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昨日のやつをLeap Motionで操作してみました。
Leap::HandクラスのgrabStrengthメソッドを使うと、手の握り具合(0.0-1.0)が取得できます。今回は手を握っている(0.5以上)状態の場合に、手の加速度を使って、中央の大きなBoxを動かすように指定しました。
この関数が返す値は、極端に0.0または1.0に寄るので、微妙な握り加減は調整出来ません。もし、そのような加減が知りたければ、似たような関数にpinchStrengthメソッドというピンチ(親指と人差指の関係 0.0-1.0)を取得する関数や、pinchDistanceという距離を返してくれるメソッドがあるので、そちらを使うと良いかと思います。
前にもofxBulletを使ってLeap Motion + 3D 物理演算を作ったことありますが、やっぱり楽しいですね。コーディングと結果で遊べる、2回美味しいやつです。
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#pragma once #include "ofMain.h" #include "ofxBullet.h" // Leap Motion SDK #include "Leap.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; // Leap Motion Leap::Controller leap; }; |
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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() { bool flg = true; ofSetColor(255); Leap::Frame frame = this->leap.frame(); for (Leap::Hand hand : frame.hands()) { if (hand.grabStrength() > 0.5) { ofSetColor(255, 255, 0); ofVec3f diff = ofVec3f(hand.palmVelocity().x, -hand.palmVelocity().y, hand.palmVelocity().z); diff *= 50.f; boundsShape->applyCentralForce(diff); } } 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(); 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()); } |