mouse – プログラミング de 落描き

2018年1月15日2018年1月16日

Boxの中に閉じ込められたBoxで線を結ぶ ofxBullet openFrameworks

[ Video ]

[ About ]
引き続きofxBulletを使って3D物理演算です。

Boxの中にBoxが入っていますが、距離が近いもの同士で線で結ぶようにしました。お互いの距離が近いほど濃い色、遠くなれば薄くなります。

Particleを線で繋いでいく手法は良くやるのですが、物理演算と組み合わせるといつもと違う動きが見えて面白いです。あまり激しく動かすと壁をすり抜けて飛んでいくヤツがチラホラいますね(笑)

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxBullet.h"

class ofApp : public ofBaseApp {

public:
	~ofApp();

	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) {};

	ofCamera cam;
	ofLight light;

	ofxBulletWorldRigid world;
	ofxBulletCustomShape* boundsShape;
	vector<ofxBulletBox*> boxes;
	vector<ofColor> boxes_color;
};

#pragma once

#include "ofMain.h"

#include "ofxBullet.h"

class ofApp : public ofBaseApp {

public:

~ofApp();

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) {};

ofCamera cam;

ofLight light;

ofxBulletWorldRigid world;

ofxBulletCustomShape* boundsShape;

vector<ofxBulletBox*> boxes;

vector<ofColor> boxes_color;

};

#include "ofApp.h"

//--------------------------------------------------------------
ofApp::~ofApp() {

	delete this->boundsShape;

	for (ofxBulletBox* tmp : this->boxes) { 
		delete tmp;
	}
	this->boxes.clear();
}

//--------------------------------------------------------------
void ofApp::setup() {
	ofSetFrameRate(60);
	ofBackground(0);
	ofSetWindowTitle("Insta");

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

	this->cam.setPosition(ofVec3f(0, 3.f, -30.f));
	this->cam.lookAt(ofVec3f(0, 0, 0), ofVec3f(0, -1, 0));

	this->world.setup();
	this->world.enableGrabbing();
	this->world.setCamera(&this->cam);
	this->world.setGravity(ofVec3f(0.0, 64.0, 0));

	ofVec3f start_location;
	ofPoint dimens;
	float bounds_width = 400;
	float h_width = bounds_width * 0.5;
	float depth = 10.;
	float h_depth = depth * 0.5;
	this->boundsShape = new ofxBulletCustomShape();
	this->boundsShape->create(world.world, ofVec3f(0, 0, 0), 10.);

	for (int i = 0; i < 6; i++) {
		if (i == 0) { // ground //
			start_location.set(0., h_width + h_depth, 0.);
			dimens.set(bounds_width, depth, bounds_width);
		}
		else if (i == 1) { // back wall //
			start_location.set(0, 0, h_width + h_depth);
			dimens.set(bounds_width, bounds_width, depth);
		}
		else if (i == 2) { // right wall //
			start_location.set(h_width + h_depth, 0, 0.);
			dimens.set(depth, bounds_width, bounds_width);
		}
		else if (i == 3) { // left wall //
			start_location.set(-h_width - h_depth, 0, 0.);
			dimens.set(depth, bounds_width, bounds_width);
		}
		else if (i == 4) { // ceiling //
			start_location.set(0, -h_width - h_depth, 0.);
			dimens.set(bounds_width, depth, bounds_width);
		}
		else if (i == 5) { // front wall //
			start_location.set(0, 0, -h_width - h_depth);
			dimens.set(bounds_width, bounds_width, depth);
		}
		btBoxShape* boxShape = ofBtGetBoxCollisionShape(dimens.x, dimens.y, dimens.z);
		this->boundsShape->addShape(boxShape, start_location);
	}
	this->boundsShape->add();

	for (int i = 0; i < 512; i++) {
		ofxBulletBox* box = new ofxBulletBox();
		float size = 10;
		box->create(this->world.world, ofVec3f(ofRandom(-100, 100), ofRandom(-100, 100), ofRandom(-100, 100)), 1.0, size, size, size);
		box->setRestitution(1.0);
		box->add();

		this->boxes.push_back(box);

		ofColor color;
		color.setHsb(ofRandom(255), 255, 255);
		this->boxes_color.push_back(color);
	}

	this->light.setPosition(ofVec3f(0, 0, 512));
}

//--------------------------------------------------------------
void ofApp::update() {
	if (!ofGetMousePressed()) {
		ofVec3f diff = ofVec3f(0, 0, 0) - boundsShape->getPosition();
		diff *= 500.f;
		boundsShape->applyCentralForce(diff);
	}

	this->world.update();
}

//--------------------------------------------------------------
void ofApp::draw() {
	ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

