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Clean up placefile lines, draw second line underneath for a black border

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This commit is contained in:
Dan Paulat 2023-08-21 22:19:18 -05:00
parent ddf11884a8
commit c6c64de169
2 changed files with 133 additions and 136 deletions
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266
scwx-qt/source/scwx/qt/gl/draw/placefile_lines.cpp
View file

@ -1,12 +1,8 @@
#include <scwx/qt/gl/draw/placefile_lines.hpp>
#include <scwx/qt/util/geographic_lib.hpp>
#include <scwx/qt/util/maplibre.hpp>
#include <scwx/qt/util/texture_atlas.hpp>
#include <scwx/util/logger.hpp>
#include <QUrl>
#include <boost/unordered/unordered_flat_map.hpp>
namespace scwx
{
namespace qt
@ -23,11 +19,11 @@ 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 = 11;
static constexpr std::size_t kPointsPerVertex = 9;
static constexpr std::size_t kBufferLength =
kNumTriangles * kVerticesPerTriangle * kPointsPerVertex;
static const std::string kTextureName_ = "lines/default-1x7";
static const boost::gil::rgba8_pixel_t kBlack_ {0, 0, 0, 255};
class PlacefileLines::Impl
{
@ -47,23 +43,29 @@ public:
~Impl() {}
void BufferLine(const gr::Placefile::LineDrawItem::Element& e1,
const gr::Placefile::LineDrawItem::Element& e2,
const float width,
const float angle,
const boost::gil::rgba8_pixel_t color,
const GLint threshold);
void UpdateBuffers(std::shared_ptr<const gr::Placefile::LineDrawItem>);
void Update();
std::shared_ptr<GlContext> context_;
bool dirty_ {false};
bool thresholded_ {false};
std::mutex lineMutex_;
std::vector<std::shared_ptr<const gr::Placefile::LineDrawItem>>
currentLineList_ {};
std::vector<std::shared_ptr<const gr::Placefile::LineDrawItem>>
newLineList_ {};
std::mutex lineMutex_ {};
std::size_t currentNumLines_ {};
std::size_t newNumLines_ {};
std::vector<float> lineBuffer_ {};
std::vector<GLint> thresholdBuffer_ {};
std::vector<float> currentLinesBuffer_ {};
std::vector<GLint> currentThresholdBuffer_ {};
std::vector<float> newLinesBuffer_ {};
std::vector<GLint> newThresholdBuffer_ {};
std::shared_ptr<ShaderProgram> shaderProgram_;
GLint uMVPMatrixLocation_;
@ -75,9 +77,6 @@ public:
std::array<GLuint, 2> vbo_;
GLsizei numVertices_;
void UpdateBuffers();
void Update(bool textureAtlasChanged);
};
PlacefileLines::PlacefileLines(std::shared_ptr<GlContext> context) :
@ -135,22 +134,13 @@ void PlacefileLines::Initialize()
reinterpret_cast<void*>(2 * sizeof(float)));
gl.glEnableVertexAttribArray(1);
// aTexCoord
gl.glVertexAttribPointer(2,
2,
GL_FLOAT,
GL_FALSE,
kPointsPerVertex * sizeof(float),
reinterpret_cast<void*>(4 * sizeof(float)));
gl.glEnableVertexAttribArray(2);
// aModulate
gl.glVertexAttribPointer(3,
4,
GL_FLOAT,
GL_FALSE,
kPointsPerVertex * sizeof(float),
reinterpret_cast<void*>(6 * sizeof(float)));
reinterpret_cast<void*>(4 * sizeof(float)));
gl.glEnableVertexAttribArray(3);
// aAngle
@ -159,7 +149,7 @@ void PlacefileLines::Initialize()
GL_FLOAT,
GL_FALSE,
kPointsPerVertex * sizeof(float),
reinterpret_cast<void*>(10 * sizeof(float)));
reinterpret_cast<void*>(8 * sizeof(float)));
gl.glEnableVertexAttribArray(4);
gl.glBindBuffer(GL_ARRAY_BUFFER, p->vbo_[1]);
@ -171,25 +161,23 @@ void PlacefileLines::Initialize()
GL_INT,
0,
static_cast<void*>(0));
gl.glVertexAttribDivisor(5, 2); // One value per rectangle
gl.glEnableVertexAttribArray(5);
