750c72f324
The location under your finger stays under your finger as you pan. The location you double tap to zoom stays at the same point. The location at the center of a pinch zoom stays at the center. The location at the center of a rotation stays at the center.
511 lines
16 KiB
C++
511 lines
16 KiB
C++
#include <mbgl/annotation/point_annotation.hpp>
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#include <mbgl/annotation/shape_annotation.hpp>
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#include <mbgl/annotation/sprite_image.hpp>
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#include <mbgl/platform/default/glfw_view.hpp>
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#include <mbgl/platform/gl.hpp>
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#include <mbgl/platform/log.hpp>
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#include <mbgl/util/gl_helper.hpp>
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#include <mbgl/util/string.hpp>
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#include <cassert>
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#include <cstdlib>
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void glfwError(int error, const char *description) {
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mbgl::Log::Error(mbgl::Event::OpenGL, "GLFW error (%i): %s", error, description);
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assert(false);
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}
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GLFWView::GLFWView(bool fullscreen_, bool benchmark_)
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: fullscreen(fullscreen_), benchmark(benchmark_) {
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glfwSetErrorCallback(glfwError);
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std::srand(std::time(0));
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if (!glfwInit()) {
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mbgl::Log::Error(mbgl::Event::OpenGL, "failed to initialize glfw");
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exit(1);
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}
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GLFWmonitor *monitor = nullptr;
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if (fullscreen) {
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monitor = glfwGetPrimaryMonitor();
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auto videoMode = glfwGetVideoMode(monitor);
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width = videoMode->width;
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height = videoMode->height;
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}
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#ifdef DEBUG
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glfwWindowHint(GLFW_OPENGL_DEBUG_CONTEXT, GL_TRUE);
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#endif
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#ifdef GL_ES_VERSION_2_0
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glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
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#endif
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glfwWindowHint(GLFW_RED_BITS, 8);
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glfwWindowHint(GLFW_GREEN_BITS, 8);
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glfwWindowHint(GLFW_BLUE_BITS, 8);
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glfwWindowHint(GLFW_ALPHA_BITS, 8);
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glfwWindowHint(GLFW_STENCIL_BITS, 8);
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glfwWindowHint(GLFW_DEPTH_BITS, 16);
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window = glfwCreateWindow(width, height, "Mapbox GL", monitor, NULL);
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if (!window) {
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glfwTerminate();
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mbgl::Log::Error(mbgl::Event::OpenGL, "failed to initialize window");
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exit(1);
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}
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glfwSetWindowUserPointer(window, this);
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glfwMakeContextCurrent(window);
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if (benchmark) {
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// Disables vsync on platforms that support it.
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glfwSwapInterval(0);
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} else {
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glfwSwapInterval(1);
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}
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glfwSetCursorPosCallback(window, onMouseMove);
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glfwSetMouseButtonCallback(window, onMouseClick);
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glfwSetWindowSizeCallback(window, onWindowResize);
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glfwSetFramebufferSizeCallback(window, onFramebufferResize);
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glfwSetScrollCallback(window, onScroll);
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glfwSetKeyCallback(window, onKey);
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mbgl::gl::InitializeExtensions(glfwGetProcAddress);
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glfwGetWindowSize(window, &width, &height);
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glfwGetFramebufferSize(window, &fbWidth, &fbHeight);
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pixelRatio = static_cast<float>(fbWidth) / width;
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glfwMakeContextCurrent(nullptr);
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}
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GLFWView::~GLFWView() {
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glfwDestroyWindow(window);
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glfwTerminate();
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}
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void GLFWView::initialize(mbgl::Map *map_) {
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View::initialize(map_);
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}
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void GLFWView::onKey(GLFWwindow *window, int key, int /*scancode*/, int action, int mods) {
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GLFWView *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
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if (action == GLFW_RELEASE) {
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switch (key) {
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case GLFW_KEY_ESCAPE:
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glfwSetWindowShouldClose(window, true);
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break;
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case GLFW_KEY_TAB:
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view->map->toggleDebug();
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break;
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case GLFW_KEY_C:
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view->map->toggleCollisionDebug();
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break;
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case GLFW_KEY_X:
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if (!mods)
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view->map->resetPosition();
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break;
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case GLFW_KEY_S:
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if (view->changeStyleCallback)
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view->changeStyleCallback();
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break;
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case GLFW_KEY_R:
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if (!mods) {
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view->map->setDefaultTransitionDuration(std::chrono::milliseconds(300));
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if (view->map->hasClass("night")) {
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view->map->removeClass("night");
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} else {
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view->map->addClass("night");
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}
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}
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break;
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case GLFW_KEY_N:
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if (!mods)
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view->map->resetNorth();
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break;
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case GLFW_KEY_Q:
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view->clearAnnotations();
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break;
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case GLFW_KEY_P: {
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view->addRandomCustomPointAnnotations(1);
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} break;
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}
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}
