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MapLibreParticleLab/platform/glfw/glfw_view.cpp
Gali Nelle 209857f8ac Fix LocationIndicator Layer 
This changes image size properties to be scales instead of pixel sizes.
The commit also adds fixes for handling image updates with the same ID,
adds tests for expressions in paint properties, as well as tests for using images
with pixel ratio greater than 1.
Finally it moves image-tilt-displacement and perspective-compensation properties
from layout to paint properties, and includes other minor cleanups.
2020-04-10 00:15:43 +03:00

1047 lines
42 KiB
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#include "glfw_view.hpp"
#include "glfw_backend.hpp"
#include "glfw_renderer_frontend.hpp"
#include "ny_route.hpp"
#include "test_writer.hpp"
#include <mbgl/annotation/annotation.hpp>
#include <mbgl/gfx/backend.hpp>
#include <mbgl/gfx/backend_scope.hpp>
#include <mbgl/map/camera.hpp>
#include <mbgl/renderer/renderer.hpp>
#include <mbgl/style/expression/dsl.hpp>
#include <mbgl/style/image.hpp>
#include <mbgl/style/layers/fill_extrusion_layer.hpp>
#include <mbgl/style/layers/fill_layer.hpp>
#include <mbgl/style/layers/line_layer.hpp>
#include <mbgl/style/sources/custom_geometry_source.hpp>
#include <mbgl/style/sources/geojson_source.hpp>
#include <mbgl/style/style.hpp>
#include <mbgl/style/transition_options.hpp>
#include <mbgl/util/chrono.hpp>
#include <mbgl/util/geo.hpp>
#include <mbgl/util/io.hpp>
#include <mbgl/util/logging.hpp>
#include <mbgl/util/platform.hpp>
#include <mbgl/util/string.hpp>
#include <mapbox/cheap_ruler.hpp>
#include <mapbox/geometry.hpp>
#include <mapbox/geojson.hpp>
#if MBGL_USE_GLES2
#define GLFW_INCLUDE_ES2
#endif // MBGL_USE_GLES2
#define GL_GLEXT_PROTOTYPES
#include <GLFW/glfw3.h>
#include <cassert>
#include <cstdlib>
#include <fstream>
#include <iostream>
#include <utility>
#if defined(MBGL_RENDER_BACKEND_OPENGL) && !defined(MBGL_LAYER_LOCATION_INDICATOR_DISABLE_ALL)
#include <mbgl/style/layers/location_indicator_layer.hpp>
namespace {
const std::string mbglPuckAssetsPath{MAPBOX_PUCK_ASSETS_PATH};
mbgl::Color premultiply(mbgl::Color c) {
c.r *= c.a;
c.g *= c.a;
c.b *= c.a;
return c;
}
std::array<double, 3> toArray(const mbgl::LatLng &crd) {
return {crd.latitude(), crd.longitude(), 0};
}
} // namespace
#endif
class SnapshotObserver final : public mbgl::MapSnapshotterObserver {
public:
~SnapshotObserver() override = default;
void onDidFinishLoadingStyle() override {
if (didFinishLoadingStyleCallback) {
didFinishLoadingStyleCallback();
}
}
std::function<void()> didFinishLoadingStyleCallback;
};
namespace {
void addFillExtrusionLayer(mbgl::style::Style &style, bool visible) {
using namespace mbgl::style;
using namespace mbgl::style::expression::dsl;
// Satellite-only style does not contain building extrusions data.
if (!style.getSource("composite")) {
return;
}
if (auto layer = style.getLayer("3d-buildings")) {
layer->setVisibility(VisibilityType(!visible));
return;
}
auto extrusionLayer = std::make_unique<FillExtrusionLayer>("3d-buildings", "composite");
extrusionLayer->setSourceLayer("building");
extrusionLayer->setMinZoom(15.0f);
extrusionLayer->setFilter(Filter(eq(get("extrude"), literal("true"))));
extrusionLayer->setFillExtrusionColor(PropertyExpression<mbgl::Color>(interpolate(linear(),
number(get("height")),
0.f,
toColor(literal("#160e23")),
50.f,
toColor(literal("#00615f")),
100.f,
toColor(literal("#55e9ff")))));
extrusionLayer->setFillExtrusionOpacity(0.6f);
extrusionLayer->setFillExtrusionHeight(PropertyExpression<float>(get("height")));
extrusionLayer->setFillExtrusionBase(PropertyExpression<float>(get("min_height")));
style.addLayer(std::move(extrusionLayer));
}
} // namespace
void glfwError(int error, const char *description) {
mbgl::Log::Error(mbgl::Event::OpenGL, "GLFW error (%i): %s", error, description);
assert(false);
}
GLFWView::GLFWView(bool fullscreen_, bool benchmark_, const mbgl::ResourceOptions &options)
: fullscreen(fullscreen_),
benchmark(benchmark_),
snapshotterObserver(std::make_unique<SnapshotObserver>()),
mapResourceOptions(options.clone()) {
glfwSetErrorCallback(glfwError);
std::srand(static_cast<unsigned int>(std::time(nullptr)));
if (!glfwInit()) {
