Presentate is a package for creating presentation in Typst. It provides a framework for creating dynamic animation that is compatible with other packages. For usage, please refer to demo.pdf

Simple Usage

Import the package with

#import "@preview/presentate:0.2.1": *

and then, the functions are automatically available.

Creating slides

You can create a slide using slide function. For simple animation, you can use pause function to show show some content later. The easiest is to type #show: pause. For example,

#set page(paper: "presentation-16-9")
#set text(size: 25pt)

#slide[
  Hello World!
  #show: pause;

  This is `presentate`.
]

which results in

You can style the slides as you would do with normal Typst document. For example,

#set page(paper: "presentation-16-9")
#set text(size: 25pt, font: "FiraCode Nerd Font Mono")
#set align(horizon)

#slide[
  = Welcome to Presentate! 
  \ A lazy author \
  #datetime.today().display()
]

#set align(top)

#slide[
  == Tips for Typst.

  #set align(horizon)
  Do you know that $pi != 3.141592$?

  #show: pause 
  Yeah. Certainly.

  #show: pause 
  Also $pi != 22/7$.
]

Relative Index Specification

You can use none and auto to specify the index as with previous animation or after previous animation.

#slide[
  = Relative `auto` and `none` Indices

  This is present first 

  #show: pause 

  #only(auto)[This came later, but *not* preserve space.]
 _This will shift._

 #uncover(none)[This comes with current `pause`.]

 #show: pause 
 This is the next `pause`.
]

Varying Timeline

You can specify the update-pause argument of dynamic functions to tell if that function will update the current number of pause or not. If set to true, the number of pauses will set to that value.

This is useful for modifying steps of the animation so that some contents appear with or after another. One application is for showing contents in sync:

#slide[
  = Content in Sync
  #table(columns: (1fr, 1fr), stroke: 1pt)[
    First

    #show: pause;
    I am

    #show: pause;

    in sync.
  ][
    // `[]` is a dummy content.
    #uncover(1, [], update-pause: true)
    Second

    #show: pause;
    I am

    #show: pause;

    in sync.
    
    #show: pause 
    Heheh
  ]
]

Package Integration

Use can use the render function to create a workspace, and import the animation module of Presentate to create animation with other packages. For example, Integration with CeTZ and Fletcher

#import "@preview/cetz:0.4.2": canvas, draw
#import "@preview/fletcher:0.5.8": diagram, edge, node

#slide[
  = CeTZ integration
  #render(s => ({
      import animation: *
      let (pause,) = settings(hider: draw.hide.with(bounds: true))
      canvas({
        import draw: *
        pause(s, circle((0, 0), fill: green))
        s.push(auto) // update s
        pause(s, circle((1, 0), fill: red))
      })
    },s)
  )
]

#slide[
  = Fletcher integration
  #render(s => ({
    import animation: *
    diagram($
        pause(#s, A edge(->)) #s.push(auto)
          & pause(#s, B edge(->)) #s.push(auto)
            pause(#s, edge(->, "d") & C) \
          & pause(#s, D)
    $,)
  }, s,))
]

Results:

You can incrementally show the content from other package by wrap the functions in the animate function, with a modifiers that modifies the function’s arguments to hide the content using modifier. For example, this molecule animation is created compatible with Alchemist package:

#import "@preview/alchemist:0.1.8" as alc

#let modifier(func, ..args) = func(stroke: none, ..args) // hide the bonds with `stroke: none`
#let (single,) = animation.animate(modifier: modifier, alc.single)
#let (fragment,) = animation.animate(modifier: (func, ..args) => func(colors: (white,),..args), alc.fragment) // set atom colors to white

#slide[
  = Alchemist Molecules
  #render(s => ({
      alc.skeletize({
        fragment(s, "H_3C")
        s.push(auto)
        single(s, angle: 1)
        fragment(s, "CH_2")
        s.push(auto)
        single(s, angle: -1, from: 0)
        fragment(s, "CH_2")
        s.push(auto)
        single(s, from: 0, angle: 1)
        fragment(s, "CH_3")
      })
    },s)
  )
]

which results in

Versions

0.2.1

• Added step-item function for revealing items step-by-step.
• Update the packages examples.

0.2.0

• Change the framework of animations, using one state for all cover functions.
• Introduce render and animation for more flexible package integration.

0.1.0

Initial Release

Acknowledgement

Thanks Minideck package author for the minideck package that inspires me the syntax and examples. Touying package authors and Polylux author for inspring me the syntax and parsing method.