ofxBullet – ページ 3 – プログラミング de 落描き

2018年1月18日2018年1月17日

初期位置に戻るBoxと吸引するSphere openFrameworks ofxBullet

[ Video ]

[ About ]
初期位置に戻ろうとするBoxと吸引力をもつSphereを配置しました。昨日の落書きの改造版です。

SphereがBoxを引き付ける力は強いので、Boxは近づいてきたSphereに絡めとられてしまいますが、初期位置との距離が離れれば離れる程、Boxが戻ろうとする力が強くなるので、離れすぎたBoxはSphereから離脱するのが出てきます。

反発・吸引共に面白いので、次はこれをLeap Motionで操る事をしたいですね。

[ 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) {};

	ofEasyCam cam;
	ofLight light;

	ofxBulletWorldRigid world;
	vector<ofxBulletBox*> boxes;
	vector<ofColor> bxes_color;
	vector<ofVec3f> boxes_location;

	ofVec3f hater_location;
};

#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) {};

ofEasyCam cam;

ofLight light;

ofxBulletWorldRigid world;

vector<ofxBulletBox*> boxes;

vector<ofColor> bxes_color;

vector<ofVec3f> boxes_location;

ofVec3f hater_location;

};

#include "ofApp.h"

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

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

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

	float size = 15;

	for (float x = -100; x < 100; x += size) {
		for (float y = -100; y < 100; y += size) {
			for (float z = -100; z < 100; z += size) {
				ofxBulletBox* box = new ofxBulletBox();
				box->create(this->world.world, ofVec3f(x, y, z), 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->bxes_color.push_back(color);
				this->boxes_location.push_back(ofVec3f(x, y, z));
			}
		}
	}

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

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

	ofVec3f diff;
	for (int i = 0; i < this->boxes.size(); i++) {
		diff = this->boxes_location[i] - this->boxes[i]->getPosition();
		diff *= 20;
		this->boxes[i]->applyCentralForce(diff);
	}

	float x = ofMap(ofNoise(ofGetFrameNum() * 0.01), 0, 1, -1000, 1000);
	float y = ofMap(ofNoise((ofGetFrameNum() + 100) * 0.01), 0, 1, -1000, 1000);
	float z = ofMap(ofNoise((ofGetFrameNum() + 200) * 0.01), 0, 1, -1000, 1000);

	this->hater_location = ofVec3f(x, y, z);
	for (int i = 0; i < this->boxes.size(); i++) {
		diff = this->boxes[i]->getPosition() - this->hater_location;
		if (diff.length() < 150) {
			diff *= ofMap(diff.length(), 0, 150, -300, 10);
			this->boxes[i]->applyCentralForce(diff);
		}
	}

	this->world.update();
}

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

	this->cam.begin();

	for (int i = 0; i < this->boxes.size(); i++) {
		ofSetColor(this->bxes_color[i]);
		this->boxes[i]->draw();
		//ofDrawLine(this->boxes[i]->getPosition(), this->boxes_location[i]);
	}

	ofSetColor(200);
	ofDrawSphere(this->hater_location, 30);

	this->cam.end();
}

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

#include "ofApp.h"

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

ofApp::~ofApp() {

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

delete tmp;

}

this->boxes.clear();

}

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

void ofApp::setup() {

ofSetFrameRate(60);

ofEnableDepthTest();

ofBackground(0);

ofSetWindowTitle("Insta");

this->world.setup();

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

float size = 15;

for (float x = -100; x < 100; x += size) {

for (float y = -100; y < 100; y += size) {

for (float z = -100; z < 100; z += size) {

ofxBulletBox* box = new ofxBulletBox();

box->create(this->world.world, ofVec3f(x, y, z), 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->bxes_color.push_back(color);

this->boxes_location.push_back(ofVec3f(x, y, z));

}

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

ofEnableLighting();

this->light.enable();

}

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

void ofApp::update() {

ofVec3f diff;

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

diff = this->boxes_location[i] - this->boxes[i]->getPosition();

diff *= 20;

this->boxes[i]->applyCentralForce(diff);

}

float x = ofMap(ofNoise(ofGetFrameNum() * 0.01), 0, 1, -1000, 1000);

float y = ofMap(ofNoise((ofGetFrameNum() + 100) * 0.01), 0, 1, -1000, 1000);

float z = ofMap(ofNoise((ofGetFrameNum() + 200) * 0.01), 0, 1, -1000, 1000);

this->hater_location = ofVec3f(x, y, z);

