Operation
There are two main types of sketch based modeling. In the first, the user draws a shape in the workspace using a mouse or a tablet. The system then interprets this shape as a 3D object. Users can then alter the object by cutting off or adding sections. The process of adding sections to a model is generally referred to as overdrawing. The user is never required to interact directly with the vertices or Nurbs control points.
In the second type of sketch based modeling, the user draws one or more images on paper, then scans in the images. The system then automatically converts the sketches to a 3D model.
Read more about this topic: Sketch-based Modeling
Famous quotes containing the word operation:
“Human knowledge and human power meet in one; for where the cause is not known the effect cannot be produced. Nature to be commanded must be obeyed; and that which in contemplation is as the cause is in operation as the rule.”
—Francis Bacon (1560–1626)
“Waiting for the race to become official, he began to feel as if he had as much effect on the final outcome of the operation as a single piece of a jumbo jigsaw puzzle has to its predetermined final design. Only the addition of the missing fragments of the puzzle would reveal if the picture was as he guessed it would be.”
—Stanley Kubrick (b. 1928)