def applyTransforms(self):
""" Use the objects translation/rotation/scaling values to generate a new transformation Matrix if changes have happened. """
# generate new transformation matrix if needed
if self.oldscaling != self.scaling or self.drotation != Vector() or self.oldpos != Vector(*self.pos):
self.transform = Transform()
self.linkTransform = Transform()
drotationTransform = Transform()
drotationTransform.applyRotation(self.drotation)
self.transform.applyScaling(self.scaling)
self.linkTransform.applyScaling(self.scaling)
self.transform = self.transform*self.oldrotTransform*drotationTransform
self.oldrotTransform = self.oldrotTransform*drotationTransform
self.transform.applyTranslation(Vector(*self.pos))
self.linkTransform.applyTranslation(Vector(*self.pos))
if self.oldscaling != self.scaling:
self.oldscaling = self.scaling.copy()
self.drotation = Vector()
if self.oldpos != Vector(*self.pos):
self.oldpos = Vector(*self.pos)
# send new transform to display service
transform_update = { "TRANSFORM_UPDATE": True,
"objectid": id(self),
"transform": self.transform
}
return transform_update
else:
return None
