沿着多条路径QPainterPath图纸和placering项目(QPainterPath draw

2019-09-26 16:58发布

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我从以前的代码行开发并添加了一些特殊的行为。 我们的想法是绘制矩形形状和圆形形状内部的某一路径上小圆圈的形状和根据预先给定的距离放置。 我想根据用户给定的距离，并自动编程绘图。 即。 距离和数量将有所不同。

我已经看过自己在这项工作，并达成了非常复杂的for循环和长代码行来解决这个问题。 恐怕在这里重复同样的程序。

我想达到的目标：

在矩形形状的情况下，圆的尺寸由下式给出： 

self._rebar = QtCore.QSizeF(yb, yb)

和从顶部测量到圆心每个圆圈的垂直距离由下式给出： 

cb, ct, ys, yb, yt = 25, 25, 8, 12, 12
di, dis = h-cb-ys-yb/2, ct+ys+yt/2
self.db, self.dt = [di, di, di, di-25, di-25, di-25], [dis, dis, dis, dis+25, dis+25]

认为未来的投入将增加或减少的推理少跌多的距离值钢筋的数量。 那我就能够绘制，绘制他们有序，并定期。

输入到圆形形状。 

cb, ys, yb = 25, 8, 12
self.As = [yb, yb, yb, yb, yb, yb, yb]
self._rebar = QtCore.QSizeF(yb, yb)

在圆形的情况下，有没有办法来绘制，并按照圆形路径和地方圈弧角？ 我的意思是，我认为衡量钢筋的第一个数字，并有一段距离，然后用圆弧角和长度将能够放置和整理，以便他们，不管什么圈子项目的数量将成为easist方式！

我明白任何方便和智能的方式来围绕并避免长编码。

说明矩形形状：

为了您的信息，它是这样的，名单self.db = [di, di, di, di+25, di+25, di+25]将传递给函数从另一个类的到来，whic已经计算了多少圈会是在一个层中，即，。 对于exampel， self.db = [200, 200, 180, 180]意味着将只有在一个层2圆和2中的其他层。 所以beff将只包含在第一层2圈。 在这种情况下，需要了解如何将它们放置在秩序和规律。

我纠正这行代码的self.db, self.dt = [di, di, di, di-25, di-25, di-25], [dis, dis, dis, dis+25, dis+25]

图层

编码： 

from PyQt5 import QtCore, QtGui, QtWidgets

class Foo(QtWidgets.QWidget):
    def __init__(self, parent=None):
        super(Foo, self).__init__(parent)
        self.setGeometry(QtCore.QRect(200, 100, 800, 800))

        self.button = Button()
        self.paint = Createpaintwidget()
        self.button.valuesChanged.connect(self.paint.set_size_squares)
        self.button.valueChanged.connect(self.paint.set_size_round)

        self.lay = QtWidgets.QVBoxLayout(self)
        self.lay.addWidget(self.paint)
        self.lay.addWidget(self.button)

class Createpaintwidget(QtWidgets.QWidget):
    def __init__(self):
        super().__init__()
        self.sizeHint()        
        self.setBackgroundRole(QtGui.QPalette.Base)     
        self.setAutoFillBackground(True)

        self._size = QtCore.QSizeF()
        self._path = QtGui.QPainterPath()
        self._rect = QtCore.QRectF()
        self._type = QtGui.QRegion.Rectangle
        self._factor = 1.0

        self._sizeouter = QtCore.QSizeF()
        self._rectouter = QtCore.QRectF()
        self._sizeinner = QtCore.QSizeF()
        self._rectinner = QtCore.QRectF()
        self._rebar = QtCore.QSizeF()
        self._rectrebar = QtCore.QRectF()

        self._pos = QtCore.QPointF()
        self._initial_flag = False
        fnt = self.font() 
        fnt.setPointSize(20) 
        self.setFont(fnt) 

    def showEvent(self, event):
        if not self._initial_flag:
            self._pos = self.rect().center()
            self._initial_flag = True

