CVConst.h

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#pragma once
 
#include "CVTypes.h"
 
// system
#include <cfloat>
#include <cmath>
#include <limits>
 
#ifndef M_PI
constexpr double M_PI = 3.14159265358979323846;
#endif
 
#ifndef M_PI_2
constexpr double M_PI_2 = 1.57079632679489661923;
#endif
 
#ifndef SQRT_3
constexpr double SQRT_3 = 1.7320508075688772935274463415059;
#endif
 
#ifndef ZERO_TOLERANCE
[[deprecated(
        "Use ZERO_TOLERANCE_F/ZERO_TOLERANCE_D or "
        "cloudViewer::LessThanEpsilon()/"
        "cloudViewer::GreaterThanEpsilon()")]] constexpr double ZERO_TOLERANCE =
        std::numeric_limits<double>::epsilon();
#endif
 
constexpr float ZERO_TOLERANCE_F = std::numeric_limits<float>::epsilon();
 
constexpr double ZERO_TOLERANCE_D = static_cast<double>(ZERO_TOLERANCE_F);
 
constexpr double ZERO_SQUARED_TOLERANCE_D = ZERO_TOLERANCE_D * ZERO_TOLERANCE_D;
 
constexpr ScalarType ZERO_TOLERANCE_SCALAR =
        std::numeric_limits<ScalarType>::epsilon();
 
constexpr ScalarType ZERO_TOLERANCE_POINT_COORDINATE =
        std::numeric_limits<PointCoordinateType>::epsilon();
 
 
constexpr PointCoordinateType PC_ONE = static_cast<PointCoordinateType>(1.0);
 
 
constexpr PointCoordinateType PC_NAN =
        std::numeric_limits<PointCoordinateType>::quiet_NaN();
 
 
constexpr ScalarType NAN_VALUE = std::numeric_limits<ScalarType>::quiet_NaN();
 
constexpr float MIN_POINT_SIZE_F = 1.0f;
constexpr float MAX_POINT_SIZE_F = 16.0f;
constexpr float MIN_LINE_WIDTH_F = 1.0f;
constexpr float MAX_LINE_WIDTH_F = 16.0f;
 
// Min and max zoom ratio (relative)
static constexpr float CC_GL_MAX_ZOOM_RATIO = 1.0e6f;
static constexpr float CC_GL_MIN_ZOOM_RATIO = 1.0e-6f;
 
constexpr double EPSILON_VALUE = 1.0e-5;
 
// Point visibility states
// By default visibility is expressed relatively to the sensor point of view.
// Warning: 'visible' value must always be the lowest!
constexpr unsigned char POINT_VISIBLE =
        0; 
constexpr unsigned char POINT_HIDDEN =
        1; 
constexpr unsigned char POINT_OUT_OF_RANGE =
        2; 
constexpr unsigned char POINT_OUT_OF_FOV =
        4; 
enum CC_VIEW_ORIENTATION {
    CC_TOP_VIEW,    
    CC_BOTTOM_VIEW, 
    CC_FRONT_VIEW,  
    CC_BACK_VIEW,   
    CC_LEFT_VIEW,   
    CC_RIGHT_VIEW,  
    CC_ISO_VIEW_1,  
    CC_ISO_VIEW_2,  
};
 
enum CHAMFER_DISTANCE_TYPE {
    CHAMFER_111 = 0, 
    CHAMFER_345 = 1  
};
 
enum CV_LOCAL_MODEL_TYPES {
    NO_MODEL = 0, 
    LS = 1,       
    TRI = 2,      
    QUADRIC = 3   
};
 
constexpr unsigned CV_LOCAL_MODEL_MIN_SIZE[] = {
        1, 
        3, 
        3, 
        6, 
};