e8657becc5
Implements 'icon-pitch-alignment' (issue #9345) Fixes issue #9456 (map-aligned point label regression)
665 lines
30 KiB
C++
665 lines
30 KiB
C++
#include <mbgl/layout/symbol_layout.hpp>
|
|
#include <mbgl/layout/merge_lines.hpp>
|
|
#include <mbgl/layout/clip_lines.hpp>
|
|
#include <mbgl/renderer/buckets/symbol_bucket.hpp>
|
|
#include <mbgl/style/filter_evaluator.hpp>
|
|
#include <mbgl/renderer/bucket_parameters.hpp>
|
|
#include <mbgl/renderer/layers/render_symbol_layer.hpp>
|
|
#include <mbgl/renderer/image_atlas.hpp>
|
|
#include <mbgl/style/layers/symbol_layer_impl.hpp>
|
|
#include <mbgl/text/get_anchors.hpp>
|
|
#include <mbgl/text/collision_tile.hpp>
|
|
#include <mbgl/text/shaping.hpp>
|
|
#include <mbgl/util/constants.hpp>
|
|
#include <mbgl/util/utf.hpp>
|
|
#include <mbgl/util/token.hpp>
|
|
#include <mbgl/util/std.hpp>
|
|
#include <mbgl/util/constants.hpp>
|
|
#include <mbgl/util/string.hpp>
|
|
#include <mbgl/util/i18n.hpp>
|
|
#include <mbgl/math/clamp.hpp>
|
|
#include <mbgl/math/minmax.hpp>
|
|
#include <mbgl/math/log2.hpp>
|
|
#include <mbgl/util/platform.hpp>
|
|
#include <mbgl/util/logging.hpp>
|
|
#include <mbgl/tile/geometry_tile_data.hpp>
|
|
|
|
#include <mapbox/polylabel.hpp>
|
|
|
|
namespace mbgl {
|
|
|
|
using namespace style;
|
|
|
|
template <class Property>
|
|
static bool has(const style::SymbolLayoutProperties::PossiblyEvaluated& layout) {
|
|
return layout.get<Property>().match(
|
|
[&] (const std::string& s) { return !s.empty(); },
|
|
[&] (const auto&) { return true; }
|
|
);
|
|
}
|
|
|
|
SymbolLayout::SymbolLayout(const BucketParameters& parameters,
|
|
const std::vector<const RenderLayer*>& layers,
|
|
std::unique_ptr<GeometryTileLayer> sourceLayer_,
|
|
ImageDependencies& imageDependencies,
|
|
GlyphDependencies& glyphDependencies)
|
|
: sourceLayer(std::move(sourceLayer_)),
|
|
bucketName(layers.at(0)->getID()),
|
|
overscaling(parameters.tileID.overscaleFactor()),
|
|
zoom(parameters.tileID.overscaledZ),
|
|
mode(parameters.mode),
|
|
pixelRatio(parameters.pixelRatio),
|
|
tileSize(util::tileSize * overscaling),
|
|
tilePixelRatio(float(util::EXTENT) / tileSize),
|
|
textSize(layers.at(0)->as<RenderSymbolLayer>()->impl().layout.get<TextSize>()),
|
|
iconSize(layers.at(0)->as<RenderSymbolLayer>()->impl().layout.get<IconSize>())
|
|
{
|
|
|
|
const SymbolLayer::Impl& leader = layers.at(0)->as<RenderSymbolLayer>()->impl();
|
|
|
|
layout = leader.layout.evaluate(PropertyEvaluationParameters(zoom));
|
|
|
|
if (layout.get<IconRotationAlignment>() == AlignmentType::Auto) {
|
|
if (layout.get<SymbolPlacement>() == SymbolPlacementType::Line) {
|
|
layout.get<IconRotationAlignment>() = AlignmentType::Map;
|
|
} else {
|
|
layout.get<IconRotationAlignment>() = AlignmentType::Viewport;
|
|
}
|
|
}
|
|
|
|
if (layout.get<TextRotationAlignment>() == AlignmentType::Auto) {
