public void testAffineTransformReplacesManualCalculation() {
double modelOffsetX = 37.8;
double modelOffsetY = -54.1;
double viewScale = 2.5;
final AffineTransform transform = new AffineTransform();
transform.scale(viewScale, viewScale);
transform.translate(-modelOffsetX, -modelOffsetY);
double modelX = 10.4;
double modelY = 2.9;
double viewX = (modelX - modelOffsetX) * viewScale;
double viewY = (modelY - modelOffsetY) * viewScale;
final double[] result = new double[2];
transform.transform(new double[] {modelX, modelY}, 0, result, 0, 1);
assertEquals(viewX, result[0], 1e-10);
assertEquals(viewY, result[1], 1e-10);
}
}