	//ofEnableLighting();
	//this->light.enable();

	ofNoFill();
	if (ofGetMousePressed()) {
		ofSetColor(255, 255, 0);
	} else {
		ofSetColor(255);
	}
	boundsShape->transformGL();
	ofDrawBox(ofVec3f(0, 0, 0), 400);
	boundsShape->restoreTransformGL();
	ofFill();

	for (int i = 0; i < this->boxes.size(); i++) {
		ofSetColor(this->boxes_color[i], 128);
		ofDrawBox(this->boxes[i]->getPosition(), 3, 3, 3);

		for (int j = i + 1; j < this->boxes.size(); j++) {
			float distance = this->boxes[i]->getPosition().distanceSquared(this->boxes[j]->getPosition());
			if (distance < 40 * 40) {		
				ofSetColor(this->boxes_color[i], ofMap(distance, 0, 40 * 40, 255, 0));
				ofDrawLine(this->boxes[i]->getPosition(), this->boxes[j]->getPosition());
			}
		}
	}
}

//--------------------------------------------------------------
void ofApp::keyPressed(int key) {
	if (key == 'a') {
		this->world.setGravity(ofVec3f(0.0, 0.0, 0));
	}

	if (key == 's') {
		this->world.setGravity(ofVec3f(0.0, 64.0, 0));
	}
}

//========================================================================
int main() {
	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

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

ofApp::~ofApp() {

delete this->boundsShape;

for (ofxBulletBox* tmp : this->boxes) {

delete tmp;

}

this->boxes.clear();

}

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(0);

ofSetWindowTitle("Insta");

ofEnableDepthTest();

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

this->cam.setPosition(ofVec3f(0, 3.f, -30.f));

this->cam.lookAt(ofVec3f(0, 0, 0), ofVec3f(0, -1, 0));

this->world.setup();

this->world.enableGrabbing();

this->world.setCamera(&this->cam);

this->world.setGravity(ofVec3f(0.0, 64.0, 0));

ofVec3f start_location;

ofPoint dimens;

float bounds_width = 400;

float h_width = bounds_width * 0.5;

float depth = 10.;

float h_depth = depth * 0.5;

this->boundsShape = new ofxBulletCustomShape();

this->boundsShape->create(world.world, ofVec3f(0, 0, 0), 10.);

for (int i = 0; i < 6; i++) {

if (i == 0) { // ground //

start_location.set(0., h_width + h_depth, 0.);

dimens.set(bounds_width, depth, bounds_width);

}

else if (i == 1) { // back wall //

start_location.set(0, 0, h_width + h_depth);

dimens.set(bounds_width, bounds_width, depth);

}

else if (i == 2) { // right wall //

start_location.set(h_width + h_depth, 0, 0.);

dimens.set(depth, bounds_width, bounds_width);

}

else if (i == 3) { // left wall //

start_location.set(-h_width - h_depth, 0, 0.);

dimens.set(depth, bounds_width, bounds_width);

}

else if (i == 4) { // ceiling //

start_location.set(0, -h_width - h_depth, 0.);

dimens.set(bounds_width, depth, bounds_width);

}

else if (i == 5) { // front wall //

start_location.set(0, 0, -h_width - h_depth);

dimens.set(bounds_width, bounds_width, depth);

}

btBoxShape* boxShape = ofBtGetBoxCollisionShape(dimens.x, dimens.y, dimens.z);

this->boundsShape->addShape(boxShape, start_location);

}

this->boundsShape->add();

for (int i = 0; i < 512; i++) {

ofxBulletBox* box = new ofxBulletBox();

float size = 10;

box->create(this->world.world, ofVec3f(ofRandom(-100, 100), ofRandom(-100, 100), ofRandom(-100, 100)), 1.0, size, size, size);

box->setRestitution(1.0);

box->add();

this->boxes.push_back(box);

ofColor color;

