// Generates the character and texture data for the layer.
bool FontFaceLayer::Initialise(const FontFaceHandle* _handle, FontEffect* _effect, const FontFaceLayer* clone, bool deep_clone)
{
handle = _handle;
effect = _effect;
if (effect != NULL)
{
effect->AddReference();
colour = effect->GetColour();
}
const FontGlyphMap& glyphs = handle->GetGlyphs();
// Clone the geometry and textures from the clone layer.
if (clone != NULL)
{
// Copy the cloned layer's characters.
characters = clone->characters;
// Copy (and reference) the cloned layer's textures.
for (size_t i = 0; i < clone->textures.size(); ++i)
textures.push_back(clone->textures[i]);
// Request the effect (if we have one) adjust the origins as appropriate.
if (!deep_clone &&
effect != NULL)
{
for (FontGlyphMap::const_iterator i = glyphs.begin(); i != glyphs.end(); ++i)
{
const FontGlyph& glyph = i->second;
CharacterMap::iterator character_iterator = characters.find(i->first);
if (character_iterator == characters.end())
continue;
Character& character = character_iterator->second;
Vector2i glyph_origin(Math::RealToInteger(character.origin.x), Math::RealToInteger(character.origin.y));
Vector2i glyph_dimensions(Math::RealToInteger(character.dimensions.x), Math::RealToInteger(character.dimensions.y));
if (effect->GetGlyphMetrics(glyph_origin, glyph_dimensions, glyph))
{
character.origin.x = (float) glyph_origin.x;
character.origin.y = (float) glyph_origin.y;
}
else
characters.erase(character_iterator);
}
}
}
else
{
return AddNewGlyphs();
}
return true;
}
// Generates the character and rectangle for a glyph.
void FontFaceLayer::GenerateCharacter( const FontGlyph& glyph )
{
ROCKET_ASSERT(glyph.character < characters.size());
if (characters[glyph.character])
return;
Vector2i glyph_origin(0, 0);
Vector2i glyph_dimensions = glyph.bitmap_dimensions;
// Adjust glyph origin / dimensions for the font outline effect.
if (effect != NULL && effect->HasUniqueTexture())
{
if (!effect->GetGlyphMetrics(glyph_origin, glyph_dimensions, glyph))
return;
}
Character* character = new Character();
character->origin = Vector2f((float) (glyph_origin.x + glyph.bearing.x), (float) (glyph_origin.y - glyph.bearing.y));
character->dimensions = Vector2f((float) glyph_dimensions.x - glyph_origin.x, (float) glyph_dimensions.y - glyph_origin.y);
characters[glyph.character] = character;
// Only adjust glyph origin for the font shadow effect.
if (effect != NULL && !effect->HasUniqueTexture())
{
Vector2i glyph_origin(Math::RealToInteger(character->origin.x), Math::RealToInteger(character->origin.y));
Vector2i glyph_dimensions(Math::RealToInteger(character->dimensions.x), Math::RealToInteger(character->dimensions.y));
if (effect->GetGlyphMetrics(glyph_origin, glyph_dimensions, glyph))
{
character->origin.x = (float) glyph_origin.x;
character->origin.y = (float) glyph_origin.y;
}
else
character->texture_index = -1;
}
else
// Add the character's dimensions into the texture layout engine.
texture_layout.AddRectangle(glyph.character, glyph_dimensions - glyph_origin);
}
// Generates the character and texture data for the layer.
bool FontFaceLayer::Initialise(const FontFaceHandle* _handle, FontEffect* _effect, const FontFaceLayer* clone, bool deep_clone)
{
handle = _handle;
effect = _effect;
if (effect != NULL)
{
effect->AddReference();
colour = effect->GetColour();
}
const FontGlyphList& glyphs = handle->GetGlyphs();
// Clone the geometry and textures from the clone layer.
if (clone != NULL)
{
// Copy the cloned layer's characters.
size_t character_count = clone->characters.size();
characters.resize(character_count, NULL);
for (size_t i = 0; i < character_count; ++i)
{
const Character* clone_character = clone->characters[i];
if (clone_character)
characters[i] = new Character(*clone_character);
}
// Copy (and reference) the cloned layer's textures.
for (size_t i = 0; i < clone->textures.size(); ++i)
textures.push_back(new Texture(*clone->textures[i]));
// Request the effect (if we have one) adjust the origins as appropriate.
