Merge remote-tracking branch 'origin/DRTVWR-600-maint-A' into brad/merge-maint-a-to-dev

1 files changed, 110 insertions, 110 deletions

diff --git a/indra/llmath/llline.cpp b/indra/llmath/llline.cpp
index cfee315b55..70c68dd42f 100644
--- a/indra/llmath/llline.cpp
+++ b/indra/llmath/llline.cpp
@@ -1,4 +1,4 @@
-/** 
+/**
  * @file llline.cpp
  * @author Andrew Meadows
  * @brief Simple line class that can compute nearest approach between two lines
@@ -6,21 +6,21 @@
  * $LicenseInfo:firstyear=2006&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2010, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -33,87 +33,87 @@
 const F32 SOME_VERY_SMALL_NUMBER = 1.0e-8f;
 
 LLLine::LLLine()
-:	mPoint(0.f, 0.f, 0.f),
-	mDirection(1.f, 0.f, 0.f)
+:   mPoint(0.f, 0.f, 0.f),
+    mDirection(1.f, 0.f, 0.f)
 { }
 
 LLLine::LLLine( const LLVector3& first_point, const LLVector3& second_point )
 {
-	setPoints(first_point, second_point);
+    setPoints(first_point, second_point);
 }
 
 void LLLine::setPoints( const LLVector3& first_point, const LLVector3& second_point )
 {
-	mPoint = first_point;
-	mDirection = second_point - first_point;
-	mDirection.normalize();
+    mPoint = first_point;
+    mDirection = second_point - first_point;
+    mDirection.normalize();
 }
 
 void LLLine::setPointDirection( const LLVector3& first_point, const LLVector3& second_point )
 {
-	setPoints(first_point, first_point + second_point);
+    setPoints(first_point, first_point + second_point);
 }
 
 bool LLLine::intersects( const LLVector3& point, F32 radius ) const
 {
-	LLVector3 other_direction = point - mPoint;
-	LLVector3 nearest_point = mPoint + mDirection * (other_direction * mDirection);
-	F32 nearest_approach = (nearest_point - point).length();
-	return (nearest_approach <= radius);
+    LLVector3 other_direction = point - mPoint;
+    LLVector3 nearest_point = mPoint + mDirection * (other_direction * mDirection);
+    F32 nearest_approach = (nearest_point - point).length();
+    return (nearest_approach <= radius);
 }
 
 // returns the point on this line that is closest to some_point
 LLVector3 LLLine::nearestApproach( const LLVector3& some_point ) const
 {
-	return (mPoint + mDirection * ((some_point - mPoint) * mDirection));
+    return (mPoint + mDirection * ((some_point - mPoint) * mDirection));
 }
 
 // the accuracy of this method sucks when you give it two nearly
 // parallel lines, so you should probably check for parallelism
 // before you call this
-// 
+//
 // returns the point on this line that is closest to other_line
 LLVector3 LLLine::nearestApproach( const LLLine& other_line ) const
 {
-	LLVector3 between_points = other_line.mPoint - mPoint;
-	F32 dir_dot_dir = mDirection * other_line.mDirection;
-	F32 one_minus_dir_dot_dir = 1.0f - fabs(dir_dot_dir);
-	if ( one_minus_dir_dot_dir < SOME_VERY_SMALL_NUMBER )
-	{
+    LLVector3 between_points = other_line.mPoint - mPoint;
+    F32 dir_dot_dir = mDirection * other_line.mDirection;
+    F32 one_minus_dir_dot_dir = 1.0f - fabs(dir_dot_dir);
+    if ( one_minus_dir_dot_dir < SOME_VERY_SMALL_NUMBER )
+    {
 #ifdef LL_DEBUG
-		LL_WARNS() << "LLLine::nearestApproach() was given two very "
-			<< "nearly parallel lines dir1 = " << mDirection 
-			<< " dir2 = " << other_line.mDirection << " with 1-dot_product = " 
-			<< one_minus_dir_dot_dir << LL_ENDL;
+        LL_WARNS() << "LLLine::nearestApproach() was given two very "
+            << "nearly parallel lines dir1 = " << mDirection
+            << " dir2 = " << other_line.mDirection << " with 1-dot_product = "
+            << one_minus_dir_dot_dir << LL_ENDL;
 #endif
-		// the lines are approximately parallel
-		// We shouldn't fall in here because this check should have been made
-		// BEFORE this function was called.  We dare not continue with the 
-		// computations for fear of division by zero, but we have to return 
-		// something so we return a bogus point -- caller beware.
-		return 0.5f * (mPoint + other_line.mPoint);
-	}
-
-	F32 odir_dot_bp = other_line.mDirection * between_points;
-
-	F32 numerator = 0;
-	F32 denominator = 0;
-	for (S32 i=0; i<3; i++)
-	{
-		F32 factor = dir_dot_dir * other_line.mDirection.mV[i] - mDirection.mV[i];
-		numerator += ( between_points.mV[i] - odir_dot_bp * other_line.mDirection.mV[i] ) * factor;
-		denominator -= factor * factor;
-	}
-
-	F32 length_to_nearest_approach = numerator / denominator;
-
-	return mPoint + length_to_nearest_approach * mDirection;
+        // the lines are approximately parallel
+        // We shouldn't fall in here because this check should have been made
+        // BEFORE this function was called.  We dare not continue with the
+        // computations for fear of division by zero, but we have to return
+        // something so we return a bogus point -- caller beware.
+        return 0.5f * (mPoint + other_line.mPoint);
+    }
+
+    F32 odir_dot_bp = other_line.mDirection * between_points;
+
+    F32 numerator = 0;
+    F32 denominator = 0;
+    for (S32 i=0; i<3; i++)
+    {
+        F32 factor = dir_dot_dir * other_line.mDirection.mV[i] - mDirection.mV[i];
+        numerator += ( between_points.mV[i] - odir_dot_bp * other_line.mDirection.mV[i] ) * factor;
+        denominator -= factor * factor;
+    }
+
+    F32 length_to_nearest_approach = numerator / denominator;
+
+    return mPoint + length_to_nearest_approach * mDirection;
 }
 