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

this->boxes_color.push_back(color);

}

this->light.setPosition(ofVec3f(0, 0, 512));

}

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

void ofApp::update() {

if (!ofGetMousePressed()) {

ofVec3f diff = ofVec3f(0, 0, 0) - boundsShape->getPosition();

diff *= 500.f;

boundsShape->applyCentralForce(diff);

}

this->world.update();

}

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

void ofApp::draw() {

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

//ofEnableLighting();

//this->light.enable();

ofNoFill();

if (ofGetMousePressed()) {

ofSetColor(255, 255, 0);

} else {

ofSetColor(255);

}

boundsShape->transformGL();

ofDrawBox(ofVec3f(0, 0, 0), 400);

boundsShape->restoreTransformGL();

ofFill();

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

ofSetColor(this->boxes_color[i], 128);

ofDrawBox(this->boxes[i]->getPosition(), 3, 3, 3);

for (int j = i + 1; j < this->boxes.size(); j++) {

float distance = this->boxes[i]->getPosition().distanceSquared(this->boxes[j]->getPosition());

if (distance < 40 * 40) {

ofSetColor(this->boxes_color[i], ofMap(distance, 0, 40 * 40, 255, 0));

ofDrawLine(this->boxes[i]->getPosition(), this->boxes[j]->getPosition());

}

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

void ofApp::keyPressed(int key) {

if (key == 'a') {

this->world.setGravity(ofVec3f(0.0, 0.0, 0));

}

if (key == 's') {

this->world.setGravity(ofVec3f(0.0, 64.0, 0));

}

//========================================================================

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180114

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2018年1月13日2018年1月16日

Boxの中に閉じ込められたBox ofxBullet openFrameworks

[ Video ]

[ About ]
ofxBulletというAddon使って3Dの物理演算をしています。

Boxの中にBoxを入れてシェイクしています。
立方体の枠が黄色になったときは、マウスでドラッグしている時です。

主にofxBulletのサンプルCustomShapesExampleから流用しました。
興味がある方はそちらもご参照下さい。

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxBullet.h"

class ofApp : public ofBaseApp {

public:
	~ofApp();

	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) {};

	ofCamera cam;
	ofLight light;

	ofxBulletWorldRigid world;
	ofxBulletCustomShape* boundsShape;
	vector<ofxBulletBox*> boxes;
	vector<ofColor> boxes_color;
};

#pragma once

#include "ofMain.h"

#include "ofxBullet.h"

class ofApp : public ofBaseApp {

public:

~ofApp();

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) {};

ofCamera cam;

ofLight light;

ofxBulletWorldRigid world;

ofxBulletCustomShape* boundsShape;

vector<ofxBulletBox*> boxes;

vector<ofColor> boxes_color;

};

#include "ofApp.h"

//--------------------------------------------------------------
ofApp::~ofApp() {

	delete this->boundsShape;

	for (ofxBulletBox* tmp : this->boxes) { 
		delete tmp;
	}
	this->boxes.clear();
}

//--------------------------------------------------------------
void ofApp::setup() {
	ofSetFrameRate(60);
	ofEnableDepthTest();
	ofBackground(0);
	ofSetWindowTitle("Insta");

	this->cam.setPosition(ofVec3f(0, 3.f, -30.f));
	this->cam.lookAt(ofVec3f(0, 0, 0), ofVec3f(0, -1, 0));

	this->world.setup();
	this->world.enableGrabbing();
	this->world.setCamera(&this->cam);
	this->world.setGravity(ofVec3f(0.0, 64.0, 0));

	ofVec3f start_location;
	ofPoint dimens;
	float bounds_width = 300;
	float h_width = bounds_width * 0.5;
	float depth = 10.;
	float h_depth = depth * 0.5;
	this->boundsShape = new ofxBulletCustomShape();
	this->boundsShape->create(world.world, ofVec3f(0, 0, 0), 10.);

