// Generate texture layout for all unplaced characters
bool FontFaceLayer::GenerateLayout()
{
int prior_num_rectangles = texture_layout.GetNumRectangles();
int prior_num_textures = texture_layout.GetNumTextures();
// Generate the texture layout; this will position the glyph rectangles efficiently and
// allocate the texture data ready for writing.
if (!texture_layout.GenerateLayout(512))
return false;
// Iterate over each rectangle in the layout, copying the glyph data into the rectangle as
// appropriate and generating geometry.
int rectangle_count = texture_layout.GetNumRectangles();
for (int i = prior_num_rectangles; i < rectangle_count; ++i)
{
TextureLayoutRectangle* rectangle = texture_layout.GetRectangle(i);
Character* character = characters[(word) rectangle->GetId()];
if (!character)
continue;
const TextureLayoutTexture* texture = texture_layout.GetTexture(rectangle->GetTextureIndex());
// Set the character's texture index.
character->texture_index = rectangle->GetTextureIndex();
// Generate the character's texture coordinates.
character->texcoords[0].x = float(rectangle->GetPosition().x) / float(texture->GetDimensions().x);
character->texcoords[0].y = float(rectangle->GetPosition().y) / float(texture->GetDimensions().y);
character->texcoords[1].x = float(rectangle->GetPosition().x + rectangle->GetDimensions().x) / float(texture->GetDimensions().x);
character->texcoords[1].y = float(rectangle->GetPosition().y + rectangle->GetDimensions().y) / float(texture->GetDimensions().y);
}
if (prior_num_textures > 0 && prior_num_rectangles != rectangle_count)
textures[prior_num_textures-1]->Update();
// Generate the textures.
int texture_count = texture_layout.GetNumTextures();
for (int i = prior_num_textures; i < texture_count; ++i)
{
Texture* texture = new Texture();
if (!texture->Load(String(64, "?font::%p/%p/%d/%p", handle, effect, i, texture_layout.GetTexture(i))))
{
delete texture;
return false;
}
textures.push_back(texture);
}
return true;
}
TextureLayout& TextureLayout::operator+=(const TextureLayout &layout)
{
const int texture_size = GetNumTextures();
for (TextureList::const_iterator i = layout.textures.begin(); i != layout.textures.end(); ++i)
{
TextureLayoutTexture *texture = *i;
texture->AddReference();
textures.push_back(texture);
}
for (RectangleList::const_iterator i = layout.rectangles.begin(); i != layout.rectangles.end(); ++i)
{
TextureLayoutRectangle *rect = *i;
rect->AddReference();
rect->Place(texture_size + rect->GetTextureIndex(), rect->GetPosition());
rectangles.push_back(rect);
}
return *this;
}