Changes between Version 26 and Version 27 of FDORfc59
- Timestamp:
- Apr 10, 2011, 7:49:32 PM (13 years ago)
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FDORfc59
v26 v27 438 438 439 439 === Class FdoBSplineKnotCollection === 440 440 441 {{{ 441 442 /// \brief … … 644 645 }; 645 646 }}} 647 648 [[BR]] 649 [[BR]] 646 650 647 651 == FGF Text Definitions == … … 747 751 )) 748 752 }}} 753 754 [[BR]] 755 [[BR]] 749 756 750 757 == FGF Binary Definitions == … … 842 849 }}} 843 850 851 [[BR]] 852 [[BR]] 844 853 845 854 == !GeometryFactory Examples == … … 1025 1034 ||XYZM||ZM|| 1026 1035 1036 [[BR]] 1037 [[BR]] 1027 1038 1028 1039 == OGC WKB vs FGF WKB == … … 1256 1267 == Appendix B: Questions and Answers == 1257 1268 1258 == ICircleSegment vs. ICircle==1259 1260 === Question:===1269 === ICircleSegment vs. ICircle === 1270 1271 ==== Question: ==== 1261 1272 1262 1273 What if we change the proposal to derive FdoICircleSegment directly from FdoICurveAbstract, in the process renaming FdoICircleSegment to be FdoICircle. To me, this has some merit, since as currently described, a circle must be closed and cannot be combined with any other !ArcSegment Types to form complex curve strings. They can only stand alone, and wrapping it in a !CurveString seems wasteful. If a user wished to define a non-closed circle, they would use ICircularArcSegment. 1263 1274 1264 === Response:===1275 ==== Response: ==== 1265 1276 1266 1277 The FdoICircle may be something of a hard sell. In OGC, Circle extends Arc, which extends !ArcString, which extends !CurveSegment, which implements !GenericCurve. 1267 1278 1268 == Can ICircularArcSegment Describe a Closed Circle==1269 1270 === Question:===1279 === Can ICircularArcSegment Describe a Closed Circle === 1280 1281 ==== Question: ==== 1271 1282 1272 1283 I’m not sure how !CircularArcSegment can describe a full circle. If the start and end points are identical, then you only have two points (start/end and mid-point), which does not define the plane of the arc for XYZ dimensionality. 1273 1284 1274 === Response:===1285 ==== Response: ==== 1275 1286 1276 1287 For the rest of this explanation, it’s assumed that the circle is complete (start and end are same position).
