mirror of
https://github.com/ciphervance/supercell-wx.git
synced 2025-10-30 14:50:05 +00:00
495 lines
16 KiB
C++
495 lines
16 KiB
C++
#include <scwx/qt/gl/draw/placefile_lines.hpp>
|
|
#include <scwx/qt/util/geographic_lib.hpp>
|
|
#include <scwx/qt/util/imgui.hpp>
|
|
#include <scwx/qt/util/maplibre.hpp>
|
|
#include <scwx/util/logger.hpp>
|
|
|
|
#include <execution>
|
|
|
|
namespace scwx
|
|
{
|
|
namespace qt
|
|
{
|
|
namespace gl
|
|
{
|
|
namespace draw
|
|
{
|
|
|
|
static const std::string logPrefix_ = "scwx::qt::gl::draw::placefile_lines";
|
|
static const auto logger_ = scwx::util::Logger::Create(logPrefix_);
|
|
|
|
static constexpr std::size_t kNumRectangles = 1;
|
|
static constexpr std::size_t kNumTriangles = kNumRectangles * 2;
|
|
static constexpr std::size_t kVerticesPerTriangle = 3;
|
|
static constexpr std::size_t kVerticesPerRectangle = kVerticesPerTriangle * 2;
|
|
static constexpr std::size_t kPointsPerVertex = 9;
|
|
static constexpr std::size_t kBufferLength =
|
|
kNumTriangles * kVerticesPerTriangle * kPointsPerVertex;
|
|
|
|
static const boost::gil::rgba8_pixel_t kBlack_ {0, 0, 0, 255};
|
|
|
|
class PlacefileLines::Impl
|
|
{
|
|
public:
|
|
struct LineHoverEntry
|
|
{
|
|
std::shared_ptr<const gr::Placefile::LineDrawItem> di_;
|
|
|
|
glm::vec2 p1_;
|
|
glm::vec2 p2_;
|
|
glm::vec2 otl_;
|
|
glm::vec2 otr_;
|
|
glm::vec2 obl_;
|
|
glm::vec2 obr_;
|
|
float width_;
|
|
};
|
|
|
|
explicit Impl(const std::shared_ptr<GlContext>& context) :
|
|
context_ {context},
|
|
shaderProgram_ {nullptr},
|
|
uMVPMatrixLocation_(GL_INVALID_INDEX),
|
|
uMapMatrixLocation_(GL_INVALID_INDEX),
|
|
uMapScreenCoordLocation_(GL_INVALID_INDEX),
|
|
uMapDistanceLocation_(GL_INVALID_INDEX),
|
|
vao_ {GL_INVALID_INDEX},
|
|
vbo_ {GL_INVALID_INDEX},
|
|
numVertices_ {0}
|
|
{
|
|
}
|
|
|
|
~Impl() {}
|
|
|
|
void BufferLine(const std::shared_ptr<const gr::Placefile::LineDrawItem>& di,
|
|
const gr::Placefile::LineDrawItem::Element& e1,
|
|
const gr::Placefile::LineDrawItem::Element& e2,
|
|
const float width,
|
|
const units::angle::degrees<double> angle,
|
|
const boost::gil::rgba8_pixel_t color,
|
|
const GLint threshold,
|
|
bool bufferHover = false);
|
|
void
|
|
UpdateBuffers(const std::shared_ptr<const gr::Placefile::LineDrawItem>& di);
|
|
void Update();
|
|
|
|
std::shared_ptr<GlContext> context_;
|
|
|
|
bool dirty_ {false};
|
|
bool thresholded_ {false};
|
|
|
|
std::mutex lineMutex_ {};
|
|
|
|
std::size_t currentNumLines_ {};
|
|
std::size_t newNumLines_ {};
|
|
|
|
std::vector<float> currentLinesBuffer_ {};
|
|
std::vector<GLint> currentThresholdBuffer_ {};
|
|
std::vector<float> newLinesBuffer_ {};
|
|
std::vector<GLint> newThresholdBuffer_ {};
|
|
|
|
std::vector<LineHoverEntry> currentHoverLines_ {};
|
|
std::vector<LineHoverEntry> newHoverLines_ {};
|
|
|
|
std::shared_ptr<ShaderProgram> shaderProgram_;
|
|
GLint uMVPMatrixLocation_;
|
|
GLint uMapMatrixLocation_;
|
|
GLint uMapScreenCoordLocation_;
|
|
GLint uMapDistanceLocation_;
