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/*************************************************************************/
/* math_defs.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef MATH_DEFS_H
#define MATH_DEFS_H
#define CMP_EPSILON 0.00001
#define CMP_EPSILON2 (CMP_EPSILON * CMP_EPSILON)
#define CMP_NORMALIZE_TOLERANCE 0.000001
#define CMP_POINT_IN_PLANE_EPSILON 0.00001
#define Math_SQRT12 0.7071067811865475244008443621048490
#define Math_SQRT2 1.4142135623730950488016887242
#define Math_LN2 0.6931471805599453094172321215
#define Math_TAU 6.2831853071795864769252867666
#define Math_PI 3.1415926535897932384626433833
#define Math_E 2.7182818284590452353602874714
#ifdef DEBUG_ENABLED
#define MATH_CHECKS
#endif
//this epsilon is for values related to a unit size (scalar or vector len)
#ifdef PRECISE_MATH_CHECKS
#define UNIT_EPSILON 0.00001
#else
//tolerate some more floating point error normally
#define UNIT_EPSILON 0.001
#endif
#define USEC_TO_SEC(m_usec) ((m_usec) / 1000000.0)
enum ClockDirection {
CLOCKWISE,
COUNTERCLOCKWISE
};
enum Orientation {
HORIZONTAL,
VERTICAL
};
enum HAlign {
HALIGN_LEFT,
HALIGN_CENTER,
HALIGN_RIGHT,
HALIGN_FILL,
};
enum VAlign {
VALIGN_TOP,
VALIGN_CENTER,
VALIGN_BOTTOM
};
enum InlineAlign {
// Image alignment points.
INLINE_ALIGN_TOP_TO = 0b0000,
INLINE_ALIGN_CENTER_TO = 0b0001,
INLINE_ALIGN_BOTTOM_TO = 0b0010,
INLINE_ALIGN_IMAGE_MASK = 0b0011,
// Text alignment points.
INLINE_ALIGN_TO_TOP = 0b0000,
INLINE_ALIGN_TO_CENTER = 0b0100,
INLINE_ALIGN_TO_BASELINE = 0b1000,
INLINE_ALIGN_TO_BOTTOM = 0b1100,
INLINE_ALIGN_TEXT_MASK = 0b1100,
// Presets.
INLINE_ALIGN_TOP = INLINE_ALIGN_TOP_TO | INLINE_ALIGN_TO_TOP,
INLINE_ALIGN_CENTER = INLINE_ALIGN_CENTER_TO | INLINE_ALIGN_TO_CENTER,
INLINE_ALIGN_BOTTOM = INLINE_ALIGN_BOTTOM_TO | INLINE_ALIGN_TO_BOTTOM
};
enum Side {
SIDE_LEFT,
SIDE_TOP,
SIDE_RIGHT,
SIDE_BOTTOM
};
enum Corner {
CORNER_TOP_LEFT,
CORNER_TOP_RIGHT,
CORNER_BOTTOM_RIGHT,
CORNER_BOTTOM_LEFT
};
/**
* The "Real" type is an abstract type used for real numbers, such as 1.5,
* in contrast to integer numbers. Precision can be controlled with the
* presence or absence of the REAL_T_IS_DOUBLE define.
*/
#ifdef REAL_T_IS_DOUBLE
typedef double real_t;
#else
typedef float real_t;
#endif
#endif // MATH_DEFS_H
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