void SymbolBucket::addFeatures(const GeometryTileLayer& layer,
const FilterExpression& filter,
uintptr_t tileUID,
SpriteAtlas& spriteAtlas,
Sprite& sprite,
GlyphAtlas& glyphAtlas,
GlyphStore& glyphStore) {
const std::vector<SymbolFeature> features = processFeatures(layer, filter, glyphStore);
// Stop if we still need glyphs because the
// bucket will be discarded.
if (needsGlyphs()) {
return;
}
float horizontalAlign = 0.5;
float verticalAlign = 0.5;
switch (layout.text.anchor) {
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.text.anchor) {
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;
}
float justify = 0.5;
if (layout.text.justify == TextJustifyType::Right) justify = 1;
else if (layout.text.justify == TextJustifyType::Left) justify = 0;
auto* fontStack = glyphStore.getFontStack(layout.text.font);
for (const auto& feature : features) {
if (!feature.geometry.size()) continue;
Shaping shaping;
Rect<uint16_t> image;
GlyphPositions face;
// if feature has text, shape the text
if (feature.label.length()) {
shaping = fontStack->getShaping(
/* string */ feature.label,
/* maxWidth: ems */ layout.placement != PlacementType::Line ?
layout.text.max_width * 24 : 0,
/* lineHeight: ems */ layout.text.line_height * 24,
/* horizontalAlign */ horizontalAlign,
/* verticalAlign */ verticalAlign,
/* justify */ justify,
/* spacing: ems */ layout.text.letter_spacing * 24,
/* translate */ vec2<float>(layout.text.offset[0], layout.text.offset[1]));
// Add the glyphs we need for this label to the glyph atlas.
if (shaping.size()) {
glyphAtlas.addGlyphs(tileUID, feature.label, layout.text.font, *fontStack, face);
}
}
// if feature has icon, get sprite atlas position
if (feature.sprite.length()) {
image = spriteAtlas.getImage(feature.sprite, false);
if (sprite.getSpritePosition(feature.sprite).sdf) {
sdfIcons = true;
}
}
// if either shaping or icon position is present, add the feature
if (shaping.size() || image.hasArea()) {
for (const auto& line : feature.geometry) {
if (line.size()) {
addFeature(line, shaping, face, image);
}
}
}
}
}
void SymbolBucket::addFeatures(uintptr_t tileUID,
SpriteAtlas& spriteAtlas,
GlyphAtlas& glyphAtlas,
GlyphStore& glyphStore) {
float horizontalAlign = 0.5;
float verticalAlign = 0.5;
switch (layout.text.anchor) {
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.text.anchor) {
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.text.justify == TextJustifyType::Right ? 1 :
layout.text.justify == TextJustifyType::Left ? 0 :
0.5;
auto fontStack = glyphStore.getFontStack(layout.text.font);
for (const auto& feature : features) {
if (feature.geometry.empty()) continue;
Shaping shapedText;
PositionedIcon shapedIcon;
GlyphPositions face;
// if feature has text, shape the text
if (feature.label.length()) {
shapedText = fontStack->getShaping(
/* string */ feature.label,
/* maxWidth: ems */ layout.placement != PlacementType::Line ?
layout.text.maxWidth * 24 : 0,
/* lineHeight: ems */ layout.text.lineHeight * 24,
/* horizontalAlign */ horizontalAlign,
/* verticalAlign */ verticalAlign,
/* justify */ justify,
/* spacing: ems */ layout.text.letterSpacing * 24,
/* translate */ vec2<float>(layout.text.offset.value[0], layout.text.offset.value[1]));
// Add the glyphs we need for this label to the glyph atlas.
if (shapedText) {
glyphAtlas.addGlyphs(tileUID, feature.label, layout.text.font, **fontStack, face);
}
}
// if feature has icon, get sprite atlas position
if (feature.sprite.length()) {
auto image = spriteAtlas.getImage(feature.sprite, false);
if (image) {
shapedIcon = shapeIcon(*image, layout);
assert((*image).spriteImage);
if ((*image).spriteImage->sdf) {
sdfIcons = true;
}
if ((*image).relativePixelRatio != 1.0f) {
iconsNeedLinear = true;
}
}
}
// if either shapedText or icon position is present, add the feature
if (shapedText || shapedIcon) {
addFeature(feature.geometry, shapedText, shapedIcon, face);
}
}
features.clear();
}