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Draw circles

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This commit is contained in:
Thomas Farstrike
2025-05-08 21:51:14 +02:00
parent 5556540df7
commit b0cd9411d2
1 changed files with 34 additions and 6 deletions
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internal_filesystem/apps/com.example.draw/assets/draw.py
+34 -6
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@@ -2,6 +2,8 @@ appscreen = lv.screen_active()
import lvgl as lv
DARKPINK = lv.color_hex(0xEC048C)
def touch_cb(event):
global canvas
event_code=event.get_code()
@@ -15,12 +17,38 @@ def touch_cb(event):
point = lv.point_t()
indev.get_point(point)
x, y = point.x, point.y
#import random
#x = random.randrange(1,200)
#y = random.randrange(1,200)
#print(f"got indev {x} {y} {point}")
#canvas.draw_arc(x, y, 5, 0, 360, lv.color_black())
canvas.set_px(x,y,lv.color_black(),lv.OPA.COVER)
#
# drawing a point works:
#canvas.set_px(x,y,lv.color_black(),lv.OPA.COVER)
#
# drawing a square like this works:
#for dx in range(-5,5):
# for dy in range(-5,5):
# canvas.set_px(x+dx,y+dy,DARKPINK,lv.OPA.COVER)
#
# drawing a circle works:
radius = 7 # Set desired radius
for dx in range(-radius, radius):
for dy in range(-radius, radius):
if dx * dx + dy * dy <= radius * radius:
canvas.set_px(x + dx, y + dy, DARKPINK, lv.OPA.COVER)
# Line drawing like this doesn't work:
layer = lv.layer_t()
canvas.init_layer(layer)
dsc = lv.draw_line_dsc_t()
dsc.color = DARKPINK
dsc.width = 4
dsc.round_end = 1
dsc.round_start = 1
dsc.p1 = lv.point_precise_t()
dsc.p1.x = x
dsc.p1.y = y
dsc.p2 = lv.point_precise_t()
dsc.p2.x = 100
dsc.p2.y = 200
#layer.draw_line(dsc) doesnt exist!
lv.draw_line(layer,dsc) # doesnt do anything!
canvas.finish_layer(layer)
else:
print("no indev!")