[general] moving ios and android project under ./platform folder

include/mbgl/util/constants.hpp

@@ -0,0 +1,88 @@
+#pragma once
+
+#include <mbgl/util/chrono.hpp>
+#include <mbgl/util/unitbezier.hpp>
+
+#include <cmath>
+#include <string>
+#include <vector>
+
+namespace mbgl {
+
+namespace util {
+
+constexpr double tileSize = 512;
+
+/*
+ * The maximum extent of a feature that can be safely stored in the buffer.
+ * In practice, all features are converted to this extent before being added.
+ *
+ * Positions are stored as signed 16bit integers.
+ * One bit is lost for signedness to support features extending past the left edge of the tile.
+ * One bit is lost because the line vertex buffer used to pack 1 bit of other data into the int.
+ * This is no longer the case but we're reserving this bit anyway.
+ * One bit is lost to support features extending past the extent on the right edge of the tile.
+ * This leaves us with 2^13 = 8192
+ */
+constexpr int32_t EXTENT = 8192;
+
+constexpr double DEG2RAD = M_PI / 180.0;
+constexpr double RAD2DEG = 180.0 / M_PI;
+constexpr double M2PI = M_PI * 2;
+constexpr double EARTH_RADIUS_M = 6378137;
+constexpr double LATITUDE_MAX = 85.051128779806604;
+constexpr double LONGITUDE_MAX = 180;
+constexpr double DEGREES_MAX = 360;
+constexpr double PITCH_MIN = 0.0;
+constexpr double PITCH_MAX = M_PI / 3;
+constexpr double MIN_ZOOM = 0.0;
+constexpr double MAX_ZOOM = 25.5;
+constexpr float  MIN_ZOOM_F = MIN_ZOOM;
+constexpr float  MAX_ZOOM_F = MAX_ZOOM;
+constexpr uint8_t DEFAULT_MAX_ZOOM = 22;
+
+// ONE_EM constant used to go between "em" units used in style spec and "points" used internally for layout.
+constexpr float ONE_EM = 24.0f;
+
+constexpr uint8_t DEFAULT_PREFETCH_ZOOM_DELTA = 4;
+
+constexpr uint64_t DEFAULT_MAX_CACHE_SIZE = 50 * 1024 * 1024;
+
+// Default ImageManager's cache size for images added via onStyleImageMissing API.
+// Average sprite size with 1.0 pixel ratio is ~2kB, 8kB for pixel ratio of 2.0.
+constexpr std::size_t DEFAULT_ON_DEMAND_IMAGES_CACHE_SIZE = 100 * 8192;
+
+constexpr Duration DEFAULT_TRANSITION_DURATION = Milliseconds(300);
+constexpr Seconds CLOCK_SKEW_RETRY_TIMEOUT { 30 };
+
+constexpr UnitBezier DEFAULT_TRANSITION_EASE = { 0, 0, 0.25, 1 };
+
+constexpr int DEFAULT_RATE_LIMIT_TIMEOUT = 5;
+
+constexpr const char* API_BASE_URL = "https://api.mapbox.com";
+constexpr const char* ASSET_PROTOCOL = "asset://";
+constexpr const char* FILE_PROTOCOL = "file://";
+constexpr uint32_t DEFAULT_MAXIMUM_CONCURRENT_REQUESTS = 20;
+
+constexpr uint8_t TERRAIN_RGB_MAXZOOM = 15;
+
+constexpr const char* LAST_RESORT_ALPHABETIC_FONT = "Open Sans Regular";
+constexpr const char* LAST_RESORT_PAN_UNICODE_FONT = "Arial Unicode MS Regular";
+
+} // namespace util
+
+namespace debug {
+
+extern const bool tileParseWarnings;
+extern const bool styleParseWarnings;
+extern const bool spriteWarnings;
+extern const bool renderWarnings;
+extern const bool labelTextMissingWarning;
+extern const bool missingFontStackWarning;
+extern const bool missingFontFaceWarning;
+extern const bool glyphWarning;
+extern const bool shapingWarning;
+
+} // namespace debug
+
+} // namespace mbgl