Header file containing functions prototypes of Graphics library. More...
Go to the source code of this file.
Macros | |
| #define | HAL_GFX_E 2.71828182845904523536f |
| e More... | |
| #define | HAL_GFX_LOG2E 1.44269504088896340736f |
| log2(e) More... | |
| #define | HAL_GFX_LOG10E 0.434294481903251827651f |
| log10(e) More... | |
| #define | HAL_GFX_LN2 0.693147180559945309417f |
| ln(2) More... | |
| #define | HAL_GFX_LN10 2.30258509299404568402f |
| ln(10) More... | |
| #define | HAL_GFX_PI 3.14159265358979323846f |
| pi More... | |
| #define | HAL_GFX_PI_2 1.57079632679489661923f |
| pi/2 More... | |
| #define | HAL_GFX_PI_4 0.785398163397448309616f |
| pi/4 More... | |
| #define | HAL_GFX_1_PI 0.318309886183790671538f |
| 1/pi More... | |
| #define | HAL_GFX_2_PI 0.636619772367581343076f |
| 2/pi More... | |
| #define | HAL_GFX_2_SQRTPI 1.12837916709551257390f |
| 2/sqrt(pi) More... | |
| #define | HAL_GFX_SQRT2 1.41421356237309504880f |
| sqrt(2) More... | |
| #define | HAL_GFX_SQRT1_2 0.707106781186547524401f |
| 1/sqrt(2) More... | |
| #define | hal_gfx_min2(a, b) (((a)<(b))?( a):(b)) |
| Find the minimum of two values. More... | |
| #define | hal_gfx_max2(a, b) (((a)>(b))?( a):(b)) |
| Find the maximum of two values. More... | |
| #define | hal_gfx_clamp(val, min, max) hal_gfx_min2((max), hal_gfx_max2((min), (val))) |
| Clamp value. More... | |
| #define | hal_gfx_abs(a) (((a)< 0 )?(-(a)):(a)) |
| Calculate the absolute value of int. More... | |
| #define | hal_gfx_absf(a) (((a)< 0.f )?(-(a)):(a)) |
| Calculate the absolute value of float. More... | |
| #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))) |
| Compare two floats. More... | |
| #define | hal_gfx_float_is_zero(x) (hal_gfx_absf(x) <= 0.00001f) |
| Checks if value x is zero. More... | |
| #define | hal_gfx_deg_to_rad(d) (0.0174532925199f * (d)) |
| Convert degrees to radians. More... | |
| #define | hal_gfx_rad_to_deg(r) (57.295779513f * (r)) |
| onvert radians to degries. More... | |
| #define | hal_gfx_i2fx(a) ((a)*0x10000) |
| Convert integer to 16.16 fixed point. More... | |
| #define | hal_gfx_floor(f) ((int)(f) - ( (int)(f) > (f) )) |
| Floor function. More... | |
| #define | hal_gfx_ceil(f) ((int)(f) + ( (int)(f) < (f) )) |
| Ceiling function. More... | |
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. More... | |
| float | hal_gfx_sqrt (float x) |
| A rough approximation of the square root of x. 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... | |
Header file containing functions prototypes of Graphics library.
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Definition in file hal_gfx_math.h.