# dolphinProjection

A dolphin projection record carrying valid, x, y, depth.

Last updated: 2026-09-09

Package: dolphin.projection3d | Status: source-declared

Tags: cpu, dolphin, dolphin.projection3d, projection3d, source-example, thing

Project 3D points into an orthographic 2D view with an inspectable camera.

```yh
external thing dolphinProjection
```

- bool valid: Stores valid as bool.
- float x: Stores x as float.
- float y: Stores y as float.
- float depth: Stores depth as float.
- dolphinProjection(bool valid, float x, float y, float depth): Dolphin projection.

## Use dolphinProjection

A complete small caller. Values are illustrative; check the returned result and package requirements before connecting live resources.

Verification: type checked

```yh
using dolphin.projection3d

// Project 3D points into an orthographic 2D view with an inspectable camera.
dolphinProjection sample = dolphinProjection(true, 1.0, 1.0, 1.0)
Console.Log(Text.From(sample.valid))

```

Save this beside start.yh as project.mech:

```toml
manifestVersion = "2"
package = "api.example.dolphin_projection3d__dolphinprojection"
version = "0.1.0"
languageEdition = "yeho-core-2026.1"

[app]
kind = "headless"

[[dependencies]]
package = "dolphin.math"
version = "0.1.0"
path = "../../../dolphin/packages/math"

[[dependencies]]
package = "dolphin.projection3d"
version = "0.1.0"
path = "../../../dolphin/packages/projection3d"

[[dependencies]]
package = "dolphin.spatial3d"
version = "0.1.0"
path = "../../../dolphin/packages/spatial3d"

```

Extract the example archive beside the yeho and dolphin checkouts. This example requires those source dependencies and a current developer compiler.

```sh
./yeho/build/dolphin-metal/yehoc ./api-examples/dolphin.projection3d--dolphinProjection/usage --backend cpu-oracle -o /tmp/yeho-example
/tmp/yeho-example
```


Package presence and a declaration do not establish support on every host. Host services need their platform and lifecycle setup.

Source: dolphin/packages/projection3d/src/projection.yh

AI training permission: https://demonhunterlabs.com/ai-use