52 Find a task or a name

9.3

Racket

52 Find a task or a name🔗ℹ

Use the Guide to learn a workflow. Use this map when you already know the task and need the relevant API. The links below lead to definitions, not to new copies of their contracts.

52.1 Ordinary Scenes🔗ℹ

Task		Start with
Build the timeline		make-scene
Put an object on screen immediately		scene-add
Hold the current state		scene-wait
Append one or more changes		scene-play
Ask for a state at a time		scene-sample
Move a named object		move-to
Share placement among children		group
Give a request a local start		timed
Introduce a faded object		fade-in
Keep an object but make it invisible		fade-to
Fade an object away and remove it		fade-out

For the pictures and timing comparison, see Build a small scene and Control time and visibility. Use Visuals for Visual protocols and kinds; custom protocol implementation is not needed to use a built-in circle or group.

52.2 Graphs and mathematical content🔗ℹ

function-graph turns a numerical function into a sampled path. parametric-curve samples two coordinates from a parameter. data-plot uses observations in their declared order. create reveals stored path geometry. These are distinct tasks. See Draw a graph for the simple case.

An ordinary formula Visual displays typeset mathematics. A mathematical presentation plan carries an authored explanation with its own steps. The slide math adapter wraps that plan; it does not infer algebra from a picture. See A mathematical explanation has its own plan before choosing a formula-transition API.

52.3 Slides and continuity🔗ℹ

Task		Start with
Make a still slide		slide
Keep the slide visible for an interval		hold-slide
Add builds inside the slide		build-slide
Arrange clips and bridges		storyboard
Put native animation in a figure		scene-content
Advance that figure's local clock		play-content
Freeze one domain checkpoint		content-state
Name children for recursive matching		semantic-group
Inspect the prepared match		storyboard-match-report
Get a still picture		slide->pict
Get a native Scene		slide->scene

Full slide contracts are at Slides. Gallery/probe flags are at Slide command-line tools. For 3D content, use the separate task map at 3D reference map. For a wrong result, use Find the cause of a wrong result.

I	Concepts
II	Cookbook
III	Guide
IV	Complete Example Programs
V	Reference

52	Find a task or a name
53	Modules to require
54	Scenes and sampling
55	Scene states
56	Animation requests
57	Native model details
58	Visuals
59	Geometry
60	Number Lines and Coordinate Decorations
61	Point Markers, Scatter Plots, and Filled Areas
62	Probability and Statistical Diagrams
63	Calculus lessons
64	Colors
65	Slides
66	Slide command-line tools
67	Source Programs and Authored Timelines
68	Interactive Preview and Inspection
69	Preview controls and diagnostics
70	Projects and Final Rendering
71	Project execution and cache details
72	Pict Renderer Protocol
73	3D reference map
74	3D: Objects, groups, and paths
75	3D: Cameras and projection
76	3D: Views inside a Scene
77	3D: Animating 3D objects
78	3D: Animating the 3D camera
79	3D: Cuts, caps, and section measurements
80	3D: Supplementary surface, section, and annotation bindings
81	3D: Cuts, sections, and numerical volume
82	3D: Vectors
83	3D: Linear maps and rotations
84	3D: Affine transforms
85	3D: Bounds, rays, and planes
86	3D: Spatial maps and homotopies
87	3D: Materials and lights
88	3D: Lighting inspection
89	3D: Shadow descriptors and stable bounds
90	3D: Finite-light animation
91	3D: Software finite-light evaluation
92	3D: Colour space and final output
93	3D: Relations and geometric annotations
94	3D: Projected labels
95	3D: Textured billboards
96	3D: Spatial curves and vector diagrams
97	3D: Spatial anchors and label layout
98	3D: Anchors and projected labels
99	3D: Parametric surfaces and calculus
100	3D: Adaptive, trimmed, and implicit surfaces
101	3D: Constructive solids
102	3D: Surface constructors and queries
103	3D: Meshes
104	3D: Triangle topology
105	3D: Polygonal faces
106	3D: Deterministic convex hulls
107	3D: Polyhedral duals
108	3D: Schlegel diagrams and polyhedral nets
109	3D: Conservative mesh correspondence
110	3D: Topology-safe mesh matching
111	3D: Checking and repairing mesh orientation
112	3D: Clipping, sections, and transparency
113	3D: Prepared spatial ODE trajectories and vector fields
114	3D: Seeds and streamline sets
115	3D: Poincare sections and return maps
116	3D: Equilibria and local linearization
117	3D: Flow maps and volume change
118	3D: Drawing and inspecting trajectories
119	3D: Reading prepared trajectories
120	3D: Drawing vector fields and particles
121	3D: Trajectory display
122	3D: Spatial inspection and exact picking
123	3D: Retained renderer backends
124	3D: Compiled geometry and instances
125	3D: Frame requests and results
126	3D: Software rendering and statistics
127	3D: Optional Racket/ Open GL backend
128	Experimental Derived Visuals
129	Source Package Hygiene

52.1	Ordinary Scenes
52.2	Graphs and mathematical content
52.3	Slides and continuity