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#!/usr/bin/env python3
import xasy2asy as x2a
import xasyUtils as xu
import PyQt5.QtCore as Qc
import PyQt5.QtGui as Qg
import PyQt5.QtWidgets as Qw
import Widg_editBezier as Web
import InplaceAddObj
import math
class CurrentlySelctedType:
none = -1
node = 0
ctrlPoint = 1
class InteractiveBezierEditor(InplaceAddObj.InplaceObjProcess):
editAccepted = Qc.pyqtSignal()
editRejected = Qc.pyqtSignal()
def __init__(self, parent: Qc.QObject, obj: x2a.xasyDrawnItem, info: dict={}):
super().__init__(parent)
self.info = info
self.asyPathBackup = x2a.asyPath.fromPath(obj.path)
self.asyPath = obj.path
self.curveMode = self.asyPath.containsCurve
assert isinstance(self.asyPath, x2a.asyPath)
self.transf = obj.transfKeymap[obj.transfKey][0]
self._active = True
self.currentSelMode = None
# (Node index, Node subindex for )
self.currentSelIndex = (None, 0)
self.nodeSelRects = []
self.ctrlSelRects = []
self.setSelectionBoundaries()
self.lastSelPoint = None
self.preCtrlOffset = None
self.postCtrlOffset = None
self.inTransformMode = False
self.opt = None
self.prosectiveNodes = []
self.prospectiveCtrlPts = []
def setSelectionBoundaries(self):
self.nodeSelRects = self.handleNodeSelectionBounds()
if self.curveMode:
self.ctrlSelRects = self.handleCtrlSelectionBoundaries()
def handleNodeSelectionBounds(self):
nodeSelectionBoundaries = []
for node in self.asyPath.nodeSet:
if node == 'cycle':
nodeSelectionBoundaries.append(None)
continue
selEpsilon = 6/self.info['magnification']
newRect = Qc.QRect(0, 0, 2 * selEpsilon, 2 * selEpsilon)
x, y = self.transf * node
x = int(round(x))
y = int(round(y))
newRect.moveCenter(Qc.QPoint(x, y))
nodeSelectionBoundaries.append(newRect)
return nodeSelectionBoundaries
def handleCtrlSelectionBoundaries(self):
ctrlPointSelBoundaries = []
for nodes in self.asyPath.controlSet:
nodea, nodeb = nodes
selEpsilon = 6/self.info['magnification']
newRect = Qc.QRect(0, 0, 2 * selEpsilon, 2 * selEpsilon)
newRectb = Qc.QRect(0, 0, 2 * selEpsilon, 2 * selEpsilon)
x, y = self.transf * nodea
x2, y2 = self.transf * nodeb
x = int(round(x))
y = int(round(y))
x2 = int(round(x2))
y2 = int(round(y2))
newRect.moveCenter(Qc.QPoint(x, y))
newRectb.moveCenter(Qc.QPoint(x2, y2))
ctrlPointSelBoundaries.append((newRect, newRectb))
return ctrlPointSelBoundaries
def postDrawPreview(self, canvas: Qg.QPainter):
assert canvas.isActive()
dashedPen = Qg.QPen(Qc.Qt.DashLine)
dashedPen.setWidthF(1/self.info['magnification'])
# draw the base points
canvas.save()
canvas.setWorldTransform(self.transf.toQTransform(), True)
epsilonSize = 6/self.info['magnification']
if self.info['autoRecompute'] or not self.curveMode:
ctrlPtsColor = 'gray'
else:
ctrlPtsColor = 'red'
canvas.setPen(dashedPen)
canvas.drawPath(self.asyPath.toQPainterPath())
nodePen = Qg.QPen(Qg.QColor('blue'))
nodePen.setWidthF(1/self.info['magnification'])
ctlPtsPen = Qg.QPen(Qg.QColor(ctrlPtsColor))
ctlPtsPen.setWidthF(1/self.info['magnification'])
for index in range(len(self.asyPath.nodeSet)):
point = self.asyPath.nodeSet[index]
if point != 'cycle':
basePoint = Qc.QPointF(point[0], point[1])
canvas.setPen(nodePen)
canvas.drawEllipse(basePoint, epsilonSize, epsilonSize)
else:
point = self.asyPath.nodeSet[0]
basePoint = Qc.QPointF(point[0], point[1])
if self.curveMode:
if index != 0:
canvas.setPen(ctlPtsPen)
postCtrolSet = self.asyPath.controlSet[index - 1][1]
postCtrlPoint = Qc.QPointF(postCtrolSet[0], postCtrolSet[1])
