/*
* Copyright (c) 2009-2014, Peter Abeles. All Rights Reserved.
*
* This file is part of Efficient Java Matrix Library (EJML).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.ejml.ops;
import org.ejml.data.*;
/**
* Functions for converting between matrix types. Both matrices must be the same size and their values will
* be copied.
*
* @author Peter Abeles
*/
public class ConvertMatrixType {
/**
* Generic, but slow, conversion function.
*
* @param input Input matrix.
* @param output Output matrix.
*/
public static void convert( RealMatrix64F input , RealMatrix64F output ) {
if( input.getNumRows() != output.getNumRows() )
throw new IllegalArgumentException("Number of rows do not match");
if( input.getNumCols() != output.getNumCols() )
throw new IllegalArgumentException("Number of columns do not match");
for( int i = 0; i < input.getNumRows(); i++ ) {
for( int j = 0; j < input.getNumCols(); j++ ) {
output.unsafe_set(i,j,input.unsafe_get(i,j));
}
}
}
/**
* Converts {@link FixedMatrix2x2_64F} into {@link DenseMatrix64F}.
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static DenseMatrix64F convert( FixedMatrix2x2_64F input , DenseMatrix64F output ) {
if( output == null)
output = new DenseMatrix64F(2,2);
if( input.getNumRows() != output.getNumRows() )
throw new IllegalArgumentException("Number of rows do not match");
if( input.getNumCols() != output.getNumCols() )
throw new IllegalArgumentException("Number of columns do not match");
output.data[0] = input.a11;
output.data[1] = input.a12;
output.data[2] = input.a21;
output.data[3] = input.a22;
return output;
}
/**
* Converts {@link FixedMatrix3x3_64F} into {@link DenseMatrix64F}.
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static DenseMatrix64F convert( FixedMatrix3x3_64F input , DenseMatrix64F output ) {
if( output == null)
output = new DenseMatrix64F(3,3);
if( input.getNumRows() != output.getNumRows() )
throw new IllegalArgumentException("Number of rows do not match");
if( input.getNumCols() != output.getNumCols() )
throw new IllegalArgumentException("Number of columns do not match");
output.data[0] = input.a11;
output.data[1] = input.a12;
output.data[2] = input.a13;
output.data[3] = input.a21;
output.data[4] = input.a22;
output.data[5] = input.a23;
output.data[6] = input.a31;
output.data[7] = input.a32;
output.data[8] = input.a33;
return output;
}
/**
* Converts {@link FixedMatrix4x4_64F} into {@link DenseMatrix64F}.
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static DenseMatrix64F convert( FixedMatrix4x4_64F input , DenseMatrix64F output ) {
if( output == null)
output = new DenseMatrix64F(4,4);
if( input.getNumRows() != output.getNumRows() )
throw new IllegalArgumentException("Number of rows do not match");
if( input.getNumCols() != output.getNumCols() )
throw new IllegalArgumentException("Number of columns do not match");
output.data[0] = input.a11;
output.data[1] = input.a12;
output.data[2] = input.a13;
output.data[3] = input.a14;
output.data[4] = input.a21;
output.data[5] = input.a22;
output.data[6] = input.a23;
output.data[7] = input.a24;
output.data[8] = input.a31;
output.data[9] = input.a32;
output.data[10] = input.a33;
output.data[11] = input.a34;
output.data[12] = input.a41;
output.data[13] = input.a42;
output.data[14] = input.a43;
output.data[15] = input.a44;
return output;
}
/**
* Converts {@link FixedMatrix5x5_64F} into {@link DenseMatrix64F}.
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static DenseMatrix64F convert( FixedMatrix5x5_64F input , DenseMatrix64F output ) {
if( output == null)
output = new DenseMatrix64F(5,5);
if( input.getNumRows() != output.getNumRows() )
throw new IllegalArgumentException("Number of rows do not match");
if( input.getNumCols() != output.getNumCols() )
throw new IllegalArgumentException("Number of columns do not match");
output.data[0] = input.a11;
output.data[1] = input.a12;
output.data[2] = input.a13;
output.data[3] = input.a14;
output.data[4] = input.a15;
output.data[5] = input.a21;
output.data[6] = input.a22;
output.data[7] = input.a23;
output.data[8] = input.a24;
output.data[9] = input.a25;
output.data[10] = input.a31;
output.data[11] = input.a32;
output.data[12] = input.a33;
output.data[13] = input.a34;
output.data[14] = input.a35;
output.data[15] = input.a41;
output.data[16] = input.a42;
output.data[17] = input.a43;
output.data[18] = input.a44;
output.data[19] = input.a45;
output.data[20] = input.a51;
output.data[21] = input.a52;
output.data[22] = input.a53;
output.data[23] = input.a54;
output.data[24] = input.a55;
return output;
}
/**
* Converts {@link FixedMatrix6x6_64F} into {@link DenseMatrix64F}.
