Merge of trunk into blender 2.5:

svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r12987:17416

Issues:
* GHOST/X11 had conflicting changes. Some code was added in 2.5, which was
  later added in trunk also, but reverted partially, specifically revision
  16683. I have left out this reversion in the 2.5 branch since I think it is
  needed there.
  http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=16683
* Scons had various conflicting changes, I decided to go with trunk version
  for everything except priorities and some library renaming.
* In creator.c, there were various fixes and fixes for fixes related to the -w
  -W and -p options. In 2.5 -w and -W is not coded yet, and -p is done
  differently. Since this is changed so much, and I don't think those fixes
  would be needed in 2.5, I've left them out.
* Also in creator.c: there was code for a python bugfix where the screen was not
  initialized when running with -P. The code that initializes the screen there
  I had to disable, that can't work in 2.5 anymore but left it commented as a
  reminder.

Further I had to disable some new function calls. using src/ and python/, as
was done already in this branch, disabled function calls:
* bpath.c: error reporting
* BME_conversions.c: editmesh conversion functions.
* SHD_dynamic: disabled almost completely, there is no python/.
* KX_PythonInit.cpp and Ketsji/ build files: Mathutils is not there, disabled.
* text.c: clipboard copy call.
* object.c: OB_SUPPORT_MATERIAL.
* DerivedMesh.c and subsurf_ccg, stipple_quarttone.

Still to be done:
* Go over files and functions that were moved to a different location but could
  still use changes that were done in trunk.

1 files changed, 149 insertions, 0 deletions

diff --git a/extern/bullet2/src/BulletCollision/Gimpact/btContactProcessing.h b/extern/bullet2/src/BulletCollision/Gimpact/btContactProcessing.h
new file mode 100644
index 00000000000..0cfd013b962
--- /dev/null
+++ b/extern/bullet2/src/BulletCollision/Gimpact/btContactProcessing.h
@@ -0,0 +1,149 @@
+#ifndef BT_CONTACT_H_INCLUDED
+#define BT_CONTACT_H_INCLUDED
+
+/*! \file gim_contact.h
+\author Francisco Len Nßjera
+*/
+/*
+This source file is part of GIMPACT Library.
+
+For the latest info, see http://gimpact.sourceforge.net/
+
+Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
+email: projectileman@yahoo.com
+
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "LinearMath/btTransform.h"
+#include "LinearMath/btAlignedObjectArray.h"
+#include "btTriangleShapeEx.h"
+
+
+/*! \defgroup CONTACTS
+\brief
+Functions for managing and sorting contacts resulting from a collision query.
+*/
+//! @{
+
+/**
+Configuration var for applying interpolation of  contact normals
+*/
+#define NORMAL_CONTACT_AVERAGE 1
+
+#define CONTACT_DIFF_EPSILON 0.00001f
+
+/// Structure for collision results
+class BT_CONTACT
+{
+public:
+    btVector3 m_point;
+    btVector3 m_normal;
+    btScalar m_depth;//Positive value indicates interpenetration
+    btScalar m_distance;//Padding not for use
+    int m_feature1;//Face number
+    int m_feature2;//Face number
+public:
+    BT_CONTACT()
+    {
+    }
+
+    BT_CONTACT(const BT_CONTACT & contact):
+				m_point(contact.m_point),
+				m_normal(contact.m_normal),
+				m_depth(contact.m_depth),
+				m_feature1(contact.m_feature1),
+				m_feature2(contact.m_feature2)
+    {
+    }
+
+    BT_CONTACT(const btVector3 &point,const btVector3 & normal,
+    	 			btScalar depth, int feature1, int feature2):
+				m_point(point),
+				m_normal(normal),
+				m_depth(depth),
+				m_feature1(feature1),
+				m_feature2(feature2)
+    {
+    }
+
+	//! Calcs key for coord classification
+    SIMD_FORCE_INLINE unsigned int calc_key_contact() const
+    {
+    	int _coords[] = {
+    		(int)(m_point[0]*1000.0f+1.0f),
+    		(int)(m_point[1]*1333.0f),
+    		(int)(m_point[2]*2133.0f+3.0f)};
+		unsigned int _hash=0;
+		unsigned int *_uitmp = (unsigned int *)(&_coords[0]);
+		_hash = *_uitmp;
+		_uitmp++;
+		_hash += (*_uitmp)<<4;
+		_uitmp++;
+		_hash += (*_uitmp)<<8;
+		return _hash;
+    }
+
+    SIMD_FORCE_INLINE void interpolate_normals( btVector3 * normals,int normal_count)
+    {
+    	btVector3 vec_sum(m_normal);
+		for(int i=0;i<normal_count;i++)
+		{
+			vec_sum += normals[i];
+		}
+
+		btScalar vec_sum_len = vec_sum.length2();
+		if(vec_sum_len <CONTACT_DIFF_EPSILON) return;
+
+		//GIM_INV_SQRT(vec_sum_len,vec_sum_len); // 1/sqrt(vec_sum_len)
+
+		m_normal = vec_sum/btSqrt(vec_sum_len);
+    }
+
+};
+
+
+class btContactArray:public btAlignedObjectArray<BT_CONTACT>
+{
+public:
+	btContactArray()
+	{
+		reserve(64);
+	}
+
+	SIMD_FORCE_INLINE void push_contact(
+		const btVector3 &point,const btVector3 & normal,
+		btScalar depth, int feature1, int feature2)
+	{
+		push_back( BT_CONTACT(point,normal,depth,feature1,feature2) );
+	}
+
+	SIMD_FORCE_INLINE void push_triangle_contacts(
+		const BT_TRIANGLE_CONTACT & tricontact,
+		int feature1,int feature2)
+	{
+		for(int i = 0;i<tricontact.m_point_count ;i++ )
+		{
+			push_contact(
+				tricontact.m_points[i],
+				tricontact.m_separating_normal,
+				tricontact.m_penetration_depth,feature1,feature2);
+		}
+	}
+
+	void merge_contacts(const btContactArray & contacts, bool normal_contact_average = true);
+
+	void merge_contacts_unique(const btContactArray & contacts);
+};
+
+//! @}
+#endif // GIM_CONTACT_H_INCLUDED