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

diff = this->boxes[i]->getPosition() - this->hater_location;

if (diff.length() < 150) {

diff *= ofMap(diff.length(), 0, 150, -300, 10);

this->boxes[i]->applyCentralForce(diff);

}

this->world.update();

}

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

void ofApp::draw() {

this->cam.begin();

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

ofSetColor(this->bxes_color[i]);

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

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

}

ofSetColor(200);

ofDrawSphere(this->hater_location, 30);

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180117

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2018年1月17日2018年1月16日

初期位置に戻るBoxと反発するSphere openFrameworks ofxBullet

[ Video ]

[ About ]
初期の位置に戻ろうとするBoxと反発力があるSphereを配置。

縦・横・奥で19*19*19=6,859個のBoxがあります。(20*20*20のつもりがループ条件をミスしてますね)。Boxはクルクルと個々の動きが分かりやすくて良いですね。

手元のマシンではリアルタイムは厳しかったので、画像ファイルをフレームごとに書き出して、後でOpenCVを使って動画にエンコードしました。この辺りも興味ある方おりましたら、blog書きますのでInstagram / Twitter等でメッセージ下さい。

[ 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) {};

	ofEasyCam cam;
	ofLight light;

	ofxBulletWorldRigid world;
	vector<ofxBulletBox*> boxes;
	vector<ofColor> bxes_color;
	vector<ofVec3f> boxes_location;

	ofVec3f hater_location;
};

#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) {};

ofEasyCam cam;

ofLight light;

ofxBulletWorldRigid world;

vector<ofxBulletBox*> boxes;

vector<ofColor> bxes_color;

vector<ofVec3f> boxes_location;

ofVec3f hater_location;

};

#include "ofApp.h"

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

//--------------------------------------------------------------
void ofApp::setup() {
	ofSetFrameRate(60);
	ofEnableDepthTest();
	ofBackground(255);
	ofSetWindowTitle("Insta");

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

	float size = 15;

	for (float x = -150; x < 150; x += size) {
		for (float y = -150; y < 150; y += size) {
			for (float z = -150; z < 150; z += size) {
				ofxBulletBox* box = new ofxBulletBox();
				box->create(this->world.world, ofVec3f(x, y, z), 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->bxes_color.push_back(color);
				this->boxes_location.push_back(ofVec3f(x, y, z));
			}
		}
	}

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

//--------------------------------------------------------------
void ofApp::update() {
	ofVec3f diff;
	for (int i = 0; i < this->boxes.size(); i++) {
		diff = this->boxes_location[i] - this->boxes[i]->getPosition();
		diff *= 10;
		this->boxes[i]->applyCentralForce(diff);
	}

	float x = ofMap(ofNoise(ofGetFrameNum() * 0.01), 0, 1, -500, 500);
	float y = ofMap(ofNoise((ofGetFrameNum() + 100) * 0.01), 0, 1, -500, 500);
	float z = ofMap(ofNoise((ofGetFrameNum() + 200) * 0.01), 0, 1, -500, 500);

	this->hater_location = ofVec3f(x, y, z);
	for (int i = 0; i < this->boxes.size(); i++) {
		diff = this->boxes[i]->getPosition() - this->hater_location;
		if (diff.length() < 150) {
			diff *= ofMap(diff.length(), 0, 150, 100, 0);
			this->boxes[i]->applyCentralForce(diff);
		}
	}

	this->world.update();
}

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

	this->cam.begin();

	float len = 50;
	for (int i = 0; i < this->boxes.size(); i++) {
		ofSetColor(this->bxes_color[i]);
		this->boxes[i]->draw();
		//ofDrawLine(this->boxes[i]->getPosition(), this->boxes_location[i]);
	}

	ofSetColor(0);
	ofDrawSphere(this->hater_location, 50);

	this->cam.end();
}

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

#include "ofApp.h"

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

ofApp::~ofApp() {

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

delete tmp;

}

this->boxes.clear();

}

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

void ofApp::setup() {

ofSetFrameRate(60);

ofEnableDepthTest();

ofBackground(255);

ofSetWindowTitle("Insta");

this->world.setup();

