From: havoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Fri, 11 Jul 2003 07:44:17 +0000 (+0000)
Subject: added a note about another kind of terrain strip and documented code for generating... 
X-Git-Tag: xonotic-v0.1.0preview~6548
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=322a793217747dcba07746dbe23006dcb50492a2;p=xonotic%2Fdarkplaces.git

added a note about another kind of terrain strip and documented code for generating the strips


git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@3227 d7cf8633-e32d-0410-b094-e92efae38249
---

diff --git a/gl_backend.c b/gl_backend.c
index 833bdb1b..fe474eac 100644
--- a/gl_backend.c
+++ b/gl_backend.c
@@ -91,6 +91,7 @@ note: here's strip order for a terrain row:
 |\ |\ |\ |\ |
 | \| \| \| \|
 A--B--C--D--E
+clockwise
 
 A0B, 01B, B1C, 12C, C2D, 23D, D3E, 34E
 
@@ -100,6 +101,42 @@ A0B, 01B, B1C, 12C, C2D, 23D, D3E, 34E
 *elements++ = i;
 *elements++ = i + 1;
 *elements++ = i + row + 1;
+
+
+for (y = 0;y < rows - 1;y++)
+{
+	for (x = 0;x < columns - 1;x++)
+	{
+		i = y * rows + x;
+		*elements++ = i + columns;
+		*elements++ = i;
+		*elements++ = i + columns + 1;
+		*elements++ = i;
+		*elements++ = i + 1;
+		*elements++ = i + columns + 1;
+	}
+}
+
+alternative:
+0--1--2--3--4
+| /| /|\ | /|
+|/ |/ | \|/ |
+A--B--C--D--E
+counterclockwise
+
+for (y = 0;y < rows - 1;y++)
+{
+	for (x = 0;x < columns - 1;x++)
+	{
+		i = y * rows + x;
+		*elements++ = i;
+		*elements++ = i + columns;
+		*elements++ = i + columns + 1;
+		*elements++ = i + columns;
+		*elements++ = i + columns + 1;
+		*elements++ = i + 1;
+	}
+}
 */
 
 int polygonelements[768];