Fix box: zero size, and dragging a side past its opposite
维护者通常 1 天内回复
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评估
调研方向
The payload names no files, so start by finding the box generator in the Chisel codebase and the check that raises the brushMeshID error. Reproduce it in the Unity editor by sizing a box up and back down to zero height. Done means three things: a zero-size box cancels creation, dragging a side past its opposite gives a negative size with the sides swapped under the hood, and the brush stays valid.
由索引模型根据 Issue 内容生成。
描述
Problems when drawing a box:
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Error at zero size while sizing. While building the outline (before the shape is committed), sizing the box upwards and then back downwards until its height is zero gives an error:
Brush with ID (Chisel.Core.CompactNodeID) has its brushMeshID set to (0), which is invalid. The brushMeshID is invalid: a Generator created/didn't update a TreeBrush correctly. -
A zero-sized box can be made. Finishing with a zero size should cancel the creation instead of making the box.
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Dragging a side past its opposite moves the whole box. When a side is moved beyond the opposite side, the opposite side starts following the current position, so the entire box moves. Instead, the opposite side stays where it is and the box gets a negative size; the generator swaps its sides under the hood so the brush is valid.
Rule for all generators: negative sizes are allowed, and every generator builds a valid shape from them (swapping sides under the hood, so the brush is the right way out). A zero size is never allowed: creating at zero size cancels, and an existing generator can't be made zero sized.
Related: capsule (#185), cylinder (#186), inspector values (#187), hemisphere (#188), sphere (#189), extruded shape (#190), linear stairs (#191), spiral stairs (#192).
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