mirror of
https://github.com/ciphervance/supercell-wx.git
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647 lines
18 KiB
C++
647 lines
18 KiB
C++
#include <scwx/qt/gl/draw/icons.hpp>
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#include <scwx/qt/types/icon_types.hpp>
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#include <scwx/qt/util/maplibre.hpp>
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#include <scwx/qt/util/texture_atlas.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 <boost/unordered/unordered_flat_map.hpp>
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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::icons";
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static const auto logger_ = scwx::util::Logger::Create(logPrefix_);
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static constexpr std::size_t kNumRectangles = 1;
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static constexpr std::size_t kNumTriangles = kNumRectangles * 2;
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static constexpr std::size_t kVerticesPerTriangle = 3;
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static constexpr std::size_t kVerticesPerRectangle = kVerticesPerTriangle * 2;
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static constexpr std::size_t kPointsPerVertex = 9;
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static constexpr std::size_t kPointsPerTexCoord = 3;
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static constexpr std::size_t kIconBufferLength =
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kNumTriangles * kVerticesPerTriangle * kPointsPerVertex;
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static constexpr std::size_t kTextureBufferLength =
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kNumTriangles * kVerticesPerTriangle * kPointsPerTexCoord;
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struct IconDrawItem : types::EventHandler
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{
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boost::gil::rgba32f_pixel_t modulate_ {1.0f, 1.0f, 1.0f, 1.0f};
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double x_ {};
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double y_ {};
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units::degrees<double> angle_ {};
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std::string iconSheet_ {};
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std::size_t iconIndex_ {};
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std::string hoverText_ {};
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};
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class Icons::Impl
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{
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public:
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struct IconHoverEntry
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{
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std::shared_ptr<IconDrawItem> di_;
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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(const 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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vao_ {GL_INVALID_INDEX},
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vbo_ {GL_INVALID_INDEX},
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numVertices_ {0}
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{
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}
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~Impl() {}
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void UpdateBuffers();
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void UpdateTextureBuffer();
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void Update(bool textureAtlasChanged);
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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 lastTextureAtlasChanged_ {false};
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std::mutex iconMutex_;
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boost::unordered_flat_map<std::string, types::IconInfo>
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currentIconSheets_ {};
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boost::unordered_flat_map<std::string, types::IconInfo> newIconSheets_ {};
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std::vector<std::shared_ptr<IconDrawItem>> currentIconList_ {};
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std::vector<std::shared_ptr<IconDrawItem>> newIconList_ {};
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std::vector<std::shared_ptr<IconDrawItem>> newValidIconList_ {};
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std::vector<float> currentIconBuffer_ {};
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std::vector<float> newIconBuffer_ {};
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std::vector<float> textureBuffer_ {};
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std::vector<IconHoverEntry> currentHoverIcons_ {};
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std::vector<IconHoverEntry> newHoverIcons_ {};
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std::shared_ptr<ShaderProgram> shaderProgram_;
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GLint uMVPMatrixLocation_;
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GLuint vao_;
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std::array<GLuint, 2> vbo_;
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GLsizei numVertices_;
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};
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Icons::Icons(const 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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Icons::~Icons() = default;
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Icons::Icons(Icons&&) noexcept = default;
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Icons& Icons::operator=(Icons&&) noexcept = default;
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void Icons::Initialize()
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{
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gl::OpenGLFunctions& gl = p->context_->gl();
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p->shaderProgram_ = p->context_->GetShaderProgram(
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{{GL_VERTEX_SHADER, ":/gl/texture2d_array.vert"},
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{GL_FRAGMENT_SHADER, ":/gl/texture2d_array.frag"}});
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p->uMVPMatrixLocation_ = p->shaderProgram_->GetUniformLocation("uMVPMatrix");
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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(GL_ARRAY_BUFFER, 0u, nullptr, GL_DYNAMIC_DRAW);
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// aVertex
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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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reinterpret_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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// aTexCoord
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gl.glVertexAttribPointer(2,
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3,
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GL_FLOAT,
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GL_FALSE,
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kPointsPerTexCoord * sizeof(float),
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static_cast<void*>(0));
