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https://github.com/ciphervance/supercell-wx.git
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624 lines
20 KiB
C++
624 lines
20 KiB
C++
#include <scwx/qt/gl/draw/geo_lines.hpp>
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#include <scwx/qt/util/geographic_lib.hpp>
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#include <scwx/qt/util/maplibre.hpp>
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#include <scwx/qt/util/tooltip.hpp>
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#include <scwx/util/logger.hpp>
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#include <execution>
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#include <units/angle.h>
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namespace scwx
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{
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namespace qt
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{
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namespace gl
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{
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namespace draw
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{
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static const std::string logPrefix_ = "scwx::qt::gl::draw::geo_lines";
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static const auto logger_ = scwx::util::Logger::Create(logPrefix_);
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static constexpr size_t kNumRectangles = 1;
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static constexpr size_t kNumTriangles = kNumRectangles * 2;
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static constexpr size_t kVerticesPerTriangle = 3;
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static constexpr size_t kVerticesPerRectangle = kVerticesPerTriangle * 2;
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static constexpr size_t kPointsPerVertex = 9;
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static constexpr size_t kBufferLength =
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kNumTriangles * kVerticesPerTriangle * kPointsPerVertex;
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// Threshold, start time, end time
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static constexpr std::size_t kIntegersPerVertex_ = 3;
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struct GeoLineDrawItem
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{
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bool visible_ {true};
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units::length::nautical_miles<double> threshold_ {};
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std::chrono::sys_time<std::chrono::seconds> startTime_ {};
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std::chrono::sys_time<std::chrono::seconds> endTime_ {};
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boost::gil::rgba32f_pixel_t modulate_ {1.0f, 1.0f, 1.0f, 1.0f};
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float latitude1_ {};
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float longitude1_ {};
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float latitude2_ {};
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float longitude2_ {};
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float width_ {5.0};
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units::angle::degrees<float> angle_ {};
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std::string hoverText_ {};
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};
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class GeoLines::Impl
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{
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public:
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struct LineHoverEntry
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{
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std::shared_ptr<const GeoLineDrawItem> di_;
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glm::vec2 p1_;
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glm::vec2 p2_;
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glm::vec2 otl_;
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glm::vec2 otr_;
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glm::vec2 obl_;
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glm::vec2 obr_;
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};
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explicit Impl(std::shared_ptr<GlContext> context) :
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context_ {context},
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shaderProgram_ {nullptr},
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uMVPMatrixLocation_(GL_INVALID_INDEX),
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uMapMatrixLocation_(GL_INVALID_INDEX),
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uMapScreenCoordLocation_(GL_INVALID_INDEX),
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uMapDistanceLocation_(GL_INVALID_INDEX),
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uSelectedTimeLocation_(GL_INVALID_INDEX),
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vao_ {GL_INVALID_INDEX},
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vbo_ {GL_INVALID_INDEX}
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{
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}
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~Impl() {}
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void BufferLine(const std::shared_ptr<const GeoLineDrawItem>& di);
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void Update();
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void UpdateBuffers();
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std::shared_ptr<GlContext> context_;
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bool visible_ {true};
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bool dirty_ {false};
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bool thresholded_ {false};
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std::chrono::system_clock::time_point selectedTime_ {};
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std::mutex lineMutex_ {};
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std::vector<std::shared_ptr<GeoLineDrawItem>> currentLineList_ {};
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std::vector<std::shared_ptr<GeoLineDrawItem>> newLineList_ {};
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std::vector<float> currentLinesBuffer_ {};
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std::vector<GLint> currentIntegerBuffer_ {};
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std::vector<float> newLinesBuffer_ {};
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std::vector<GLint> newIntegerBuffer_ {};
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std::vector<LineHoverEntry> currentHoverLines_ {};
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std::vector<LineHoverEntry> newHoverLines_ {};
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std::shared_ptr<ShaderProgram> shaderProgram_;
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GLint uMVPMatrixLocation_;
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GLint uMapMatrixLocation_;
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GLint uMapScreenCoordLocation_;
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GLint uMapDistanceLocation_;
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GLint uSelectedTimeLocation_;
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GLuint vao_;
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std::array<GLuint, 2> vbo_;
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};
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GeoLines::GeoLines(std::shared_ptr<GlContext> context) :
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DrawItem(context->gl()), p(std::make_unique<Impl>(context))
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{
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}
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GeoLines::~GeoLines() = default;
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GeoLines::GeoLines(GeoLines&&) noexcept = default;
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GeoLines& GeoLines::operator=(GeoLines&&) noexcept = default;
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void GeoLines::set_selected_time(
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std::chrono::system_clock::time_point selectedTime)
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{
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p->selectedTime_ = selectedTime;
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}
