def _qCurveToOne(self, pt1, pt2):
"""
>>> pen = MathImageSVGPathPen(None)
>>> pen.qCurveTo((10, 20), (30, 40))
>>> pen._commands
['Q10 20 30 40']
"""
assert pt2 is not None
t = "Q"
t += pointToString(pt1) + " "
t += pointToString(pt2)
self._commands.append(t)
self._lastCommand = "Q"
self._lastX, self._lastY = pt2
def _curveToOne(self, pt1, pt2, pt3):
"""
>>> pen = MathImageSVGPathPen(None)
>>> pen.curveTo((10, 20), (30, 40), (50, 60))
>>> pen._commands
['C10 20 30 40 50 60']
"""
t = "C"
t += pointToString(pt1) + " "
t += pointToString(pt2) + " "
t += pointToString(pt3)
self._commands.append(t)
self._lastCommand = "C"
self._lastX, self._lastY = pt3
def _qCurveToOne(self, pt1, pt2):
"""
>>> pen = MathImageSVGPathPen(None)
>>> pen.qCurveTo((10, 20), (30, 40))
>>> pen._commands
['Q10 20 30 40']
"""
assert pt2 is not None
t = "Q"
t += pointToString(pt1) + " "
t += pointToString(pt2)
self._commands.append(t)
self._lastCommand = "Q"
self._lastX, self._lastY = pt2
def _curveToOne(self, pt1, pt2, pt3):
"""
>>> pen = MathImageSVGPathPen(None)
>>> pen.curveTo((10, 20), (30, 40), (50, 60))
>>> pen._commands
['C10 20 30 40 50 60']
"""
t = "C"
t += pointToString(pt1) + " "
t += pointToString(pt2) + " "
t += pointToString(pt3)
self._commands.append(t)
self._lastCommand = "C"
self._lastX, self._lastY = pt3
def _moveTo(self, pt):
"""
>>> pen = MathImageSVGPathPen(None)
>>> pen.moveTo((0, 0))
>>> pen._commands
['M0 0']
>>> pen = MathImageSVGPathPen(None)
>>> pen.moveTo((10, 0))
>>> pen._commands
['M10 0']
>>> pen = MathImageSVGPathPen(None)
>>> pen.moveTo((0, 10))
>>> pen._commands
['M0 10']
"""
self._handleAnchor()
t = "M%s" % (pointToString(pt))
self._commands.append(t)
self._lastCommand = "M"
self._lastX, self._lastY = pt
def _moveTo(self, pt):
"""
>>> pen = MathImageSVGPathPen(None)
>>> pen.moveTo((0, 0))
>>> pen._commands
['M0 0']
>>> pen = MathImageSVGPathPen(None)
>>> pen.moveTo((10, 0))
>>> pen._commands
['M10 0']
>>> pen = MathImageSVGPathPen(None)
>>> pen.moveTo((0, 10))
>>> pen._commands
['M0 10']
"""
self._handleAnchor()
t = "M%s" % (pointToString(pt))
self._commands.append(t)
self._lastCommand = "M"
self._lastX, self._lastY = pt
def _lineTo(self, pt):
"""
# duplicate point
>>> pen = MathImageSVGPathPen(None, optimise=True)
>>> pen.moveTo((10, 10))
>>> pen.lineTo((10, 10))
>>> pen._commands
['M10 10']
>>> pen = MathImageSVGPathPen(None, optimise=False)
>>> pen.moveTo((10, 10))
>>> pen.lineTo((10, 10))
>>> pen._commands
['M10 10', 'L10 10']
# vertical line
>>> pen = MathImageSVGPathPen(None, optimise=True)
>>> pen.moveTo((10, 10))
>>> pen.lineTo((10, 0))
>>> pen._commands
['M10 10', 'V0']
>>> pen = MathImageSVGPathPen(None, optimise=False)
>>> pen.moveTo((10, 10))
>>> pen.lineTo((10, 0))
>>> pen._commands
['M10 10', 'L10 0']
>>> pen = MathImageSVGPathPen(None, lineAsCurve=True)
>>> pen.moveTo((10, 10))
>>> pen.lineTo((10, 0))
>>> pen._commands
['M10 10', 'C10 10 10 0 10 0']
# horizontal line
>>> pen = MathImageSVGPathPen(None, optimise=True)
>>> pen.moveTo((10, 10))
>>> pen.lineTo((0, 10))
>>> pen._commands
['M10 10', 'H0']
>>> pen = MathImageSVGPathPen(None, optimise=False)
>>> pen.moveTo((10, 10))
>>> pen.lineTo((0, 10))
>>> pen._commands
['M10 10', 'L0 10']
>>> pen = MathImageSVGPathPen(None, lineAsCurve=True)
>>> pen.moveTo((10, 10))
>>> pen.lineTo((0, 10))
>>> pen._commands
['M10 10', 'C10 10 0 10 0 10']
# basic
>>> pen = MathImageSVGPathPen(None, optimise=True)
>>> pen.lineTo((70, 80))
>>> pen._commands
['L70 80']
>>> pen = MathImageSVGPathPen(None, optimise=False)
>>> pen.lineTo((70, 80))
>>> pen._commands
['L70 80']
# basic following a moveto
>>> pen = MathImageSVGPathPen(None, optimise=True)
>>> pen.moveTo((0, 0))
