def plotSVG(self, topLeft, depth, theSVGWriter):
"""Plot the track gridlines.
topLeft - A Coord.Pt() object that is the top left of the canvas.
depth - A Coord.Dim() object that is the total depth of the grid below topLeft.
drive - The plot driver."""
if self._gridGn is not None:
botLeft = Coord.newPt(topLeft, incY=depth)
for stroke, pos in self._gridGn(self._lP.value, self._rP.value):
# Compute the line position
topP = Coord.newPt(topLeft,
incX=Coord.Dim(pos, self._lP.units))
botP = Coord.newPt(botLeft,
incX=Coord.Dim(pos, self._lP.units))
with SVGWriter.SVGLine(
theSVGWriter,
topP,
botP,
attrs=Stroke.retSVGAttrsFromStroke(stroke)):
pass
def test_00(self):
"""TestPlotTrack.test_00(): Construct a lin/log/log track with FEET 1/200 and plot it in SVG."""
myCnv = Plot.Canvas(Coord.Dim(8.5, 'in'), Coord.Dim(12, 'in'),
PlotConstants.MarginQtrInch)
myViewPort = Coord.Box(
width=myCnv.width,
depth=myCnv.depth,
)
myTopLeft = Coord.Pt(Coord.Dim(0.25, 'in'), Coord.Dim(0.25, 'in'))
myF = io.StringIO()
myTracks = [
Track.Track(leftPos=Coord.Dim(0.0, 'in'),
rightPos=Coord.Dim(2.4, 'in'),
gridGn=Track.genLinear10),
Track.Track(
leftPos=Coord.Dim(2.4, 'in'),
rightPos=Coord.Dim(3.2, 'in'),
gridGn=None,
plotXAxis=True,
),
Track.Track(leftPos=Coord.Dim(3.2, 'in'),
rightPos=Coord.Dim(5.6, 'in'),
gridGn=Track.genLog10Decade2Start2),
Track.Track(leftPos=Coord.Dim(5.6, 'in'),
rightPos=Coord.Dim(8, 'in'),
gridGn=Track.genLog10Decade2Start2),
]
with SVGWriter.SVGWriter(myF, myViewPort) as xS:
# Do tracks first
for t in myTracks:
#xS.comment(str(t))
if t.hasGrid:
t.plotSVG(
myTopLeft,
myCnv.depth - myCnv.margins.top - myCnv.margins.bottom,
xS,
)
# Now XGrid
# We are plotting up so xPosStart is at bottom
myXposStart = myCnv.depth - myCnv.margins.bottom
myXposStop = myCnv.margins.top
myXg = XGrid.XGrid(200)
# Plot depth lines
for pos, stroke in myXg.genXPosStroke(xFrom=4307.5,
xInc=False,
units=b'FEET'):
myXpos = myXposStart + pos
if myXpos < myXposStop:
break
for t in myTracks:
if t.hasGrid:
with SVGWriter.SVGLine(
xS,
Coord.Pt(t.left + myCnv.margins.left, myXpos),
Coord.Pt(t.right + myCnv.margins.left, myXpos),
attrs=Stroke.retSVGAttrsFromStroke(stroke)):
pass
# Plot depth text
textAttrs = {
'text-anchor': 'end',
'dominant-baseline': 'middle',
}
for pos, val in myXg.genXPosText(xFrom=4307.5,
xInc=False,
units=b'FEET'):
myXpos = myXposStart + pos
if myXpos < myXposStop:
break
for t in myTracks:
if t.plotXAxis:
myPt = Coord.Pt(
t.right + myCnv.margins.left -
Coord.Dim(0.05, 'in'), myXpos)
with SVGWriter.SVGText(xS, myPt, 'Courier', 16,
textAttrs):
xS.characters(str(val))
print()
print(myF.getvalue())