Class GcodePreviewElement

2D only: preceding "ghost" layers (DD-031 E1). Construction-time; reflected accessor over the attribute.

DD-032: perspective lens in degrees, [10, 120] (default 50; STUDIO_CAMERA_FOV = 32). Reflects the camera-fov attribute; null removes it and keeps the current lens. Setting the property out of range throws RangeError (never clamped) and leaves the attribute unchanged. A markup/setAttribute value that is not a number in range is ignored: the element keeps the last valid lens. Reads return the effective lens: a valid attribute, else the last valid lens, else null (none set yet).

#268/#275/M6: restore a saved pose (property-only — objects can't be attributes). Pair with the camerachange event for two-way.

#306/#6: frame the printed 'object' (excl. skirt/prime) or 'all' extrusion.

DD-031 G3: feature roles to hide, as a comma-separated numeric list (hidden-feature-roles="6,7" for Skirt+Brim). Declarative form of controls.setFeatureRoleVisible; gate on capabilities.featureRoles. Import FeatureRole from @chestnutlabs/toolpath-core for the values.

#306/2 (DD-020): 'auto' reduces detail while the camera moves.

Resting pixel ratio of the canvas: a number in (0, 4], or 'device' (the display's devicePixelRatio capped at 2, followed live; the exact lowercase string). Reflects the pixel-ratio attribute; null removes it and keeps the current ratio. Setting the property to anything else throws RangeError (never clamped) and leaves the attribute unchanged. A markup/setAttribute value that is not valid is ignored: the element keeps the last valid ratio. Reads return the effective ratio: a valid attribute, else the last valid ratio, else null (none set: the renderer's own, 1). A ratio of 2 shades 4x the fragments of 1. The default capture() size does not change. 3D only.

DD-014 D5 renderer selection (DD-031 E1): reflected property accessor over the renderer attribute. Construction-time like every adapter — read once at connect; changing it after the element is connected has no effect (mode switching post-mount is out of scope), it just keeps the attribute and property in sync so the value is readable/consistent.

Time-based scrub cut in ms of print time (#181).

Default false; only show-retractions="true" shows markers.

Default true; only show-travel="false" hides travel.

#306/#6: build-volume cage, independent of the plate. Default true; show-volume-cage="false" hides it.

DD-016 (#182): default true; only show-wipe="false" hides slicer wipe moves.

#268/#275/M6: preset orientation attribute (top/front/iso/…).

Capture the current view as an image Blob (DD-030 D1). Delegates to controls.capture.