    @QtCore.pyqtSlot(int, int)
    def set_size_squares(self, w, h):
        cb, ct, ys, yb, yt = 25, 25, 8, 12, 12
        di, dis, ccb, cct = h-cb-ys-yb/2, ct+ys+yt/2, cb+ys+0.5*yb, ct+ys+0.5*yt
        self.db, self.dt = [di, di, di, di-25, di-25, di-25], [dis, dis, dis, dis+25, dis+25]
        beff_b, beff_t = w - 2*ccb, w - 2*cct
        db_d = dict(set((x,self.db.count(x)) for x in filter(lambda rec : self.db.count(rec)>1,self.db)))
        db_l = [k for k in dict.values(db_d)]
        dt_d = dict(set((x,self.dt.count(x)) for x in filter(lambda rec : self.dt.count(rec)>1,self.dt)))
        dt_l = [k for k in dict.values(dt_d)]
        xb, xt = [beff_b/(k-1) for k in db_l], [beff_t/(k-1) for k in dt_l]
        self.dbx, self.dtx = [], []
        start = 0 
        for k, b in enumerate(db_l): 
            sub_A = self.db[start:start+b] 
            start = start+b 
            for i, _ in enumerate(sub_A): 
                self.dbx.append(ccb+i*xb[k])
        start = 0 
        for k, b in enumerate(dt_l): 
            sub_A = self.dt[start:start+b] 
            start = start+b 
            for i, _ in enumerate(sub_A): 
                self.dtx.append(cct+i*xt[k])


        self._path = QtGui.QPainterPath()
        self._size = QtCore.QSizeF(w, h)
        self._sizeouter = QtCore.QSizeF(w-cb, h-ct)
        self._sizeinner = QtCore.QSizeF(w-cb-ys, h-ct-ys)
        self._rebar = QtCore.QSizeF(yb, yb)
        self._type = QtGui.QRegion.Rectangle
        self.updatePath()


    @QtCore.pyqtSlot(int)
    def set_size_round(self, v):
        cb, ys, yb = 25, 8, 12
        self.As = [yb, yb, yb, yb, yb, yb, yb]
        self._path = QtGui.QPainterPath()
        self._size = QtCore.QSizeF(v, v)
        self._sizeouter = QtCore.QSizeF(v-cb, v-cb)
        self._sizeinner = QtCore.QSizeF(v-cb-ys, v-cb-ys)
        self._rebar = QtCore.QSizeF(yb, yb)
        self._type = QtGui.QRegion.Ellipse
        self.updatePath()

    def paintEvent(self, event):
        pen = QtGui.QPen()
        brush = QtGui.QBrush(QtCore.Qt.black)
        painter = QtGui.QPainter(self)
        painter.setRenderHint(QtGui.QPainter.Antialiasing)
        painter.setPen(pen)
        painter.setBrush(brush)

        painter.translate(self.rect().center())
        painter.scale(self._factor, self._factor)
        painter.translate(-self.rect().center())

        painter.translate(self._pos)
        painter.drawPath(self._path)



        S = (self._rectouter.size() + self._rectinner.size())/2
        s = (self._rectouter.size() - self._rectinner.size())/2
        r = QtCore.QRectF(QtCore.QPointF(), S)
        r.moveCenter(self._rectouter.center())
        path = QtGui.QPainterPath()
        painter.setBrush(QtGui.QBrush(QtCore.Qt.gray, QtCore.Qt.Dense7Pattern))

        if self._type == QtGui.QRegion.Rectangle:
            painter.drawRect(self._rect)
            path.addRoundedRect(r, 10, 10)

            painter.setBrush(QtGui.QBrush(QtCore.Qt.cyan, QtCore.Qt.SolidPattern))
            painter.drawEllipse(self._rectrebar)

