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Add geo icons draw item

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This commit is contained in:
Dan Paulat 2023-11-23 05:35:33 -06:00
parent da7cedddff
commit 5170130de8
3 changed files with 1042 additions and 0 deletions
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2
scwx-qt/scwx-qt.cmake
View file

@ -57,6 +57,7 @@ set(HDR_GL source/scwx/qt/gl/gl.hpp
set(SRC_GL source/scwx/qt/gl/gl_context.cpp set(SRC_GL source/scwx/qt/gl/gl_context.cpp
source/scwx/qt/gl/shader_program.cpp) source/scwx/qt/gl/shader_program.cpp)
set(HDR_GL_DRAW source/scwx/qt/gl/draw/draw_item.hpp set(HDR_GL_DRAW source/scwx/qt/gl/draw/draw_item.hpp
source/scwx/qt/gl/draw/geo_icons.hpp
source/scwx/qt/gl/draw/geo_line.hpp source/scwx/qt/gl/draw/geo_line.hpp
source/scwx/qt/gl/draw/placefile_icons.hpp source/scwx/qt/gl/draw/placefile_icons.hpp
source/scwx/qt/gl/draw/placefile_images.hpp source/scwx/qt/gl/draw/placefile_images.hpp
@ -66,6 +67,7 @@ set(HDR_GL_DRAW source/scwx/qt/gl/draw/draw_item.hpp
source/scwx/qt/gl/draw/placefile_triangles.hpp source/scwx/qt/gl/draw/placefile_triangles.hpp
source/scwx/qt/gl/draw/rectangle.hpp) source/scwx/qt/gl/draw/rectangle.hpp)
set(SRC_GL_DRAW source/scwx/qt/gl/draw/draw_item.cpp set(SRC_GL_DRAW source/scwx/qt/gl/draw/draw_item.cpp
source/scwx/qt/gl/draw/geo_icons.cpp
source/scwx/qt/gl/draw/geo_line.cpp source/scwx/qt/gl/draw/geo_line.cpp
source/scwx/qt/gl/draw/placefile_icons.cpp source/scwx/qt/gl/draw/placefile_icons.cpp
source/scwx/qt/gl/draw/placefile_images.cpp source/scwx/qt/gl/draw/placefile_images.cpp

877
scwx-qt/source/scwx/qt/gl/draw/geo_icons.cpp Normal file
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@ -0,0 +1,877 @@
#include <scwx/qt/gl/draw/geo_icons.hpp>
#include <scwx/qt/util/maplibre.hpp>
#include <scwx/qt/util/texture_atlas.hpp>
#include <scwx/qt/util/tooltip.hpp>
#include <scwx/util/logger.hpp>
#include <execution>
#include <boost/unordered/unordered_flat_map.hpp>
namespace scwx
{
namespace qt
{
namespace gl
{
namespace draw
{
static const std::string logPrefix_ = "scwx::qt::gl::draw::geo_icons";
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 kPointsPerTexCoord = 3;
static constexpr std::size_t kIconBufferLength =
kNumTriangles * kVerticesPerTriangle * kPointsPerVertex;
static constexpr std::size_t kTextureBufferLength =
kNumTriangles * kVerticesPerTriangle * kPointsPerTexCoord;
// Threshold, start time, end time
static constexpr std::size_t kIntegersPerVertex_ = 3;
struct IconInfo
{
IconInfo(const std::string& iconSheet,
std::size_t iconWidth,
std::size_t iconHeight,
std::int32_t hotX,
std::int32_t hotY) :
iconSheet_ {iconSheet},
iconWidth_ {iconWidth},
iconHeight_ {iconHeight},
hotX_ {hotX},
hotY_ {hotY}
{
}
void UpdateTextureInfo();
std::string iconSheet_;
std::size_t iconWidth_;
std::size_t iconHeight_;
std::int32_t hotX_;
std::int32_t hotY_;
util::TextureAttributes texture_ {};
std::size_t rows_ {};
std::size_t columns_ {};
std::size_t numIcons_ {};
float scaledWidth_ {};
float scaledHeight_ {};
};
struct GeoIconDrawItem
{
units::length::nautical_miles<double> threshold_ {};
std::chrono::sys_time<std::chrono::seconds> startTime_ {};
std::chrono::sys_time<std::chrono::seconds> endTime_ {};
bool visible_ {};
boost::gil::rgba8_pixel_t modulate_ {};
double latitude_ {};
double longitude_ {};
double x_ {};
double y_ {};
