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ordenació per buckets

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Sergio
2026-03-12 22:55:33 +01:00
parent 02fdcd4113
commit 6aa4a1227e
2 changed files with 23 additions and 22 deletions
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41
source/engine.cpp
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@@ -718,34 +718,31 @@ void Engine::render() {
// MODO FIGURA 3D: Ordenar por profundidad Z (Painter's Algorithm)
// Las pelotas con menor depth_brightness (más lejos/oscuras) se renderizan primero
// Crear vector de índices para ordenamiento
std::vector<size_t> render_order;
render_order.reserve(balls.size());
// Bucket sort per profunditat Z (O(N) vs O(N log N))
for (size_t i = 0; i < balls.size(); i++) {
render_order.push_back(i);
int b = static_cast<int>(balls[i]->getDepthBrightness() * (DEPTH_SORT_BUCKETS - 1));
depth_buckets_[std::clamp(b, 0, DEPTH_SORT_BUCKETS - 1)].push_back(i);
}
// Ordenar índices por profundidad Z (menor primero = fondo primero)
std::sort(render_order.begin(), render_order.end(), [&balls](size_t a, size_t b) {
return balls[a]->getDepthBrightness() < balls[b]->getDepthBrightness();
});
// Renderizar en orden de profundidad (bucket 0 = fons, bucket 255 = davant)
for (int b = 0; b < DEPTH_SORT_BUCKETS; b++) {
for (size_t idx : depth_buckets_[b]) {
SDL_FRect pos = balls[idx]->getPosition();
Color color = theme_manager_->getInterpolatedColor(idx); // Usar color interpolado (LERP)
float brightness = balls[idx]->getDepthBrightness();
float depth_scale = balls[idx]->getDepthScale();
// Renderizar en orden de profundidad (fondo → frente)
for (size_t idx : render_order) {
SDL_FRect pos = balls[idx]->getPosition();
Color color = theme_manager_->getInterpolatedColor(idx); // Usar color interpolado (LERP)
float brightness = balls[idx]->getDepthBrightness();
float depth_scale = balls[idx]->getDepthScale();
// Mapear brightness de 0-1 a rango MIN-MAX
float brightness_factor = (ROTOBALL_MIN_BRIGHTNESS + brightness * (ROTOBALL_MAX_BRIGHTNESS - ROTOBALL_MIN_BRIGHTNESS)) / 255.0f;
// Mapear brightness de 0-1 a rango MIN-MAX
float brightness_factor = (ROTOBALL_MIN_BRIGHTNESS + brightness * (ROTOBALL_MAX_BRIGHTNESS - ROTOBALL_MIN_BRIGHTNESS)) / 255.0f;
// Aplicar factor de brillo al color
int r_mod = static_cast<int>(color.r * brightness_factor);
int g_mod = static_cast<int>(color.g * brightness_factor);
int b_mod = static_cast<int>(color.b * brightness_factor);
// Aplicar factor de brillo al color
int r_mod = static_cast<int>(color.r * brightness_factor);
int g_mod = static_cast<int>(color.g * brightness_factor);
int b_mod = static_cast<int>(color.b * brightness_factor);
addSpriteToBatch(pos.x, pos.y, pos.w, pos.h, r_mod, g_mod, b_mod, depth_scale);
addSpriteToBatch(pos.x, pos.y, pos.w, pos.h, r_mod, g_mod, b_mod, depth_scale);
}
depth_buckets_[b].clear(); // netejar per al proper frame
}
} else {
// MODO PHYSICS: Renderizar en orden normal del vector (sin escala de profundidad)