diff --git a/camera.cpp b/camera.cpp
index 53b6f97..683e908 100644
--- a/camera.cpp
+++ b/camera.cpp
@@ -38,6 +38,12 @@ void Camera::translate(glm::vec3 vector)
     m_position += vector;
 }
 
+void Camera::relativeTranslate(glm::vec3 vector)
+{
+    m_viewHasChanged = true;
+    m_position += vector * glm::mat3(m_viewMatrix);
+}
+
 void Camera::rotate(glm::vec2 rad_vector)
 {
     m_viewHasChanged = true;
@@ -81,6 +87,7 @@ void Camera::moveTo(glm::vec3 position)
 
 void Camera::lookAt(glm::vec3 position)
 {
+    // TODO : fix this method
     m_viewHasChanged = true;
     glm::vec3 delta = position - m_position;
     glm::normalize(delta);
@@ -107,3 +114,13 @@ glm::mat4 Camera::getViewMatrix()
         computeViewMatrix();
     return m_viewMatrix;
 }
+
+glm::vec2 Camera::getRotation()
+{
+    return m_rotation;
+}
+
+glm::vec3 Camera::getPosition()
+{
+    return m_position;
+}
diff --git a/camera.h b/camera.h
index 3f4da85..0be22fa 100644
--- a/camera.h
+++ b/camera.h
@@ -28,6 +28,7 @@ public:
     // setters
     // relative:
     void translate(glm::vec3 vector);
+    void relativeTranslate(glm::vec3 vector);
     void rotate(glm::vec2 rad_vector);
     // absolute:
     void zoom(float new_fov_y);
@@ -41,6 +42,9 @@ public:
     // getters
     glm::mat4 getProjectionMatrix();
     glm::mat4 getViewMatrix();
+
+    glm::vec2 getRotation();
+    glm::vec3 getPosition();
 };
 
 #endif // CAMERA_H
diff --git a/entity.cpp b/entity.cpp
index bcb99ce..3b22569 100644
--- a/entity.cpp
+++ b/entity.cpp
@@ -8,10 +8,12 @@ void Entity::draw(const glm::mat4 viewMatrix, const glm::mat4 projectionMatrix)
 {
     glm::mat4 modelViewMatrix = viewMatrix * modelMatrix;
     glm::mat4 mvp = projectionMatrix * modelViewMatrix;
+    glm::mat4 normalMatrix = glm::transpose(glm::inverse(modelViewMatrix));
     mat->bindAttributes();
     Shader* shader = mat->getShader();
     shader->bindMatrix(shader->getLocation("viewMatrix"), viewMatrix);
     shader->bindMatrix(shader->getLocation("modelViewMatrix"), modelViewMatrix);
+    shader->bindMatrix(shader->getLocation("normalMatrix"), normalMatrix);
     shader->bindMatrix(shader->getLocation("MVP"), mvp);
     mesh->draw();
 }
@@ -20,3 +22,8 @@ Shader* Entity::getShader()
 {
     return mat->getShader();
 }
+
+Material* Entity::getMaterial()
+{
+    return mat;
+}
diff --git a/entity.h b/entity.h
index b975676..3f00e1c 100644
--- a/entity.h
+++ b/entity.h
@@ -18,6 +18,7 @@ public:
     Entity(Entity* myParent, Mesh* myMesh, Material* myMat) : parent(myParent), mesh(myMesh), mat(myMat) {}
     virtual void draw(const glm::mat4 viewMatrix, const glm::mat4 projectionMatrix);
     Shader* getShader();
+    Material* getMaterial();
 };
 