|
|
if (layout.get<SymbolPlacement>() == SymbolPlacementType::Line) {
|
|
layout.get<TextRotationAlignment>() = AlignmentType::Map;
|
|
} else {
|
|
layout.get<TextRotationAlignment>() = AlignmentType::Viewport;
|
|
}
|
|
}
|
|
|
|
// If unspecified `*-pitch-alignment` inherits `*-rotation-alignment`
|
|
if (layout.get<TextPitchAlignment>() == AlignmentType::Auto) {
|
|
layout.get<TextPitchAlignment>() = layout.get<TextRotationAlignment>();
|
|
}
|
|
if (layout.get<IconPitchAlignment>() == AlignmentType::Auto) {
|
|
layout.get<IconPitchAlignment>() = layout.get<IconRotationAlignment>();
|
|
}
|
|
|
|
const bool hasText = has<TextField>(layout) && !layout.get<TextFont>().empty();
|
|
const bool hasIcon = has<IconImage>(layout);
|
|
|
|
if (!hasText && !hasIcon) {
|
|
return;
|
|
}
|
|
|
|
for (const auto& layer : layers) {
|
|
layerPaintProperties.emplace(layer->getID(), std::make_pair(
|
|
layer->as<RenderSymbolLayer>()->iconPaintProperties(),
|
|
layer->as<RenderSymbolLayer>()->textPaintProperties()
|
|
));
|
|
}
|
|
|
|
// Determine glyph dependencies
|
|
const size_t featureCount = sourceLayer->featureCount();
|
|
for (size_t i = 0; i < featureCount; ++i) {
|
|
auto feature = sourceLayer->getFeature(i);
|
|
if (!leader.filter(feature->getType(), feature->getID(), [&] (const auto& key) { return feature->getValue(key); }))
|
|
continue;
|
|
|
|
SymbolFeature ft(std::move(feature));
|
|
|
|
ft.index = i;
|
|
|
|
auto getValue = [&ft](const std::string& key) -> std::string {
|
|
auto value = ft.getValue(key);
|
|
if (!value)
|
|
return std::string();
|
|
if (value->is<std::string>())
|
|
return value->get<std::string>();
|
|
if (value->is<bool>())
|
|
return value->get<bool>() ? "true" : "false";
|
|
if (value->is<int64_t>())
|
|
return util::toString(value->get<int64_t>());
|
|
if (value->is<uint64_t>())
|
|
return util::toString(value->get<uint64_t>());
|
|
if (value->is<double>())
|
|
return util::toString(value->get<double>());
|
|
return "null";
|
|
};
|
|
|
|
if (hasText) {
|
|
std::string u8string = layout.evaluate<TextField>(zoom, ft);
|
|
if (layout.get<TextField>().isConstant()) {
|
|
u8string = util::replaceTokens(u8string, getValue);
|
|
}
|
|
|
|
auto textTransform = layout.evaluate<TextTransform>(zoom, ft);
|
|
|
|
if (textTransform == TextTransformType::Uppercase) {
|
|
u8string = platform::uppercase(u8string);
|
|
} else if (textTransform == TextTransformType::Lowercase) {
|
|
u8string = platform::lowercase(u8string);
|
|
}
|
|
|
|
ft.text = applyArabicShaping(util::utf8_to_utf16::convert(u8string));
|
|
const bool canVerticalizeText = layout.get<TextRotationAlignment>() == AlignmentType::Map
|
|
&& layout.get<SymbolPlacement>() == SymbolPlacementType::Line
|
|
&& util::i18n::allowsVerticalWritingMode(*ft.text);
|
|
|
|
// Loop through all characters of this text and collect unique codepoints.
