diff --git a/src/input.c b/src/input.c
index 319923a..8a0f1a8 100644
--- a/src/input.c
+++ b/src/input.c
@@ -9,7 +9,7 @@ unsigned char selected_axis = 0;
 int window_width;
 int window_height;
 
-unsigned char animate_index=0;
+unsigned char animate_index = 0;
 
 versor q = GLM_QUAT_IDENTITY_INIT;
 
@@ -56,23 +56,22 @@ void __key_callback_input(
 		projection.w = projection.x;
 		projection.x = tmp;
 
-		animate_index=1;
+		animate_index = 1;
 		break;
 	case GLFW_KEY_O:
 		tmp = projection.w;
 		projection.w = projection.y;
 		projection.y = tmp;
-		animate_index=2;
+		animate_index = 2;
 		break;
 	case GLFW_KEY_P:
 		tmp = projection.w;
 		projection.w = projection.z;
 		projection.z = tmp;
-		animate_index=3;
+		animate_index = 3;
 		break;
 	}
 
-
 	return;
 }
 
@@ -114,9 +113,9 @@ void __scroll_callback_input(GLFWwindow *window, double xoffset, double yoffset)
 	versor p = GLM_QUAT_IDENTITY_INIT;
 	versor r = GLM_QUAT_IDENTITY_INIT;
 
-	//glm_quatv(p, yoffset * ANGLE, axis[selected_axis]);
-	glm_quatv(p, yoffset * ANGLE * 2, (vec3){-1,0,0});
-	glm_quatv(r, xoffset * ANGLE * 2, (vec3){0,1,0});
+	// glm_quatv(p, yoffset * ANGLE, axis[selected_axis]);
+	glm_quatv(p, yoffset * ANGLE * 2, (vec3){-1, 0, 0});
+	glm_quatv(r, xoffset * ANGLE * 2, (vec3){0, 1, 0});
 	glm_quat_mul(p, q, q);
 	glm_quat_mul(r, q, q);
 
@@ -129,6 +128,23 @@ void __scroll_callback_input(GLFWwindow *window, double xoffset, double yoffset)
 	glm_quat_rotatev(r, axis[2], axis[2]);
 }
 
+void __drop_callback_input(GLFWwindow *window, int count, char **path)
+{
+	struct surface surface;
+
+	if (create_surface_klein(*path, &surface))
+		return;
+
+	if (!(projection.mesh = create_mesh(surface)))
+		return;
+
+	projection.m = surface.dim;
+	set_projection_mesh(projection);
+
+	free(surface.norm);
+	free(surface.data);
+}
+
 quat_t poll_input(window_t window)
 {
 	versor p = GLM_QUAT_IDENTITY_INIT;
@@ -172,10 +188,11 @@ end:
 	glm_quat_normalize(q);
 
 	// LOG INFO
-	if(0)
+	if (0)
 	{
 		printf("QUAT: %2.5f %2.5f %2.5f %2.5f\n", q[0], q[1], q[2], q[3]);
-		printf("PROY: %3d %3d %3d (%3d)\n", projection.x, projection.y, projection.z, projection.w );
+		printf("PROY: %3d %3d %3d (%3d)\n", projection.x, projection.y,
+			projection.z, projection.w);
 		printf("\n");
 	}
 	return q;
diff --git a/src/main.c b/src/main.c
index 15dddc2..224a7f0 100644
--- a/src/main.c
+++ b/src/main.c
@@ -15,7 +15,7 @@
 #define M_PI 3.14159
 #endif
 
-struct projection projection = {.x = 0, .y = 1, .z = 2, .w = 3};
+struct projection projection = {.x = 0, .y = 1, .z = 2, .w = 3, .mesh = NULL};
 
 const char *wname = "manigraph: manifold grapher";
 
@@ -29,7 +29,6 @@ void mlog(char *msg)
 }
 
 window_t window;
-mesh_t m_surface;
 id_t shader, shader_plain;
 
 extern volatile unsigned char animate_index;
@@ -75,8 +74,11 @@ static inline
 	}
 	clean_context();
 
-	draw_mesh(shader, m_surface);
-	draw_mesh_lines(shader_plain, m_surface);
+	if (!projection.mesh)
+		return;
+
+	draw_mesh(shader, projection.mesh);
+	draw_mesh_lines(shader_plain, projection.mesh);
 }
 
 int main(void)
@@ -127,30 +129,6 @@ int main(void)
 		fix_matrix_load(shader_plain, (float)WIDTH / HEIGHT);
 	}
 
-	mlog("[MESH] Inicializando...\n");
-	{
-		struct surface surface;
-
-		if( create_surface_klein("test.klein", &surface) )
-		{
-			mlog("[MESH] Error al leer el archivo...\n");
-			goto error_mesh_surface;
-		}
-
-		if (!(m_surface = create_mesh(surface)))
-		{
-			mlog("[MESH] Error al inicializar...\n");
-			goto error_mesh_surface;
-		}
-
-		projection.m = surface.dim;
-		projection.mesh = m_surface;
-		set_projection_mesh(projection);
-
-		free(surface.norm);
-		free(surface.data);
-	}
-
 	mlog("[MAIN LOOP] Inicializando...\n");
 #ifdef EMSCRIPTEN
 	emscripten_set_main_loop(&main_loop, 60, 1);
@@ -162,7 +140,7 @@ int main(void)
 	mlog("[MAIN LOOP] Terminando...\n");
 
 	mlog("[MESH] Destruyendo...\n");
-	destroy_mesh(m_surface);
+	destroy_mesh(projection.mesh);
 	mlog("[SHADER] Destruyendo...\n");
 	destroy_shader(shader_plain);
 	mlog("[SHADER] Destruyendo...\n");
@@ -172,9 +150,6 @@ int main(void)
 	return 0;
 
 error_context:
-	mlog("[MESH] Destruyendo...\n");
-	destroy_mesh(m_surface);
-error_mesh_surface:
 	mlog("[SHADER] Destruyendo...\n");
 	destroy_shader(shader_plain);
 error_shader_plain:
diff --git a/src/window.c b/src/window.c
index 2354aa6..521e673 100644
--- a/src/window.c
+++ b/src/window.c
@@ -7,6 +7,7 @@ void __window_callback_input(GLFWwindow *, int, int);
 void __mouse_callback_input(GLFWwindow *, int, int, int);
 void __scroll_callback_input(GLFWwindow *, double, double);
 void __key_callback_input(GLFWwindow *, int, int, int, int);
+void __drop_callback_input(GLFWwindow *, int, const char **);
 
 window_t init_window(unsigned int w, unsigned int h, const char *name);
 
@@ -64,6 +65,7 @@ window_t init_window(unsigned int width, unsigned int height, const char *title)
 	glfwSetMouseButtonCallback((GLFWwindow *)window, __mouse_callback_input);
 	glfwSetScrollCallback((GLFWwindow *)window, __scroll_callback_input);
 	glfwSetKeyCallback((GLFWwindow *)window, __key_callback_input);
+	glfwSetDropCallback((GLFWwindow *)window, __drop_callback_input);
 
 	__window_callback_input((GLFWwindow *)window, width, height);