mbgl::Log::Error(mbgl::Event::OpenGL, "failed to initialize glfw");
exit(1);
}
GLFWmonitor *monitor = nullptr;
if (fullscreen) {
monitor = glfwGetPrimaryMonitor();
auto videoMode = glfwGetVideoMode(monitor);
width = videoMode->width;
height = videoMode->height;
}
#if __APPLE__
glfwWindowHint(GLFW_COCOA_GRAPHICS_SWITCHING, GL_TRUE);
#endif
#if MBGL_WITH_EGL
glfwWindowHint(GLFW_CONTEXT_CREATION_API, GLFW_EGL_CONTEXT_API);
#endif
#ifdef DEBUG
glfwWindowHint(GLFW_OPENGL_DEBUG_CONTEXT, GL_TRUE);
#endif
#if MBGL_USE_GLES2
glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
#endif
if (mbgl::gfx::Backend::GetType() != mbgl::gfx::Backend::Type::OpenGL) {
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
}
glfwWindowHint(GLFW_RED_BITS, 8);
glfwWindowHint(GLFW_GREEN_BITS, 8);
glfwWindowHint(GLFW_BLUE_BITS, 8);
glfwWindowHint(GLFW_ALPHA_BITS, 8);
glfwWindowHint(GLFW_STENCIL_BITS, 8);
glfwWindowHint(GLFW_DEPTH_BITS, 16);
window = glfwCreateWindow(width, height, "Mapbox GL", monitor, nullptr);
if (!window) {
glfwTerminate();
mbgl::Log::Error(mbgl::Event::OpenGL, "failed to initialize window");
exit(1);
}
glfwSetWindowUserPointer(window, this);
glfwSetCursorPosCallback(window, onMouseMove);
glfwSetMouseButtonCallback(window, onMouseClick);
glfwSetWindowSizeCallback(window, onWindowResize);
glfwSetFramebufferSizeCallback(window, onFramebufferResize);
glfwSetScrollCallback(window, onScroll);
glfwSetKeyCallback(window, onKey);
glfwSetWindowFocusCallback(window, onWindowFocus);
glfwGetWindowSize(window, &width, &height);
backend = GLFWBackend::Create(window, benchmark);
pixelRatio = static_cast<float>(backend->getSize().width) / width;
glfwMakeContextCurrent(nullptr);
printf("\n");
printf("================================================================================\n");
printf("\n");
printf("- Press `S` to cycle through bundled styles\n");
printf("- Press `X` to reset the transform\n");
printf("- Press `N` to reset north\n");
printf("- Press `R` to enable the route demo\n");
printf("- Press `E` to insert an example building extrusion layer\n");
printf("- Press `O` to toggle online connectivity\n");
printf("- Press `Z` to cycle through north orientations\n");
printf("- Press `X` to cycle through the viewport modes\n");
printf("- Press `I` to delete existing database and re-initialize\n");
printf("- Press `A` to cycle through Mapbox offices in the world + dateline monument\n");
printf("- Press `B` to cycle through the color, stencil, and depth buffer\n");
printf("- Press `D` to cycle through camera bounds: inside, crossing IDL at left, crossing IDL at right, and disabled\n");
printf("- Press `T` to add custom geometry source\n");
printf("- Press `F` to enable feature-state demo\n");
printf("- Press `U` to toggle pitch bounds\n");
printf("- Press `H` to take a snapshot of a current map.\n");
printf("- Press `J` to take a snapshot of a current map with an extrusions overlay.\n");
printf("\n");
printf("- Press `1` through `6` to add increasing numbers of point annotations for testing\n");
printf("- Press `7` through `0` to add increasing numbers of shape annotations for testing\n");
printf("\n");
printf("- Press `Q` to remove annotations\n");
printf("- Press `K` to add a random custom runtime imagery annotation\n");
printf("- Press `L` to add a random line annotation\n");
printf("- Press `W` to pop the last-added annotation off\n");
printf("- Press `P` to pause tile requests\n");
printf("\n");
printf("- Hold `Control` + mouse drag to rotate\n");
printf("- Hold `Shift` + mouse drag to tilt\n");
printf("\n");
printf("- Press `F1` to generate a render test for the current view\n");
printf("\n");
printf("- Press `Tab` to cycle through the map debug options\n");
printf("- Press `Esc` to quit\n");
printf("\n");
printf("================================================================================\n");
printf("\n");
}
GLFWView::~GLFWView() {
glfwDestroyWindow(window);
glfwTerminate();
}
void GLFWView::setMap(mbgl::Map *map_) {
map = map_;
map->addAnnotationImage(makeImage("default_marker", 22, 22, 1));
}
void GLFWView::setRenderFrontend(GLFWRendererFrontend* rendererFrontend_) {
rendererFrontend = rendererFrontend_;
}
mbgl::gfx::RendererBackend &GLFWView::getRendererBackend() {
