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Draw dashed isotherms

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XANTRONIX 2025-02-24 12:16:33 -05:00
parent 298bbe6357
commit 9e3c30f487
1 changed files with 11 additions and 1 deletions
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12
lib/xmet/skew_t.py
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@ -47,7 +47,7 @@ class SkewTGraph():
return factor * self.height
def draw_isobars(self, cr: cairo.Context, x: float, y: float):
cr.set_source_rgb(0.5, 0.5, 0.5)
cr.save()
for pressure in range(PRESSURE_MIN, PRESSURE_MAX+1, PRESSURE_STEP):
coord = self.graph_to_screen(-self.width / 2,
@ -62,6 +62,8 @@ class SkewTGraph():
cr.rel_line_to(self.width, 0)
cr.stroke()
cr.restore()
def skew_t_to_graph(self, x: float, y: float):
return (x+y, y)
@ -75,6 +77,12 @@ class SkewTGraph():
return self.graph_to_screen(*self.sample_to_graph(temp, pressure))
def draw_isotherms(self, cr: cairo.Context, x: float, y: float):
cr.save()
cr.set_source_rgb(0.5, 0.5, 0.5)
cr.set_line_width(0.5)
cr.set_dash([5, 5], 1)
for temp in range(-150, TEMP_MAX+1, TEMP_STEP):
x1, y1 = self.sample_to_screen(temp, PRESSURE_MAX)
x2, y2 = self.sample_to_screen(temp, PRESSURE_MIN)
@ -88,6 +96,8 @@ class SkewTGraph():
cr.line_to(x + x2, y + y2)
cr.stroke()
cr.restore()
def draw_samples(self,
cr: cairo.Context,
x: float,