p->dirty_ = true;
}
void PlacefileLines::Render(
const QMapLibreGL::CustomLayerRenderParameters& params,
bool textureAtlasChanged)
const QMapLibreGL::CustomLayerRenderParameters& params)
{
std::unique_lock lock {p->lineMutex_};
if (!p->currentLineList_.empty())
if (p->currentNumLines_ > 0)
{
gl::OpenGLFunctions& gl = p->context_->gl();
gl.glBindVertexArray(p->vao_);
p->Update(textureAtlasChanged);
p->Update();
p->shaderProgram_->Use();
UseRotationProjection(params, p->uMVPMatrixLocation_);
UseMapProjection(
@ -208,10 +196,6 @@ void PlacefileLines::Render(
gl.glUniform1f(p->uMapDistanceLocation_, 0.0f);
}
// Interpolate texture coordinates
gl.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
gl.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
// Draw icons
gl.glDrawArrays(GL_TRIANGLES, 0, p->numVertices_);
}
@ -226,15 +210,15 @@ void PlacefileLines::Deinitialize()
std::unique_lock lock {p->lineMutex_};
p->currentLineList_.clear();
p->lineBuffer_.clear();
p->thresholdBuffer_.clear();
p->currentLinesBuffer_.clear();
p->currentThresholdBuffer_.clear();
}
void PlacefileLines::StartLines()
{
// Clear the new buffer
p->newLineList_.clear();
// Clear the new buffers
p->newLinesBuffer_.clear();
p->newThresholdBuffer_.clear();
p->newNumLines_ = 0u;
}
@ -242,13 +226,10 @@ void PlacefileLines::StartLines()
void PlacefileLines::AddLine(
const std::shared_ptr<gr::Placefile::LineDrawItem>& di)
{
if (di != nullptr)
if (di != nullptr && !di->elements_.empty())
{
p->newLineList_.emplace_back(di);
if (!di->elements_.empty())
{
p->newNumLines_ += di->elements_.size() - 1;
}
p->UpdateBuffers(di);
p->newNumLines_ += (di->elements_.size() - 1) * 2;
}
}
@ -257,124 +238,141 @@ void PlacefileLines::FinishLines()
std::unique_lock lock {p->lineMutex_};
// Swap buffers
p->currentLineList_.swap(p->newLineList_);
p->currentLinesBuffer_.swap(p->newLinesBuffer_);
p->currentThresholdBuffer_.swap(p->newThresholdBuffer_);
// Clear the new buffers
p->newLineList_.clear();
p->newLinesBuffer_.clear();
p->newThresholdBuffer_.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()
void PlacefileLines::Impl::UpdateBuffers(
std::shared_ptr<const gr::Placefile::LineDrawItem> di)
{
auto texture =
util::TextureAtlas::Instance().GetTextureAttributes(kTextureName_);
// Threshold value
units::length::nautical_miles<double> threshold = di->threshold_;
GLint thresholdValue = static_cast<GLint>(std::round(threshold.value()));
// Texture coordinates (rotated)
const float ls = texture.tTop_;
const float rs = texture.tBottom_;
const float tt = texture.sLeft_;
const float bt = texture.sRight_;
std::vector<float> angles {};
angles.reserve(di->elements_.size() - 1);
lineBuffer_.clear();
lineBuffer_.reserve(currentNumLines_ * kBufferLength);
thresholdBuffer_.clear();
thresholdBuffer_.reserve(currentNumLines_);
numVertices_ = 0;
for (auto& di : currentLineList_)
// For each element pair inside a Line statement, render a black line
for (std::size_t i = 0; i < di->elements_.size() - 1; ++i)
{
// Threshold value
units::length::nautical_miles<double> threshold = di->threshold_;
GLint thresholdValue = static_cast<GLint>(std::round(threshold.value()));
// 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_);
// TODO: Angle in degrees
// const float a = 0.0f;
// Calculate angle
const units::angle::degrees<double> angle =
util::GeographicLib::GetAngle(lat1, lon1, lat2, lon2);