units::degrees<double> angle_ {};
std::string iconSheet_ {};
std::size_t iconIndex_ {};
std::string hoverText_ {};
};
class GeoIcons::Impl
{
public:
struct IconHoverEntry
{
std::shared_ptr<GeoIconDrawItem> di_;
glm::vec2 p_;
glm::vec2 otl_;
glm::vec2 otr_;
glm::vec2 obl_;
glm::vec2 obr_;
};
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),
uSelectedTimeLocation_(GL_INVALID_INDEX),
vao_ {GL_INVALID_INDEX},
vbo_ {GL_INVALID_INDEX},
numVertices_ {0}
{
}
~Impl() {}
void UpdateBuffers();
void UpdateTextureBuffer();
void Update(bool textureAtlasChanged);
std::shared_ptr<GlContext> context_;
bool dirty_ {false};
bool thresholded_ {false};
std::chrono::system_clock::time_point selectedTime_ {};
std::mutex iconMutex_;
boost::unordered_flat_map<std::string, IconInfo> currentIconSheets_ {};
boost::unordered_flat_map<std::string, IconInfo> newIconSheets_ {};
std::vector<std::shared_ptr<GeoIconDrawItem>> currentIconList_ {};
std::vector<std::shared_ptr<GeoIconDrawItem>> newIconList_ {};
std::vector<std::shared_ptr<GeoIconDrawItem>> newValidIconList_ {};
std::vector<float> currentIconBuffer_ {};
std::vector<GLint> currentIntegerBuffer_ {};
std::vector<float> newIconBuffer_ {};
std::vector<GLint> newIntegerBuffer_ {};
std::vector<float> textureBuffer_ {};
std::vector<IconHoverEntry> currentHoverIcons_ {};
std::vector<IconHoverEntry> newHoverIcons_ {};
std::shared_ptr<ShaderProgram> shaderProgram_;
GLint uMVPMatrixLocation_;
GLint uMapMatrixLocation_;
GLint uMapScreenCoordLocation_;
GLint uMapDistanceLocation_;
GLint uSelectedTimeLocation_;
GLuint vao_;
std::array<GLuint, 3> vbo_;
GLsizei numVertices_;
};
GeoIcons::GeoIcons(const std::shared_ptr<GlContext>& context) :
DrawItem(context->gl()), p(std::make_unique<Impl>(context))
{
}
GeoIcons::~GeoIcons() = default;
GeoIcons::GeoIcons(GeoIcons&&) noexcept = default;
GeoIcons& GeoIcons::operator=(GeoIcons&&) noexcept = default;
void GeoIcons::set_selected_time(
std::chrono::system_clock::time_point selectedTime)
{
p->selectedTime_ = selectedTime;
}
void GeoIcons::set_thresholded(bool thresholded)
{
p->thresholded_ = thresholded;
}
void GeoIcons::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/texture2d_array.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");
p->uSelectedTimeLocation_ =
p->shaderProgram_->GetUniformLocation("uSelectedTime");
gl.glGenVertexArrays(1, &p->vao_);
gl.glGenBuffers(static_cast<GLsizei>(p->vbo_.size()), 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);
// aTexCoord
gl.glVertexAttribPointer(2,
3,
GL_FLOAT,
GL_FALSE,
kPointsPerTexCoord * sizeof(float),
static_cast<void*>(0));
gl.glEnableVertexAttribArray(2);
gl.glBindBuffer(GL_ARRAY_BUFFER, p->vbo_[2]);
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);
// aTimeRange
gl.glVertexAttribIPointer(6, //
2,
GL_INT,
kIntegersPerVertex_ * sizeof(GLint),
reinterpret_cast<void*>(1 * sizeof(GLint)));
gl.glEnableVertexAttribArray(6);
p->dirty_ = true;
}
void GeoIcons::Render(const QMapLibreGL::CustomLayerRenderParameters& params,
bool textureAtlasChanged)
{
std::unique_lock lock {p->iconMutex_};
if (!p->currentIconList_.empty())
{
gl::OpenGLFunctions& gl = p->context_->gl();
gl.glBindVertexArray(p->vao_);
p->Update(textureAtlasChanged);
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);
}
// Selected time
std::chrono::system_clock::time_point selectedTime =
(p->selectedTime_ == std::chrono::system_clock::time_point {}) ?
