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import math
import pymupdf
#------------------------------------------------------------------------------
# preliminary stuff: create function value lists for sine and cosine
#------------------------------------------------------------------------------
w360 = math.pi * 2 # go through full circle
deg = w360 / 360 # 1 degree as radians
rect = pymupdf.Rect(100,200, 300, 300) # use this rectangle
first_x = rect.x0 # x starts from left
first_y = rect.y0 + rect.height / 2. # rect middle means y = 0
x_step = rect.width / 360 # rect width means 360 degrees
y_scale = rect.height / 2. # rect height means 2
sin_points = [] # sine values go here
cos_points = [] # cosine values go here
for x in range(362): # now fill in the values
x_coord = x * x_step + first_x # current x coordinate
y = -math.sin(x * deg) # sine
p = (x_coord, y * y_scale + first_y) # corresponding point
sin_points.append(p) # append
y = -math.cos(x * deg) # cosine
p = (x_coord, y * y_scale + first_y) # corresponding point
cos_points.append(p) # append
#------------------------------------------------------------------------------
# create the document with one page
#------------------------------------------------------------------------------
doc = pymupdf.open() # make new PDF
page = doc.new_page() # give it a page
#------------------------------------------------------------------------------
# add the Ink annotation, consisting of 2 curve segments
#------------------------------------------------------------------------------
annot = page.add_ink_annot((sin_points, cos_points))
# let it look a little nicer
annot.set_border(width=0.3, dashes=[1,]) # line thickness, some dashing
annot.set_colors(stroke=(0,0,1)) # make the lines blue
annot.update() # update the appearance
page.draw_rect(rect, width=0.3) # only to demonstrate we did OK
doc.save("a-inktest.pdf")
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