utils / helpers¶
Header: cglm/util.h
Table of contents (click to go):¶
Functions:
Functions documentation¶
-
int
glm_sign
(int val)¶ - returns sign of 32 bit integer as +1, -1, 0Important: It returns 0 for zero input
- Parameters:
- [in] val an integer
- Returns:
- sign of given number
-
float
glm_signf
(float val)¶ - returns sign of 32 bit integer as +1.0, -1.0, 0.0Important: It returns 0.0f for zero input
- Parameters:
- [in] val a float
- Returns:
- sign of given number
-
float
glm_rad
(float deg)¶ - convert degree to radians
- Parameters:
- [in] deg angle in degrees
-
float
glm_deg
(float rad)¶ - convert radians to degree
- Parameters:
- [in] rad angle in radians
-
void
glm_make_rad
(float *degm)¶ - convert exsisting degree to radians. this will override degrees value
- Parameters:
- [in, out] deg pointer to angle in degrees
-
void
glm_make_deg
(float *rad)¶ - convert exsisting radians to degree. this will override radians value
- Parameters:
- [in, out] rad pointer to angle in radians
-
float
glm_pow2
(float x)¶ - multiplies given parameter with itself = x * x or powf(x, 2)
- Parameters:
- [in] x value
- Returns:
- square of a given number
-
float
glm_min
(float a, float b)¶ - returns minimum of given two values
- Parameters:
- [in] a number 1[in] b number 2
- Returns:
- minimum value
-
float
glm_max
(float a, float b)¶ - returns maximum of given two values
- Parameters:
- [in] a number 1[in] b number 2
- Returns:
- maximum value
-
void
glm_clamp
(float val, float minVal, float maxVal)¶ constrain a value to lie between two further values
- Parameters:
- [in] val input value[in] minVal minimum value[in] maxVal maximum value
- Returns:
- clamped value
-
float
glm_lerp
(float from, float to, float t)¶ linear interpolation between two number
formula: from + s * (to - from)- Parameters:
- [in] from from value[in] to to value[in] t interpolant (amount) clamped between 0 and 1
- Returns:
- interpolated value
-
bool
glm_eq
(float a, float b)¶ check if two float equal with using EPSILON
- Parameters:
- [in] a a[in] b b
- Returns:
- true if a and b equals
-
float
glm_percent
(float from, float to, float current)¶ percentage of current value between start and end value
- Parameters:
- [in] from from value[in] to to value[in] current value between from and to values
- Returns:
- clamped normalized percent (0-100 in 0-1)
-
float
glm_percentc
(float from, float to, float current)¶ clamped percentage of current value between start and end value
- Parameters:
- [in] from from value[in] to to value[in] current value between from and to values
- Returns:
- clamped normalized percent (0-100 in 0-1)