From 1381f0f27694cf8eee0db79d3ddb01f42bbcdbeb Mon Sep 17 00:00:00 2001
From: Eric Fischer <enf@pobox.com>
Date: Tue, 21 Apr 2015 08:19:51 -0700
Subject: [PATCH] Add a flag to let you drop lines at low zooms just like
 points

---
 README.md | 2 ++
 tile.cc   | 8 ++++++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index ee8bc18..fa6382c 100644
--- a/README.md
+++ b/README.md
@@ -83,6 +83,8 @@ Options
  * -pc: Don't coalesce features with the same properties
  * -pf: Don't limit tiles to 200,000 features
  * -pk: Don't limit tiles to 500K bytes
+ * -po: Don't reorder features to put the same properties in sequence
+ * -pl: Let "dot" simplification apply to lines too
 
 Example
 -------
diff --git a/tile.cc b/tile.cc
index f44e1c5..b1ffff9 100644
--- a/tile.cc
+++ b/tile.cc
@@ -514,7 +514,7 @@ long long write_tile(char **geoms, char *metabase, unsigned *file_bbox, int z, u
 				continue;
 			}
 
-			if (t == VT_POINT && gamma >= 0) {
+			if (gamma >= 0 && (t == VT_POINT || (prevent['l' & 0xFF] && t == VT_LINE))) {
 				seq++;
 				if (seq >= 0) {
 					seq -= interval;
@@ -611,16 +611,20 @@ long long write_tile(char **geoms, char *metabase, unsigned *file_bbox, int z, u
 		}
 
 		for (j = 0; j < nlayers; j++) {
-			std::sort(features[j].begin(), features[j].end());
+			if (!prevent['o'] & 0xFF) {
+				std::sort(features[j].begin(), features[j].end());
+			}
 
 			std::vector<coalesce> out;
 			unsigned x;
 			for (x = 0; x < features[j].size(); x++) {
 				unsigned y = out.size() - 1;
 
+#if 0
 				if (out.size() > 0 && coalcmp(&features[j][x], &out[y]) < 0) {
 					fprintf(stderr, "\nfeature out of order\n");
 				}
+#endif
 
 				if (!prevent['c' & 0xFF] && out.size() > 0 && out[y].geom.size() + features[j][x].geom.size() < 20000 && coalcmp(&features[j][x], &out[y]) == 0 && features[j][x].type != VT_POINT) {
 					unsigned z;