|
|
for (char16_t chr : *ft.text) {
|
|
glyphDependencies[layout.get<TextFont>()].insert(chr);
|
|
if (canVerticalizeText) {
|
|
if (char16_t verticalChr = util::i18n::verticalizePunctuation(chr)) {
|
|
glyphDependencies[layout.get<TextFont>()].insert(verticalChr);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (hasIcon) {
|
|
std::string icon = layout.evaluate<IconImage>(zoom, ft);
|
|
if (layout.get<IconImage>().isConstant()) {
|
|
icon = util::replaceTokens(icon, getValue);
|
|
}
|
|
ft.icon = icon;
|
|
imageDependencies.insert(*ft.icon);
|
|
}
|
|
|
|
if (ft.text || ft.icon) {
|
|
features.push_back(std::move(ft));
|
|
}
|
|
}
|
|
|
|
if (layout.get<SymbolPlacement>() == SymbolPlacementType::Line) {
|
|
util::mergeLines(features);
|
|
}
|
|
}
|
|
|
|
bool SymbolLayout::hasSymbolInstances() const {
|
|
return !symbolInstances.empty();
|
|
}
|
|
|
|
void SymbolLayout::prepare(const GlyphMap& glyphMap, const GlyphPositions& glyphPositions,
|
|
const ImageMap& imageMap, const ImagePositions& imagePositions) {
|
|
float horizontalAlign = 0.5;
|
|
float verticalAlign = 0.5;
|
|
|
|
switch (layout.get<TextAnchor>()) {
|
|
case TextAnchorType::Top:
|
|
case TextAnchorType::Bottom:
|
|
case TextAnchorType::Center:
|
|
break;
|
|
case TextAnchorType::Right:
|
|
case TextAnchorType::TopRight:
|
|
case TextAnchorType::BottomRight:
|
|
horizontalAlign = 1;
|
|
break;
|
|
case TextAnchorType::Left:
|
|
case TextAnchorType::TopLeft:
|
|
case TextAnchorType::BottomLeft:
|
|
horizontalAlign = 0;
|
|
break;
|
|
}
|
|
|
|
switch (layout.get<TextAnchor>()) {
|
|
case TextAnchorType::Left:
|
|
case TextAnchorType::Right:
|
|
case TextAnchorType::Center:
|
|
break;
|
|
case TextAnchorType::Bottom:
|
|
case TextAnchorType::BottomLeft:
|
|
case TextAnchorType::BottomRight:
|
|
verticalAlign = 1;
|
|
break;
|
|
case TextAnchorType::Top:
|
|
case TextAnchorType::TopLeft:
|
|
case TextAnchorType::TopRight:
|
|
verticalAlign = 0;
|
|
break;
|
|
}
|
|
|
|
const float justify = layout.get<TextJustify>() == TextJustifyType::Right ? 1 :
|
|
layout.get<TextJustify>() == TextJustifyType::Left ? 0 :
|
|
0.5;
|
|
|
|
const bool textAlongLine = layout.get<TextRotationAlignment>() == AlignmentType::Map &&
|
|
layout.get<SymbolPlacement>() == SymbolPlacementType::Line;
|
|
|
|
auto glyphMapIt = glyphMap.find(layout.get<TextFont>());
|
|
const Glyphs& glyphs = glyphMapIt != glyphMap.end()
|
|
? glyphMapIt->second : Glyphs();
|
|
|
|
auto glyphPositionsIt = glyphPositions.find(layout.get<TextFont>());
|
|
const GlyphPositionMap& glyphPositionMap = glyphPositionsIt != glyphPositions.end()
|
|
? glyphPositionsIt->second : GlyphPositionMap();
|
|
|
|
for (auto it = features.begin(); it != features.end(); ++it) {
|
|
auto& feature = *it;
|
|
if (feature.geometry.empty()) continue;
|
|
|
|
std::pair<Shaping, Shaping> shapedTextOrientations;
|
|
optional<PositionedIcon> shapedIcon;
|
|
|
|
// if feature has text, shape the text
|
|
if (feature.text) {
|
|
auto applyShaping = [&] (const std::u16string& text, WritingModeType writingMode) {
|
|
const float oneEm = 24.0f;
|
|
const Shaping result = getShaping(
|
|
/* string */ text,
|
|
/* maxWidth: ems */ layout.get<SymbolPlacement>() != SymbolPlacementType::Line ?
|
|
layout.get<TextMaxWidth>() * oneEm : 0,
|
|
/* lineHeight: ems */ layout.get<TextLineHeight>() * oneEm,
|
|
/* horizontalAlign */ horizontalAlign,
|
|
/* verticalAlign */ verticalAlign,
|
|
/* justify */ justify,
|
|
/* spacing: ems */ util::i18n::allowsLetterSpacing(*feature.text) ? layout.get<TextLetterSpacing>() * oneEm : 0.0f,
|
|
/* translate */ Point<float>(layout.evaluate<TextOffset>(zoom, feature)[0] * oneEm, layout.evaluate<TextOffset>(zoom, feature)[1] * oneEm),
|
|
/* verticalHeight */ oneEm,
|
|
/* writingMode */ writingMode,
|
|
/* bidirectional algorithm object */ bidi,
|
|
/* glyphs */ glyphs);
|
|
|
|
return result;
|
|
};
|
|
|
|
shapedTextOrientations.first = applyShaping(*feature.text, WritingModeType::Horizontal);
