本文整理汇总了Python中qgis.core.QgsGeometry.shortestLine方法的典型用法代码示例。如果您正苦于以下问题：Python QgsGeometry.shortestLine方法的具体用法？Python QgsGeometry.shortestLine怎么用？Python QgsGeometry.shortestLine使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类qgis.core.QgsGeometry的用法示例。
在下文中一共展示了QgsGeometry.shortestLine方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: traf
# 需要导入模块: from qgis.core import QgsGeometry [as 别名]
# 或者: from qgis.core.QgsGeometry import shortestLine [as 别名]
#.........这里部分代码省略.........
conn.commit()
buf1= QgsGeometry.fromWkt(resultat[0][0])
if m3<m4:
texte="select asText(st_line_substring(st_geomfromtext('"+buf.asWkt()+"',"+proj+")"+','+str(m3)+','+str(m4)+"))"
rs = c.execute(texte)
resultat=c.fetchall()
conn.commit()
buf2= QgsGeometry.fromWkt(resultat[0][0])
else:
texte="select astext(st_union(g)) from (select st_line_substring(st_geomfromtext('"+buf.asWkt()+"',"+proj+"),0,"+str(m4)+") as \"g\" union all select st_line_substring(st_geomfromtext('"+buf.asWkt()+"',"+proj+"),"+str(m3)+",1) as \"g\" )"
rs = c.execute(texte)
resultat=c.fetchall()
conn.commit()
buf2= QgsGeometry.fromWkt(resultat[0][0])
texte="select astext(st_union(st_snap(st_line_substring(geomfromtext('"+buf.asWkt()+"',"+proj+"),0,"+str(m4)+"),st_line_substring(geomfromtext('"+buf.asWkt()+"',"+proj+"),"+str(m3)+",1),1),st_line_substring(geomfromtext('"+buf.asWkt()+"',"+proj+"),"+str(m3)+",1)))"
rs = c.execute(texte)
resultat=c.fetchall()
conn.commit()
buf2= QgsGeometry.fromWkt(resultat[0][0])
g1=buf
g2=buf.shortestLine(int1)
g2=g2.combine(g1)
g3=buf.shortestLine(int2)
g3=g3.combine(g2)
g3=g3.combine(pt1.shortestLine(int1))
g3=g3.combine(pt2.shortestLine(int2))
g3=g3.combine(pt1.shortestLine(geometry.geometry()))
g3=g3.combine(pt2.shortestLine(geometry.geometry()))
g3=g3.combine(geometry.geometry())
buf3=buf1.asWkt()
buf4=buf2.asWkt()
if double_sens==False:
if m5>0:
texte="select astext(st_union(st_snap(geomfromtext('"+geometry.geometry().asWkt()+"',"+proj+"),geomfromtext('"+pt1.shortestLine(int5).asWkt()+"',"+proj+"),1),geomfromtext('"+pt1.shortestLine(int5).asWkt()+"',"+proj+")))"
rs = c.execute(texte)
resultat=c.fetchall()
conn.commit()
buf3= resultat[0][0]
texte="select astext(st_union(st_snap(geomfromtext('"+buf3+"',"+proj+"),geomfromtext('"+pt2.shortestLine(int5).asWkt()+"',"+proj+"),1),geomfromtext('"+pt2.shortestLine(int5).asWkt()+"',"+proj+")))"
rs = c.execute(texte)
resultat=c.fetchall()
conn.commit()
buf3= resultat[0][0]
else:
texte="select astext(st_union(st_snap(geomfromtext('"+buf3+"',"+proj+"),geomfromtext('"+buf1.shortestLine(int1).asWkt()+"',"+proj+"),1),geomfromtext('"+buf1.shortestLine(int1).asWkt()+"',"+proj+")))"
rs = c.execute(texte)
resultat=c.fetchall()
conn.commit()
buf3= resultat[0][0]
texte="select astext(st_union(st_snap(geomfromtext('"+buf3+"',"+proj+"),geomfromtext('"+buf1.shortestLine(int2).asWkt()+"',"+proj+"),1),geomfromtext('"+buf1.shortestLine(int2).asWkt()+"',"+proj+")))"
rs = c.execute(texte)
resultat=c.fetchall()
conn.commit()