org.apache.fop.render.pdf
Class CTMHelper
java.lang.Object
org.apache.fop.render.pdf.CTMHelper
public final class CTMHelper
extends java.lang.Object
CTMHelper converts FOP transformation matrices to those
suitable for use by the PDFRenderer. The e and f elements
of the matrix will be divided by 1000 as FOP uses millipoints
as it's default user space and PDF uses points.
static double[] | toPDFArray(CTM sourceMatrix) - Creates an array of six doubles from the source CTM.
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static CTM | toPDFCTM(CTM sourceMatrix) - Creates a new CTM based in the sourceMatrix.
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static String | toPDFString(AffineTransform transform, boolean convertMillipoints) - Converts the AffineTransform instance to a string for use in the PDFRenderer
cm operations.
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static String | toPDFString(CTM sourceMatrix) - Converts the sourceMatrix to a string for use in the PDFRenderer cm operations.
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toPDFArray
public static double[] toPDFArray(CTM sourceMatrix)
Creates an array of six doubles from the source CTM.
For example:
org.apache.fop.area.CTM inCTM =
new org.apache.fop.area.CTM(1.0, 0.0, 0.0, 1.0, 1000.0, 1000.0);
double matrix[] = org.apache.fop.render.pdf.CTMHelper.toPDFArray(ctm);
will return a new array where matrix[0] == 1.0, matrix[1] == 0.0,
matrix[2] == 0.0, matrix[3] == 1.0,
matrix[4] == 1.0 and matrix[5] == 1.0.
sourceMatrix
- - The matrix to convert.
- an array of doubles containing the converted matrix.
toPDFCTM
public static CTM toPDFCTM(CTM sourceMatrix)
Creates a new CTM based in the sourceMatrix.
For example:
org.apache.fop.area.CTM inCTM =
new org.apache.fop.area.CTM(1.0, 0.0, 0.0, 1.0, 1000.0, 1000.0);
org.apache.fop.area.CTM outCTM =
org.apache.fop.render.pdf.CTMHelper.toPDFCTM(ctm);
will return a new CTM where a == 1.0, b == 0.0, c == 0.0, d == 1.0, e == 1.0 and f == 1.0.
sourceMatrix
- - The matrix to convert.
toPDFString
public static String toPDFString(AffineTransform transform,
boolean convertMillipoints)
Converts the AffineTransform instance to a string for use in the PDFRenderer
cm operations.
transform
- The matrix to convert.convertMillipoints
- Indicates that the matrix needs to be converted from millipoints
to points.
- a space seperated string containing the matrix elements.
toPDFString
public static String toPDFString(CTM sourceMatrix)
Converts the sourceMatrix to a string for use in the PDFRenderer cm operations.
For example:
org.apache.fop.area.CTM ctm =
new org.apache.fop.area.CTM(1.0, 0.0, 0.0, 1.0, 1000.0, 1000.0);
String pdfMatrix = org.apache.fop.render.pdf.CTMHelper.toPDFString(ctm);
will return the string "
1.0 0.0 0.0 1.0 1.0 1.0
".
sourceMatrix
- - The matrix to convert.
- a space seperated string containing the matrix elements.
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