115 lines
3.0 KiB
Python
115 lines
3.0 KiB
Python
"""
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Rotationssensor AS5600 mit Funktion "Kiel"
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WIP
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Idee:
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- Zusätzlich Anzeigemöglichkeit für die Tiefe eines variablen Kiels
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- Mode-Taste
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"""
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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 Keel(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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# Wert für Kielrotation
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self.valref = self.bd.getRef("xdrRotK")
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def draw(self, ctx):
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# Mitte oben Instrument (Halbkreis)
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cx = 200
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cy = 150
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# Radius Kielposition
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r = 110
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# Titel
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ctx.select_font_face("Ubuntu", cairo.FontSlant.NORMAL, cairo.FontWeight.BOLD)
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ctx.set_font_size(32)
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ctx.move_to(100, 70)
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ctx.show_text("Keel Position")
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ctx.set_font_size(24)
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ctx.move_to(175, 110)
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ctx.show_text(self.valref.unit)
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ctx.stroke()
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# Halbkreis für Skala
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ctx.set_source_rgb(*self.fgcolor)
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ctx.set_line_width(3)
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ctx.arc(cx, cy, r + 10, 0, math.pi)
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ctx.stroke()
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# Skala mit Strichen, Punkten und Beschriftung
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char = {
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90: "45",
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120: "30",
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150: "15",
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180: "0",
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210: "15",
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240: "30",
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270: "45"
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}
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# Zeichnen in 10°-Schritten
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ctx.set_font_size(16)
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for i in range(90, 271, 10):
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fx = math.sin(i / 180 * math.pi)
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fy = math.cos(i / 180 * math.pi)
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if i in char:
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x = cx + (r - 30) * fx
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y = cy - (r - 30) * fy
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self.draw_text_center(ctx, x, y, char[i])
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ctx.stroke()
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if i % 30 == 0:
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ctx.move_to(cx + (r - 10) * fx, cy - (r - 10) * fy)
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ctx.line_to(cx + (r + 10) * fx, cy - (r + 10) * fy)
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ctx.stroke()
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else:
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x = cx + r * fx
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y = cy - r * fy
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ctx.arc(x, y, 2, 0, 2*math.pi)
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ctx.fill()
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# Boot und Wasserlinie
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ctx.arc(cx, cy - 10, 28, 0, math.pi)
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ctx.fill()
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ctx.set_line_width(4)
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ctx.move_to(150, cy)
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ctx.line_to(250, cy)
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ctx.stroke()
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#ctx.arc(200, 150, r + 10, 0, 2*math.pi)
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#ctx.fill()
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#ctx.set_source_rgb(*self.bgcolor)
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#ctx.arc(200, 150, r + 7, 0, 2* math.pi)
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#ctx.rectangle(0, 30, 299, 122)
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#ctx.fill()
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angle = -15
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#angle = self.valref.value
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#TODO Angle limits to +/-45°
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if angle < -45:
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angle = -45
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elif angle > 45:
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angle = 45
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angle *= 2 # stretched scale
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# Kiel
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p = ((cx - 6, cy), (cx + 6, cy), (cx + 2, cy + r - 50), (cx - 2, cy + r - 50))
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keel = self.rotate((cx, cy), p, angle)
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ctx.move_to(*keel[0])
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for point in keel[1:]:
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ctx.line_to(*point)
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ctx.fill()
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# Kiel-Bombe
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x, y = self.rotate((cx, cy), ((cx, cy + r -50),), angle)[0]
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ctx.arc(x, y, 5, 0, 2*math.pi)
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ctx.fill()
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