|
|
|
|
GLuint vao_;
|
|
std::array<GLuint, 2> vbo_;
|
|
|
|
GLsizei numVertices_;
|
|
};
|
|
|
|
PlacefileLines::PlacefileLines(const std::shared_ptr<GlContext>& context) :
|
|
DrawItem(context->gl()), p(std::make_unique<Impl>(context))
|
|
{
|
|
}
|
|
PlacefileLines::~PlacefileLines() = default;
|
|
|
|
PlacefileLines::PlacefileLines(PlacefileLines&&) noexcept = default;
|
|
PlacefileLines& PlacefileLines::operator=(PlacefileLines&&) noexcept = default;
|
|
|
|
void PlacefileLines::set_thresholded(bool thresholded)
|
|
{
|
|
p->thresholded_ = thresholded;
|
|
}
|
|
|
|
void PlacefileLines::Initialize()
|
|
{
|
|
gl::OpenGLFunctions& gl = p->context_->gl();
|
|
|
|
p->shaderProgram_ = p->context_->GetShaderProgram(
|
|
{{GL_VERTEX_SHADER, ":/gl/geo_texture2d.vert"},
|
|
{GL_GEOMETRY_SHADER, ":/gl/threshold.geom"},
|
|
{GL_FRAGMENT_SHADER, ":/gl/color.frag"}});
|
|
|
|
p->uMVPMatrixLocation_ = p->shaderProgram_->GetUniformLocation("uMVPMatrix");
|
|
p->uMapMatrixLocation_ = p->shaderProgram_->GetUniformLocation("uMapMatrix");
|
|
p->uMapScreenCoordLocation_ =
|
|
p->shaderProgram_->GetUniformLocation("uMapScreenCoord");
|
|
p->uMapDistanceLocation_ =
|
|
p->shaderProgram_->GetUniformLocation("uMapDistance");
|
|
|
|
gl.glGenVertexArrays(1, &p->vao_);
|
|
gl.glGenBuffers(2, p->vbo_.data());
|
|
|
|
gl.glBindVertexArray(p->vao_);
|
|
gl.glBindBuffer(GL_ARRAY_BUFFER, p->vbo_[0]);
|
|
gl.glBufferData(GL_ARRAY_BUFFER, 0u, nullptr, GL_DYNAMIC_DRAW);
|
|
|
|
// aLatLong
|
|
gl.glVertexAttribPointer(0,
|
|
2,
|
|
GL_FLOAT,
|
|
GL_FALSE,
|
|
kPointsPerVertex * sizeof(float),
|
|
static_cast<void*>(0));
|
|
gl.glEnableVertexAttribArray(0);
|
|
|
|
// aXYOffset
|
|
gl.glVertexAttribPointer(1,
|
|
2,
|
|
GL_FLOAT,
|
|
GL_FALSE,
|
|
kPointsPerVertex * sizeof(float),
|
|
reinterpret_cast<void*>(2 * sizeof(float)));
|
|
gl.glEnableVertexAttribArray(1);
|
|
|
|
// aModulate
|
|
gl.glVertexAttribPointer(3,
|
|
4,
|
|
GL_FLOAT,
|
|
GL_FALSE,
|
|
kPointsPerVertex * sizeof(float),
|
|
reinterpret_cast<void*>(4 * sizeof(float)));
|
|
gl.glEnableVertexAttribArray(3);
|
|
|
|
// aAngle
|
|
gl.glVertexAttribPointer(4,
|
|
1,
|
|
GL_FLOAT,
|
|
GL_FALSE,
|
|
kPointsPerVertex * sizeof(float),
|
|
reinterpret_cast<void*>(8 * sizeof(float)));
|
|
gl.glEnableVertexAttribArray(4);
|
|
|
|
gl.glBindBuffer(GL_ARRAY_BUFFER, p->vbo_[1]);
|
|
gl.glBufferData(GL_ARRAY_BUFFER, 0u, nullptr, GL_DYNAMIC_DRAW);
|
|
|
|
// aThreshold
|
|
gl.glVertexAttribIPointer(5, //
|
|
1,
|
|
GL_INT,
|
|
0,
|
|
static_cast<void*>(0));
|
|
gl.glEnableVertexAttribArray(5);
|
|
|
|
p->dirty_ = true;
|
|
}
|
|
|
|
void PlacefileLines::Render(
|
|
const QMapLibreGL::CustomLayerRenderParameters& params)
|
|
{
|
|
std::unique_lock lock {p->lineMutex_};
|
|
|
|
if (p->currentNumLines_ > 0)
|
|
{
|
|
gl::OpenGLFunctions& gl = p->context_->gl();
|
|
|
|
gl.glBindVertexArray(p->vao_);
|
|
|
|
p->Update();
|
|
p->shaderProgram_->Use();
|
|
UseRotationProjection(params, p->uMVPMatrixLocation_);
|
|
UseMapProjection(
