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///////////////////////////////////////////////////////////////////////
// File: ccstruct.h
// Description: ccstruct class.
// Author: Samuel Charron
//
// (C) Copyright 2006, Google Inc.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
///////////////////////////////////////////////////////////////////////
#ifndef TESSERACT_CCSTRUCT_CCSTRUCT_H_
#define TESSERACT_CCSTRUCT_CCSTRUCT_H_
#include "ccutil.h" // for CCUtil
namespace tesseract {
class TESS_API CCStruct : public CCUtil {
public:
CCStruct() = default;
~CCStruct() override;
// Globally accessible constants.
// APPROXIMATIONS of the fractions of the character cell taken by
// the descenders, ascenders, and x-height.
static const double kDescenderFraction; // = 0.25;
static const double kXHeightFraction; // = 0.5;
static const double kAscenderFraction; // = 0.25;
// Derived value giving the x-height as a fraction of cap-height.
static const double kXHeightCapRatio; // = XHeight/(XHeight + Ascender).
};
} // namespace tesseract
#endif // TESSERACT_CCSTRUCT_CCSTRUCT_H_
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