return backend->getRendererBackend();
}
void GLFWView::onKey(GLFWwindow *window, int key, int /*scancode*/, int action, int mods) {
auto *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
if (action == GLFW_RELEASE) {
if (key != GLFW_KEY_R || key != GLFW_KEY_S) view->animateRouteCallback = nullptr;
switch (key) {
case GLFW_KEY_ESCAPE:
glfwSetWindowShouldClose(window, true);
break;
case GLFW_KEY_TAB:
view->cycleDebugOptions();
break;
case GLFW_KEY_X:
if (!mods)
view->map->jumpTo(
mbgl::CameraOptions().withCenter(mbgl::LatLng{}).withZoom(0.0).withBearing(0.0).withPitch(0.0));
break;
case GLFW_KEY_O:
view->onlineStatusCallback();
break;
case GLFW_KEY_S:
if (view->changeStyleCallback) view->changeStyleCallback();
break;
#if not MBGL_USE_GLES2
case GLFW_KEY_B: {
auto debug = view->map->getDebug();
if (debug & mbgl::MapDebugOptions::StencilClip) {
debug &= ~mbgl::MapDebugOptions::StencilClip;
debug |= mbgl::MapDebugOptions::DepthBuffer;
} else if (debug & mbgl::MapDebugOptions::DepthBuffer) {
debug &= ~mbgl::MapDebugOptions::DepthBuffer;
} else {
debug |= mbgl::MapDebugOptions::StencilClip;
}
view->map->setDebug(debug);
} break;
#endif // MBGL_USE_GLES2
case GLFW_KEY_N:
if (!mods)
view->map->easeTo(mbgl::CameraOptions().withBearing(0.0), mbgl::AnimationOptions {{mbgl::Milliseconds(500)}});
break;
case GLFW_KEY_Z:
view->nextOrientation();
break;
case GLFW_KEY_Q: {
auto result = view->rendererFrontend->getRenderer()->queryPointAnnotations({ {}, { double(view->getSize().width), double(view->getSize().height) } });
printf("visible point annotations: %lu\n", result.size());
} break;
case GLFW_KEY_P:
view->pauseResumeCallback();
break;
case GLFW_KEY_C:
view->clearAnnotations();
break;
case GLFW_KEY_I:
view->resetDatabaseCallback();
break;
case GLFW_KEY_K:
view->addRandomCustomPointAnnotations(1);
break;
case GLFW_KEY_L:
view->addRandomLineAnnotations(1);
break;
case GLFW_KEY_A: {
// XXX Fix precision loss in flyTo:
// https://github.com/mapbox/mapbox-gl-native/issues/4298
static const std::vector<mbgl::LatLng> places = {
mbgl::LatLng { -16.796665, -179.999983 }, // Dateline monument
mbgl::LatLng { 12.9810542, 77.6345551 }, // Mapbox Bengaluru, India
mbgl::LatLng { -13.15607,-74.21773 }, // Mapbox Peru
mbgl::LatLng { 37.77572, -122.4158818 }, // Mapbox SF, USA
mbgl::LatLng { 38.91318,-77.03255 }, // Mapbox DC, USA
};
static size_t nextPlace = 0;
mbgl::CameraOptions cameraOptions;
cameraOptions.center = places[nextPlace++];
cameraOptions.zoom = 20;
cameraOptions.pitch = 30;
mbgl::AnimationOptions animationOptions(mbgl::Seconds(10));
view->map->flyTo(cameraOptions, animationOptions);
nextPlace = nextPlace % places.size();
} break;
case GLFW_KEY_R: {
view->show3DExtrusions = true;
view->toggle3DExtrusions(view->show3DExtrusions);
if (view->animateRouteCallback) break;
view->animateRouteCallback = [](mbgl::Map* routeMap) {
static mapbox::cheap_ruler::CheapRuler ruler { 40.7 }; // New York
static mapbox::geojson::geojson route { mapbox::geojson::parse(mbgl::platform::glfw::route) };
const auto& geometry = route.get<mapbox::geometry::geometry<double>>();
const auto& lineString = geometry.get<mapbox::geometry::line_string<double>>();
static double routeDistance = ruler.lineDistance(lineString);
static double routeProgress = 0;
routeProgress += 0.0005;
if (routeProgress > 1.0) {
routeProgress = 0.0;
}
auto camera = routeMap->getCameraOptions();
auto point = ruler.along(lineString, routeProgress * routeDistance);
const mbgl::LatLng center { point.y, point.x };
auto latLng = *camera.center;
double bearing = ruler.bearing({ latLng.longitude(), latLng.latitude() }, point);
double easing = bearing - *camera.bearing;
easing += easing > 180.0 ? -360.0 : easing < -180 ? 360.0 : 0;
bearing = *camera.bearing + (easing / 20);
routeMap->jumpTo(mbgl::CameraOptions().withCenter(center).withZoom(18.0).withBearing(bearing).withPitch(60.0));
};
view->animateRouteCallback(view->map);
} break;
case GLFW_KEY_E:
view->toggle3DExtrusions(!view->show3DExtrusions);
break;
case GLFW_KEY_D: {
static const std::vector<mbgl::LatLngBounds> bounds = {
mbgl::LatLngBounds::hull(mbgl::LatLng{-45.0, -170.0}, mbgl::LatLng{45.0, 170.0}), // inside
mbgl::LatLngBounds::hull(mbgl::LatLng{-45.0, -200.0}, mbgl::LatLng{45.0, -160.0}), // left IDL
