From 9de085be8bf3622dc7cbe59c66dfec137d7b812f Mon Sep 17 00:00:00 2001
From: Brandon Liu <bdon@bdon.org>
Date: Fri, 30 Sep 2022 22:11:41 +0800
Subject: [PATCH] js v3 client: coordinates use e7 fixed-precision encoding

---
 js/test_fixture_1.pmtiles | Bin 455 -> 455 bytes
 js/test_fixture_2.pmtiles | Bin 461 -> 452 bytes
 js/v3.ts                  |  12 ++++++------
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/js/test_fixture_1.pmtiles b/js/test_fixture_1.pmtiles
index 93cdb53187fe53c2924f50351c565b6f925767d8..2f2c750155c8b360869706ced305276f44aca8da 100644
GIT binary patch
delta 19
ZcmX@ke4KegCP)3W84L|Tys<Eh5dclk2WkKS

delta 19
acmX@ke4KegCddE(_4W)54fY!g!x#ZlAP0&7

diff --git a/js/test_fixture_2.pmtiles b/js/test_fixture_2.pmtiles
index 1f30eee8859665e53aa6fbdac8bba1f70477bd25..fec7eb08fc3694b48031a95dd1d0b576fbf16833 100644
GIT binary patch
delta 266
zcmX@he1v&|wB$Pm?4WU?i77|@v>6NyKs>R~qF&f*V$n-e`w7*p6S$>QIIDH5JDn!{
zx7{|CJy*5Q*m`|zS;7*xA3_IS?6h62?az06*OpmVJLI}#zr3(suA^;q`w+L)e}Su<
zpL2>$jvm%{?!udK!BcJe<SAQkcsgt7l~!u3j_;aQwABC9r{tw~@3U=G-?(+L_rC~9
zcGutABUo01{rmr8y8EA6qrj+{(i8hOczMKyzgSc7Cit6>i-0eqWru1yU(wfzYKH~u
z#6HaXv?DjC@!ebL2_~CnPyXZb*ycznt4G@MI<;fz&RZW9c?-`HcsK9==G?oJ+Zo*e
D%QbR)

delta 275
zcmX@Ye3p5FwB&aN?4WC+i7Chb|Mm6^3=Q@Z3oYuImwN2|a!dZjUZ)eL+?!hVPTT9E
z*iqmAb_s8-#_^eR=N_+O(B?g~n&H@iy9@kns^82yC3#JlO@r@3azLE*wG?^o{uhUR
zuc(~qK7CDue{zhF=^|JCnKfmX&MllYEkI`WtEH>zHLOleRMcF(eC{@z{zWPu>-htx
zF;});x6}H0<VAdh&aIk`(1v&a`+nS0sO$Hga`Br_iqab4Ny}xWO#Es;#hGvH+}4nD
zWRfwv<*(kf(}H&51?!7;+rD6W_0L>MGG)KYPix=P61PPaX72qrM{>W=E7|G6x7Oa>
P#$EdL%a*5;>lobt9=>^{

diff --git a/js/v3.ts b/js/v3.ts
index 1969a53..e10b708 100644
--- a/js/v3.ts
+++ b/js/v3.ts
@@ -315,13 +315,13 @@ export function bytesToHeader(bytes: ArrayBuffer, etag?: string): Header {
 		tileType: v.getUint8(94),
 		minZoom: v.getUint8(95),
 		maxZoom: v.getUint8(96),
-		minLon: v.getFloat32(97, true),
-		minLat: v.getFloat32(101, true),
-		maxLon: v.getFloat32(105, true),
-		maxLat: v.getFloat32(109, true),
+		minLon: v.getInt32(97, true) / 10000000,
+		minLat: v.getInt32(101, true) / 10000000,
+		maxLon: v.getInt32(105, true) / 10000000,
+		maxLat: v.getInt32(109, true) / 10000000,
 		centerZoom: v.getUint8(113),
-		centerLon: v.getFloat32(114, true),
-		centerLat: v.getFloat32(118, true),
+		centerLon: v.getInt32(114, true) / 10000000,
+		centerLat: v.getInt32(118, true) / 10000000,
 		etag: etag,
 	};
 }