策略抽离

Core/render/Render_Frame_Snapshot.cpp

@@ -0,0 +1,27 @@
+#include "Render_Frame_Snapshot.h"
+#include "../architecture/Timeline_Stream.h"
+#include <algorithm>
+
+namespace renderive {
+
+std::shared_ptr<const Timeline_Stream_Snapshot> Render_Frame_Snapshot::timeline_snapshot(
+    const std::shared_ptr<Timeline_Stream>& stream,
+    int time_point_size,
+    int label_tick_interval,
+    bool start_coord_to_end_coord) const {
+    if (!stream)
+        return {};
+    time_point_size = std::max(1, time_point_size);
+    label_tick_interval = std::max(1, label_tick_interval);
+    if (!timeline_cache)
+        timeline_cache = std::make_shared<Timeline_Stream_Frame_Cache>();
+    for (auto& item : timeline_cache->items) {
+        if (item.stream.lock() == stream && item.time_point_size == time_point_size && item.tick_space == label_tick_interval && item.start_coord_to_end_coord == start_coord_to_end_coord)
+            return item.snapshot;
+    }
+    auto snapshot = std::make_shared<Timeline_Stream_Snapshot>(stream->capture(time_point_size, label_tick_interval, start_coord_to_end_coord));
+    timeline_cache->items.push_back({stream, time_point_size, label_tick_interval, start_coord_to_end_coord, snapshot});
+    return snapshot;
+}
+
+} // namespace renderive