mbgl::LatLngBounds::hull(mbgl::LatLng{-45.0, 160.0}, mbgl::LatLng{45.0, 200.0}), // right IDL
mbgl::LatLngBounds()};
static size_t nextBound = 0u;
static mbgl::AnnotationID boundAnnotationID = std::numeric_limits<mbgl::AnnotationID>::max();
mbgl::LatLngBounds bound = bounds[nextBound++];
nextBound = nextBound % bounds.size();
view->map->setBounds(mbgl::BoundOptions().withLatLngBounds(bound));
if (bound == mbgl::LatLngBounds()) {
view->map->removeAnnotation(boundAnnotationID);
boundAnnotationID = std::numeric_limits<mbgl::AnnotationID>::max();
} else {
mbgl::Polygon<double> rect;
rect.push_back({
mbgl::Point<double>{ bound.west(), bound.north() },
mbgl::Point<double>{ bound.east(), bound.north() },
mbgl::Point<double>{ bound.east(), bound.south() },
mbgl::Point<double>{ bound.west(), bound.south() },
});
auto boundAnnotation = mbgl::FillAnnotation { rect, 0.5f, { view->makeRandomColor() }, { view->makeRandomColor() } };
if (boundAnnotationID == std::numeric_limits<mbgl::AnnotationID>::max()) {
boundAnnotationID = view->map->addAnnotation(boundAnnotation);
} else {
view->map->updateAnnotation(boundAnnotationID, boundAnnotation);
}
}
} break;
case GLFW_KEY_T:
view->toggleCustomSource();
break;
case GLFW_KEY_F: {
using namespace mbgl;
using namespace mbgl::style;
using namespace mbgl::style::expression::dsl;
auto &style = view->map->getStyle();
if (!style.getSource("states")) {
std::string url = "https://docs.mapbox.com/mapbox-gl-js/assets/us_states.geojson";
auto source = std::make_unique<GeoJSONSource>("states");
source->setURL(url);
style.addSource(std::move(source));
mbgl::CameraOptions cameraOptions;
cameraOptions.center = mbgl::LatLng{42.619626, -103.523181};
cameraOptions.zoom = 3;
cameraOptions.pitch = 0;
cameraOptions.bearing = 0;
view->map->jumpTo(cameraOptions);
}
auto layer = style.getLayer("state-fills");
if (!layer) {
auto fillLayer = std::make_unique<FillLayer>("state-fills", "states");
fillLayer->setFillColor(mbgl::Color{0.0, 0.0, 1.0, 0.5});
fillLayer->setFillOpacity(PropertyExpression<float>(
createExpression(R"(["case", ["boolean", ["feature-state", "hover"], false], 1, 0.5])")));
style.addLayer(std::move(fillLayer));
} else {
layer->setVisibility(layer->getVisibility() == mbgl::style::VisibilityType::Visible
? mbgl::style::VisibilityType::None
: mbgl::style::VisibilityType::Visible);
}
layer = style.getLayer("state-borders");
if (!layer) {
auto borderLayer = std::make_unique<LineLayer>("state-borders", "states");
borderLayer->setLineColor(mbgl::Color{0.0, 0.0, 1.0, 1.0});
borderLayer->setLineWidth(PropertyExpression<float>(
createExpression(R"(["case", ["boolean", ["feature-state", "hover"], false], 2, 1])")));
style.addLayer(std::move(borderLayer));
} else {
layer->setVisibility(layer->getVisibility() == mbgl::style::VisibilityType::Visible
? mbgl::style::VisibilityType::None
: mbgl::style::VisibilityType::Visible);
}
} break;
case GLFW_KEY_F1: {
bool success = TestWriter()
.withInitialSize(mbgl::Size(view->width, view->height))
.withStyle(view->map->getStyle())
.withCameraOptions(view->map->getCameraOptions())
.write(view->testDirectory);
if (success) {
mbgl::Log::Info(mbgl::Event::General, "Render test created!");
} else {
mbgl::Log::Error(mbgl::Event::General,
"Fail to create render test! Base directory does not exist or permission denied.");
}
} break;
case GLFW_KEY_U: {
auto bounds = view->map->getBounds();
if (bounds.minPitch == mbgl::util::PITCH_MIN * mbgl::util::RAD2DEG &&
bounds.maxPitch == mbgl::util::PITCH_MAX * mbgl::util::RAD2DEG) {
mbgl::Log::Info(mbgl::Event::General, "Limiting pitch bounds to [30, 40] degrees");
view->map->setBounds(mbgl::BoundOptions().withMinPitch(30).withMaxPitch(40));
} else {
mbgl::Log::Info(mbgl::Event::General, "Resetting pitch bounds to [0, 60] degrees");
view->map->setBounds(mbgl::BoundOptions().withMinPitch(0).withMaxPitch(60));
}
} break;
case GLFW_KEY_H: {
view->makeSnapshot();
} break;
case GLFW_KEY_J: {
// Snapshot with overlay
view->makeSnapshot(true);
} break;
case GLFW_KEY_G: {
view->toggleLocationIndicatorLayer();
} break;
}
}
if (action == GLFW_RELEASE || action == GLFW_REPEAT) {
switch (key) {
case GLFW_KEY_W: view->popAnnotation(); break;
