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#include <mbgl/layout/symbol_instance.hpp>
#include <mbgl/style/layers/symbol_layer_properties.hpp>
#include <utility>
namespace mbgl {
using namespace style;
namespace {
const Shaping& getAnyShaping(const ShapedTextOrientations& shapedTextOrientations) {
if (shapedTextOrientations.right) return shapedTextOrientations.right;
if (shapedTextOrientations.center) return shapedTextOrientations.center;
if (shapedTextOrientations.left) return shapedTextOrientations.left;
if (shapedTextOrientations.vertical) return shapedTextOrientations.vertical;
return shapedTextOrientations.horizontal;
}
} // namespace
SymbolInstanceSharedData::SymbolInstanceSharedData(GeometryCoordinates line_,
const ShapedTextOrientations& shapedTextOrientations,
const optional<PositionedIcon>& shapedIcon,
const optional<PositionedIcon>& verticallyShapedIcon,
const style::SymbolLayoutProperties::Evaluated& layout,
const style::SymbolPlacementType textPlacement,
const std::array<float, 2>& textOffset,
const GlyphPositions& positions,
bool allowVerticalPlacement) : line(std::move(line_)) {
// Create the quads used for rendering the icon and glyphs.
if (shapedIcon) {
iconQuad = getIconQuad(*shapedIcon, getAnyShaping(shapedTextOrientations).writingMode);
if (verticallyShapedIcon) {
verticalIconQuad = getIconQuad(*verticallyShapedIcon, shapedTextOrientations.vertical.writingMode);
}
}
bool singleLineInitialized = false;
const auto initHorizontalGlyphQuads = [&] (SymbolQuads& quads, const Shaping& shaping) {
if (!shapedTextOrientations.singleLine) {
quads = getGlyphQuads(shaping, textOffset, layout, textPlacement, positions, allowVerticalPlacement);
return;
}
if (!singleLineInitialized) {
rightJustifiedGlyphQuads = getGlyphQuads(shaping, textOffset, layout, textPlacement, positions, allowVerticalPlacement);
singleLineInitialized = true;
}
};
if (shapedTextOrientations.right) {
initHorizontalGlyphQuads(rightJustifiedGlyphQuads, shapedTextOrientations.right);
}
if (shapedTextOrientations.center) {
initHorizontalGlyphQuads(centerJustifiedGlyphQuads, shapedTextOrientations.center);
}
if (shapedTextOrientations.left) {
initHorizontalGlyphQuads(leftJustifiedGlyphQuads, shapedTextOrientations.left);
}
if (shapedTextOrientations.vertical) {
verticalGlyphQuads = getGlyphQuads(shapedTextOrientations.vertical, textOffset, layout, textPlacement, positions, allowVerticalPlacement);
}
}
bool SymbolInstanceSharedData::empty() const {
return rightJustifiedGlyphQuads.empty() && centerJustifiedGlyphQuads.empty() && leftJustifiedGlyphQuads.empty() && verticalGlyphQuads.empty();
}
SymbolInstance::SymbolInstance(Anchor& anchor_,
std::shared_ptr<SymbolInstanceSharedData> sharedData_,
const ShapedTextOrientations& shapedTextOrientations,
const optional<PositionedIcon>& shapedIcon,
const optional<PositionedIcon>& verticallyShapedIcon,
const float textBoxScale_,
const float textPadding,
const SymbolPlacementType textPlacement,
const std::array<float, 2>& textOffset_,
const float iconBoxScale,
const float iconPadding,
const std::array<float, 2>& iconOffset_,
const IndexedSubfeature& indexedFeature,
const std::size_t layoutFeatureIndex_,
const std::size_t dataFeatureIndex_,
std::u16string key_,
const float overscaling,
const float iconRotation,
const float textRotation,
const std::array<float, 2>& variableTextOffset_,
bool allowVerticalPlacement,
const SymbolContent iconType) :
sharedData(std::move(sharedData_)),
anchor(anchor_),
symbolContent(iconType),
// Create the collision features that will be used to check whether this symbol instance can be placed
