protected double getDouble(Expression ex) { if (isConstant(ex) || sample != null) { Double result = ex.evaluate(sample, Double.class); if (result != null) { return result; } else { return -1; } } else { return -1; } }
isSizeConstant = isConstant(grSize); if (isSizeConstant) { imageSize = (int) Math.ceil(grSize.evaluate(null, Double.class));