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Macros | |
#define | HAL_GFX_E 2.71828182845904523536f |
#define | HAL_GFX_LOG2E 1.44269504088896340736f |
#define | HAL_GFX_LOG10E 0.434294481903251827651f |
#define | HAL_GFX_LN2 0.693147180559945309417f |
#define | HAL_GFX_LN10 2.30258509299404568402f |
#define | HAL_GFX_PI 3.14159265358979323846f |
#define | HAL_GFX_PI_2 1.57079632679489661923f |
#define | HAL_GFX_PI_4 0.785398163397448309616f |
#define | HAL_GFX_1_PI 0.318309886183790671538f |
#define | HAL_GFX_2_PI 0.636619772367581343076f |
#define | HAL_GFX_2_SQRTPI 1.12837916709551257390f |
#define | HAL_GFX_SQRT2 1.41421356237309504880f |
#define | HAL_GFX_SQRT1_2 0.707106781186547524401f |
#define | hal_gfx_min2(a, b) (((a)<(b))?( a):(b)) |
#define | hal_gfx_max2(a, b) (((a)>(b))?( a):(b)) |
#define | hal_gfx_clamp(val, min, max) hal_gfx_min2((max), hal_gfx_max2((min), (val))) |
#define | hal_gfx_abs(a) (((a)< 0 )?(-(a)):(a)) |
#define | hal_gfx_absf(a) (((a)< 0.f )?(-(a)):(a)) |
#define | hal_gfx_floats_equal(x, y) (hal_gfx_absf((x) - (y)) <= 0.00001f * hal_gfx_min2(hal_gfx_absf(x), hal_gfx_absf(y))) |
#define | hal_gfx_float_is_zero(x) (hal_gfx_absf(x) <= 0.00001f) |
#define | hal_gfx_deg_to_rad(d) (0.0174532925199f * (d)) |
#define | hal_gfx_rad_to_deg(r) (57.295779513f * (r)) |
#define | hal_gfx_i2fx(a) ((a)*0x10000) |
#define | hal_gfx_floor(f) ((int)(f) - ( (int)(f) > (f) )) |
#define | hal_gfx_ceil(f) ((int)(f) + ( (int)(f) < (f) )) |
Functions | |
float | hal_gfx_sin (float angle_degrees) |
Fast sine approximation of a given angle. More... | |
float | hal_gfx_cos (float angle_degrees) |
Fast cosine approximation of a given angle. More... | |
float | hal_gfx_tan (float angle_degrees) |
Fast tangent approximation of a given angle. More... | |
float | hal_gfx_pow (float x, float y) |
A rough approximation of x raised to the power of y. USE WITH CAUTION! More... | |
float | hal_gfx_sqrt (float x) |
A rough approximation of the square root of x. USE WITH CAUTION! More... | |
float | hal_gfx_atan (float x) |
A floating-point approximation of the inverse tangent of x. More... | |
int | hal_gfx_f2fx (float f) |
Convert float to 16.16 fixed point. More... | |