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Creating
and combining areas (Regions)
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Creating
and combining areas (Regions)
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The regions are two-dimensional enclosed areas that have physical properties such as centroids or centers of mass. To calculate the total area, it is possible to combine existing regions into a single, complex region.
The regions are two-dimensional enclosed areas created from objects that form closed loops. The loops can be combinations of lines, polylines, circles, arcs, ellipses, elliptical arcs and splines. The objects that compose the loops must either be closed or form closed areas, sharing endpoints with other objects.
The regions can be used for applying hatching and shading
It is possible to create regions out of multiple loops and out of open curves whose endpoints are connected and form loops. It is also possible to create regions from open objects that intersect to form a closed area: for example, intersecting arcs or self-intersecting curves.
It is possible to create composite regions by combining, subtracting, or finding the intersection of regions. After forming these more complex regions, it is possible to apply hatching or analyze their area.
Objects combined using UNION:
Objects combined using SUBTRACT:
Objects combined using INTERSECT_1MUL:
