Open CASCADE Technology
6.5.4
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The primitive SetOfSegments
Warning: This primitive must be use as possible for performance
improvment but is drawn with a global line attributes
for all the set.
But when the set contains a lot of contigous segments
with a line attrib different to the default,it's
more preferable to use a SetOfPolylines for to insure
a better quality.
NOTE: than the method PickedIndex() permits to known
the last picked segment in the set.
#include <Graphic2d_SetOfSegments.hxx>
Public Member Functions | |
Graphic2d_SetOfSegments (const Handle< Graphic2d_GraphicObject > &aGraphicObject) | |
Creates an empty set of segments in the graphic object <aGraphicObject>. | |
void | Add (const Quantity_Length X1, const Quantity_Length Y1, const Quantity_Length X2, const Quantity_Length Y2) |
Add a segment in the set The first point is <X1>, <Y1>. The second point is <X2>, <Y2>. Trigger: Raises SegmentDefinitionError if the first point and the second point are identical. | |
Standard_Integer | Length () const |
Returns the number of segments in the set. | |
void | Values (const Standard_Integer aRank, Quantity_Length &X1, Quantity_Length &Y1, Quantity_Length &X2, Quantity_Length &Y2) const |
Returns the segment of rank <aRank> from the set. Trigger: Raises OutOfRange if <aRank> is <1 or >Length() | |
virtual void | Save (Aspect_FStream &aFStream) const |
Protected Member Functions | |
void | Draw (const Handle< Graphic2d_Drawer > &aDrawer) |
Draws the set of segments <me>. | |
virtual void | DrawElement (const Handle< Graphic2d_Drawer > &aDrawer, const Standard_Integer anIndex) |
Draws element <anIndex> of the set <me>. | |
virtual void | DrawVertex (const Handle< Graphic2d_Drawer > &aDrawer, const Standard_Integer anIndex) |
Draws vertex <anIndex> of the set <me>. | |
Standard_Boolean | Pick (const Standard_ShortReal X, const Standard_ShortReal Y, const Standard_ShortReal aPrecision, const Handle< Graphic2d_Drawer > &aDrawer) |
Returns Standard_True if one segment of the set <me> is picked, Standard_False if not. Warning: The PickIndex() method returns the rank of the picked segment if any. |
Graphic2d_SetOfSegments::Graphic2d_SetOfSegments | ( | const Handle< Graphic2d_GraphicObject > & | aGraphicObject | ) |
void Graphic2d_SetOfSegments::Add | ( | const Quantity_Length | X1, |
const Quantity_Length | Y1, | ||
const Quantity_Length | X2, | ||
const Quantity_Length | Y2 | ||
) |
void Graphic2d_SetOfSegments::Draw | ( | const Handle< Graphic2d_Drawer > & | aDrawer | ) | [protected, virtual] |
Implements Graphic2d_Primitive.
virtual void Graphic2d_SetOfSegments::DrawElement | ( | const Handle< Graphic2d_Drawer > & | aDrawer, |
const Standard_Integer | anIndex | ||
) | [protected, virtual] |
Reimplemented from Graphic2d_Primitive.
virtual void Graphic2d_SetOfSegments::DrawVertex | ( | const Handle< Graphic2d_Drawer > & | aDrawer, |
const Standard_Integer | anIndex | ||
) | [protected, virtual] |
Reimplemented from Graphic2d_Primitive.
Standard_Boolean Graphic2d_SetOfSegments::Pick | ( | const Standard_ShortReal | X, |
const Standard_ShortReal | Y, | ||
const Standard_ShortReal | aPrecision, | ||
const Handle< Graphic2d_Drawer > & | aDrawer | ||
) | [protected, virtual] |
Implements Graphic2d_Primitive.
virtual void Graphic2d_SetOfSegments::Save | ( | Aspect_FStream & | aFStream | ) | const [virtual] |
Reimplemented from Graphic2d_Line.
void Graphic2d_SetOfSegments::Values | ( | const Standard_Integer | aRank, |
Quantity_Length & | X1, | ||
Quantity_Length & | Y1, | ||
Quantity_Length & | X2, | ||
Quantity_Length & | Y2 | ||
) | const |