1# -*- coding: utf-8 -*- 

2from math import ceil 

3 

4from qgis.core import * 

5from qgis.gui import * 

6from PyQt5.QtWidgets import * 

7 

8def get_point_layer(map_layer, canvas): 

9 

10 xmin, ymin, xmax, ymax = map_layer.extent().toRectF().getCoords() 

11 crs = map_layer.crs().toWkt() 

12 point_layer = QgsVectorLayer('Polygon?crs=' + crs, 'grid_line', 'memory') 

13 point_provider = point_layer.dataProvider() 

14 

15 gridWidth =map_layer.rasterUnitsPerPixelX() #2017.11.1 원영진 수정 

16 gridHeight = map_layer.rasterUnitsPerPixelY() #2017.11.1 원영진 수정 

17 

18 rows = ceil((ymax-ymin)/gridHeight) 

19 cols = ceil((xmax-xmin)/gridWidth) 

20 ringXleftOrigin = xmin 

21 ringXrightOrigin = xmin + gridWidth 

22 ringYtopOrigin = ymax 

23 ringYbottomOrigin = ymax-gridHeight 

24 for i in range(int(cols)): 

25 ringYtop = ringYtopOrigin 

26 ringYbottom =ringYbottomOrigin 

27 for j in range(int(rows)): 

28 poly = [QgsPointXY(ringXleftOrigin, ringYtop),QgsPointXY(ringXrightOrigin, ringYtop),QgsPointXY(ringXrightOrigin, ringYbottom),QgsPointXY(ringXleftOrigin, ringYbottom),QgsPointXY(ringXleftOrigin, ringYtop)] 

29 feat = QgsFeature() 

30 feat.setGeometry(QgsGeometry().fromPolygonXY([poly])) 

31 point_provider.addFeatures([feat]) 

32 point_layer.updateExtents() 

33 

34 ringYtop = ringYtop - gridHeight 

35 ringYbottom = ringYbottom - gridHeight 

36 ringXleftOrigin = ringXleftOrigin + gridWidth 

37 ringXrightOrigin = ringXrightOrigin + gridWidth 

38 

39 

40 myRenderer = point_layer.renderer() 

41 

42 if point_layer.geometryType() == 2: 

43 

44 # 2017-12-07 박 두께 및 색상 변경 

45 properties = {'color': '255,0,0,0','width_border': '0.09' , 'color_border': '0,0,0,127'} 

46 mySymbol1 = QgsFillSymbol.createSimple(properties) 

47 

48 myRenderer.setSymbol(mySymbol1) 

49 point_layer.triggerRepaint() 

50 

51 return point_layer