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static DenseMatrix64F convert( FixedMatrix6x6_64F input , DenseMatrix64F output ) {
if( output == null)
output = new DenseMatrix64F(6,6);
if( input.getNumRows() != output.getNumRows() )
throw new IllegalArgumentException("Number of rows do not match");
if( input.getNumCols() != output.getNumCols() )
throw new IllegalArgumentException("Number of columns do not match");
output.data[0] = input.a11;
output.data[1] = input.a12;
output.data[2] = input.a13;
output.data[3] = input.a14;
output.data[4] = input.a15;
output.data[5] = input.a16;
output.data[6] = input.a21;
output.data[7] = input.a22;
output.data[8] = input.a23;
output.data[9] = input.a24;
output.data[10] = input.a25;
output.data[11] = input.a26;
output.data[12] = input.a31;
output.data[13] = input.a32;
output.data[14] = input.a33;
output.data[15] = input.a34;
output.data[16] = input.a35;
output.data[17] = input.a36;
output.data[18] = input.a41;
output.data[19] = input.a42;
output.data[20] = input.a43;
output.data[21] = input.a44;
output.data[22] = input.a45;
output.data[23] = input.a46;
output.data[24] = input.a51;
output.data[25] = input.a52;
output.data[26] = input.a53;
output.data[27] = input.a54;
output.data[28] = input.a55;
output.data[29] = input.a56;
output.data[30] = input.a61;
output.data[31] = input.a62;
output.data[32] = input.a63;
output.data[33] = input.a64;
output.data[34] = input.a65;
output.data[35] = input.a66;
return output;
}
/**
* Converts {@link DenseMatrix64F} into {@link FixedMatrix2x2_64F}
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static FixedMatrix2x2_64F convert( DenseMatrix64F input , FixedMatrix2x2_64F output ) {
if( output == null)
output = new FixedMatrix2x2_64F();
if( input.getNumRows() != output.getNumRows() )
throw new IllegalArgumentException("Number of rows do not match");
if( input.getNumCols() != output.getNumCols() )
throw new IllegalArgumentException("Number of columns do not match");
output.a11 = input.data[0];
output.a12 = input.data[1];
output.a21 = input.data[2];
output.a22 = input.data[3];
return output;
}
/**
* Converts {@link DenseMatrix64F} into {@link FixedMatrix3x3_64F}
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static FixedMatrix3x3_64F convert( DenseMatrix64F input , FixedMatrix3x3_64F output ) {
if( output == null)
output = new FixedMatrix3x3_64F();
if( input.getNumRows() != output.getNumRows() )
throw new IllegalArgumentException("Number of rows do not match");
if( input.getNumCols() != output.getNumCols() )
throw new IllegalArgumentException("Number of columns do not match");
output.a11 = input.data[0];
output.a12 = input.data[1];
output.a13 = input.data[2];
output.a21 = input.data[3];
output.a22 = input.data[4];
output.a23 = input.data[5];
output.a31 = input.data[6];
output.a32 = input.data[7];
output.a33 = input.data[8];
return output;
}
/**
* Converts {@link DenseMatrix64F} into {@link FixedMatrix4x4_64F}
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static FixedMatrix4x4_64F convert( DenseMatrix64F input , FixedMatrix4x4_64F output ) {
if( output == null)
output = new FixedMatrix4x4_64F();
if( input.getNumRows() != output.getNumRows() )
throw new IllegalArgumentException("Number of rows do not match");
if( input.getNumCols() != output.getNumCols() )
throw new IllegalArgumentException("Number of columns do not match");
output.a11 = input.data[0];
output.a12 = input.data[1];
output.a13 = input.data[2];
output.a14 = input.data[3];
output.a21 = input.data[4];
output.a22 = input.data[5];
output.a23 = input.data[6];
output.a24 = input.data[7];
output.a31 = input.data[8];
output.a32 = input.data[9];
output.a33 = input.data[10];
