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Votes

0

Found in

2020.3.45f1

2021.3.20f1

2022.2.9f1

2023.1.0b6

2023.2.0a4

Issue ID

UUM-29135

Regression

No

Raycast prints false values when hitting a GameObject located at 0 on the Y-axis

-

Reproduction steps:
1. Open the attached “Predictkey.zip“ project
2. Open “Main Scene” scene
3. Enter Play mode and double-click in Game view
4. Observe “GetY” value in Console window

Expected result: “GetY” value (i.e. 0) is the same as Y-axis value of Plane GameObject Position (i.e. 0)
Actual result: “GetY” value (i.e. 0) is not the same as Y-axis value of Plane GameObject Position (i.e. -5.677426E-18)

Reproducible with: 2020.3.45f1, 2021.3.20f1, 2022.2.9f1, 2023.1.0b6, 2023.2.0a4

Reproduced on: macOS Monterey 12.6 (Intel), Windows 11 (by the reporter)

Note: Couldn’t test builds due to compilation errors in the user’s scripts required for reproduction

  1. Resolution Note:

    When working with floating point numbers a little bit of inaccuracy is expected. Getting ±5.677426E-18 instead of an absolute 0 from a complex calculation is well within the tolerated error (which is roughly ±1e-5).

Comments (1)

  1. DMark05

    Mar 07, 2023 09:57

    I agree that something like that would be tolerable, but the value I get is not within that range, but actually something like 9 or -5.

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