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void GeoLines::set_thresholded(bool thresholded)
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{
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p->thresholded_ = thresholded;
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}
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void GeoLines::Initialize()
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{
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gl::OpenGLFunctions& gl = p->context_->gl();
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auto& gl30 = p->context_->gl30();
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p->shaderProgram_ = p->context_->GetShaderProgram(
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{{GL_VERTEX_SHADER, ":/gl/geo_texture2d.vert"},
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{GL_GEOMETRY_SHADER, ":/gl/threshold.geom"},
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{GL_FRAGMENT_SHADER, ":/gl/color.frag"}});
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p->uMVPMatrixLocation_ = p->shaderProgram_->GetUniformLocation("uMVPMatrix");
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p->uMapMatrixLocation_ = p->shaderProgram_->GetUniformLocation("uMapMatrix");
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p->uMapScreenCoordLocation_ =
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p->shaderProgram_->GetUniformLocation("uMapScreenCoord");
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p->uMapDistanceLocation_ =
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p->shaderProgram_->GetUniformLocation("uMapDistance");
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p->uSelectedTimeLocation_ =
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p->shaderProgram_->GetUniformLocation("uSelectedTime");
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gl.glGenVertexArrays(1, &p->vao_);
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gl.glGenBuffers(static_cast<GLsizei>(p->vbo_.size()), p->vbo_.data());
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gl.glBindVertexArray(p->vao_);
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gl.glBindBuffer(GL_ARRAY_BUFFER, p->vbo_[0]);
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gl.glBufferData(
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GL_ARRAY_BUFFER, sizeof(float) * kBufferLength, nullptr, GL_DYNAMIC_DRAW);
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// aLatLong
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gl.glVertexAttribPointer(0,
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2,
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GL_FLOAT,
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GL_FALSE,
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kPointsPerVertex * sizeof(float),
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static_cast<void*>(0));
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gl.glEnableVertexAttribArray(0);
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// aXYOffset
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gl.glVertexAttribPointer(1,
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2,
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GL_FLOAT,
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GL_FALSE,
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kPointsPerVertex * sizeof(float),
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reinterpret_cast<void*>(2 * sizeof(float)));
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gl.glEnableVertexAttribArray(1);
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// aModulate
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gl.glVertexAttribPointer(3,
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4,
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GL_FLOAT,
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GL_FALSE,
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kPointsPerVertex * sizeof(float),
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reinterpret_cast<void*>(4 * sizeof(float)));
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gl.glEnableVertexAttribArray(3);
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// aAngle
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gl.glVertexAttribPointer(4,
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1,
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GL_FLOAT,
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GL_FALSE,
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kPointsPerVertex * sizeof(float),
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reinterpret_cast<void*>(8 * sizeof(float)));
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gl.glEnableVertexAttribArray(4);
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gl.glBindBuffer(GL_ARRAY_BUFFER, p->vbo_[1]);
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gl.glBufferData(GL_ARRAY_BUFFER, 0u, nullptr, GL_DYNAMIC_DRAW);
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// aThreshold
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gl.glVertexAttribIPointer(5, //
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1,
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GL_INT,
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kIntegersPerVertex_ * sizeof(GLint),
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static_cast<void*>(0));
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gl.glEnableVertexAttribArray(5);
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// aTimeRange
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gl.glVertexAttribIPointer(6, //
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2,
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GL_INT,
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kIntegersPerVertex_ * sizeof(GLint),
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reinterpret_cast<void*>(1 * sizeof(GLint)));
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gl.glEnableVertexAttribArray(6);
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// aDisplayed
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gl30.glVertexAttribI1i(7, 1);
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p->dirty_ = true;
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}
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void GeoLines::Render(const QMapLibre::CustomLayerRenderParameters& params)
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{
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if (!p->visible_)
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{
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return;
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}
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std::unique_lock lock {p->lineMutex_};
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if (p->currentLineList_.size() > 0)
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{
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gl::OpenGLFunctions& gl = p->context_->gl();
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gl.glBindVertexArray(p->vao_);
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p->Update();
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p->shaderProgram_->Use();
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UseRotationProjection(params, p->uMVPMatrixLocation_);
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UseMapProjection(
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params, p->uMapMatrixLocation_, p->uMapScreenCoordLocation_);
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if (p->thresholded_)
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{
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// If thresholding is enabled, set the map distance
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units::length::nautical_miles<float> mapDistance =
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util::maplibre::GetMapDistance(params);
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gl.glUniform1f(p->uMapDistanceLocation_, mapDistance.value());
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}
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else
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{
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// If thresholding is disabled, set the map distance to 0
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gl.glUniform1f(p->uMapDistanceLocation_, 0.0f);
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}
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// Selected time
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std::chrono::system_clock::time_point selectedTime =
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(p->selectedTime_ == std::chrono::system_clock::time_point {}) ?