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gl.glEnableVertexAttribArray(2);
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p->dirty_ = true;
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}
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void Icons::Render(const QMapLibreGL::CustomLayerRenderParameters& params,
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bool textureAtlasChanged)
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{
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if (!p->visible_)
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{
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if (textureAtlasChanged)
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{
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p->lastTextureAtlasChanged_ = true;
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}
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return;
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}
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std::unique_lock lock {p->iconMutex_};
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if (!p->currentIconList_.empty())
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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(textureAtlasChanged);
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p->shaderProgram_->Use();
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UseDefaultProjection(params, p->uMVPMatrixLocation_);
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// Interpolate texture coordinates
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gl.glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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gl.glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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// Draw icons
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gl.glDrawArrays(GL_TRIANGLES, 0, p->numVertices_);
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}
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}
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void Icons::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(static_cast<GLsizei>(p->vbo_.size()), p->vbo_.data());
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std::unique_lock lock {p->iconMutex_};
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p->currentIconList_.clear();
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p->currentIconSheets_.clear();
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p->currentHoverIcons_.clear();
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p->currentIconBuffer_.clear();
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p->textureBuffer_.clear();
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}
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void Icons::SetVisible(bool visible)
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{
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p->visible_ = visible;
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}
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void Icons::StartIconSheets()
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{
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// Clear the new buffer
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p->newIconSheets_.clear();
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}
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void Icons::AddIconSheet(const std::string& name,
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std::size_t iconWidth,
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std::size_t iconHeight,
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std::int32_t hotX,
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std::int32_t hotY)
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{
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// Populate icon sheet map
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p->newIconSheets_.emplace(std::piecewise_construct,
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std::tuple {name},
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std::forward_as_tuple(types::IconInfo {
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name, iconWidth, iconHeight, hotX, hotY}));
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}
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void Icons::FinishIconSheets()
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{
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// Update icon sheets
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for (auto& iconSheet : p->newIconSheets_)
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{
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iconSheet.second.UpdateTextureInfo();
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}
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std::unique_lock lock {p->iconMutex_};
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// Swap buffers
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p->currentIconSheets_.swap(p->newIconSheets_);
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// Clear the new buffers
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p->newIconSheets_.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 Icons::StartIcons()
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{
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// Clear the new buffer
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p->newIconList_.clear();
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p->newValidIconList_.clear();
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p->newIconBuffer_.clear();
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p->newHoverIcons_.clear();
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}
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std::shared_ptr<IconDrawItem> Icons::AddIcon()
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{
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return p->newIconList_.emplace_back(std::make_shared<IconDrawItem>());
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}
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void Icons::SetIconTexture(const std::shared_ptr<IconDrawItem>& di,
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const std::string& iconSheet,
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std::size_t iconIndex)
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{
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di->iconSheet_ = iconSheet;
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di->iconIndex_ = iconIndex;
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}
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void Icons::SetIconLocation(const std::shared_ptr<IconDrawItem>& di,
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double x,
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double y)
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{
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di->x_ = x;
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di->y_ = y;
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}
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void Icons::SetIconAngle(const std::shared_ptr<IconDrawItem>& di,
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units::angle::degrees<double> angle)
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{
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di->angle_ = angle;
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}
