public void build()
{
DestroyRenderAreaTexture();
texture = new Texture2D(200, 200);
GameObject.Find("ViewRectangle").GetComponent <MeshRenderer> ().material.mainTexture = texture;
vp = new ViewPlane(texture.width, texture.height, 1.0f, 1);
vp.max_depth = 5;
tracer_ptr = new GlobalTracer(this);
Ambient amblight = new Ambient();
amblight.scale_radiance(1.0f);
amblight.set_color(new Color(1, 1, 1, 1));
set_ambient_light(amblight);
PerspectiveCamera pinhole_ptr1 = new PerspectiveCamera();
pinhole_ptr1.set_eye(new Vector3(0, 0, 500));
pinhole_ptr1.set_lookat(Vector3.zero);
pinhole_ptr1.set_view_distance(600.0f);
pinhole_ptr1.compute_uvw();
set_camera(pinhole_ptr1);
Directional directional = new Directional();
directional.set_color(new Color(1, 1, 1, 1));
directional.set_direction(new Vector3(-1, -1, 0));
directional.cast_shadows = false;
directional.scale_radiance(3.0f);
add_light(directional);
Reflective mat_ptr = new Reflective();
mat_ptr.set_kr(1.0f);
mat_ptr.set_exp(1.0f);
mat_ptr.set_cr(sphere_1_col);
Sphere sphere = new Sphere();
sphere.sphereCenter = new Vector3(0, 0, 0);
sphere.sphereRad = 1.0f;
sphere.set_material(mat_ptr);
Instance sphereInst = new Instance(sphere);
sphereInst.set_material(mat_ptr);
add_object(sphereInst);
sphereInst.set_identity();
sphereInst.Scale(20, 20, 20);
sphereInst.Translate(60.0f, 20.0f, 0);
Matte mat_ptr1 = new Matte();
mat_ptr1.ambient_brdf.Set_Sampler(100, 0.5f);
mat_ptr1.diffuse_brdf.Set_Sampler(100, 0.5f);
mat_ptr1.set_ka(1.0f);
mat_ptr1.set_kd(1);
mat_ptr1.set_cd(plane_col);
Plane p = new Plane();
p.planeNormal = new Vector3(0, 1, 0);
p.planePassThrghPnt = new Vector3(0, -20, 0);
p.set_material(mat_ptr1);
add_object(p);
Emissive mat_ptr2 = new Emissive();
mat_ptr2.scale_radiance(1);
mat_ptr2.set_ce(sphere_2_col);
Sphere sphere1 = new Sphere();
sphere1.sphereCenter = new Vector3(0, 0, 0);
sphere1.sphereRad = 1.0f;
sphere1.set_material(mat_ptr2);
Instance sphereInst1 = new Instance(sphere1);
sphereInst1.set_material(mat_ptr2);
add_object(sphereInst1);
sphereInst1.set_identity();
sphereInst1.Scale(20, 20, 20);
sphereInst1.Translate(-60.0f, 20.0f, 0);
render_scene();
}