void Scene::draw_plane(const Plane* plane)
{
Vec3f c;
float rad;
get_bsphere(c, rad);
rad *= 100.0f;
Vec3f shade(0.5f);
Vec3f vert = plane->get_origin();
Vec3f v0 = vert - rad*plane->get_tangent() - rad*plane->get_binormal();
Vec3f v1 = vert + rad*plane->get_tangent() - rad*plane->get_binormal();
Vec3f v2 = vert - rad*plane->get_tangent() + rad*plane->get_binormal();
Vec3f v3 = vert + rad*plane->get_tangent() + rad*plane->get_binormal();
Vec3f norm = plane->get_normal();
Vec3f ray_vec = vert - cam->get_position();
float dist = length(ray_vec);
Ray r(cam->get_position(), ray_vec/dist);
r.hit_object = plane->get_mesh();
r.hit_face_id = 0;
const ObjMaterial* mat = r.get_hit_material();
unsigned int model = mat->illum;
if(model < shaders.size() && shaders[model])
{
r.hit_pos = vert;
r.hit_normal = norm;
r.has_hit = true;
r.dist = dist;
plane->get_uv(vert, r.u, r.v);
shade = shaders[model]->shade(r);
}
const Texture* tex = do_textures && mat->has_texture ? textures[mat->tex_name] : 0;
if(tex)
{
tex->enable();
tex->bind();
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
}
glBegin(GL_TRIANGLE_STRIP);
glColor3fv(shade.get());
glNormal3fv(norm.get());
Vec2f uv;
plane->get_uv(v0, uv[0], uv[1]);
glTexCoord2fv(uv.get());
glVertex3fv(v0.get());
plane->get_uv(v1, uv[0], uv[1]);
glTexCoord2fv(uv.get());
glVertex3fv(v1.get());
plane->get_uv(v2, uv[0], uv[1]);
glTexCoord2fv(uv.get());
glVertex3fv(v2.get());
plane->get_uv(v3, uv[0], uv[1]);
glTexCoord2fv(uv.get());
glVertex3fv(v3.get());
glEnd();
if(tex)
tex->disable();
}