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void Icons::SetIconModulate(const std::shared_ptr<IconDrawItem>& 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 Icons::SetIconModulate(const std::shared_ptr<IconDrawItem>& 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 Icons::SetIconHoverText(const std::shared_ptr<IconDrawItem>& 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 Icons::FinishIcons()
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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->iconMutex_};
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// Swap buffers
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p->currentIconList_.swap(p->newValidIconList_);
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p->currentIconBuffer_.swap(p->newIconBuffer_);
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p->currentHoverIcons_.swap(p->newHoverIcons_);
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// Clear the new buffers, except the full icon list (used to update buffers
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// without re-adding icons)
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p->newValidIconList_.clear();
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p->newIconBuffer_.clear();
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p->newHoverIcons_.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 Icons::Impl::UpdateBuffers()
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{
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newIconBuffer_.clear();
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newIconBuffer_.reserve(newIconList_.size() * kIconBufferLength);
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newValidIconList_.clear();
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newHoverIcons_.clear();
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for (auto& di : newIconList_)
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{
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auto it = currentIconSheets_.find(di->iconSheet_);
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if (it == currentIconSheets_.cend())
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{
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// No icon sheet found
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logger_->warn("Could not find icon sheet: {}", di->iconSheet_);
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continue;
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}
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auto& icon = it->second;
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// Validate icon
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if (di->iconIndex_ >= icon.numIcons_)
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{
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// No icon found
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logger_->warn("Invalid icon index: {}", di->iconIndex_);
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continue;
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}
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// Icon is valid, add to valid icon list
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newValidIconList_.push_back(di);
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// Base X/Y offsets in pixels
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const float x = static_cast<float>(di->x_);
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const float y = static_cast<float>(di->y_);
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// Icon size
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const float iw = static_cast<float>(icon.iconWidth_);
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const float ih = static_cast<float>(icon.iconHeight_);
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// Hot X/Y (zero-based icon center)
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const float hx = static_cast<float>(icon.hotX_);
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const float hy = static_cast<float>(icon.hotY_);
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// Final X/Y offsets in pixels
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const float lx = std::roundf(-hx);
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const float rx = std::roundf(lx + iw);
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const float ty = std::roundf(+hy);
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const float by = std::roundf(ty - ih);
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// Angle in degrees
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units::angle::degrees<float> angle = di->angle_;
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const float a = angle.value();
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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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newIconBuffer_.insert(newIconBuffer_.end(),
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{
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// Icon
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x, y, lx, by, mc0, mc1, mc2, mc3, a, // BL
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x, y, lx, ty, mc0, mc1, mc2, mc3, a, // TL
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x, y, rx, by, mc0, mc1, mc2, mc3, a, // BR
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x, y, rx, by, mc0, mc1, mc2, mc3, a, // BR
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x, y, rx, ty, mc0, mc1, mc2, mc3, a, // TR
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x, y, lx, ty, mc0, mc1, mc2, mc3, a // TL
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});
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if (!di->hoverText_.empty() || di->event_ != nullptr)
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{
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const units::angle::radians<double> radians = angle;
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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 {lx, ty};
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const glm::vec2 otr = rotate * glm::vec2 {rx, ty};
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const glm::vec2 obl = rotate * glm::vec2 {lx, by};
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const glm::vec2 obr = rotate * glm::vec2 {rx, by};
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newHoverIcons_.emplace_back(IconHoverEntry {di, otl, otr, obl, obr});
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}
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}
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}
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void Icons::Impl::UpdateTextureBuffer()
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{
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textureBuffer_.clear();
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textureBuffer_.reserve(currentIconList_.size() * kTextureBufferLength);
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for (auto& di : currentIconList_)
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{
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auto it = currentIconSheets_.find(di->iconSheet_);
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if (it == currentIconSheets_.cend())
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{
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// No file found. Should not get here, but insert empty data to match
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// up with data already buffered
