From 50c4c4b9ce488f2c7691ea26bf670b0abfc797cd Mon Sep 17 00:00:00 2001
From: Johannes Hofmann <Johannes.Hofmann@gmx.de>
Date: Sun, 29 Mar 2009 14:10:09 +0200
Subject: change Hills::sort() interface

---
 src/GipfelWidget.cxx |  2 +-
 src/Hill.H           |  6 ++---
 src/Hill.cxx         | 62 +++++++++++++++++++++++++++-------------------------
 src/Panorama.cxx     |  2 +-
 src/choose_hill.cxx  |  2 +-
 5 files changed, 37 insertions(+), 37 deletions(-)

diff --git a/src/GipfelWidget.cxx b/src/GipfelWidget.cxx
index f0403cf..e334484 100644
--- a/src/GipfelWidget.cxx
+++ b/src/GipfelWidget.cxx
@@ -369,7 +369,7 @@ GipfelWidget::set_labels(Hills *v) {
 				colliding.add(n);
 		}
 
-		colliding.sort_label_y();
+		colliding.sort(Hills::SORT_LABEL_Y);
 
 		for (int j = 0; j < colliding.get_num(); j++) {
 			Hill *n = colliding.get(j);
diff --git a/src/Hill.H b/src/Hill.H
index b4ced70..ac4917a 100644
--- a/src/Hill.H
+++ b/src/Hill.H
@@ -42,6 +42,7 @@ class Hills {
 
 	public:
 		typedef enum {
+			SORT_ALPHA,
 			SORT_PHI,
 			SORT_NAME,
 			SORT_LABEL_Y
@@ -56,10 +57,7 @@ class Hills {
 		void add(Hill *m);
 		void remove(const Hill *m);
 		void add(Hills *h);
-		void sort_phi();
-		void sort_name();
-		void sort_label_y();
-		void sort();
+		void sort(SortType t);
 		void clear();
 		void clobber();
 		int contains(const Hill *m) const;
diff --git a/src/Hill.cxx b/src/Hill.cxx
index 9056d2f..d79f4ad 100644
--- a/src/Hill.cxx
+++ b/src/Hill.cxx
@@ -128,7 +128,7 @@ void Hills::mark_duplicates(double dist) {
 	Hill *m, *n;
 	int i, j;
 
-	sort_phi();
+	sort(SORT_PHI);
 
 	for(i=0; i<get_num();i++) {
 		m = get(i);
@@ -175,7 +175,7 @@ Hills::add(Hills *h) {
 }
 
 static int
-comp_mountains(const void *n1, const void *n2) {
+comp_mountains_alpha(const void *n1, const void *n2) {
 	Hill *m1 = *(Hill **)n1;
 	Hill *m2 = *(Hill **)n2;
 
@@ -230,42 +230,44 @@ comp_mountains_label_y(const void *n1, const void *n2) {
 	Hill *m1 = *(Hill **)n1;
 	Hill *m2 = *(Hill **)n2;
 
-	if (m1 && m2)
-		return (m2->y + m2->label_y) - (m1->y + m1->label_y);
-	else
+	if (m1 && m2) {
+		if ((m2->y + m2->label_y) > (m1->y + m1->label_y))
+			return 1;
+		else if ((m2->y + m2->label_y) < (m1->y + m1->label_y))
+			return -1;
+		else
+			return 0;
+	} else {
 		return 0;
+	}
 }
 
 void
-Hills::sort() {
-	if (!m)
-		return;
-
-	qsort(m, num, sizeof(Hill *), comp_mountains);
-}
-
-void
-Hills::sort_phi() {
-	if (!m)
-		return;
-
-	qsort(m, num, sizeof(Hill *), comp_mountains_phi);
-}
-
-void
-Hills::sort_name() {
+Hills::sort(SortType t) {
+	int (*cmp)(const void *, const void *);
+	
 	if (!m)
 		return;
 
-	qsort(m, num, sizeof(Hill *), comp_mountains_name);
-}
-
-void
-Hills::sort_label_y() {
-	if (!m)
-		return;
+	switch (t) {
+		case SORT_ALPHA:
+			cmp = comp_mountains_alpha;
+			break;
+		case SORT_PHI:
+			cmp = comp_mountains_phi;
+			break;
+		case SORT_NAME:
+			cmp = comp_mountains_name;
+			break;
+		case SORT_LABEL_Y:
+			cmp = comp_mountains_label_y;
+			break;
+		default:
+			fprintf(stderr, "ERROR: Unknown sort type %d\n", t);
+			return;
+	}
 
-	qsort(m, num, sizeof(Hill *), comp_mountains_label_y);
+	qsort(m, num, sizeof(Hill *), cmp);
 }
 
 void
diff --git a/src/Panorama.cxx b/src/Panorama.cxx
index e52b55c..7c4124f 100644
--- a/src/Panorama.cxx
+++ b/src/Panorama.cxx
@@ -297,7 +297,7 @@ Panorama::update_angles() {
 			m->alph = alpha(m);
 	}
 
-	mountains->sort();
+	mountains->sort(Hills::SORT_ALPHA);
 
 	update_close_mountains();
 }
diff --git a/src/choose_hill.cxx b/src/choose_hill.cxx
index 7f59d68..c83d8b1 100644
--- a/src/choose_hill.cxx
+++ b/src/choose_hill.cxx
@@ -15,7 +15,7 @@ choose_hill(const Hills *hills, const char *l) {
 	Hills *h_sort = new Hills(hills);
 	Hill *ret;
 
-	h_sort->sort_name();
+	h_sort->sort(Hills::SORT_NAME);
 
 	for (int i=0; i<h_sort->get_num(); i++) {
 		char buf[256];
-- 
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