Imported existing code

indra/newview/llbox.cpp

@@ -0,0 +1,131 @@
+/** 
+ * @file llbox.cpp
+ * @brief Draws a box using display lists for speed.
+ *
+ * $LicenseInfo:firstyear=2001&license=viewergpl$
+ * 
+ * Copyright (c) 2001-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "llviewerprecompiledheaders.h"
+
+#include "llbox.h"
+
+#include "llgl.h"
+#include "llrender.h"
+#include "llglheaders.h"
+
+LLBox		gBox;
+
+// These routines support multiple textures on a box
+void LLBox::prerender()
+{
+	F32 size = 1.f;
+
+	mTriangleCount = 6 * 2;
+
+	mVertex[0][0] = mVertex[1][0] = mVertex[2][0] = mVertex[3][0] = -size / 2;
+	mVertex[4][0] = mVertex[5][0] = mVertex[6][0] = mVertex[7][0] =  size / 2;
+	mVertex[0][1] = mVertex[1][1] = mVertex[4][1] = mVertex[5][1] = -size / 2;
+	mVertex[2][1] = mVertex[3][1] = mVertex[6][1] = mVertex[7][1] =  size / 2;
+	mVertex[0][2] = mVertex[3][2] = mVertex[4][2] = mVertex[7][2] = -size / 2;
+	mVertex[1][2] = mVertex[2][2] = mVertex[5][2] = mVertex[6][2] =  size / 2;
+}
+
+// These routines support multiple textures on a box
+void LLBox::cleanupGL()
+{
+	// No GL state, a noop.
+}
+
+void LLBox::renderface(S32 which_face)
+{
+	/*static F32 normals[6][3] =
+	{
+		{-1.0f,  0.0f,  0.0f},
+		{ 0.0f,  1.0f,  0.0f},
+		{ 1.0f,  0.0f,  0.0f},
+		{ 0.0f, -1.0f,  0.0f},
+		{ 0.0f,  0.0f,  1.0f},
+		{ 0.0f,  0.0f, -1.0f}
+		};*/
+	static S32 faces[6][4] =
+	{
+		{0, 1, 2, 3},
+		{3, 2, 6, 7},
+		{7, 6, 5, 4},
+		{4, 5, 1, 0},
+		{5, 6, 2, 1},
+		{7, 4, 0, 3}
+	};
+
+	gGL.begin(LLRender::QUADS);
+		//gGL.normal3fv(&normals[which_face][0]);
+		gGL.texCoord2f(1,0);
+		gGL.vertex3fv(&mVertex[ faces[which_face][0] ][0]);
+		gGL.texCoord2f(1,1);
+		gGL.vertex3fv(&mVertex[ faces[which_face][1] ][0]);
+		gGL.texCoord2f(0,1);
+		gGL.vertex3fv(&mVertex[ faces[which_face][2] ][0]);
+		gGL.texCoord2f(0,0);
+		gGL.vertex3fv(&mVertex[ faces[which_face][3] ][0]);
+	gGL.end();
+}
+
+void LLBox::render()
+{
+    // This is a flattend representation of the box as render here
+    //                                       .
+    //              (-++)        (+++)      /|\t
+    //                +------------+         | (texture coordinates)
+    //                |2          1|         |
+    //                |     4      |        (*) --->s
+    //                |    TOP     |
+    //                |            |
+    // (-++)     (--+)|3          0|(+-+)     (+++)        (-++)
+    //   +------------+------------+------------+------------+
+    //   |2          1|2          1|2          1|2          1|
+    //   |     0      |     1      |     2      |     3      |
+    //   |   BACK     |   RIGHT    |   FRONT    |   LEFT     |
+    //   |            |            |            |            |
+    //   |3          0|3          0|3          0|3          0|
+    //   +------------+------------+------------+------------+
+    // (-+-)     (---)|2          1|(+--)     (++-)        (-+-)
+    //                |     5      |
+    //                |   BOTTOM   |
+    //                |            |
+    //                |3          0|
+    //                +------------+
+    //              (-+-)        (++-)
+
+	renderface(5);
+	renderface(4);
+	renderface(3);
+	renderface(2);
+	renderface(1);
+	renderface(0);
+	gGL.flush();
+}