canvas.drawEllipse(postCtrlPoint, epsilonSize, epsilonSize)
canvas.setPen(dashedPen)
canvas.drawLine(basePoint, postCtrlPoint)
if index != len(self.asyPath.nodeSet) - 1:
canvas.setPen(ctlPtsPen)
preCtrlSet = self.asyPath.controlSet[index][0]
preCtrlPoint = Qc.QPointF(preCtrlSet[0], preCtrlSet[1])
canvas.drawEllipse(preCtrlPoint, epsilonSize, epsilonSize)
canvas.setPen(dashedPen)
canvas.drawLine(basePoint, preCtrlPoint)
canvas.restore()
def getPreAndPostCtrlPts(self, index):
isCycle = self.asyPath.nodeSet[-1] == 'cycle'
if index == 0 and not isCycle:
preCtrl = None
else:
preCtrl = self.asyPath.controlSet[index - 1][1]
if index == len(self.asyPath.nodeSet) - 1 and not isCycle:
postCtrl = None
else:
postCtrl = self.asyPath.controlSet[index % (len(self.asyPath.nodeSet) - 1)][0]
return preCtrl, postCtrl
def findLinkingNode(self, index, subindex):
"""index and subindex are of the control points list."""
if subindex == 0:
return index
else:
if self.asyPath.nodeSet[index + 1] == 'cycle':
return 0
else:
return index + 1
def resetObj(self):
self.asyPath.setInfo(self.asyPathBackup)
self.setSelectionBoundaries()
def mouseDown(self, pos, info, mouseEvent: Qg.QMouseEvent=None):
self.lastSelPoint = pos
if self.inTransformMode:
return
if self.prosectiveNodes and not self.inTransformMode:
self.currentSelMode = CurrentlySelctedType.node
self.currentSelIndex = (self.prosectiveNodes[0], 0)
self.inTransformMode = True
self.parentNodeIndex = self.currentSelIndex[0]
elif self.prospectiveCtrlPts and not self.inTransformMode:
self.currentSelMode = CurrentlySelctedType.ctrlPoint
self.currentSelIndex = self.prospectiveCtrlPts[0]
self.inTransformMode = True
self.parentNodeIndex = self.findLinkingNode(*self.currentSelIndex)
if self.inTransformMode:
parentNode = self.asyPath.nodeSet[self.parentNodeIndex]
# find the offset of each control point to the node
if not self.curveMode:
return
preCtrl, postCtrl = self.getPreAndPostCtrlPts(self.parentNodeIndex)
if parentNode == 'cycle':
parentNode = self.asyPath.nodeSet[0]
self.parentNodeIndex = 0
if preCtrl is not None:
self.preCtrlOffset = xu.funcOnList(
preCtrl, parentNode, lambda a, b: a - b)
else:
self.preCtrlOffset = None
if postCtrl is not None:
self.postCtrlOffset = xu.funcOnList(
postCtrl, parentNode, lambda a, b: a - b)
else:
self.postCtrlOffset = None
def mouseMove(self, pos, event: Qg.QMouseEvent):
if self.currentSelMode is None and not self.inTransformMode:
# in this case, search for prosective nodes.
prospectiveNodes = []
prospectiveCtrlpts = []
for i in range(len(self.nodeSelRects)):
rect = self.nodeSelRects[i]
if rect is None:
continue
if rect.contains(pos):
prospectiveNodes.append(i)
self.prosectiveNodes = prospectiveNodes
if not self.info['autoRecompute'] and self.curveMode:
for i in range(len(self.ctrlSelRects)):
recta, rectb = self.ctrlSelRects[i]
if recta.contains(pos):
prospectiveCtrlpts.append((i, 0))
if rectb.contains(pos):
prospectiveCtrlpts.append((i, 1))
self.prospectiveCtrlPts = prospectiveCtrlpts
else:
self.prospectiveCtrlPts = []
if self.inTransformMode:
index, subindex = self.currentSelIndex
deltaPos = pos - self.lastSelPoint
newNode = (pos.x(), pos.y())
if self.currentSelMode == CurrentlySelctedType.node:
# static throughout the moving
if self.asyPath.nodeSet[index] == 'cycle':
return
self.asyPath.setNode(index, newNode)
# if also move node:
if self.curveMode:
checkPre, checkPost = self.getPreAndPostCtrlPts(index)
if 1 == 1: # TODO: Replace this with an option to also move control pts.