 #endif // ENTITY_H
diff --git a/focuscontroller.cpp b/focuscontroller.cpp
new file mode 100644
index 0000000..27c983c
--- /dev/null
+++ b/focuscontroller.cpp
@@ -0,0 +1,50 @@
+#include "focuscontroller.h"
+#include "camera.h"
+#include <glm/ext.hpp>
+
+void FocusController::setFocus(glm::vec3* object)
+{
+    track = object;
+    dist = glm::distance2(*track, camera->getPosition());
+}
+
+void FocusController::mouseMove(int dx, int dy)
+{
+    bool needUpdate = false;
+
+    if(dist < 0)
+        dist = glm::distance2(*track, camera->getPosition());
+
+    if(grabbed & 1)
+    {
+        camera->rotate(glm::vec2(dx*0.01f, dy*0.01f));
+        needUpdate = true;
+    }
+
+    if(grabbed & 4)
+    {
+        dist += dy*0.02f;
+        needUpdate = true;
+    }
+
+    if(needUpdate)
+        updateCamera();
+}
+
+void FocusController::mouseWheelEvent(int scrollCount)
+{
+    if(dist < 0)
+        dist = glm::distance2(*track, camera->getPosition());
+
+    dist += scrollCount/600.0f;
+    updateCamera();
+}
+
+void FocusController::updateCamera()
+{
+    glm::vec2 rot = camera->getRotation();
+    glm::vec3 pos = glm::vec3(std::sin(-rot.x)*std::cos(rot.y),
+                    std::sin(rot.y),
+                    std::cos(-rot.x)*std::cos(rot.y));
+    camera->moveTo(*track + dist*pos);
+}
diff --git a/focuscontroller.h b/focuscontroller.h
new file mode 100644
index 0000000..ce1432f
--- /dev/null
+++ b/focuscontroller.h
@@ -0,0 +1,23 @@
+#ifndef FOCUSCONTROLLER_H
+#define FOCUSCONTROLLER_H
+
+#include "scenecontroller.h"
+#include <glm/fwd.hpp>
+
+class FocusController : public SceneController
+{
+    glm::vec3* track;
+    float dist;
+
+    void updateCamera();
+
+public:
+    FocusController(glm::vec3* object) : track(object), dist(-1) {}
+
+    void setFocus(glm::vec3* object);
+
+    virtual void mouseMove(int dx, int dy);
+    virtual void mouseWheelEvent(int scrollCount);
+};
+
+#endif // FOCUSCONTROLLER_H
diff --git a/lights.cpp b/lights.cpp
index d4455ce..c7d004e 100644
--- a/lights.cpp
+++ b/lights.cpp
@@ -3,12 +3,17 @@
 
 void Lights::addLight(const glm::vec3 &myPosition, const glm::vec3 myColor)
 {
-    Light l;
-    l.position = myPosition;
-    l.color = myColor;
+    if(lights.size() < MAX_LIGHTS)
+    {
+        Light l;
+        l.position = myPosition;
+        l.color = myColor;
+        lights.push_back(l);
+    }
 }
 
 void Lights::bind(GLuint location, Shader* shader)
 {
-    //shader->bindVec3Array(location, (glm::vec3*)lights.data(), lights.size()*2);
+    if(lights.size() > 0)
+        shader->bindVec3Array(location, (glm::vec3*)lights.data(), lights.size()*2);
 }
diff --git a/lights.h b/lights.h
index 0db31b4..cd266c8 100644
--- a/lights.h
+++ b/lights.h
@@ -5,6 +5,8 @@
 #include <glew/glew.h>
 #include <vector>
 
+#define MAX_LIGHTS 16
+
 class Shader;
 
 class Lights
diff --git a/mainwindow.ui b/mainwindow.ui
index 27185b2..c8d03fd 100644
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>483</width>
-    <height>369</height>
+    <width>757</width>
+    <height>492</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -40,45 +40,11 @@
     <rect>
      <x>0</x>
      <y>0</y>
-     <width>483</width>
-     <height>20</height>
+     <width>757</width>
+     <height>21</height>
     </rect>
    </property>
   </widget>
-  <widget class="QDockWidget" name="dockWidget_4">
-   <property name="floating">
-    <bool>false</bool>
-   </property>
-   <attribute name="dockWidgetArea">
-    <number>1</number>
-   </attribute>
-   <widget class="QWidget" name="dockWidgetContents_4">
-    <layout class="QHBoxLayout" name="horizontalLayout_2">
-     <property name="spacing">
-      <number>0</number>
-     </property>
-     <property name="leftMargin">
-      <number>0</number>
-     </property>
-     <property name="topMargin">
-      <number>0</number>
-     </property>
-     <property name="rightMargin">
-      <number>0</number>
-     </property>
-     <property name="bottomMargin">
-      <number>0</number>
-     </property>
-     <item>
-      <widget class="QGroupBox" name="groupBox">
-       <property name="title">
-        <string>renderer</string>
-       </property>
-      </widget>
-     </item>
-    </layout>
-   </widget>
-  </widget>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <customwidgets>
diff --git a/material.h b/material.h
index f4fd630..7aea868 100644
--- a/material.h
+++ b/material.h
@@ -10,7 +10,8 @@ public:
 	Material(Shader* myShader) : shader(myShader) {}
 	Shader* getShader() {return shader;}
 
