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wip(0.S2): migrate - a var nothing writes becomes a let; a state is keyed by its module, directory or program, so every program's plan agrees; paths normalized; program states named SceneDemoState / scene_demo_st; the LSP reads state, mut and entry/handler parameters

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-25 15:31:34 +03:00
parent 3eda72e8c2
commit 5ffe50ed02
463 changed files with 72045 additions and 67421 deletions
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31
packages/ludic.anim/mix.ludic
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@ -1,13 +1,16 @@
# mix.ludic - sample one clip at a time into per-node buffers, mixed in at a weight. `rot` is 4 per
# node, `pos` 3 per node, and `hit` says which nodes have received a value (bit 0 a rotation, bit 1
# a translation), so a node the clips never mention stays at rest
var q_a: floats = null
var q_b: floats = null
var q_cur: floats = null
export function anim_mix(anim_st: mut AnimState, c: Clip, sk: Skin, t: float, w: float, rot: floats, pos: floats, hit: words) -> void {
export function anim_mix(c: Clip, sk: Skin, t: float, w: float, rot: floats, pos: floats, hit: words) -> void {
if c == null or sk == null { return }
if anim_st.q_a == null {
anim_st.q_a = floats(4)
anim_st.q_b = floats(4)
anim_st.q_cur = floats(4)
if q_a == null {
q_a = floats(4)
q_b = floats(4)
q_cur = floats(4)
}
var tt = t
if c.dur > 0.0 { tt = t % c.dur }
@ -24,27 +27,27 @@ export function anim_mix(anim_st: mut AnimState, c: Clip, sk: Skin, t: float, w:
let span = c.times[o + i1] - c.times[o + i0]
if span > 0.000001 { f = Math.clamp((tt - c.times[o + i0]) / span, 0.0, 1.0) }
}
if c.cpath[ch] == AC_ROT { mix_rot(anim_st, c, ch, node, i0, i1, f, w, rot, hit) } else { mix_pos(c, ch, node, i0, i1, f, w, pos, hit) }
if c.cpath[ch] == AC_ROT { mix_rot(c, ch, node, i0, i1, f, w, rot, hit) } else { mix_pos(c, ch, node, i0, i1, f, w, pos, hit) }
}
}
# Across clips the first contributor lands and the rest are nlerped onto it by their share, which
# is what makes a cross-fade rather than a jump. Test the ROTATION bit, not the whole word: glTF
# writes a node's translation before its rotation, and `hit == 0` then skipped every rotation.
function mix_rot(anim_st: mut AnimState, c: Clip, ch: int, node: int, i0: int, i1: int, f: float, w: float, rot: floats, hit: words) -> void {
function mix_rot(c: Clip, ch: int, node: int, i0: int, i1: int, f: float, w: float, rot: floats, hit: words) -> void {
let vo = c.cvoff[ch]
for e in 0 .. 4 {
anim_st.q_a[e] = c.vals[vo + i0 * 4 + e]
anim_st.q_b[e] = c.vals[vo + i1 * 4 + e]
q_a[e] = c.vals[vo + i0 * 4 + e]
q_b[e] = c.vals[vo + i1 * 4 + e]
}
q_nlerp(anim_st.q_a, anim_st.q_a, anim_st.q_b, f)
q_nlerp(q_a, q_a, q_b, f)
if (hit[node] & 1) == 0 {
q_store(rot, node, anim_st.q_a)
q_store(rot, node, q_a)
hit[node] = hit[node] | 1
} else {
q_load(anim_st.q_cur, rot, node)
q_nlerp(anim_st.q_cur, anim_st.q_cur, anim_st.q_a, w)
q_store(rot, node, anim_st.q_cur)
q_load(q_cur, rot, node)
q_nlerp(q_cur, q_cur, q_a, w)
q_store(rot, node, q_cur)
}
}