case GLFW_KEY_1: view->addRandomPointAnnotations(1); break;
case GLFW_KEY_2: view->addRandomPointAnnotations(10); break;
case GLFW_KEY_3: view->addRandomPointAnnotations(100); break;
case GLFW_KEY_4: view->addRandomPointAnnotations(1000); break;
case GLFW_KEY_5: view->addRandomPointAnnotations(10000); break;
case GLFW_KEY_6: view->addRandomPointAnnotations(100000); break;
case GLFW_KEY_7: view->addRandomShapeAnnotations(1); break;
case GLFW_KEY_8: view->addRandomShapeAnnotations(10); break;
case GLFW_KEY_9: view->addRandomShapeAnnotations(100); break;
case GLFW_KEY_0: view->addRandomShapeAnnotations(1000); break;
case GLFW_KEY_M: view->addAnimatedAnnotation(); break;
}
}
}
mbgl::Color GLFWView::makeRandomColor() const {
const float r = 1.0f * (float(std::rand()) / RAND_MAX);
const float g = 1.0f * (float(std::rand()) / RAND_MAX);
const float b = 1.0f * (float(std::rand()) / RAND_MAX);
return { r, g, b, 1.0f };
}
mbgl::Point<double> GLFWView::makeRandomPoint() const {
const double x = width * double(std::rand()) / RAND_MAX;
const double y = height * double(std::rand()) / RAND_MAX;
mbgl::LatLng latLng = map->latLngForPixel({ x, y });
return { latLng.longitude(), latLng.latitude() };
}
std::unique_ptr<mbgl::style::Image>
GLFWView::makeImage(const std::string& id, int width, int height, float pixelRatio) {
const int r = 255 * (double(std::rand()) / RAND_MAX);
const int g = 255 * (double(std::rand()) / RAND_MAX);
const int b = 255 * (double(std::rand()) / RAND_MAX);
const int w = std::ceil(pixelRatio * width);
const int h = std::ceil(pixelRatio * height);
mbgl::PremultipliedImage image({ static_cast<uint32_t>(w), static_cast<uint32_t>(h) });
auto data = reinterpret_cast<uint32_t*>(image.data.get());
const int dist = (w / 2) * (w / 2);
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
const int dx = x - w / 2;
const int dy = y - h / 2;
const int diff = dist - (dx * dx + dy * dy);
if (diff > 0) {
const int a = std::min(0xFF, diff) * 0xFF / dist;
// Premultiply the rgb values with alpha
data[w * y + x] =
(a << 24) | ((a * r / 0xFF) << 16) | ((a * g / 0xFF) << 8) | (a * b / 0xFF);
}
}
}
return std::make_unique<mbgl::style::Image>(id, std::move(image), pixelRatio);
}
void GLFWView::nextOrientation() {
using NO = mbgl::NorthOrientation;
switch (map->getMapOptions().northOrientation()) {
case NO::Upwards: map->setNorthOrientation(NO::Rightwards); break;
case NO::Rightwards: map->setNorthOrientation(NO::Downwards); break;
case NO::Downwards: map->setNorthOrientation(NO::Leftwards); break;
default: map->setNorthOrientation(NO::Upwards); break;
}
}
void GLFWView::addRandomCustomPointAnnotations(int count) {
for (int i = 0; i < count; i++) {
static int spriteID = 1;
const auto name = std::string{ "marker-" } + mbgl::util::toString(spriteID++);
map->addAnnotationImage(makeImage(name, 22, 22, 1));
spriteIDs.push_back(name);
annotationIDs.push_back(map->addAnnotation(mbgl::SymbolAnnotation { makeRandomPoint(), name }));
}
}
void GLFWView::addRandomPointAnnotations(int count) {
for (int i = 0; i < count; ++i) {
annotationIDs.push_back(map->addAnnotation(mbgl::SymbolAnnotation { makeRandomPoint(), "default_marker" }));
}
}
void GLFWView::addRandomLineAnnotations(int count) {
for (int i = 0; i < count; ++i) {
mbgl::LineString<double> lineString;
for (int j = 0; j < 3; ++j) {
lineString.push_back(makeRandomPoint());
}
annotationIDs.push_back(map->addAnnotation(mbgl::LineAnnotation { lineString, 1.0f, 2.0f, { makeRandomColor() } }));
}
}
void GLFWView::addRandomShapeAnnotations(int count) {
for (int i = 0; i < count; ++i) {
mbgl::Polygon<double> triangle;
triangle.push_back({ makeRandomPoint(), makeRandomPoint(), makeRandomPoint() });
annotationIDs.push_back(map->addAnnotation(mbgl::FillAnnotation { triangle, 0.5f, { makeRandomColor() }, { makeRandomColor() } }));
}
}
void GLFWView::addAnimatedAnnotation() {
const double started = glfwGetTime();
animatedAnnotationIDs.push_back(map->addAnnotation(mbgl::SymbolAnnotation { { 0, 0 } , "default_marker" }));
animatedAnnotationAddedTimes.push_back(started);
}
void GLFWView::updateAnimatedAnnotations() {
const double time = glfwGetTime();
for (size_t i = 0; i < animatedAnnotationIDs.size(); i++) {
auto dt = time - animatedAnnotationAddedTimes[i];