>>> pen.lineTo((10, 10))
>>> pen._commands
['M0 0', ' 10 10']
>>> pen = MathImageSVGPathPen(None, optimise=False)
>>> pen.moveTo((0, 0))
>>> pen.lineTo((10, 10))
>>> pen._commands
['M0 0', 'L10 10']
>>> pen = MathImageSVGPathPen(None, lineAsCurve=True)
>>> pen.moveTo((0, 0))
>>> pen.lineTo((10, 10))
>>> pen._commands
['M0 0', 'C0 0 10 10 10 10']
"""
x, y = pt
if self.lineAsCurve:
# draw straight lines as curves with on-point controls
self._curveToOne((self._lastX, self._lastY), (x,y), (x,y))
return
if not self.optimise:
cmd = "L"
pts = pointToString(pt)
else:
# duplicate point
if x == self._lastX and y == self._lastY:
return
# vertical line
elif x == self._lastX:
cmd = "V"
pts = valueToString(y)
# horizontal line
elif y == self._lastY:
cmd = "H"
pts = valueToString(x)
# previous was a moveto
elif self._lastCommand == "M":
cmd = None
pts = " " + pointToString(pt)
# basic
else:
cmd = "L"
pts = pointToString(pt)
# write the string
t = ""
if cmd:
t += cmd
self._lastCommand = cmd
t += pts
self._commands.append(t)
# store for future reference
self._lastX, self._lastY = pt
def _lineTo(self, pt):
"""
# duplicate point
>>> pen = MathImageSVGPathPen(None, optimise=True)
>>> pen.moveTo((10, 10))
>>> pen.lineTo((10, 10))
>>> pen._commands
['M10 10']
>>> pen = MathImageSVGPathPen(None, optimise=False)
>>> pen.moveTo((10, 10))
>>> pen.lineTo((10, 10))
>>> pen._commands
['M10 10', 'L10 10']
# vertical line
>>> pen = MathImageSVGPathPen(None, optimise=True)
>>> pen.moveTo((10, 10))
>>> pen.lineTo((10, 0))
>>> pen._commands
['M10 10', 'V0']
>>> pen = MathImageSVGPathPen(None, optimise=False)
>>> pen.moveTo((10, 10))
>>> pen.lineTo((10, 0))
>>> pen._commands
['M10 10', 'L10 0']
>>> pen = MathImageSVGPathPen(None, lineAsCurve=True)
>>> pen.moveTo((10, 10))
>>> pen.lineTo((10, 0))
>>> pen._commands
['M10 10', 'C10 10 10 0 10 0']
# horizontal line
>>> pen = MathImageSVGPathPen(None, optimise=True)
>>> pen.moveTo((10, 10))
>>> pen.lineTo((0, 10))
>>> pen._commands
['M10 10', 'H0']
>>> pen = MathImageSVGPathPen(None, optimise=False)
>>> pen.moveTo((10, 10))
>>> pen.lineTo((0, 10))
>>> pen._commands
['M10 10', 'L0 10']
>>> pen = MathImageSVGPathPen(None, lineAsCurve=True)
>>> pen.moveTo((10, 10))
>>> pen.lineTo((0, 10))
>>> pen._commands
['M10 10', 'C10 10 0 10 0 10']
# basic
>>> pen = MathImageSVGPathPen(None, optimise=True)
>>> pen.lineTo((70, 80))
>>> pen._commands
['L70 80']
>>> pen = MathImageSVGPathPen(None, optimise=False)
>>> pen.lineTo((70, 80))
>>> pen._commands
['L70 80']
# basic following a moveto
>>> pen = MathImageSVGPathPen(None, optimise=True)
>>> pen.moveTo((0, 0))
>>> pen.lineTo((10, 10))
>>> pen._commands
['M0 0', ' 10 10']
>>> pen = MathImageSVGPathPen(None, optimise=False)
>>> pen.moveTo((0, 0))
>>> pen.lineTo((10, 10))
>>> pen._commands
['M0 0', 'L10 10']
>>> pen = MathImageSVGPathPen(None, lineAsCurve=True)
>>> pen.moveTo((0, 0))
>>> pen.lineTo((10, 10))
>>> pen._commands
['M0 0', 'C0 0 10 10 10 10']
"""
x, y = pt
if self.lineAsCurve:
# draw straight lines as curves with on-point controls
self._curveToOne((self._lastX, self._lastY), (x,y), (x,y))
return
if not self.optimise:
cmd = "L"
pts = pointToString(pt)
else:
# duplicate point
if x == self._lastX and y == self._lastY:
return
# vertical line
elif x == self._lastX:
cmd = "V"
pts = valueToString(y)
# horizontal line
elif y == self._lastY:
cmd = "H"
pts = valueToString(x)
# previous was a moveto
elif self._lastCommand == "M":
cmd = None
pts = " " + pointToString(pt)
# basic
else:
cmd = "L"
pts = pointToString(pt)
# write the string
t = ""
if cmd:
t += cmd
self._lastCommand = cmd
t += pts
self._commands.append(t)
# store for future reference
self._lastX, self._lastY = pt