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Introduce animated crop.

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This commit is contained in:
Thomas Harte
2025-10-08 12:18:04 -04:00
parent e6ccdc5a97
commit d395e2bc75
5 changed files with 41 additions and 9 deletions
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25
Outputs/CRT/CRT.cpp
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@@ -257,19 +257,38 @@ void CRT::advance_cycles(
active_rect_.size.width < 0.95 * scan_target_modals_.output_scale.x &&
active_rect_.size.height < 0.95 * scan_target_modals_.output_scale.y
) {
active_rect_.scale(1.05f, 1.05f);
active_rect_.scale(1.02f, 1.02f);
}
const auto output_frame = rect_accumulator_.posit(active_rect_);
if(output_frame) {
scan_target_modals_.visible_area = *output_frame;
if(output_frame && *output_frame != posted_rect_) {
// Lock in any partial animation that has yet to end.
const auto animation_time = float(animation_step_) / float(AnimationSteps);
previous_posted_rect_ =
previous_posted_rect_ * (1.0f - animation_time) +
posted_rect_ * animation_time;
posted_rect_ = *output_frame;
animation_step_ = 0;
}
if(animation_step_ <= AnimationSteps) {
const auto animation_time = float(animation_step_) / float(AnimationSteps);
scan_target_modals_.visible_area =
previous_posted_rect_ * (1.0f - animation_time) +
posted_rect_ * animation_time;
scan_target_modals_.visible_area.origin.x /= scan_target_modals_.output_scale.x;
scan_target_modals_.visible_area.size.width /= scan_target_modals_.output_scale.x;
scan_target_modals_.visible_area.origin.y /= scan_target_modals_.output_scale.y;
scan_target_modals_.visible_area.size.height /= scan_target_modals_.output_scale.y;
scan_target_->set_modals(scan_target_modals_);
++animation_step_;
}
// TODO: probably something more gradated.
levels_are_interesting_ = level_changes_in_frame_ >= 5;
}
active_rect_ = Display::Rect(65536.0f, 65536.0f, 0.0f, 0.0f);