const double period = 10;
const double x = dt / period * 360 - 180;
const double y = std::sin(dt/ period * M_PI * 2.0) * 80;
map->updateAnnotation(animatedAnnotationIDs[i], mbgl::SymbolAnnotation { {x, y }, "default_marker" });
}
}
void GLFWView::cycleDebugOptions() {
auto debug = map->getDebug();
#if not MBGL_USE_GLES2
if (debug & mbgl::MapDebugOptions::StencilClip)
debug = mbgl::MapDebugOptions::NoDebug;
else if (debug & mbgl::MapDebugOptions::Overdraw)
debug = mbgl::MapDebugOptions::StencilClip;
#else
if (debug & mbgl::MapDebugOptions::Overdraw) debug = mbgl::MapDebugOptions::NoDebug;
#endif // MBGL_USE_GLES2
else if (debug & mbgl::MapDebugOptions::Collision)
debug = mbgl::MapDebugOptions::Overdraw;
else if (debug & mbgl::MapDebugOptions::Timestamps)
debug = debug | mbgl::MapDebugOptions::Collision;
else if (debug & mbgl::MapDebugOptions::ParseStatus)
debug = debug | mbgl::MapDebugOptions::Timestamps;
else if (debug & mbgl::MapDebugOptions::TileBorders)
debug = debug | mbgl::MapDebugOptions::ParseStatus;
else
debug = mbgl::MapDebugOptions::TileBorders;
map->setDebug(debug);
}
void GLFWView::clearAnnotations() {
for (const auto& id : annotationIDs) {
map->removeAnnotation(id);
}
annotationIDs.clear();
for (const auto& id : animatedAnnotationIDs) {
map->removeAnnotation(id);
}
animatedAnnotationIDs.clear();
}
void GLFWView::popAnnotation() {
if (annotationIDs.empty()) {
return;
}
map->removeAnnotation(annotationIDs.back());
annotationIDs.pop_back();
}
void GLFWView::makeSnapshot(bool withOverlay) {
if (!snapshotter || snapshotter->getStyleURL() != map->getStyle().getURL()) {
snapshotter = std::make_unique<mbgl::MapSnapshotter>(
map->getMapOptions().size(), map->getMapOptions().pixelRatio(), mapResourceOptions, *snapshotterObserver);
snapshotter->setStyleURL(map->getStyle().getURL());
}
auto snapshot = [&] {
snapshotter->setCameraOptions(map->getCameraOptions());
snapshotter->snapshot([](const std::exception_ptr &ptr,
mbgl::PremultipliedImage image,
const mbgl::MapSnapshotter::Attributions &,
const mbgl::MapSnapshotter::PointForFn &,
const mbgl::MapSnapshotter::LatLngForFn &) {
if (!ptr) {
mbgl::Log::Info(mbgl::Event::General,
"Made snapshot './snapshot.png' with size w:%dpx h:%dpx",
image.size.width,
image.size.height);
std::ofstream file("./snapshot.png");
file << mbgl::encodePNG(image);
} else {
mbgl::Log::Error(mbgl::Event::General, "Failed to make a snapshot!");
}
});
};
if (withOverlay) {
snapshotterObserver->didFinishLoadingStyleCallback = [&] {
addFillExtrusionLayer(snapshotter->getStyle(), withOverlay);
snapshot();
};
} else {
snapshot();
}
}
void GLFWView::onScroll(GLFWwindow *window, double /*xOffset*/, double yOffset) {
auto *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
double delta = yOffset * 40;
bool isWheel = delta != 0 && std::fmod(delta, 4.000244140625) == 0;
double absDelta = delta < 0 ? -delta : delta;
double scale = 2.0 / (1.0 + std::exp(-absDelta / 100.0));
// Make the scroll wheel a bit slower.
if (!isWheel) {
scale = (scale - 1.0) / 2.0 + 1.0;
}
// Zooming out.
if (delta < 0 && scale != 0) {
scale = 1.0 / scale;
}
view->map->scaleBy(scale, mbgl::ScreenCoordinate { view->lastX, view->lastY });
#if defined(MBGL_RENDER_BACKEND_OPENGL) && !defined(MBGL_LAYER_CUSTOM_DISABLE_ALL)
if (view->puck && view->puckFollowsCameraCenter) {
mbgl::LatLng mapCenter = view->map->getCameraOptions().center.value();
view->puck->setLocation(toArray(mapCenter));
}
#endif
}
void GLFWView::onWindowResize(GLFWwindow *window, int width, int height) {
auto *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
view->width = width;
view->height = height;
view->map->setSize({ static_cast<uint32_t>(view->width), static_cast<uint32_t>(view->height) });
}
void GLFWView::onFramebufferResize(GLFWwindow *window, int width, int height) {
auto *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
view->backend->setSize({ static_cast<uint32_t>(width), static_cast<uint32_t>(height) });
// This is only triggered when the framebuffer is resized, but not the window. It can
// happen when you move the window between screens with a different pixel ratio.
// We are forcing a repaint my invalidating the view, which triggers a rerender with the
// new framebuffer dimensions.