	for (int i = 0; i < 6; i++) {
		if (i == 0) { // ground //
			start_location.set(0., h_width + h_depth, 0.);
			dimens.set(bounds_width, depth, bounds_width);
		}
		else if (i == 1) { // back wall //
			start_location.set(0, 0, h_width + h_depth);
			dimens.set(bounds_width, bounds_width, depth);
		}
		else if (i == 2) { // right wall //
			start_location.set(h_width + h_depth, 0, 0.);
			dimens.set(depth, bounds_width, bounds_width);
		}
		else if (i == 3) { // left wall //
			start_location.set(-h_width - h_depth, 0, 0.);
			dimens.set(depth, bounds_width, bounds_width);
		}
		else if (i == 4) { // ceiling //
			start_location.set(0, -h_width - h_depth, 0.);
			dimens.set(bounds_width, depth, bounds_width);
		}
		else if (i == 5) { // front wall //
			start_location.set(0, 0, -h_width - h_depth);
			dimens.set(bounds_width, bounds_width, depth);
		}
		btBoxShape* boxShape = ofBtGetBoxCollisionShape(dimens.x, dimens.y, dimens.z);
		this->boundsShape->addShape(boxShape, start_location);
	}
	this->boundsShape->add();

	for (int i = 0; i < 50; i++) {
		ofxBulletBox* box = new ofxBulletBox();
		float size = 15;
		box->create(this->world.world, ofVec3f(ofRandom(-100, 100), ofRandom(-100, 100), ofRandom(-100, 100)), 1.0, size, size, size);
		box->setRestitution(1.0);
		box->add();

		this->boxes.push_back(box);

		ofColor color;
		color.setHsb(ofRandom(255), 255, 255);
		this->boxes_color.push_back(color);
	}

	this->light.setPosition(ofVec3f(0, 0, 512));
}

//--------------------------------------------------------------
void ofApp::update() {
	
	if (!ofGetMousePressed()) {
		ofVec3f diff = ofVec3f(0, 0, 0) - boundsShape->getPosition();
		diff *= 300.f;
		boundsShape->applyCentralForce(diff);
	}

	this->world.update();
}

//--------------------------------------------------------------
void ofApp::draw() {
	ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

	ofEnableLighting();
	this->light.enable();

	ofNoFill();
	if (ofGetMousePressed()) {
		ofSetColor(255, 255, 0);
	} else {
		ofSetColor(255);
	}
	boundsShape->transformGL();
	ofDrawBox(ofVec3f(0, 0, 0), 300);
	boundsShape->restoreTransformGL();
	ofFill();

	for (int i = 0; i < this->boxes.size(); i++) {
		ofSetColor(this->boxes_color[i]);
		this->boxes[i]->draw();
	}

}

//========================================================================
int main() {
	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

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

ofApp::~ofApp() {

delete this->boundsShape;

for (ofxBulletBox* tmp : this->boxes) {

delete tmp;

}

this->boxes.clear();

}

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

void ofApp::setup() {

ofSetFrameRate(60);

ofEnableDepthTest();

ofBackground(0);

ofSetWindowTitle("Insta");

this->cam.setPosition(ofVec3f(0, 3.f, -30.f));

this->cam.lookAt(ofVec3f(0, 0, 0), ofVec3f(0, -1, 0));

this->world.setup();

this->world.enableGrabbing();

this->world.setCamera(&this->cam);

this->world.setGravity(ofVec3f(0.0, 64.0, 0));

ofVec3f start_location;

ofPoint dimens;

float bounds_width = 300;

float h_width = bounds_width * 0.5;

float depth = 10.;

float h_depth = depth * 0.5;

this->boundsShape = new ofxBulletCustomShape();

this->boundsShape->create(world.world, ofVec3f(0, 0, 0), 10.);

for (int i = 0; i < 6; i++) {

if (i == 0) { // ground //

start_location.set(0., h_width + h_depth, 0.);

dimens.set(bounds_width, depth, bounds_width);

}

else if (i == 1) { // back wall //

start_location.set(0, 0, h_width + h_depth);

dimens.set(bounds_width, bounds_width, depth);

}

else if (i == 2) { // right wall //

start_location.set(h_width + h_depth, 0, 0.);

dimens.set(depth, bounds_width, bounds_width);

}

else if (i == 3) { // left wall //

start_location.set(-h_width - h_depth, 0, 0.);

dimens.set(depth, bounds_width, bounds_width);

}

else if (i == 4) { // ceiling //

start_location.set(0, -h_width - h_depth, 0.);

dimens.set(bounds_width, depth, bounds_width);