|
|
|
|
if (util::i18n::allowsVerticalWritingMode(*feature.text) && textAlongLine) {
|
|
shapedTextOrientations.second = applyShaping(util::i18n::verticalizePunctuation(*feature.text), WritingModeType::Vertical);
|
|
}
|
|
}
|
|
|
|
// if feature has icon, get sprite atlas position
|
|
if (feature.icon) {
|
|
auto image = imageMap.find(*feature.icon);
|
|
if (image != imageMap.end()) {
|
|
shapedIcon = PositionedIcon::shapeIcon(
|
|
imagePositions.at(*feature.icon),
|
|
layout.evaluate<IconOffset>(zoom, feature),
|
|
layout.evaluate<IconRotate>(zoom, feature) * util::DEG2RAD);
|
|
if (image->second->sdf) {
|
|
sdfIcons = true;
|
|
}
|
|
if (image->second->pixelRatio != pixelRatio) {
|
|
iconsNeedLinear = true;
|
|
} else if (layout.get<IconRotate>().constantOr(1) != 0) {
|
|
iconsNeedLinear = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// if either shapedText or icon position is present, add the feature
|
|
if (shapedTextOrientations.first || shapedIcon) {
|
|
addFeature(std::distance(features.begin(), it), feature, shapedTextOrientations, shapedIcon, glyphPositionMap);
|
|
}
|
|
|
|
feature.geometry.clear();
|
|
}
|
|
|
|
compareText.clear();
|
|
}
|
|
|
|
void SymbolLayout::addFeature(const std::size_t index,
|
|
const SymbolFeature& feature,
|
|
const std::pair<Shaping, Shaping>& shapedTextOrientations,
|
|
optional<PositionedIcon> shapedIcon,
|
|
const GlyphPositionMap& glyphPositionMap) {
|
|
const float minScale = 0.5f;
|
|
const float glyphSize = 24.0f;
|
|
|
|
const float layoutTextSize = layout.evaluate<TextSize>(zoom + 1, feature);
|
|
const float layoutIconSize = layout.evaluate<IconSize>(zoom + 1, feature);
|
|
const std::array<float, 2> textOffset = layout.evaluate<TextOffset>(zoom, feature);
|
|
const std::array<float, 2> iconOffset = layout.evaluate<IconOffset>(zoom, feature);
|
|
|
|
// To reduce the number of labels that jump around when zooming we need
|
|
// to use a text-size value that is the same for all zoom levels.
|
|
// This calculates text-size at a high zoom level so that all tiles can
|
|
// use the same value when calculating anchor positions.
|
|
const float textMaxSize = layout.evaluate<TextSize>(18, feature);
|
|
|
|
const float fontScale = layoutTextSize / glyphSize;
|
|
const float textBoxScale = tilePixelRatio * fontScale;
|
|
const float textMaxBoxScale = tilePixelRatio * textMaxSize / glyphSize;
|
|
const float iconBoxScale = tilePixelRatio * layoutIconSize;
|
|
const float symbolSpacing = tilePixelRatio * layout.get<SymbolSpacing>();
|
|
const bool avoidEdges = layout.get<SymbolAvoidEdges>() && layout.get<SymbolPlacement>() != SymbolPlacementType::Line;
|
|
const float textPadding = layout.get<TextPadding>() * tilePixelRatio;
|
|
const float iconPadding = layout.get<IconPadding>() * tilePixelRatio;
|
|
const float textMaxAngle = layout.get<TextMaxAngle>() * util::DEG2RAD;
|
|
const SymbolPlacementType textPlacement = layout.get<TextRotationAlignment>() != AlignmentType::Map
|
|
? SymbolPlacementType::Point
|
|
: layout.get<SymbolPlacement>();
|
|
const SymbolPlacementType iconPlacement = layout.get<IconRotationAlignment>() != AlignmentType::Map
|
|
? SymbolPlacementType::Point
|
|
: layout.get<SymbolPlacement>();
|
|
const float textRepeatDistance = symbolSpacing / 2;
|
|
IndexedSubfeature indexedFeature = { feature.index, sourceLayer->getName(), bucketName,
|
|
symbolInstances.size() };
|
|
|
|
auto addSymbolInstance = [&] (const GeometryCoordinates& line, Anchor& anchor) {
|
|
// https://github.com/mapbox/vector-tile-spec/tree/master/2.1#41-layers
|
|
// +-------------------+ Symbols with anchors located on tile edges
|
|
// |(0,0) || are duplicated on neighbor tiles.
|
|
// | ||
|
|
// | || In continuous mode, to avoid overdraw we
|
|
// | || skip symbols located on the extent edges.
|
|
// | Tile || In still mode, we include the features in
|
|
// | || the buffers for both tiles and clip them
|
|
// | || at draw time.