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if (action == GLFW_RELEASE || action == GLFW_REPEAT) {
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switch (key) {
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case GLFW_KEY_W: view->popAnnotation(); break;
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case GLFW_KEY_1: view->addRandomPointAnnotations(1); break;
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case GLFW_KEY_2: view->addRandomPointAnnotations(10); break;
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case GLFW_KEY_3: view->addRandomPointAnnotations(100); break;
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case GLFW_KEY_4: view->addRandomPointAnnotations(1000); break;
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case GLFW_KEY_5: view->addRandomPointAnnotations(10000); break;
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case GLFW_KEY_6: view->addRandomPointAnnotations(100000); break;
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case GLFW_KEY_7: view->addRandomShapeAnnotations(1); break;
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case GLFW_KEY_8: view->addRandomShapeAnnotations(10); break;
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case GLFW_KEY_9: view->addRandomShapeAnnotations(100); break;
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case GLFW_KEY_0: view->addRandomShapeAnnotations(1000); break;
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}
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}
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}
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mbgl::LatLng GLFWView::makeRandomPoint() const {
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const auto sw = map->latLngForPixel({ 0, 0 });
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const auto ne = map->latLngForPixel({ double(width), double(height) });
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const double lon = sw.longitude + (ne.longitude - sw.longitude) * (double(std::rand()) / RAND_MAX);
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const double lat = sw.latitude + (ne.latitude - sw.latitude) * (double(std::rand()) / RAND_MAX);
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return { lat, lon };
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}
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std::shared_ptr<const mbgl::SpriteImage>
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GLFWView::makeSpriteImage(int width, int height, float pixelRatio) {
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const int r = 255 * (double(std::rand()) / RAND_MAX);
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const int g = 255 * (double(std::rand()) / RAND_MAX);
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const int b = 255 * (double(std::rand()) / RAND_MAX);
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const int w = std::ceil(pixelRatio * width);
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const int h = std::ceil(pixelRatio * height);
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std::string pixels(w * h * 4, '\x00');
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auto data = reinterpret_cast<uint32_t*>(const_cast<char*>(pixels.data()));
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const int dist = (w / 2) * (w / 2);
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for (int y = 0; y < h; y++) {
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for (int x = 0; x < w; x++) {
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const int dx = x - w / 2;
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const int dy = y - h / 2;
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const int diff = dist - (dx * dx + dy * dy);
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if (diff > 0) {
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const int a = std::min(0xFF, diff) * 0xFF / dist;
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// Premultiply the rgb values with alpha
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data[w * y + x] =
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(a << 24) | ((a * r / 0xFF) << 16) | ((a * g / 0xFF) << 8) | (a * b / 0xFF);
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}
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}
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}
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return std::make_shared<mbgl::SpriteImage>(width, height, pixelRatio, std::move(pixels));
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}
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void GLFWView::addRandomCustomPointAnnotations(int count) {
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std::vector<mbgl::PointAnnotation> points;
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for (int i = 0; i < count; i++) {
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static int spriteID = 1;
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const auto name = std::string{ "marker-" } + mbgl::util::toString(spriteID++);
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map->setSprite(name, makeSpriteImage(22, 22, 1));
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spriteIDs.push_back(name);
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points.emplace_back(makeRandomPoint(), name);
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}
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auto newIDs = map->addPointAnnotations(points);
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annotationIDs.insert(annotationIDs.end(), newIDs.begin(), newIDs.end());
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}
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void GLFWView::addRandomPointAnnotations(int count) {
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std::vector<mbgl::PointAnnotation> points;
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for (int i = 0; i < count; i++) {
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points.emplace_back(makeRandomPoint(), "marker-15");
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}
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auto newIDs = map->addPointAnnotations(points);
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annotationIDs.insert(annotationIDs.end(), newIDs.begin(), newIDs.end());
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}
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void GLFWView::addRandomShapeAnnotations(int count) {
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std::vector<mbgl::ShapeAnnotation> shapes;
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mbgl::FillPaintProperties properties;
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properties.opacity = .1;
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for (int i = 0; i < count; i++) {
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mbgl::AnnotationSegment triangle;
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triangle.push_back(makeRandomPoint());
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triangle.push_back(makeRandomPoint());
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triangle.push_back(makeRandomPoint());
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mbgl::AnnotationSegments segments;
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segments.push_back(triangle);
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shapes.emplace_back(segments, properties);
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}
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auto newIDs = map->addShapeAnnotations(shapes);
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annotationIDs.insert(annotationIDs.end(), newIDs.begin(), newIDs.end());
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}
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void GLFWView::clearAnnotations() {
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if (annotationIDs.empty()) {
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return;
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}
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map->removeAnnotations(annotationIDs);
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annotationIDs.clear();
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}
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void GLFWView::popAnnotation() {
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if (annotationIDs.empty()) {
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return;
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}
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map->removeAnnotation(annotationIDs.back());
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annotationIDs.pop_back();
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}
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void GLFWView::onScroll(GLFWwindow *window, double /*xOffset*/, double yOffset) {
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GLFWView *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
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double delta = yOffset * 40;
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bool isWheel = delta != 0 && std::fmod(delta, 4.000244140625) == 0;
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double absDelta = delta < 0 ? -delta : delta;
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double scale = 2.0 / (1.0 + std::exp(-absDelta / 100.0));
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// Make the scroll wheel a bit slower.
