math_defs.hpp 3.3 KB

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  1. /**************************************************************************/
  2. /* math_defs.hpp */
  3. /**************************************************************************/
  4. /* This file is part of: */
  5. /* GODOT ENGINE */
  6. /* https://godotengine.org */
  7. /**************************************************************************/
  8. /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
  9. /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
  10. /* */
  11. /* Permission is hereby granted, free of charge, to any person obtaining */
  12. /* a copy of this software and associated documentation files (the */
  13. /* "Software"), to deal in the Software without restriction, including */
  14. /* without limitation the rights to use, copy, modify, merge, publish, */
  15. /* distribute, sublicense, and/or sell copies of the Software, and to */
  16. /* permit persons to whom the Software is furnished to do so, subject to */
  17. /* the following conditions: */
  18. /* */
  19. /* The above copyright notice and this permission notice shall be */
  20. /* included in all copies or substantial portions of the Software. */
  21. /* */
  22. /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
  23. /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
  24. /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
  25. /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
  26. /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
  27. /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
  28. /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
  29. /**************************************************************************/
  30. #pragma once
  31. namespace godot {
  32. #define CMP_EPSILON 0.00001
  33. #define CMP_EPSILON2 (CMP_EPSILON * CMP_EPSILON)
  34. #define CMP_NORMALIZE_TOLERANCE 0.000001
  35. #define CMP_POINT_IN_PLANE_EPSILON 0.00001
  36. #define Math_SQRT12 0.7071067811865475244008443621048490
  37. #define Math_SQRT2 1.4142135623730950488016887242
  38. #define Math_LN2 0.6931471805599453094172321215
  39. #define Math_TAU 6.2831853071795864769252867666
  40. #define Math_PI 3.1415926535897932384626433833
  41. #define Math_E 2.7182818284590452353602874714
  42. #ifdef DEBUG_ENABLED
  43. #define MATH_CHECKS
  44. #endif
  45. //this epsilon is for values related to a unit size (scalar or vector len)
  46. #ifdef PRECISE_MATH_CHECKS
  47. #define UNIT_EPSILON 0.00001
  48. #else
  49. //tolerate some more floating point error normally
  50. #define UNIT_EPSILON 0.001
  51. #endif
  52. #define USEC_TO_SEC(m_usec) ((m_usec) / 1000000.0)
  53. /**
  54. * The "Real" type is an abstract type used for real numbers, such as 1.5,
  55. * in contrast to integer numbers. Precision can be controlled with the
  56. * presence or absence of the REAL_T_IS_DOUBLE define.
  57. */
  58. #ifdef REAL_T_IS_DOUBLE
  59. typedef double real_t;
  60. #else
  61. typedef float real_t;
  62. #endif
  63. } // namespace godot