QGIS API Documentation
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src
core
geometry
qgsvertexid.cpp
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/***************************************************************************
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qgsvertexid.cpp
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-------------------------------------------------------------------
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Date : 04 Sept 2014
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Copyright : (C) 2014 by Marco Hugentobler
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email : marco.hugentobler at sourcepole dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include "
qgsvertexid.h
"
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#include "
qgsabstractgeometry.h
"
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bool
QgsVertexId::isValid
(
const
QgsAbstractGeometry
*geom )
const
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{
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return
(
part
>= 0 && part < geom->partCount() ) &&
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(
ring
< geom->
ringCount
(
part
) ) &&
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(
vertex
< 0 || vertex < geom->vertexCount(
part
,
ring
) );
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}
QgsAbstractGeometry
Abstract base class for all geometries.
Definition
qgsabstractgeometry.h:80
QgsAbstractGeometry::ringCount
virtual int ringCount(int part=0) const =0
Returns the number of rings of which this geometry is built.
qgsabstractgeometry.h
qgsvertexid.h
QgsVertexId::vertex
int vertex
Vertex number.
Definition
qgsvertexid.h:94
QgsVertexId::isValid
bool isValid() const
Returns true if the vertex id is valid.
Definition
qgsvertexid.h:45
QgsVertexId::part
int part
Part number.
Definition
qgsvertexid.h:88
QgsVertexId::ring
int ring
Ring number.
Definition
qgsvertexid.h:91
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