public void drawRenderedImage(BufferedImage img, AffineTransform at) {
Log.d(
"drawRenderedImage",
"sx: "
+ at.getScaleX()
+ ", sy: "
+ at.getScaleY()
+ ", tx: "
+ at.getTranslateX()
+ ", ty: "
+ at.getTranslateY());
Matrix m = new Matrix();
float[] values = new float[9];
values[Matrix.MSCALE_X] = (float) at.getScaleX();
values[Matrix.MSCALE_Y] = (float) at.getScaleY();
values[Matrix.MTRANS_X] = (float) at.getTranslateX();
values[Matrix.MTRANS_Y] = (float) at.getTranslateY();
values[Matrix.MSKEW_X] = (float) at.getShearX();
values[Matrix.MSKEW_Y] = (float) at.getShearY();
values[Matrix.MPERSP_2] = 1;
m.setValues(values);
canvas.drawBitmap(img.bm, m, paint);
}
private static AffineTransform extractRotation(
Point2D.Double pt, AffineTransform tx, boolean andTranslation) {
tx.deltaTransform(pt, pt);
AffineTransform rtx = AffineTransform.getRotateInstance(pt.x, pt.y);
try {
AffineTransform rtxi = rtx.createInverse();
double dx = tx.getTranslateX();
double dy = tx.getTranslateY();
tx.preConcatenate(rtxi);
if (andTranslation) {
if (dx != 0 || dy != 0) {
tx.setTransform(tx.getScaleX(), tx.getShearY(), tx.getShearX(), tx.getScaleY(), 0, 0);
rtx.setTransform(
rtx.getScaleX(), rtx.getShearY(), rtx.getShearX(), rtx.getScaleY(), dx, dy);
}
}
} catch (NoninvertibleTransformException e) {
return null;
}
return rtx;
}