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#pragma once
#include <string>
#include <unordered_map>
#include <mbgl/util/chrono.hpp>
#include <mbgl/text/collision_index.hpp>
#include <mbgl/layout/symbol_projection.hpp>
#include <unordered_set>
namespace mbgl {
class RenderSymbolLayer;
class SymbolBucket;
class OpacityState {
public:
OpacityState(bool placed, bool offscreen);
OpacityState(const OpacityState& prevOpacityState, float increment, bool placed);
bool isHidden() const;
float opacity;
bool placed;
};
class JointOpacityState {
public:
JointOpacityState(bool placedIcon, bool placedText, bool offscreen);
JointOpacityState(const JointOpacityState& prevOpacityState, float increment, bool placedIcon, bool placedText);
bool isHidden() const;
OpacityState icon;
OpacityState text;
};
class JointPlacement {
public:
JointPlacement(bool text_, bool icon_, bool offscreen_)
: text(text_), icon(icon_), offscreen(offscreen_)
{}
const bool text;
const bool icon;
// offscreen = outside viewport, but within CollisionIndex::viewportPadding px of the edge
// Because these symbols aren't onscreen yet, we can skip the "fade in" animation,
// and if a subsequent viewport change brings them into view, they'll be fully
// visible right away.
const bool offscreen;
};
class Placement {
public:
Placement(const TransformState&, MapMode mapMode);
void placeLayer(RenderSymbolLayer&, const mat4&, bool showCollisionBoxes);
bool commit(const Placement& prevPlacement, TimePoint);
void updateLayerOpacities(RenderSymbolLayer&);
JointOpacityState getOpacity(uint32_t crossTileSymbolID) const;
float symbolFadeChange(TimePoint now) const;
bool hasTransitions(TimePoint now) const;
const CollisionIndex& getCollisionIndex() const;
bool stillRecent(TimePoint now) const;
void setRecent(TimePoint now);
void setStale();
private:
void placeLayerBucket(
SymbolBucket&,
const mat4& posMatrix,
const mat4& textLabelPlaneMatrix,
const mat4& iconLabelPlaneMatrix,
const float scale,
const float pixelRatio,
const bool showCollisionBoxes,
std::unordered_set<uint32_t>& seenCrossTileIDs);
void updateBucketOpacities(SymbolBucket&, std::set<uint32_t>&);
CollisionIndex collisionIndex;
TransformState state;
MapMode mapMode;
TimePoint commitTime;
std::unordered_map<uint32_t, JointPlacement> placements;
std::unordered_map<uint32_t, JointOpacityState> opacities;
TimePoint recentUntil;
bool stale = false;
};
} // namespace mbgl
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