std::chrono::system_clock::now() :
p->selectedTime_;
gl.glUniform1i(
p->uSelectedTimeLocation_,
static_cast<GLint>(std::chrono::duration_cast<std::chrono::minutes>(
selectedTime.time_since_epoch())
.count()));
// Interpolate texture coordinates
gl.glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
gl.glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
// Draw icons
gl.glDrawArrays(GL_TRIANGLES, 0, p->numVertices_);
}
}
void GeoIcons::Deinitialize()
{
gl::OpenGLFunctions& gl = p->context_->gl();
gl.glDeleteVertexArrays(1, &p->vao_);
gl.glDeleteBuffers(static_cast<GLsizei>(p->vbo_.size()), p->vbo_.data());
std::unique_lock lock {p->iconMutex_};
p->currentIconList_.clear();
p->currentIconSheets_.clear();
p->currentHoverIcons_.clear();
p->currentIconBuffer_.clear();
p->currentIntegerBuffer_.clear();
p->textureBuffer_.clear();
}
void IconInfo::UpdateTextureInfo()
{
texture_ = util::TextureAtlas::Instance().GetTextureAttributes(iconSheet_);
if (iconWidth_ > 0 && iconHeight_ > 0)
{
columns_ = texture_.size_.x / iconWidth_;
rows_ = texture_.size_.y / iconHeight_;
if (hotX_ == -1 || hotY_ == -1)
{
hotX_ = static_cast<std::int32_t>(iconWidth_ / 2);
hotY_ = static_cast<std::int32_t>(iconHeight_ / 2);
}
}
else
{
columns_ = 1u;
rows_ = 1u;
if (hotX_ == -1 || hotY_ == -1)
{
hotX_ = static_cast<std::int32_t>(texture_.size_.x / 2);
hotY_ = static_cast<std::int32_t>(texture_.size_.y / 2);
}
}
numIcons_ = columns_ * rows_;
// Pixel size
float xFactor = 0.0f;
float yFactor = 0.0f;
if (texture_.size_.x > 0 && texture_.size_.y > 0)
{
xFactor = (texture_.sRight_ - texture_.sLeft_) / texture_.size_.x;
yFactor = (texture_.tBottom_ - texture_.tTop_) / texture_.size_.y;
}
scaledWidth_ = iconWidth_ * xFactor;
scaledHeight_ = iconHeight_ * yFactor;
}
void GeoIcons::StartIconSheets()
{
// Clear the new buffer
p->newIconSheets_.clear();
}
void GeoIcons::AddIconSheet(const std::string& name,
std::size_t iconWidth,
std::size_t iconHeight,
std::int32_t hotX,
std::int32_t hotY)
{
// Populate icon sheet map
p->newIconSheets_.emplace(std::piecewise_construct,
std::tuple {name},
std::forward_as_tuple(IconInfo {
name, iconWidth, iconHeight, hotX, hotY}));
}
void GeoIcons::FinishIconSheets()
{
// Update icon sheets
for (auto& iconSheet : p->newIconSheets_)
{
iconSheet.second.UpdateTextureInfo();
}
std::unique_lock lock {p->iconMutex_};
// Swap buffers
p->currentIconSheets_.swap(p->newIconSheets_);
// Clear the new buffers
p->newIconSheets_.clear();
// Mark the draw item dirty
p->dirty_ = true;
}
void GeoIcons::StartIcons()
{
// Clear the new buffer
p->newIconList_.clear();
p->newValidIconList_.clear();
p->newIconBuffer_.clear();
p->newIntegerBuffer_.clear();
p->newHoverIcons_.clear();
}
std::shared_ptr<GeoIconDrawItem> GeoIcons::AddIcon()
{
return p->newIconList_.emplace_back(std::make_shared<GeoIconDrawItem>());
}
void GeoIcons::SetIconTexture(const std::shared_ptr<GeoIconDrawItem>& di,
const std::string& iconSheet,
std::size_t iconIndex)
{
di->iconSheet_ = iconSheet;
di->iconIndex_ = iconIndex;
}
void GeoIcons::SetIconLocation(const std::shared_ptr<GeoIconDrawItem>& di,
units::angle::degrees<double> latitude,
units::angle::degrees<double> longitude,
double xOffset,
double yOffset)
{
di->latitude_ = latitude.value();
di->longitude_ = longitude.value();
di->x_ = xOffset;
di->y_ = yOffset;
}
void GeoIcons::SetIconAngle(const std::shared_ptr<GeoIconDrawItem>& di,
units::angle::degrees<double> angle)