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std::chrono::system_clock::now() :
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p->selectedTime_;
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gl.glUniform1i(
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p->uSelectedTimeLocation_,
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static_cast<GLint>(std::chrono::duration_cast<std::chrono::minutes>(
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selectedTime.time_since_epoch())
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.count()));
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// Draw icons
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gl.glDrawArrays(GL_TRIANGLES,
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0,
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static_cast<GLsizei>(p->currentLineList_.size() *
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kVerticesPerRectangle));
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}
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}
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void GeoLines::Deinitialize()
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{
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gl::OpenGLFunctions& gl = p->context_->gl();
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gl.glDeleteVertexArrays(1, &p->vao_);
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gl.glDeleteBuffers(2, p->vbo_.data());
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std::unique_lock lock {p->lineMutex_};
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p->currentLinesBuffer_.clear();
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p->currentIntegerBuffer_.clear();
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p->currentHoverLines_.clear();
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}
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void GeoLines::SetVisible(bool visible)
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{
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p->visible_ = visible;
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}
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void GeoLines::StartLines()
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{
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// Clear the new buffers
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p->newLineList_.clear();
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p->newLinesBuffer_.clear();
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p->newIntegerBuffer_.clear();
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p->newHoverLines_.clear();
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}
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std::shared_ptr<GeoLineDrawItem> GeoLines::AddLine()
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{
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return p->newLineList_.emplace_back(std::make_shared<GeoLineDrawItem>());
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}
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void GeoLines::SetLineLocation(const std::shared_ptr<GeoLineDrawItem>& di,
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float latitude1,
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float longitude1,
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float latitude2,
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float longitude2)
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{
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di->latitude1_ = latitude1;
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di->longitude1_ = longitude1;
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di->latitude2_ = latitude2;
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di->longitude2_ = longitude2;
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}
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void GeoLines::SetLineModulate(const std::shared_ptr<GeoLineDrawItem>& di,
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boost::gil::rgba8_pixel_t modulate)
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{
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di->modulate_ = {modulate[0] / 255.0f,
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modulate[1] / 255.0f,
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modulate[2] / 255.0f,
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modulate[3] / 255.0f};
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}
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void GeoLines::SetLineModulate(const std::shared_ptr<GeoLineDrawItem>& di,
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boost::gil::rgba32f_pixel_t modulate)
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{
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di->modulate_ = modulate;
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}
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void GeoLines::SetLineWidth(const std::shared_ptr<GeoLineDrawItem>& di,
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float width)
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{
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di->width_ = width;
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}
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void GeoLines::SetLineVisible(const std::shared_ptr<GeoLineDrawItem>& di,
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bool visible)
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{
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di->visible_ = visible;
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}
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void GeoLines::SetLineHoverText(const std::shared_ptr<GeoLineDrawItem>& di,
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const std::string& text)
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{
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di->hoverText_ = text;
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}
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void GeoLines::FinishLines()
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{
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// Update buffers
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p->UpdateBuffers();
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std::unique_lock lock {p->lineMutex_};
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// Swap buffers
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p->currentLineList_.swap(p->newLineList_);
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p->currentLinesBuffer_.swap(p->newLinesBuffer_);
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p->currentIntegerBuffer_.swap(p->newIntegerBuffer_);
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p->currentHoverLines_.swap(p->newHoverLines_);
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// Clear the new buffers, except the full line list (used to update buffers
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// without re-adding lines)
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p->newLinesBuffer_.clear();
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p->newIntegerBuffer_.clear();
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p->newHoverLines_.clear();
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// Mark the draw item dirty
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p->dirty_ = true;
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}
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void GeoLines::Impl::UpdateBuffers()
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{
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newLinesBuffer_.clear();
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newLinesBuffer_.reserve(newLineList_.size() * kBufferLength);
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newIntegerBuffer_.clear();
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newIntegerBuffer_.reserve(newLineList_.size() * kVerticesPerRectangle *
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kIntegersPerVertex_);
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newHoverLines_.clear();
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for (auto& di : newLineList_)
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{