|
|
params, p->uMapMatrixLocation_, p->uMapScreenCoordLocation_);
|
|
|
|
if (p->thresholded_)
|
|
{
|
|
// If thresholding is enabled, set the map distance
|
|
units::length::nautical_miles<float> mapDistance =
|
|
util::maplibre::GetMapDistance(params);
|
|
gl.glUniform1f(p->uMapDistanceLocation_, mapDistance.value());
|
|
}
|
|
else
|
|
{
|
|
// If thresholding is disabled, set the map distance to 0
|
|
gl.glUniform1f(p->uMapDistanceLocation_, 0.0f);
|
|
}
|
|
|
|
// Draw icons
|
|
gl.glDrawArrays(GL_TRIANGLES, 0, p->numVertices_);
|
|
}
|
|
}
|
|
|
|
void PlacefileLines::Deinitialize()
|
|
{
|
|
gl::OpenGLFunctions& gl = p->context_->gl();
|
|
|
|
gl.glDeleteVertexArrays(1, &p->vao_);
|
|
gl.glDeleteBuffers(2, p->vbo_.data());
|
|
|
|
std::unique_lock lock {p->lineMutex_};
|
|
|
|
p->currentLinesBuffer_.clear();
|
|
p->currentThresholdBuffer_.clear();
|
|
p->currentHoverLines_.clear();
|
|
}
|
|
|
|
bool PlacefileLines::RunMousePicking(
|
|
const QMapLibreGL::CustomLayerRenderParameters& params,
|
|
const glm::vec2& mousePos)
|
|
{
|
|
std::unique_lock lock {p->lineMutex_};
|
|
|
|
bool itemPicked = false;
|
|
|
|
// Calculate map scale, remove width and height from original calculation
|
|
glm::vec2 scale = util::maplibre::GetMapScale(params);
|
|
scale = 2.0f / glm::vec2 {scale.x * params.width, scale.y * params.height};
|
|
|
|
// Scale and rotate the identity matrix to create the map matrix
|
|
glm::mat4 mapMatrix {1.0f};
|
|
mapMatrix = glm::scale(mapMatrix, glm::vec3 {scale, 1.0f});
|
|
mapMatrix = glm::rotate(mapMatrix,
|
|
glm::radians<float>(params.bearing),
|
|
glm::vec3(0.0f, 0.0f, 1.0f));
|
|
|
|
// For each pickable line
|
|
auto it = std::find_if(
|
|
std::execution::par_unseq,
|
|
p->currentHoverLines_.cbegin(),
|
|
p->currentHoverLines_.cend(),
|
|
[&mapMatrix, &mousePos](const auto& line)
|
|
{
|
|
// Initialize vertices
|
|
glm::vec2 bl = line.p1_;
|
|
glm::vec2 br = bl;
|
|
glm::vec2 tl = line.p2_;
|
|
glm::vec2 tr = tl;
|
|
|
|
// Calculate offsets
|
|
// - Rotated offset is half the line width (pixels) in each direction
|
|
// - Multiply the offset by the scaled and rotated map matrix
|
|
const glm::vec2 otl = mapMatrix * glm::vec4 {line.otl_, 0.0f, 1.0f};
|
|
const glm::vec2 obl = mapMatrix * glm::vec4 {line.obl_, 0.0f, 1.0f};
|
|
const glm::vec2 obr = mapMatrix * glm::vec4 {line.obr_, 0.0f, 1.0f};
|
|
const glm::vec2 otr = mapMatrix * glm::vec4 {line.otr_, 0.0f, 1.0f};
|
|
|
|
// Offset vertices
|
|
tl += otl;
|
|
bl += obl;
|
|
br += obr;
|
|
tr += otr;
|
|
|
|
// TODO: X/Y offsets
|
|
|
|
// Test point against polygon bounds
|
|
return util::maplibre::IsPointInPolygon({tl, bl, br, tr}, mousePos);
|
|
});
|
|
|
|
if (it != p->currentHoverLines_.cend())
|
|
{
|
|
itemPicked = true;
|
|
util::ImGui::Instance().DrawTooltip(it->di_->hoverText_);
|
|
}
|
|
|
|
return itemPicked;
|
|
}
|
|
|
|
void PlacefileLines::StartLines()
|
|
{
|
|
// Clear the new buffers
|
|
p->newLinesBuffer_.clear();
|
|
p->newThresholdBuffer_.clear();
