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Improve bounding box for word

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BobLd
2020-01-31 17:53:10 +00:00
committed by Eliot Jones
parent f3fcd1b3a1
commit 7364e53bb9
3 changed files with 134 additions and 22 deletions
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24
src/UglyToad.PdfPig.Core/TransformationMatrix.cs
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@@ -360,6 +360,30 @@
E * scalar, F * scalar, row3 * scalar);
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public TransformationMatrix Inverse()
{
var a = (D * row3 - row2 * F);
var c = -(C * row3 - row2 * E);
var e = (C * F - D * E);
var b = -(B * row3 - row1 * F);
var d = (A * row3 - row1 * E);
var f = -(A * F - B * E);
var r1 = (B * row2 - row1 * D);
var r2 = -(A * row2 - row1 * C);
var r3 = (A * D - B * C);
var det = A * a + B * c + row1 * e;
return new TransformationMatrix(a, b, r1,
c, d, r2,
e, f, r3).Multiply(1.0 / det);
}
/// <summary>
/// Get the X scaling component of the current matrix.
/// </summary>