개정판 a6dfdec2
QEngineeringLineItem의 Intersect 부분 수정
| DTI_PID/DTI_PID/Shapes/QEngineeringLineItem.py | ||
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| 14 | 14 |
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from QGraphicsPolylineItem import QGraphicsPolylineItem |
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from QGraphicsBoundingBoxItem import QGraphicsBoundingBoxItem |
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import shapely |
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|
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class QEngineeringLineItem(QGraphicsPolylineItem): |
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removed = pyqtSignal(QGraphicsPathItem) |
| ... | ... | |
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@brief get intersection point between this and given line |
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@author humkyung |
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@date 2018.04.21 |
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@history Jeongwoo 2018.05.15 Add normalize |
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''' |
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def intersection(self, line): |
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import math |
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from shapely.geometry import Point, LineString |
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|
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startPt = self.startPoint() |
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endPt = self.endPoint() |
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lhs = LineString([(startPt[0], startPt[1]), (endPt[0], endPt[1])]) |
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dx = endPt[0] - startPt[0] |
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dy = endPt[1] - startPt[1] |
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length = math.sqrt(dx*dx + dy*dy) |
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dx /= length |
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dy /= length |
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lhs = LineString([(startPt[0] - dx*20, startPt[1] - dy*20), (endPt[0] + dx*20, endPt[1] + dy*20)]) |
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rhs = LineString(line) |
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return lhs.intersection(rhs) |
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|
| ... | ... | |
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@brief check if two lines are connectable |
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@author humkyung |
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@date 2018.05.12 |
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@history Jeongwoo 18.05.15 Add check pt's type |
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''' |
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def isConnectable(self, line): |
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import math |
| ... | ... | |
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length = math.sqrt(dx*dx + dy*dy) |
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dx /= length |
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dy /= length |
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extendedLine = [(startPt[0]+dx*20, startPt[1]+dy*20), (endPt[0]-dx*20, endPt[1]-dy*20)]
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extendedLine = [(startPt[0] - dx*20, startPt[1] - dy*20), (endPt[0] + dx*20, endPt[1] + dy*20)]
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pt = self.intersection(extendedLine) |
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return (pt is not None) |
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return (pt is not None) and (type(pt) == shapely.geometry.point.Point)
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''' |
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@brief connect line and symbol is able to be connected and return symbol |
내보내기 Unified diff