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

float size = 15;

for (float x = -150; x < 150; x += size) {

for (float y = -150; y < 150; y += size) {

for (float z = -150; z < 150; z += size) {

ofxBulletBox* box = new ofxBulletBox();

box->create(this->world.world, ofVec3f(x, y, z), 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->bxes_color.push_back(color);

this->boxes_location.push_back(ofVec3f(x, y, z));

}

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

ofEnableLighting();

this->light.enable();

}

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

void ofApp::update() {

ofVec3f diff;

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

diff = this->boxes_location[i] - this->boxes[i]->getPosition();

diff *= 10;

this->boxes[i]->applyCentralForce(diff);

}

float x = ofMap(ofNoise(ofGetFrameNum() * 0.01), 0, 1, -500, 500);

float y = ofMap(ofNoise((ofGetFrameNum() + 100) * 0.01), 0, 1, -500, 500);

float z = ofMap(ofNoise((ofGetFrameNum() + 200) * 0.01), 0, 1, -500, 500);

this->hater_location = ofVec3f(x, y, z);

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

diff = this->boxes[i]->getPosition() - this->hater_location;

if (diff.length() < 150) {

diff *= ofMap(diff.length(), 0, 150, 100, 0);

this->boxes[i]->applyCentralForce(diff);

}

this->world.update();

}

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

void ofApp::draw() {

this->cam.begin();

float len = 50;

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

ofSetColor(this->bxes_color[i]);

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

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

}

ofSetColor(0);

ofDrawSphere(this->hater_location, 50);

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180116

WebCamのimageにmask https://t.co/7MHcqDiX0N #openframeworks pic.twitter.com/q16RdGJx6L

— junkiyoshi (@junkiyoshi) 2018年1月6日

→ https://junkiyoshi.com/insta20180106/

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2018年1月16日2018年1月16日

LeapMotionから取得した指の座標から逃げるSphere ofxBullet openFrameworks

[ Video ]

[ About ]
ofTrueTypeFontから文字の輪郭の座標を取得して、Sphereを設置しています。

それぞれのSphereは初期位置に戻ろうとする力が常に働いていますが、LeapMotionから取得した人差指の座標にはSphereに反発する力があり、反発する力の有効範囲に入ったSphereは初期位置からずれてしまいます。反発力の有効範囲外になれば元に戻ろうとする力だけになるので、初期位置に戻ります。

Leap Motion + ofxBulletなので、もう少し3Dが分かるようにしたかったのですが、あまり上手くいきませんでしたね。

[ Source ]

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

// Leap Motion SDK
#include "Leap.h"
#pragma comment(lib, "Leap.lib")

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;

	ofTrueTypeFont font;

	ofxBulletWorldRigid world;
	vector<ofxBulletSphere*> spheres;
	vector<ofColor> spheres_color;
	vector<ofVec3f> spheres_location;

	// Leap Motion
	Leap::Controller leap;
	ofVec3f finger_position;
};

#pragma once

#include "ofMain.h"

#include "ofxBullet.h"

// Leap Motion SDK

#include "Leap.h"

#pragma comment(lib, "Leap.lib")

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;

ofTrueTypeFont font;

ofxBulletWorldRigid world;

vector<ofxBulletSphere*> spheres;

vector<ofColor> spheres_color;

vector<ofVec3f> spheres_location;

// Leap Motion

Leap::Controller leap;

ofVec3f finger_position;

};

#include "ofApp.h"

//--------------------------------------------------------------
ofApp::~ofApp() {
	for (ofxBulletSphere* tmp : this->spheres) {
		delete tmp;
	}
	this->spheres.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, 0.0, 0.0));

	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 130, true, false, true);
	vector<string> words;
	words.push_back("JUN");
	words.push_back("KIYOSHI");
	
	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]);
		for (int path_index = 0; path_index < char_paths.size(); path_index++) {
			vector<ofPolyline> outline = char_paths[path_index].getOutline();
			for (int outline_index = 0; outline_index < outline.size(); outline_index++) {
				outline[outline_index] = outline[outline_index].getResampledBySpacing(5);
				vector<ofPoint> vertices = outline[outline_index].getVertices();
				for (int vertices_index = 0; vertices_index < vertices.size(); vertices_index++) {
					ofVec3f location = vertices[vertices_index] - word_size / 2;
					location.y = location.y + 150 * (word_index - 1);

					ofxBulletSphere* sphere = new ofxBulletSphere();
					ofVec3f box_location = ofVec3f(location.x, location.y, location.z);
					float size = 2.5;
					sphere->create(this->world.world, box_location, 1.0, size);
					sphere->setRestitution(1.0);
					sphere->add();

					this->spheres.push_back(sphere);

					ofColor color;
					color.setHsb(ofRandom(255), 255, 255);
					this->spheres_color.push_back(color);
					this->spheres_location.push_back(box_location);
				}
			}
		}
	}
}