-	virtual void bindAttributes() = 0;
+    virtual void bindAttributes() = 0;
+    virtual bool requireLights() {return true;}
 
 protected:
 	Shader* shader;
diff --git a/myglwidget.cpp b/myglwidget.cpp
index 6f6edbc..f192864 100644
--- a/myglwidget.cpp
+++ b/myglwidget.cpp
@@ -9,6 +9,7 @@
 #include "utils.h"
 #include "texture.h"
 #include "sparrowrenderer.h"
+#include "focuscontroller.h"
 #include <iostream>
 #include <glm/glm.hpp>
 #include <QKeyEvent>
@@ -16,13 +17,16 @@
 
 MyGLWidget::MyGLWidget(QWidget *parent) :
     QGLWidget(parent),
-    renderer(NULL)
+    renderer(NULL),
+    controller(NULL)
 {}
 
 MyGLWidget::~MyGLWidget()
 {
     if(renderer != NULL)
         delete(renderer);
+    if(controller != NULL)
+        delete(controller);
 }
 
 Scene* MyGLWidget::buildScene()
@@ -48,12 +52,14 @@ Scene* MyGLWidget::buildScene()
     std::string vertSource = Utils::fileToString("../phong.vert");
     std::string fragSource = Utils::fileToString("../phong.frag");
     Shader* shader = new Shader(vertSource, fragSource);
-    PhongMaterial* mat = new PhongMaterial(shader);
+    PhongMaterial* mat = new PhongMaterial(shader, glm::vec3(1), glm::vec3(1), 20.0f);
     Texture* tex = new Texture("../data/noise.png");
     mat->setTexture(tex);
 
     scene->addEntity(myGrid, mat);
 
+    scene->addDirectionnalLight(glm::vec3(2, 3, 4), glm::vec3(0.6f, 0.5f, 0.4f));
+
     return scene;
 }
 
@@ -62,8 +68,9 @@ void MyGLWidget::initializeGL()
     makeCurrent();
     renderer = new SparrowRenderer(width(), height());
     Scene* scene = buildScene();
+    controller = new FocusController(new glm::vec3(0));
     renderer->setScene(scene);
-    controller.setScene(scene);
+    controller->setScene(scene);
 }
 
 void MyGLWidget::resizeGL(int width, int height)
@@ -79,30 +86,36 @@ void MyGLWidget::paintGL()
 
 void MyGLWidget::mouseMoveEvent(QMouseEvent *e)
 {
-    controller.mouseMove(e->pos().x() - last.x(), e->pos().y() - last.y());
+    controller->mouseMove(e->pos().x() - last.x(), e->pos().y() - last.y());
     last = e->pos();
     updateGL();
 }
 
 void MyGLWidget::mousePressEvent(QMouseEvent* e)
 {
-    controller.mouseEvent(e->button(), true);
+    controller->mouseEvent(e->button(), true);
     last = e->pos();
     updateGL();
 }
 void MyGLWidget::mouseReleaseEvent(QMouseEvent* e)
 {
-    controller.mouseEvent(e->button(), false);
+    controller->mouseEvent(e->button(), false);
+    updateGL();
+}
+
+void MyGLWidget::wheelEvent(QWheelEvent *e)
+{
+    controller->mouseWheelEvent(e->delta());
     updateGL();
 }
 
 void MyGLWidget::keyPressEvent(QKeyEvent *e)
 {
-    controller.mouseEvent(e->key(), true);
+    controller->mouseEvent(e->key(), true);
     updateGL();
 }
 void MyGLWidget::keyReleaseEvent(QKeyEvent *e)
 {
-    controller.mouseEvent(e->key(), false);
+    controller->mouseEvent(e->key(), false);
     updateGL();
 }
diff --git a/myglwidget.h b/myglwidget.h
index cfe2afc..a0c1491 100644
--- a/myglwidget.h
+++ b/myglwidget.h
@@ -1,11 +1,11 @@
 #ifndef MYGLWIDGET_H
 #define MYGLWIDGET_H
 
-#include "scenecontroller.h"
 #include <QGLWidget>
 
 class Scene;
 class SparrowRenderer;
+class SceneController;
 
 namespace Ui {
 class MyGLWidget;
@@ -16,7 +16,7 @@ class MyGLWidget : public QGLWidget
     Q_OBJECT
 