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BufferLine(di);
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}
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}
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void GeoLines::Impl::BufferLine(
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const std::shared_ptr<const GeoLineDrawItem>& di)
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{
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// Threshold value
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units::length::nautical_miles<double> threshold = di->threshold_;
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GLint thresholdValue = static_cast<GLint>(std::round(threshold.value()));
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// Start and end time
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GLint startTime =
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static_cast<GLint>(std::chrono::duration_cast<std::chrono::minutes>(
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di->startTime_.time_since_epoch())
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.count());
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GLint endTime =
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static_cast<GLint>(std::chrono::duration_cast<std::chrono::minutes>(
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di->endTime_.time_since_epoch())
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.count());
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// Latitude and longitude coordinates in degrees
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const float lat1 = di->latitude1_;
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const float lon1 = di->longitude1_;
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const float lat2 = di->latitude2_;
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const float lon2 = di->longitude2_;
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// TODO: Base X/Y offsets in pixels
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// const float x1 = static_cast<float>(di->x1_);
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// const float y1 = static_cast<float>(di->y1_);
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// const float x2 = static_cast<float>(di->x2_);
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// const float y2 = static_cast<float>(di->y2_);
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// Angle
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const units::angle::degrees<double> angle =
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util::GeographicLib::GetAngle(lat1, lon1, lat2, lon2);
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const float a = static_cast<float>(angle.value());
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// Final X/Y offsets in pixels
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const float hw = di->width_ * 0.5f;
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const float lx = -hw;
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const float rx = +hw;
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const float ty = +hw;
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const float by = -hw;
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// Modulate color
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const float mc0 = di->modulate_[0];
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const float mc1 = di->modulate_[1];
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const float mc2 = di->modulate_[2];
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const float mc3 = di->modulate_[3];
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// Update buffers
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newLinesBuffer_.insert(newLinesBuffer_.end(),
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{
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// Line
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lat1, lon1, lx, by, mc0, mc1, mc2, mc3, a, // BL
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lat2, lon2, lx, ty, mc0, mc1, mc2, mc3, a, // TL
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lat1, lon1, rx, by, mc0, mc1, mc2, mc3, a, // BR
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lat1, lon1, rx, by, mc0, mc1, mc2, mc3, a, // BR
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lat2, lon2, rx, ty, mc0, mc1, mc2, mc3, a, // TR
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lat2, lon2, lx, ty, mc0, mc1, mc2, mc3, a // TL
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});
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newIntegerBuffer_.insert(newIntegerBuffer_.end(),
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{thresholdValue,
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startTime,
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endTime,
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thresholdValue,
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startTime,
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endTime,
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thresholdValue,
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startTime,
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endTime,
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thresholdValue,
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startTime,
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endTime,
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thresholdValue,
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startTime,
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endTime,
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thresholdValue,
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startTime,
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endTime});
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if (!di->hoverText_.empty())
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{
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const units::angle::radians<double> radians = angle;
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const auto sc1 = util::maplibre::LatLongToScreenCoordinate({lat1, lon1});
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const auto sc2 = util::maplibre::LatLongToScreenCoordinate({lat2, lon2});
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const float cosAngle = cosf(static_cast<float>(radians.value()));
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const float sinAngle = sinf(static_cast<float>(radians.value()));
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const glm::mat2 rotate {cosAngle, -sinAngle, sinAngle, cosAngle};
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const glm::vec2 otl = rotate * glm::vec2 {-hw, +hw};
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const glm::vec2 otr = rotate * glm::vec2 {+hw, +hw};
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const glm::vec2 obl = rotate * glm::vec2 {-hw, -hw};
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const glm::vec2 obr = rotate * glm::vec2 {+hw, -hw};
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newHoverLines_.emplace_back(
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LineHoverEntry {di, sc1, sc2, otl, otr, obl, obr});
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}
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}
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void GeoLines::Impl::Update()
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{
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// If the lines have been updated
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if (dirty_)
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{
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gl::OpenGLFunctions& gl = context_->gl();
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// Buffer lines data
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gl.glBindBuffer(GL_ARRAY_BUFFER, vbo_[0]);
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gl.glBufferData(GL_ARRAY_BUFFER,
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sizeof(float) * currentLinesBuffer_.size(),
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currentLinesBuffer_.data(),
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GL_DYNAMIC_DRAW);
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// Buffer threshold data