if (!deep_clone &&
effect != NULL)
{
for (FontGlyphList::const_iterator i = glyphs.begin(); i != glyphs.end(); ++i)
{
const FontGlyph* glyph = *i;
if (!glyph)
continue;
if (glyph->character >= character_count)
continue;
Character* character = characters[glyph->character];
ROCKET_ASSERT(character);
Vector2i glyph_origin(Math::RealToInteger(character->origin.x), Math::RealToInteger(character->origin.y));
Vector2i glyph_dimensions(Math::RealToInteger(character->dimensions.x), Math::RealToInteger(character->dimensions.y));
if (effect->GetGlyphMetrics(glyph_origin, glyph_dimensions, *glyph))
{
character->origin.x = (float) glyph_origin.x;
character->origin.y = (float) glyph_origin.y;
}
else
character->texture_index = -1;
}
}
}
else
{
// Initialise the texture layout for the glyphs.
characters.resize(glyphs.size(), NULL);
for (FontGlyphList::const_iterator i = glyphs.begin(); i != glyphs.end(); ++i)
{
const FontGlyph* glyph = *i;
if (!glyph)
continue;
GenerateCharacter(*glyph);
}
if (!GenerateLayout())
return false;
}
return true;
}
// Generates the character and texture data for the layer.
bool FontFaceLayer::Initialise(const FontFaceHandle* _handle, FontEffect* _effect, const FontFaceLayer* clone, bool deep_clone)
{
handle = _handle;
effect = _effect;
if (effect != NULL)
{
effect->AddReference();
colour = effect->GetColour();
}
const FontGlyphList& glyphs = handle->GetGlyphs();
// Clone the geometry and textures from the clone layer.
if (clone != NULL)
{
// Copy the cloned layer's characters.
characters = clone->characters;
// Copy (and reference) the cloned layer's textures.
for (size_t i = 0; i < clone->textures.size(); ++i)
textures.push_back(clone->textures[i]);
// Request the effect (if we have one) adjust the origins as appropriate.
if (!deep_clone &&
effect != NULL)
{
for (FontGlyphList::const_iterator i = glyphs.begin(); i != glyphs.end(); ++i)
{
const FontGlyph& glyph = *i;
if (glyph.character >= characters.size())
continue;
Character& character = characters[glyph.character];
Vector2i glyph_origin(Math::RealToInteger(character.origin.x), Math::RealToInteger(character.origin.y));
Vector2i glyph_dimensions(Math::RealToInteger(character.dimensions.x), Math::RealToInteger(character.dimensions.y));
if (effect->GetGlyphMetrics(glyph_origin, glyph_dimensions, glyph))
{
character.origin.x = (float) glyph_origin.x;
character.origin.y = (float) glyph_origin.y;
}
else
character.texture_index = -1;
}
}
}
else
{
// Initialise the texture layout for the glyphs.
characters.resize(glyphs.size(), Character());
for (FontGlyphList::const_iterator i = glyphs.begin(); i != glyphs.end(); ++i)
{
const FontGlyph& glyph = *i;
Vector2i glyph_origin(0, 0);
Vector2i glyph_dimensions = glyph.bitmap_dimensions;
// Adjust glyph origin / dimensions for the font effect.
if (effect != NULL)
{
if (!effect->GetGlyphMetrics(glyph_origin, glyph_dimensions, glyph))
continue;
}
Character character;
character.origin = Vector2f((float) (glyph_origin.x + glyph.bearing.x), (float) (glyph_origin.y - glyph.bearing.y));
character.dimensions = Vector2f((float) glyph_dimensions.x - glyph_origin.x, (float) glyph_dimensions.y - glyph_origin.y);
characters[glyph.character] = character;
// Add the character's dimensions into the texture layout engine.
texture_layout.AddRectangle(glyph.character, glyph_dimensions - glyph_origin);
}
// 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.
for (int i = 0; i < texture_layout.GetNumRectangles(); ++i)
{
TextureLayoutRectangle& rectangle = texture_layout.GetRectangle(i);
const TextureLayoutTexture& texture = texture_layout.GetTexture(rectangle.GetTextureIndex());
Character& character = characters[(word) rectangle.GetId()];
// 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);
}
// Generate the textures.
for (int i = 0; i < texture_layout.GetNumTextures(); ++i)
{
Texture texture;
if (!texture.Load(String(64, "?font::%p/%p/%d", handle, effect, i)))
return false;
textures.push_back(texture);
}
}
return true;
}
