| Created: | 23.5.2022 18.05.05 |
| Modified: | 1.8.2022 13.54.05 |
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A GM_ArcString (Figure 17) is similar to a GM_LineString except that the interpolation is by circular arcs. Since it requires 3 points to determine a circular arc, the controlPoints are treated as a sequence of overlapping sets of 3 GM_Positions, the start of each arc, some point between the start and end, and the end of each arc. Since the end of each arc is the start of the next, this GM_Position is not repeated in the controlPoint sequence.<br/>
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Public DirectPosition controlPoints |
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Public DirectPosition dataPoints |
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Public Integer numArc |
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| Operation | ||
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Public angleByArc( arc: Integer,
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Sequential
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Public angleByCenter( center: Integer,
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Sequential
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Public Arc( data: ArcData,
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Sequential <<create>>
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| Tag | Value |
| persistence | persistent |
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| Constraint | Type | Status |
| dataPoint->length=numarc+1 | Invariant | Approved |
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| controlPoint->length=numarc | Invariant | Approved |
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| angleByCente(*)<=360 | Invariant | Approved |
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| angleByArc(*)<180 | Invariant | Approved |
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| Property | Value |
| isFinalSpecialization: | 0 |
| Object | Type | Connection | Direction | Notes |
| Conic | Interface | Generalization | To | |
| Circle | Interface | Generalization | From | |
| «datatype» ArcData | DataType | Dependency | To |