|
|
// | ||
|
|
// +-------------------| In this scenario, the inner bounding box
|
|
// +-------------------+ is called 'withinPlus0', and the outer
|
|
// (extent,extent) is called 'inside'.
|
|
const bool withinPlus0 = anchor.point.x >= 0 && anchor.point.x < util::EXTENT && anchor.point.y >= 0 && anchor.point.y < util::EXTENT;
|
|
const bool inside = withinPlus0 || anchor.point.x == util::EXTENT || anchor.point.y == util::EXTENT;
|
|
|
|
if (avoidEdges && !inside) return;
|
|
|
|
const bool addToBuffers = mode == MapMode::Still || withinPlus0;
|
|
|
|
symbolInstances.emplace_back(anchor, line, shapedTextOrientations, shapedIcon,
|
|
layout.evaluate(zoom, feature), layoutTextSize,
|
|
addToBuffers, symbolInstances.size(),
|
|
textBoxScale, textPadding, textPlacement, textOffset,
|
|
iconBoxScale, iconPadding, iconPlacement, iconOffset,
|
|
glyphPositionMap, indexedFeature, index);
|
|
};
|
|
|
|
const auto& type = feature.getType();
|
|
|
|
if (layout.get<SymbolPlacement>() == SymbolPlacementType::Line) {
|
|
auto clippedLines = util::clipLines(feature.geometry, 0, 0, util::EXTENT, util::EXTENT);
|
|
for (const auto& line : clippedLines) {
|
|
Anchors anchors = getAnchors(line,
|
|
symbolSpacing,
|
|
textMaxAngle,
|
|
(shapedTextOrientations.second ?: shapedTextOrientations.first).left,
|
|
(shapedTextOrientations.second ?: shapedTextOrientations.first).right,
|
|
(shapedIcon ? shapedIcon->left() : 0),
|
|
(shapedIcon ? shapedIcon->right() : 0),
|
|
glyphSize,
|
|
textMaxBoxScale,
|
|
overscaling);
|
|
|
|
for (auto& anchor : anchors) {
|
|
if (!feature.text || !anchorIsTooClose(*feature.text, textRepeatDistance, anchor)) {
|
|
addSymbolInstance(line, anchor);
|
|
}
|
|
}
|
|
}
|
|
} else if (type == FeatureType::Polygon) {
|
|
for (const auto& polygon : classifyRings(feature.geometry)) {
|
|
Polygon<double> poly;
|
|
for (const auto& ring : polygon) {
|
|
LinearRing<double> r;
|
|
for (const auto& p : ring) {
|
|
r.push_back(convertPoint<double>(p));
|
|
}
|
|
poly.push_back(r);
|
|
}
|
|
|
|
// 1 pixel worth of precision, in tile coordinates
|
|
auto poi = mapbox::polylabel(poly, double(util::EXTENT / util::tileSize));
|
|
Anchor anchor(poi.x, poi.y, 0, minScale);
|
|
addSymbolInstance(polygon[0], anchor);
|
|
}
|
|
} else if (type == FeatureType::LineString) {
|
|
for (const auto& line : feature.geometry) {
|
|
Anchor anchor(line[0].x, line[0].y, 0, minScale);
|
|
addSymbolInstance(line, anchor);
|
|
}
|
|
} else if (type == FeatureType::Point) {
|
|
for (const auto& points : feature.geometry) {
|
|
for (const auto& point : points) {
|
|
Anchor anchor(point.x, point.y, 0, minScale);
|
|
addSymbolInstance({point}, anchor);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool SymbolLayout::anchorIsTooClose(const std::u16string& text, const float repeatDistance, const Anchor& anchor) {
|
|
if (compareText.find(text) == compareText.end()) {
|
|
compareText.emplace(text, Anchors());
|
|
} else {
|
|
auto otherAnchors = compareText.find(text)->second;
|
|
for (const Anchor& otherAnchor : otherAnchors) {
|
|
if (util::dist<float>(anchor.point, otherAnchor.point) < repeatDistance) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
compareText[text].push_back(anchor);
|
|
return false;
|
|
}
|
|
|
|
std::unique_ptr<SymbolBucket> SymbolLayout::place(CollisionTile& collisionTile) {
|
|
auto bucket = std::make_unique<SymbolBucket>(layout, layerPaintProperties, textSize, iconSize, zoom, sdfIcons, iconsNeedLinear);
|
|
|
|
// Calculate which labels can be shown and when they can be shown and
|
|
// create the bufers used for rendering.
