draw Shadow

ofImage draw_image;

draw_image.setFromPixels(this->pixels);

draw_image.draw(-5, -5);

// Draw Fbo Image

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

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

class Ripple
{
public:

	Ripple();
	Ripple(ofPoint point);
	void update();
	void draw();
	bool isLife();
private:

	ofPoint point;
	float radius;
	float radius_max;
	float radius_span;
	ofColor body_color;
	bool life;
};

#pragma once

#include "ofMain.h"

class Ripple

{

public:

Ripple();

Ripple(ofPoint point);

void update();

void draw();

bool isLife();

private:

ofPoint point;

float radius;

float radius_max;

float radius_span;

ofColor body_color;

bool life;

};

#include "Ripple.h"

Ripple::Ripple() : Ripple(ofPoint()) {

}

Ripple::Ripple(ofPoint point) {

	this->point = point;
	this->radius = 1;
	this->radius_max = point.z / 10;
	this->body_color.setHsb(ofRandom(255), 255, 255);
	this->life = true;
}

void Ripple::update() {

	if (this->life == false) {

		return;
	}

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

		this->point -= ofPoint(0, 0, 30);
		return;
	}

	if (this->radius > this->radius_max) {

		this->life = false;
		return;
	}
	else {

		this->radius += 1;
	}
}

void Ripple::draw() {

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

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

		ofSetColor(this->body_color);
		ofDrawLine(ofPoint(), ofPoint(0, 0, 30));
	}
	else {

		ofSetColor(this->body_color, ofMap(this->radius, 1, this->radius_max, 255, 10));
		ofBeginShape();
		for (int deg = 0; deg < 360; deg++) {

			ofVertex(this->radius * cos(deg * DEG_TO_RAD), this->radius * sin(deg * DEG_TO_RAD));
		}
		ofEndShape(true);
	}

	ofPopMatrix();
}

bool Ripple::isLife() {

	return this->life;
}

#include "Ripple.h"

Ripple::Ripple() : Ripple(ofPoint()) {

}

Ripple::Ripple(ofPoint point) {

this->point = point;

this->radius = 1;

this->radius_max = point.z / 10;

this->body_color.setHsb(ofRandom(255), 255, 255);

this->life = true;

}

void Ripple::update() {

if (this->life == false) {

return;

}

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

this->point -= ofPoint(0, 0, 30);

return;

}

if (this->radius > this->radius_max) {

this->life = false;

return;

}

else {

this->radius += 1;

}

void Ripple::draw() {

ofPushMatrix();

ofTranslate(this->point);

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

ofSetColor(this->body_color);

ofDrawLine(ofPoint(), ofPoint(0, 0, 30));

}

else {

ofSetColor(this->body_color, ofMap(this->radius, 1, this->radius_max, 255, 10));

ofBeginShape();

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

ofVertex(this->radius * cos(deg * DEG_TO_RAD), this->radius * sin(deg * DEG_TO_RAD));

}

ofEndShape(true);

}

ofPopMatrix();

}

bool Ripple::isLife() {

return this->life;

}

[ Link ]
https://github.com/junkiyoshi/Insta20180508

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