if checkPre is not None:
self.asyPath.controlSet[index - 1][1] = xu.funcOnList(
newNode, self.preCtrlOffset, lambda a, b: a + b
)
if checkPost is not None:
self.asyPath.controlSet[index][0] = xu.funcOnList(
newNode, self.postCtrlOffset, lambda a, b: a + b
)
if self.info['autoRecompute']:
self.quickRecalculateCtrls()
elif self.currentSelMode == CurrentlySelctedType.ctrlPoint and self.curveMode:
self.asyPath.controlSet[index][subindex] = newNode
parentNode = self.asyPath.nodeSet[self.parentNodeIndex]
if parentNode == 'cycle':
parentNode = self.asyPath.nodeSet[0]
isCycle = True
else:
isCycle = False
if self.parentNodeIndex == 0 and self.asyPath.nodeSet[-1] == 'cycle':
isCycle = True
rawNewNode = xu.funcOnList(newNode, parentNode, lambda a, b: a - b)
rawAngle = math.atan2(rawNewNode[1], rawNewNode[0])
newNorm = xu.twonorm(rawNewNode)
if self.info['editBezierlockMode'] >= Web.LockMode.angleLock:
otherIndex = 1 - subindex # 1 if 0, 0 otherwise.
if otherIndex == 0:
if index < (len(self.asyPath.controlSet) - 1) or isCycle:
newIndex = 0 if isCycle else index + 1
oldOtherCtrlPnt = xu.funcOnList(
self.asyPath.controlSet[newIndex][0], parentNode, lambda a, b: a - b)
if self.info['editBezierlockMode'] >= Web.LockMode.angleAndScaleLock:
rawNorm = newNorm
else:
rawNorm = xu.twonorm(oldOtherCtrlPnt)
newPnt = (rawNorm * math.cos(rawAngle + math.pi),
rawNorm * math.sin(rawAngle + math.pi))
self.asyPath.controlSet[newIndex][0] = xu.funcOnList(
newPnt, parentNode, lambda a, b: a + b)
else:
if index > 0 or isCycle:
newIndex = -1 if isCycle else index - 1
oldOtherCtrlPnt = xu.funcOnList(
self.asyPath.controlSet[newIndex][1], parentNode, lambda a, b: a - b)
if self.info['editBezierlockMode'] >= Web.LockMode.angleAndScaleLock:
rawNorm = newNorm
else:
rawNorm = xu.twonorm(oldOtherCtrlPnt)
newPnt = (rawNorm * math.cos(rawAngle + math.pi),
rawNorm * math.sin(rawAngle + math.pi))
self.asyPath.controlSet[newIndex][1] = xu.funcOnList(
newPnt, parentNode, lambda a, b: a + b)
def recalculateCtrls(self):
self.quickRecalculateCtrls()
self.setSelectionBoundaries()
def quickRecalculateCtrls(self):
self.asyPath.controlSet.clear()
self.asyPath.computeControls()
def mouseRelease(self):
if self.inTransformMode:
self.inTransformMode = False
self.currentSelMode = None
self.setSelectionBoundaries()
def forceFinalize(self):
self.objectUpdated.emit()
def createOptWidget(self, info):
self.opt = Web.Widg_editBezier(self.info, self.curveMode)
self.opt.ui.btnOk.clicked.connect(self.editAccepted)
self.opt.ui.btnCancel.clicked.connect(self.editRejected)
self.opt.ui.btnForceRecompute.clicked.connect(self.recalculateCtrls)
return self.opt
def getObject(self):
pass
def getXasyObject(self):
pass
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