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fix(paste): UTM-precise paste/block base via f64 centroid

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entities_centroid summed the f32 points (double-single HIGH half) alone, so
at UTM scale (~5.7e6) it both quantized each term ~0.5 m and lost low bits
across the running total — drifting the paste base and PASTEBLOCK's block
base metres off, which placed the wrapped block at the wrong spot/scale.

It now reconstructs each vertex's absolute f64 from points + points_low and
accumulates in f64. clipboard_centroid is DVec3; the PASTECLIP commit delta
is fully f64; define_block_from_owned_entities takes an f64 base so the
block-local fold (Translate(-base)) stays precise. The interactive ghost
anchors (PasteCommand, InsertBlockCommand) still take the f32 cast — display
only; the committed geometry is f64.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Hakan Seven 2026-06-24 10:42:58 +03:00
commit 60d4712179
5 changed files with 31 additions and 21 deletions
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4
src/scene/mod.rs
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@ -4204,7 +4204,7 @@ impl Scene {
&mut self,
entities: Vec<EntityType>,
name: &str,
base: glam::Vec3,
base: glam::DVec3,
) -> Result<(), String> {
let name = name.trim();
if name.is_empty() {
@ -4248,7 +4248,7 @@ impl Scene {
.add_entity(EntityType::BlockEnd(block_end))
.map_err(|e| e.to_string())?;
let local = EntityTransform::Translate((-base).as_dvec3());
let local = EntityTransform::Translate(-base);
for mut entity in entities {
view::dispatch::apply_transform(&mut entity, &local);
entity = crate::modules::draw::modify::explode::normalize_entity_for_block(entity);