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99 lines
2.0 KiB
C
99 lines
2.0 KiB
C
#ifndef MATH_DEFS_H
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#define MATH_DEFS_H
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/*************************************************************************/
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/* math_defs.h */
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/* From https://github.com/Relintai/pandemonium_engine (MIT) */
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/*************************************************************************/
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#define CMP_EPSILON 0.00001
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#define CMP_EPSILON2 (CMP_EPSILON * CMP_EPSILON)
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#define CMP_NORMALIZE_TOLERANCE 0.000001
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#define CMP_POINT_IN_PLANE_EPSILON 0.00001
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#define Math_SQRT12 0.7071067811865475244008443621048490
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#define Math_SQRT2 1.4142135623730950488016887242
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#define Math_LN2 0.6931471805599453094172321215
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#define Math_TAU 6.2831853071795864769252867666
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#define Math_PI 3.1415926535897932384626433833
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#define Math_E 2.7182818284590452353602874714
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#define Math_INF INFINITY
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#define Math_NAN NAN
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#ifdef DEBUG_ENABLED
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#define MATH_CHECKS
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#endif
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//this epsilon is for values related to a unit size (scalar or vector len)
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#ifdef PRECISE_MATH_CHECKS
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#define UNIT_EPSILON 0.00001
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#else
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//tolerate some more floating point error normally
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#define UNIT_EPSILON 0.001
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#endif
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#define USEC_TO_SEC(m_usec) ((m_usec) / 1000000.0)
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#define SEC_TO_USEC(m_usec) ((m_usec) * 1000000.0)
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enum ClockDirection {
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CLOCKWISE,
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COUNTERCLOCKWISE
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};
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enum Orientation {
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HORIZONTAL,
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VERTICAL
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};
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enum HAlign {
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HALIGN_LEFT,
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HALIGN_CENTER,
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HALIGN_RIGHT
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};
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enum VAlign {
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VALIGN_TOP,
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VALIGN_CENTER,
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VALIGN_BOTTOM
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};
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enum Margin {
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MARGIN_LEFT,
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MARGIN_TOP,
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MARGIN_RIGHT,
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MARGIN_BOTTOM
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};
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enum Side {
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SIDE_LEFT,
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SIDE_TOP,
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SIDE_RIGHT,
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SIDE_BOTTOM
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};
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enum Corner {
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CORNER_TOP_LEFT,
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CORNER_TOP_RIGHT,
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CORNER_BOTTOM_RIGHT,
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CORNER_BOTTOM_LEFT
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};
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/**
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* The "Real" type is an abstract type used for real numbers, such as 1.5,
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* in contrast to integer numbers. Precision can be controlled with the
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* presence or absence of the REAL_T_IS_DOUBLE define.
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*/
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#ifdef REAL_T_IS_DOUBLE
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typedef double real_t;
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#else
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typedef float real_t;
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#endif
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#endif // MATH_DEFS_H
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