Inner AA Dimension

Inner Dimensions
Horizontal	Vertical

Inner AA Dimension Attributes

This is similar to the LineAA dimension, except that text and font have been added and angle is no longer necessary.

Show/Hide inner_dim_aa properties

• im

  PIL image handle, link to the calling program

• dr

  PIL draw handle, link to the calling program

• ptA

  Start coordinates

• ptB

  Finishing coordinates

• text

  Text to be written next to the dimension

• font

  Font of the text

• fill

  Line colour, as an RGB tuple

• arrowhead

  Three integer tuple describing the shape and size of the arrow

• arrow

  position of the arrow on the line, which influences the direction it points.

• back

  Background colour, as an RGB tuple

Normally inner dimensions are not slanted. The position of the text changes according to orientation, so still use angled_text.

Show/Hide Code test_inner_aa_dim.py

import sys
sys.path.append('../dims')

from PIL import Image, ImageDraw, ImageFont
from DimLinesAA import dimension_aa
from DimLinesPIL import angled_text

def inner_dim_aa(im, dr, ptA, ptB, text=None, font=None, width=1, fill=(0,0,0),
              arrowhead=(8, 10, 3), arrow='both', back=(225,225,221)):
    # used on horizontal or vertical inner dimensions

    dimension_aa(im, dr, ptA, ptB, fill=fill, arrowhead=arrowhead,
              arrow='both', back=back)
    # vertical
    if ptA[0] == ptB[0]:
        at = ptA[0] - 10, (ptA[1] + ptB[1]) //2
        angle = 90

    # horizontal
    elif ptA[1] == ptB[1]:
        at = (ptA[0] + ptB[0]) // 2, ptA[1] - 10
        angle = 0
    else:
        raise Exception('The inner dimension: should be vertical or horizontal '\
                        '{} {} coordinates'.format(ptA, ptB))

    angled_text(im, at, text, angle, font=font, fill=fill)

if __name__ == '__main__':
    Text = 'Test'
    Font = ImageFont.truetype('consola.ttf', 15)

    Back = (255,255,221)
    image = Image.new('RGB', (120, 120), Back)

    draw = ImageDraw.Draw(image)

    Fill = (0,0,0)

    draw.line([(30,30), (90,30)], width=2, fill=Fill)
    draw.line([(30,90), (90,90)], width=2, fill=Fill)

    ptA = (60,30)
    ptB = (60,90)

    inner_dim_aa(image, draw, ptA, ptB, text=Text, font=Font, fill=Fill, back=Back)
    #im, ldraw, ptA, ptB, text=None, font=None, fill=(0,0,0),
              #arrowhead=(8, 10, 3), arrow='both', back=(225,225,221))

    #image.save('../figures/vert_inner.png') #
    image.show()