def makePath( pathData, elementAttrs=defaultStyleAttrs):
"""FOR SYMPY: create an lxml path using a PathData object initialized using sympy Point objects and optional elementAttrs dictionary defining node attributes"""
elementAttrs = copy(elementAttrs)
elementAttrs['d'] = pathData.getD()
pathElement = etree.Element('path')
document.setAttributesFromDict(pathElement, elementAttrs)
return pathElement
def buildUse(id, elementAttrs={} ):
"""create a use node (for cloning) with id of node to be cloned (set in its elementAttrs). Use elementAttrs to set transform of object."""
elementAttrs = copy(elementAttrs)
useElement = etree.Element('use')
elementAttrs["{http://www.w3.org/1999/xlink}href"] = '#'+str(id)
document.setAttributesFromDict(useElement, elementAttrs)
return useElement
def buildPath( pathData, elementAttrs=defaultStyleAttrs):
"""create an lxml path using a PathData object and optional elementAttrs dictionary defining node attributes"""
elementAttrs = copy(elementAttrs)
elementAttrs['d'] = str(pathData)
pathElement = etree.Element('path')
document.setAttributesFromDict(pathElement, elementAttrs)
return pathElement
def buildText( text, elementAttrs=defaultTextStyleAttrs):
"""create a text node with given text and optional elementAttrs dictionary defining node attributes"""
elementAttrs = copy(elementAttrs)
textElement = etree.Element('text')
document.setAttributesFromDict(textElement, elementAttrs)
textElement.text = text
return textElement
def makeCircle(circle, elementAttrs=defaultStyleAttrs):
"""FOR SYMPY: create an lxml circle element from sympy Circle with optional elementAttrs dictionary defining node attributes"""
elementAttrs = copy(elementAttrs)
elementAttrs['cx'] = aNum(circle.center.x)
elementAttrs['cy'] = aNum(circle.center.y)
elementAttrs['r'] = aNum(circle.radius)
circleElement = etree.Element('circle')
document.setAttributesFromDict(circleElement, elementAttrs)
return circleElement
def buildCircle(point,radius, elementAttrs=defaultStyleAttrs):
"""create an lxml circle element centered at point with given radius and optional elementAttrs dictionary defining node attributes"""
elementAttrs = copy(elementAttrs)
elementAttrs['cx'] = aNum(point.x)
elementAttrs['cy'] = aNum(point.y)
elementAttrs['r'] = aNum(radius)
circleElement = etree.Element('circle')
document.setAttributesFromDict(circleElement, elementAttrs)
return circleElement
def buildRect(pointA, height, width, elementAttrs=defaultStyleAttrs):
"""create an lxml rectangle element with bottom left corner pointA, and given width/height, with optional elementAttrs dictionary defining node attributes"""
elementAttrs = copy(elementAttrs)
elementAttrs['x'] = aNum(pointA.x)
elementAttrs['y'] = aNum(pointA.y)
elementAttrs['height'] = aNum(height)
elementAttrs['width'] = aNum(width)
rectElement = etree.Element('rect')
document.setAttributesFromDict(rectElement, elementAttrs)
return rectElement
def makeLine(line,elementAttrs=defaultStyleAttrs):
"""FOR SYMPY: create an lxml line element from sympy Line with optional elementAttrs dictionary defining node attributes"""
elementAttrs = copy(elementAttrs)
elementAttrs['x1'] = aNum(line.p1.x)
elementAttrs['y1'] = aNum(line.p1.y)
elementAttrs['x2'] = aNum(line.p2.x)
elementAttrs['y2'] = aNum(line.p2.y)
lineElement = etree.Element('line')
document.setAttributesFromDict(lineElement, elementAttrs)
return lineElement
def buildLine(pointA, pointB,elementAttrs=defaultStyleAttrs):
"""create an lxml line element from pointA to pointB with optional elementAttrs dictionary defining node attributes"""
elementAttrs = copy(elementAttrs)
elementAttrs['x1'] = aNum(pointA.x)
elementAttrs['y1'] = aNum(pointA.y)
elementAttrs['x2'] = aNum(pointB.x)
elementAttrs['y2'] = aNum(pointB.y)
lineElement = etree.Element('line')
document.setAttributesFromDict(lineElement, elementAttrs)
return lineElement
def makeText( text, position, elementAttrs=defaultTextStyleAttrs):
"""create a text node with given text and optional elementAttrs dictionary defining node attributes"""
elementAttrs = copy(elementAttrs)
textElement = etree.Element('text')
elementAttrs['x'] = aNum(position.x)
elementAttrs['y'] = aNum(position.y)
elementAttrs['transform'] = "translate(" + aNum(position.x ) + ", " + aNum(position.y) + ") scale(1,-1) translate(" + aNum(-1*position.x) + "," + aNum(-1*position.y) + ")"
textElement.text = text
document.setAttributesFromDict(textElement, elementAttrs)
return textElement