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Rewind through the descent history (#114)

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You can now rewind through the descent history of the last realization using the *Step* control that's been added to the diagnostics panel.

The starting value of the *Step* control depends on the realization status. After a successful realization, we show the realized state (the last step). After an unsuccessful realization, we show the initial guess (step zero).

Co-authored-by: Aaron Fenyes <aaron.fenyes@fareycircles.ooo>
Reviewed-on: StudioInfinity/dyna3#114
Co-authored-by: Vectornaut <vectornaut@nobody@nowhere.net>
Co-committed-by: Vectornaut <vectornaut@nobody@nowhere.net>
This commit is contained in:
Vectornaut 2025-09-18 23:31:17 +00:00 • committed by Glen Whitney
parent af18a8e7d1
commit 978f70aac7
6 changed files with 152 additions and 19 deletions
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20
app-proto/src/components/display.rs
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@ -588,7 +588,25 @@ pub fn Display() -> View {
location_z *= (time_step * ZOOM_SPEED * zoom).exp();
// manipulate the assembly
if state.selection.with(|sel| sel.len() == 1) {
/* KLUDGE */
// to avoid the complexity of making tangent space projection
// conditional and dealing with unnormalized representation vectors,
// we only allow manipulation when we're looking at the last step of
// a successful realization
let realization_successful = state.assembly.realization_status.with(
|status| status.is_ok()
);
let step_val = state.assembly.step.with_untracked(|step| step.value);
let on_init_step = step_val.is_some_and(|n| n == 0.0);
let on_last_step = step_val.is_some_and(
|n| state.assembly.descent_history.with_untracked(
|history| n as usize + 1 == history.config.len().max(1)
)
);
let on_manipulable_step =
!realization_successful && on_init_step
|| realization_successful && on_last_step;
if on_manipulable_step && state.selection.with(|sel| sel.len() == 1) {
let sel = state.selection.with(
|sel| sel.into_iter().next().unwrap().clone()
);