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gl.glBindBuffer(GL_ARRAY_BUFFER, vbo_[1]);
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gl.glBufferData(GL_ARRAY_BUFFER,
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sizeof(GLint) * currentIntegerBuffer_.size(),
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currentIntegerBuffer_.data(),
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GL_DYNAMIC_DRAW);
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}
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dirty_ = false;
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}
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bool GeoLines::RunMousePicking(
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const QMapLibre::CustomLayerRenderParameters& params,
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const QPointF& /* mouseLocalPos */,
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const QPointF& mouseGlobalPos,
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const glm::vec2& mouseCoords,
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const common::Coordinate& /* mouseGeoCoords */,
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std::shared_ptr<types::EventHandler>& /* eventHandler */)
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{
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std::unique_lock lock {p->lineMutex_};
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bool itemPicked = false;
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// Calculate map scale, remove width and height from original calculation
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glm::vec2 scale = util::maplibre::GetMapScale(params);
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scale = 2.0f / glm::vec2 {scale.x * params.width, scale.y * params.height};
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// Scale and rotate the identity matrix to create the map matrix
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glm::mat4 mapMatrix {1.0f};
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mapMatrix = glm::scale(mapMatrix, glm::vec3 {scale, 1.0f});
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mapMatrix = glm::rotate(mapMatrix,
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glm::radians<float>(params.bearing),
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glm::vec3(0.0f, 0.0f, 1.0f));
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units::length::meters<double> mapDistance =
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(p->thresholded_) ? util::maplibre::GetMapDistance(params) :
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units::length::meters<double> {0.0};
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// If no time has been selected, use the current time
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std::chrono::system_clock::time_point selectedTime =
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(p->selectedTime_ == std::chrono::system_clock::time_point {}) ?
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std::chrono::system_clock::now() :
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p->selectedTime_;
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// For each pickable line
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auto it = std::find_if(
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std::execution::par_unseq,
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p->currentHoverLines_.crbegin(),
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p->currentHoverLines_.crend(),
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[&mapDistance, &selectedTime, &mapMatrix, &mouseCoords](const auto& line)
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{
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if ((
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// Placefile is thresholded
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mapDistance > units::length::meters<double> {0.0} &&
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// Placefile threshold is < 999 nmi
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static_cast<int>(std::round(
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units::length::nautical_miles<double> {line.di_->threshold_}
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.value())) < 999 &&
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// Map distance is beyond the threshold
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line.di_->threshold_ < mapDistance) ||
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(
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// Line has a start time
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line.di_->startTime_ !=
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std::chrono::system_clock::time_point {} &&
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|
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// The time range has not yet started
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(selectedTime < line.di_->startTime_ ||
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// The time range has ended
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line.di_->endTime_ <= selectedTime)))
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{
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// Line is not pickable
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return false;
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}
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// Initialize vertices
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glm::vec2 bl = line.p1_;
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glm::vec2 br = bl;
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glm::vec2 tl = line.p2_;
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glm::vec2 tr = tl;
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// Calculate offsets
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// - Rotated offset is half the line width (pixels) in each direction
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// - Multiply the offset by the scaled and rotated map matrix
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const glm::vec2 otl = mapMatrix * glm::vec4 {line.otl_, 0.0f, 1.0f};
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const glm::vec2 obl = mapMatrix * glm::vec4 {line.obl_, 0.0f, 1.0f};
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const glm::vec2 obr = mapMatrix * glm::vec4 {line.obr_, 0.0f, 1.0f};
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const glm::vec2 otr = mapMatrix * glm::vec4 {line.otr_, 0.0f, 1.0f};
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// Offset vertices
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tl += otl;
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bl += obl;
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br += obr;
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tr += otr;
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// TODO: X/Y offsets
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|
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// Test point against polygon bounds
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return util::maplibre::IsPointInPolygon({tl, bl, br, tr}, mouseCoords);
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});
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|
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if (it != p->currentHoverLines_.crend())
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|
{
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|
itemPicked = true;
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util::tooltip::Show(it->di_->hoverText_, mouseGlobalPos);
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}
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|
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|
return itemPicked;
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|
}
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|
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|
} // namespace draw
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} // namespace gl
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} // namespace qt
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} // namespace scwx
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