mirror of
https://github.com/ciphervance/supercell-wx.git
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299 lines
8.1 KiB
C++
299 lines
8.1 KiB
C++
#include <scwx/qt/gl/draw/rectangle.hpp>
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#include <scwx/util/logger.hpp>
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#include <optional>
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namespace scwx::qt::gl::draw
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{
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static const std::string logPrefix_ = "scwx::qt::gl::draw::rectangle";
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static const auto logger_ = scwx::util::Logger::Create(logPrefix_);
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static constexpr size_t NUM_RECTANGLES = 5;
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static constexpr size_t NUM_TRIANGLES = NUM_RECTANGLES * 2;
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static constexpr size_t VERTICES_PER_TRIANGLE = 3;
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static constexpr size_t VERTICES_PER_RECTANGLE = VERTICES_PER_TRIANGLE * 2;
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static constexpr size_t POINTS_PER_VERTEX = 7;
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static constexpr size_t BUFFER_LENGTH =
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NUM_TRIANGLES * VERTICES_PER_TRIANGLE * POINTS_PER_VERTEX;
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class Rectangle::Impl
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{
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public:
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explicit Impl(std::shared_ptr<GlContext> context) :
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context_ {std::move(context)},
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dirty_ {false},
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visible_ {true},
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x_ {0.0f},
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y_ {0.0f},
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z_ {0.0f},
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width_ {0.0f},
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height_ {0.0f},
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borderWidth_ {0.0f},
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borderColor_ {0, 0, 0, 0},
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fillColor_ {std::nullopt},
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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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{
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}
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~Impl() = default;
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Impl(const Impl&) = delete;
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Impl& operator=(const Impl&) = delete;
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Impl(const Impl&&) = delete;
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Impl& operator=(const Impl&&) = delete;
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std::shared_ptr<GlContext> context_;
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bool dirty_;
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bool visible_;
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float x_;
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float y_;
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float z_;
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float width_;
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float height_;
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float borderWidth_;
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boost::gil::rgba8_pixel_t borderColor_;
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std::optional<boost::gil::rgba8_pixel_t> fillColor_;
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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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GLuint vbo_;
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void Update();
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};
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Rectangle::Rectangle(std::shared_ptr<GlContext> context) :
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DrawItem(), p(std::make_unique<Impl>(context))
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{
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}
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Rectangle::~Rectangle() = default;
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Rectangle::Rectangle(Rectangle&&) noexcept = default;
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Rectangle& Rectangle::operator=(Rectangle&&) noexcept = default;
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void Rectangle::Initialize()
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{
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p->shaderProgram_ =
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p->context_->GetShaderProgram(":/gl/color.vert", ":/gl/color.frag");
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p->uMVPMatrixLocation_ =
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glGetUniformLocation(p->shaderProgram_->id(), "uMVPMatrix");
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if (p->uMVPMatrixLocation_ == -1)
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{
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logger_->warn("Could not find uMVPMatrix");
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}
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glGenVertexArrays(1, &p->vao_);
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glGenBuffers(1, &p->vbo_);
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glBindVertexArray(p->vao_);
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glBindBuffer(GL_ARRAY_BUFFER, p->vbo_);
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glBufferData(
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GL_ARRAY_BUFFER, sizeof(float) * BUFFER_LENGTH, nullptr, GL_DYNAMIC_DRAW);
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// NOLINTBEGIN(modernize-use-nullptr)
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// NOLINTBEGIN(performance-no-int-to-ptr)
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glVertexAttribPointer(0,
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3,
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GL_FLOAT,
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GL_FALSE,
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POINTS_PER_VERTEX * sizeof(float),
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static_cast<void*>(0));
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glEnableVertexAttribArray(0);
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glVertexAttribPointer(1,
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4,
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GL_FLOAT,
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GL_FALSE,
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POINTS_PER_VERTEX * sizeof(float),
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reinterpret_cast<void*>(3 * sizeof(float)));
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glEnableVertexAttribArray(1);
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// NOLINTEND(performance-no-int-to-ptr)
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// NOLINTEND(modernize-use-nullptr)
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p->dirty_ = true;
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}
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void Rectangle::Render(const QMapLibre::CustomLayerRenderParameters& params)
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{
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if (p->visible_)
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{
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glBindVertexArray(p->vao_);
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glBindBuffer(GL_ARRAY_BUFFER, p->vbo_);
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p->Update();
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p->shaderProgram_->Use();
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UseDefaultProjection(params, p->uMVPMatrixLocation_);
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if (p->fillColor_.has_value())
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{
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// Draw fill
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// NOLINTNEXTLINE(cppcoreguidelines-avoid-magic-numbers)
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glDrawArrays(GL_TRIANGLES, 24, 6);
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}
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if (p->borderWidth_ > 0.0f)
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{
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// Draw border
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// NOLINTNEXTLINE(cppcoreguidelines-avoid-magic-numbers)
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glDrawArrays(GL_TRIANGLES, 0, 24);
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}
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}
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}
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void Rectangle::Deinitialize()
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{
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glDeleteVertexArrays(1, &p->vao_);