}

else if (i == 5) { // front wall //

start_location.set(0, 0, -h_width - h_depth);

dimens.set(bounds_width, bounds_width, depth);

}

btBoxShape* boxShape = ofBtGetBoxCollisionShape(dimens.x, dimens.y, dimens.z);

this->boundsShape->addShape(boxShape, start_location);

}

this->boundsShape->add();

for (int i = 0; i < 50; i++) {

ofxBulletBox* box = new ofxBulletBox();

float size = 15;

box->create(this->world.world, ofVec3f(ofRandom(-100, 100), ofRandom(-100, 100), ofRandom(-100, 100)), 1.0, size, size, size);

box->setRestitution(1.0);

box->add();

this->boxes.push_back(box);

ofColor color;

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

this->boxes_color.push_back(color);

}

this->light.setPosition(ofVec3f(0, 0, 512));

}

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

void ofApp::update() {

if (!ofGetMousePressed()) {

ofVec3f diff = ofVec3f(0, 0, 0) - boundsShape->getPosition();

diff *= 300.f;

boundsShape->applyCentralForce(diff);

}

this->world.update();

}

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

void ofApp::draw() {

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

ofEnableLighting();

this->light.enable();

ofNoFill();

if (ofGetMousePressed()) {

ofSetColor(255, 255, 0);

} else {

ofSetColor(255);

}

boundsShape->transformGL();

ofDrawBox(ofVec3f(0, 0, 0), 300);

boundsShape->restoreTransformGL();

ofFill();

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

ofSetColor(this->boxes_color[i]);

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

}

//========================================================================

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180112

ofxBullet
https://github.com/NickHardeman/ofxBullet

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Amazon

[ Sponsor Link ]

2018年1月4日2018年1月10日

Insta20180103

[ Video ]

[ About ]
TrueTypeFontから輪郭の座標を取得して逃げるParticleを生成。
Particle created from TrueTypeFont locations.

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofFbo.h"
#include "Particle.h"

class ofApp : public ofBaseApp {

public:
	~ofApp();

	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) {};

	ofFbo fbo;
	
	ofTrueTypeFont font;
	vector<vector<Particle*>> particles;
};

#pragma once

#include "ofMain.h"

#include "ofFbo.h"

#include "Particle.h"

class ofApp : public ofBaseApp {

public:

~ofApp();

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) {};

ofFbo fbo;

ofTrueTypeFont font;

vector<vector<Particle*>> particles;

};

#include "ofApp.h"

//--------------------------------------------------------------
ofApp::~ofApp() {
	for (int i = this->particles.size() - 1; i > -1; i--) {
		for (int j = this->particles[i].size() - 1; j > -1; j--) {
			delete this->particles[i][j];
			this->particles[i].erase(this->particles[i].begin() + j);
		}
	}
}

//--------------------------------------------------------------
void ofApp::setup() {
	ofSetFrameRate(30);
	ofBackground(0);
	ofSetWindowTitle("Insta");

	ofSetLineWidth(0.5);

	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 150, true, false, true);

	vector<string> words;
	words.push_back("CODE");
	words.push_back("+");
	words.push_back("LIFE");

	ofColor body_color;
	
	for (int word_index = 0; word_index < words.size(); word_index++) {
		ofVec2f word_size = ofVec2f(this->font.stringWidth(words[word_index]), -this->font.stringHeight(words[word_index]));

		vector<ofTTFCharacter> char_paths = this->font.getStringAsPoints(words[word_index]);
		vector<Particle*> tmp_particles;

		for (int path_index = 0; path_index < char_paths.size(); path_index++) {
			vector<ofPolyline> outline = char_paths[path_index].getOutline();
			body_color.setHsb(ofRandom(255), 255, 255);

			for (int outline_index = 0; outline_index < outline.size(); outline_index++) {
				outline[outline_index] = outline[outline_index].getResampledBySpacing(5);

				tmp_particles.clear();
				tmp_particles.shrink_to_fit();

				vector<ofPoint> vertices = outline[outline_index].getVertices();
				for (int vertices_index = 0; vertices_index < vertices.size(); vertices_index++) {
					ofVec2f location = vertices[vertices_index] - word_size / 2;
					location.y = location.y + 150 * (word_index - 1);
					tmp_particles.push_back(new Particle(location, body_color));
				}

