* Morph: shapes move, resize and blend in the slide show
Morph used to fall back to a plain crossfade in the show: morph_pairs and
morph_xfrm existed, but nothing rendered frames with them.
- anim: morph_frame builds a frame from two slides. Paired shapes move along
morph_xfrm (eased); a pure fill colour change blends, other content changes
cross-fade on the same moving box. Unpaired shapes fade out/in, shapes with
entrance animations or hidden media stay out of the frame.
- render: render_blend draws such a frame in one pass: both backdrops
(background, master and layout graphics) cross-fade, every shape resolves
against the slide it comes from, so placeholders keep their own layout.
Renderer::slide is split into canvas/fields/backdrop to share the code.
- ui-egui: the show renders morph frames with these, crossfade otherwise.
generated with Claude Code
* Contributors: add my own entry (alexanderalber)
generated with Claude Code
* Morph: Words and Characters options morph text token by token
The transition option (objects/words/characters) was stored and round-tripped
but ignored by the show. With Words or Characters, paired shapes whose text
differs now morph their text instead of cross-fading it:
- text: GlyphRun records per glyph the paragraph character it draws, so
glyphs can be grouped into words or characters.
- anim: morph_frame reads the option and lists such pairs in MorphFrame::text.
- render: morph_text draws them. Shared words (or characters) travel from their
place in the old text to their place in the new one and grow or shrink to the
new size; a different look cross-fades on the way. The remaining tokens fade
while following a scale and shift fitted to the shared ones, so a line moves
and rearranges as one. Rotated text falls back to a cross-fade.
draw_layout_with's glyph drawing moved into draw_glyph for reuse.
- ui-egui: the show passes the pairs to render_blend.
generated with Claude Code
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Co-authored-by: Brandon Thomas <echelon@gmail.com>