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if (!isWheel) {
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scale = (scale - 1.0) / 2.0 + 1.0;
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}
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// Zooming out.
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if (delta < 0 && scale != 0) {
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scale = 1.0 / scale;
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}
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view->map->scaleBy(scale, view->lastX, view->lastY);
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}
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void GLFWView::onWindowResize(GLFWwindow *window, int width, int height) {
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GLFWView *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
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view->width = width;
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view->height = height;
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view->map->update(mbgl::Update::Dimensions);
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}
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void GLFWView::onFramebufferResize(GLFWwindow *window, int width, int height) {
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GLFWView *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
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view->fbWidth = width;
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view->fbHeight = height;
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view->map->update(mbgl::Update::Repaint);
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}
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void GLFWView::onMouseClick(GLFWwindow *window, int button, int action, int modifiers) {
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GLFWView *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
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if (button == GLFW_MOUSE_BUTTON_RIGHT ||
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(button == GLFW_MOUSE_BUTTON_LEFT && modifiers & GLFW_MOD_CONTROL)) {
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view->rotating = action == GLFW_PRESS;
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view->map->setGestureInProgress(view->rotating);
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} else if (button == GLFW_MOUSE_BUTTON_LEFT) {
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view->tracking = action == GLFW_PRESS;
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view->map->setGestureInProgress(view->tracking);
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if (action == GLFW_RELEASE) {
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double now = glfwGetTime();
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if (now - view->lastClick < 0.4 /* ms */) {
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if (modifiers & GLFW_MOD_SHIFT) {
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view->map->scaleBy(0.5, view->lastX, view->lastY, std::chrono::milliseconds(500));
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} else {
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view->map->scaleBy(2.0, view->lastX, view->lastY, std::chrono::milliseconds(500));
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}
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}
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view->lastClick = now;
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}
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}
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}
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void GLFWView::onMouseMove(GLFWwindow *window, double x, double y) {
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GLFWView *view = reinterpret_cast<GLFWView *>(glfwGetWindowUserPointer(window));
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if (view->tracking) {
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double dx = x - view->lastX;
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double dy = y - view->lastY;
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if (dx || dy) {
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double flippedY = view->height - y;
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view->map->setLatLng(
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view->map->latLngForPixel(mbgl::vec2<double>(x - dx, flippedY + dy)),
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mbgl::vec2<double>(x, flippedY));
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}
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} else if (view->rotating) {
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view->map->rotateBy(view->lastX, view->lastY, x, y);
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}
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view->lastX = x;
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view->lastY = y;
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}
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void GLFWView::run() {
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while (!glfwWindowShouldClose(window)) {
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glfwWaitEvents();
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const bool dirty = !clean.test_and_set();
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if (dirty) {
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const double started = glfwGetTime();
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map->renderSync();
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report(1000 * (glfwGetTime() - started));
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if (benchmark) {
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map->update(mbgl::Update::Repaint);
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}
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}
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}
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}
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float GLFWView::getPixelRatio() const {
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return pixelRatio;
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}
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std::array<uint16_t, 2> GLFWView::getSize() const {
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return {{ static_cast<uint16_t>(width), static_cast<uint16_t>(height) }};
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}
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std::array<uint16_t, 2> GLFWView::getFramebufferSize() const {
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return {{ static_cast<uint16_t>(fbWidth), static_cast<uint16_t>(fbHeight) }};
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}
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void GLFWView::activate() {
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glfwMakeContextCurrent(window);
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}
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void GLFWView::deactivate() {
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glfwMakeContextCurrent(nullptr);
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}
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void GLFWView::notify() {
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glfwPostEmptyEvent();
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}
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void GLFWView::invalidate() {
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clean.clear();
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glfwPostEmptyEvent();