				this->particles.push_back(tmp_particles);
			}
		}
	}

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

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

	this->fbo.begin();
	ofClear(0);
	ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

	ofVec2f mouse_point = ofVec2f(ofGetMouseX() - ofGetWidth() / 2, ofGetMouseY() - ofGetHeight() / 2);
	ofDrawCircle(mouse_point, 3);

	for (int i = 0; i < this->particles.size(); i++) {
		for (int j = 0; j < this->particles[i].size(); j++) {
			float distance = mouse_point.distance(this->particles[i][j]->get_location());

			if (distance < 50) {
				this->particles[i][j]->seek_r(mouse_point);
			}
			else {
				this->particles[i][j]->seek(this->particles[i][j]->get_start_location());
			}

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

	for (int i = 0; i < this->particles.size(); i++) {
		//ofBeginShape();
		for (int j = 0; j < this->particles[i].size(); j++) {
			this->particles[i][j]->draw();
			//ofVertex(this->particles[i][j]->get_location().x, this->particles[i][j]->get_location().y);
		}
		//ofEndShape(true);
	}

	this->fbo.end();
}

//--------------------------------------------------------------
void ofApp::draw() {
	this->fbo.draw(0, 0);
}

//--------------------------------------------------------------
int main() {
	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

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

ofApp::~ofApp() {

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

for (int j = this->particles[i].size() - 1; j > -1; j--) {

delete this->particles[i][j];

this->particles[i].erase(this->particles[i].begin() + j);

}

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

void ofApp::setup() {

ofSetFrameRate(30);

ofBackground(0);

ofSetWindowTitle("Insta");

ofSetLineWidth(0.5);

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 150, true, false, true);

vector<string> words;

words.push_back("CODE");

words.push_back("+");

words.push_back("LIFE");

ofColor body_color;

for (int word_index = 0; word_index < words.size(); word_index++) {

ofVec2f word_size = ofVec2f(this->font.stringWidth(words[word_index]), -this->font.stringHeight(words[word_index]));

vector<ofTTFCharacter> char_paths = this->font.getStringAsPoints(words[word_index]);

vector<Particle*> tmp_particles;

for (int path_index = 0; path_index < char_paths.size(); path_index++) {

vector<ofPolyline> outline = char_paths[path_index].getOutline();

body_color.setHsb(ofRandom(255), 255, 255);

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

outline[outline_index] = outline[outline_index].getResampledBySpacing(5);

tmp_particles.clear();

tmp_particles.shrink_to_fit();

vector<ofPoint> vertices = outline[outline_index].getVertices();

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

ofVec2f location = vertices[vertices_index] - word_size / 2;

location.y = location.y + 150 * (word_index - 1);

tmp_particles.push_back(new Particle(location, body_color));

}

this->particles.push_back(tmp_particles);

}

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

}

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

void ofApp::update() {

this->fbo.begin();

ofClear(0);

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

ofVec2f mouse_point = ofVec2f(ofGetMouseX() - ofGetWidth() / 2, ofGetMouseY() - ofGetHeight() / 2);

ofDrawCircle(mouse_point, 3);

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

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

float distance = mouse_point.distance(this->particles[i][j]->get_location());

if (distance < 50) {

this->particles[i][j]->seek_r(mouse_point);

}

else {

this->particles[i][j]->seek(this->particles[i][j]->get_start_location());

}

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

}

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

//ofBeginShape();

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

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

//ofVertex(this->particles[i][j]->get_location().x, this->particles[i][j]->get_location().y);

}

//ofEndShape(true);

}

this->fbo.end();

}

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

void ofApp::draw() {

this->fbo.draw(0, 0);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

class Particle {
public:
	Particle();
	Particle(ofVec3f location, ofColor body_color);
	~Particle();

	void apply_force(ofVec3f force);
	void seek(ofVec3f target);
	void seek_r(ofVec3f target);

	void update();
	void draw();

	ofVec3f get_location();
	ofVec3f get_start_location();

private:
	float size;
	ofVec3f location;
	ofVec3f start_location;
	ofVec3f velocity;
	ofVec3f acceleration;
	float max_force;
	float max_speed;
	float radius;
	ofColor body_color;
};