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logger_->error("Could not find icon sheet: {}", di->iconSheet_);
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// clang-format off
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textureBuffer_.insert(
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textureBuffer_.end(),
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{
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// Icon
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0.0f, 0.0f, 0.0f, // BL
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0.0f, 0.0f, 0.0f, // TL
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0.0f, 0.0f, 0.0f, // BR
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0.0f, 0.0f, 0.0f, // BR
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0.0f, 0.0f, 0.0f, // TR
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0.0f, 0.0f, 0.0f // TL
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});
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// clang-format on
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continue;
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}
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auto& icon = it->second;
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// Validate icon
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if (di->iconIndex_ >= icon.numIcons_)
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{
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// No icon found
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logger_->error("Invalid icon index: {}", di->iconIndex_);
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// Will get here if a texture changes, and the texture shrunk such that
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// the icon is no longer found
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// clang-format off
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textureBuffer_.insert(
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textureBuffer_.end(),
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{
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// Icon
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0.0f, 0.0f, 0.0f, // BL
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0.0f, 0.0f, 0.0f, // TL
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0.0f, 0.0f, 0.0f, // BR
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0.0f, 0.0f, 0.0f, // BR
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0.0f, 0.0f, 0.0f, // TR
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0.0f, 0.0f, 0.0f // TL
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});
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// clang-format on
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continue;
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}
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// Texture coordinates
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const std::size_t iconRow = (di->iconIndex_) / icon.columns_;
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const std::size_t iconColumn = (di->iconIndex_) % icon.columns_;
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const float iconX = iconColumn * icon.scaledWidth_;
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const float iconY = iconRow * icon.scaledHeight_;
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const float ls = icon.texture_.sLeft_ + iconX;
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const float rs = ls + icon.scaledWidth_;
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const float tt = icon.texture_.tTop_ + iconY;
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const float bt = tt + icon.scaledHeight_;
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const float r = static_cast<float>(icon.texture_.layerId_);
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// clang-format off
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textureBuffer_.insert(
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textureBuffer_.end(),
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{
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// Icon
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ls, bt, r, // BL
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ls, tt, r, // TL
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rs, bt, r, // BR
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rs, bt, r, // BR
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rs, tt, r, // TR
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ls, tt, r // TL
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});
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|
// clang-format on
|
|
}
|
|
}
|
|
|
|
void Icons::Impl::Update(bool textureAtlasChanged)
|
|
{
|
|
gl::OpenGLFunctions& gl = context_->gl();
|
|
|
|
// If the texture atlas has changed
|
|
if (dirty_ || textureAtlasChanged || lastTextureAtlasChanged_)
|
|
{
|
|
// Update texture coordinates
|
|
for (auto& iconSheet : currentIconSheets_)
|
|
{
|
|
iconSheet.second.UpdateTextureInfo();
|
|
}
|
|
|
|
// Update OpenGL texture buffer data
|
|
UpdateTextureBuffer();
|
|
|
|
// Buffer texture data
|
|
gl.glBindBuffer(GL_ARRAY_BUFFER, vbo_[1]);
|
|
gl.glBufferData(GL_ARRAY_BUFFER,
|
|
sizeof(float) * textureBuffer_.size(),
|
|
textureBuffer_.data(),
|
|
GL_DYNAMIC_DRAW);
|
|
|
|
lastTextureAtlasChanged_ = false;
|
|
}
|
|
|
|
// If buffers need updating
|
|
if (dirty_)
|
|
{
|
|
// Buffer vertex data
|
|
gl.glBindBuffer(GL_ARRAY_BUFFER, vbo_[0]);
|
|
gl.glBufferData(GL_ARRAY_BUFFER,
|
|
sizeof(float) * currentIconBuffer_.size(),
|
|
currentIconBuffer_.data(),
|
|
GL_DYNAMIC_DRAW);
|
|
|
|
numVertices_ =
|
|
static_cast<GLsizei>(currentIconBuffer_.size() / kPointsPerVertex);
|
|
}
|
|
|
|
dirty_ = false;
|
|
}
|
|
|
|
bool Icons::RunMousePicking(
|
|
const QMapLibreGL::CustomLayerRenderParameters& params,
|
|
const QPointF& mouseLocalPos,
|
|
const QPointF& mouseGlobalPos,
|
|
const glm::vec2& /* mouseCoords */,
|
|
const common::Coordinate& /* mouseGeoCoords */,
|
|
std::shared_ptr<types::EventHandler>& eventHandler)
|
|
{
|
|
std::unique_lock lock {p->iconMutex_};
|
|
|
|
bool itemPicked = false;
|
|
|
|
// Convert local coordinates to icon coordinates
|
|
glm::vec2 mouseLocalCoords {mouseLocalPos.x(),
|
|
params.height - mouseLocalPos.y()};
|
|
|
|
// For each pickable icon
|
|
auto it = std::find_if( //
|
|
std::execution::par_unseq,
|
|
p->currentHoverIcons_.crbegin(),
|
|
p->currentHoverIcons_.crend(),
|
|
[&mouseLocalCoords](const auto& icon)
|
|
{
|
|
// Initialize vertices
|
|
glm::vec2 bl = {static_cast<float>(icon.di_->x_),
|
|
static_cast<float>(icon.di_->y_)};
|
|
glm::vec2 br = bl;
|
|
glm::vec2 tl = br;
|
|
glm::vec2 tr = tl;
|
|
|
|
// Offset vertices
|
|
tl += icon.otl_;
|
|
bl += icon.obl_;
|
|
br += icon.obr_;
|
|
tr += icon.otr_;
|
|
|
|
// Test point against polygon bounds
|
|
return util::maplibre::IsPointInPolygon({tl, bl, br, tr},
|
|
mouseLocalCoords);
|
|
});
|
|
|
|
if (it != p->currentHoverIcons_.crend())
|
|
{
|
|
itemPicked = true;
|
|
|
|
if (!it->di_->hoverText_.empty())
|
|
{
|
|
// Show tooltip
|
|
util::tooltip::Show(it->di_->hoverText_, mouseGlobalPos);
|
|
}
|
|
if (it->di_->event_ != nullptr)
|
|
{
|
|
// Register event handler
|
|
eventHandler = it->di_;
|
|
}
|
|
}
|
|
|
|
return itemPicked;
|
|
}
|
|
|
|
void Icons::RegisterEventHandler(
|
|
const std::shared_ptr<IconDrawItem>& di,
|
|
const std::function<void(QEvent*)>& eventHandler)
|
|
{
|
|
di->event_ = eventHandler;
|
|
}
|
|
|
|
} // namespace draw
|
|
} // namespace gl
|
|
} // namespace qt
|
|
} // namespace scwx
|