Function LineTransform

trinity/Tr2DebugRenderer.cpp:14–30

{

Matrix LineTransform( const Vector3& start, const Vector3& end )
{
	Matrix transform = IdentityMatrix();
	transform.GetY() = XMVector3Normalize( ( end - start ) * 0.5 );
	if( std::abs( transform.GetY().x ) > 0.9f )
	{
		transform.GetX() = Vector3( 0, 0, 1 );
	}
	else
	{
		transform.GetX() = Vector3( 1, 0, 0 );
	}
	transform.GetZ() = XMVector3Normalize( XMVector3Cross( transform.GetX(), transform.GetY() ) );
	transform.GetX() = XMVector3Cross( transform.GetY(), transform.GetZ() );
	transform.GetTranslation() = ( start + end ) * 0.5;
	return transform;
}

Vector2 LineNormal( const Vector2& p0, const Vector2& p1 )
{