This document describes how to render a tee like Teeworlds 0.6 or DDNet, given a tee skin image.
A skin image must have an aspect ratio of 2:1 (width:height). We get the following body parts by splitting the tee skin image (3/8 means at 3/8 of the image's width, 1/4 means at 1/4 of the image's height, etc.):
body: (0/8, 0/4) to (3/8, 3/4)
body_outline: (3/8, 0/4) to (6/8, 3/4)
hand: (6/8, 0/4) to (7/8, 1/4)
hand_outline: (7/8, 0/4) to (8/8, 1/4)
foot: (6/8, 1/4) to (8/8, 2/4)
foot_outline: (6/8, 2/4) to (8/8, 3/4)
eye_normal: (2/8, 3/4) to (3/8, 4/4)
eye_angry: (3/8, 3/4) to (4/8, 4/4)
eye_pain: (4/8, 3/4) to (5/8, 4/4)
eye_happy: (5/8, 3/4) to (6/8, 4/4)
eye_dead: (6/8, 3/4) to (7/8, 4/4) -- entirely unused
eye_surprise: (7/8, 3/4) to (8/8, 4/4)
This leaves an unused rectangle at (0/8, 3/4) to (2/8, 4/4).
For rendering, the segments need to be scaled like this (relative to body being 100%):
body: 100%
feet: 150%
eyes: 120%
hand: 93.75%
The last eye shape eye_blink is achieved by scaling eye_normal 120%
horizontally, but 45% vertically.
Then, the images must be positioned like the following (hands or moving feet not handled), relative to 64/64 or 1 being the edge length of the body segment).
body: 4/64 up
feet:
10/64 down
7/64 left/right
eyes:
0.125 up
0.05 left/right
eye movement:
dir = angle of eyes (view angle), right = 0
eyes:
x: cos(dir) * 0.125
y: sin(dir) * 0.1
each eye (away from the other):
x: abs(cos(dir)) * 0.01