{
di->angle_ = angle;
}
void GeoIcons::SetIconModulate(const std::shared_ptr<GeoIconDrawItem>& di,
boost::gil::rgba8_pixel_t modulate)
{
di->modulate_ = modulate;
}
void GeoIcons::SetIconHoverText(const std::shared_ptr<GeoIconDrawItem>& di,
const std::string& text)
{
di->hoverText_ = text;
}
void GeoIcons::SetIconVisible(const std::shared_ptr<GeoIconDrawItem>& di,
bool visible)
{
di->visible_ = visible;
}
void GeoIcons::FinishIcons()
{
// Update buffers
p->UpdateBuffers();
std::unique_lock lock {p->iconMutex_};
// Swap buffers
p->currentIconList_.swap(p->newValidIconList_);
p->currentIconBuffer_.swap(p->newIconBuffer_);
p->currentIntegerBuffer_.swap(p->newIntegerBuffer_);
p->currentHoverIcons_.swap(p->newHoverIcons_);
// Clear the new buffers
p->newIconList_.clear();
p->newValidIconList_.clear();
p->newIconBuffer_.clear();
p->newIntegerBuffer_.clear();
p->newHoverIcons_.clear();
// Mark the draw item dirty
p->dirty_ = true;
}
void GeoIcons::Impl::UpdateBuffers()
{
newIconBuffer_.clear();
newIconBuffer_.reserve(newIconList_.size() * kIconBufferLength);
newIntegerBuffer_.clear();
newIntegerBuffer_.reserve(newIconList_.size() * kVerticesPerRectangle *
kIntegersPerVertex_);
for (auto& di : newIconList_)
{
// Skip hidden icons
if (!di->visible_)
{
continue;
}
auto it = currentIconSheets_.find(di->iconSheet_);
if (it == currentIconSheets_.cend())
{
// No icon sheet found
logger_->warn("Could not find icon sheet: {}", di->iconSheet_);
continue;
}
auto& icon = it->second;
// Validate icon
if (di->iconIndex_ >= icon.numIcons_)
{
// No icon found
logger_->warn("Invalid icon index: {}", di->iconIndex_);
continue;
}
// Icon is valid, add to valid icon list
newValidIconList_.push_back(di);
// Threshold value
units::length::nautical_miles<double> threshold = di->threshold_;
GLint thresholdValue = static_cast<GLint>(std::round(threshold.value()));
// Start and end time
GLint startTime =
static_cast<GLint>(std::chrono::duration_cast<std::chrono::minutes>(
di->startTime_.time_since_epoch())
.count());
GLint endTime =
static_cast<GLint>(std::chrono::duration_cast<std::chrono::minutes>(
di->endTime_.time_since_epoch())
.count());
// Latitude and longitude coordinates in degrees
const float lat = static_cast<float>(di->latitude_);
const float lon = static_cast<float>(di->longitude_);
// Base X/Y offsets in pixels
const float x = static_cast<float>(di->x_);
const float y = static_cast<float>(di->y_);
// Icon size
const float iw = static_cast<float>(icon.iconWidth_);
const float ih = static_cast<float>(icon.iconHeight_);
// Hot X/Y (zero-based icon center)
const float hx = static_cast<float>(icon.hotX_);
const float hy = static_cast<float>(icon.hotY_);
// Final X/Y offsets in pixels
const float lx = std::roundf(x - hx);
const float rx = std::roundf(lx + iw);
const float ty = std::roundf(y + hy);
const float by = std::roundf(ty - ih);
// Angle in degrees
units::angle::degrees<float> angle = di->angle_;
const float a = angle.value();
// Modulate color
const float mc0 = di->modulate_[0] / 255.0f;
const float mc1 = di->modulate_[1] / 255.0f;
const float mc2 = di->modulate_[2] / 255.0f;
const float mc3 = di->modulate_[3] / 255.0f;
newIconBuffer_.insert(newIconBuffer_.end(),
{
// Icon
lat, lon, lx, by, mc0, mc1, mc2, mc3, a, // BL
lat, lon, lx, ty, mc0, mc1, mc2, mc3, a, // TL
lat, lon, rx, by, mc0, mc1, mc2, mc3, a, // BR
lat, lon, rx, by, mc0, mc1, mc2, mc3, a, // BR
