3Delight For Maya 4.0: 3.13 The CSG Node

Short Contents

3.13 The CSG Node

3.13.1 Overview

The CSG (Constructive Solid Geometry) Node is used to define how some objects are combined together to form a solid. It operates on transforms, shapes and on other CSG nodes. It is possible to define complex solids that result from multiple boolean operations by selecting a CSG node as an operand of another CSG node.

3.13.2 User Interface

**Figure 3.53**: The CSG node panel

` Operation'

This attribute specifies the type of boolean operation that will be applied to the selected nodes. Available options are:

` Union': The resulting solid will be the union of the selected nodes. This is the default.
` Intersection': The resulting solid will be the intersection of the selected nodes.
` Difference': The resulting solid will be the difference between the selected nodes.

` Select closed objects'

This button brings up a selection window that lists geometric objects shapes, transforms, CSG nodes and sets. Each selected item will be considered as a single primitive for the CSG operation. It is not recommended to select both a shape and a set that includes that shape.

` Select closed objects to substract'

This button is only available when the Operation attribute is set to `Difference'. It brings up a selection window identical to the one brought up by the `Select closed objects' button. The items selected here will be substracted from the items selected via the `Select closed objects' button.

NOTE
The `Difference' operator is only defined when two set of objects are available, contrary to the `Union' and `Intersection' operators that are defined with a single set of objects. This explains the need for a second object selector.

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