view->invalidate();
}
void GLFWView::onMouseClick(GLFWwindow *window, int button, int action, int modifiers) {
auto *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
if (button == GLFW_MOUSE_BUTTON_RIGHT ||
(button == GLFW_MOUSE_BUTTON_LEFT && modifiers & GLFW_MOD_CONTROL)) {
view->rotating = action == GLFW_PRESS;
view->map->setGestureInProgress(view->rotating);
} else if (button == GLFW_MOUSE_BUTTON_LEFT && (modifiers & GLFW_MOD_SHIFT)) {
view->pitching = action == GLFW_PRESS;
view->map->setGestureInProgress(view->pitching);
} else if (button == GLFW_MOUSE_BUTTON_LEFT) {
view->tracking = action == GLFW_PRESS;
view->map->setGestureInProgress(view->tracking);
if (action == GLFW_RELEASE) {
double now = glfwGetTime();
if (now - view->lastClick < 0.4 /* ms */) {
if (modifiers & GLFW_MOD_SHIFT) {
view->map->scaleBy(0.5, mbgl::ScreenCoordinate { view->lastX, view->lastY }, mbgl::AnimationOptions{{mbgl::Milliseconds(500)}});
} else {
view->map->scaleBy(2.0, mbgl::ScreenCoordinate { view->lastX, view->lastY }, mbgl::AnimationOptions{{mbgl::Milliseconds(500)}});
}
}
view->lastClick = now;
}
}
}
void GLFWView::onMouseMove(GLFWwindow *window, double x, double y) {
auto *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
if (view->tracking) {
const double dx = x - view->lastX;
const double dy = y - view->lastY;
if (dx || dy) {
view->map->moveBy(mbgl::ScreenCoordinate { dx, dy });
}
} else if (view->rotating) {
view->map->rotateBy({ view->lastX, view->lastY }, { x, y });
} else if (view->pitching) {
const double dy = y - view->lastY;
if (dy) {
view->map->pitchBy(dy / 2);
}
}
view->lastX = x;
view->lastY = y;
#if defined(MBGL_RENDER_BACKEND_OPENGL) && !defined(MBGL_LAYER_CUSTOM_DISABLE_ALL)
if (view->puck && view->puckFollowsCameraCenter) {
mbgl::LatLng mapCenter = view->map->getCameraOptions().center.value();
view->puck->setLocation(toArray(mapCenter));
}
#endif
auto &style = view->map->getStyle();
if (style.getLayer("state-fills")) {
auto screenCoordinate = mbgl::ScreenCoordinate{view->lastX, view->lastY};
const mbgl::RenderedQueryOptions queryOptions({{{"state-fills"}}, {}});
auto result = view->rendererFrontend->getRenderer()->queryRenderedFeatures(screenCoordinate, queryOptions);
using namespace mbgl;
FeatureState newState;
if (!result.empty()) {
FeatureIdentifier id = result[0].id;
optional<std::string> idStr = featureIDtoString(id);
if (idStr) {
if (view->featureID && (*view->featureID != *idStr)) {
newState["hover"] = false;
view->rendererFrontend->getRenderer()->setFeatureState("states", {}, *view->featureID, newState);
view->featureID = nullopt;
}
if (!view->featureID) {
newState["hover"] = true;
view->featureID = featureIDtoString(id);
view->rendererFrontend->getRenderer()->setFeatureState("states", {}, *view->featureID, newState);
}
}
} else {
if (view->featureID) {
newState["hover"] = false;
view->rendererFrontend->getRenderer()->setFeatureState("states", {}, *view->featureID, newState);
view->featureID = nullopt;
}
}
view->invalidate();
}
}
void GLFWView::onWindowFocus(GLFWwindow *window, int focused) {
if (focused == GLFW_FALSE) { // Focus lost.
auto *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
view->rendererFrontend->getRenderer()->reduceMemoryUse();
}
}
void GLFWView::run() {
auto callback = [&] {
if (glfwWindowShouldClose(window)) {
runLoop.stop();
return;
}
glfwPollEvents();
if (dirty && rendererFrontend) {
dirty = false;
const double started = glfwGetTime();
if (animateRouteCallback)
animateRouteCallback(map);
updateAnimatedAnnotations();
mbgl::gfx::BackendScope scope { backend->getRendererBackend() };
rendererFrontend->render();
report(1000 * (glfwGetTime() - started));
if (benchmark) {
invalidate();
}
}
};
frameTick.start(mbgl::Duration::zero(), mbgl::Milliseconds(1000 / 60), callback);
#if defined(__APPLE__)
while (!glfwWindowShouldClose(window)) runLoop.run();
#else
runLoop.run();
#endif
}
float GLFWView::getPixelRatio() const {
return pixelRatio;
}
mbgl::Size GLFWView::getSize() const {
return { static_cast<uint32_t>(width), static_cast<uint32_t>(height) };
}
void GLFWView::invalidate() {
dirty = true;
glfwPostEmptyEvent();
}
void GLFWView::report(float duration) {
frames++;
frameTime += duration;
const double currentTime = glfwGetTime();
if (currentTime - lastReported >= 1) {
frameTime /= frames;
mbgl::Log::Info(mbgl::Event::OpenGL, "Frame time: %6.2fms (%6.2f fps)", frameTime,
1000 / frameTime);
frames = 0;
frameTime = 0;
lastReported = currentTime;
}
}
void GLFWView::setChangeStyleCallback(std::function<void()> callback) {
changeStyleCallback = std::move(callback);
}
void GLFWView::setShouldClose() {
glfwSetWindowShouldClose(window, true);
glfwPostEmptyEvent();
}
void GLFWView::setWindowTitle(const std::string& title) {
glfwSetWindowTitle(window, (std::string { "Mapbox GL: " } + title).c_str());
}
void GLFWView::onDidFinishLoadingStyle() {
#if defined(MBGL_RENDER_BACKEND_OPENGL) && !defined(MBGL_LAYER_CUSTOM_DISABLE_ALL)
puck = nullptr;
#endif
if (show3DExtrusions) {
toggle3DExtrusions(show3DExtrusions);
}
}
void GLFWView::toggle3DExtrusions(bool visible) {
show3DExtrusions = visible;
addFillExtrusionLayer(map->getStyle(), show3DExtrusions);
}
void GLFWView::toggleCustomSource() {
if (!map->getStyle().getSource("custom")) {
mbgl::style::CustomGeometrySource::Options options;
options.cancelTileFunction = [](const mbgl::CanonicalTileID&) {};
options.fetchTileFunction = [&](const mbgl::CanonicalTileID& tileID) {
double gridSpacing = 0.1;
mbgl::FeatureCollection features;
const mbgl::LatLngBounds bounds(tileID);
for (double y = ceil(bounds.north() / gridSpacing) * gridSpacing; y >= floor(bounds.south() / gridSpacing) * gridSpacing; y -= gridSpacing) {
mapbox::geojson::line_string gridLine;
gridLine.emplace_back(bounds.west(), y);
gridLine.emplace_back(bounds.east(), y);
features.emplace_back(gridLine);
}
for (double x = floor(bounds.west() / gridSpacing) * gridSpacing; x <= ceil(bounds.east() / gridSpacing) * gridSpacing; x += gridSpacing) {
mapbox::geojson::line_string gridLine;
gridLine.emplace_back(x, bounds.south());
gridLine.emplace_back(x, bounds.north());
features.emplace_back(gridLine);
}
auto source = static_cast<mbgl::style::CustomGeometrySource *>(map->getStyle().getSource("custom"));
if (source) {
source->setTileData(tileID, features);
source->invalidateTile(tileID);
}
};
map->getStyle().addSource(std::make_unique<mbgl::style::CustomGeometrySource>("custom", options));
}
auto* layer = map->getStyle().getLayer("grid");
if (!layer) {
auto lineLayer = std::make_unique<mbgl::style::LineLayer>("grid", "custom");
lineLayer->setLineColor(mbgl::Color{ 1.0, 0.0, 0.0, 1.0 });
map->getStyle().addLayer(std::move(lineLayer));
} else {
layer->setVisibility(layer->getVisibility() == mbgl::style::VisibilityType::Visible ?