lat, lon, rx, ty, mc0, mc1, mc2, mc3, a, // TR
lat, lon, lx, ty, mc0, mc1, mc2, mc3, a // TL
});
newIntegerBuffer_.insert(newIntegerBuffer_.end(),
{thresholdValue,
startTime,
endTime,
thresholdValue,
startTime,
endTime,
thresholdValue,
startTime,
endTime,
thresholdValue,
startTime,
endTime,
thresholdValue,
startTime,
endTime,
thresholdValue,
startTime,
endTime});
if (!di->hoverText_.empty())
{
const units::angle::radians<double> radians = angle;
const auto sc = util::maplibre::LatLongToScreenCoordinate({lat, lon});
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 {lx, ty};
const glm::vec2 otr = rotate * glm::vec2 {rx, ty};
const glm::vec2 obl = rotate * glm::vec2 {lx, by};
const glm::vec2 obr = rotate * glm::vec2 {rx, by};
newHoverIcons_.emplace_back(
IconHoverEntry {di, sc, otl, otr, obl, obr});
}
}
}
void GeoIcons::Impl::UpdateTextureBuffer()
{
textureBuffer_.clear();
textureBuffer_.reserve(currentIconList_.size() * kTextureBufferLength);
for (auto& di : currentIconList_)
{
auto it = currentIconSheets_.find(di->iconSheet_);
if (it == currentIconSheets_.cend())
{
// No file found. Should not get here, but insert empty data to match
// up with data already buffered
logger_->error("Could not find icon sheet: {}", di->iconSheet_);
// clang-format off
textureBuffer_.insert(
textureBuffer_.end(),
{
// Icon
0.0f, 0.0f, 0.0f, // BL
0.0f, 0.0f, 0.0f, // TL
0.0f, 0.0f, 0.0f, // BR
0.0f, 0.0f, 0.0f, // BR
0.0f, 0.0f, 0.0f, // TR
0.0f, 0.0f, 0.0f // TL
});
// clang-format on
continue;
}
auto& icon = it->second;
// Validate icon
if (di->iconIndex_ >= icon.numIcons_)
{
// No icon found
logger_->error("Invalid icon index: {}", di->iconIndex_);
// Will get here if a texture changes, and the texture shrunk such that
// the icon is no longer found
// clang-format off
textureBuffer_.insert(
textureBuffer_.end(),
{
// Icon
0.0f, 0.0f, 0.0f, // BL
0.0f, 0.0f, 0.0f, // TL
0.0f, 0.0f, 0.0f, // BR
0.0f, 0.0f, 0.0f, // BR
0.0f, 0.0f, 0.0f, // TR
0.0f, 0.0f, 0.0f // TL
});
// clang-format on
continue;
}
// Texture coordinates
const std::size_t iconRow = (di->iconIndex_) / icon.columns_;
const std::size_t iconColumn = (di->iconIndex_) % icon.columns_;
const float iconX = iconColumn * icon.scaledWidth_;
const float iconY = iconRow * icon.scaledHeight_;
const float ls = icon.texture_.sLeft_ + iconX;
const float rs = ls + icon.scaledWidth_;
const float tt = icon.texture_.tTop_ + iconY;
const float bt = tt + icon.scaledHeight_;
const float r = static_cast<float>(icon.texture_.layerId_);
// clang-format off
textureBuffer_.insert(
textureBuffer_.end(),
{
// Icon
ls, bt, r, // BL
ls, tt, r, // TL
rs, bt, r, // BR
rs, bt, r, // BR
rs, tt, r, // TR
ls, tt, r // TL
});
// clang-format on
}
}
void GeoIcons::Impl::Update(bool textureAtlasChanged)
{
gl::OpenGLFunctions& gl = context_->gl();
// If the texture atlas has changed
if (dirty_ || textureAtlasChanged)
{
// 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);
}
// 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);
// Buffer threshold data
gl.glBindBuffer(GL_ARRAY_BUFFER, vbo_[2]);
gl.glBufferData(GL_ARRAY_BUFFER,
sizeof(GLint) * currentIntegerBuffer_.size(),
currentIntegerBuffer_.data(),
GL_DYNAMIC_DRAW);
numVertices_ =
static_cast<GLsizei>(currentIconBuffer_.size() / kPointsPerVertex);
}
dirty_ = false;
}
bool GeoIcons::RunMousePicking(
const QMapLibreGL::CustomLayerRenderParameters& params,
const QPointF& /* mouseLocalPos */,
const QPointF& mouseGlobalPos,