        elif self._type == QtGui.QRegion.Ellipse:
            painter.drawEllipse(self._rect)
            path.addEllipse(r)

            painter.setBrush(QtGui.QBrush(QtCore.Qt.cyan, QtCore.Qt.SolidPattern))
            painter.drawEllipse(self._rectrebar)

        stroker = QtGui.QPainterPathStroker()
        stroker.setWidth(s.width())
        stroke_path = stroker.createStroke(path)
        painter.setBrush(QtGui.QBrush(QtCore.Qt.cyan, QtCore.Qt.SolidPattern))
        painter.drawPath(stroke_path)

    def mousePressEvent(self, event):
        QtWidgets.QApplication.setOverrideCursor(QtGui.QCursor(QtCore.Qt.OpenHandCursor))
        self._initial_pos = event.pos()
        super().mousePressEvent(event)

    def mouseMoveEvent(self, event):
        delta = event.pos() - self._initial_pos
        self._path.translate(delta)
        self._rect.translate(delta)
        self._rectinner.translate(delta)
        self._rectouter.translate(delta)
        self._rectrebar.translate(delta)
        self.update()
        self._initial_pos = event.pos()
        super().mouseMoveEvent(event)

    def mouseReleaseEvent(self, event):
        QtWidgets.QApplication.restoreOverrideCursor()
        super().mouseReleaseEvent(event)

    def updatePath(self):
        r = QtCore.QRectF(QtCore.QPointF(), self._size)
        ro = QtCore.QRectF(QtCore.QPointF(), self._sizeouter)
        ri = QtCore.QRectF(QtCore.QPointF(), self._sizeinner)
        rr = QtCore.QRectF(QtCore.QPointF(), self._rebar)
        r.moveCenter(QtCore.QPointF())
        ro.moveCenter(QtCore.QPointF())
        ri.moveCenter(QtCore.QPointF())
        rr.moveCenter(QtCore.QPointF())

        self._rectouter = QtCore.QRectF(ro)
        self._rectinner = QtCore.QRectF(ri)
        self._rect = QtCore.QRectF(r)
        self._rectrebar = QtCore.QRectF(rr)     
        self.update()

    def wheelEvent(self, event):
        self._factor *= 1.01**(event.angleDelta().y()/15.0)
        self.update()
        super().wheelEvent(event)

class Button(QtWidgets.QWidget):
    valueChanged = QtCore.pyqtSignal(int)
    valuesChanged = QtCore.pyqtSignal(int,int)
    def __init__(self, parent=None):
        super(Button, self).__init__(parent)
        roundbutton = QtWidgets.QPushButton('Round')
        squarebutton = QtWidgets.QPushButton('Square')
        Alay = QtWidgets.QVBoxLayout(self)
        Alay.addWidget(roundbutton)
        Alay.addWidget(squarebutton)
        self.value = QtWidgets.QLabel()
        roundbutton.clicked.connect(self.getbuttonfunc)
        squarebutton.clicked.connect(self.sqaurebuttonfunc)

    @QtCore.pyqtSlot()
    def getbuttonfunc(self):
        number, ok = QtWidgets.QInputDialog.getInt(self, self.tr("Set Number"),
                                         self.tr("Input:"), 1, 1)
        if ok:
            self.valueChanged.emit(number)

    @QtCore.pyqtSlot()
    def sqaurebuttonfunc(self):
        number, ok = QtWidgets.QInputDialog.getInt(self, self.tr("Set Number"),
                                         self.tr("Input:"), 1, 1)
        if ok:
            self.valuesChanged.emit(number, number)


if __name__ == '__main__':
    import sys
    app = QtWidgets.QApplication(sys.argv)
    w = Foo()
    w.show()
    sys.exit(app.exec_())