mbgl::style::VisibilityType::None : mbgl::style::VisibilityType::Visible);
}
}
void GLFWView::toggleLocationIndicatorLayer() {
#if defined(MBGL_RENDER_BACKEND_OPENGL) && !defined(MBGL_LAYER_LOCATION_INDICATOR_DISABLE_ALL)
puck = static_cast<mbgl::style::LocationIndicatorLayer *>(map->getStyle().getLayer("puck"));
static const mbgl::LatLng puckLocation{35.683389, 139.76525}; // A location on the crossing of 4 tiles
if (puck == nullptr) {
auto puckLayer = std::make_unique<mbgl::style::LocationIndicatorLayer>("puck");
puckLayer->setLocationTransition(mbgl::style::TransitionOptions(
mbgl::Duration::zero(), mbgl::Duration::zero())); // Note: This is used here for demo purpose.
// SDKs should not use this, or else the location
// will "jump" to positions.
puckLayer->setLocation(toArray(puckLocation));
puckLayer->setAccuracyRadius(50);
puckLayer->setAccuracyRadiusColor(
premultiply(mbgl::Color{0.0, 1.0, 0.0, 0.2})); // Note: these must be fed premultiplied
puckLayer->setBearingTransition(mbgl::style::TransitionOptions(mbgl::Duration::zero(), mbgl::Duration::zero()));
puckLayer->setBearing(mbgl::style::Rotation(0.0));
puckLayer->setAccuracyRadiusBorderColor(premultiply(mbgl::Color{0.0, 1.0, 0.2, 0.4}));
puckLayer->setTopImageSize(0.18);
puckLayer->setBearingImageSize(0.26);
puckLayer->setShadowImageSize(0.2);
puckLayer->setImageTiltDisplacement(7.0f); // set to 0 for a "flat" puck
puckLayer->setPerspectiveCompensation(0.9);
map->getStyle().addImage(std::make_unique<mbgl::style::Image>(
"puck.png", mbgl::decodeImage(mbgl::util::read_file(mbglPuckAssetsPath + "puck.png")), 1.0));
map->getStyle().addImage(std::make_unique<mbgl::style::Image>(
"puck_shadow.png", mbgl::decodeImage(mbgl::util::read_file(mbglPuckAssetsPath + "puck_shadow.png")), 1.0));
map->getStyle().addImage(std::make_unique<mbgl::style::Image>(
"puck_hat.png", mbgl::decodeImage(mbgl::util::read_file(mbglPuckAssetsPath + "puck_hat.png")), 1.0));
puckLayer->setBearingImage(mbgl::style::expression::Image("puck.png"));
puckLayer->setShadowImage(mbgl::style::expression::Image("puck_shadow.png"));
puckLayer->setTopImage(mbgl::style::expression::Image("puck_hat.png"));
puck = puckLayer.get();
map->getStyle().addLayer(std::move(puckLayer));
} else {
bool visible = puck->getVisibility() == mbgl::style::VisibilityType::Visible;
if (visible) {
if (!puckFollowsCameraCenter) {
mbgl::LatLng mapCenter = map->getCameraOptions().center.value();
puck->setLocation(toArray(mapCenter));
puckFollowsCameraCenter = true;
} else {
puckFollowsCameraCenter = false;
puck->setVisibility(mbgl::style::VisibilityType(mbgl::style::VisibilityType::None));
}
} else {
puck->setLocation(toArray(puckLocation));
puck->setVisibility(mbgl::style::VisibilityType(mbgl::style::VisibilityType::Visible));
puckFollowsCameraCenter = false;
}
}
#endif
}
using Nanoseconds = std::chrono::nanoseconds;
void GLFWView::onWillStartRenderingFrame() {
#if defined(MBGL_RENDER_BACKEND_OPENGL) && !defined(MBGL_LAYER_LOCATION_INDICATOR_DISABLE_ALL)
puck = static_cast<mbgl::style::LocationIndicatorLayer *>(map->getStyle().getLayer("puck"));
if (puck) {
uint64_t ns = mbgl::Clock::now().time_since_epoch().count();
const double bearing = double(ns % 2000000000) / 2000000000.0 * 360.0;
puck->setBearing(mbgl::style::Rotation(bearing));
}
#endif
}
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