|
|
p->newHoverLines_.clear();
|
|
|
|
p->newNumLines_ = 0u;
|
|
}
|
|
|
|
void PlacefileLines::AddLine(
|
|
const std::shared_ptr<gr::Placefile::LineDrawItem>& di)
|
|
{
|
|
if (di != nullptr && !di->elements_.empty())
|
|
{
|
|
p->UpdateBuffers(di);
|
|
p->newNumLines_ += (di->elements_.size() - 1) * 2;
|
|
}
|
|
}
|
|
|
|
void PlacefileLines::FinishLines()
|
|
{
|
|
std::unique_lock lock {p->lineMutex_};
|
|
|
|
// Swap buffers
|
|
p->currentLinesBuffer_.swap(p->newLinesBuffer_);
|
|
p->currentThresholdBuffer_.swap(p->newThresholdBuffer_);
|
|
p->currentHoverLines_.swap(p->newHoverLines_);
|
|
|
|
// Clear the new buffers
|
|
p->newLinesBuffer_.clear();
|
|
p->newThresholdBuffer_.clear();
|
|
p->newHoverLines_.clear();
|
|
|
|
// Update the number of lines
|
|
p->currentNumLines_ = p->newNumLines_;
|
|
p->numVertices_ =
|
|
static_cast<GLsizei>(p->currentNumLines_ * kVerticesPerRectangle);
|
|
|
|
// Mark the draw item dirty
|
|
p->dirty_ = true;
|
|
}
|
|
|
|
void PlacefileLines::Impl::UpdateBuffers(
|
|
const std::shared_ptr<const gr::Placefile::LineDrawItem>& di)
|
|
{
|
|
// Threshold value
|
|
units::length::nautical_miles<double> threshold = di->threshold_;
|
|
GLint thresholdValue = static_cast<GLint>(std::round(threshold.value()));
|
|
|
|
std::vector<units::angle::degrees<double>> angles {};
|
|
angles.reserve(di->elements_.size() - 1);
|
|
|
|
// For each element pair inside a Line statement, render a black line
|
|
for (std::size_t i = 0; i < di->elements_.size() - 1; ++i)
|
|
{
|
|
// Latitude and longitude coordinates in degrees
|
|
const float lat1 = static_cast<float>(di->elements_[i].latitude_);
|
|
const float lon1 = static_cast<float>(di->elements_[i].longitude_);
|
|
const float lat2 = static_cast<float>(di->elements_[i + 1].latitude_);
|
|
const float lon2 = static_cast<float>(di->elements_[i + 1].longitude_);
|
|
|
|
// Calculate angle
|
|
const units::angle::degrees<double> angle =
|
|
util::GeographicLib::GetAngle(lat1, lon1, lat2, lon2);
|
|
angles.push_back(angle);
|
|
|
|
// Buffer line with hover text
|
|
BufferLine(di,
|
|
di->elements_[i],
|
|
di->elements_[i + 1],
|
|
di->width_ + 2,
|
|
angle,
|
|
kBlack_,
|
|
thresholdValue,
|
|
true);
|
|
}
|
|
|
|
// For each element pair inside a Line statement, render a colored line
|
|
for (std::size_t i = 0; i < di->elements_.size() - 1; ++i)
|
|
{
|
|
BufferLine(di,
|
|
di->elements_[i],
|
|
di->elements_[i + 1],
|
|
di->width_,
|
|
angles[i],
|
|
di->color_,
|
|
thresholdValue);
|
|
}
|
|
}
|
|
|
|
void PlacefileLines::Impl::BufferLine(
|
|
const std::shared_ptr<const gr::Placefile::LineDrawItem>& di,
|
|
const gr::Placefile::LineDrawItem::Element& e1,
|
|
const gr::Placefile::LineDrawItem::Element& e2,
|
|
const float width,
|
|
const units::angle::degrees<double> angle,
|
|
const boost::gil::rgba8_pixel_t color,
|
|
const GLint threshold,
|
|
bool bufferHover)
|
|
{
|
|
// Latitude and longitude coordinates in degrees
|
|
const float lat1 = static_cast<float>(e1.latitude_);
