Struct BoxWidget 

pub struct BoxWidget {
    pub center: Vec3,
    pub half_extents: Vec3,
    pub color: [f32; 4],
    /* private fields */
}

An interactive axis-aligned box widget with a center handle and six face handles.

Use wireframe_item() for the box outline (push into fd.scene.polylines) and handle_glyphs() for the 7 draggable sphere handles (push into fd.scene.glyphs).

Usage

let mut bw = BoxWidget::new(glam::Vec3::ZERO, glam::Vec3::splat(2.0));

// Each frame:
bw.update(&ctx);
fd.scene.polylines.push(bw.wireframe_item(BOX_ID));
fd.scene.glyphs.push(bw.handle_glyphs(HANDLE_ID, &ctx));

Fields

center: Vec3

World-space center of the box.

half_extents: Vec3

Half-extents along each world axis.

color: [f32; 4]

RGBA color for the wireframe outline.

Implementations

impl BoxWidget

pub fn new(center: Vec3, half_extents: Vec3) -> Self

Create a new box widget.

pub fn is_active(&self) -> bool

True while a drag session is in progress.

pub fn aabb(&self) -> Aabb

The current AABB of the box (center +/- half_extents).

pub fn update(&mut self, ctx: &WidgetContext) -> WidgetResult

Process input for this frame. Returns Updated if state changed.

pub fn wireframe_item(&self, id: u64) -> PolylineItem

Build a PolylineItem for the box wireframe outline.

id is the pick ID (0 = not pickable).

pub fn handle_glyphs(&self, id_base: u64, ctx: &WidgetContext) -> GlyphItem

Build a GlyphItem with 7 sphere handles: center + 6 face centers.

id_base is the pick ID for the center handle; face handles use id_base + 1 through id_base + 6.