更新代码： 

@QtCore.pyqtSlot(int, int)
def set_size_squares(self, w, h):
    cb, ct, ys, yb, yt = 25, 25, 8, 12, 12
    di, dis, ccb, cct = h-cb-ys-yb/2, ct+ys+yt/2, cb+ys+0.5*yb, ct+ys+0.5*yt
    self.db, self.dt = [di, di, di, di-25, di-25, di-25], [dis, dis, dis, dis+25, dis+25]
    beff_b, beff_t = w - 2*ccb, w - 2*cct
    db_d = dict(set((x,self.db.count(x)) for x in filter(lambda rec : self.db.count(rec)>1,self.db)))
    db_l = [k for k in dict.values(db_d)]
    dt_d = dict(set((x,self.dt.count(x)) for x in filter(lambda rec : self.dt.count(rec)>1,self.dt)))
    dt_l = [k for k in dict.values(dt_d)]
    xb, xt = [beff_b/(k-1) for k in db_l], [beff_t/(k-1) for k in dt_l]
    self.dbx, self.dtx = [], []
    start = 0 
    for k, b in enumerate(db_l): 
        sub_A = self.db[start:start+b] 
        start = start+b 
        for i, _ in enumerate(sub_A): 
            self.dbx.append(ccb+i*xb[k])
    start = 0 
    for k, b in enumerate(dt_l): 
        sub_A = self.dt[start:start+b] 
        start = start+b 
        for i, _ in enumerate(sub_A): 
            self.dtx.append(cct+i*xt[k])

                  ----------

该y坐标为底界和对应的x坐标列表中给出： 

self.dbx = [x2,x3,x1,x5,x6,x4]
self.db = [y2, y3, y1, y5, y6, y4]

该y坐标顶圆和对应的x坐标列表中给出： 

self.dtx = [x2,x3,x1,x5,x4]
self.dt = [y2, y3, y1, y5, y4]

Answer 1:

考虑到你所提供和那些关于矩形的左上结果是以下职位的名单： 

import math
from PyQt5 import QtCore, QtGui, QtWidgets

class Foo(QtWidgets.QWidget):
    def __init__(self, parent=None):
        super(Foo, self).__init__(parent)
        self.setGeometry(QtCore.QRect(200, 100, 800, 800))

        self.button = Button()
        self.paint = Createpaintwidget()
        self.button.valuesChanged.connect(self.paint.set_size_squares)
        self.button.valueChanged.connect(self.paint.set_size_round)

        self.lay = QtWidgets.QVBoxLayout(self)
        self.lay.addWidget(self.paint)
        self.lay.addWidget(self.button)

class Createpaintwidget(QtWidgets.QWidget):
    def __init__(self):
        super().__init__()
        self.sizeHint()        
        self.setBackgroundRole(QtGui.QPalette.Base)     
        self.setAutoFillBackground(True)

        self._size = QtCore.QSizeF()
        self._path = QtGui.QPainterPath()
        self._rect = QtCore.QRectF()
        self._type  = None
        self._factor = 1.0

        self._sizeouter = QtCore.QSizeF()
        self._rectouter = QtCore.QRectF()
        self._sizeinner = QtCore.QSizeF()
        self._rectinner = QtCore.QRectF()
        self._rebar = QtCore.QSizeF()
        self._rectrebar = QtCore.QRectF()

        self._pos = QtCore.QPointF()
        self._initial_flag = False
        fnt = self.font() 
        fnt.setPointSize(20) 
        self.setFont(fnt) 

    def showEvent(self, event):
        if not self._initial_flag:
            self._pos = self.rect().center()
            self._initial_flag = True