|
|
const float lon1 = static_cast<float>(e1.longitude_);
|
|
const float lat2 = static_cast<float>(e2.latitude_);
|
|
const float lon2 = static_cast<float>(e2.longitude_);
|
|
|
|
// TODO: Base X/Y offsets in pixels
|
|
// const float x1 = static_cast<float>(e1.x_);
|
|
// const float y1 = static_cast<float>(e1.y_);
|
|
// const float x2 = static_cast<float>(e2.x_);
|
|
// const float y2 = static_cast<float>(e2.y_);
|
|
|
|
// Angle
|
|
const float a = static_cast<float>(angle.value());
|
|
|
|
// Final X/Y offsets in pixels
|
|
const float hw = width * 0.5f;
|
|
const float lx = -hw;
|
|
const float rx = +hw;
|
|
const float ty = +hw;
|
|
const float by = -hw;
|
|
|
|
// Modulate color
|
|
const float mc0 = color[0] / 255.0f;
|
|
const float mc1 = color[1] / 255.0f;
|
|
const float mc2 = color[2] / 255.0f;
|
|
const float mc3 = color[3] / 255.0f;
|
|
|
|
// Update buffers
|
|
newLinesBuffer_.insert(newLinesBuffer_.end(),
|
|
{
|
|
// Line
|
|
lat1, lon1, lx, by, mc0, mc1, mc2, mc3, a, // BL
|
|
lat2, lon2, lx, ty, mc0, mc1, mc2, mc3, a, // TL
|
|
lat1, lon1, rx, by, mc0, mc1, mc2, mc3, a, // BR
|
|
lat1, lon1, rx, by, mc0, mc1, mc2, mc3, a, // BR
|
|
lat2, lon2, rx, ty, mc0, mc1, mc2, mc3, a, // TR
|
|
lat2, lon2, lx, ty, mc0, mc1, mc2, mc3, a // TL
|
|
});
|
|
newThresholdBuffer_.insert(
|
|
newThresholdBuffer_.end(),
|
|
{threshold, threshold, threshold, threshold, threshold, threshold});
|
|
|
|
if (bufferHover && !di->hoverText_.empty())
|
|
{
|
|
const units::angle::radians<double> radians = angle;
|
|
|
|
const auto sc1 = util::maplibre::LatLongToScreenCoordinate({lat1, lon1});
|
|
const auto sc2 = util::maplibre::LatLongToScreenCoordinate({lat2, lon2});
|
|
|
|
const float cosAngle = cosf(static_cast<float>(radians.value()));
|
|
const float sinAngle = sinf(static_cast<float>(radians.value()));
|
|
|
|
const glm::mat2 rotate {cosAngle, -sinAngle, sinAngle, cosAngle};
|
|
|
|
const glm::vec2 otl = rotate * glm::vec2 {-hw, +hw};
|
|
const glm::vec2 otr = rotate * glm::vec2 {+hw, +hw};
|
|
const glm::vec2 obl = rotate * glm::vec2 {-hw, -hw};
|
|
const glm::vec2 obr = rotate * glm::vec2 {+hw, -hw};
|
|
|
|
newHoverLines_.emplace_back(
|
|
LineHoverEntry {di, sc1, sc2, otl, otr, obl, obr, width});
|
|
}
|
|
}
|
|
|
|
void PlacefileLines::Impl::Update()
|
|
{
|
|
// If the placefile has been updated
|
|
if (dirty_)
|
|
{
|
|
gl::OpenGLFunctions& gl = context_->gl();
|
|
|
|
// Buffer lines data
|
|
gl.glBindBuffer(GL_ARRAY_BUFFER, vbo_[0]);
|
|
gl.glBufferData(GL_ARRAY_BUFFER,
|
|
sizeof(float) * currentLinesBuffer_.size(),
|
|
currentLinesBuffer_.data(),
|
|
GL_DYNAMIC_DRAW);
|
|
|
|
// Buffer threshold data
|
|
gl.glBindBuffer(GL_ARRAY_BUFFER, vbo_[1]);
|
|
gl.glBufferData(GL_ARRAY_BUFFER,
|
|
sizeof(GLint) * currentThresholdBuffer_.size(),
|
|
currentThresholdBuffer_.data(),
|
|
GL_DYNAMIC_DRAW);
|
|
}
|
|
|
|
dirty_ = false;
|
|
}
|
|
|
|
} // namespace draw
|
|
} // namespace gl
|
|
} // namespace qt
|
|
} // namespace scwx
|