103 lines
2.9 KiB
Python
103 lines
2.9 KiB
Python
"""
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3D-View angelehnt an die NASA Clipper GPS-Darstellung
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"""
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import os
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import cairo
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import math
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from .page import Page
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class XTETrack(Page):
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def __init__(self, pageno, cfg, appdata, boatdata):
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super().__init__(pageno, cfg, appdata, boatdata)
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self.xte = self.bd.getRef("XTE")
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self.cog = self.bd.getRef("COG")
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self.btw = self.bd.getRef("BTW")
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self.dtw = self.bd.getRef("DTW")
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self.wpname = "no data"
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self.symbol = cairo.ImageSurface.create_from_png(os.path.join(cfg['imgpath'], "ship.png"))
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def draw(self, ctx):
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# Beschriftung unter den Werten
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ctx.select_font_face("Ubuntu", cairo.FontSlant.NORMAL, cairo.FontWeight.BOLD)
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ctx.set_font_size(16)
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ctx.move_to(50, 188);
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ctx.show_text("Cross-track error")
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ctx.move_to(270, 188)
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ctx.show_text("Track")
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ctx.move_to(45, 275);
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ctx.show_text("Distance to waypoint")
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ctx.move_to(260, 275);
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ctx.show_text("Bearing")
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ctx.stroke()
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# Meßwerte
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ctx.select_font_face("DSEG7 Classic")
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ctx.set_font_size(60)
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ctx.move_to(40, 170)
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#ctx.show_text(self.xte.format())
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ctx.show_text("2.3")
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ctx.move_to(220, 170)
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#ctx.show_text(self.cog.format())
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ctx.show_text("253")
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ctx.move_to(40, 257)
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#ctx.show_text(self.dtw.format())
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ctx.show_text("5.8")
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ctx.move_to(220, 257)
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#ctx.show_text(self.btw.format())
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ctx.show_text("248")
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# 3D-Ansicht oben
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# TODO Schiffssymbol
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ctx.save()
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ctx.set_source_surface(self.symbol, 186, 68)
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ctx.paint()
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ctx.restore()
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# Segmente: 2 1 0 3 4 5
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seg = [True] * 6
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points = {
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2: ((0, 54), (46, 24), (75, 24), (0, 90)),
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1: ((0, 100), (82, 24), (112, 24), (50, 100)),
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0: ((60, 100), (117, 24), (147, 24), (110, 100)),
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3: ((340, 100), (283, 24), (253, 24), (290, 100)),
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4: ((399, 100), (318, 24), (289, 24), (350, 100)),
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5: ((399, 54), (354, 24), (325, 24), (399, 90))
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}
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# Winkeldifferenz
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diff = (self.cog.value or 0) - (self.btw.value or 0)
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if diff < -180:
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diff += 360
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elif diff > 180:
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diff -= 360
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if diff > 0:
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order = (3, 4, 5, 0, 1, 2)
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else:
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order = (0, 1, 2, 3, 4, 5)
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# Anzahl aktiver Segmente
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seg_step = math.radians(3)
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nseg = min(abs(diff) / seg_step, 5)
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i = 0
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while nseg > 0:
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seg[order[i]] = False
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i += 1
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nseg -= 1
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# Segmente zeichnen
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for p in range(6):
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ctx.move_to(*points[p][0])
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ctx.line_to(*points[p][1])
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ctx.line_to(*points[p][2])
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ctx.line_to(*points[p][3])
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if seg[p]:
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ctx.fill()
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else:
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ctx.stroke()
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