Package com.lowagie.text.pdf.parser
Class Matrix
java.lang.Object
com.lowagie.text.pdf.parser.Matrix
Keeps all the values of a 3 by 3 matrix and allows you to do some math with matrices.
- Since:
- 2.1.4
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Field Summary
FieldsModifier and TypeFieldDescriptionstatic final int
the row=1, col=1 position ('a') in the matrix.static final int
the row=1, col=2 position ('b') in the matrix.static final int
the row=1, col=3 position (always 0 for 2-D) in the matrix.static final int
the row=2, col=1 position ('c') in the matrix.static final int
the row=2, col=2 position ('d') in the matrix.static final int
the row=2, col=3 position (always 0 for 2-D) in the matrix.static final int
the row=3, col=1 ('e', or X translation) position in the matrix.static final int
the row=3, col=2 ('f', or Y translation) position in the matrix.static final int
the row=3, col=3 position (always 1 for 2-D) in the matrix.private final float[]
the values inside the matrix (the identity matrix by default). -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionboolean
Checks equality of matrices.float
get
(int index) Gets a specific value inside the matrix.int
hashCode()
Generates a hash code for this object.multiplies this matrix by 'b' and returns the result See http://en.wikipedia.org/wiki/Matrix_multiplicationSubtracts a matrix from this matrix and returns the resultstoString()
Generates a String representation of the matrix.
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Field Details
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I11
public static final int I11the row=1, col=1 position ('a') in the matrix.- See Also:
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I12
public static final int I12the row=1, col=2 position ('b') in the matrix.- See Also:
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I13
public static final int I13the row=1, col=3 position (always 0 for 2-D) in the matrix.- See Also:
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I21
public static final int I21the row=2, col=1 position ('c') in the matrix.- See Also:
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I22
public static final int I22the row=2, col=2 position ('d') in the matrix.- See Also:
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I23
public static final int I23the row=2, col=3 position (always 0 for 2-D) in the matrix.- See Also:
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I31
public static final int I31the row=3, col=1 ('e', or X translation) position in the matrix.- See Also:
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I32
public static final int I32the row=3, col=2 ('f', or Y translation) position in the matrix.- See Also:
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I33
public static final int I33the row=3, col=3 position (always 1 for 2-D) in the matrix.- See Also:
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vals
private final float[] valsthe values inside the matrix (the identity matrix by default).
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Constructor Details
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Matrix
Matrix()constructs a new Matrix with identity. -
Matrix
Matrix(float tx, float ty) Constructs a matrix that represents translation- Parameters:
tx
-ty
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Matrix
Matrix(float a, float b, float c, float d, float e, float f) Creates a Matrix with 6 specified entries- Parameters:
a
-b
-c
-d
-e
-f
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Method Details
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get
public float get(int index) Gets a specific value inside the matrix.- Parameters:
index
- an array index corresponding with a value inside the matrix- Returns:
- the value at that specific position.
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multiply
multiplies this matrix by 'b' and returns the result See http://en.wikipedia.org/wiki/Matrix_multiplication- Parameters:
by
- The matrix to multiply by- Returns:
- the resulting matrix
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subtract
Subtracts a matrix from this matrix and returns the results- Parameters:
arg
- the matrix to subtract from this matrix- Returns:
- the resulting matrix
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equals
Checks equality of matrices. -
hashCode
public int hashCode()Generates a hash code for this object. -
toString
Generates a String representation of the matrix.
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