#pragma once

#include "ofMain.h"

class Particle {

public:

Particle();

Particle(ofVec3f location, ofColor body_color);

~Particle();

void apply_force(ofVec3f force);

void seek(ofVec3f target);

void seek_r(ofVec3f target);

void update();

void draw();

ofVec3f get_location();

ofVec3f get_start_location();

private:

float size;

ofVec3f location;

ofVec3f start_location;

ofVec3f velocity;

ofVec3f acceleration;

float max_force;

float max_speed;

float radius;

ofColor body_color;

};

#include "Particle.h"

Particle::Particle() : Particle(ofVec3f(0, 0, 0), ofColor(255)) {

}

Particle::Particle(ofVec3f location, ofColor body_color) {
	this->location = location;
	this->start_location = location;
	this->velocity = ofVec3f();
	this->acceleration = ofVec3f();

	this->size = 5;
	this->body_color = body_color;

	this->radius = radius;
	this->max_force = 10;
	this->max_speed = 300;
	this->radius = 5;
}

Particle::~Particle() {

}

void Particle::apply_force(ofVec3f force)
{
	this->acceleration += force;
}

void Particle::seek(ofVec3f target)
{
	ofVec3f desired = target - this->location;
	float distance = desired.length();
	desired.normalize();
	if (distance < this->radius)
	{
		if (distance < 1) {
			this->location = this->start_location;
			return;
		}
		else {
			distance *= ofMap(distance, 0, this->radius, 0, this->max_speed);
		}
	}
	else {
		distance *= max_speed;
	}

	ofVec3f steer = desired - this->velocity;
	steer.limit(this->max_force);
	apply_force(steer);
}

void Particle::seek_r(ofVec3f target)
{
	ofVec3f desired = target - this->location;
	desired.normalize();
	desired *= this->max_speed * 0.5;
	ofVec3f steer = desired - this->velocity;
	steer.limit(this->max_force * 0.5);
	steer *= -1;
	apply_force(steer);
}

void Particle::update() {
	this->velocity += this->acceleration;
	this->velocity.limit(this->max_speed);
	this->location += this->velocity;
	this->acceleration *= 0;
	this->velocity *= 0.98;
}

void Particle::draw() {
	ofSetColor(this->body_color);
	ofDrawCircle(this->location, this->size);
}

ofVec3f Particle::get_location() { return this->location; }
ofVec3f Particle::get_start_location() { return this->start_location; }

#include "Particle.h"

Particle::Particle() : Particle(ofVec3f(0, 0, 0), ofColor(255)) {

}

Particle::Particle(ofVec3f location, ofColor body_color) {

this->location = location;

this->start_location = location;

this->velocity = ofVec3f();

this->acceleration = ofVec3f();

this->size = 5;

this->body_color = body_color;

this->radius = radius;

this->max_force = 10;

this->max_speed = 300;

this->radius = 5;

}

Particle::~Particle() {

}

void Particle::apply_force(ofVec3f force)

{

this->acceleration += force;

}

void Particle::seek(ofVec3f target)

{

ofVec3f desired = target - this->location;

float distance = desired.length();

desired.normalize();

if (distance < this->radius)

{

if (distance < 1) {

this->location = this->start_location;

return;

}

else {

distance *= ofMap(distance, 0, this->radius, 0, this->max_speed);

}

else {

distance *= max_speed;

}

ofVec3f steer = desired - this->velocity;

steer.limit(this->max_force);

apply_force(steer);

}

void Particle::seek_r(ofVec3f target)

{

ofVec3f desired = target - this->location;

desired.normalize();

desired *= this->max_speed * 0.5;

ofVec3f steer = desired - this->velocity;

steer.limit(this->max_force * 0.5);

steer *= -1;

apply_force(steer);

}

void Particle::update() {

this->velocity += this->acceleration;

this->velocity.limit(this->max_speed);

this->location += this->velocity;

this->acceleration *= 0;

this->velocity *= 0.98;

}

void Particle::draw() {

ofSetColor(this->body_color);

ofDrawCircle(this->location, this->size);

}

ofVec3f Particle::get_location() { return this->location; }

ofVec3f Particle::get_start_location() { return this->start_location; }

[ Link ]
https://github.com/junkiyoshi/Insta20180103

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