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Linkgraph: Scroll overlay pixel cache instead of clearing it on scroll

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Reduce cost of preparing/drawing cache
Improve missing station checks in RefreshDrawCache
Remove need for checks in DrawLinks
Don't rebase overlay cache coordinate to screen in viewport map mode
This commit is contained in:
Jonathan G Rennison
2024-01-18 01:57:13 +00:00
parent 6c30e88890
commit 7a5e8dd991
5 changed files with 113 additions and 43 deletions
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9
src/linkgraph/linkgraph_gui.h
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@@ -87,10 +87,12 @@ public:
void SetDirty() { this->dirty = true; }
/** Get a bitmask of the currently shown cargoes. */
CargoTypes GetCargoMask() { return this->cargo_mask; }
CargoTypes GetCargoMask() const { return this->cargo_mask; }
/** Get a bitmask of the currently shown companies. */
CompanyMask GetCompanyMask() { return this->company_mask; }
CompanyMask GetCompanyMask() const { return this->company_mask; }
uint64_t GetRebuildCounter() const { return this->rebuild_counter; }
protected:
Window *window; ///< Window to be drawn into.
@@ -102,7 +104,8 @@ protected:
Rect cached_region; ///< Region covered by cached_links and cached_stations.
uint scale; ///< Width of link lines.
bool dirty; ///< Set if overlay should be rebuilt.
uint64_t last_update_number = 0; ///< Last window update number
uint64_t last_update_number = 0; ///< Last window update number
uint64_t rebuild_counter = 0; ///< Rebuild counter
Point GetStationMiddle(const Station *st) const;