// Renders the element's background, if it has one.
void ElementBackground::RenderBackground()
{
if (background_dirty)
{
background_dirty = false;
GenerateBackground();
}
geometry.Render(element->GetAbsoluteOffset(Box::PADDING));
}
void Menu::Begin()
{
menutime = 0;
sliderindex = 0;
slidertarget = 0;
rendertime = 0;
titlefont = FontCache::LoadFont( "resources/armalite.ttf", 80 );
optionfont = FontCache::LoadFont( "resources/armalite.ttf", 32 );
background = nullptr;
GenerateBackground();
// AUDIO->PlayMusic( "resources/Paul Hannay (Feekzoid) - Last_Ninja_4_intro [1].ogg", true );
}
// Generates the background geometry for the element.
void ElementBackground::GenerateBackground()
{
// Fetch the new colour for the background. If the colour is transparent, then we don't render any background.
Colourb colour = element->GetProperty(BACKGROUND_COLOR)->value.Get< Colourb >();
float opacity = element->GetProperty<float>(OPACITY);
// Apply opacity
colour.alpha = (byte)(opacity * (float)colour.alpha);
if (colour.alpha <= 0)
{
geometry.GetVertices().clear();
geometry.GetIndices().clear();
geometry.Release();
return;
}
// Work out how many boxes we need to generate geometry for.
int num_boxes = 0;
for (int i = 0; i < element->GetNumBoxes(); ++i)
{
const Box& box = element->GetBox(i);
Vector2f size = box.GetSize(Box::PADDING);
if (size.x > 0 && size.y > 0)
num_boxes++;
}
std::vector< Vertex >& vertices = geometry.GetVertices();
std::vector< int >& indices = geometry.GetIndices();
int index_offset = 0;
vertices.resize(4 * num_boxes);
indices.resize(6 * num_boxes);
if (num_boxes > 0)
{
Vertex* raw_vertices = &vertices[0];
int* raw_indices = &indices[0];
for (int i = 0; i < element->GetNumBoxes(); ++i)
GenerateBackground(raw_vertices, raw_indices, index_offset, element->GetBox(i), colour);
}
geometry.Release();
}