const glm::vec2& mouseCoords)
{
std::unique_lock lock {p->iconMutex_};
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));
units::length::meters<double> mapDistance =
(p->thresholded_) ? util::maplibre::GetMapDistance(params) :
units::length::meters<double> {0.0};
// If no time has been selected, use the current time
std::chrono::system_clock::time_point selectedTime =
(p->selectedTime_ == std::chrono::system_clock::time_point {}) ?
std::chrono::system_clock::now() :
p->selectedTime_;
// For each pickable icon
auto it = std::find_if(
std::execution::par_unseq,
p->currentHoverIcons_.crbegin(),
p->currentHoverIcons_.crend(),
[&mapDistance, &selectedTime, &mapMatrix, &mouseCoords](const auto& icon)
{
if ((
// Geo icon is thresholded
mapDistance > units::length::meters<double> {0.0} &&
// Geo icon threshold is < 999 nmi
static_cast<int>(std::round(
units::length::nautical_miles<double> {icon.di_->threshold_}
.value())) < 999 &&
// Map distance is beyond the threshold
icon.di_->threshold_ < mapDistance) ||
(
// Geo icon has a start time
icon.di_->startTime_ !=
std::chrono::system_clock::time_point {} &&
// The time range has not yet started
(selectedTime < icon.di_->startTime_ ||
// The time range has ended
icon.di_->endTime_ <= selectedTime)))
{
// Icon is not pickable
return false;
}
// Initialize vertices
glm::vec2 bl = icon.p_;
glm::vec2 br = bl;
glm::vec2 tl = br;
glm::vec2 tr = tl;
// Calculate offsets
// - Rotated offset is based on final X/Y offsets (pixels)
// - Multiply the offset by the scaled and rotated map matrix
const glm::vec2 otl = mapMatrix * glm::vec4 {icon.otl_, 0.0f, 1.0f};
const glm::vec2 obl = mapMatrix * glm::vec4 {icon.obl_, 0.0f, 1.0f};
const glm::vec2 obr = mapMatrix * glm::vec4 {icon.obr_, 0.0f, 1.0f};
const glm::vec2 otr = mapMatrix * glm::vec4 {icon.otr_, 0.0f, 1.0f};
// Offset vertices
tl += otl;
bl += obl;
br += obr;
tr += otr;
// Test point against polygon bounds
return util::maplibre::IsPointInPolygon({tl, bl, br, tr}, mouseCoords);
});
if (it != p->currentHoverIcons_.crend())
{
itemPicked = true;
util::tooltip::Show(it->di_->hoverText_, mouseGlobalPos);
}
return itemPicked;
}
} // namespace draw
} // namespace gl
} // namespace qt
} // namespace scwx

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scwx-qt/source/scwx/qt/gl/draw/geo_icons.hpp Normal file
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#pragma once
#include <scwx/qt/gl/gl_context.hpp>
#include <scwx/qt/gl/draw/draw_item.hpp>
#include <boost/gil.hpp>
#include <units/angle.h>
namespace scwx
{
namespace qt
{
namespace gl
{
namespace draw
{
struct GeoIconDrawItem;
class GeoIcons : public DrawItem
{
public:
explicit GeoIcons(const std::shared_ptr<GlContext>& context);
~GeoIcons();
GeoIcons(const GeoIcons&) = delete;
GeoIcons& operator=(const GeoIcons&) = delete;
GeoIcons(GeoIcons&&) noexcept;
GeoIcons& operator=(GeoIcons&&) noexcept;
void set_selected_time(std::chrono::system_clock::time_point selectedTime);
void set_thresholded(bool thresholded);
void Initialize() override;
void Render(const QMapLibreGL::CustomLayerRenderParameters& params,
bool textureAtlasChanged) override;
void Deinitialize() override;
bool RunMousePicking(const QMapLibreGL::CustomLayerRenderParameters& params,
const QPointF& mouseLocalPos,
const QPointF& mouseGlobalPos,
const glm::vec2& mouseCoords) override;
/**
* Resets and prepares the draw item for adding a new set of icon sheets.
