Trapezoid Param ignored when depth is >= 7.0

[tbjoern]

Describe the bug
Disabling the Trapezoid param does not work when the probe depth is >= 7.0

The specification of the Trapezoid param does not mention which depths are supported, but I'd expect it to take effect for all possible depths.

I first noticed this bug on Solum 12.0.0. The previous versions did always produce rectangular images, regardless of depth.

To Reproduce

1. Connect to a probe via solum
2. Call setParam(Param.ImageDepth, 6.0), then setParam(Param.Trapezoid, 0.0) - the image shape is rectangular (as expected)
3. Call setParam(Param.ImageDepth, 7.0), then setParam(Param.Trapezoid, 0.0) - the image shape is trapezoid (even though the setting is disabled)
4. Call getParam(Param.Trapezoid) { Log.d("Solum", "$it") }, The log prints 0.0, the setting is disabled, but the image shape is still trapezoid.

Environment:

• SDK variant: Android SDK
• Development platform: Linux, Android Studio 2024.2.2
• SDK version: solum-12.0.0-android.arm64-v8a.aar, firmware version 12.0.0-639+db3f907814_12.0.0-639+db3f907814
• Clarius App version: N/A

[clariusk]

yes, this makes sense, we force trapezoidal imaging below certain depths for certain probe for certain workflows/applications, so toggling it in these scenarios will have no affect

[tbjoern]

I see. Is that a technical requirement? We need the images to be always rectangular for our application. We are using L7HD3 scanners with the vascular preset.

[clariusk]

Yes, our clinical staff has requested that the field of view beyond 7cm is not clinically usable unless trapezoidal is enabled.