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Added XrMatrixGetAffine

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Carl Worth 2003-07-03 08:22:44 +00:00
parent 1fc2dabbd0
commit a18f4ea75b
3 changed files with 22 additions and 0 deletions
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3
ChangeLog
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@ -1,5 +1,8 @@
2003-07-03 Carl Worth <cworth@isi.edu> 2003-07-03 Carl Worth <cworth@isi.edu>
* src/xrmatrix.c (XrMatrixGetAffine): Added XrMatrixGetAffine
(from Soorya Kuloor)
* src/xr.c (XrGetAlpha): Added XrGetAlpha * src/xr.c (XrGetAlpha): Added XrGetAlpha
(XrGetRGBColor): Added XrGetRGBColor (XrGetRGBColor): Added XrGetRGBColor

6
src/Xr.h
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@ -443,6 +443,12 @@ XrMatrixSetAffine (XrMatrix *xrs,
double c, double d, double c, double d,
double tx, double ty); double tx, double ty);
XrStatus
XrMatrixGetAffine (XrMatrix *matrix,
double *a, double *b,
double *c, double *d,
double *tx, double *ty);
XrStatus XrStatus
XrMatrixTranslate (XrMatrix *matrix, double tx, double ty); XrMatrixTranslate (XrMatrix *matrix, double tx, double ty);

13
src/xrmatrix.c
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@ -104,6 +104,19 @@ XrMatrixSetAffine (XrMatrix *matrix,
return XrStatusSuccess; return XrStatusSuccess;
} }
XrStatus
XrMatrixGetAffine (XrMatrix *matrix,
double *a, double *b,
double *c, double *d,
double *tx, double *ty)
{
*a = matrix->m[0][0]; *b = matrix->m[0][1];
*c = matrix->m[1][0]; *d = matrix->m[1][1];
*tx = matrix->m[2][0]; *ty = matrix->m[2][1];
return XrStatusSuccess;
}
XrStatus XrStatus
_XrMatrixSetTranslate(XrMatrix *matrix, _XrMatrixSetTranslate(XrMatrix *matrix,
double tx, double ty) double tx, double ty)