int GraphicsObjectData::getRenderingAlpha(const GraphicsObject& go,
const GraphicsObject* parent) {
if (!parent) {
return go.computedAlpha();
} else {
return int((parent->computedAlpha() / 255.0f) *
(go.computedAlpha() / 255.0f) * 255);
}
}
void ColourFilterObjectData::render(const GraphicsObject& go,
const GraphicsObject* parent,
std::ostream* tree) {
if (go.width() != 100 || go.height() != 100) {
static bool printed = false;
if (!printed) {
printed = true;
cerr << "We can't yet scaling colour filters." << endl;
}
}
// Lazily create colour object.
if (!colour_filer_) {
colour_filer_.reset(graphics_system_.BuildColourFiller(screen_rect_));
}
RGBAColour colour = go.colour();
colour.setAlpha(
static_cast<int>(colour.a_float() * go.computedAlpha()));
colour_filer_->Fill(go, colour);
if (tree) {
*tree << " ColourFilterObjectData" << std::endl
<< " Screen rect: " << screen_rect_ << std::endl
<< " Colour: " << colour << std::endl
<< " Properties: ";
PrintGraphicsObjectToTree(go, tree);
*tree << endl;
}
}
void ColourFilterObjectData::render(const GraphicsObject& go,
const GraphicsObject* parent,
std::ostream* tree) {
if (go.mono() == 0) {
RGBAColour colour = go.colour();
colour.setAlpha(
static_cast<int>(colour.a_float() * go.computedAlpha()));
graphics_system_.fillScreenArea(screen_rect_, colour);
if (tree)
objectInfo(*tree);
} else {
static bool printed = false;
if (!printed) {
printed = true;
cerr << "We don't yet deal with objMono() and colour filters." << endl;
}
}
}
