func (this *NurbsCurve) Transform(mat *mat4.T) *NurbsCurve {
pts := Dehomogenize1d(this.controlPoints)
for i := range pts {
pts[i] = mat.MulVec3(&pts[i])
}
return &NurbsCurve{
this.degree,
Homogenize1d(pts, Weight1d(this.controlPoints)),
this.knots,
}
}
func (this *NurbsSurface) Transform(mat *mat4.T) *NurbsSurface {
pts := Dehomogenize2d(this.controlPoints)
for i := range pts {
for j := range pts[0] {
pts[i][j] = mat.MulVec3(&pts[i][j])
}
}
return &NurbsSurface{
this.degreeU,
this.degreeV,
Homogenize2d(pts, Weight2d(this.controlPoints)),
append(KnotVec(nil), this.knotsU...),
append(KnotVec(nil), this.knotsV...),
}
}