Examples of java.awt.geom.AffineTransform.preConcatenate()

java.awt.geom.AffineTransform.preConcatenate()
Concatenates an AffineTransform Tx to this AffineTransform Cx in a less commonly used way such that Tx modifies the coordinate transformation relative to the absolute pixel space rather than relative to the existing user space. Cx is updated to perform the combined transformation. Transforming a point p by the updated transform Cx' is equivalent to first transforming p by the original transform Cx and then transforming the result by Tx like this: Cx'(p) = Tx(Cx(p)) In matrix notation, if this transform Cx is represented by the matrix [this] and Tx is represented by the matrix [Tx] then this method does the following:
```
 [this] = [Tx] x [this] 
```
@param Tx the AffineTransform object to beconcatenated with this AffineTransform object. @see #concatenate @since 1.2

                    if (tat == null) {
                        tat = new AffineTransform();
                    }
                    AffineTransform at = new AffineTransform(cat);
                    try {
                        at.preConcatenate(tat.createInverse());
                        return at;
                    } catch (NoninvertibleTransformException ex) {
                        throw currentElt.createSVGException
                            (SVGException.SVG_MATRIX_NOT_INVERTABLE,
                             "noninvertiblematrix",

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            // 'y' attribute - default is 0
            float y = ue.getY().getAnimVal().getValue();


            AffineTransform xy = AffineTransform.getTranslateInstance(x, y);
            xy.preConcatenate(at);
            return xy;
        } catch (LiveAttributeException ex) {
            throw new BridgeException(ctx, ex);
        }
     }

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            }
                


            AffineTransform at = gn.getGlobalTransform();
            Rectangle2D gnBounds = gn.getSensitiveBounds();
            at.preConcatenate(ati);
            if (gnBounds != null)
                gnBounds = at.createTransformedShape(gnBounds).getBounds2D();
                
            if ((gnBounds == null) || 
                (!rect.intersects(gnBounds))) {

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            }
                


            AffineTransform at = gn.getGlobalTransform();
            Rectangle2D gnBounds = gn.getSensitiveBounds();
            at.preConcatenate(ati);
            if (gnBounds != null)
                gnBounds = at.createTransformedShape(gnBounds).getBounds2D();


            if ((gnBounds == null) || 
                (!rect.intersects(gnBounds))) {

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        if (gnBounds == null) return false;




        AffineTransform at = gn.getGlobalTransform();
        at.preConcatenate(ati);


        gnBounds = at.createTransformedShape(gnBounds).getBounds2D();
        if (!rect.intersects(gnBounds))
            return false;

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        try {
            ati = ati.createInverse();
        } catch (NoninvertibleTransformException e) {  }


        AffineTransform at = gn.getGlobalTransform();
        at.preConcatenate(ati);


        gnBounds = at.createTransformedShape(gnBounds).getBounds2D();


        return rect.contains(gnBounds);
    }

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        TextNode tn      = (TextNode)txtBridge.node;
        Element  txtElem = txtBridge.e;


        AffineTransform at = tn.getGlobalTransform();
        at.preConcatenate(ati);


        Rectangle2D tnRect;
        tnRect = tn.getBounds();
        tnRect = at.createTransformedShape(tnRect).getBounds2D();
        if (!rect.intersects(tnRect)) return false;

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                    at.inverseTransform(pt0, pt0);
                    at.inverseTransform(pt, pt);
                    double tx = pt0.getX() - pt.getX();
                    double ty = pt0.getY() - pt.getY();
                    at = svgCanvas.getRenderingTransform();
                    at.preConcatenate
                        (AffineTransform.getTranslateInstance(tx, ty));
                    svgCanvas.setRenderingTransform(at);
                } catch (NoninvertibleTransformException ex) { }
            }
        }

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        destPt = aff.transform(destPt, null);




        // Translate what will be at minX,minY to zero, zero
        // which where java2d will think the real minX,minY is.
        aff.preConcatenate(AffineTransform.getTranslateInstance
                           (-destPt.getX(), -destPt.getY()));


        AffineTransformOp op = new AffineTransformOp(aff, hints);


        BufferedImage srcBI, myBI;

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            }
                


            AffineTransform at = gn.getGlobalTransform();
            Rectangle2D gnBounds = gn.getSensitiveBounds();
            at.preConcatenate(ati);
            if (gnBounds != null)
                gnBounds = at.createTransformedShape(gnBounds).getBounds2D();
                
            if ((gnBounds == null) || 
                (!rect.intersects(gnBounds))) {

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