2018年2月22日 – プログラミング de 落描き

[ Video ]

[ About ]
ドーナツ状の座標を流れていくParticleを実装しました。数学の分野ではトーラスと呼ばれているらしく、方程式がwikiにも書いてあったので、拝借して実装してみました。

トーラス
https://ja.wikipedia.org/wiki/%E3%83%88%E3%83%BC%E3%83%A9%E3%82%B9

[ Source ]

#include "ofMain.h"
#include "Particle.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;
	std::vector<std::unique_ptr<Particle>> particles;
};

#include "ofMain.h"

#include "Particle.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;

std::vector<std::unique_ptr<Particle>> particles;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofBackground(0);
	ofSetWindowTitle("Insta");

	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
	ofEnableDepthTest();
	ofSetLineWidth(1.2);

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

		std::unique_ptr<Particle> particle(new Particle(i));
		this->particles.push_back(std::move(particle));
	}
}

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

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

		this->particles[i]->update();
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.5);

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

		this->particles[i]->draw();
	}

	
	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(0);

ofSetWindowTitle("Insta");

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

ofEnableDepthTest();

ofSetLineWidth(1.2);

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

std::unique_ptr<Particle> particle(new Particle(i));

this->particles.push_back(std::move(particle));

}

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

void ofApp::update() {

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

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

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.5);

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

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

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

class Particle {
public:

	Particle(float value);
	~Particle();

	void update();
	void draw();

	ofPoint make_point(float radius, float small_radius, float deg, float small_deg);
private:

	float radius;
	float small_radius;
	float deg;
	float small_deg;
	float deg_span;
	float small_deg_span;

	ofColor body_color;
};

#pragma once

#include "ofMain.h"

class Particle {

public:

Particle(float value);

~Particle();

void update();

void draw();

ofPoint make_point(float radius, float small_radius, float deg, float small_deg);

private:

float radius;

float small_radius;

float deg;

float small_deg;

float deg_span;

float small_deg_span;

ofColor body_color;

};

#include "Particle.h"

//--------------------------------------------------------------
Particle::Particle(float value) {

	this->radius = 230;
	this->small_radius = 70;
	this->deg = value / 255.f * 360.f;
	this->small_deg = ofRandom(0, 360);
	this->deg_span = 1;
	this->small_deg_span = 10;
	this->body_color.setHsb(value, 255, 255);
}

//--------------------------------------------------------------
Particle::~Particle() { }

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

	this->deg += this->deg_span;
	this->small_deg += this->small_deg_span;
}

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

	ofSetColor(this->body_color, 255);
	ofVec3f point = make_point(this->radius, this->small_radius, this->deg, this->small_deg);
	ofDrawSphere(point, 1.5);

	for (int i = 0; i < 12; i++) {

		ofSetColor(this->body_color, 255 - i * 25);
		ofVec3f point_1 = make_point(this->radius, this->small_radius, this->deg - this->deg_span * i, this->small_deg - this->small_deg_span * i);
		ofVec3f point_2 = make_point(this->radius, this->small_radius, this->deg - this->deg_span * (i + 1), this->small_deg - this->small_deg_span * (i + 1));
		ofDrawLine(point_1, point_2);
	}
}

//--------------------------------------------------------------
ofPoint Particle::make_point(float radius, float small_radius, float deg, float small_deg) {

	float x_1 = radius * cos(deg * DEG_TO_RAD);
	float y_1 = radius * sin(deg * DEG_TO_RAD);

	float x_2 = small_radius * cos(small_deg * DEG_TO_RAD) * cos(deg * DEG_TO_RAD);
	float y_2 = small_radius * cos(small_deg * DEG_TO_RAD) * sin(deg * DEG_TO_RAD);

	float x = x_1 + x_2;
	float y = y_1 + y_2;
	float z = small_radius * sin(small_deg * DEG_TO_RAD);

	return ofVec3f(x, y, z);
}

#include "Particle.h"

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

Particle::Particle(float value) {

this->radius = 230;

this->small_radius = 70;

this->deg = value / 255.f * 360.f;

this->small_deg = ofRandom(0, 360);

this->deg_span = 1;

this->small_deg_span = 10;

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

}

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

Particle::~Particle() { }

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

void Particle::update() {

this->deg += this->deg_span;

this->small_deg += this->small_deg_span;

}

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

void Particle::draw() {

ofSetColor(this->body_color, 255);

ofVec3f point = make_point(this->radius, this->small_radius, this->deg, this->small_deg);

ofDrawSphere(point, 1.5);

for (int i = 0; i < 12; i++) {

ofSetColor(this->body_color, 255 - i * 25);

ofVec3f point_1 = make_point(this->radius, this->small_radius, this->deg - this->deg_span * i, this->small_deg - this->small_deg_span * i);

ofVec3f point_2 = make_point(this->radius, this->small_radius, this->deg - this->deg_span * (i + 1), this->small_deg - this->small_deg_span * (i + 1));

ofDrawLine(point_1, point_2);

}

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

ofPoint Particle::make_point(float radius, float small_radius, float deg, float small_deg) {

float x_1 = radius * cos(deg * DEG_TO_RAD);

float y_1 = radius * sin(deg * DEG_TO_RAD);

float x_2 = small_radius * cos(small_deg * DEG_TO_RAD) * cos(deg * DEG_TO_RAD);

float y_2 = small_radius * cos(small_deg * DEG_TO_RAD) * sin(deg * DEG_TO_RAD);

float x = x_1 + x_2;

float y = y_1 + y_2;

float z = small_radius * sin(small_deg * DEG_TO_RAD);

return ofVec3f(x, y, z);

}

[ Link ]
https://github.com/junkiyoshi/Insta20180221

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日: 2018年2月22日

ランニング・トーラス　openFrameworks