*/
void StartIconSheets();
/**
* Adds an icon sheet for drawing the geo icons. The icon sheet must already
* exist in the texture atlas.
*
* @param [in] name The name of the icon sheet in the texture atlas
* @param [in] iconWidth The width of each icon in the icon sheet. Default is
* 0 for a single icon.
* @param [in] iconHeight The height of each icon in the icon sheet. Default
* is 0 for a single icon.
* @param [in] hotX The zero-based center of the each icon in the icon sheet.
* Default is -1 to center the icon.
* @param [in] hotY The zero-based center of the each icon in the icon sheet.
* Default is -1 to center the icon.
*/
void AddIconSheet(const std::string& name,
std::size_t iconWidth = 0,
std::size_t iconHeight = 0,
std::int32_t hotX = -1,
std::int32_t hotY = -1);
/**
* Resets and prepares the draw item for adding a new set of icon sheets.
*/
void FinishIconSheets();
/**
* Resets and prepares the draw item for adding a new set of icons.
*/
void StartIcons();
/**
* Adds a geo icon to the internal draw list.
*
* @return Geo icon draw item
*/
std::shared_ptr<GeoIconDrawItem> AddIcon();
/**
* Sets the texture of a geo icon.
*
* @param [in] di Geo icon draw item
* @param [in] iconSheet The name of the icon sheet in the texture atlas
* @param [in] iconIndex The zero-based index of the icon in the icon sheet
*/
void SetIconTexture(const std::shared_ptr<GeoIconDrawItem>& di,
const std::string& iconSheet,
std::size_t iconIndex);
/**
* Sets the location of a geo icon.
*
* @param [in] di Geo icon draw item
* @param [in] latitude The latitude of the geo icon.
* @param [in] longitude The longitude of the geo icon.
* @param [in] xOffset The x-offset of the geo icon. Default is 0.
* @param [in] yOffset The y-offset of the geo icon. Default is 0.
*/
void SetIconLocation(const std::shared_ptr<GeoIconDrawItem>& di,
units::angle::degrees<double> latitude,
units::angle::degrees<double> longitude,
double xOffset = 0.0,
double yOffset = 0.0);
/**
* Sets the angle of a geo icon.
*
* @param [in] di Geo icon draw item
* @param [in] angle Angle in degrees
*/
void SetIconAngle(const std::shared_ptr<GeoIconDrawItem>& di,
units::angle::degrees<double> angle);
/**
* Sets the modulate color of a geo icon.
*
* @param [in] di Geo icon draw item
* @param [in] modulate Modulate color
*/
void SetIconModulate(const std::shared_ptr<GeoIconDrawItem>& di,
boost::gil::rgba8_pixel_t modulate);
/**
* Sets the hover text of a geo icon.
*
* @param [in] di Geo icon draw item
* @param [in] text Hover text
*/
void SetIconHoverText(const std::shared_ptr<GeoIconDrawItem>& di,
const std::string& text);
/**
* Sets the visibility of a geo icon.
*
* @param [in] di Geo icon draw item
* @param [in] visible Icon visibility
*/
void SetIconVisible(const std::shared_ptr<GeoIconDrawItem>& di,
bool visible);
/**
* Finalizes the draw item after adding new icons.
*/
void FinishIcons();
private:
class Impl;
std::unique_ptr<Impl> p;
};
} // namespace draw
} // namespace gl
} // namespace qt
} // namespace scwx