List of mapSourcePoint() Examples

Examples of mapSourcePoint()

javax.media.jai.WarpAffine.mapSourcePoint()

Computes the destination point corresponding to the supplied point.

If the transform is invertible, this method returns the value of pt in the following code snippet:

 double sx = (sourcePt.getX() + 0.5F)/postScaleX; double sy = (sourcePt.getY() + 0.5F)/postScaleY; Point2D pt = (Point2D)sourcePt.clone(); pt.setLocation((invc1 + invc2*sx + invc3*sy)/preScaleX - 0.5F, (invc4 + invc5*sx + invc6*sy)/preScaleY - 0.5F);

where invc* are the inverse transform coefficients. If the transform is not invertible, null is returned.

@param sourcePt the position in source image coordinatesto map to destination image coordinates. @return a Point2D of the same class assourcePt or

null> if the transform is not invertible.
@throws IllegalArgumentException if destPt isnull.
@since JAI 1.1.2

Examples of javax.media.jai.WarpAffine.mapSourcePoint()

            Point2D computed = adapter.mapDestPoint(source);
            assertEquals("X", expected.getX(), computed.getX(), 1E-5);
            assertEquals("Y", expected.getY(), computed.getY(), 1E-5);


            // Try inverse transform.
            expected = warp   .mapSourcePoint(source);
            computed = adapter.mapSourcePoint(source);
            assertEquals("X", expected.getX(), computed.getX(), 1E-5);
            assertEquals("Y", expected.getY(), computed.getY(), 1E-5);


            // Try warpPoint

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