def arcTo(self, x1,y1, x2,y2, startAng=0, extent=90):
"""Like arc, but draws a line from the current point to
the start if the start is not the current point."""
pointList = pdfgeom.bezierArc(x1,y1, x2,y2, startAng, extent)
self._code.append('%0.4f %0.4f l' % pointList[0][:2])
for curve in pointList:
self._code.append('%0.4f %0.4f %0.4f %0.4f %0.4f %0.4f c' % curve[2:])
def ellipse(self, x, y, width, height):
"""adds an ellipse to the path"""
pointList = pdfgeom.bezierArc(x, y, x + width, y + height, 0, 360)
self._code.append('%0.4f %0.4f m' % pointList[0][:2])
for curve in pointList:
self._code.append('%0.4f %0.4f %0.4f %0.4f %0.4f %0.4f c' %
curve[2:])
def arcTo(self, x1,y1, x2,y2, startAng=0, extent=90):
"""Like arc, but draws a line from the current point to
the start if the start is not the current point."""
pointList = pdfgeom.bezierArc(x1,y1, x2,y2, startAng, extent)
self._code.append('%0.4f %0.4f l' % pointList[0][:2])
for curve in pointList:
self._code.append('%0.4f %0.4f %0.4f %0.4f %0.4f %0.4f c' % curve[2:])
def ellipse(self, x1, y1, x2, y2, stroke=1, fill=0):
"""Uses bezierArc, which conveniently handles 360 degrees -
nice touch Robert"""
pointList = pdfgeom.bezierArc(x1,y1, x2,y2, 0, 360)
#move to first point
self._code.append('n %0.4f %0.4f m' % pointList[0][:2])
for curve in pointList:
self._code.append('%0.4f %0.4f %0.4f %0.4f %0.4f %0.4f c' % curve[2:])
#finish
self._code.append(PATH_OPS[stroke, fill, self._fillMode])
def ellipse(self, x1, y1, x2, y2, stroke=1, fill=0):
"""Uses bezierArc, which conveniently handles 360 degrees -
nice touch Robert"""
pointList = pdfgeom.bezierArc(x1,y1, x2,y2, 0, 360)
#move to first point
self._code.append('n %0.4f %0.4f m' % pointList[0][:2])
for curve in pointList:
self._code.append('%0.4f %0.4f %0.4f %0.4f %0.4f %0.4f c' % curve[2:])
#finish
self._code.append(PATH_OPS[stroke, fill, self._fillMode])
def drawArc(self,
x1,
y1,
x2,
y2,
startAng=0,
extent=90,
edgeColor=None,
edgeWidth=None,
fillColor=None):
"""This draws a PacMan-type shape connected to the centre. One
idiosyncracy - if you specify an edge color, it apples to the
outer curved rim but not the radial edges."""
if edgeColor:
self._updateLineColor(edgeColor)
if edgeWidth:
self._updateLineWidth(edgeWidth)
if fillColor:
self._updateFillColor(fillColor)
# I need to do some more work on flipping the coordinate system -
# in pdfgen - note the angle reversal needed when drawing top-down.
pointList = pdfgeom.bezierArc(x1, y1, x2, y2, -startAng, -extent)
start = pointList[0]
end = pointList[-1]
x_cen = 0.5 * (x1 + x2)
y_cen = 0.5 * (y1 + y2)
#first the fill
p = self.pdf.beginPath()
p.moveTo(x_cen, y_cen)
p.lineTo(start[0], start[1])
for curve in pointList:
p.curveTo(curve[2], curve[3], curve[4], curve[5], curve[6],
curve[7])
p.close() #back to centre
self._endPath(p, transparent, fillColor) #handles case of transparency
#now the outer rim
p2 = self.pdf.beginPath()
p2.moveTo(start[0], start[1])
for curve in pointList:
p2.curveTo(curve[2], curve[3], curve[4], curve[5], curve[6],
curve[7])
self._endPath(p2, edgeColor,
transparent) #handles case of transparency
if edgeColor:
self._updateLineColor(self.defaultLineColor)
if edgeWidth:
self._updateLineWidth(self.defaultLineWidth)
if fillColor:
self._updateFillColor(self.defaultFillColor)
def arc(self, x1,y1, x2,y2, startAng=0, extent=90):
"""Contributed to piddlePDF by Robert Kern, 28/7/99.
Draw a partial ellipse inscribed within the rectangle x1,y1,x2,y2,
starting at startAng degrees and covering extent degrees. Angles
start with 0 to the right (+x) and increase counter-clockwise.
These should have x1<x2 and y1<y2.
The algorithm is an elliptical generalization of the formulae in
Jim Fitzsimmon's TeX tutorial <URL: http://www.tinaja.com/bezarc1.pdf>."""
pointList = pdfgeom.bezierArc(x1,y1, x2,y2, startAng, extent)
#move to first point
self._code.append('%0.4f %0.4f m' % pointList[0][:2])
for curve in pointList:
self._code.append('%0.4f %0.4f %0.4f %0.4f %0.4f %0.4f c' % curve[2:])
def arc(self, x1,y1, x2,y2, startAng=0, extent=90):
"""Contributed to piddlePDF by Robert Kern, 28/7/99.