output.a34 = input.data[11];
output.a41 = input.data[12];
output.a42 = input.data[13];
output.a43 = input.data[14];
output.a44 = input.data[15];
return output;
}
/**
* Converts {@link DenseMatrix64F} into {@link FixedMatrix5x5_64F}
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static FixedMatrix5x5_64F convert( DenseMatrix64F input , FixedMatrix5x5_64F output ) {
if( output == null)
output = new FixedMatrix5x5_64F();
if( input.getNumRows() != output.getNumRows() )
throw new IllegalArgumentException("Number of rows do not match");
if( input.getNumCols() != output.getNumCols() )
throw new IllegalArgumentException("Number of columns do not match");
output.a11 = input.data[0];
output.a12 = input.data[1];
output.a13 = input.data[2];
output.a14 = input.data[3];
output.a15 = input.data[4];
output.a21 = input.data[5];
output.a22 = input.data[6];
output.a23 = input.data[7];
output.a24 = input.data[8];
output.a25 = input.data[9];
output.a31 = input.data[10];
output.a32 = input.data[11];
output.a33 = input.data[12];
output.a34 = input.data[13];
output.a35 = input.data[14];
output.a41 = input.data[15];
output.a42 = input.data[16];
output.a43 = input.data[17];
output.a44 = input.data[18];
output.a45 = input.data[19];
output.a51 = input.data[20];
output.a52 = input.data[21];
output.a53 = input.data[22];
output.a54 = input.data[23];
output.a55 = input.data[24];
return output;
}
/**
* Converts {@link DenseMatrix64F} into {@link FixedMatrix6x6_64F}
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static FixedMatrix6x6_64F convert( DenseMatrix64F input , FixedMatrix6x6_64F output ) {
if( output == null)
output = new FixedMatrix6x6_64F();
if( input.getNumRows() != output.getNumRows() )
throw new IllegalArgumentException("Number of rows do not match");
if( input.getNumCols() != output.getNumCols() )
throw new IllegalArgumentException("Number of columns do not match");
output.a11 = input.data[0];
output.a12 = input.data[1];
output.a13 = input.data[2];
output.a14 = input.data[3];
output.a15 = input.data[4];
output.a16 = input.data[5];
output.a21 = input.data[6];
output.a22 = input.data[7];
output.a23 = input.data[8];
output.a24 = input.data[9];
output.a25 = input.data[10];
output.a26 = input.data[11];
output.a31 = input.data[12];
output.a32 = input.data[13];
output.a33 = input.data[14];
output.a34 = input.data[15];
output.a35 = input.data[16];
output.a36 = input.data[17];
output.a41 = input.data[18];
output.a42 = input.data[19];
output.a43 = input.data[20];
output.a44 = input.data[21];
output.a45 = input.data[22];
output.a46 = input.data[23];
output.a51 = input.data[24];
output.a52 = input.data[25];
output.a53 = input.data[26];
output.a54 = input.data[27];
output.a55 = input.data[28];
output.a56 = input.data[29];
output.a61 = input.data[30];
output.a62 = input.data[31];
output.a63 = input.data[32];
output.a64 = input.data[33];
output.a65 = input.data[34];
output.a66 = input.data[35];
return output;
}
/**
* Converts {@link FixedMatrix2_64F} into {@link DenseMatrix64F}.
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static DenseMatrix64F convert( FixedMatrix2_64F input , DenseMatrix64F output ) {
if( output == null)
output = new DenseMatrix64F(2,1);
if( output.getNumRows() != 1 && output.getNumCols() != 1 )
throw new IllegalArgumentException("One row or column must have a length of 1 for it to be a vector");
int length = Math.max(output.getNumRows(),output.getNumCols());
if( length != 2 )
throw new IllegalArgumentException("Length of input vector is not 2. It is "+length);
output.data[0] = input.a1;
output.data[1] = input.a2;
return output;
}
/**
* Converts {@link FixedMatrix3_64F} into {@link DenseMatrix64F}.
