Heavy parts

A few parts often hold a large share of a model’s triangles. The card Heavy parts lists them, so you can see where the weight is without searching the tree.

What the card lists

Only parts with more than 10,000 triangles are listed. The heaviest is at the top, and the list holds at most 500 parts. Each row shows the part’s place in the list, its name, its triangle count (for example 12.4k) and a bar that compares it with the heaviest part. Hover over a row to see the full name, the exact count and the rank.

The card is in the right sidebar, under Inspect. Beside its title is a small number: how many parts are over the limit. You can read it while the card is folded. It goes down as you delete or reduce parts, and it reads 0, dimmed, when no part is that big.

Steps

1. Open the card Heavy parts in the right sidebar, under Inspect.
2. Click a row to tick it. The part is selected in the viewport. Click the row again to take the tick off. Rows you ticked before stay ticked.
3. To tick a run of rows, click the first one, then hold Shift and click the last.
4. To see where a part is, right-click its row. The view moves to the part. The ticks stay as they are.
5. Press the button under the list. It says what it will remove, for example “Delete 3 parts · 171.3k triangles”. It cannot be pressed until a row is ticked.
6. If you removed too much, press CtrlZ. The whole delete is one undo step.

What to do with a heavy part

• Delete it, if nobody will miss it. Deleting costs no quality.
• Reduce it with Decimate, if it matters and is simply too dense.
• Replace it with a simple stand-in using Smart fit, if only its size and place matter.
• Leave it, if it is the part everybody will look at.

Good to know

• The list follows the scene. After a delete, an undo or a decimate it updates a moment later.
• The limit of 10,000 triangles is fixed. A scene made of many lighter parts can be heavy without one part in the list. To bring a whole scene down to a number, use Fit to budget or Smart optimise.
• For a picture of where the density is, press 4 for the heatmap. See How to read the numbers.