Constants

PI = 3.141593

PI_2 = 1.570796

VEC2_LEN = 2

Evaluates to the number of components of a Vec2.

This symbol is useful when declaring a C array of floating point values to be used with init_from_float() and to_float(), e.g.

float v[GRAPHENE_VEC2_LEN];

// vec is defined elsewhere
graphene_vec2_to_float (&vec, v);

for (int i = 0; i < GRAPHENE_VEC2_LEN; i++)
  fprintf (stdout, "component %d: %g\n", i, v[i]);

VEC3_LEN = 3

Evaluates to the number of components of a Vec3.

This symbol is useful when declaring a C array of floating point values to be used with init_from_float() and to_float(), e.g.

float v[GRAPHENE_VEC3_LEN];

// vec is defined elsewhere
graphene_vec3_to_float (&vec, v);

for (int i = 0; i < GRAPHENE_VEC2_LEN; i++)
  fprintf (stdout, "component %d: %g\n", i, v[i]);

VEC4_LEN = 4

Evaluates to the number of components of a Vec4.

This symbol is useful when declaring a C array of floating point values to be used with init_from_float() and to_float(), e.g.

float v[GRAPHENE_VEC4_LEN];

// vec is defined elsewhere
graphene_vec4_to_float (&vec, v);

for (int i = 0; i < GRAPHENE_VEC4_LEN; i++)
  fprintf (stdout, "component %d: %g\n", i, v[i]);