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static DenseMatrix64F convert( FixedMatrix3_64F input , DenseMatrix64F output ) {
if( output == null)
output = new DenseMatrix64F(3,1);
if( output.getNumRows() != 1 && output.getNumCols() != 1 )
throw new IllegalArgumentException("One row or column must have a length of 1 for it to be a vector");
int length = Math.max(output.getNumRows(),output.getNumCols());
if( length != 3 )
throw new IllegalArgumentException("Length of input vector is not 3. It is "+length);
output.data[0] = input.a1;
output.data[1] = input.a2;
output.data[2] = input.a3;
return output;
}
/**
* Converts {@link FixedMatrix4_64F} into {@link DenseMatrix64F}.
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static DenseMatrix64F convert( FixedMatrix4_64F input , DenseMatrix64F output ) {
if( output == null)
output = new DenseMatrix64F(4,1);
if( output.getNumRows() != 1 && output.getNumCols() != 1 )
throw new IllegalArgumentException("One row or column must have a length of 1 for it to be a vector");
int length = Math.max(output.getNumRows(),output.getNumCols());
if( length != 4 )
throw new IllegalArgumentException("Length of input vector is not 4. It is "+length);
output.data[0] = input.a1;
output.data[1] = input.a2;
output.data[2] = input.a3;
output.data[3] = input.a4;
return output;
}
/**
* Converts {@link FixedMatrix5_64F} into {@link DenseMatrix64F}.
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static DenseMatrix64F convert( FixedMatrix5_64F input , DenseMatrix64F output ) {
if( output == null)
output = new DenseMatrix64F(5,1);
if( output.getNumRows() != 1 && output.getNumCols() != 1 )
throw new IllegalArgumentException("One row or column must have a length of 1 for it to be a vector");
int length = Math.max(output.getNumRows(),output.getNumCols());
if( length != 5 )
throw new IllegalArgumentException("Length of input vector is not 5. It is "+length);
output.data[0] = input.a1;
output.data[1] = input.a2;
output.data[2] = input.a3;
output.data[3] = input.a4;
output.data[4] = input.a5;
return output;
}
/**
* Converts {@link FixedMatrix6_64F} into {@link DenseMatrix64F}.
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static DenseMatrix64F convert( FixedMatrix6_64F input , DenseMatrix64F output ) {
if( output == null)
output = new DenseMatrix64F(6,1);
if( output.getNumRows() != 1 && output.getNumCols() != 1 )
throw new IllegalArgumentException("One row or column must have a length of 1 for it to be a vector");
int length = Math.max(output.getNumRows(),output.getNumCols());
if( length != 6 )
throw new IllegalArgumentException("Length of input vector is not 6. It is "+length);
output.data[0] = input.a1;
output.data[1] = input.a2;
output.data[2] = input.a3;
output.data[3] = input.a4;
output.data[4] = input.a5;
output.data[5] = input.a6;
return output;
}
/**
* Converts {@link DenseMatrix64F} into {@link FixedMatrix2_64F}
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static FixedMatrix2_64F convert( DenseMatrix64F input , FixedMatrix2_64F output ) {
if( output == null)
output = new FixedMatrix2_64F();
if( input.getNumRows() != 1 && input.getNumCols() != 1 )
throw new IllegalArgumentException("One row or column must have a length of 1 for it to be a vector");
int length = Math.max(input.getNumRows(),input.getNumCols());
if( length != 2 )
throw new IllegalArgumentException("Length of input vector is not 2. It is "+length);
output.a1 = input.data[0];
output.a2 = input.data[1];
return output;
}
/**
* Converts {@link DenseMatrix64F} into {@link FixedMatrix3_64F}
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static FixedMatrix3_64F convert( DenseMatrix64F input , FixedMatrix3_64F output ) {
if( output == null)
output = new FixedMatrix3_64F();
if( input.getNumRows() != 1 && input.getNumCols() != 1 )
throw new IllegalArgumentException("One row or column must have a length of 1 for it to be a vector");
int length = Math.max(input.getNumRows(),input.getNumCols());
if( length != 3 )
throw new IllegalArgumentException("Length of input vector is not 3. It is "+length);
output.a1 = input.data[0];
output.a2 = input.data[1];
output.a3 = input.data[2];
return output;
}
/**