     SparrowRenderer* renderer;
-	SceneController controller;
+    SceneController* controller;
     QPoint last;
 
 public:
@@ -34,6 +34,7 @@ private:
 	void mouseMoveEvent(QMouseEvent *e);
 	void mousePressEvent(QMouseEvent* e);
     void mouseReleaseEvent(QMouseEvent* e);
+    void wheelEvent(QWheelEvent *e);
     void keyPressEvent(QKeyEvent *e);
     void keyReleaseEvent(QKeyEvent *e);
 };
diff --git a/phong.frag b/phong.frag
index def8f16..f4c1ce3 100644
--- a/phong.frag
+++ b/phong.frag
@@ -5,6 +5,9 @@ uniform vec3 materialKd;
 uniform vec3 materialKs;
 uniform float materialNs;
 
+uniform vec3 dirLights[32];
+uniform vec3 pointLights[32];
+
 // texture
 uniform sampler2D baseTexture;
 
@@ -12,6 +15,9 @@ uniform sampler2D baseTexture;
 in vec3 varNormal;
 in vec2 varTexCoord;
 
+in vec3 lightDirInView[16];
+in vec3 halfVecInView[16];
+
 // resultat
 layout(location = 0)out vec4 outColor;
 
@@ -31,7 +37,8 @@ vec3 computeLight(in vec3 kd, in vec3 ks, in float ns, in vec3 color, in vec3 no
 
 void main(void) {
 	vec3 kd = vec3(texture2D(baseTexture, varTexCoord));
+	vec3 light = 0.1f*kd + computeLight(kd, materialKs, materialNs, dirLights[1], varNormal, lightDirInView[0], halfVecInView[0]);
 
-	outColor = vec4(kd, 1);
+	outColor = vec4(light, 1);
 }
 
diff --git a/phong.vert b/phong.vert
index f8e9f86..5d71eea 100644
--- a/phong.vert
+++ b/phong.vert
@@ -6,20 +6,28 @@ uniform mat4 MVP;
 uniform mat4 normalMatrix;
 uniform mat4 viewMatrix;
 
+uniform vec3 dirLights[32];
+uniform vec3 pointLights[32];
+
 layout(location = 0)in vec3 inPosition;
 layout(location = 1)in vec3 inNormal;
 layout(location = 2)in vec4 inTexCoord;
 
+out vec3 lightDirInView[16];
+out vec3 halfVecInView[16];
+
 out vec3 varNormal;
 out vec2 varTexCoord;
 
-/*void computeLightingVectorsInView(in vec3 posInView, in vec3 lightPosition, out vec3 lightDir, out vec3 halfVec){
+void computeLightingVectorsInView(in vec3 posInView, in vec3 lightPosition, out vec3 lightDir, out vec3 halfVec){
 	lightDir = vec3(viewMatrix*vec4(lightPosition, 1.0)) - posInView;
 	halfVec = normalize(lightDir - posInView);
 	lightDir = normalize(lightDir);
-}*/
+}
 
 void main(void) {
+	computeLightingVectorsInView(vec3(modelViewMatrix*vec4(inPosition, 1.0)), dirLights[0], lightDirInView[0], halfVecInView[0]);
+
         // normales corrigees (en fonction de la vue)
 	varNormal = normalize(vec3(normalMatrix*vec4(inNormal,0)));
 
diff --git a/scene.cpp b/scene.cpp
index 2a620d3..2831c86 100644
--- a/scene.cpp
+++ b/scene.cpp
@@ -5,6 +5,7 @@
 #include "camera.h"
 #include "entity.h"
 #include "shader.h"
+#include "material.h"
 
 // MAIN METHODS
 
@@ -22,8 +23,11 @@ void Scene::drawAll()
     {
         Shader* shader = e->getShader();
         shader->bind();
-        directionnalLights.bind(shader->getLocation("dirLights"), shader);
-        pointLights.bind(shader->getLocation("pointLights"), shader);
+        if(e->getMaterial()->requireLights())
+        {
+            directionnalLights.bind(shader->getLocation("dirLights"), shader);
+            pointLights.bind(shader->getLocation("pointLights"), shader);
+        }
         e->draw(viewMatrix, projectionMatrix);
     }
 }
diff --git a/scenecontroller.cpp b/scenecontroller.cpp
index 8b659a2..78ef202 100644
--- a/scenecontroller.cpp
+++ b/scenecontroller.cpp
@@ -9,22 +9,6 @@ void SceneController::setScene(Scene* myScene)
     camera = scene->getCamera();
 }
 
