\return The z-coordinate of the point.

True when the render pass holds a zero-copy fast cloud (vs the CloudVertex fallback) — lets a test assert an eligible cloud (incl. packed-rgba RGB-dir

Re-skin a QFileDialog toolbar button identified by objectName with one of the app's themed SVG icons. Silent no-op when the button is missing (defensi

The dataset the dock's TF buffer is currently bound to (0 = unbound), and whether a TF buffer is bound at all. Lets tests assert the M.17 rebind/reset

! \brief Map a value of a given interval into a color index \param numColors Number of colors \param interval Range for all values \param

Create one transform through the bridge's C ABI view.

The full human-readable path used to label a curve: "topic/field" (dots normalized to '/', leading slashes stripped), falling back to the opaque catal

True while an async compressed decode is in flight (or its finished event is still queued) — lets tests pump the loop until the result landed.

! \return Pixel ratio for a paint device \param paintDevice Paint device */

Wrapper for QPainter::drawPolyline()

Indices must all be in range and form whole triangles.

True when reading `field` stays inside one point: offset + width*count <= point_step. Computed in uint64 so the offset+size sum cannot overflow uint32

\return Footer label widget.

True when the view holds a usable (valid) GL context.

--------------------------------------------------------------------------- Byte-width helpers -------------------------------------------------------

! \return True, when the bounding rectangle is empty \sa boundingRect(), isNull() */

Convenience accessors. Prefer these over std::get_if at call sites.

Join a root directory and a relative path with a single separator.

Register a scalar topic and commit `rows` samples (ts == val == i). Returns id.

Return label's text margin in pixels

Offset of the byte after the next Annex-B start code at/after `offset`, or `size` if none. Start codes are 0x000001 (3-byte) or 0x00000001 (4-byte).

Index into `points` of the frame whose projected pixel is closest to the cursor AND within `radius_px`, or nullopt when none qualifies. On an exact di

Project a frame origin (expressed in the fixed/world frame) to logical screen pixels (top-left origin, +y DOWN — Qt widget convention, so it compares

NDC.xy of a world point under the given view/proj (perspective divide).

Reads a (topic, field) attribute pair off a curve element into a SeriesPath. Returns nullopt when the topic attribute is absent (e.g. a curve that car

Best human-readable label for a source curve: prefer the field display fields, falling back to the opaque catalog key only when those are empty. A ma

Force the button to be laid out so width()/sizeHint() reflect the final, wrapped geometry. show() triggers Polish (label wrapping) then the showEvent(

Runs the (GL-free) draw-cache rebuild — which injects the fixed-joint TF bridges into frame_ctx.tf — so a test can assert the buffer the layer renders

\return Render hints

Rasterise a monochrome SVG at the requested logical size, honouring the caller's devicePixelRatio so QLabel::setPixmap stays crisp on HiDPI screens. U