|
|
|
|
const SymbolPlacementType textPlacement = layout.get<TextRotationAlignment>() != AlignmentType::Map
|
|
? SymbolPlacementType::Point
|
|
: layout.get<SymbolPlacement>();
|
|
const SymbolPlacementType iconPlacement = layout.get<IconRotationAlignment>() != AlignmentType::Map
|
|
? SymbolPlacementType::Point
|
|
: layout.get<SymbolPlacement>();
|
|
|
|
const bool mayOverlap = layout.get<TextAllowOverlap>() || layout.get<IconAllowOverlap>() ||
|
|
layout.get<TextIgnorePlacement>() || layout.get<IconIgnorePlacement>();
|
|
|
|
const bool keepUpright = layout.get<TextKeepUpright>();
|
|
|
|
// Sort symbols by their y position on the canvas so that they lower symbols
|
|
// are drawn on top of higher symbols.
|
|
// Don't sort symbols that won't overlap because it isn't necessary and
|
|
// because it causes more labels to pop in and out when rotating.
|
|
if (mayOverlap) {
|
|
const float sin = std::sin(collisionTile.config.angle);
|
|
const float cos = std::cos(collisionTile.config.angle);
|
|
|
|
std::sort(symbolInstances.begin(), symbolInstances.end(), [sin, cos](SymbolInstance &a, SymbolInstance &b) {
|
|
const int32_t aRotated = sin * a.anchor.point.x + cos * a.anchor.point.y;
|
|
const int32_t bRotated = sin * b.anchor.point.x + cos * b.anchor.point.y;
|
|
return aRotated != bRotated ?
|
|
aRotated < bRotated :
|
|
a.index > b.index;
|
|
});
|
|
}
|
|
|
|
for (SymbolInstance &symbolInstance : symbolInstances) {
|
|
|
|
const bool hasText = symbolInstance.hasText;
|
|
const bool hasIcon = symbolInstance.hasIcon;
|
|
|
|
const bool iconWithoutText = layout.get<TextOptional>() || !hasText;
|
|
const bool textWithoutIcon = layout.get<IconOptional>() || !hasIcon;
|
|
|
|
// Calculate the scales at which the text and icon can be placed without collision.
|
|
|
|
float glyphScale = hasText ?
|
|
collisionTile.placeFeature(symbolInstance.textCollisionFeature,
|
|
layout.get<TextAllowOverlap>(), layout.get<SymbolAvoidEdges>()) :
|
|
collisionTile.minScale;
|
|
float iconScale = hasIcon ?
|
|
collisionTile.placeFeature(symbolInstance.iconCollisionFeature,
|
|
layout.get<IconAllowOverlap>(), layout.get<SymbolAvoidEdges>()) :
|
|
collisionTile.minScale;
|
|
|
|
|
|
// Combine the scales for icons and text.
|
|
|
|
if (!iconWithoutText && !textWithoutIcon) {
|
|
iconScale = glyphScale = util::max(iconScale, glyphScale);
|
|
} else if (!textWithoutIcon && glyphScale) {
|
|
glyphScale = util::max(iconScale, glyphScale);
|
|
} else if (!iconWithoutText && iconScale) {
|
|
iconScale = util::max(iconScale, glyphScale);
|
|
}
|
|
|
|
const auto& feature = features.at(symbolInstance.featureIndex);
|
|
|
|
// Insert final placement into collision tree and add glyphs/icons to buffers
|
|
|
|
if (hasText) {
|
|
const float placementZoom = util::max(util::log2(glyphScale) + zoom, 0.0f);
|
|
collisionTile.insertFeature(symbolInstance.textCollisionFeature, glyphScale, layout.get<TextIgnorePlacement>());
|
|
if (glyphScale < collisionTile.maxScale) {
|
|
|
|
const float labelAngle = std::fmod((symbolInstance.anchor.angle + collisionTile.config.angle) + 2 * M_PI, 2 * M_PI);
|
|
const bool inVerticalRange = (
|
|
(labelAngle > M_PI * 1.0 / 4.0 && labelAngle <= M_PI * 3.0 / 4) ||
|
|
(labelAngle > M_PI * 5.0 / 4.0 && labelAngle <= M_PI * 7.0 / 4));
|
|
const bool useVerticalMode = symbolInstance.writingModes & WritingModeType::Vertical && inVerticalRange;
|
|
|
|
const Range<float> sizeData = bucket->textSizeBinder->getVertexSizeData(feature);
|
|
bucket->text.placedSymbols.emplace_back(symbolInstance.anchor.point, symbolInstance.anchor.segment, sizeData.min, sizeData.max,
|
|
symbolInstance.textOffset, placementZoom, useVerticalMode, symbolInstance.line);