-void SceneController::mouseMove(int dx, int dy)
-{
-    switch(grabbed)
-    {
-    case 1:
-        camera->rotate(glm::vec2(dx*3.14f/180, dy*3.14f/180));
-        break;
-    case 2:
-        camera->translate(glm::vec3(dx*0.01f, dy*0.01f, 0));
-        //camera->lookAt(glm::vec3(0, 0, 0));
-        break;
-    default:
-        break;
-    }
-}
-
 void SceneController::mouseEvent(int button, bool state)
 {
     switch (button) {
@@ -34,12 +18,11 @@ void SceneController::mouseEvent(int button, bool state)
     case Qt::RightButton:
         grabbed += state ? 2 : -2;
         break;
+    case Qt::MiddleButton:
+        grabbed += state ? 4 : -4;
+        break;
     default:
         break;
     }
 }
 
-void SceneController::keyEvent(int key, bool state)
-{
-
-}
diff --git a/scenecontroller.h b/scenecontroller.h
index 6916869..fe025ff 100644
--- a/scenecontroller.h
+++ b/scenecontroller.h
@@ -16,9 +16,10 @@ public:
     SceneController() : camera(NULL), scene(NULL), grabbed(0) {}
 
     void setScene(Scene* myScene);
-    virtual void mouseMove(int dx, int dy);
+    virtual void mouseMove(int dx, int dy) {}
     virtual void mouseEvent(int button, bool state);
-    virtual void keyEvent(int key, bool state);
+    virtual void keyEvent(int key, bool state) {}
+    virtual void mouseWheelEvent(int scrollCount) {}
 };
 
 #endif // SCENECONTROLLER_H
diff --git a/shader.cpp b/shader.cpp
index 94324c2..9acb2ff 100644
--- a/shader.cpp
+++ b/shader.cpp
@@ -127,6 +127,11 @@ void Shader::bindVec3(GLuint location, glm::vec3 vec)
     glAssert(glUniform3fv(location, 1, glm::value_ptr(vec)));
 }
 
+void Shader::bindVec3Array(GLuint location, glm::vec3* vec, int nb_elements)
+{
+    glAssert(glUniform3fv(location, nb_elements, (GLfloat*)vec));
+}
+
 void Shader::bindTexture(GLuint location, GLuint tex_id)
 {
     glAssert(glUniform1i(location, tex_id));
diff --git a/skyboxmaterial.cpp b/skyboxmaterial.cpp
index 1ca4fa1..e0ae6a8 100644
--- a/skyboxmaterial.cpp
+++ b/skyboxmaterial.cpp
@@ -10,3 +10,8 @@ void SkyBoxMaterial::bindAttributes()
 {
     skyboxTex->bind(0);
 }
+
+bool SkyBoxMaterial::requireLights()
+{
+    return false;
+}
diff --git a/skyboxmaterial.h b/skyboxmaterial.h
index aae6b23..753f0de 100644
--- a/skyboxmaterial.h
+++ b/skyboxmaterial.h
@@ -10,6 +10,7 @@ class SkyBoxMaterial : public Material
 public:
     SkyBoxMaterial(Shader* myShader, const std::string filenames[6]);
     virtual void bindAttributes();
+    virtual bool requireLights();
 
 private:
     Texture* skyboxTex;
diff --git a/sparrowRenderer.pro b/sparrowRenderer.pro
index d6217d4..7d67d74 100644
--- a/sparrowRenderer.pro
+++ b/sparrowRenderer.pro
@@ -37,7 +37,8 @@ SOURCES += main.cpp\
     utils.cpp \
     lights.cpp \
     sparrowrenderer.cpp \
-    resourcebase.cpp
+    resourcebase.cpp \
+    focuscontroller.cpp
 
 HEADERS += mainwindow.h \
     myglwidget.h \
@@ -58,7 +59,8 @@ HEADERS += mainwindow.h \
     utils.h \
     lights.h \
     sparrowrenderer.h \
-    resourcebase.h
+    resourcebase.h \
+    focuscontroller.h
 
 FORMS   += mainwindow.ui