90 lines
3.2 KiB
C++
90 lines
3.2 KiB
C++
#include <mbgl/layer/line_layer.hpp>
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#include <mbgl/style/style_bucket_parameters.hpp>
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#include <mbgl/renderer/line_bucket.hpp>
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#include <mbgl/map/tile_id.hpp>
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#include <mbgl/util/get_geometries.hpp>
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namespace mbgl {
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std::unique_ptr<StyleLayer> LineLayer::clone() const {
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return std::make_unique<LineLayer>(*this);
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}
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void LineLayer::parseLayout(const JSValue& value) {
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layout.cap.parse("line-cap", value);
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layout.join.parse("line-join", value);
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layout.miterLimit.parse("line-miter-limit", value);
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layout.roundLimit.parse("line-round-limit", value);
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}
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void LineLayer::parsePaints(const JSValue& layer) {
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paint.opacity.parse("line-opacity", layer);
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paint.color.parse("line-color", layer);
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paint.translate.parse("line-translate", layer);
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paint.translateAnchor.parse("line-translate-anchor", layer);
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paint.width.parse("line-width", layer);
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paint.gapWidth.parse("line-gap-width", layer);
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paint.offset.parse("line-offset", layer);
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paint.blur.parse("line-blur", layer);
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paint.dasharray.parse("line-dasharray", layer);
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paint.pattern.parse("line-pattern", layer);
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}
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void LineLayer::cascade(const StyleCascadeParameters& parameters) {
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paint.opacity.cascade(parameters);
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paint.color.cascade(parameters);
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paint.translate.cascade(parameters);
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paint.translateAnchor.cascade(parameters);
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paint.width.cascade(parameters);
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paint.gapWidth.cascade(parameters);
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paint.offset.cascade(parameters);
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paint.blur.cascade(parameters);
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paint.dasharray.cascade(parameters);
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paint.pattern.cascade(parameters);
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}
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bool LineLayer::recalculate(const StyleCalculationParameters& parameters) {
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// for scaling dasharrays
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StyleCalculationParameters dashArrayParams = parameters;
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dashArrayParams.z = std::floor(dashArrayParams.z);
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paint.width.calculate(dashArrayParams);
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paint.dashLineWidth = paint.width;
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bool hasTransitions = false;
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hasTransitions |= paint.opacity.calculate(parameters);
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hasTransitions |= paint.color.calculate(parameters);
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hasTransitions |= paint.translate.calculate(parameters);
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hasTransitions |= paint.translateAnchor.calculate(parameters);
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hasTransitions |= paint.width.calculate(parameters);
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hasTransitions |= paint.gapWidth.calculate(parameters);
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hasTransitions |= paint.offset.calculate(parameters);
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hasTransitions |= paint.blur.calculate(parameters);
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hasTransitions |= paint.dasharray.calculate(parameters);
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hasTransitions |= paint.pattern.calculate(parameters);
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passes = paint.isVisible() ? RenderPass::Translucent : RenderPass::None;
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return hasTransitions;
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}
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std::unique_ptr<Bucket> LineLayer::createBucket(StyleBucketParameters& parameters) const {
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auto bucket = std::make_unique<LineBucket>(parameters.tileID.overscaleFactor());
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bucket->layout = layout;
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StyleCalculationParameters p(parameters.tileID.z);
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bucket->layout.cap.calculate(p);
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bucket->layout.join.calculate(p);
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bucket->layout.miterLimit.calculate(p);
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bucket->layout.roundLimit.calculate(p);
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parameters.eachFilteredFeature(filter, [&] (const auto& feature) {
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bucket->addGeometry(getGeometries(feature));
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});
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return std::move(bucket);
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}
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} // namespace mbgl
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