    @QtCore.pyqtSlot(int, int)
    def set_size_squares(self, w, h):
        cb, ct, ys, yb, yt = 25, 25, 8, 12, 12
        di, dis, ccb, cct = h-cb-ys-yb/2, ct+ys+yt/2, cb+ys+0.5*yb, ct+ys+0.5*yt
        self.db, self.dt = [di, di, di, di-25, di-25, di-25], [dis, dis, dis, dis+25, dis+25]
        beff_b, beff_t = w - 2*ccb, w - 2*cct
        db_d = dict(set((x,self.db.count(x)) for x in filter(lambda rec : self.db.count(rec)>1,self.db)))
        db_l = [k for k in dict.values(db_d)]
        dt_d = dict(set((x,self.dt.count(x)) for x in filter(lambda rec : self.dt.count(rec)>1,self.dt)))
        dt_l = [k for k in dict.values(dt_d)]
        xb, xt = [beff_b/(k-1) for k in db_l], [beff_t/(k-1) for k in dt_l]
        self.dbx, self.dtx = [], []
        start = 0 
        for k, b in enumerate(db_l): 
            sub_A = self.db[start:start+b] 
            start = start+b 
            for i, _ in enumerate(sub_A): 
                self.dbx.append(ccb+i*xb[k])
        start = 0 
        for k, b in enumerate(dt_l): 
            sub_A = self.dt[start:start+b] 
            start = start+b 
            for i, _ in enumerate(sub_A): 
                self.dtx.append(cct+i*xt[k])

        self._path = QtGui.QPainterPath()
        self._size = QtCore.QSizeF(w, h)
        self._sizeouter = QtCore.QSizeF(w-cb, h-ct)
        self._sizeinner = QtCore.QSizeF(w-cb-ys, h-ct-ys)
        self._rebar = QtCore.QSizeF(yb, yb)
        self._type = QtGui.QRegion.Rectangle
        self.updatePath()


    @QtCore.pyqtSlot(int)
    def set_size_round(self, v):
        cb, ys, yb = 25, 8, 12
        self.As = [yb, yb, yb, yb, yb, yb, yb]
        self._path = QtGui.QPainterPath()
        self._size = QtCore.QSizeF(v, v)
        self._sizeouter = QtCore.QSizeF(v-cb, v-cb)
        self._sizeinner = QtCore.QSizeF(v-cb-ys, v-cb-ys)
        self._rebar = QtCore.QSizeF(yb, yb)
        self._type = QtGui.QRegion.Ellipse
        self.updatePath()

    def paintEvent(self, event):
        pen = QtGui.QPen()
        brush = QtGui.QBrush(QtCore.Qt.black)
        painter = QtGui.QPainter(self)
        painter.setRenderHint(QtGui.QPainter.Antialiasing)
        painter.setPen(pen)
        painter.setBrush(brush)

        painter.translate(self.rect().center())
        painter.scale(self._factor, self._factor)
        painter.translate(-self.rect().center())

        painter.translate(self._pos)
        painter.drawPath(self._path)



        S = (self._rectouter.size() + self._rectinner.size())/2
        s = (self._rectouter.size() - self._rectinner.size())/2
        r = QtCore.QRectF(QtCore.QPointF(), S)
        r.moveCenter(self._rectouter.center())
        path = QtGui.QPainterPath()
        painter.setBrush(QtGui.QBrush(QtCore.Qt.gray, QtCore.Qt.Dense7Pattern))

        if self._type == QtGui.QRegion.Rectangle:
            painter.drawRect(self._rect)
            path.addRoundedRect(r, 10, 10)
            _r = QtCore.QRectF(self._rectrebar)
            for x, y in zip(self.dtx + self.dbx , self.dt + self.db):
                _r.moveCenter(QtCore.QPointF(x, y) + self._rect.topLeft())
                painter.setBrush(QtGui.QBrush(QtCore.Qt.cyan, QtCore.Qt.SolidPattern))
                painter.drawEllipse(_r)

        elif self._type == QtGui.QRegion.Ellipse:
            painter.drawEllipse(self._rect)
            path.addEllipse(r)
            painter.setBrush(QtGui.QBrush(QtCore.Qt.cyan, QtCore.Qt.SolidPattern))
            n = 7
            for i, _ in enumerate(self.As):
                angle = (i*2.0/n + 1)*math.pi
                radius = .5 *(r.width() - s.width() - self._rectrebar.width())
                dx = radius*QtCore.QPointF(math.cos(angle), math.sin(angle))
                r_ = QtCore.QRectF(self._rectrebar)
                r_.translate(dx)
                painter.drawEllipse(r_)