* Converts {@link DenseMatrix64F} into {@link FixedMatrix4_64F}
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static FixedMatrix4_64F convert( DenseMatrix64F input , FixedMatrix4_64F output ) {
if( output == null)
output = new FixedMatrix4_64F();
if( input.getNumRows() != 1 && input.getNumCols() != 1 )
throw new IllegalArgumentException("One row or column must have a length of 1 for it to be a vector");
int length = Math.max(input.getNumRows(),input.getNumCols());
if( length != 4 )
throw new IllegalArgumentException("Length of input vector is not 4. It is "+length);
output.a1 = input.data[0];
output.a2 = input.data[1];
output.a3 = input.data[2];
output.a4 = input.data[3];
return output;
}
/**
* Converts {@link DenseMatrix64F} into {@link FixedMatrix5_64F}
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static FixedMatrix5_64F convert( DenseMatrix64F input , FixedMatrix5_64F output ) {
if( output == null)
output = new FixedMatrix5_64F();
if( input.getNumRows() != 1 && input.getNumCols() != 1 )
throw new IllegalArgumentException("One row or column must have a length of 1 for it to be a vector");
int length = Math.max(input.getNumRows(),input.getNumCols());
if( length != 5 )
throw new IllegalArgumentException("Length of input vector is not 5. It is "+length);
output.a1 = input.data[0];
output.a2 = input.data[1];
output.a3 = input.data[2];
output.a4 = input.data[3];
output.a5 = input.data[4];
return output;
}
/**
* Converts {@link DenseMatrix64F} into {@link FixedMatrix6_64F}
*
* @param input Input matrix.
* @param output Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static FixedMatrix6_64F convert( DenseMatrix64F input , FixedMatrix6_64F output ) {
if( output == null)
output = new FixedMatrix6_64F();
if( input.getNumRows() != 1 && input.getNumCols() != 1 )
throw new IllegalArgumentException("One row or column must have a length of 1 for it to be a vector");
int length = Math.max(input.getNumRows(),input.getNumCols());
if( length != 6 )
throw new IllegalArgumentException("Length of input vector is not 6. It is "+length);
output.a1 = input.data[0];
output.a2 = input.data[1];
output.a3 = input.data[2];
output.a4 = input.data[3];
output.a5 = input.data[4];
output.a6 = input.data[5];
return output;
}
/**
* Converts {@link DenseMatrix64F} into {@link BlockMatrix64F}
*
* Can't handle null output matrix since block size needs to be specified.
*
* @param src Input matrix.
* @param dst Output matrix.
*/
public static void convert( DenseMatrix64F src , BlockMatrix64F dst ) {
if( src.numRows != dst.numRows || src.numCols != dst.numCols )
throw new IllegalArgumentException("Must be the same size.");
for( int i = 0; i < dst.numRows; i += dst.blockLength ) {
int blockHeight = Math.min( dst.blockLength , dst.numRows - i);
for( int j = 0; j < dst.numCols; j += dst.blockLength ) {
int blockWidth = Math.min( dst.blockLength , dst.numCols - j);
int indexDst = i*dst.numCols + blockHeight*j;
int indexSrcRow = i*dst.numCols + j;
for( int k = 0; k < blockHeight; k++ ) {
System.arraycopy(src.data,indexSrcRow,dst.data,indexDst,blockWidth);
indexDst += blockWidth;
indexSrcRow += dst.numCols;
}
}
}
}
/**
* Converts {@link BlockMatrix64F} into {@link DenseMatrix64F}
*
* @param src Input matrix.
* @param dst Output matrix. If null a new matrix will be declared.
* @return Converted matrix.
*/
public static DenseMatrix64F convert( BlockMatrix64F src , DenseMatrix64F dst ) {
if( dst != null ) {
if( dst.numRows != src.numRows || dst.numCols != src.numCols )
throw new IllegalArgumentException("Must be the same size.");
} else {
dst = new DenseMatrix64F(src.numRows,src.numCols);
}
for( int i = 0; i < src.numRows; i += src.blockLength ) {
int blockHeight = Math.min( src.blockLength , src.numRows - i);
for( int j = 0; j < src.numCols; j += src.blockLength ) {
int blockWidth = Math.min( src.blockLength , src.numCols - j);
int indexSrc = i*src.numCols + blockHeight*j;
int indexDstRow = i*dst.numCols + j;
for( int k = 0; k < blockHeight; k++ ) {
System.arraycopy(src.data,indexSrc,dst.data,indexDstRow,blockWidth);
indexSrc += blockWidth;
indexDstRow += dst.numCols;
}
}
}
return dst;
}
}
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