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@robotman2412
Last active Aug 12, 2020
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Drawing a boat, on a wave: simplified
import display, math
def drawBoat():
display.pushMatrix()
drawBoatBottom(0x000000)
display.translate(-4, 0)
drawBoatMast(0x000000, 0x000000)
display.popMatrix()
def drawBoatMast(mastColor, flagColor):
# 0--1
# | |
# | 6
# | |\
# | 5-4
# | |
# 3--2
x0, y0 = 0, -23
x1, y1 = 3, -23
x2, y2 = 3, 0
x3, y3 = 0, 0
x4, y4 = 12, -10
x5, y5 = 3, -10
x6, y6 = 3, -20
display.drawQuad(x0, y0, x1, y1, x2, y2, x3, y3, mastColor)
display.drawTri(x6, y6, x4, y4, x5, y5, flagColor)
def drawBoatBottom(color):
# 0--------1
# \ /
# 3----2
x0, y0 = -20, 0
x1, y1 = 20, 0
x2, y2 = 16, 8
x3, y3 = -16, 8
display.drawQuad(x0, y0, x1, y1, x2, y2, x3, y3, color)
def drawSun(color):
display.pushMatrix()
display.translate(-3, -3 - display.height())
display.drawCircle(0, 0, 30, 0, 360, True, color)
display.rotate(sunOffset)
for i in range(20):
display.rotate(math.pi / 10)
display.drawLine(0, 35, 0, 45, color)
display.popMatrix()
# For good measure.
display.clearMatrix()
display.translate(0, display.height())
sunOffset = 0
offset = 0
boatX = display.width() / 6
boatAngle = 0
boatY = 0
while True:
display.drawFill(0xffffff)
drawSun(0x000000)
for i in range(display.width()):
wave = math.sin((i + offset) * math.pi / 35) * 8 - 35
display.drawPixel(i, wave, 0x000000)
if i & 1:
for j in range(round(wave - 1) | 1, 0, 2):
display.drawPixel(i, j + ((i >> 1) & 1) + 1, 0x000000)
display.pushMatrix()
waterLevelBeforeBoat = math.sin((boatX + 2 + offset) * math.pi / 35) * 8 - 35
boatY = math.sin((boatX + offset) * math.pi / 35) * 8 - 35
boatAngle = math.atan2(waterLevelBeforeBoat - boatY, 2)
display.translate(boatX, boatY - 6)
display.rotate(boatAngle)
drawBoat()
display.popMatrix()
offset += 8
sunOffset += math.pi * 0.025
display.flush()
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