 std::ostream& operator<<( std::ostream& output_stream, const LLLine& line )
 {
-	output_stream << "{point=" << line.mPoint << "," << "dir=" << line.mDirection << "}";
-	return output_stream;
+    output_stream << "{point=" << line.mPoint << "," << "dir=" << line.mDirection << "}";
+    return output_stream;
 }
 
 
@@ -124,72 +124,72 @@ F32 TOO_SMALL_FOR_DIVISION = 0.0001f;
 // on success stores the intersection point in 'result'
 bool LLLine::intersectsPlane( LLVector3& result, const LLLine& plane ) const
 {
-	// p = P + l * d     equation for a line
-	// 
-	// N * p = D         equation for a point
-	//
-	// N * (P + l * d) = D
-	// N*P + l * (N*d) = D
-	// l * (N*d) = D - N*P
-	// l =  ( D - N*P ) / ( N*d )
-	//
-
-	F32 dot = plane.mDirection * mDirection;
-	if (fabs(dot) < TOO_SMALL_FOR_DIVISION)
-	{
-		return false;
-	}
-
-	F32 plane_dot = plane.mDirection * plane.mPoint;
-	F32 length = ( plane_dot - (plane.mDirection * mPoint) ) / dot;
-	result = mPoint + length * mDirection;
-	return true;
+    // p = P + l * d     equation for a line
+    //
+    // N * p = D         equation for a point
+    //
+    // N * (P + l * d) = D
+    // N*P + l * (N*d) = D
+    // l * (N*d) = D - N*P
+    // l =  ( D - N*P ) / ( N*d )
+    //
+
+    F32 dot = plane.mDirection * mDirection;
+    if (fabs(dot) < TOO_SMALL_FOR_DIVISION)
+    {
+        return false;
+    }
+
+    F32 plane_dot = plane.mDirection * plane.mPoint;
+    F32 length = ( plane_dot - (plane.mDirection * mPoint) ) / dot;
+    result = mPoint + length * mDirection;
+    return true;
 }
 
-//static 
-// returns 'true' if planes intersect, and stores the result 
+//static
+// returns 'true' if planes intersect, and stores the result
 // the second and third arguments are treated as planes
 // where mPoint is on the plane and mDirection is the normal
-// result.mPoint will be the intersection line's closest approach 
+// result.mPoint will be the intersection line's closest approach
 // to first_plane.mPoint
 bool LLLine::getIntersectionBetweenTwoPlanes( LLLine& result, const LLLine& first_plane, const LLLine& second_plane )
 {
-	// TODO -- if we ever get some generic matrix solving code in our libs
-	// then we should just use that, since this problem is really just
-	// linear algebra.
-
-	F32 dot = fabs(first_plane.mDirection * second_plane.mDirection);
-	if (dot > ALMOST_PARALLEL)
-	{
-		// the planes are nearly parallel
-		return false;
-	}
-
-	LLVector3 direction = first_plane.mDirection % second_plane.mDirection;
-	direction.normalize();
-
-	LLVector3 first_intersection;
-	{
-		LLLine intersection_line(first_plane);
-		intersection_line.mDirection = direction % first_plane.mDirection;
-		intersection_line.mDirection.normalize();
-		intersection_line.intersectsPlane(first_intersection, second_plane);
-	}
-
-	/*
-	LLVector3 second_intersection;
-	{
-		LLLine intersection_line(second_plane);
-		intersection_line.mDirection = direction % second_plane.mDirection;
-		intersection_line.mDirection.normalize();
-		intersection_line.intersectsPlane(second_intersection, first_plane);
-	}
-	*/
-
-	result.mPoint = first_intersection;
-	result.mDirection = direction;
-
-	return true;
+    // TODO -- if we ever get some generic matrix solving code in our libs
+    // then we should just use that, since this problem is really just
+    // linear algebra.
+
+    F32 dot = fabs(first_plane.mDirection * second_plane.mDirection);
+    if (dot > ALMOST_PARALLEL)
+    {
+        // the planes are nearly parallel
+        return false;
+    }
+
+    LLVector3 direction = first_plane.mDirection % second_plane.mDirection;
+    direction.normalize();
+
+    LLVector3 first_intersection;
+    {
+        LLLine intersection_line(first_plane);
+        intersection_line.mDirection = direction % first_plane.mDirection;
+        intersection_line.mDirection.normalize();
+        intersection_line.intersectsPlane(first_intersection, second_plane);
+    }
+
+    /*
+    LLVector3 second_intersection;
+    {
+        LLLine intersection_line(second_plane);
+        intersection_line.mDirection = direction % second_plane.mDirection;
+        intersection_line.mDirection.normalize();
+        intersection_line.intersectsPlane(second_intersection, first_plane);
+    }
+    */
+
+    result.mPoint = first_intersection;
+    result.mDirection = direction;
+
+    return true;
 }