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wiki:documentation:devguide:geometry_module [2016/01/19 09:52] gribeiro [Set Operations] |
wiki:documentation:devguide:geometry_module [2016/01/20 10:22] gribeiro [LinearRing] |
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| It is important to notice that this module refers to //**a geometry model to be used in main memory**// and //**it doesn't assume any kind of persistence or data storage management**//. This section explains the basic concepts, design behind this module ad how to use it. | It is important to notice that this module refers to //**a geometry model to be used in main memory**// and //**it doesn't assume any kind of persistence or data storage management**//. This section explains the basic concepts, design behind this module ad how to use it. | ||
| - | All the types offered by Geometry module are in the namespace ''te::gm''. Check the [[http://www.dpi.inpe.br/terralib5/codedocs_5.1.0/d9/dba/group__geometry.html|DOxygen documentation of this module]], where these and other classes are documented in details. | + | All the types offered by Geometry module are in the namespace ''te::gm''. Check the [[http://www.dpi.inpe.br/terralib5/codedocs_5.1.0/d9/dba/group__geometry.html|Doxygen documentation of this module]], where these and other classes are documented in details. |
| ===== General Concepts ===== | ===== General Concepts ===== | ||
| Line 43: | Line 43: | ||
| <code cpp> | <code cpp> | ||
| - | std::unique_ptr<te::gm::Point> p = std::make_unique<te::gm::Point>(-54.0, -12.0, 4326); | + | te::gm::Point p(-54.0, -12.0, 4326); |
| </code> | </code> | ||
| Line 69: | Line 69: | ||
| <code cpp> | <code cpp> | ||
| - | std::unique_ptr<te::gm::LineString> l = std::make_unique<te::gm:: LineString>(2, te::gm::LineStringType); | + | te::gm::LineString l(2, te::gm::LineStringType); |
| - | l->setPoint(0, -54.0, -12.0); | + | l.setPoint(0, -54.0, -12.0); |
| - | l->setPoint(1, -55.0, -13.0); | + | l.setPoint(1, -55.0, -13.0); |
| </code> | </code> | ||
| Line 94: | Line 94: | ||
| <code cpp> | <code cpp> | ||
| - | std::unique_ptr<te::gm::LinearRing> r = std::make_unique<te::gm::LinearRing>(5, te::gm::LineStringType, 0); | + | te::gm::LinearRing r(5, te::gm::LineStringType, 0); |
| - | r->setPoint(0, 1, 2); | + | r.setPoint(0, 1, 2); |
| - | r->setPoint(1, 1, 7); | + | r.setPoint(1, 1, 7); |
| - | r->setPoint(2, 7, 7); | + | r.setPoint(2, 7, 7); |
| - | r->setPoint(3, 7, 2); | + | r.setPoint(3, 7, 2); |
| - | r->setPoint(4, 1, 2); | + | r.setPoint(4, 1, 2); |
| </code> | </code> | ||
| Line 363: | Line 363: | ||
| std::unique_ptr<te::gm::Geometry> result( red->intersection( blue.get() ) ); | std::unique_ptr<te::gm::Geometry> result( red->intersection( blue.get() ) ); | ||
| | | ||
| - | std::cout << resultado->toString() << std::end; | + | std::cout << result->toString() << std::end; |
| </code> | </code> | ||
| Line 384: | Line 384: | ||
| </code> | </code> | ||
| + | **2.** Polygon union: | ||
| + | <code cpp> | ||
| + | std::unique_ptr<te::gm::Geometry> red( te::gm::WKTReader::read("POLYGON ( (2 2, 2 4, 5 4, 5 2, 2 2) )") ); | ||
| + | std::unique_ptr<te::gm::Geometry> blue( te::gm::WKTReader::read("POLYGON ( (4 1, 4 3, 7 3, 7 1, 4 1) )") ); | ||
| + | | ||
| + | std::unique_ptr<te::gm::Geometry> result( red->Union( blue.get() ) ); | ||
| + | | ||
| + | std::cout << result->toString() << std::endl; | ||
| + | </code> | ||
| + | |||
| + | <code cpp> | ||
| + | std::unique_ptr<te::gm::Geometry> red( te::gm::WKTReader::read("POLYGON ( (2 5, 2 7, 5 7, 5 5, 2 5) )") ); | ||
| + | std::unique_ptr<te::gm::Geometry> blue( te::gm::WKTReader::read("POLYGON ( (5 5, 5 7, 8 7, 8 5, 5 5) )") ); | ||
| + | | ||
| + | std::unique_ptr<te::gm::Geometry> result( red->Union( blue.get() ) ); | ||
| + | | ||
| + | std::cout << result->toString() << std::endl; | ||
| + | </code> | ||
| + | |||
| + | <code cpp> | ||
| + | std::unique_ptr<te::gm::Geometry> red( te::gm::WKTReader::read("POLYGON ( (9 2, 9 4, 11 4, 11 2, 9 2) )") ); | ||
| + | std::unique_ptr<te::gm::Geometry> blue( te::gm::WKTReader::read("POLYGON ( (12 1, 12 3, 15 3, 15 1, 12 1) )") ); | ||
| + | | ||
| + | std::unique_ptr<te::gm::Geometry> result( red->Union( blue.get() ) ); | ||
| + | | ||
| + | std::cout << result->toString() << std::endl; | ||
| + | </code> | ||
| ===== Buffer ===== | ===== Buffer ===== | ||
| + | <code cpp> | ||
| + | std::unique_ptr<te::gm::Geometry> poly( te::gm::WKTReader::read("POLYGON ( (6 3, 6 5, 9 5, 9 3, 6 3) )") ); | ||
| + | |||
| + | std::unique_ptr<te::gm::Geometry> result( poly->buffer(2.0) ); | ||
| + | | ||
| + | std::cout << result->toString() << std::endl; | ||
| + | </code> | ||
| ===== Metric Operators ===== | ===== Metric Operators ===== | ||
