void Model_Impl::insert_vbo(int vertex_count, const struct aiScene* sc, const struct aiNode* nd)
{
int i;
unsigned int n = 0, t;
bool use_texcoords = !vbo_texcoords.is_null();
// All meshes assigned to this node
for (; n < nd->mNumMeshes; ++n)
{
const struct aiMesh* mesh = sc->mMeshes[nd->mMeshes[n]];
int num_vertex = mesh->mNumFaces * 3;
if (!num_vertex)
continue;
std::vector<CL_Vec3f> normals;
std::vector<CL_Vec3f> vertices;
std::vector<CL_Vec2f> tex_coords;
normals.reserve(num_vertex);
vertices.reserve(num_vertex);
if (use_texcoords)
{
if (mesh->mTextureCoords == NULL || mesh->mTextureCoords[0] == NULL)
throw CL_Exception("This example expects texcoords to be set for this object");
tex_coords.reserve(num_vertex);
}
for (t = 0; t < mesh->mNumFaces; ++t)
{
const struct aiFace* face = &mesh->mFaces[t];
if (face->mNumIndices != 3)
throw CL_Exception("This example only supports triangles");
for(i = 0; i < face->mNumIndices; i++)
{
int index = face->mIndices[i];
normals.push_back(&mesh->mNormals[index].x);
vertices.push_back( &mesh->mVertices[index].x);
if (use_texcoords)
tex_coords.push_back( &mesh->mTextureCoords[0][index].x);
}
}
vbo_positions.upload_data(vertex_count * sizeof(CL_Vec3f), &vertices[0], num_vertex * sizeof(CL_Vec3f));
vbo_normals.upload_data(vertex_count * sizeof(CL_Vec3f), &normals[0], num_vertex * sizeof(CL_Vec3f));
if (use_texcoords)
vbo_texcoords.upload_data(vertex_count * sizeof(CL_Vec2f), &tex_coords[0], num_vertex * sizeof(CL_Vec2f));
vertex_count += num_vertex;
}
// All children
for (n = 0; n < nd->mNumChildren; ++n)
{
insert_vbo(vertex_count, sc, nd->mChildren[n]);
}
}
void Model_Impl::Draw(CL_GraphicContext &gc, GraphicStore *gs, const CL_Mat4f &modelview_matrix)
{
gc.set_modelview(modelview_matrix);
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, vbo_positions, 3, cl_type_float, (void *) 0);
prim_array.set_attributes(1, vbo_normals, 3, cl_type_float, (void *) 0);
if (!vbo_texcoords.is_null())
{
prim_array.set_attributes(2, vbo_texcoords, 2, cl_type_float, (void *) 0);
gc.set_texture(0, gs->texture_underwater);
gc.set_texture(1, gs->texture_background);
gs->shader_texture.SetMaterial(material_shininess, material_emission, material_ambient, material_specular);
gs->shader_texture.Use(gc);
}
else
{
throw CL_Exception("What! no texure coordinates?");
}
gc.draw_primitives(cl_triangles, vbo_size, prim_array);
gc.reset_texture(0);
gc.reset_texture(0);
}
void Model_Impl::Draw(CL_GraphicContext &gc, GraphicStore *gs, const CL_Mat4f &modelview_matrix, bool is_draw_shadow)
{
gc.set_modelview(modelview_matrix);
CL_PrimitivesArray prim_array(gc);
prim_array.set_attributes(0, vbo_positions, 3, cl_type_float, (void *) 0);
prim_array.set_attributes(1, vbo_normals, 3, cl_type_float, (void *) 0);
if (is_draw_shadow)
{
gs->shader_depth.Use(gc);
gc.draw_primitives(cl_triangles, vbo_size, prim_array);
}
else
{
if (!vbo_texcoords.is_null())
{
prim_array.set_attributes(2, vbo_texcoords, 2, cl_type_float, (void *) 0);
gs->shader_texture.SetShadowMatrix(gs->shadow_matrix);
gc.set_texture(0, gs->texture_brick);
gc.set_texture(1, gs->texture_shadow);
gs->shader_texture.SetMaterial(material_shininess, material_emission, material_ambient, material_specular);
gs->shader_texture.Use(gc);
}
else
{
gs->shader_color.SetMaterial(material_shininess, material_emission, material_ambient, material_specular);
gs->shader_color.Use(gc);
}
gc.draw_primitives(cl_triangles, vbo_size, prim_array);
gc.reset_texture(0);
gc.reset_texture(1);
}
}
