diff options
Diffstat (limited to 'src/mbgl/renderer/layers/render_circle_layer.cpp')
-rw-r--r-- | src/mbgl/renderer/layers/render_circle_layer.cpp | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/src/mbgl/renderer/layers/render_circle_layer.cpp b/src/mbgl/renderer/layers/render_circle_layer.cpp new file mode 100644 index 0000000000..e7b022f3ee --- /dev/null +++ b/src/mbgl/renderer/layers/render_circle_layer.cpp @@ -0,0 +1,120 @@ +#include <mbgl/renderer/layers/render_circle_layer.hpp> +#include <mbgl/renderer/buckets/circle_bucket.hpp> +#include <mbgl/renderer/render_tile.hpp> +#include <mbgl/renderer/paint_parameters.hpp> +#include <mbgl/programs/programs.hpp> +#include <mbgl/programs/circle_program.hpp> +#include <mbgl/tile/tile.hpp> +#include <mbgl/style/layers/circle_layer_impl.hpp> +#include <mbgl/geometry/feature_index.hpp> +#include <mbgl/util/math.hpp> +#include <mbgl/util/intersection_tests.hpp> + +namespace mbgl { + +using namespace style; + +RenderCircleLayer::RenderCircleLayer(Immutable<style::CircleLayer::Impl> _impl) + : RenderLayer(style::LayerType::Circle, _impl), + unevaluated(impl().paint.untransitioned()) { +} + +const style::CircleLayer::Impl& RenderCircleLayer::impl() const { + return static_cast<const style::CircleLayer::Impl&>(*baseImpl); +} + +std::unique_ptr<Bucket> RenderCircleLayer::createBucket(const BucketParameters& parameters, const std::vector<const RenderLayer*>& layers) const { + return std::make_unique<CircleBucket>(parameters, layers); +} + +void RenderCircleLayer::transition(const TransitionParameters& parameters) { + unevaluated = impl().paint.transitioned(parameters, std::move(unevaluated)); +} + +void RenderCircleLayer::evaluate(const PropertyEvaluationParameters& parameters) { + evaluated = unevaluated.evaluate(parameters); + + passes = ((evaluated.get<style::CircleRadius>().constantOr(1) > 0 || + evaluated.get<style::CircleStrokeWidth>().constantOr(1) > 0) + && (evaluated.get<style::CircleColor>().constantOr(Color::black()).a > 0 || + evaluated.get<style::CircleStrokeColor>().constantOr(Color::black()).a > 0) + && (evaluated.get<style::CircleOpacity>().constantOr(1) > 0 || + evaluated.get<style::CircleStrokeOpacity>().constantOr(1) > 0)) + ? RenderPass::Translucent : RenderPass::None; +} + +bool RenderCircleLayer::hasTransition() const { + return unevaluated.hasTransition(); +} + +void RenderCircleLayer::render(PaintParameters& parameters, RenderSource*) { + if (parameters.pass == RenderPass::Opaque) { + return; + } + + const bool scaleWithMap = evaluated.get<CirclePitchScale>() == CirclePitchScaleType::Map; + const bool pitchWithMap = evaluated.get<CirclePitchAlignment>() == AlignmentType::Map; + + for (const RenderTile& tile : renderTiles) { + assert(dynamic_cast<CircleBucket*>(tile.tile.getBucket(*baseImpl))); + CircleBucket& bucket = *reinterpret_cast<CircleBucket*>(tile.tile.getBucket(*baseImpl)); + + parameters.programs.circle.get(evaluated).draw( + parameters.context, + gl::Triangles(), + parameters.depthModeForSublayer(0, gl::DepthMode::ReadOnly), + parameters.mapMode == MapMode::Still + ? parameters.stencilModeForClipping(tile.clip) + : gl::StencilMode::disabled(), + parameters.colorModeForRenderPass(), + CircleProgram::UniformValues { + uniforms::u_matrix::Value{ + tile.translatedMatrix(evaluated.get<CircleTranslate>(), + evaluated.get<CircleTranslateAnchor>(), + parameters.state) + }, + uniforms::u_scale_with_map::Value{ scaleWithMap }, + uniforms::u_extrude_scale::Value{ pitchWithMap + ? std::array<float, 2> {{ + tile.id.pixelsToTileUnits(1, parameters.state.getZoom()), + tile.id.pixelsToTileUnits(1, parameters.state.getZoom()) }} + : parameters.pixelsToGLUnits }, + uniforms::u_camera_to_center_distance::Value{ parameters.state.getCameraToCenterDistance() }, + uniforms::u_pitch_with_map::Value{ pitchWithMap } + }, + *bucket.vertexBuffer, + *bucket.indexBuffer, + bucket.segments, + bucket.paintPropertyBinders.at(getID()), + evaluated, + parameters.state.getZoom(), + getID() + ); + } +} + +bool RenderCircleLayer::queryIntersectsFeature( + const GeometryCoordinates& queryGeometry, + const GeometryTileFeature& feature, + const float zoom, + const float bearing, + const float pixelsToTileUnits) const { + + // Translate query geometry + auto translatedQueryGeometry = FeatureIndex::translateQueryGeometry( + queryGeometry, + evaluated.get<style::CircleTranslate>(), + evaluated.get<style::CircleTranslateAnchor>(), + bearing, + pixelsToTileUnits); + + // Evaluate function + auto circleRadius = evaluated.get<style::CircleRadius>() + .evaluate(feature, zoom, style::CircleRadius::defaultValue()) + * pixelsToTileUnits; + + // Test intersection + return util::polygonIntersectsBufferedMultiPoint(translatedQueryGeometry.value_or(queryGeometry), feature.getGeometries(), circleRadius); +} + +} // namespace mbgl |