TerraLib and TerraView Wiki Page

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
wiki:documentation:devguide:geometry_module [2016/01/20 10:17]
gribeiro [Point]
wiki:documentation:devguide:geometry_module [2016/02/12 10:36] (current)
gribeiro [General Concepts]
Line 14: Line 14:
     * A 1-dimensional geometry is one with a geometric dimension of 1 (one). Curves (lines) are 1-dimensional objects.     * A 1-dimensional geometry is one with a geometric dimension of 1 (one). Curves (lines) are 1-dimensional objects.
     * A 2-dimensional geometry is one with a geometric dimension of 2 (two). Surfaces (polygons) are 2-dimensional objects.     * A 2-dimensional geometry is one with a geometric dimension of 2 (two). Surfaces (polygons) are 2-dimensional objects.
-  * We can have geometries in ℜ2, ℜ3 or ℜ4 coordinate spaces.+  * We can have geometries in ℜ<sup>2</​sup>​, ℜ<sup>3</​sup> ​or ℜ<sup>4</​sup> ​coordinate spaces.
     * The //z// coordinate value not necessarely represents altitude.     * The //z// coordinate value not necessarely represents altitude.
     * The //m// coordinate value represents arbitrary measurement.     * The //m// coordinate value represents arbitrary measurement.
   * The term //ring// is applied to a closed curve (the first and last points are coincident).   * The term //ring// is applied to a closed curve (the first and last points are coincident).
- 
 ===== Geometry Class Hierarchy ===== ===== Geometry Class Hierarchy =====
  
Line 69: Line 68:
  
 <code cpp> <code cpp>
-std::​unique_ptr<​te::​gm::​LineString= 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 93:
  
 <code cpp> <code cpp>
-std::​unique_ptr<​te::​gm::​LinearRing= 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>​