// As a collision approximation, we can use either the vertical or any of the horizontal versions of the feature
textCollisionFeature(sharedData->line, anchor, getAnyShaping(shapedTextOrientations), textBoxScale_, textPadding, textPlacement, indexedFeature, overscaling, textRotation),
iconCollisionFeature(sharedData->line, anchor, shapedIcon, iconBoxScale, iconPadding, indexedFeature, iconRotation),
writingModes(WritingModeType::None),
layoutFeatureIndex(layoutFeatureIndex_),
dataFeatureIndex(dataFeatureIndex_),
textOffset(textOffset_),
iconOffset(iconOffset_),
key(std::move(key_)),
textBoxScale(textBoxScale_),
variableTextOffset(variableTextOffset_),
singleLine(shapedTextOrientations.singleLine) {
// 'hasText' depends on finding at least one glyph in the shaping that's also in the GlyphPositionMap
if(!sharedData->empty()) symbolContent |= SymbolContent::Text;
if (allowVerticalPlacement && shapedTextOrientations.vertical) {
const float verticalPointLabelAngle = 90.0f;
verticalTextCollisionFeature = CollisionFeature(line(), anchor, shapedTextOrientations.vertical, textBoxScale_, textPadding, textPlacement, indexedFeature, overscaling, textRotation + verticalPointLabelAngle);
if (verticallyShapedIcon) {
verticalIconCollisionFeature = CollisionFeature(sharedData->line,
anchor,
verticallyShapedIcon,
iconBoxScale, iconPadding,
indexedFeature,
iconRotation + verticalPointLabelAngle);
}
}
rightJustifiedGlyphQuadsSize = sharedData->rightJustifiedGlyphQuads.size();
centerJustifiedGlyphQuadsSize = sharedData->centerJustifiedGlyphQuads.size();
leftJustifiedGlyphQuadsSize = sharedData->leftJustifiedGlyphQuads.size();
verticalGlyphQuadsSize = sharedData->verticalGlyphQuads.size();
if (rightJustifiedGlyphQuadsSize || centerJustifiedGlyphQuadsSize || leftJustifiedGlyphQuadsSize) {
writingModes |= WritingModeType::Horizontal;
}
if (verticalGlyphQuadsSize) {
writingModes |= WritingModeType::Vertical;
}
}
const GeometryCoordinates& SymbolInstance::line() const {
assert(sharedData);
return sharedData->line;
}
const SymbolQuads& SymbolInstance::rightJustifiedGlyphQuads() const {
assert(sharedData);
return sharedData->rightJustifiedGlyphQuads;
}
const SymbolQuads& SymbolInstance::leftJustifiedGlyphQuads() const {
assert(sharedData);
return sharedData->leftJustifiedGlyphQuads;
}
const SymbolQuads& SymbolInstance::centerJustifiedGlyphQuads() const {
assert(sharedData);
return sharedData->centerJustifiedGlyphQuads;
}
const SymbolQuads& SymbolInstance::verticalGlyphQuads() const {
assert(sharedData);
return sharedData->verticalGlyphQuads;
}
const optional<SymbolQuad>& SymbolInstance::iconQuad() const {
assert(sharedData);
return sharedData->iconQuad;
}
bool SymbolInstance::hasText() const {
return static_cast<bool>(symbolContent & SymbolContent::Text);
}
bool SymbolInstance::hasIcon() const {
return static_cast<bool>(symbolContent & SymbolContent::IconRGBA) || hasSdfIcon();
}
bool SymbolInstance::hasSdfIcon() const {
return static_cast<bool>(symbolContent & SymbolContent::IconSDF);
}
const optional<SymbolQuad>& SymbolInstance::verticalIconQuad() const {
assert(sharedData);
return sharedData->verticalIconQuad;
}
void SymbolInstance::releaseSharedData() {
sharedData.reset();
}
optional<size_t> SymbolInstance::getDefaultHorizontalPlacedTextIndex() const {
if (placedRightTextIndex) return placedRightTextIndex;
if (placedCenterTextIndex) return placedCenterTextIndex;
if (placedLeftTextIndex) return placedLeftTextIndex;
return nullopt;
}
} // namespace mbgl
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