CollisionFeature::CollisionFeature(const std::vector<Coordinate> &line, const Anchor &anchor,
const float top, const float bottom, const float left, const float right,
const float boxScale, const float padding, const bool alongLine, const bool straight) {
if (top == 0 && bottom == 0 && left == 0 && right == 0) return;
const float y1 = top * boxScale - padding;
const float y2 = bottom * boxScale + padding;
const float x1 = left * boxScale - padding;
const float x2 = right * boxScale + padding;
if (alongLine) {
float height = y2 - y1;
const float length = x2 - x1;
if (height <= 0.0f) return;
height = std::max(10.0f * boxScale, height);
Coordinate anchorPoint(int16_t(anchor.x), int16_t(anchor.y));
if (straight) {
// used for icon labels that are aligned with the line, but don't curve along it
const vec2<double> vector = util::unit(vec2<double>(line[anchor.segment + 1] - line[anchor.segment])) * length;
const std::vector<Coordinate> newLine({ anchorPoint - vector, anchorPoint + vector });
bboxifyLabel(newLine, anchorPoint, 0, length, height);
} else {
// used for text labels that curve along a line
bboxifyLabel(line, anchorPoint, anchor.segment, length, height);
}
} else {
boxes.emplace_back(anchor, x1, y1, x2, y2, std::numeric_limits<float>::infinity());
}
}
CollisionFeature::CollisionFeature(const GeometryCoordinates& line,
const Anchor& anchor,
const float top,
const float bottom,
const float left,
const float right,
const float boxScale,
const float padding,
const style::SymbolPlacementType placement,
IndexedSubfeature indexedFeature_,
const float overscaling)
: indexedFeature(std::move(indexedFeature_))
, alongLine(placement == style::SymbolPlacementType::Line) {
if (top == 0 && bottom == 0 && left == 0 && right == 0) return;
const float y1 = top * boxScale - padding;
const float y2 = bottom * boxScale + padding;
const float x1 = left * boxScale - padding;
const float x2 = right * boxScale + padding;
if (alongLine) {
float height = y2 - y1;
const double length = x2 - x1;
if (height <= 0.0f) return;
height = std::max(10.0f * boxScale, height);
GeometryCoordinate anchorPoint = convertPoint<int16_t>(anchor.point);
bboxifyLabel(line, anchorPoint, anchor.segment, length, height, overscaling);
} else {
boxes.emplace_back(anchor.point, Point<float>{ 0, 0 }, x1, y1, x2, y2);
}
}
CollisionFeature::CollisionFeature(const GeometryCoordinates &line, const Anchor &anchor,
const float top, const float bottom, const float left, const float right,
const float boxScale, const float padding, const style::SymbolPlacementType placement, IndexedSubfeature indexedFeature_,
const bool straight)
: indexedFeature(std::move(indexedFeature_)) {
if (top == 0 && bottom == 0 && left == 0 && right == 0) return;
const float y1 = top * boxScale - padding;
const float y2 = bottom * boxScale + padding;
const float x1 = left * boxScale - padding;
const float x2 = right * boxScale + padding;
if (placement == style::SymbolPlacementType::Line) {
float height = y2 - y1;
const double length = x2 - x1;
if (height <= 0.0f) return;
height = std::max(10.0f * boxScale, height);
GeometryCoordinate anchorPoint = convertPoint<int16_t>(anchor.point);
if (straight) {
// used for icon labels that are aligned with the line, but don't curve along it
const GeometryCoordinate vector = convertPoint<int16_t>(util::unit(convertPoint<double>(line[anchor.segment + 1] - line[anchor.segment])) * length);
const GeometryCoordinates newLine({ anchorPoint - vector, anchorPoint + vector });
bboxifyLabel(newLine, anchorPoint, 0, length, height);
} else {
// used for text labels that curve along a line
bboxifyLabel(line, anchorPoint, anchor.segment, length, height);
}
} else {
boxes.emplace_back(anchor.point, x1, y1, x2, y2, std::numeric_limits<float>::infinity());
}
}