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

	ofVec3f diff;
	for (int i = 0; i < this->spheres.size(); i++) {
		diff = this->spheres_location[i] - this->spheres[i]->getPosition();
		diff *= 10;
		this->spheres[i]->applyCentralForce(diff);
	}

	Leap::Frame frame = this->leap.frame();
	for (Leap::Hand hand : frame.hands()) {
		if(hand.isRight()){
			for (Leap::Finger finger : hand.fingers()) {
				if (finger.type() == Leap::Finger::Type::TYPE_INDEX) {
					float x = ofMap(finger.tipPosition().x, -200, 200, -ofGetWidth() / 2, ofGetWidth() / 2);
					float y = ofMap(finger.tipPosition().y, 300, 0, -ofGetHeight() / 2, ofGetHeight() / 2);
					float power = finger.tipPosition().z * -1;
					this->finger_position = ofVec3f(x, y, 0);

					ofVec3f diff;
					for (int i = 0; i < this->spheres.size(); i++) {
						diff = this->finger_position - this->spheres[i]->getPosition();
						if (diff.length() < power) {
							diff *= 5;
							this->spheres[i]->applyCentralForce(-diff);
						}
					}
				}
			}
		}
	}

	this->world.update();
}

//--------------------------------------------------------------
void ofApp::draw() {
	ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);
	
	ofDrawBox(this->finger_position, 5);

	float len = 50;
	for (int i = 0; i < this->spheres.size(); i++) {
		ofSetColor(this->spheres_color[i]);
		this->spheres[i]->draw();
		ofDrawLine(this->spheres[i]->getPosition(), this->spheres_location[i]);
	}
}

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

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#include "ofApp.h"

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

ofApp::~ofApp() {

for (ofxBulletSphere* tmp : this->spheres) {

delete tmp;

}

this->spheres.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, 0.0, 0.0));

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 130, true, false, true);

vector<string> words;

words.push_back("JUN");

words.push_back("KIYOSHI");

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]);

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

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

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

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

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

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

ofVec3f location = vertices[vertices_index] - word_size / 2;

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

ofxBulletSphere* sphere = new ofxBulletSphere();

ofVec3f box_location = ofVec3f(location.x, location.y, location.z);

float size = 2.5;

sphere->create(this->world.world, box_location, 1.0, size);

sphere->setRestitution(1.0);

sphere->add();

this->spheres.push_back(sphere);

ofColor color;

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

this->spheres_color.push_back(color);

this->spheres_location.push_back(box_location);

}

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

void ofApp::update() {

ofVec3f diff;

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

diff = this->spheres_location[i] - this->spheres[i]->getPosition();

diff *= 10;

this->spheres[i]->applyCentralForce(diff);

}

Leap::Frame frame = this->leap.frame();

for (Leap::Hand hand : frame.hands()) {

if(hand.isRight()){

for (Leap::Finger finger : hand.fingers()) {

if (finger.type() == Leap::Finger::Type::TYPE_INDEX) {

float x = ofMap(finger.tipPosition().x, -200, 200, -ofGetWidth() / 2, ofGetWidth() / 2);

float y = ofMap(finger.tipPosition().y, 300, 0, -ofGetHeight() / 2, ofGetHeight() / 2);

float power = finger.tipPosition().z * -1;

this->finger_position = ofVec3f(x, y, 0);

ofVec3f diff;

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

diff = this->finger_position - this->spheres[i]->getPosition();

if (diff.length() < power) {

diff *= 5;

this->spheres[i]->applyCentralForce(-diff);

}

this->world.update();

}

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

void ofApp::draw() {

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

ofDrawBox(this->finger_position, 5);

float len = 50;

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

ofSetColor(this->spheres_color[i]);

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

ofDrawLine(this->spheres[i]->getPosition(), this->spheres_location[i]);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180115

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