diff --git a/ofxQuadTreeExample/src/ofApp.cpp b/ofxQuadTreeExample/src/ofApp.cpp
new file mode 100644
index 0000000..ffdf1d9
--- /dev/null
+++ b/ofxQuadTreeExample/src/ofApp.cpp
@@ -0,0 +1,61 @@
+#include "ofApp.h"
+
+void ofApp::setup() {
+    bWire = true;
+    bPlane = false;
+    bOriginal = false;
+    grabber.initGrabber(1280, 720);
+    tree.setup();
+    level = 7;
+}
+
+void ofApp::update() {
+    grabber.update();
+    if(grabber.isFrameNew()) {
+        tree.setTexture(grabber.getTexture(), level);
+    }
+}
+
+void ofApp::draw() {
+    ofBackground(ofColor::black);
+    if(bOriginal) {
+        ofSetColor(ofColor::white);
+        grabber.draw(0, 0);
+    }
+    if(bPlane) {
+        tree.draw();
+    }
+    if(bWire) {
+        tree.drawWire(ofColor::white);
+    }
+    
+    ofSetColor(ofColor::red);
+    ofDrawBitmapString(string("threashold : ") + ofToString(tree.getThreashold()), 40, 40);
+    ofDrawBitmapString(string("split level : ") + ofToString(level), 40, 60);
+}
+
+void ofApp::keyPressed(int key) {
+    switch(key){
+        case 'w':
+            bWire ^= true;
+            break;
+        case 'p':
+            bPlane ^= true;
+            break;
+        case 't':
+            bOriginal ^= true;
+            break;
+        case OF_KEY_LEFT:
+            level = max(1, level -1);
+            break;
+        case OF_KEY_RIGHT:
+            level = min(10, level + 1);
+            break;
+        case OF_KEY_UP:
+            tree.setThreashold(max(tree.getThreashold() - 0.1f, 4.0f));
+            break;
+        case OF_KEY_DOWN:
+            tree.setThreashold(min(tree.getThreashold() + 0.1f, 64.0f));
+            break;
+    }
+}
diff --git a/ofxQuadTreeExample/src/ofApp.h b/ofxQuadTreeExample/src/ofApp.h
index 691f4ad..9c1e84c 100644
--- a/ofxQuadTreeExample/src/ofApp.h
+++ b/ofxQuadTreeExample/src/ofApp.h
@@ -5,61 +5,11 @@
 
 class ofApp : public ofBaseApp{
 public:
-    void setup() {
-        bWire = true;
-        bPlane = false;
-        bOriginal = false;
-        grabber.initGrabber(1280, 720);
-        tree.setup();
-        level = 7;
-    }
-    void update() {
-        grabber.update();
-        if(grabber.isFrameNew()) {
-            tree.setTexture(grabber.getTextureReference(), level);
-        }
-    }
-    void draw() {
-        ofBackground(ofColor::black);
-        if(bOriginal) {
-            ofSetColor(ofColor::white);
-            grabber.draw(0, 0);
-        }
-        if(bPlane) {
-            tree.draw();
-        }
-        if(bWire) {
-            tree.drawWire(ofColor::white);
-        }
-        
-        ofSetColor(ofColor::red);
-        ofDrawBitmapString(string("threashold : ") + ofToString(tree.getThreashold()), 40, 40);
-        ofDrawBitmapString(string("split level : ") + ofToString(level), 40, 60);
-    }
+    void setup();
+    void update();
+    void draw();
     
-    void keyPressed(int key) {
-        if(key == 'w') {
-            bWire ^= true;
-        }
-        if(key == 'p') {
-            bPlane ^= true;
-        }
-        if(key == 't') {
-            bOriginal ^= true;
-        }
-        if(key == OF_KEY_LEFT) {
-            level = max(1, level -1);
-        }
-        if(key == OF_KEY_RIGHT) {
-            level = min(10, level + 1);
-        }
-        if(key == OF_KEY_UP) {
-            tree.setThreashold(max(tree.getThreashold() - 0.1f, 4.0f));
-        }
-        if(key == OF_KEY_DOWN) {
-            tree.setThreashold(min(tree.getThreashold() + 0.1f, 64.0f));
-        }
-    }
+    void keyPressed(int key);
     
 private:
     ofVideoGrabber grabber;