Math Random Functions
float rand()
Generate a floating point random value in range [0,1). The function returns system rand() / RAND_MAX.Return value
A pseudo-random number between 0.0 and 1.0.Examples
Source code (UnigineScript)
forloop(int i = 0; 4) {
printf("%s\n",typeinfo(rand()));
}
/*
result is:
float: 0.510393
float: 0.638238
float: 0.406844
float: 0.407974
*/variable rand(variable from, variable to)
Generate a random value in range [to,from). For vectors values are obtained per component.Arguments
- variable from - From value. Can be the following types:
- variable to - To value. Can be the following types:
- int, long, float or double if the first argument is either int, float or double.
- string if the first argument is int:
- If a string is empty, it will equal to int(0).
- If a string is nonempty, it will equal to int(1).
- vec3 or dvec3 if the first argument is vec3
- vec4 or dvec4 if the first argument is vec4
- dvec3 if the first argument is dvec3
- dvec4 if the first argument is dvec4
- ivec3 if the first argument is ivec3
- ivec4 if the first argument is ivec4
Return value
A pseudo-random number between from and to.Examples
Source code (UnigineScript)
printf("%s\n",typeinfo(rand(-2,3)));
printf("%s\n",typeinfo(rand(-3.0,2)));
printf("%s\n",typeinfo(rand(vec3(-1,-2,-3),vec3(1,2,3))));
/*
result is:
int: 1
float: 1.5561
vec3: 0.19138 1.81164 -0.688218
*/void srand(int seed)
Set a new sequence of random numbers. Function calls system srand() function.Arguments
- int seed - Seed value for system random number generator.
Last update: 2017-07-03
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