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}
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void GLFWView::beforeRender() {
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// no-op
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}
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void GLFWView::afterRender() {
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glfwSwapBuffers(window);
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}
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void GLFWView::report(float duration) {
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frames++;
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frameTime += duration;
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const double currentTime = glfwGetTime();
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if (currentTime - lastReported >= 1) {
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frameTime /= frames;
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mbgl::Log::Info(mbgl::Event::OpenGL, "Frame time: %6.2fms (%6.2f fps)", frameTime,
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1000 / frameTime);
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frames = 0;
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frameTime = 0;
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lastReported = currentTime;
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}
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}
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void GLFWView::setChangeStyleCallback(std::function<void()> callback) {
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changeStyleCallback = callback;
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}
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void GLFWView::setShouldClose() {
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glfwSetWindowShouldClose(window, true);
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glfwPostEmptyEvent();
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}
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void GLFWView::setWindowTitle(const std::string& title) {
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glfwSetWindowTitle(window, (std::string { "Mapbox GL: " } + title).c_str());
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}
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namespace mbgl {
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namespace platform {
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#ifndef GL_ES_VERSION_2_0
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void showDebugImage(std::string name, const char *data, size_t width, size_t height) {
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glfwInit();
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static GLFWwindow *debugWindow = nullptr;
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if (!debugWindow) {
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debugWindow = glfwCreateWindow(width, height, name.c_str(), nullptr, nullptr);
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if (!debugWindow) {
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glfwTerminate();
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fprintf(stderr, "Failed to initialize window\n");
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exit(1);
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}
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}
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GLFWwindow *currentWindow = glfwGetCurrentContext();
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glfwSetWindowSize(debugWindow, width, height);
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glfwMakeContextCurrent(debugWindow);
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int fbWidth, fbHeight;
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glfwGetFramebufferSize(debugWindow, &fbWidth, &fbHeight);
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float scale = static_cast<float>(fbWidth) / static_cast<float>(width);
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{
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gl::PreservePixelZoom pixelZoom;
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gl::PreserveRasterPos rasterPos;
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MBGL_CHECK_ERROR(glPixelZoom(scale, -scale));
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MBGL_CHECK_ERROR(glRasterPos2f(-1.0f, 1.0f));
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MBGL_CHECK_ERROR(glDrawPixels(width, height, GL_LUMINANCE, GL_UNSIGNED_BYTE, data));
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}
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glfwSwapBuffers(debugWindow);
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glfwMakeContextCurrent(currentWindow);
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}
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void showColorDebugImage(std::string name, const char *data, size_t logicalWidth, size_t logicalHeight, size_t width, size_t height) {
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glfwInit();
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static GLFWwindow *debugWindow = nullptr;
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if (!debugWindow) {
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debugWindow = glfwCreateWindow(logicalWidth, logicalHeight, name.c_str(), nullptr, nullptr);
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if (!debugWindow) {
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glfwTerminate();
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fprintf(stderr, "Failed to initialize window\n");
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exit(1);
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}
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}
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GLFWwindow *currentWindow = glfwGetCurrentContext();
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glfwSetWindowSize(debugWindow, logicalWidth, logicalHeight);
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glfwMakeContextCurrent(debugWindow);
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int fbWidth, fbHeight;
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glfwGetFramebufferSize(debugWindow, &fbWidth, &fbHeight);
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float xScale = static_cast<float>(fbWidth) / static_cast<float>(width);
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float yScale = static_cast<float>(fbHeight) / static_cast<float>(height);
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{
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gl::PreserveClearColor clearColor;
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gl::PreserveBlend blend;
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gl::PreserveBlendFunc blendFunc;
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gl::PreservePixelZoom pixelZoom;
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gl::PreserveRasterPos rasterPos;
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MBGL_CHECK_ERROR(glClearColor(0.8, 0.8, 0.8, 1));
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MBGL_CHECK_ERROR(glClear(GL_COLOR_BUFFER_BIT));
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MBGL_CHECK_ERROR(glEnable(GL_BLEND));
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MBGL_CHECK_ERROR(glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA));
|
|
MBGL_CHECK_ERROR(glPixelZoom(xScale, -yScale));
|
|
MBGL_CHECK_ERROR(glRasterPos2f(-1.0f, 1.0f));
|
|
MBGL_CHECK_ERROR(glDrawPixels(width, height, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, data));
|
|
}
|
|
|
|
glfwSwapBuffers(debugWindow);
|
|
|
|
glfwMakeContextCurrent(currentWindow);
|
|
}
|
|
#endif
|
|
|
|
}
|
|
}
|