| 摘要 |
A user interface is described which displays a shape and enables a user to manipulate that shape by dividing it into a number of regions. Each region has an associated term which is made up from one or more constraints. A mathematical function, such as an objective function, is generated from the resultant graphical representation of the shape, where the function contains a term for each region and where each term is weighted according to the size of the corresponding region.
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