|
|
|
|
for (const auto& symbol : symbolInstance.glyphQuads) {
|
|
addSymbol(
|
|
bucket->text, sizeData, symbol, placementZoom,
|
|
keepUpright, textPlacement, symbolInstance.anchor, bucket->text.placedSymbols.back());
|
|
}
|
|
}
|
|
}
|
|
|
|
if (hasIcon) {
|
|
const float placementZoom = util::max(util::log2(iconScale) + zoom, 0.0f);
|
|
collisionTile.insertFeature(symbolInstance.iconCollisionFeature, iconScale, layout.get<IconIgnorePlacement>());
|
|
if (iconScale < collisionTile.maxScale && symbolInstance.iconQuad) {
|
|
const Range<float> sizeData = bucket->iconSizeBinder->getVertexSizeData(feature);
|
|
bucket->icon.placedSymbols.emplace_back(symbolInstance.anchor.point, symbolInstance.anchor.segment, sizeData.min, sizeData.max,
|
|
symbolInstance.iconOffset, placementZoom, false, symbolInstance.line);
|
|
addSymbol(
|
|
bucket->icon, sizeData, *symbolInstance.iconQuad, placementZoom,
|
|
keepUpright, iconPlacement, symbolInstance.anchor, bucket->icon.placedSymbols.back());
|
|
}
|
|
}
|
|
|
|
for (auto& pair : bucket->paintPropertyBinders) {
|
|
pair.second.first.populateVertexVectors(feature, bucket->icon.vertices.vertexSize());
|
|
pair.second.second.populateVertexVectors(feature, bucket->text.vertices.vertexSize());
|
|
}
|
|
}
|
|
|
|
if (collisionTile.config.debug) {
|
|
addToDebugBuffers(collisionTile, *bucket);
|
|
}
|
|
|
|
return bucket;
|
|
}
|
|
|
|
template <typename Buffer>
|
|
void SymbolLayout::addSymbol(Buffer& buffer,
|
|
const Range<float> sizeData,
|
|
const SymbolQuad& symbol,
|
|
const float placementZoom,
|
|
const bool keepUpright,
|
|
const style::SymbolPlacementType placement,
|
|
const Anchor& labelAnchor,
|
|
PlacedSymbol& placedSymbol) {
|
|
constexpr const uint16_t vertexLength = 4;
|
|
|
|
const auto &tl = symbol.tl;
|
|
const auto &tr = symbol.tr;
|
|
const auto &bl = symbol.bl;
|
|
const auto &br = symbol.br;
|
|
const auto &tex = symbol.tex;
|
|
|
|
if (placement == style::SymbolPlacementType::Line && keepUpright) {
|
|
// drop incorrectly oriented glyphs
|
|
if ((symbol.writingMode == WritingModeType::Vertical) != placedSymbol.useVerticalMode) return;
|
|
}
|
|
|
|
if (buffer.segments.empty() || buffer.segments.back().vertexLength + vertexLength > std::numeric_limits<uint16_t>::max()) {
|
|
buffer.segments.emplace_back(buffer.vertices.vertexSize(), buffer.triangles.indexSize());
|
|
}
|
|
|
|
// We're generating triangle fans, so we always start with the first
|
|
// coordinate in this polygon.
|
|
auto& segment = buffer.segments.back();
|
|
assert(segment.vertexLength <= std::numeric_limits<uint16_t>::max());
|
|
uint16_t index = segment.vertexLength;
|
|
|
|
// coordinates (2 triangles)
|
|
buffer.vertices.emplace_back(SymbolLayoutAttributes::vertex(labelAnchor.point, tl, symbol.glyphOffset.y, tex.x, tex.y, sizeData));
|
|
buffer.vertices.emplace_back(SymbolLayoutAttributes::vertex(labelAnchor.point, tr, symbol.glyphOffset.y, tex.x + tex.w, tex.y, sizeData));
|
|
buffer.vertices.emplace_back(SymbolLayoutAttributes::vertex(labelAnchor.point, bl, symbol.glyphOffset.y, tex.x, tex.y + tex.h, sizeData));
|
|
buffer.vertices.emplace_back(SymbolLayoutAttributes::vertex(labelAnchor.point, br, symbol.glyphOffset.y, tex.x + tex.w, tex.y + tex.h, sizeData));
|
|
|
|
auto dynamicVertex = SymbolDynamicLayoutAttributes::vertex(labelAnchor.point, 0, placementZoom);
|
|
buffer.dynamicVertices.emplace_back(dynamicVertex);
|
|
buffer.dynamicVertices.emplace_back(dynamicVertex);
|
|
buffer.dynamicVertices.emplace_back(dynamicVertex);
|
|
buffer.dynamicVertices.emplace_back(dynamicVertex);
|
|
|
|
// add the two triangles, referencing the four coordinates we just inserted.