        stroker = QtGui.QPainterPathStroker()
        stroker.setWidth(s.width())
        stroke_path = stroker.createStroke(path)
        painter.setBrush(QtGui.QBrush(QtCore.Qt.cyan, QtCore.Qt.SolidPattern))
        painter.drawPath(stroke_path)

    def mousePressEvent(self, event):
        QtWidgets.QApplication.setOverrideCursor(QtGui.QCursor(QtCore.Qt.OpenHandCursor))
        self._initial_pos = event.pos()
        super().mousePressEvent(event)

    def mouseMoveEvent(self, event):
        delta = event.pos() - self._initial_pos
        self._path.translate(delta)
        self._rect.translate(delta)
        self._rectinner.translate(delta)
        self._rectouter.translate(delta)
        self._rectrebar.translate(delta)
        self.update()
        self._initial_pos = event.pos()
        super().mouseMoveEvent(event)

    def mouseReleaseEvent(self, event):
        QtWidgets.QApplication.restoreOverrideCursor()
        super().mouseReleaseEvent(event)

    def updatePath(self):
        r = QtCore.QRectF(QtCore.QPointF(), self._size)
        ro = QtCore.QRectF(QtCore.QPointF(), self._sizeouter)
        ri = QtCore.QRectF(QtCore.QPointF(), self._sizeinner)
        rr = QtCore.QRectF(QtCore.QPointF(), self._rebar)
        r.moveCenter(QtCore.QPointF())
        ro.moveCenter(QtCore.QPointF())
        ri.moveCenter(QtCore.QPointF())
        rr.moveCenter(QtCore.QPointF())

        self._rectouter = QtCore.QRectF(ro)
        self._rectinner = QtCore.QRectF(ri)
        self._rect = QtCore.QRectF(r)
        self._rectrebar = QtCore.QRectF(rr)     
        self.update()

    def wheelEvent(self, event):
        self._factor *= 1.01**(event.angleDelta().y()/15.0)
        self.update()
        super().wheelEvent(event)

class Button(QtWidgets.QWidget):
    valueChanged = QtCore.pyqtSignal(int)
    valuesChanged = QtCore.pyqtSignal(int,int)
    def __init__(self, parent=None):
        super(Button, self).__init__(parent)
        roundbutton = QtWidgets.QPushButton('Round')
        squarebutton = QtWidgets.QPushButton('Square')
        Alay = QtWidgets.QVBoxLayout(self)
        Alay.addWidget(roundbutton)
        Alay.addWidget(squarebutton)
        self.value = QtWidgets.QLabel()
        roundbutton.clicked.connect(self.getbuttonfunc)
        squarebutton.clicked.connect(self.sqaurebuttonfunc)

    @QtCore.pyqtSlot()
    def getbuttonfunc(self):
        number, ok = QtWidgets.QInputDialog.getInt(self, self.tr("Set Number"),
                                         self.tr("Input:"), 1, 1)
        if ok:
            self.valueChanged.emit(number)

    @QtCore.pyqtSlot()
    def sqaurebuttonfunc(self):
        number, ok = QtWidgets.QInputDialog.getInt(self, self.tr("Set Number"),
                                         self.tr("Input:"), 1, 1)
        if ok:
            self.valuesChanged.emit(number, number)


if __name__ == '__main__':
    import sys
    app = QtWidgets.QApplication(sys.argv)
    w = Foo()
    w.show()
    sys.exit(app.exec_())



文章来源: QPainterPath drawing and placering items along multiple paths
标签： python pyqt pyqt5 qpainter qpainterpath
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