1 files changed, 0 insertions, 201 deletions
diff --git a/lib/libsquish/rangefit.cpp b/lib/libsquish/rangefit.cpp
deleted file mode 100644
index 3fca1245eb..0000000000
--- a/lib/libsquish/rangefit.cpp
+++ /dev/null
@@ -1,201 +0,0 @@
-/* -----------------------------------------------------------------------------
-
-	Copyright (c) 2006 Simon Brown                          si@sjbrown.co.uk
-
-	Permission is hereby granted, free of charge, to any person obtaining
-	a copy of this software and associated documentation files (the 
-	"Software"), to	deal in the Software without restriction, including
-	without limitation the rights to use, copy, modify, merge, publish,
-	distribute, sublicense, and/or sell copies of the Software, and to 
-	permit persons to whom the Software is furnished to do so, subject to 
-	the following conditions:
-
-	The above copyright notice and this permission notice shall be included
-	in all copies or substantial portions of the Software.
-
-	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-	OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 
-	MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-	IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 
-	CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 
-	TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 
-	SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-	
-   -------------------------------------------------------------------------- */
-   
-#include "rangefit.h"
-#include "colourset.h"
-#include "colourblock.h"
-#include <cfloat>
-
-namespace squish {
-
-RangeFit::RangeFit( ColourSet const* colours, int flags, float* metric ) 
-  : ColourFit( colours, flags )
-{
-	// initialise the metric (old perceptual = 0.2126f, 0.7152f, 0.0722f)
-	if( metric )
-		m_metric = Vec3( metric[0], metric[1], metric[2] );
-	else
-		m_metric = Vec3( 1.0f );	
-
-	// initialise the best error
-	m_besterror = FLT_MAX;
-
-	// cache some values
-	int const count = m_colours->GetCount();
-	Vec3 const* values = m_colours->GetPoints();
-	float const* weights = m_colours->GetWeights();
-	
-	// get the covariance matrix
-	Sym3x3 covariance = ComputeWeightedCovariance( count, values, weights );
-	
-	// compute the principle component
-	Vec3 principle = ComputePrincipleComponent( covariance );
-
-	// get the min and max range as the codebook endpoints
-	Vec3 start( 0.0f );
-	Vec3 end( 0.0f );
-	if( count > 0 )
-	{
-		float min, max;
-		
-		// compute the range
-		start = end = values[0];
-		min = max = Dot( values[0], principle );
-		for( int i = 1; i < count; ++i )
-		{
-			float val = Dot( values[i], principle );
-			if( val < min )
-			{
-				start = values[i];
-				min = val;
-			}
-			else if( val > max )
-			{
-				end = values[i];
-				max = val;
-			}
-		}
-	}
-			
-	// clamp the output to [0, 1]
-	Vec3 const one( 1.0f );
-	Vec3 const zero( 0.0f );
-	start = Min( one, Max( zero, start ) );
-	end = Min( one, Max( zero, end ) );
-
-	// clamp to the grid and save
-	Vec3 const grid( 31.0f, 63.0f, 31.0f );
-	Vec3 const gridrcp( 1.0f/31.0f, 1.0f/63.0f, 1.0f/31.0f );
-	Vec3 const half( 0.5f );
-	m_start = Truncate( grid*start + half )*gridrcp;
-	m_end = Truncate( grid*end + half )*gridrcp;
-}
-
-void RangeFit::Compress3( void* block )
-{
-	// cache some values
-	int const count = m_colours->GetCount();
-	Vec3 const* values = m_colours->GetPoints();
-	
-	// create a codebook
-	Vec3 codes[3];
-	codes[0] = m_start;
-	codes[1] = m_end;
-	codes[2] = 0.5f*m_start + 0.5f*m_end;
-
-	// match each point to the closest code
-	u8 closest[16];
-	float error = 0.0f;
-	for( int i = 0; i < count; ++i )
-	{
-		// find the closest code
-		float dist = FLT_MAX;
-		int idx = 0;
-		for( int j = 0; j < 3; ++j )
-		{
-			float d = LengthSquared( m_metric*( values[i] - codes[j] ) );
-			if( d < dist )
-			{
-				dist = d;
-				idx = j;
-			}
-		}
-		
-		// save the index
-		closest[i] = ( u8 )idx;
-		
-		// accumulate the error
-		error += dist;
-	}
-	
-	// save this scheme if it wins
-	if( error < m_besterror )
-	{
-		// remap the indices
-		u8 indices[16];
-		m_colours->RemapIndices( closest, indices );
-		
-		// save the block
-		WriteColourBlock3( m_start, m_end, indices, block );
-		
-		// save the error
-		m_besterror = error;
-	}
-}
-
-void RangeFit::Compress4( void* block )
-{
-	// cache some values
-	int const count = m_colours->GetCount();
-	Vec3 const* values = m_colours->GetPoints();
-	
-	// create a codebook
-	Vec3 codes[4];
-	codes[0] = m_start;
-	codes[1] = m_end;
-	codes[2] = ( 2.0f/3.0f )*m_start + ( 1.0f/3.0f )*m_end;
-	codes[3] = ( 1.0f/3.0f )*m_start + ( 2.0f/3.0f )*m_end;
-
-	// match each point to the closest code
-	u8 closest[16];
-	float error = 0.0f;
-	for( int i = 0; i < count; ++i )
-	{
-		// find the closest code
-		float dist = FLT_MAX;
-		int idx = 0;
-		for( int j = 0; j < 4; ++j )
-		{
-			float d = LengthSquared( m_metric*( values[i] - codes[j] ) );
-			if( d < dist )
-			{
-				dist = d;
-				idx = j;
-			}
-		}
-		
-		// save the index
-		closest[i] = ( u8 )idx;
-		
-		// accumulate the error
-		error += dist;
-	}
-	
-	// save this scheme if it wins
-	if( error < m_besterror )
-	{
-		// remap the indices
-		u8 indices[16];
-		m_colours->RemapIndices( closest, indices );
-		
-		// save the block
-		WriteColourBlock4( m_start, m_end, indices, block );
-
-		// save the error
-		m_besterror = error;
-	}
-}
-
-} // namespace squish