float angleValue = angle.value();
angles.push_back(angleValue);
// Line width / half width
const float lw = static_cast<float>(di->width_);
const float hw = lw * 0.5f;
// For each element pair inside a Line statement
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_);
// TODO: Base X/Y offsets in pixels
// const float x1 = static_cast<float>(di->elements_[i].x_);
// const float y1 = static_cast<float>(di->elements_[i].y_);
// const float x2 = static_cast<float>(di->elements_[i + 1].x_);
// const float y2 = static_cast<float>(di->elements_[i + 1].y_);
// TODO: Refactor this to placefile update time instead of buffer time
const units::angle::degrees<double> angle =
util::GeographicLib::GetAngle(lat1, lon1, lat2, lon2);
const float a = static_cast<float>(angle.value());
// Final X/Y offsets in pixels
const float lx = -hw;
const float rx = +hw;
const float ty = +hw;
const float by = -hw;
// Modulate color
const float mc0 = di->color_[0] / 255.0f;
const float mc1 = di->color_[1] / 255.0f;
const float mc2 = di->color_[2] / 255.0f;
const float mc3 = di->color_[3] / 255.0f;
lineBuffer_.insert(
lineBuffer_.end(),
{
// Icon
lat1, lon1, lx, by, ls, bt, mc0, mc1, mc2, mc3, a, // BL
lat2, lon2, lx, ty, ls, tt, mc0, mc1, mc2, mc3, a, // TL
lat1, lon1, rx, by, rs, bt, mc0, mc1, mc2, mc3, a, // BR
lat1, lon1, rx, by, rs, bt, mc0, mc1, mc2, mc3, a, // BR
lat2, lon2, rx, ty, rs, tt, mc0, mc1, mc2, mc3, a, // TR
lat2, lon2, lx, ty, ls, tt, mc0, mc1, mc2, mc3, a // TL
});
thresholdBuffer_.push_back(thresholdValue);
}
BufferLine(di->elements_[i],
di->elements_[i + 1],
di->width_ + 2,
static_cast<float>(angleValue),
kBlack_,
thresholdValue);
}
dirty_ = 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)
{
float angleValue = angles[i];
BufferLine(di->elements_[i],
di->elements_[i + 1],
di->width_,
static_cast<float>(angleValue),
di->color_,
thresholdValue);
}
}
void PlacefileLines::Impl::Update(bool textureAtlasChanged)
void PlacefileLines::Impl::BufferLine(
const gr::Placefile::LineDrawItem::Element& e1,
const gr::Placefile::LineDrawItem::Element& e2,
const float width,
const float angle,
const boost::gil::rgba8_pixel_t color,
const GLint threshold)
{
// If the texture atlas has changed
if (dirty_ || textureAtlasChanged)
{
// Update OpenGL buffer data
UpdateBuffers();
// 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 = angle;
// 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});
}
void PlacefileLines::Impl::Update()
{
// If the placefile has been updated
if (dirty_)
{
gl::OpenGLFunctions& gl = context_->gl();
// Buffer vertex data
// Buffer lines data
gl.glBindBuffer(GL_ARRAY_BUFFER, vbo_[0]);
gl.glBufferData(GL_ARRAY_BUFFER,
sizeof(float) * lineBuffer_.size(),
lineBuffer_.data(),
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) * thresholdBuffer_.size(),
thresholdBuffer_.data(),
sizeof(GLint) * currentThresholdBuffer_.size(),
currentThresholdBuffer_.data(),
GL_DYNAMIC_DRAW);
numVertices_ =
static_cast<GLsizei>(lineBuffer_.size() / kVerticesPerRectangle);
}
dirty_ = false;

3
scwx-qt/source/scwx/qt/gl/draw/placefile_lines.hpp
View file

@ -28,8 +28,7 @@ public:
void set_thresholded(bool thresholded);
void Initialize() override;
void Render(const QMapLibreGL::CustomLayerRenderParameters& params,
bool textureAtlasChanged) override;
void Render(const QMapLibreGL::CustomLayerRenderParameters& params) override;
void Deinitialize() override;
/**