Draw a partial ellipse inscribed within the rectangle x1,y1,x2,y2,
starting at startAng degrees and covering extent degrees. Angles
start with 0 to the right (+x) and increase counter-clockwise.
These should have x1<x2 and y1<y2.
The algorithm is an elliptical generalization of the formulae in
Jim Fitzsimmon's TeX tutorial <URL: http://www.tinaja.com/bezarc1.pdf>."""
pointList = pdfgeom.bezierArc(x1,y1, x2,y2, startAng, extent)
#move to first point
self._code.append('%0.4f %0.4f m' % pointList[0][:2])
for curve in pointList:
self._code.append('%0.4f %0.4f %0.4f %0.4f %0.4f %0.4f c' % curve[2:])
def wedge(self, x1,y1, x2,y2, startAng, extent, stroke=1, fill=0):
"""Like arc, but connects to the centre of the ellipse.
Most useful for pie charts and PacMan!"""
x_cen = (x1+x2)/2.
y_cen = (y1+y2)/2.
pointList = pdfgeom.bezierArc(x1,y1, x2,y2, startAng, extent)
self._code.append('n %0.4f %0.4f m' % (x_cen, y_cen))
# Move the pen to the center of the rectangle
self._code.append('%0.4f %0.4f l' % pointList[0][:2])
for curve in pointList:
self._code.append('%0.4f %0.4f %0.4f %0.4f %0.4f %0.4f c' % curve[2:])
# finish the wedge
self._code.append('%0.4f %0.4f l ' % (x_cen, y_cen))
# final operator
self._code.append(PATH_OPS[stroke, fill, self._fillMode])
def wedge(self, x1,y1, x2,y2, startAng, extent, stroke=1, fill=0):
"""Like arc, but connects to the centre of the ellipse.
Most useful for pie charts and PacMan!"""
x_cen = (x1+x2)/2.
y_cen = (y1+y2)/2.
pointList = pdfgeom.bezierArc(x1,y1, x2,y2, startAng, extent)
self._code.append('n %0.4f %0.4f m' % (x_cen, y_cen))
# Move the pen to the center of the rectangle
self._code.append('%0.4f %0.4f l' % pointList[0][:2])
for curve in pointList:
self._code.append('%0.4f %0.4f %0.4f %0.4f %0.4f %0.4f c' % curve[2:])
# finish the wedge
self._code.append('%0.4f %0.4f l ' % (x_cen, y_cen))
# final operator
self._code.append(PATH_OPS[stroke, fill, self._fillMode])
def drawArc(self, x1,y1, x2,y2, startAng=0, extent=90, edgeColor=None,
edgeWidth=None, fillColor=None, dash=None, **kwargs):
"""This draws a PacMan-type shape connected to the centre. One
idiosyncracy - if you specify an edge color, it apples to the
outer curved rim but not the radial edges."""
if edgeColor:
self._updateLineColor(edgeColor)
if edgeWidth:
self._updateLineWidth(edgeWidth)
if fillColor:
self._updateFillColor(fillColor)
# I need to do some more work on flipping the coordinate system -
# in pdfgen - note the angle reversal needed when drawing top-down.
pointList = pdfgeom.bezierArc(x1,y1, x2,y2, -startAng, -extent)
start = pointList[0]
end = pointList[-1]
x_cen = 0.5 * (x1 + x2)
y_cen = 0.5 * (y1 + y2)
#first the fill
p = self.pdf.beginPath()
p.moveTo(x_cen, y_cen)
p.lineTo(start[0], start[1])
for curve in pointList:
p.curveTo(curve[2], curve[3], curve[4], curve[5], curve[6], curve[7])
p.close() #back to centre
self._endPath(p, transparent, fillColor) #handles case of transparency
#now the outer rim
p2 = self.pdf.beginPath()
p2.moveTo(start[0], start[1])
for curve in pointList:
p2.curveTo(curve[2], curve[3], curve[4], curve[5], curve[6], curve[7])
self._endPath(p2, edgeColor, transparent) #handles case of transparency
if edgeColor:
self._updateLineColor(self.defaultLineColor)
if edgeWidth:
self._updateLineWidth(self.defaultLineWidth)
if fillColor:
self._updateFillColor(self.defaultFillColor)
def ellipse(self, x, y, width, height):
"""adds an ellipse to the path"""
pointList = pdfgeom.bezierArc(x, y, x + width,y + height, 0, 360)
self._code.append('%0.4f %0.4f m' % pointList[0][:2])
for curve in pointList:
self._code.append('%0.4f %0.4f %0.4f %0.4f %0.4f %0.4f c' % curve[2:])
