def prepare(V): """Prepare the surface for slicing operation.""" global VA V = V.translate(-V.center()) P = V.center() print("Initial P = %s" % P) VA = draw(V,bbox=None,color='black') area,norm = surface.areaNormals(V.f) N = norm[0] return V,P,N
def testview(F,V,P): global VA,waiting p = array(GD.canvas.camera.getCenter()) waiting = True while waiting: GD.app.processEvents() p -= array(GD.canvas.camera.getCenter()) print("TRANSLATE: %s" % p) m = GD.canvas.camera.getRot() P += p print("TOTAL TRANSLATE: %s" % P) V = V.affine(inverse(m[0:3,0:3])).translate(-P) print(V.center()) print(F.center()) undraw(VA) VA = draw(V) area,norm = surface.areaNormals(V.f) N = norm[0] return P,N