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glDeleteBuffers(1, &p->vbo_);
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}
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void Rectangle::SetBorder(float width, boost::gil::rgba8_pixel_t color)
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{
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if (p->borderWidth_ != width || p->borderColor_ != color)
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{
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p->borderWidth_ = width;
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p->borderColor_ = color;
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p->dirty_ = true;
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}
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}
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void Rectangle::SetFill(boost::gil::rgba8_pixel_t color)
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{
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if (p->fillColor_ != color)
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{
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p->fillColor_ = color;
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p->dirty_ = true;
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}
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}
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void Rectangle::SetPosition(float x, float y, float z)
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{
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if (p->x_ != x || p->y_ != y || p->z_ != z)
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{
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p->x_ = x;
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p->y_ = y;
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p->z_ = z;
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p->dirty_ = true;
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}
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}
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void Rectangle::SetSize(float width, float height)
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{
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if (p->width_ != width || p->height_ != height)
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{
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p->width_ = width;
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p->height_ = height;
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p->dirty_ = true;
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}
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}
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void Rectangle::SetVisible(bool visible)
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{
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p->visible_ = visible;
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}
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void Rectangle::Impl::Update()
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{
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if (dirty_)
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{
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const float lox = x_;
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const float rox = x_ + width_;
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const float boy = y_;
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const float toy = y_ + height_;
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const float lix = lox + borderWidth_;
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const float rix = rox - borderWidth_;
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const float biy = boy + borderWidth_;
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const float tiy = toy - borderWidth_;
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const float bc0 = borderColor_[0] / 255.0f;
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const float bc1 = borderColor_[1] / 255.0f;
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const float bc2 = borderColor_[2] / 255.0f;
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const float bc3 = borderColor_[3] / 255.0f;
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float fc0 = 0.0f;
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float fc1 = 0.0f;
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float fc2 = 0.0f;
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float fc3 = 0.0f;
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if (fillColor_.has_value())
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{
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boost::gil::rgba8_pixel_t& fc = fillColor_.value();
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fc0 = fc[0] / 255.0f;
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fc1 = fc[1] / 255.0f;
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fc2 = fc[2] / 255.0f;
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fc3 = fc[3] / 255.0f;
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}
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const float buffer[NUM_RECTANGLES][VERTICES_PER_RECTANGLE]
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[POINTS_PER_VERTEX] = //
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{ //
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// Left Border
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{
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{lox, boy, z_, bc0, bc1, bc2, bc3}, // BL
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{lox, toy, z_, bc0, bc1, bc2, bc3}, // TL
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{lix, boy, z_, bc0, bc1, bc2, bc3}, // BR
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{lix, boy, z_, bc0, bc1, bc2, bc3}, // BR
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{lix, toy, z_, bc0, bc1, bc2, bc3}, // TR
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{lox, toy, z_, bc0, bc1, bc2, bc3} // TL
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},
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// Right Border
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{
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{rox, boy, z_, bc0, bc1, bc2, bc3}, // BR
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{rox, toy, z_, bc0, bc1, bc2, bc3}, // TR
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{rix, boy, z_, bc0, bc1, bc2, bc3}, // BL
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{rix, boy, z_, bc0, bc1, bc2, bc3}, // BL
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{rix, toy, z_, bc0, bc1, bc2, bc3}, // TL
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{rox, toy, z_, bc0, bc1, bc2, bc3} // TR
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},
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// Top Border
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{
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{lox, toy, z_, bc0, bc1, bc2, bc3}, // TL
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{rox, toy, z_, bc0, bc1, bc2, bc3}, // TR
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{rox, tiy, z_, bc0, bc1, bc2, bc3}, // BR
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{rox, tiy, z_, bc0, bc1, bc2, bc3}, // BR
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{lox, tiy, z_, bc0, bc1, bc2, bc3}, // BL
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{lox, toy, z_, bc0, bc1, bc2, bc3} // TL
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},
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// Bottom Border
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{
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{lox, boy, z_, bc0, bc1, bc2, bc3}, // BL
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{rox, boy, z_, bc0, bc1, bc2, bc3}, // BR
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{rox, biy, z_, bc0, bc1, bc2, bc3}, // TR
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{rox, biy, z_, bc0, bc1, bc2, bc3}, // TR
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{lox, biy, z_, bc0, bc1, bc2, bc3}, // TL
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{lox, boy, z_, bc0, bc1, bc2, bc3} // BL
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},
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// Fill
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{
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{lox, toy, z_, fc0, fc1, fc2, fc3}, // TL
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{rox, toy, z_, fc0, fc1, fc2, fc3}, // TR
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{rox, boy, z_, fc0, fc1, fc2, fc3}, // BR
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{rox, boy, z_, fc0, fc1, fc2, fc3}, // BR
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{lox, boy, z_, fc0, fc1, fc2, fc3}, // BL
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{lox, toy, z_, fc0, fc1, fc2, fc3} // TL
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}};
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glBufferData(GL_ARRAY_BUFFER,
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sizeof(float) * BUFFER_LENGTH,
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static_cast<const void*>(buffer),
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GL_DYNAMIC_DRAW);
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dirty_ = false;
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}
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}
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} // namespace scwx::qt::gl::draw
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