|
|
buffer.triangles.emplace_back(index + 0, index + 1, index + 2);
|
|
buffer.triangles.emplace_back(index + 1, index + 2, index + 3);
|
|
|
|
segment.vertexLength += vertexLength;
|
|
segment.indexLength += 6;
|
|
|
|
placedSymbol.glyphOffsets.push_back(symbol.glyphOffset.x);
|
|
}
|
|
|
|
void SymbolLayout::addToDebugBuffers(CollisionTile& collisionTile, SymbolBucket& bucket) {
|
|
|
|
if (!hasSymbolInstances()) {
|
|
return;
|
|
}
|
|
|
|
const float yStretch = collisionTile.yStretch;
|
|
|
|
auto& collisionBox = bucket.collisionBox;
|
|
|
|
for (const SymbolInstance &symbolInstance : symbolInstances) {
|
|
auto populateCollisionBox = [&](const auto& feature) {
|
|
for (const CollisionBox &box : feature.boxes) {
|
|
auto& anchor = box.anchor;
|
|
|
|
Point<float> tl{box.x1, box.y1 * yStretch};
|
|
Point<float> tr{box.x2, box.y1 * yStretch};
|
|
Point<float> bl{box.x1, box.y2 * yStretch};
|
|
Point<float> br{box.x2, box.y2 * yStretch};
|
|
tl = util::matrixMultiply(collisionTile.reverseRotationMatrix, tl);
|
|
tr = util::matrixMultiply(collisionTile.reverseRotationMatrix, tr);
|
|
bl = util::matrixMultiply(collisionTile.reverseRotationMatrix, bl);
|
|
br = util::matrixMultiply(collisionTile.reverseRotationMatrix, br);
|
|
|
|
const float maxZoom = util::clamp(zoom + util::log2(box.maxScale), util::MIN_ZOOM_F, util::MAX_ZOOM_F);
|
|
const float placementZoom = util::clamp(zoom + util::log2(box.placementScale), util::MIN_ZOOM_F, util::MAX_ZOOM_F);
|
|
|
|
static constexpr std::size_t vertexLength = 4;
|
|
static constexpr std::size_t indexLength = 8;
|
|
|
|
if (collisionBox.segments.empty() || collisionBox.segments.back().vertexLength + vertexLength > std::numeric_limits<uint16_t>::max()) {
|
|
collisionBox.segments.emplace_back(collisionBox.vertices.vertexSize(), collisionBox.lines.indexSize());
|
|
}
|
|
|
|
auto& segment = collisionBox.segments.back();
|
|
uint16_t index = segment.vertexLength;
|
|
|
|
collisionBox.vertices.emplace_back(CollisionBoxProgram::vertex(anchor, symbolInstance.anchor.point, tl, maxZoom, placementZoom));
|
|
collisionBox.vertices.emplace_back(CollisionBoxProgram::vertex(anchor, symbolInstance.anchor.point, tr, maxZoom, placementZoom));
|
|
collisionBox.vertices.emplace_back(CollisionBoxProgram::vertex(anchor, symbolInstance.anchor.point, br, maxZoom, placementZoom));
|
|
collisionBox.vertices.emplace_back(CollisionBoxProgram::vertex(anchor, symbolInstance.anchor.point, bl, maxZoom, placementZoom));
|
|
|
|
collisionBox.lines.emplace_back(index + 0, index + 1);
|
|
collisionBox.lines.emplace_back(index + 1, index + 2);
|
|
collisionBox.lines.emplace_back(index + 2, index + 3);
|
|
collisionBox.lines.emplace_back(index + 3, index + 0);
|
|
|
|
segment.vertexLength += vertexLength;
|
|
segment.indexLength += indexLength;
|
|
}
|
|
};
|
|
populateCollisionBox(symbolInstance.textCollisionFeature);
|
|
populateCollisionBox(symbolInstance.iconCollisionFeature);
|
|
}
|
|
}
|
|
|
|
} // namespace mbgl
|