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feat(mview): add viewport creation options

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Support polygonal and object viewports through native clip-boundary handles, including clipped rendering and selection.

Closes #525
This commit is contained in:
Hakan Seven 2026-07-27 19:28:36 +03:00
commit b8889ccd20
10 changed files with 1039 additions and 136 deletions
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50
src/scene/convert/tessellate.rs
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@ -1386,8 +1386,36 @@ pub fn tessellate(
}
// ── Fallback for Viewport / Insert / Hatch / Ole2Frame ────────────────
let (points_f64, snap_pts, tangent_geoms, key_vertices) =
let (mut points_f64, snap_pts, tangent_geoms, mut key_vertices) =
fallback_geometry(entity);
let clipped_viewport_polygon = match entity {
EntityType::Viewport(viewport) if !viewport.clip_boundary_handle.is_null() => {
let polygon = crate::scene::project::clip_boundary_polygon_for_document(
document,
viewport.clip_boundary_handle,
viewport.center.z as f32,
);
if polygon.len() >= 3 {
let polygon: Vec<[f64; 3]> = polygon
.into_iter()
.map(|point| {
[
point[0] as f64,
point[1] as f64,
point[2] as f64,
]
})
.collect();
points_f64 = polygon.clone();
points_f64.push(polygon[0]);
key_vertices = polygon.clone();
Some(polygon)
} else {
None
}
}
_ => None,
};
// `points_f64` are absolute world coords; split into the double-single
// high/low pair so the outline reconstructs to f64 precision at UTM scale
// (a NaN separator stays NaN in both buffers).
@ -1427,14 +1455,18 @@ pub fn tessellate(
};
let (pick_tris, pick_tris_low) = match entity {
EntityType::Viewport(vp) if !is_sheet_vp(vp) => {
let (cx, cy, cz) = (vp.center.x, vp.center.y, vp.center.z);
let (hw, hh) = (vp.width / 2.0, vp.height / 2.0);
points_to_ds(crate::entities::common::quad_pick_tris(&[
[cx - hw, cy - hh, cz],
[cx + hw, cy - hh, cz],
[cx + hw, cy + hh, cz],
[cx - hw, cy + hh, cz],
]))
if let Some(polygon) = clipped_viewport_polygon.as_ref() {
points_to_ds(crate::entities::mesh::triangulate_planar(polygon))
} else {
let (cx, cy, cz) = (vp.center.x, vp.center.y, vp.center.z);
let (hw, hh) = (vp.width / 2.0, vp.height / 2.0);
points_to_ds(crate::entities::common::quad_pick_tris(&[
[cx - hw, cy - hh, cz],
[cx + hw, cy - hh, cz],
[cx + hw, cy + hh, cz],
[cx - hw, cy + hh, cz],
]))
}
}
_ => (Vec::new(), Vec::new()),
};