C++ (Cpp) vector3d_length Examples

Example #1

File: test_vector.c Project: rumblesan/tinyray

static char * test_length() {

    Vector3D vector = vector3d(3.0, 4.0, 12.0);

    double length = vector3d_length(vector);
    mu_assert(length == 13, "Error: Vector3D length not correct");

    return 0;
}

Example #2

File: test_vector.c Project: rumblesan/tinyray

static char * test_unit() {

    Vector3D vector = vector3d(3.0, 4.0, 0.0);

    Vector3D unit = vector3d_unit(vector);
    double newLen = vector3d_length(unit);
    mu_assert(newLen == 1, "Error: Vector3D is not unit");

    return 0;
}

Example #3

File: point.c Project: china-vo/pgSphere

  float8 spoint_dist ( const SPoint * p1, const SPoint * p2 )
  {
	float8 dl = p1->lng - p2->lng;
    float8 f = (  ( sin( p1->lat )*sin( p2->lat ) + cos( p1->lat )*cos( p2->lat )*cos( dl ) ) );
    if( FPeq( f, 1.0 ) ){
   	  /* for small distances */
      Vector3D v1, v2, v3;
      spoint_vector3d(&v1, p1);
      spoint_vector3d(&v2, p2);
      vector3d_cross( &v3, &v1, &v2 );
      f = vector3d_length(&v3);
    } else {
      f = acos(f);
    }
    if ( FPzero(f) ){
      return 0.0;
    } else {
      return f;
    }
  }