import svgwrite
import math

# Create a canvas of 200mm x 200mm
#conda install dwg = svgwrite.Drawing('circle_with_dividers_and_numerals.svg', profile='tiny', size=('200mm', '200mm'))
# Create a canvas of 200mm x 200mm with units set to millimeters
dwg = svgwrite.Drawing('circle_with_dividers_and_numerals.svg', profile='full', size=('200mm', '200mm'), viewBox=('0 0 200 200'))

# Draw a circle in the middle with a diameter of 140mm and 2mm wide
circle_center = (100, 100)
circle_radius = 70
dwg.add(dwg.circle(center=circle_center, r=circle_radius, stroke='black', fill='none', stroke_width=2))

# Function to create equal divider lines around the inner circumference of the circle
def create_divider_lines(dwg, center, radius, num_lines, line_length, line_width):
    angle_step = 360 / num_lines
    center_x, center_y = center
    for i in range(num_lines):
        angle = math.radians(i * angle_step)
        start_x = center_x + (radius - line_width / 2) * math.cos(angle)
        start_y = center_y + (radius - line_width / 2) * math.sin(angle)
        end_x = center_x + (radius - line_width / 2 - line_length) * math.cos(angle)
        end_y = center_y + (radius - line_width / 2 - line_length) * math.sin(angle)
        dwg.add(dwg.line(start=(start_x, start_y), end=(end_x, end_y), stroke='black', stroke_width=line_width))

# Function to add Roman numerals around the outer circumference of the circle
def add_roman_numerals(dwg, center, radius, num_numerals):
    roman_numerals = ["I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX", "X", "XI", "XII"]
    roman_numerals = roman_numerals*2
    angle_step = 360 / num_numerals
    center_x, center_y = center
    for i in range(num_numerals):
        angle = math.radians(i * angle_step - 90)  # Adjust angle to start from the top
        text_x = center_x + radius * math.cos(angle)
        text_y = center_y + radius * math.sin(angle)
        #dwg.add(dwg.text(roman_numerals[i % len(roman_numerals)], insert=(text_x, text_y + 3), text_anchor="middle", font_size="10pt"))
        rotation_angle = i * angle_step
        dwg.add(dwg.text(roman_numerals[i % 24], insert=(text_x, text_y + 0), text_anchor="middle", font_size="8pt", 
                         transform=f"rotate({rotation_angle} {text_x},{text_y + 0})"))


# Use the function to create 24 divider lines of 18mm long and 1mm wide
create_divider_lines(dwg, circle_center, circle_radius, 24, 10, 0.8)
create_divider_lines(dwg, circle_center, circle_radius, 24*2, 7, 0.8)
create_divider_lines(dwg, circle_center, circle_radius, 24*4, 6, 0.4)
create_divider_lines(dwg, circle_center, circle_radius, 24*12, 4, 0.4)

# Add one set of Roman numerals around the outer circumference of the circle
add_roman_numerals(dwg, circle_center, circle_radius + 3, 24)

# Save the SVG file
dwg.save(pretty=True, indent=2)

print("SVG saved: 'circle_with_dividers_and_numerals.svg'")