def draw(ctx, width, height, frame_no, frame_count):
setup(ctx, width, height, width=5, background=Color(0.8))
# The line function is a convenience function that adds a line as a new path.
# You can fill or stroke it as you wish.
line(ctx, (1, 1), (2, 3))
ctx.set_source_rgba(*Color(1, 0, 0))
ctx.set_line_width(0.1)
ctx.stroke()
# Line objects can only be stroked as they do not contain an area.
Line(ctx).of_start_end((3, 1), (4, 4)).stroke(Color('fuchsia'), 0.2)
def draw(ctx, width, height, frame_no, frame_count):
setup(ctx, width, height, background=Color(0.8))
ctx.set_source_rgba(*Color(0, 0, 0.5))
ctx.set_line_width(3)
## Draw lines with ticks, paraticks and arrowheads
a = (50, 50)
b = (50, 150)
line(ctx, a, b)
ctx.stroke()
tick(ctx, a, b, length=12, gap=6)
ctx.stroke()
arrowhead(ctx, a, b, length=24)
ctx.stroke()
a = (100, 50)
b = (150, 150)
line(ctx, a, b)
ctx.stroke()
tick(ctx, a, b, 2, length=12, gap=6)
ctx.stroke()
a = (250, 50)
b = (200, 150)
line(ctx, a, b)
ctx.stroke()
tick(ctx, a, b, 3, length=12, gap=6)
ctx.stroke()
a = (350, 50)
b = (350, 150)
line(ctx, a, b)
ctx.stroke()
paratick(ctx, a, b, length=12, gap=6)
ctx.stroke()
a = (400, 50)
b = (450, 150)
line(ctx, a, b)
ctx.stroke()
paratick(ctx, a, b, 2, length=12, gap=6)
ctx.stroke()
a = (550, 150)
b = (500, 50)
line(ctx, a, b)
ctx.stroke()
paratick(ctx, a, b, 3, length=12, gap=6)
ctx.stroke()
## Draw lines with angles
a = (50, 250)
b = (50, 450)
c = (150, 450)
polygon(ctx, (a, b, c), closed=False)
ctx.stroke()
angle_marker(ctx, a, b, c, radius=24, gap=6, right_angle=True)
ctx.stroke()
a = (250, 250)
b = (200, 450)
c = (300, 450)
polygon(ctx, (a, b, c), closed=False)
ctx.stroke()
angle_marker(ctx, a, b, c, 3, radius=24, gap=6)
ctx.stroke()
a = (300, 250)
b = (400, 300)
c = (500, 300)
polygon(ctx, (a, b, c), closed=False)
ctx.stroke()
angle_marker(ctx, c, b, a, radius=24, gap=6)
ctx.stroke()
a = (300, 350)
b = (400, 400)
c = (500, 400)
polygon(ctx, (a, b, c), closed=False)
ctx.stroke()
angle_marker(ctx, a, b, c, 2, radius=24, gap=6)
ctx.stroke()