ausboss
ac0bb08949
32 of the ? help pages checked against the code and corrected. Wrong claims fixed: Stitch Inpaint's empty-area check (20/255), what a new video keeps on both Video Crop + Rotate + Pad pages, Load Video's frame picker and player height, where Run Timer lists earlier runs, inpainting on the Krea 2 Outpaint Model Patch page, Workflow Note's banner layout and pack detection, Image Resize's pad bars and mask, Save Image's path preview and tags, Free Memory's steps, and Latent Size's sockets. Image Crop + Rotate + Pad now follows the node from top to bottom; the saved values no row shows moved under Technical details. Controls are named the way the node shows them, with the input name beside. Pages that opened with jargon now open with what the node does and when to use it. LoRA Loader gained the Civitai lookup, suggested strength and the gear options it did not name.
1.8 KiB
Math Expression
Does maths on up to three numbers. Type a formula that uses a, b and c
and get the answer as a decimal number and as a whole number. Use it for
width and height sums, strength ramps and frame counts.
Controls
- f(a, b, c) (
expression): The arithmetic to evaluate. Allowed: numbers, the namesa/b/c, the operators+ - * / // % **, parentheses, unary minus, and the functionsmin,max,abs,round,floor,ceil,sqrt. Examples:a * 2,floor(a / 64) * 64,min(a, b) + 0.5,sqrt(a*a + b*b). A new node starts witha + b.minandmaxtake two or more values, andround(a, 2)keeps two decimals. - a, b, c: The values the expression reads, as three sockets on
the node's left edge that take a
FLOATor anINT. An unwired one reads as0, and an unused one costs nothing; a constant belongs in the expression itself (a * 2,floor(a / 64) * 64).
Outputs
- float: The result as a float.
- int: The result rounded to the nearest whole number; halves round away
from zero (
2.5becomes3,-2.5becomes-3).round()inside the expression is different: it sends a half to the nearest even number, soround(2.5)is2.
Safety
The expression is parsed with Python's ast module and walked against a
whitelist — it is never passed to eval. Anything outside the grammar above
(other names, attribute access, subscripts, strings, comparisons) stops the
run with an error naming what to remove, so a workflow shared by someone else
cannot smuggle code through this node. Division by zero and overflowing
results are clear errors rather than a crash or an inf traveling
downstream. So are the square root of a negative number and an empty
expression. An expression can be up to 4096 characters long.