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secondo/Algebras/Constraint/Constraint.examples

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2026-01-23 17:03:45 +08:00
Database: testData/constrainttest
Restore : NO
Operator : cunion
Number : 1
Signature: (constraint constraint) -> constraint
Example : query consPolygon1 cunion consPolygon2
Result : file
Operator : cjoin
Number : 1
Signature: (constraint constraint) -> constraint
Example : query consPolygon1 cjoin consPolygon2
Result : file
Operator : cintersection
Number : 1
Signature: (constraint constraint) -> constraint
Example : query consPolygon1 cintersection consLine1
Result : file
Operator : cprojection
Number : 1
Signature: (constraint {x,y}) -> constraint
Example : query cprojection(consPolygon1, x)
Result : file
Operator : cselection
Number : 1
Signature: (constraint real real real {eq, leq}) -> constraint
Example : query cselection(consPolygon1, 1.0, 0.0, -7.0, leq)
Result : file
Operator : csatisfy
Number : 1
Signature: (constraint) -> bool
Example : query csatisfy(consPolygon1)
Result : TRUE
Operator : coverlaps
Number : 1
Signature: (constraint constraint) -> bool
Example : query consPolygon1 coverlaps consPolygon2
Result : TRUE
Operator : no_tuples
Number : 1
Signature: (constraint) -> int
Example : query no_tuples(consPolygon1)
Result : 65
Operator : no_constraints
Number : 1
Signature: (constraint) -> int
Example : query no_constraints(consPolygon1)
Result : 250
Operator : bbox
Number : 1
Signature: (constraint) -> rect
Example : query bbox(consPolygon1)
Result : file
Operator : triangulate
Number : 1
Signature: (stream(region)) -> stream(region)
Example : query spatRegion feed triangulate count
Result : 35
Operator : point2constraint
Number : 1
Signature: (point) -> constraint
Example : query point2constraint(spatPoint)
Result : file
Operator : points2constraint
Number : 1
Signature: (points) -> constraint
Example : query points2constraint(spatPoints)
Result : file
Operator : line2constraint
Number : 1
Signature: (line) -> constraint
Example : query line2constraint(spatLine)
Result : file
Operator : region2constraint
Number : 1
Signature: (region) -> constraint
Example : query region2constraint(spatRegion, TRUE)
Result : file
Operator : region2constraint
Number : 2
Signature: (region) -> constraint
Example : query region2constraint(spatRegion, FALSE)
Result : file
Operator : constraint2point
Number : 1
Signature: (constraint) -> point
Example : query constraint2point(consPoint1)
Result : file
Operator : constraint2points
Number : 1
Signature: (constraint) -> points
Example : query constraint2points(consPoints1)
Result : file
Operator : constraint2line
Number : 1
Signature: (constraint) -> line
Example : query constraint2line(consLine1)
Result : file
Operator : constraint2region
Number : 1
Signature: (stream(constraint)) -> stream(region)
Example : query consPolygon1 feed constraint2region count
Result : 65