func (t *Triangle) ToPlane() *Plane {
v1 := gnr.VectorDifference(t.Points[1], t.Points[0])
v2 := gnr.VectorDifference(t.Points[2], t.Points[0])
normal := gnr.VectorCross(v1, v2)
return &Plane{
Normal: normal,
Distance: -gnr.VectorProduct(normal, t.Points[0]),
}
}
func (t *Triangle) Area() float64 {
v1 := gnr.VectorDifference(t.Points[1], t.Points[0])
v2 := gnr.VectorDifference(t.Points[2], t.Points[0])
return gnr.VectorCross(v1, v2).Magnitude() / 2
}