diff --git a/L07/resources/vert.glsl b/L07/resources/vert.glsl
index 9d6ef91..bee4a2c 100644
--- a/L07/resources/vert.glsl
+++ b/L07/resources/vert.glsl
@@ -5,11 +5,16 @@ uniform mat4 MV;
 attribute vec4 aPos; // In object space
 attribute vec3 aNor; // In object space
 varying vec3 color;
+uniform float t;
 
 void main()
 {
-	gl_Position = P * MV * aPos;
+  vec4 temp = aPos;
+  temp.z = (cos(20*aPos.x + t) + sin(20*aPos.y + t))/20.0;
+	gl_Position = P * MV * temp;
 	vec3 l = vec3(0.0, 0.0, 1.0); // In camera space
-  vec4 n = MV * vec4(aNor, 0.0);
+  vec3 tempn = aNor;
+  tempn.z = (cos(20*aPos.x + t) + sin(20*aPos.y + t))/20.0;
+  vec4 n = MV * vec4(tempn, 0.0);
   color = vec3((n.x*l.x + n.y*l.y + n.z*l.z), (n.x*l.x + n.y*l.y + n.z*l.z), (n.x*l.x + n.y*l.y + n.z*l.z));
 }
diff --git a/L07/src/main.cpp b/L07/src/main.cpp
index 8f15ced..183f3ad 100644
--- a/L07/src/main.cpp
+++ b/L07/src/main.cpp
@@ -28,6 +28,7 @@ shared_ptr<Camera> camera;
 shared_ptr<Program> prog;
 map<string,GLuint> bufIDs;
 int indCount;
+float t = glfwGetTime();
 
 bool keyToggles[256] = {false}; // only for English keyboards!
 
@@ -104,6 +105,7 @@ static void init()
 	prog->addAttribute("aNor");
 	prog->addUniform("MV");
 	prog->addUniform("P");
+  prog->addUniform("t");
 	
 	camera = make_shared<Camera>();
 	camera->setInitDistance(2.0f);
@@ -261,7 +263,9 @@ static void render()
 	camera->applyProjectionMatrix(P);
 	MV->pushMatrix();
 	camera->applyViewMatrix(MV);
-	
+
+  t = glfwGetTime();
+
 	prog->bind();
 	glUniformMatrix4fv(prog->getUniform("P"), 1, GL_FALSE, value_ptr(P->topMatrix()));
 	glEnableVertexAttribArray(prog->getAttribute("aPos"));
@@ -277,6 +281,7 @@ static void render()
 	glBindBuffer(GL_ARRAY_BUFFER, 0);
 	glDisableVertexAttribArray(prog->getAttribute("aNor"));
 	glDisableVertexAttribArray(prog->getAttribute("aPos"));
+  glUniform1f(prog->getUniform("t"), t);
 	prog->unbind();
 	
 	MV->popMatrix();