public static bool Equals( int3 a, int3 b )
{
if( a.x != b.x ) return false;
if( a.y != b.y ) return false;
if( a.z != b.z ) return false;
return true;
}
public bool Equals( int3 b )
{
if( x != b.x ) return false;
if( y != b.y ) return false;
if( z != b.z ) return false;
return true;
}
public btHullTriangle( int a, int b, int c )
{
v = new int3( a, b, c );
n = new int3( -1, -1, -1 );
vmax = -1;
rise = 0.0;
}
int shareedge( int3 a, int3 b )
{
int i;
for( i = 0; i < 3; i++ )
{
int i1 = ( i + 1 ) % 3;
if( hasedge( a, b[i1], b[i] ) ) return 1;
}
return 0;
}
static bool hasvert( int3 t, int v )
{
return ( t[0] == v || t[1] == v || t[2] == v );
}
static bool hasedge( int3 t, int a, int b )
{
for( int i = 0; i < 3; i++ )
{
int i1 = ( i + 1 ) % 3;
if( t[i] == a && t[i1] == b ) return true;
}
return false;
}
static bool above( btVector3[] vertices, int3 t, ref btVector3 p, double epsilon )
{
btVector3 n;
btPlane.TriNormal( ref vertices[t[0]], ref vertices[t[1]], ref vertices[t[2]], out n );
p.Sub( ref vertices[t[0]], out p );
return ( n.dot( ref p ) > epsilon ); // btScalar.SIMD_EPSILON???
}